learing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  281.306004][ T9394] BTRFS info (device loop5): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  281.528862][ T9394] BTRFS info (device loop5): checking UUID tree
[  281.529324][ T9394] BTRFS error (device loop5): failed to check the UUID tree: -4
[  281.554090][   T13] btrfs_validate_extent_buffer: 8 callbacks suppressed
[  281.554108][   T13] BTRFS warning (device loop2): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  281.555505][ T9404] BTRFS error (device loop2): failed to load root extent
[  281.555542][ T9404] BTRFS warning (device loop2): try to load backup roots slot 1
[  281.555839][   T67] BTRFS warning (device loop2): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  281.563839][ T9404] BTRFS warning (device loop2): couldn't read tree root
[  281.563858][ T9404] BTRFS warning (device loop2): try to load backup roots slot 2
[  281.572760][   T13] BTRFS error (device loop2): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  281.573608][ T9404] BTRFS warning (device loop2): couldn't read tree root
[  281.573627][ T9404] BTRFS warning (device loop2): try to load backup roots slot 3
[  281.579869][ T9391] BTRFS error (device loop1): open_ctree failed: -4
[  281.588121][ T9395] BTRFS error (device loop3): open_ctree failed: -4
[  281.630845][ T9399] BTRFS info (device loop4): disabling free space tree
[  281.630918][ T9399] BTRFS info (device loop4): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  281.630940][ T9399] BTRFS info (device loop4): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
2026/05/26 04:53:14 executed programs: 202
[  281.820404][ T9394] BTRFS error (device loop5): open_ctree failed: -4
[  281.823552][ T9399] BTRFS info (device loop4): checking UUID tree
[  281.823639][ T9399] BTRFS error (device loop4): failed to check the UUID tree: -4
[  282.135276][ T9404] BTRFS error (device loop2): open_ctree failed: -4
[  282.141355][ T9399] BTRFS error (device loop4): open_ctree failed: -4
[  283.657351][ T9486] loop5: detected capacity change from 0 to 32768
[  283.658214][ T9484] loop3: detected capacity change from 0 to 32768
[  283.685725][ T9486] btrfs: Deprecated parameter 'usebackuproot'
[  283.685746][ T9486] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  283.692205][ T9486] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop5 (7:5) scanned by syz.5.211 (9486)
[  283.696882][ T9481] loop1: detected capacity change from 0 to 32768
[  283.716656][ T9481] btrfs: Deprecated parameter 'usebackuproot'
[  283.716674][ T9481] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  283.721485][ T9484] btrfs: Deprecated parameter 'usebackuproot'
[  283.721501][ T9484] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  283.783725][ T9481] BTRFS info: device /dev/loop1 (7:1) using temp-fsid eb927c7d-b3ca-4df4-b3c3-0570fcca930d
[  283.783782][ T9481] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop1 (7:1) scanned by syz.1.209 (9481)
[  283.784294][ T9484] BTRFS info: device /dev/loop3 (7:3) using temp-fsid a64883e1-9883-4191-8123-be91d0f8b2df
[  283.821067][ T9486] BTRFS info (device loop5): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  283.821095][ T9486] BTRFS info (device loop5): using crc32c checksum algorithm
[  283.821121][ T9486] BTRFS warning (device loop5): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  283.834611][ T9484] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop3 (7:3) scanned by syz.3.210 (9484)
[  283.862671][ T9481] BTRFS info (device loop1): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  283.862699][ T9481] BTRFS info (device loop1): using crc32c checksum algorithm
[  283.862726][ T9481] BTRFS warning (device loop1): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  283.980859][ T9484] BTRFS info (device loop3): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  283.980880][ T9484] BTRFS info (device loop3): using crc32c checksum algorithm
[  283.980898][ T9484] BTRFS warning (device loop3): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  284.084249][ T9490] loop2: detected capacity change from 0 to 32768
[  284.149058][   T43] BTRFS warning (device loop5): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  284.150354][ T9490] btrfs: Deprecated parameter 'usebackuproot'
[  284.150371][ T9490] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  284.163039][ T9486] BTRFS error (device loop5): failed to load root extent
[  284.163079][ T9486] BTRFS warning (device loop5): try to load backup roots slot 1
[  284.164490][   T43] BTRFS warning (device loop5): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  284.168139][ T9490] BTRFS info: device /dev/loop2 (7:2) using temp-fsid e2658195-6ae4-4b71-ad14-f809321ae8cb
[  284.168200][ T9490] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop2 (7:2) scanned by syz.2.212 (9490)
[  284.172518][ T9486] BTRFS warning (device loop5): couldn't read tree root
[  284.172538][ T9486] BTRFS warning (device loop5): try to load backup roots slot 2
[  284.176748][ T1360] BTRFS error (device loop5): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  284.177675][ T9486] BTRFS warning (device loop5): couldn't read tree root
[  284.177694][ T9486] BTRFS warning (device loop5): try to load backup roots slot 3
[  284.194272][ T1378] BTRFS warning (device loop1): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  284.196326][ T9481] BTRFS error (device loop1): failed to load root extent
[  284.196363][ T9481] BTRFS warning (device loop1): try to load backup roots slot 1
[  284.197854][ T1360] BTRFS warning (device loop1): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  284.198359][ T9481] BTRFS warning (device loop1): couldn't read tree root
[  284.198377][ T9481] BTRFS warning (device loop1): try to load backup roots slot 2
[  284.201113][ T1360] BTRFS error (device loop1): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  284.201648][ T9481] BTRFS warning (device loop1): couldn't read tree root
[  284.201665][ T9481] BTRFS warning (device loop1): try to load backup roots slot 3
[  284.230289][ T9491] loop4: detected capacity change from 0 to 32768
[  284.231441][ T9491] btrfs: Deprecated parameter 'usebackuproot'
[  284.231457][ T9491] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  284.246581][ T9491] BTRFS info: device /dev/loop4 (7:4) using temp-fsid 8784710a-c2e0-4793-b540-68a76230ee57
[  284.246636][ T9491] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop4 (7:4) scanned by syz.4.213 (9491)
[  284.252920][ T9490] BTRFS info (device loop2): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  284.252948][ T9490] BTRFS info (device loop2): using crc32c checksum algorithm
[  284.252974][ T9490] BTRFS warning (device loop2): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  284.300021][ T9486] BTRFS info (device loop5): rebuilding free space tree
[  284.315134][ T9491] BTRFS info (device loop4): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  284.315163][ T9491] BTRFS info (device loop4): using crc32c checksum algorithm
[  284.315189][ T9491] BTRFS warning (device loop4): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  284.419567][ T9486] BTRFS info (device loop5): disabling free space tree
[  284.419640][ T9486] BTRFS info (device loop5): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  284.419661][ T9486] BTRFS info (device loop5): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  284.478027][ T9486] BTRFS info (device loop5): checking UUID tree
[  284.558503][ T9486] BTRFS info (device loop5): enabling ssd optimizations
[  284.558525][ T9486] BTRFS info (device loop5): disabling tree log
[  284.558539][ T9486] BTRFS info (device loop5): turning on flush-on-commit
[  284.558553][ T9486] BTRFS info (device loop5): turning on async discard
[  284.558566][ T9486] BTRFS info (device loop5): enabling disk space caching
[  284.558579][ T9486] BTRFS info (device loop5): force clearing of disk cache
[  284.558593][ T9486] BTRFS info (device loop5): trying to use backup root at mount time
[  284.558608][ T9486] BTRFS info (device loop5): use zstd compression, level 3
[  284.566717][ T9481] BTRFS info (device loop1): rebuilding free space tree
[  284.642576][  T180] BTRFS warning (device loop3): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  284.654529][ T9484] BTRFS error (device loop3): failed to load root extent
[  284.654570][ T9484] BTRFS warning (device loop3): try to load backup roots slot 1
[  284.664523][   T67] BTRFS warning (device loop3): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  284.664842][ T9484] BTRFS warning (device loop3): couldn't read tree root
[  284.664860][ T9484] BTRFS warning (device loop3): try to load backup roots slot 2
[  284.670690][   T43] BTRFS error (device loop3): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  284.670899][ T9484] BTRFS warning (device loop3): couldn't read tree root
[  284.670916][ T9484] BTRFS warning (device loop3): try to load backup roots slot 3
[  284.715785][ T9481] BTRFS info (device loop1): disabling free space tree
[  284.715859][ T9481] BTRFS info (device loop1): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  284.715881][ T9481] BTRFS info (device loop1): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  284.766414][ T9481] BTRFS info (device loop1): checking UUID tree
[  284.770650][ T9481] BTRFS info (device loop1): enabling ssd optimizations
[  284.770668][ T9481] BTRFS info (device loop1): disabling tree log
[  284.770682][ T9481] BTRFS info (device loop1): turning on flush-on-commit
[  284.770694][ T9481] BTRFS info (device loop1): turning on async discard
[  284.770708][ T9481] BTRFS info (device loop1): enabling disk space caching
[  284.770721][ T9481] BTRFS info (device loop1): force clearing of disk cache
[  284.770734][ T9481] BTRFS info (device loop1): trying to use backup root at mount time
[  284.770748][ T9481] BTRFS info (device loop1): use zstd compression, level 3
[  284.858012][ T9484] BTRFS info (device loop3): rebuilding free space tree
[  284.938176][  T107] BTRFS warning (device loop2): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  284.938293][ T9490] BTRFS error (device loop2): failed to load root extent
[  284.938336][ T9490] BTRFS warning (device loop2): try to load backup roots slot 1
[  284.948644][   T43] BTRFS warning (device loop2): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  284.977566][ T9490] BTRFS warning (device loop2): couldn't read tree root
[  284.977588][ T9490] BTRFS warning (device loop2): try to load backup roots slot 2
[  284.983531][ T1360] BTRFS error (device loop2): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  284.983654][ T9490] BTRFS warning (device loop2): couldn't read tree root
[  284.983670][ T9490] BTRFS warning (device loop2): try to load backup roots slot 3
[  285.042895][ T9484] BTRFS info (device loop3): disabling free space tree
[  285.042981][ T9484] BTRFS info (device loop3): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  285.043004][ T9484] BTRFS info (device loop3): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  285.112499][ T9491] BTRFS error (device loop4): failed to load root extent
[  285.112541][ T9491] BTRFS warning (device loop4): try to load backup roots slot 1
[  285.114283][ T9491] BTRFS warning (device loop4): couldn't read tree root
[  285.114311][ T9491] BTRFS warning (device loop4): try to load backup roots slot 2
[  285.116725][ T9484] BTRFS info (device loop3): checking UUID tree
[  285.116789][ T9484] BTRFS error (device loop3): failed to check the UUID tree: -4
[  285.117529][  T107] BTRFS error (device loop4): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  285.119239][ T9491] BTRFS warning (device loop4): couldn't read tree root
[  285.119257][ T9491] BTRFS warning (device loop4): try to load backup roots slot 3
[  285.138802][ T7677] BTRFS info (device loop5): last unmount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  285.273125][ T9490] BTRFS info (device loop2): rebuilding free space tree
[  285.670419][ T9490] BTRFS info (device loop2): disabling free space tree
[  285.670493][ T9490] BTRFS info (device loop2): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  285.670516][ T9490] BTRFS info (device loop2): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  285.677092][ T9484] BTRFS error (device loop3): open_ctree failed: -4
[  285.692172][ T9490] BTRFS info (device loop2): checking UUID tree
[  285.692238][ T9490] BTRFS error (device loop2): failed to check the UUID tree: -4
[  285.787154][ T9491] BTRFS error (device loop4): open_ctree failed: -4
[  285.948321][ T5755] BTRFS info (device loop1): last unmount of filesystem eb927c7d-b3ca-4df4-b3c3-0570fcca930d
[  286.101508][ T9490] BTRFS error (device loop2): open_ctree failed: -4
[  287.722645][ T9576] loop3: detected capacity change from 0 to 32768
[  287.723713][ T9576] btrfs: Deprecated parameter 'usebackuproot'
[  287.723731][ T9576] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  287.738489][ T9576] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop3 (7:3) scanned by syz.3.216 (9576)
[  287.761446][ T9573] loop5: detected capacity change from 0 to 32768
[  287.762440][ T9573] btrfs: Deprecated parameter 'usebackuproot'
[  287.762456][ T9573] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  287.809349][ T9573] BTRFS info: device /dev/loop5 (7:5) using temp-fsid 08d507fe-6d23-4ab9-91b6-c196105e4856
[  287.809409][ T9573] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop5 (7:5) scanned by syz.5.214 (9573)
[  287.828556][ T9576] BTRFS info (device loop3): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  287.828583][ T9576] BTRFS info (device loop3): using crc32c checksum algorithm
[  287.828609][ T9576] BTRFS warning (device loop3): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  287.870838][ T9573] BTRFS info (device loop5): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  287.870867][ T9573] BTRFS info (device loop5): using crc32c checksum algorithm
[  287.870893][ T9573] BTRFS warning (device loop5): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  288.056256][ T1360] btrfs_validate_extent_buffer: 2 callbacks suppressed
[  288.056277][ T1360] BTRFS warning (device loop5): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  288.057069][ T9573] BTRFS error (device loop5): failed to load root extent
[  288.057107][ T9573] BTRFS warning (device loop5): try to load backup roots slot 1
[  288.059301][   T43] BTRFS warning (device loop5): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  288.059434][ T9573] BTRFS warning (device loop5): couldn't read tree root
[  288.059450][ T9573] BTRFS warning (device loop5): try to load backup roots slot 2
[  288.059726][   T43] BTRFS error (device loop5): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  288.059841][ T9573] BTRFS warning (device loop5): couldn't read tree root
[  288.059857][ T9573] BTRFS warning (device loop5): try to load backup roots slot 3
[  288.072573][ T9583] loop1: detected capacity change from 0 to 32768
[  288.081428][ T9583] btrfs: Deprecated parameter 'usebackuproot'
[  288.081445][ T9583] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  288.166066][ T9583] BTRFS info: device /dev/loop1 (7:1) using temp-fsid b4ba7514-315a-423e-b8c4-231478ac4f23
[  288.166126][ T9583] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop1 (7:1) scanned by syz.1.215 (9583)
[  288.201036][ T9579] loop4: detected capacity change from 0 to 32768
[  288.210065][ T9579] btrfs: Deprecated parameter 'usebackuproot'
[  288.210084][ T9579] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  288.225659][ T9579] BTRFS info: device /dev/loop4 (7:4) using temp-fsid 41b33108-68a2-4efb-a863-b95ecff7881a
[  288.225715][ T9579] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop4 (7:4) scanned by syz.4.217 (9579)
[  288.232478][ T1326] BTRFS warning (device loop3): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  288.232622][ T9576] BTRFS error (device loop3): failed to load root extent
[  288.232656][ T9576] BTRFS warning (device loop3): try to load backup roots slot 1
[  288.233920][ T1326] BTRFS warning (device loop3): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  288.234054][ T9576] BTRFS warning (device loop3): couldn't read tree root
[  288.234069][ T9576] BTRFS warning (device loop3): try to load backup roots slot 2
[  288.238202][ T1326] BTRFS error (device loop3): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  288.240007][ T9576] BTRFS warning (device loop3): couldn't read tree root
[  288.240032][ T9576] BTRFS warning (device loop3): try to load backup roots slot 3
[  288.300290][ T9579] BTRFS info (device loop4): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  288.300318][ T9579] BTRFS info (device loop4): using crc32c checksum algorithm
[  288.300345][ T9579] BTRFS warning (device loop4): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  288.308060][ T9583] BTRFS info (device loop1): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  288.308086][ T9583] BTRFS info (device loop1): using crc32c checksum algorithm
[  288.308111][ T9583] BTRFS warning (device loop1): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  288.363250][ T9576] BTRFS info (device loop3): rebuilding free space tree
[  288.447046][ T9573] BTRFS info (device loop5): rebuilding free space tree
[  288.540388][ T9582] loop2: detected capacity change from 0 to 32768
[  288.555122][ T9582] btrfs: Deprecated parameter 'usebackuproot'
[  288.555142][ T9582] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  288.559639][ T9582] BTRFS info: device /dev/loop2 (7:2) using temp-fsid 0598ee72-de3d-4373-b56e-434f9afadc26
[  288.559695][ T9582] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop2 (7:2) scanned by syz.2.218 (9582)
[  288.586913][ T9573] BTRFS info (device loop5): disabling free space tree
[  288.586990][ T9573] BTRFS info (device loop5): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  288.587011][ T9573] BTRFS info (device loop5): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  288.597551][ T9582] BTRFS info (device loop2): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  288.597576][ T9582] BTRFS info (device loop2): using crc32c checksum algorithm
[  288.597601][ T9582] BTRFS warning (device loop2): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  288.608572][ T9573] BTRFS info (device loop5): checking UUID tree
[  288.654609][ T9573] BTRFS info (device loop5): enabling ssd optimizations
[  288.654632][ T9573] BTRFS info (device loop5): disabling tree log
[  288.654645][ T9573] BTRFS info (device loop5): turning on flush-on-commit
[  288.654659][ T9573] BTRFS info (device loop5): turning on async discard
[  288.654672][ T9573] BTRFS info (device loop5): enabling disk space caching
[  288.654685][ T9573] BTRFS info (device loop5): force clearing of disk cache
[  288.654699][ T9573] BTRFS info (device loop5): trying to use backup root at mount time
[  288.654714][ T9573] BTRFS info (device loop5): use zstd compression, level 3
[  288.884779][ T1326] BTRFS warning (device loop4): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  288.884933][ T9579] BTRFS error (device loop4): failed to load root extent
[  288.884968][ T9579] BTRFS warning (device loop4): try to load backup roots slot 1
[  288.885336][ T1326] BTRFS warning (device loop4): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
2026/05/26 04:53:21 executed programs: 212
[  288.891536][ T9579] BTRFS warning (device loop4): couldn't read tree root
[  288.891558][ T9579] BTRFS warning (device loop4): try to load backup roots slot 2
[  288.891848][   T13] BTRFS error (device loop4): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  288.896758][ T9579] BTRFS warning (device loop4): couldn't read tree root
[  288.896778][ T9579] BTRFS warning (device loop4): try to load backup roots slot 3
[  288.984014][ T9576] BTRFS info (device loop3): disabling free space tree
[  288.984086][ T9576] BTRFS info (device loop3): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  288.984107][ T9576] BTRFS info (device loop3): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  289.009613][  T180] BTRFS warning (device loop1): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  289.009763][ T9583] BTRFS error (device loop1): failed to load root extent
[  289.009796][ T9583] BTRFS warning (device loop1): try to load backup roots slot 1
[  289.013101][  T180] BTRFS warning (device loop1): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  289.019225][ T9583] BTRFS warning (device loop1): couldn't read tree root
[  289.019245][ T9583] BTRFS warning (device loop1): try to load backup roots slot 2
[  289.023996][ T1326] BTRFS error (device loop1): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  289.031163][ T9583] BTRFS warning (device loop1): couldn't read tree root
[  289.031251][ T9583] BTRFS warning (device loop1): try to load backup roots slot 3
[  289.055688][ T9576] BTRFS info (device loop3): checking UUID tree
[  289.055750][ T9576] BTRFS error (device loop3): failed to check the UUID tree: -4
[  289.178457][ T1360] BTRFS warning (device loop2): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  289.179995][ T9582] BTRFS error (device loop2): failed to load root extent
[  289.180035][ T9582] BTRFS warning (device loop2): try to load backup roots slot 1
[  289.180332][ T1025] BTRFS warning (device loop2): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  289.184588][ T9582] BTRFS warning (device loop2): couldn't read tree root
[  289.184605][ T9582] BTRFS warning (device loop2): try to load backup roots slot 2
[  289.184933][ T1025] BTRFS error (device loop2): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  289.186915][ T9582] BTRFS warning (device loop2): couldn't read tree root
[  289.186934][ T9582] BTRFS warning (device loop2): try to load backup roots slot 3
[  289.187759][ T7677] BTRFS info (device loop5): last unmount of filesystem 08d507fe-6d23-4ab9-91b6-c196105e4856
[  289.249091][ T9583] BTRFS info (device loop1): rebuilding free space tree
[  289.528136][ T9583] BTRFS info (device loop1): disabling free space tree
[  289.528205][ T9583] BTRFS info (device loop1): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  289.528225][ T9583] BTRFS info (device loop1): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  289.579222][ T9579] BTRFS error (device loop4): open_ctree failed: -4
[  289.618645][ T9583] BTRFS info (device loop1): checking UUID tree
[  289.618716][ T9583] BTRFS error (device loop1): failed to check the UUID tree: -4
[  289.741729][ T9576] BTRFS error (device loop3): open_ctree failed: -4
[  289.808246][ T9582] BTRFS error (device loop2): open_ctree failed: -4
[  289.972844][ T9583] BTRFS error (device loop1): open_ctree failed: -4
[  291.147255][ T9665] loop4: detected capacity change from 0 to 32768
[  291.155791][ T9665] btrfs: Deprecated parameter 'usebackuproot'
[  291.155809][ T9665] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  291.161530][ T9665] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop4 (7:4) scanned by syz.4.220 (9665)
[  291.178501][ T9665] BTRFS info (device loop4): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  291.178527][ T9665] BTRFS info (device loop4): using crc32c checksum algorithm
[  291.178552][ T9665] BTRFS warning (device loop4): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  291.425064][ T9675] loop5: detected capacity change from 0 to 32768
[  291.429847][ T9675] btrfs: Deprecated parameter 'usebackuproot'
[  291.429864][ T9675] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  291.454628][ T9675] BTRFS info: device /dev/loop5 (7:5) using temp-fsid 12c85f64-6fa3-4a3e-9711-27ccb766df2e
[  291.454686][ T9675] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop5 (7:5) scanned by syz.5.219 (9675)
[  291.565783][ T9665] BTRFS error (device loop4): failed to load root extent
[  291.565823][ T9665] BTRFS warning (device loop4): try to load backup roots slot 1
[  291.587614][ T9665] BTRFS warning (device loop4): couldn't read tree root
[  291.587637][ T9665] BTRFS warning (device loop4): try to load backup roots slot 2
[  291.602958][ T9675] BTRFS info (device loop5): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  291.602985][ T9675] BTRFS info (device loop5): using crc32c checksum algorithm
[  291.603011][ T9675] BTRFS warning (device loop5): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  291.617794][   T13] BTRFS error (device loop4): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  291.620859][ T9665] BTRFS warning (device loop4): couldn't read tree root
[  291.620883][ T9665] BTRFS warning (device loop4): try to load backup roots slot 3
[  291.721646][ T9665] BTRFS info (device loop4): rebuilding free space tree
[  291.778060][ T9667] loop3: detected capacity change from 0 to 32768
[  291.779108][ T9667] btrfs: Deprecated parameter 'usebackuproot'
[  291.779125][ T9667] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  291.780790][ T9667] BTRFS info: device /dev/loop3 (7:3) using temp-fsid ed52a6e1-5ef7-40e8-9654-01722b560439
[  291.780847][ T9667] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop3 (7:3) scanned by syz.3.221 (9667)
[  291.837508][ T9667] BTRFS info (device loop3): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  291.837537][ T9667] BTRFS info (device loop3): using crc32c checksum algorithm
[  291.837563][ T9667] BTRFS warning (device loop3): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  291.892596][ T9675] BTRFS error (device loop5): failed to load root extent
[  291.897409][ T9665] BTRFS info (device loop4): disabling free space tree
[  291.897477][ T9665] BTRFS info (device loop4): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  291.897499][ T9665] BTRFS info (device loop4): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  291.926353][ T9665] BTRFS info (device loop4): checking UUID tree
[  291.929990][ T9665] BTRFS info (device loop4): enabling ssd optimizations
[  291.930009][ T9665] BTRFS info (device loop4): disabling tree log
[  291.930022][ T9665] BTRFS info (device loop4): turning on flush-on-commit
[  291.930036][ T9665] BTRFS info (device loop4): turning on async discard
[  291.930150][ T9665] BTRFS info (device loop4): enabling disk space caching
[  291.930164][ T9665] BTRFS info (device loop4): force clearing of disk cache
[  291.930178][ T9665] BTRFS info (device loop4): trying to use backup root at mount time
[  291.930193][ T9665] BTRFS info (device loop4): use zstd compression, level 3
[  291.930766][ T9675] BTRFS warning (device loop5): try to load backup roots slot 1
[  291.931148][ T9675] BTRFS warning (device loop5): couldn't read tree root
[  291.931164][ T9675] BTRFS warning (device loop5): try to load backup roots slot 2
[  291.931408][  T180] BTRFS error (device loop5): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  291.931532][ T9675] BTRFS warning (device loop5): couldn't read tree root
[  291.931547][ T9675] BTRFS warning (device loop5): try to load backup roots slot 3
[  292.039787][ T9675] BTRFS info (device loop5): rebuilding free space tree
[  292.090824][ T9672] loop1: detected capacity change from 0 to 32768
[  292.093382][ T9672] btrfs: Deprecated parameter 'usebackuproot'
[  292.093399][ T9672] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  292.163031][ T9672] BTRFS info: device /dev/loop1 (7:1) using temp-fsid 77d108ec-d1c5-4d6b-a427-fce6de847f2d
[  292.163091][ T9672] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop1 (7:1) scanned by syz.1.223 (9672)
[  292.199537][ T9672] BTRFS info (device loop1): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  292.199567][ T9672] BTRFS info (device loop1): using crc32c checksum algorithm
[  292.199593][ T9672] BTRFS warning (device loop1): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  292.201203][ T9667] BTRFS error (device loop3): failed to load root extent
[  292.201242][ T9667] BTRFS warning (device loop3): try to load backup roots slot 1
[  292.201872][ T9669] loop2: detected capacity change from 0 to 32768
[  292.202845][ T9669] btrfs: Deprecated parameter 'usebackuproot'
[  292.202858][ T9669] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  292.203532][ T9669] BTRFS info: device /dev/loop2 (7:2) using temp-fsid 260ce3f3-3654-443d-9fa5-9e357ac9dd73
[  292.203583][ T9669] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop2 (7:2) scanned by syz.2.222 (9669)
[  292.235196][ T9667] BTRFS warning (device loop3): couldn't read tree root
[  292.235218][ T9667] BTRFS warning (device loop3): try to load backup roots slot 2
[  292.262200][ T1025] BTRFS error (device loop3): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  292.262347][ T9667] BTRFS warning (device loop3): couldn't read tree root
[  292.262379][ T9667] BTRFS warning (device loop3): try to load backup roots slot 3
[  292.307623][ T9669] BTRFS info (device loop2): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  292.307651][ T9669] BTRFS info (device loop2): using crc32c checksum algorithm
[  292.307675][ T9669] BTRFS warning (device loop2): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  292.402240][ T9667] BTRFS info (device loop3): rebuilding free space tree
[  292.439609][ T9675] BTRFS info (device loop5): disabling free space tree
[  292.439690][ T9675] BTRFS info (device loop5): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  292.439712][ T9675] BTRFS info (device loop5): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  292.529704][ T9675] BTRFS info (device loop5): checking UUID tree
[  292.534658][ T9667] BTRFS info (device loop3): disabling free space tree
[  292.534740][ T9667] BTRFS info (device loop3): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  292.534762][ T9667] BTRFS info (device loop3): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  292.545004][ T9667] BTRFS info (device loop3): checking UUID tree
[  292.545717][ T9675] BTRFS info (device loop5): enabling ssd optimizations
[  292.545736][ T9675] BTRFS info (device loop5): disabling tree log
[  292.545749][ T9675] BTRFS info (device loop5): turning on flush-on-commit
[  292.545763][ T9675] BTRFS info (device loop5): turning on async discard
[  292.545777][ T9675] BTRFS info (device loop5): enabling disk space caching
[  292.545790][ T9675] BTRFS info (device loop5): force clearing of disk cache
[  292.545804][ T9675] BTRFS info (device loop5): trying to use backup root at mount time
[  292.545818][ T9675] BTRFS info (device loop5): use zstd compression, level 3
[  292.609221][ T9667] BTRFS info (device loop3): enabling ssd optimizations
[  292.609243][ T9667] BTRFS info (device loop3): disabling tree log
[  292.609258][ T9667] BTRFS info (device loop3): turning on flush-on-commit
[  292.609270][ T9667] BTRFS info (device loop3): turning on async discard
[  292.609284][ T9667] BTRFS info (device loop3): enabling disk space caching
[  292.609297][ T9667] BTRFS info (device loop3): force clearing of disk cache
[  292.609324][ T9667] BTRFS info (device loop3): trying to use backup root at mount time
[  292.609340][ T9667] BTRFS info (device loop3): use zstd compression, level 3
[  292.698992][ T9672] BTRFS error (device loop1): failed to load root extent
[  292.699028][ T9672] BTRFS warning (device loop1): try to load backup roots slot 1
[  292.704293][ T9672] BTRFS warning (device loop1): couldn't read tree root
[  292.714502][ T9672] BTRFS warning (device loop1): try to load backup roots slot 2
[  292.715710][   T67] BTRFS error (device loop1): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  292.747829][ T9672] BTRFS warning (device loop1): couldn't read tree root
[  292.747850][ T9672] BTRFS warning (device loop1): try to load backup roots slot 3
[  292.750800][ T9669] BTRFS error (device loop2): failed to load root extent
[  292.750837][ T9669] BTRFS warning (device loop2): try to load backup roots slot 1
[  292.751210][ T9669] BTRFS warning (device loop2): couldn't read tree root
[  292.751227][ T9669] BTRFS warning (device loop2): try to load backup roots slot 2
[  292.752893][   T13] BTRFS error (device loop2): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  292.753198][ T9669] BTRFS warning (device loop2): couldn't read tree root
[  292.753215][ T9669] BTRFS warning (device loop2): try to load backup roots slot 3
[  292.808820][ T9669] BTRFS info (device loop2): rebuilding free space tree
[  292.917941][ T9672] BTRFS info (device loop1): rebuilding free space tree
[  292.970675][ T9669] BTRFS info (device loop2): disabling free space tree
[  292.970752][ T9669] BTRFS info (device loop2): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  292.970774][ T9669] BTRFS info (device loop2): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  293.109370][ T9669] BTRFS info (device loop2): checking UUID tree
[  293.109931][ T9669] BTRFS error (device loop2): failed to check the UUID tree: -4
[  293.240211][ T5768] BTRFS info (device loop4): last unmount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  293.270979][ T9672] BTRFS info (device loop1): disabling free space tree
[  293.271065][ T9672] BTRFS info (device loop1): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  293.271087][ T9672] BTRFS info (device loop1): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  293.344621][ T9672] BTRFS info (device loop1): checking UUID tree
[  293.344694][ T9672] BTRFS error (device loop1): failed to check the UUID tree: -4
[  293.441605][ T7677] BTRFS info (device loop5): last unmount of filesystem 12c85f64-6fa3-4a3e-9711-27ccb766df2e
[  293.728193][ T9669] BTRFS error (device loop2): open_ctree failed: -4
[  293.879910][ T9672] BTRFS error (device loop1): open_ctree failed: -4
2026/05/26 04:53:26 executed programs: 220
[  294.250587][ T5757] BTRFS info (device loop3): last unmount of filesystem ed52a6e1-5ef7-40e8-9654-01722b560439
[  295.201308][ T9761] loop4: detected capacity change from 0 to 32768
[  295.203943][ T9761] btrfs: Deprecated parameter 'usebackuproot'
[  295.203961][ T9761] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  295.225030][ T9761] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop4 (7:4) scanned by syz.4.225 (9761)
[  295.240633][ T9761] BTRFS info (device loop4): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  295.240659][ T9761] BTRFS info (device loop4): using crc32c checksum algorithm
[  295.240684][ T9761] BTRFS warning (device loop4): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  295.462635][   T13] btrfs_validate_extent_buffer: 10 callbacks suppressed
[  295.462655][   T13] BTRFS warning (device loop4): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  295.488784][ T9761] BTRFS error (device loop4): failed to load root extent
[  295.488825][ T9761] BTRFS warning (device loop4): try to load backup roots slot 1
[  295.525228][   T67] BTRFS warning (device loop4): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  295.525595][ T9761] BTRFS warning (device loop4): couldn't read tree root
[  295.525613][ T9761] BTRFS warning (device loop4): try to load backup roots slot 2
[  295.541102][   T13] BTRFS error (device loop4): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  295.541385][ T9761] BTRFS warning (device loop4): couldn't read tree root
[  295.541402][ T9761] BTRFS warning (device loop4): try to load backup roots slot 3
[  295.640566][ T9763] loop2: detected capacity change from 0 to 32768
[  295.641711][ T9763] btrfs: Deprecated parameter 'usebackuproot'
[  295.641729][ T9763] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  295.642689][ T9763] BTRFS info: device /dev/loop2 (7:2) using temp-fsid 0802afcc-4e25-4292-8d6b-cf54f1ae406e
[  295.642743][ T9763] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop2 (7:2) scanned by syz.2.226 (9763)
[  295.662368][ T9761] BTRFS info (device loop4): rebuilding free space tree
[  295.679720][ T9763] BTRFS info (device loop2): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  295.679747][ T9763] BTRFS info (device loop2): using crc32c checksum algorithm
[  295.679773][ T9763] BTRFS warning (device loop2): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  295.956194][ T9765] loop1: detected capacity change from 0 to 32768
[  296.018180][ T9765] btrfs: Deprecated parameter 'usebackuproot'
[  296.018200][ T9765] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  296.038831][ T9765] BTRFS info: device /dev/loop1 (7:1) using temp-fsid 222b4afa-3204-402b-9097-98b0c0b7957b
[  296.038889][ T9765] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop1 (7:1) scanned by syz.1.227 (9765)
[  296.040392][  T107] BTRFS warning (device loop2): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  296.041885][ T9763] BTRFS error (device loop2): failed to load root extent
[  296.041922][ T9763] BTRFS warning (device loop2): try to load backup roots slot 1
[  296.042215][   T56] BTRFS warning (device loop2): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  296.042347][ T9763] BTRFS warning (device loop2): couldn't read tree root
[  296.042362][ T9763] BTRFS warning (device loop2): try to load backup roots slot 2
[  296.042699][   T56] BTRFS error (device loop2): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  296.042817][ T9763] BTRFS warning (device loop2): couldn't read tree root
[  296.042832][ T9763] BTRFS warning (device loop2): try to load backup roots slot 3
[  296.118927][ T9765] BTRFS info (device loop1): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  296.118956][ T9765] BTRFS info (device loop1): using crc32c checksum algorithm
[  296.118981][ T9765] BTRFS warning (device loop1): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  296.199864][ T9763] BTRFS info (device loop2): rebuilding free space tree
[  296.401073][ T9761] BTRFS info (device loop4): disabling free space tree
[  296.401148][ T9761] BTRFS info (device loop4): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  296.401171][ T9761] BTRFS info (device loop4): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  296.471539][ T1378] BTRFS warning (device loop1): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  296.472433][ T9761] BTRFS info (device loop4): checking UUID tree
[  296.480263][ T9761] BTRFS info (device loop4): enabling ssd optimizations
[  296.480285][ T9761] BTRFS info (device loop4): disabling tree log
[  296.480299][ T9761] BTRFS info (device loop4): turning on flush-on-commit
[  296.480311][ T9761] BTRFS info (device loop4): turning on async discard
[  296.480325][ T9761] BTRFS info (device loop4): enabling disk space caching
[  296.480339][ T9761] BTRFS info (device loop4): force clearing of disk cache
[  296.480352][ T9761] BTRFS info (device loop4): trying to use backup root at mount time
[  296.480367][ T9761] BTRFS info (device loop4): use zstd compression, level 3
[  296.481034][ T9765] BTRFS error (device loop1): failed to load root extent
[  296.481070][ T9765] BTRFS warning (device loop1): try to load backup roots slot 1
[  296.481646][   T67] BTRFS warning (device loop1): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  296.483419][ T9765] BTRFS warning (device loop1): couldn't read tree root
[  296.483437][ T9765] BTRFS warning (device loop1): try to load backup roots slot 2
[  296.486430][   T56] BTRFS error (device loop1): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  296.487791][ T9765] BTRFS warning (device loop1): couldn't read tree root
[  296.487809][ T9765] BTRFS warning (device loop1): try to load backup roots slot 3
[  296.587314][ T9763] BTRFS info (device loop2): disabling free space tree
[  296.587387][ T9763] BTRFS info (device loop2): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  296.587409][ T9763] BTRFS info (device loop2): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  296.648738][ T9763] BTRFS info (device loop2): checking UUID tree
[  296.651358][ T9763] BTRFS info (device loop2): enabling ssd optimizations
[  296.651438][ T9763] BTRFS info (device loop2): disabling tree log
[  296.651453][ T9763] BTRFS info (device loop2): turning on flush-on-commit
[  296.651467][ T9763] BTRFS info (device loop2): turning on async discard
[  296.651480][ T9763] BTRFS info (device loop2): enabling disk space caching
[  296.651493][ T9763] BTRFS info (device loop2): force clearing of disk cache
[  296.651506][ T9763] BTRFS info (device loop2): trying to use backup root at mount time
[  296.651521][ T9763] BTRFS info (device loop2): use zstd compression, level 3
[  296.728006][ T9765] BTRFS info (device loop1): rebuilding free space tree
[  297.051258][ T9765] BTRFS info (device loop1): disabling free space tree
[  297.051346][ T9765] BTRFS info (device loop1): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  297.051369][ T9765] BTRFS info (device loop1): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  297.171668][ T9765] BTRFS info (device loop1): checking UUID tree
[  297.173804][ T5756] BTRFS info (device loop2): last unmount of filesystem 0802afcc-4e25-4292-8d6b-cf54f1ae406e
[  297.221837][ T9765] BTRFS info (device loop1): enabling ssd optimizations
[  297.221857][ T9765] BTRFS info (device loop1): disabling tree log
[  297.221871][ T9765] BTRFS info (device loop1): turning on flush-on-commit
[  297.221885][ T9765] BTRFS info (device loop1): turning on async discard
[  297.221898][ T9765] BTRFS info (device loop1): enabling disk space caching
[  297.221912][ T9765] BTRFS info (device loop1): force clearing of disk cache
[  297.221925][ T9765] BTRFS info (device loop1): trying to use backup root at mount time
[  297.221941][ T9765] BTRFS info (device loop1): use zstd compression, level 3
[  297.441903][ T5755] BTRFS info (device loop1): last unmount of filesystem 222b4afa-3204-402b-9097-98b0c0b7957b
[  297.671836][ T9770] loop5: detected capacity change from 0 to 32768
[  297.672828][ T9770] btrfs: Deprecated parameter 'usebackuproot'
[  297.672845][ T9770] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  297.715011][ T9770] BTRFS info: device /dev/loop5 (7:5) using temp-fsid 00b86681-4559-4ce6-befd-2e1de710871b
[  297.715070][ T9770] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop5 (7:5) scanned by syz.5.224 (9770)
[  297.775832][ T9770] BTRFS info (device loop5): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  297.775850][ T9770] BTRFS info (device loop5): using crc32c checksum algorithm
[  297.775867][ T9770] BTRFS warning (device loop5): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  297.965324][ T1378] BTRFS warning (device loop5): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  297.965492][ T9770] BTRFS error (device loop5): failed to load root extent
[  297.967398][ T9770] BTRFS warning (device loop5): try to load backup roots slot 1
[  297.967728][  T107] BTRFS warning (device loop5): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  297.967852][ T9770] BTRFS warning (device loop5): couldn't read tree root
[  297.967867][ T9770] BTRFS warning (device loop5): try to load backup roots slot 2
[  297.968147][  T107] BTRFS error (device loop5): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  297.968263][ T9770] BTRFS warning (device loop5): couldn't read tree root
[  297.968278][ T9770] BTRFS warning (device loop5): try to load backup roots slot 3
[  298.147110][ T5768] BTRFS info (device loop4): last unmount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  298.444304][ T9770] BTRFS error (device loop5): open_ctree failed: -4
[  298.697682][ T9822] loop3: detected capacity change from 0 to 32768
[  298.703966][ T9822] btrfs: Deprecated parameter 'usebackuproot'
[  298.703986][ T9822] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  298.706748][ T9822] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop3 (7:3) scanned by syz.3.229 (9822)
[  298.722300][ T9822] BTRFS info (device loop3): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  298.722326][ T9822] BTRFS info (device loop3): using crc32c checksum algorithm
[  298.722360][ T9822] BTRFS warning (device loop3): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  298.933569][   T67] BTRFS warning (device loop3): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  298.933734][ T9822] BTRFS error (device loop3): failed to load root extent
[  298.933769][ T9822] BTRFS warning (device loop3): try to load backup roots slot 1
[  298.934079][   T67] BTRFS warning (device loop3): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  298.934202][ T9822] BTRFS warning (device loop3): couldn't read tree root
[  298.934218][ T9822] BTRFS warning (device loop3): try to load backup roots slot 2
[  298.979304][ T1378] BTRFS error (device loop3): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  298.979512][ T9822] BTRFS warning (device loop3): couldn't read tree root
[  298.979531][ T9822] BTRFS warning (device loop3): try to load backup roots slot 3
[  299.019933][ T9822] BTRFS info (device loop3): rebuilding free space tree
[  299.197608][ T9826] loop2: detected capacity change from 0 to 32768
[  299.198729][ T9826] btrfs: Deprecated parameter 'usebackuproot'
[  299.198747][ T9826] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  299.217003][ T9826] BTRFS info: device /dev/loop2 (7:2) using temp-fsid a6dc8adb-fa55-4ba8-a37b-69d6ba9ab3b0
[  299.217060][ T9826] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop2 (7:2) scanned by syz.2.230 (9826)
[  299.292802][ T9826] BTRFS info (device loop2): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  299.292835][ T9826] BTRFS info (device loop2): using crc32c checksum algorithm
[  299.292861][ T9826] BTRFS warning (device loop2): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  299.502319][ T9826] BTRFS error (device loop2): failed to load root extent
[  299.502361][ T9826] BTRFS warning (device loop2): try to load backup roots slot 1
[  299.510892][ T9826] BTRFS warning (device loop2): couldn't read tree root
[  299.510915][ T9826] BTRFS warning (device loop2): try to load backup roots slot 2
[  299.534478][ T1326] BTRFS error (device loop2): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  299.536638][ T9826] BTRFS warning (device loop2): couldn't read tree root
[  299.536657][ T9826] BTRFS warning (device loop2): try to load backup roots slot 3
[  299.558004][ T9822] BTRFS info (device loop3): disabling free space tree
[  299.558077][ T9822] BTRFS info (device loop3): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  299.558098][ T9822] BTRFS info (device loop3): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  299.702727][ T9832] loop1: detected capacity change from 0 to 32768
[  299.712299][ T9832] btrfs: Deprecated parameter 'usebackuproot'
[  299.712319][ T9832] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  299.738541][ T9822] BTRFS info (device loop3): checking UUID tree
[  299.740569][ T9822] BTRFS info (device loop3): enabling ssd optimizations
[  299.740588][ T9822] BTRFS info (device loop3): disabling tree log
[  299.740603][ T9822] BTRFS info (device loop3): turning on flush-on-commit
[  299.740616][ T9822] BTRFS info (device loop3): turning on async discard
[  299.740630][ T9822] BTRFS info (device loop3): enabling disk space caching
[  299.740643][ T9822] BTRFS info (device loop3): force clearing of disk cache
[  299.740658][ T9822] BTRFS info (device loop3): trying to use backup root at mount time
[  299.740673][ T9822] BTRFS info (device loop3): use zstd compression, level 3
[  299.743811][ T9832] BTRFS info: device /dev/loop1 (7:1) using temp-fsid 6413788f-39ad-4743-9b79-f95088f98ec4
[  299.810519][ T9826] BTRFS info (device loop2): rebuilding free space tree
[  299.864172][ T9832] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop1 (7:1) scanned by syz.1.231 (9832)
[  299.909712][ T9832] BTRFS info (device loop1): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  299.909741][ T9832] BTRFS info (device loop1): using crc32c checksum algorithm
[  299.909767][ T9832] BTRFS warning (device loop1): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
2026/05/26 04:53:32 executed programs: 227
[  300.188802][ T5757] BTRFS info (device loop3): last unmount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  300.231746][ T9832] BTRFS error (device loop1): failed to load root extent
[  300.231803][ T9832] BTRFS warning (device loop1): try to load backup roots slot 1
[  300.232219][ T9832] BTRFS warning (device loop1): couldn't read tree root
[  300.232237][ T9832] BTRFS warning (device loop1): try to load backup roots slot 2
[  300.232488][ T1360] BTRFS error (device loop1): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  300.232599][ T9832] BTRFS warning (device loop1): couldn't read tree root
[  300.232614][ T9832] BTRFS warning (device loop1): try to load backup roots slot 3
[  300.350397][ T9826] BTRFS info (device loop2): disabling free space tree
[  300.350471][ T9826] BTRFS info (device loop2): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  300.350495][ T9826] BTRFS info (device loop2): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  300.425801][ T9832] BTRFS info (device loop1): rebuilding free space tree
[  300.438922][ T9826] BTRFS info (device loop2): checking UUID tree
[  300.449608][ T9826] BTRFS info (device loop2): enabling ssd optimizations
[  300.449628][ T9826] BTRFS info (device loop2): disabling tree log
[  300.449643][ T9826] BTRFS info (device loop2): turning on flush-on-commit
[  300.449656][ T9826] BTRFS info (device loop2): turning on async discard
[  300.449670][ T9826] BTRFS info (device loop2): enabling disk space caching
[  300.449683][ T9826] BTRFS info (device loop2): force clearing of disk cache
[  300.449697][ T9826] BTRFS info (device loop2): trying to use backup root at mount time
[  300.449712][ T9826] BTRFS info (device loop2): use zstd compression, level 3
[  300.878468][ T9832] BTRFS info (device loop1): disabling free space tree
[  300.878555][ T9832] BTRFS info (device loop1): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  300.878577][ T9832] BTRFS info (device loop1): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  301.011367][ T9849] loop5: detected capacity change from 0 to 32768
[  301.032886][ T9832] BTRFS info (device loop1): checking UUID tree
[  301.032957][ T9832] BTRFS error (device loop1): failed to check the UUID tree: -4
[  301.041633][ T9849] btrfs: Deprecated parameter 'usebackuproot'
[  301.041651][ T9849] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  301.058476][ T9849] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop5 (7:5) scanned by syz.5.233 (9849)
[  301.107676][ T9849] BTRFS info (device loop5): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  301.107704][ T9849] BTRFS info (device loop5): using crc32c checksum algorithm
[  301.107730][ T9849] BTRFS warning (device loop5): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  301.281110][   T67] btrfs_validate_extent_buffer: 4 callbacks suppressed
[  301.281129][   T67] BTRFS warning (device loop5): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  301.281281][ T9849] BTRFS error (device loop5): failed to load root extent
[  301.286534][ T9849] BTRFS warning (device loop5): try to load backup roots slot 1
[  301.317116][ T1378] BTRFS warning (device loop5): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  301.317221][ T9849] BTRFS warning (device loop5): couldn't read tree root
[  301.317238][ T9849] BTRFS warning (device loop5): try to load backup roots slot 2
[  301.319860][ T1378] BTRFS error (device loop5): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  301.319951][ T9849] BTRFS warning (device loop5): couldn't read tree root
[  301.319966][ T9849] BTRFS warning (device loop5): try to load backup roots slot 3
[  301.363409][ T9832] BTRFS error (device loop1): open_ctree failed: -4
[  301.527001][ T9849] BTRFS info (device loop5): rebuilding free space tree
[  301.996897][ T9849] BTRFS info (device loop5): disabling free space tree
[  301.996986][ T9849] BTRFS info (device loop5): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  301.997008][ T9849] BTRFS info (device loop5): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  302.001465][ T5756] BTRFS info (device loop2): last unmount of filesystem a6dc8adb-fa55-4ba8-a37b-69d6ba9ab3b0
[  302.037836][ T9849] BTRFS info (device loop5): checking UUID tree
[  302.048582][ T9849] BTRFS error (device loop5): failed to check the UUID tree: -4
[  302.228865][ T9877] loop4: detected capacity change from 0 to 32768
[  302.233949][ T9877] btrfs: Deprecated parameter 'usebackuproot'
[  302.233966][ T9877] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  302.239280][ T9877] BTRFS info: device /dev/loop4 (7:4) using temp-fsid 4f83fc83-fa7c-416e-846a-ef6c4dd62c26
[  302.239337][ T9877] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop4 (7:4) scanned by syz.4.232 (9877)
[  302.304498][ T9877] BTRFS info (device loop4): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  302.304528][ T9877] BTRFS info (device loop4): using crc32c checksum algorithm
[  302.304553][ T9877] BTRFS warning (device loop4): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  302.568695][ T9849] BTRFS error (device loop5): open_ctree failed: -4
[  302.669928][ T1360] BTRFS warning (device loop4): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  302.670150][ T9877] BTRFS error (device loop4): failed to load root extent
[  302.670187][ T9877] BTRFS warning (device loop4): try to load backup roots slot 1
[  302.678198][   T67] BTRFS warning (device loop4): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  302.678367][ T9877] BTRFS warning (device loop4): couldn't read tree root
[  302.678384][ T9877] BTRFS warning (device loop4): try to load backup roots slot 2
[  302.678714][   T67] BTRFS error (device loop4): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  302.716464][ T9877] BTRFS warning (device loop4): couldn't read tree root
[  302.716487][ T9877] BTRFS warning (device loop4): try to load backup roots slot 3
[  302.741457][ T9898] loop3: detected capacity change from 0 to 32768
[  302.752883][ T9898] btrfs: Deprecated parameter 'usebackuproot'
[  302.752907][ T9898] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  302.773104][ T9898] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop3 (7:3) scanned by syz.3.234 (9898)
[  302.797736][ T9877] BTRFS info (device loop4): rebuilding free space tree
[  302.826433][ T9898] BTRFS info (device loop3): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  302.826459][ T9898] BTRFS info (device loop3): using crc32c checksum algorithm
[  302.826486][ T9898] BTRFS warning (device loop3): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  302.957267][ T9877] BTRFS info (device loop4): disabling free space tree
[  302.957342][ T9877] BTRFS info (device loop4): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  302.957364][ T9877] BTRFS info (device loop4): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  303.036929][ T9877] BTRFS info (device loop4): checking UUID tree
[  303.036999][ T9877] BTRFS error (device loop4): failed to check the UUID tree: -4
[  303.244922][ T9877] BTRFS error (device loop4): open_ctree failed: -4
[  303.279617][   T67] BTRFS warning (device loop3): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  303.279925][ T9898] BTRFS error (device loop3): failed to load root extent
[  303.279965][ T9898] BTRFS warning (device loop3): try to load backup roots slot 1
[  303.297094][ T1360] BTRFS warning (device loop3): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  303.297252][ T9898] BTRFS warning (device loop3): couldn't read tree root
[  303.297269][ T9898] BTRFS warning (device loop3): try to load backup roots slot 2
[  303.305911][ T1360] BTRFS error (device loop3): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  303.306056][ T9898] BTRFS warning (device loop3): couldn't read tree root
[  303.306073][ T9898] BTRFS warning (device loop3): try to load backup roots slot 3
[  303.421086][ T9898] BTRFS info (device loop3): rebuilding free space tree
[  303.549068][ T9898] BTRFS info (device loop3): disabling free space tree
[  303.549153][ T9898] BTRFS info (device loop3): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  303.549176][ T9898] BTRFS info (device loop3): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  303.610525][ T9898] BTRFS info (device loop3): checking UUID tree
[  303.621385][ T9898] BTRFS info (device loop3): enabling ssd optimizations
[  303.621406][ T9898] BTRFS info (device loop3): disabling tree log
[  303.621420][ T9898] BTRFS info (device loop3): turning on flush-on-commit
[  303.621433][ T9898] BTRFS info (device loop3): turning on async discard
[  303.621447][ T9898] BTRFS info (device loop3): enabling disk space caching
[  303.621460][ T9898] BTRFS info (device loop3): force clearing of disk cache
[  303.621474][ T9898] BTRFS info (device loop3): trying to use backup root at mount time
[  303.621490][ T9898] BTRFS info (device loop3): use zstd compression, level 3
[  303.993317][ T9930] loop2: detected capacity change from 0 to 32768
[  304.008270][ T9930] btrfs: Deprecated parameter 'usebackuproot'
[  304.008289][ T9930] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  304.020062][ T9930] BTRFS info: device /dev/loop2 (7:2) using temp-fsid 349c9778-ceca-4b6a-8d95-2f68446f87e8
[  304.020119][ T9930] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop2 (7:2) scanned by syz.2.236 (9930)
[  304.053775][ T9930] BTRFS info (device loop2): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  304.053803][ T9930] BTRFS info (device loop2): using crc32c checksum algorithm
[  304.053827][ T9930] BTRFS warning (device loop2): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  304.070441][ T9916] loop1: detected capacity change from 0 to 32768
[  304.076039][ T9916] btrfs: Deprecated parameter 'usebackuproot'
[  304.076056][ T9916] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  304.084068][ T9916] BTRFS info: device /dev/loop1 (7:1) using temp-fsid 6c38050a-6842-488a-a473-192258b4818e
[  304.084121][ T9916] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop1 (7:1) scanned by syz.1.235 (9916)
[  304.105504][ T9916] BTRFS info (device loop1): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  304.105534][ T9916] BTRFS info (device loop1): using crc32c checksum algorithm
[  304.105559][ T9916] BTRFS warning (device loop1): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  304.198187][ T5757] BTRFS info (device loop3): last unmount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  304.533043][ T1378] BTRFS warning (device loop2): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  304.533191][ T9930] BTRFS error (device loop2): failed to load root extent
[  304.533226][ T9930] BTRFS warning (device loop2): try to load backup roots slot 1
[  304.571665][   T12] BTRFS warning (device loop2): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  304.579500][ T9930] BTRFS warning (device loop2): couldn't read tree root
[  304.579523][ T9930] BTRFS warning (device loop2): try to load backup roots slot 2
[  304.581824][ T1326] BTRFS error (device loop2): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  304.581955][ T9930] BTRFS warning (device loop2): couldn't read tree root
[  304.581971][ T9930] BTRFS warning (device loop2): try to load backup roots slot 3
[  304.656369][   T56] BTRFS warning (device loop1): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  304.656501][ T9916] BTRFS error (device loop1): failed to load root extent
[  304.656535][ T9916] BTRFS warning (device loop1): try to load backup roots slot 1
[  304.658376][   T56] BTRFS warning (device loop1): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  304.658604][ T9916] BTRFS warning (device loop1): couldn't read tree root
[  304.658622][ T9916] BTRFS warning (device loop1): try to load backup roots slot 2
[  304.658974][   T56] BTRFS error (device loop1): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  304.659077][ T9916] BTRFS warning (device loop1): couldn't read tree root
[  304.659093][ T9916] BTRFS warning (device loop1): try to load backup roots slot 3
[  304.677079][ T9930] BTRFS info (device loop2): rebuilding free space tree
[  304.798742][ T9937] loop5: detected capacity change from 0 to 32768
[  304.799522][ T9937] btrfs: Deprecated parameter 'usebackuproot'
[  304.799534][ T9937] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  304.806260][ T9916] BTRFS info (device loop1): rebuilding free space tree
[  304.838634][ T9937] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop5 (7:5) scanned by syz.5.237 (9937)
[  304.913777][ T9937] BTRFS info (device loop5): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  304.913831][ T9937] BTRFS info (device loop5): using crc32c checksum algorithm
[  304.913858][ T9937] BTRFS warning (device loop5): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  305.143489][ T9937] BTRFS error (device loop5): failed to load root extent
[  305.143533][ T9937] BTRFS warning (device loop5): try to load backup roots slot 1
[  305.150105][ T9937] BTRFS warning (device loop5): couldn't read tree root
[  305.150127][ T9937] BTRFS warning (device loop5): try to load backup roots slot 2
[  305.150611][   T12] BTRFS error (device loop5): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  305.164576][ T9937] BTRFS warning (device loop5): couldn't read tree root
[  305.164597][ T9937] BTRFS warning (device loop5): try to load backup roots slot 3
[  305.203603][ T9916] BTRFS info (device loop1): disabling free space tree
[  305.203675][ T9916] BTRFS info (device loop1): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  305.203696][ T9916] BTRFS info (device loop1): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  305.242400][ T9930] BTRFS info (device loop2): disabling free space tree
[  305.242485][ T9930] BTRFS info (device loop2): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  305.242507][ T9930] BTRFS info (device loop2): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  305.300112][ T9930] BTRFS info (device loop2): checking UUID tree
[  305.306043][ T9916] BTRFS info (device loop1): checking UUID tree
[  305.306103][ T9916] BTRFS error (device loop1): failed to check the UUID tree: -4
[  305.340570][ T9930] BTRFS info (device loop2): enabling ssd optimizations
[  305.340594][ T9930] BTRFS info (device loop2): disabling tree log
[  305.340607][ T9930] BTRFS info (device loop2): turning on flush-on-commit
[  305.340620][ T9930] BTRFS info (device loop2): turning on async discard
[  305.340634][ T9930] BTRFS info (device loop2): enabling disk space caching
[  305.340663][ T9930] BTRFS info (device loop2): force clearing of disk cache
[  305.340677][ T9930] BTRFS info (device loop2): trying to use backup root at mount time
[  305.340692][ T9930] BTRFS info (device loop2): use zstd compression, level 3
[  305.351639][ T9937] BTRFS info (device loop5): rebuilding free space tree
[  305.466477][ T9956] loop4: detected capacity change from 0 to 32768
[  305.487713][ T9956] btrfs: Deprecated parameter 'usebackuproot'
[  305.487733][ T9956] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  305.500599][ T9956] BTRFS info: device /dev/loop4 (7:4) using temp-fsid 5a2f544c-fa57-4718-ba7b-7fdc2853508a
[  305.500663][ T9956] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop4 (7:4) scanned by syz.4.238 (9956)
[  305.763926][ T9956] BTRFS info (device loop4): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  305.763955][ T9956] BTRFS info (device loop4): using crc32c checksum algorithm
[  305.763980][ T9956] BTRFS warning (device loop4): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  305.778426][ T9916] BTRFS error (device loop1): open_ctree failed: -4
2026/05/26 04:53:38 executed programs: 233
[  306.043735][ T9937] BTRFS info (device loop5): disabling free space tree
[  306.043811][ T9937] BTRFS info (device loop5): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  306.043833][ T9937] BTRFS info (device loop5): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  306.121268][ T9956] BTRFS error (device loop4): failed to load root extent
[  306.121296][ T9956] BTRFS warning (device loop4): try to load backup roots slot 1
[  306.123079][ T9956] BTRFS warning (device loop4): couldn't read tree root
[  306.123093][ T9956] BTRFS warning (device loop4): try to load backup roots slot 2
[  306.123344][  T107] BTRFS error (device loop4): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  306.125046][ T9956] BTRFS warning (device loop4): couldn't read tree root
[  306.125064][ T9956] BTRFS warning (device loop4): try to load backup roots slot 3
[  306.255406][ T9937] BTRFS info (device loop5): checking UUID tree
[  306.255475][ T9937] BTRFS error (device loop5): failed to check the UUID tree: -4
[  306.316190][ T9956] BTRFS info (device loop4): rebuilding free space tree
[  306.441368][ T9937] BTRFS error (device loop5): open_ctree failed: -4
[  306.593288][ T5756] BTRFS info (device loop2): last unmount of filesystem 349c9778-ceca-4b6a-8d95-2f68446f87e8
[  306.672774][ T9956] BTRFS info (device loop4): disabling free space tree
[  306.672850][ T9956] BTRFS info (device loop4): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  306.672873][ T9956] BTRFS info (device loop4): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  306.756131][ T9956] BTRFS info (device loop4): checking UUID tree
[  306.756394][ T9956] BTRFS error (device loop4): failed to check the UUID tree: -4
[  307.115579][ T9956] BTRFS error (device loop4): open_ctree failed: -4
[  307.432227][ T9987] loop3: detected capacity change from 0 to 32768
[  307.433285][ T9987] btrfs: Deprecated parameter 'usebackuproot'
[  307.433303][ T9987] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  307.493720][ T9987] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop3 (7:3) scanned by syz.3.239 (9987)
[  307.651134][ T9987] BTRFS info (device loop3): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  307.651164][ T9987] BTRFS info (device loop3): using crc32c checksum algorithm
[  307.651189][ T9987] BTRFS warning (device loop3): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  307.898634][   T13] btrfs_validate_extent_buffer: 4 callbacks suppressed
[  307.933406][   T13] BTRFS warning (device loop3): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  307.933904][ T9987] BTRFS error (device loop3): failed to load root extent
[  307.933941][ T9987] BTRFS warning (device loop3): try to load backup roots slot 1
[  307.961355][  T107] BTRFS warning (device loop3): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  307.998414][ T9987] BTRFS warning (device loop3): couldn't read tree root
[  307.998438][ T9987] BTRFS warning (device loop3): try to load backup roots slot 2
[  308.017504][  T180] BTRFS error (device loop3): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  308.017633][ T9987] BTRFS warning (device loop3): couldn't read tree root
[  308.017650][ T9987] BTRFS warning (device loop3): try to load backup roots slot 3
[  308.351752][ T9987] BTRFS error (device loop3): open_ctree failed: -4
[  308.381103][T10026] loop1: detected capacity change from 0 to 32768
[  308.386471][T10026] btrfs: Deprecated parameter 'usebackuproot'
[  308.386491][T10026] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  308.412575][T10026] BTRFS info: device /dev/loop1 (7:1) using temp-fsid 7e5fdcf8-8ece-47ec-aca3-637bc4b2f98e
[  308.412634][T10026] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop1 (7:1) scanned by syz.1.241 (10026)
[  308.547507][T10026] BTRFS info (device loop1): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  308.547538][T10026] BTRFS info (device loop1): using crc32c checksum algorithm
[  308.547564][T10026] BTRFS warning (device loop1): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  308.565334][T10037] loop2: detected capacity change from 0 to 32768
[  308.566421][T10037] btrfs: Deprecated parameter 'usebackuproot'
[  308.566439][T10037] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  308.611410][T10037] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop2 (7:2) scanned by syz.2.240 (10037)
[  308.666468][T10037] BTRFS info (device loop2): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  308.666498][T10037] BTRFS info (device loop2): using crc32c checksum algorithm
[  308.666525][T10037] BTRFS warning (device loop2): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  308.709297][   T13] BTRFS warning (device loop1): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  308.710796][T10026] BTRFS error (device loop1): failed to load root extent
[  308.710834][T10026] BTRFS warning (device loop1): try to load backup roots slot 1
[  308.740712][  T107] BTRFS warning (device loop1): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  308.740923][T10026] BTRFS warning (device loop1): couldn't read tree root
[  308.740940][T10026] BTRFS warning (device loop1): try to load backup roots slot 2
[  308.741236][ T1360] BTRFS error (device loop1): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  308.741356][T10026] BTRFS warning (device loop1): couldn't read tree root
[  308.741371][T10026] BTRFS warning (device loop1): try to load backup roots slot 3
[  308.829544][T10026] BTRFS info (device loop1): rebuilding free space tree
[  308.929629][T10035] loop5: detected capacity change from 0 to 32768
[  308.945498][T10035] btrfs: Deprecated parameter 'usebackuproot'
[  308.945519][T10035] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  308.964829][T10035] BTRFS info: device /dev/loop5 (7:5) using temp-fsid 66a144bf-2f32-4784-bd60-7219c9917a62
[  308.964890][T10035] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop5 (7:5) scanned by syz.5.242 (10035)
[  309.030392][T10035] BTRFS info (device loop5): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  309.030422][T10035] BTRFS info (device loop5): using crc32c checksum algorithm
[  309.030444][T10035] BTRFS warning (device loop5): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  309.166567][T10026] BTRFS info (device loop1): disabling free space tree
[  309.166641][T10026] BTRFS info (device loop1): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  309.166662][T10026] BTRFS info (device loop1): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  309.170585][  T107] BTRFS warning (device loop2): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  309.171781][T10037] BTRFS error (device loop2): failed to load root extent
[  309.171814][T10037] BTRFS warning (device loop2): try to load backup roots slot 1
[  309.172894][ T1378] BTRFS warning (device loop2): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  309.250610][T10026] BTRFS info (device loop1): checking UUID tree
[  309.250688][T10026] BTRFS error (device loop1): failed to check the UUID tree: -4
[  309.259001][T10037] BTRFS warning (device loop2): couldn't read tree root
[  309.259021][T10037] BTRFS warning (device loop2): try to load backup roots slot 2
[  309.288392][  T180] BTRFS error (device loop2): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  309.288522][T10037] BTRFS warning (device loop2): couldn't read tree root
[  309.288537][T10037] BTRFS warning (device loop2): try to load backup roots slot 3
[  309.377927][  T107] BTRFS warning (device loop5): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  309.396639][T10035] BTRFS error (device loop5): failed to load root extent
[  309.396682][T10035] BTRFS warning (device loop5): try to load backup roots slot 1
[  309.399348][  T180] BTRFS warning (device loop5): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  309.399490][T10035] BTRFS warning (device loop5): couldn't read tree root
[  309.399506][T10035] BTRFS warning (device loop5): try to load backup roots slot 2
[  309.399784][  T180] BTRFS error (device loop5): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  309.401378][T10035] BTRFS warning (device loop5): couldn't read tree root
[  309.401397][T10035] BTRFS warning (device loop5): try to load backup roots slot 3
[  309.452496][T10037] BTRFS info (device loop2): rebuilding free space tree
[  309.663763][T10026] BTRFS error (device loop1): open_ctree failed: -4
[  309.731253][T10035] BTRFS info (device loop5): rebuilding free space tree
[  309.847455][T10037] BTRFS info (device loop2): disabling free space tree
[  309.847532][T10037] BTRFS info (device loop2): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  309.847555][T10037] BTRFS info (device loop2): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  309.911585][T10035] BTRFS info (device loop5): disabling free space tree
[  309.911659][T10035] BTRFS info (device loop5): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  309.911681][T10035] BTRFS info (device loop5): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  309.922640][T10039] loop4: detected capacity change from 0 to 32768
[  309.961518][T10039] btrfs: Deprecated parameter 'usebackuproot'
[  309.961532][T10039] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  309.977421][T10039] BTRFS info: device /dev/loop4 (7:4) using temp-fsid 47336d5b-470e-43b6-9d7e-3bc416056fd1
[  309.977489][T10039] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop4 (7:4) scanned by syz.4.243 (10039)
[  310.007586][T10037] BTRFS info (device loop2): checking UUID tree
[  310.007645][T10037] BTRFS error (device loop2): failed to check the UUID tree: -4
[  310.079815][T10035] BTRFS info (device loop5): checking UUID tree
[  310.079871][T10035] BTRFS error (device loop5): failed to check the UUID tree: -4
[  310.172098][T10039] BTRFS info (device loop4): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  310.172127][T10039] BTRFS info (device loop4): using crc32c checksum algorithm
[  310.172150][T10039] BTRFS warning (device loop4): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  310.309990][T10039] workqueue: Failed to create a rescuer kthread for wq "btrfs-endio-write": -EINTR
[  310.310335][T10039] workqueue: Failed to create a rescuer kthread for wq "btrfs-freespace-write": -EINTR
[  310.310725][T10039] workqueue: Failed to create a rescuer kthread for wq "btrfs-delayed-meta": -EINTR
[  310.311004][T10039] workqueue: Failed to create a rescuer kthread for wq "btrfs-qgroup-rescan": -EINTR
[  310.356308][T10039] BTRFS error (device loop4): open_ctree failed: -12
[  310.530610][T10057] loop3: detected capacity change from 0 to 32768
[  310.543788][T10057] btrfs: Deprecated parameter 'usebackuproot'
[  310.543809][T10057] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  310.590599][T10037] BTRFS error (device loop2): open_ctree failed: -4
[  310.599903][T10057] BTRFS info: device /dev/loop3 (7:3) using temp-fsid 1ca730fb-d9c8-42ab-af85-3de6934e7f0f
[  310.599960][T10057] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop3 (7:3) scanned by syz.3.244 (10057)
[  310.694255][T10057] BTRFS info (device loop3): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  310.694283][T10057] BTRFS info (device loop3): using crc32c checksum algorithm
[  310.698798][T10057] BTRFS warning (device loop3): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  310.791338][T10035] BTRFS error (device loop5): open_ctree failed: -4
[  310.912906][  T180] BTRFS warning (device loop3): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  310.913044][T10057] BTRFS error (device loop3): failed to load root extent
[  310.913078][T10057] BTRFS warning (device loop3): try to load backup roots slot 1
[  310.913646][  T180] BTRFS warning (device loop3): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  310.913763][T10057] BTRFS warning (device loop3): couldn't read tree root
[  310.913779][T10057] BTRFS warning (device loop3): try to load backup roots slot 2
[  310.916435][  T180] BTRFS error (device loop3): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  310.916555][T10057] BTRFS warning (device loop3): couldn't read tree root
[  310.916570][T10057] BTRFS warning (device loop3): try to load backup roots slot 3
2026/05/26 04:53:43 executed programs: 241
[  311.071855][T10057] BTRFS info (device loop3): rebuilding free space tree
[  311.605681][T10057] BTRFS info (device loop3): disabling free space tree
[  311.605756][T10057] BTRFS info (device loop3): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  311.605779][T10057] BTRFS info (device loop3): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  311.643758][T10057] BTRFS info (device loop3): checking UUID tree
[  311.643854][T10057] BTRFS error (device loop3): failed to check the UUID tree: -4
[  311.864744][T10057] BTRFS error (device loop3): open_ctree failed: -4
[  311.962064][T10105] loop1: detected capacity change from 0 to 32768
[  311.983545][T10105] btrfs: Deprecated parameter 'usebackuproot'
[  311.983565][T10105] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  311.991981][T10105] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop1 (7:1) scanned by syz.1.245 (10105)
[  312.104429][T10105] BTRFS info (device loop1): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  312.104472][T10105] BTRFS info (device loop1): using crc32c checksum algorithm
[  312.104497][T10105] BTRFS warning (device loop1): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  312.471974][T10105] BTRFS error (device loop1): failed to load root extent
[  312.472025][T10105] BTRFS warning (device loop1): try to load backup roots slot 1
[  312.473999][T10105] BTRFS warning (device loop1): couldn't read tree root
[  312.474025][T10105] BTRFS warning (device loop1): try to load backup roots slot 2
[  312.509460][ T1378] BTRFS error (device loop1): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  312.510481][T10105] BTRFS warning (device loop1): couldn't read tree root
[  312.510501][T10105] BTRFS warning (device loop1): try to load backup roots slot 3
[  312.563168][T10134] loop4: detected capacity change from 0 to 32768
[  312.575023][T10134] btrfs: Deprecated parameter 'usebackuproot'
[  312.575044][T10134] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  312.585491][T10134] BTRFS info: device /dev/loop4 (7:4) using temp-fsid 3a825281-02ec-4eae-b628-d6a656cecd6a
[  312.585548][T10134] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop4 (7:4) scanned by syz.4.246 (10134)
[  312.630852][T10134] BTRFS info (device loop4): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  312.630877][T10134] BTRFS info (device loop4): using crc32c checksum algorithm
[  312.630898][T10134] BTRFS warning (device loop4): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  312.655643][T10105] BTRFS info (device loop1): rebuilding free space tree
[  312.722643][T10139] loop5: detected capacity change from 0 to 32768
[  312.724087][T10139] btrfs: Deprecated parameter 'usebackuproot'
[  312.724105][T10139] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  312.744976][T10139] BTRFS info: device /dev/loop5 (7:5) using temp-fsid c7f2a409-7694-41e7-839c-49abbcdeecaf
[  312.745034][T10139] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop5 (7:5) scanned by syz.5.248 (10139)
[  312.777800][T10139] BTRFS info (device loop5): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  312.777829][T10139] BTRFS info (device loop5): using crc32c checksum algorithm
[  312.777855][T10139] BTRFS warning (device loop5): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  312.900903][T10105] BTRFS info (device loop1): disabling free space tree
[  312.900976][T10105] BTRFS info (device loop1): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  312.901021][T10105] BTRFS info (device loop1): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  312.935238][T10105] BTRFS info (device loop1): checking UUID tree
[  312.936506][T10105] BTRFS info (device loop1): enabling ssd optimizations
[  312.936524][T10105] BTRFS info (device loop1): disabling tree log
[  312.936538][T10105] BTRFS info (device loop1): turning on flush-on-commit
[  312.936551][T10105] BTRFS info (device loop1): turning on async discard
[  312.936564][T10105] BTRFS info (device loop1): enabling disk space caching
[  312.936578][T10105] BTRFS info (device loop1): force clearing of disk cache
[  312.936591][T10105] BTRFS info (device loop1): trying to use backup root at mount time
[  312.936607][T10105] BTRFS info (device loop1): use zstd compression, level 3
[  313.110463][ T1360] btrfs_validate_extent_buffer: 2 callbacks suppressed
[  313.110483][ T1360] BTRFS warning (device loop4): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  313.111809][T10134] BTRFS error (device loop4): failed to load root extent
[  313.111849][T10134] BTRFS warning (device loop4): try to load backup roots slot 1
[  313.112130][ T1360] BTRFS warning (device loop4): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  313.112249][T10134] BTRFS warning (device loop4): couldn't read tree root
[  313.112265][T10134] BTRFS warning (device loop4): try to load backup roots slot 2
[  313.112565][ T1360] BTRFS error (device loop4): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  313.112682][T10134] BTRFS warning (device loop4): couldn't read tree root
[  313.112697][T10134] BTRFS warning (device loop4): try to load backup roots slot 3
[  313.114731][   T13] BTRFS warning (device loop5): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  313.115454][T10139] BTRFS error (device loop5): failed to load root extent
[  313.115504][T10139] BTRFS warning (device loop5): try to load backup roots slot 1
[  313.115843][ T1360] BTRFS warning (device loop5): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  313.116343][T10139] BTRFS warning (device loop5): couldn't read tree root
[  313.116360][T10139] BTRFS warning (device loop5): try to load backup roots slot 2
[  313.116606][ T1360] BTRFS error (device loop5): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  313.116714][T10139] BTRFS warning (device loop5): couldn't read tree root
[  313.116738][T10139] BTRFS warning (device loop5): try to load backup roots slot 3
[  313.333484][T10134] BTRFS info (device loop4): rebuilding free space tree
[  313.366443][T10139] BTRFS info (device loop5): rebuilding free space tree
[  313.396969][ T5755] BTRFS info (device loop1): last unmount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  313.538771][T10144] loop3: detected capacity change from 0 to 32768
[  313.571234][T10144] btrfs: Deprecated parameter 'usebackuproot'
[  313.571256][T10144] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  313.603236][T10144] BTRFS info: device /dev/loop3 (7:3) using temp-fsid 2075fa5b-6270-4e24-b1e9-8d5c05f803be
[  313.603288][T10144] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop3 (7:3) scanned by syz.3.249 (10144)
[  313.672502][T10144] BTRFS info (device loop3): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  313.672531][T10144] BTRFS info (device loop3): using crc32c checksum algorithm
[  313.672557][T10144] BTRFS warning (device loop3): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  313.761621][T10139] BTRFS info (device loop5): disabling free space tree
[  313.761722][T10139] BTRFS info (device loop5): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  313.761745][T10139] BTRFS info (device loop5): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  313.878884][T10139] BTRFS info (device loop5): checking UUID tree
[  313.879417][T10139] BTRFS info (device loop5): enabling ssd optimizations
[  313.879437][T10139] BTRFS info (device loop5): disabling tree log
[  313.879452][T10139] BTRFS info (device loop5): turning on flush-on-commit
[  313.879465][T10139] BTRFS info (device loop5): turning on async discard
[  313.879477][T10139] BTRFS info (device loop5): enabling disk space caching
[  313.879491][T10139] BTRFS info (device loop5): force clearing of disk cache
[  313.879506][T10139] BTRFS info (device loop5): trying to use backup root at mount time
[  313.879521][T10139] BTRFS info (device loop5): use zstd compression, level 3
[  313.958622][T10134] BTRFS info (device loop4): disabling free space tree
[  313.958694][T10134] BTRFS info (device loop4): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  313.958716][T10134] BTRFS info (device loop4): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  314.016243][ T1378] BTRFS warning (device loop3): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  314.018417][T10144] BTRFS error (device loop3): failed to load root extent
[  314.071009][T10134] BTRFS info (device loop4): checking UUID tree
[  314.071084][T10134] BTRFS error (device loop4): failed to check the UUID tree: -4
[  314.084183][T10144] BTRFS warning (device loop3): try to load backup roots slot 1
[  314.089235][ T1360] BTRFS warning (device loop3): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  314.089375][T10144] BTRFS warning (device loop3): couldn't read tree root
[  314.089391][T10144] BTRFS warning (device loop3): try to load backup roots slot 2
[  314.146344][T10142] loop2: detected capacity change from 0 to 32768
[  314.151437][ T1360] BTRFS error (device loop3): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  314.151588][T10144] BTRFS warning (device loop3): couldn't read tree root
[  314.151606][T10144] BTRFS warning (device loop3): try to load backup roots slot 3
[  314.166738][T10142] btrfs: Deprecated parameter 'usebackuproot'
[  314.166757][T10142] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  314.183100][T10142] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop2 (7:2) scanned by syz.2.247 (10142)
[  314.309000][T10142] BTRFS info (device loop2): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  314.309030][T10142] BTRFS info (device loop2): using crc32c checksum algorithm
[  314.309056][T10142] BTRFS warning (device loop2): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  314.384790][T10144] BTRFS info (device loop3): rebuilding free space tree
[  314.590862][ T7677] BTRFS info (device loop5): last unmount of filesystem c7f2a409-7694-41e7-839c-49abbcdeecaf
[  314.620986][T10134] BTRFS error (device loop4): open_ctree failed: -4
[  314.656799][  T180] BTRFS warning (device loop2): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  314.657635][T10142] BTRFS error (device loop2): failed to load root extent
[  314.728301][T10142] BTRFS warning (device loop2): try to load backup roots slot 1
[  314.729202][ T1378] BTRFS warning (device loop2): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  314.730116][T10142] BTRFS warning (device loop2): couldn't read tree root
[  314.730137][T10142] BTRFS warning (device loop2): try to load backup roots slot 2
[  314.730439][ T1378] BTRFS error (device loop2): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  314.732165][T10142] BTRFS warning (device loop2): couldn't read tree root
[  314.732184][T10142] BTRFS warning (device loop2): try to load backup roots slot 3
[  314.765269][T10144] BTRFS info (device loop3): disabling free space tree
[  314.765823][T10144] BTRFS info (device loop3): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  314.765846][T10144] BTRFS info (device loop3): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  314.902782][T10144] BTRFS info (device loop3): checking UUID tree
[  314.917114][T10144] BTRFS info (device loop3): enabling ssd optimizations
[  314.917137][T10144] BTRFS info (device loop3): disabling tree log
[  314.917151][T10144] BTRFS info (device loop3): turning on flush-on-commit
[  314.917166][T10144] BTRFS info (device loop3): turning on async discard
[  314.917180][T10144] BTRFS info (device loop3): enabling disk space caching
[  314.917195][T10144] BTRFS info (device loop3): force clearing of disk cache
[  314.917210][T10144] BTRFS info (device loop3): trying to use backup root at mount time
[  314.917225][T10144] BTRFS info (device loop3): use zstd compression, level 3
[  315.188746][ T5757] BTRFS info (device loop3): last unmount of filesystem 2075fa5b-6270-4e24-b1e9-8d5c05f803be
[  315.264015][T10142] BTRFS error (device loop2): open_ctree failed: -4
[  316.084063][T10204] loop1: detected capacity change from 0 to 32768
[  316.104755][T10204] btrfs: Deprecated parameter 'usebackuproot'
[  316.104774][T10204] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  316.110088][T10204] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop1 (7:1) scanned by syz.1.250 (10204)
[  316.250167][T10204] BTRFS info (device loop1): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  316.250198][T10204] BTRFS info (device loop1): using crc32c checksum algorithm
[  316.250224][T10204] BTRFS warning (device loop1): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  316.462930][   T43] BTRFS warning (device loop1): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  316.463924][T10204] BTRFS error (device loop1): failed to load root extent
[  316.510386][T10204] BTRFS warning (device loop1): try to load backup roots slot 1
[  316.576001][   T43] BTRFS warning (device loop1): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  316.586218][T10204] BTRFS warning (device loop1): couldn't read tree root
[  316.586242][T10204] BTRFS warning (device loop1): try to load backup roots slot 2
[  316.611029][  T180] BTRFS error (device loop1): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  316.611200][T10204] BTRFS warning (device loop1): couldn't read tree root
[  316.611217][T10204] BTRFS warning (device loop1): try to load backup roots slot 3
[  316.710381][T10229] loop4: detected capacity change from 0 to 32768
[  316.713158][T10229] btrfs: Deprecated parameter 'usebackuproot'
[  316.713178][T10229] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  316.742969][T10204] BTRFS info (device loop1): rebuilding free space tree
[  316.762365][T10229] BTRFS info: device /dev/loop4 (7:4) using temp-fsid 2f8c2ff3-a344-40f0-86cd-870090336e12
[  316.762423][T10229] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop4 (7:4) scanned by syz.4.252 (10229)
[  316.859019][T10229] BTRFS info (device loop4): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  316.859049][T10229] BTRFS info (device loop4): using crc32c checksum algorithm
[  316.859077][T10229] BTRFS warning (device loop4): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
2026/05/26 04:53:49 executed programs: 248
[  317.198417][ T1290] ieee802154 phy0 wpan0: encryption failed: -22
[  317.198511][ T1290] ieee802154 phy1 wpan1: encryption failed: -22
[  317.374854][T10204] BTRFS info (device loop1): disabling free space tree
[  317.374932][T10204] BTRFS info (device loop1): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  317.374955][T10204] BTRFS info (device loop1): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  317.387301][T10229] BTRFS error (device loop4): failed to load root extent
[  317.387341][T10229] BTRFS warning (device loop4): try to load backup roots slot 1
[  317.388460][T10229] BTRFS warning (device loop4): couldn't read tree root
[  317.388477][T10229] BTRFS warning (device loop4): try to load backup roots slot 2
[  317.388751][ T1378] BTRFS error (device loop4): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  317.388862][T10229] BTRFS warning (device loop4): couldn't read tree root
[  317.388891][T10229] BTRFS warning (device loop4): try to load backup roots slot 3
[  317.449520][T10204] BTRFS info (device loop1): checking UUID tree
[  317.456726][T10229] BTRFS info (device loop4): rebuilding free space tree
[  317.464135][T10204] BTRFS info (device loop1): enabling ssd optimizations
[  317.464158][T10204] BTRFS info (device loop1): disabling tree log
[  317.464173][T10204] BTRFS info (device loop1): turning on flush-on-commit
[  317.464187][T10204] BTRFS info (device loop1): turning on async discard
[  317.464201][T10204] BTRFS info (device loop1): enabling disk space caching
[  317.464215][T10204] BTRFS info (device loop1): force clearing of disk cache
[  317.464229][T10204] BTRFS info (device loop1): trying to use backup root at mount time
[  317.464245][T10204] BTRFS info (device loop1): use zstd compression, level 3
[  317.571161][T10229] BTRFS info (device loop4): disabling free space tree
[  317.571252][T10229] BTRFS info (device loop4): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  317.571275][T10229] BTRFS info (device loop4): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  317.667462][T10229] BTRFS info (device loop4): checking UUID tree
[  317.674682][T10229] BTRFS info (device loop4): enabling ssd optimizations
[  317.674706][T10229] BTRFS info (device loop4): disabling tree log
[  317.674721][T10229] BTRFS info (device loop4): turning on flush-on-commit
[  317.674735][T10229] BTRFS info (device loop4): turning on async discard
[  317.674748][T10229] BTRFS info (device loop4): enabling disk space caching
[  317.674762][T10229] BTRFS info (device loop4): force clearing of disk cache
[  317.674777][T10229] BTRFS info (device loop4): trying to use backup root at mount time
[  317.674793][T10229] BTRFS info (device loop4): use zstd compression, level 3
[  317.821537][ T5755] BTRFS info (device loop1): last unmount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  317.838862][T10231] loop5: detected capacity change from 0 to 32768
[  317.839932][T10231] btrfs: Deprecated parameter 'usebackuproot'
[  317.839951][T10231] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  317.851595][T10231] BTRFS info: device /dev/loop5 (7:5) using temp-fsid 07768e4d-7bff-4462-a489-f9f925b5687b
[  317.851652][T10231] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop5 (7:5) scanned by syz.5.251 (10231)
[  318.050153][T10231] BTRFS info (device loop5): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  318.050183][T10231] BTRFS info (device loop5): using crc32c checksum algorithm
[  318.050222][T10231] BTRFS warning (device loop5): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  318.148096][ T5768] BTRFS info (device loop4): last unmount of filesystem 2f8c2ff3-a344-40f0-86cd-870090336e12
[  318.260785][T10233] loop2: detected capacity change from 0 to 32768
[  318.262169][T10233] btrfs: Deprecated parameter 'usebackuproot'
[  318.262186][T10233] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  318.264046][T10233] BTRFS info: device /dev/loop2 (7:2) using temp-fsid 38496425-d406-4c7d-b99b-e19c00fdca6f
[  318.264113][T10233] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop2 (7:2) scanned by syz.2.254 (10233)
[  318.324909][T10231] workqueue: Failed to create a rescuer kthread for wq "btrfs-rmw": -EINTR
[  318.327099][T10231] workqueue: Failed to create a rescuer kthread for wq "btrfs-endio-write": -EINTR
[  318.327395][T10231] workqueue: Failed to create a rescuer kthread for wq "btrfs-freespace-write": -EINTR
[  318.327671][T10231] workqueue: Failed to create a rescuer kthread for wq "btrfs-delayed-meta": -EINTR
[  318.327909][T10231] workqueue: Failed to create a rescuer kthread for wq "btrfs-qgroup-rescan": -EINTR
[  318.479623][T10259] loop3: detected capacity change from 0 to 32768
[  318.480603][T10259] btrfs: Deprecated parameter 'usebackuproot'
[  318.480619][T10259] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  318.545690][T10231] BTRFS error (device loop5): open_ctree failed: -12
[  318.556273][T10259] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop3 (7:3) scanned by syz.3.255 (10259)
[  318.559272][T10233] BTRFS error (device loop2): open_ctree failed: -4
[  318.700155][T10259] BTRFS info (device loop3): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  318.700185][T10259] BTRFS info (device loop3): using crc32c checksum algorithm
[  318.700220][T10259] BTRFS warning (device loop3): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  318.970448][ T1360] btrfs_validate_extent_buffer: 2 callbacks suppressed
[  318.970470][ T1360] BTRFS warning (device loop3): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  318.972061][T10259] BTRFS error (device loop3): failed to load root extent
[  318.972100][T10259] BTRFS warning (device loop3): try to load backup roots slot 1
[  318.973285][ T1360] BTRFS warning (device loop3): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  318.978393][T10259] BTRFS warning (device loop3): couldn't read tree root
[  318.978413][T10259] BTRFS warning (device loop3): try to load backup roots slot 2
[  318.978706][   T43] BTRFS error (device loop3): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  318.981303][T10259] BTRFS warning (device loop3): couldn't read tree root
[  318.981322][T10259] BTRFS warning (device loop3): try to load backup roots slot 3
[  319.101952][T10259] BTRFS info (device loop3): rebuilding free space tree
[  319.329062][T10259] BTRFS info (device loop3): disabling free space tree
[  319.329137][T10259] BTRFS info (device loop3): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  319.329168][T10259] BTRFS info (device loop3): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  319.469234][T10259] BTRFS info (device loop3): checking UUID tree
[  319.490272][T10259] BTRFS info (device loop3): enabling ssd optimizations
[  319.490295][T10259] BTRFS info (device loop3): disabling tree log
[  319.490309][T10259] BTRFS info (device loop3): turning on flush-on-commit
[  319.490324][T10259] BTRFS info (device loop3): turning on async discard
[  319.490338][T10259] BTRFS info (device loop3): enabling disk space caching
[  319.490352][T10259] BTRFS info (device loop3): force clearing of disk cache
[  319.490367][T10259] BTRFS info (device loop3): trying to use backup root at mount time
[  319.490390][T10259] BTRFS info (device loop3): use zstd compression, level 3
[  319.924994][ T5757] BTRFS info (device loop3): last unmount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  320.160783][T10309] loop1: detected capacity change from 0 to 32768
[  320.161848][T10309] btrfs: Deprecated parameter 'usebackuproot'
[  320.161866][T10309] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  320.303915][T10309] BTRFS info: device /dev/loop1 (7:1) using temp-fsid 05228ce8-9786-4198-b99f-4a1c90570d5a
[  320.303978][T10309] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop1 (7:1) scanned by syz.1.256 (10309)
[  320.344644][T10309] BTRFS info (device loop1): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  320.344675][T10309] BTRFS info (device loop1): using crc32c checksum algorithm
[  320.344702][T10309] BTRFS warning (device loop1): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  320.734586][  T180] BTRFS warning (device loop1): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  320.750137][T10289] loop5: detected capacity change from 0 to 32768
[  320.751353][T10289] btrfs: Deprecated parameter 'usebackuproot'
[  320.751370][T10289] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  320.763581][T10296] loop2: detected capacity change from 0 to 32768
[  320.764808][T10289] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop5 (7:5) scanned by syz.5.258 (10289)
[  320.798023][T10296] btrfs: Deprecated parameter 'usebackuproot'
[  320.798043][T10296] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  320.805541][T10296] BTRFS info: device /dev/loop2 (7:2) using temp-fsid b7e51d51-e77d-48f4-9a2d-45e015a97cc6
[  320.805599][T10296] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop2 (7:2) scanned by syz.2.259 (10296)
[  320.831041][T10309] BTRFS error (device loop1): failed to load root extent
[  320.831081][T10309] BTRFS warning (device loop1): try to load backup roots slot 1
[  320.831434][ T1326] BTRFS warning (device loop1): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  320.832871][T10309] BTRFS warning (device loop1): couldn't read tree root
[  320.832891][T10309] BTRFS warning (device loop1): try to load backup roots slot 2
[  320.835079][ T1326] BTRFS error (device loop1): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  320.835212][T10309] BTRFS warning (device loop1): couldn't read tree root
[  320.835228][T10309] BTRFS warning (device loop1): try to load backup roots slot 3
[  320.913606][T10289] BTRFS info (device loop5): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  320.913637][T10289] BTRFS info (device loop5): using crc32c checksum algorithm
[  320.913664][T10289] BTRFS warning (device loop5): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  320.920215][T10296] BTRFS info (device loop2): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  320.920242][T10296] BTRFS info (device loop2): using crc32c checksum algorithm
[  320.920268][T10296] BTRFS warning (device loop2): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  320.990828][T10309] BTRFS info (device loop1): rebuilding free space tree
[  321.070975][T10308] loop4: detected capacity change from 0 to 32768
[  321.090764][T10308] btrfs: Deprecated parameter 'usebackuproot'
[  321.090786][T10308] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  321.130856][T10308] BTRFS info: device /dev/loop4 (7:4) using temp-fsid b1cfc87e-2367-4d64-984c-d5b6617ef607
[  321.130913][T10308] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop4 (7:4) scanned by syz.4.257 (10308)
[  321.183715][T10308] BTRFS info (device loop4): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  321.183744][T10308] BTRFS info (device loop4): using crc32c checksum algorithm
[  321.183771][T10308] BTRFS warning (device loop4): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  321.405069][  T180] BTRFS warning (device loop5): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  321.405176][  T180] BTRFS warning (device loop2): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  321.405319][T10289] BTRFS error (device loop5): failed to load root extent
[  321.405355][T10289] BTRFS warning (device loop5): try to load backup roots slot 1
[  321.405493][T10296] BTRFS error (device loop2): failed to load root extent
[  321.405525][T10296] BTRFS warning (device loop2): try to load backup roots slot 1
[  321.414280][ T1326] BTRFS warning (device loop5): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  321.428573][T10309] BTRFS info (device loop1): disabling free space tree
[  321.428655][T10309] BTRFS info (device loop1): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  321.428679][T10309] BTRFS info (device loop1): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  321.438298][   T13] BTRFS warning (device loop2): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  321.438438][T10296] BTRFS warning (device loop2): couldn't read tree root
[  321.438455][T10296] BTRFS warning (device loop2): try to load backup roots slot 2
[  321.441290][   T13] BTRFS error (device loop2): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  321.441414][T10296] BTRFS warning (device loop2): couldn't read tree root
[  321.441431][T10296] BTRFS warning (device loop2): try to load backup roots slot 3
[  321.483230][T10309] BTRFS info (device loop1): checking UUID tree
[  321.518181][T10309] BTRFS info (device loop1): enabling ssd optimizations
[  321.518204][T10309] BTRFS info (device loop1): disabling tree log
[  321.518219][T10309] BTRFS info (device loop1): turning on flush-on-commit
[  321.518233][T10309] BTRFS info (device loop1): turning on async discard
[  321.518247][T10309] BTRFS info (device loop1): enabling disk space caching
[  321.518261][T10309] BTRFS info (device loop1): force clearing of disk cache
[  321.518275][T10309] BTRFS info (device loop1): trying to use backup root at mount time
[  321.518291][T10309] BTRFS info (device loop1): use zstd compression, level 3
[  321.523500][T10296] BTRFS info (device loop2): rebuilding free space tree
[  321.533069][T10289] BTRFS warning (device loop5): couldn't read tree root
[  321.533090][T10289] BTRFS warning (device loop5): try to load backup roots slot 2
[  321.536602][   T43] BTRFS error (device loop5): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  321.536742][T10289] BTRFS warning (device loop5): couldn't read tree root
[  321.536759][T10289] BTRFS warning (device loop5): try to load backup roots slot 3
[  321.676718][T10289] BTRFS info (device loop5): rebuilding free space tree
[  321.751815][ T1360] BTRFS warning (device loop4): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  321.753264][T10308] BTRFS error (device loop4): failed to load root extent
[  321.753305][T10308] BTRFS warning (device loop4): try to load backup roots slot 1
[  321.753678][ T1360] BTRFS warning (device loop4): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  321.800107][T10308] BTRFS warning (device loop4): couldn't read tree root
[  321.800130][T10308] BTRFS warning (device loop4): try to load backup roots slot 2
[  321.800588][ T1360] BTRFS error (device loop4): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  321.805978][T10308] BTRFS warning (device loop4): couldn't read tree root
[  321.805999][T10308] BTRFS warning (device loop4): try to load backup roots slot 3
[  321.947625][T10289] BTRFS info (device loop5): disabling free space tree
[  321.947711][T10289] BTRFS info (device loop5): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  321.948641][T10308] BTRFS info (device loop4): rebuilding free space tree
[  321.956799][T10289] BTRFS info (device loop5): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  322.052127][T10289] BTRFS info (device loop5): checking UUID tree
[  322.052215][T10289] BTRFS error (device loop5): failed to check the UUID tree: -4
[  322.284812][T10296] BTRFS info (device loop2): disabling free space tree
[  322.284888][T10296] BTRFS info (device loop2): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  322.284910][T10296] BTRFS info (device loop2): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  322.326162][T10308] BTRFS info (device loop4): disabling free space tree
[  322.326237][T10308] BTRFS info (device loop4): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  322.326259][T10308] BTRFS info (device loop4): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  322.340292][T10296] BTRFS info (device loop2): checking UUID tree
[  322.340365][T10296] BTRFS error (device loop2): failed to check the UUID tree: -4
[  322.528745][T10308] BTRFS info (device loop4): checking UUID tree
[  322.528814][T10308] BTRFS error (device loop4): failed to check the UUID tree: -4
2026/05/26 04:53:55 executed programs: 254
[  322.701017][ T5755] BTRFS info (device loop1): last unmount of filesystem 05228ce8-9786-4198-b99f-4a1c90570d5a
[  322.837665][T10325] loop3: detected capacity change from 0 to 32768
[  322.838776][T10325] btrfs: Deprecated parameter 'usebackuproot'
[  322.838795][T10325] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  322.839568][T10325] BTRFS info: device /dev/loop3 (7:3) using temp-fsid 59032853-1097-4de5-ba6f-d42096117fae
[  322.839623][T10325] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop3 (7:3) scanned by syz.3.260 (10325)
[  322.986567][T10289] BTRFS error (device loop5): open_ctree failed: -4
[  323.003251][T10296] BTRFS error (device loop2): open_ctree failed: -4
[  323.006177][T10325] BTRFS info (device loop3): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  323.006211][T10325] BTRFS info (device loop3): using crc32c checksum algorithm
[  323.006243][T10325] BTRFS warning (device loop3): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  323.289483][T10308] BTRFS error (device loop4): open_ctree failed: -4
[  323.337229][T10325] BTRFS error (device loop3): failed to load root extent
[  323.337271][T10325] BTRFS warning (device loop3): try to load backup roots slot 1
[  323.356237][T10325] BTRFS warning (device loop3): couldn't read tree root
[  323.356260][T10325] BTRFS warning (device loop3): try to load backup roots slot 2
[  323.358469][   T43] BTRFS error (device loop3): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  323.359536][T10325] BTRFS warning (device loop3): couldn't read tree root
[  323.359553][T10325] BTRFS warning (device loop3): try to load backup roots slot 3
[  323.912724][T10325] BTRFS error (device loop3): open_ctree failed: -4
[  324.375091][   T60] Bluetooth: hci5: command 0x0406 tx timeout
[  324.702835][T10395] loop5: detected capacity change from 0 to 32768
[  324.725442][T10395] btrfs: Deprecated parameter 'usebackuproot'
[  324.725463][T10395] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  324.806349][T10395] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop5 (7:5) scanned by syz.5.262 (10395)
[  324.909930][T10395] BTRFS info (device loop5): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  324.909958][T10395] BTRFS info (device loop5): using crc32c checksum algorithm
[  324.909980][T10395] BTRFS warning (device loop5): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  325.257998][   T13] btrfs_validate_extent_buffer: 2 callbacks suppressed
[  325.258021][   T13] BTRFS warning (device loop5): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  325.259787][T10395] BTRFS error (device loop5): failed to load root extent
[  325.259823][T10395] BTRFS warning (device loop5): try to load backup roots slot 1
[  325.298139][  T107] BTRFS warning (device loop5): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  325.301521][T10395] BTRFS warning (device loop5): couldn't read tree root
[  325.301543][T10395] BTRFS warning (device loop5): try to load backup roots slot 2
[  325.302333][ T1326] BTRFS error (device loop5): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  325.302461][T10395] BTRFS warning (device loop5): couldn't read tree root
[  325.302478][T10395] BTRFS warning (device loop5): try to load backup roots slot 3
[  325.351351][T10397] loop2: detected capacity change from 0 to 32768
[  325.359739][T10397] btrfs: Deprecated parameter 'usebackuproot'
[  325.359758][T10397] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  325.384477][T10397] BTRFS info: device /dev/loop2 (7:2) using temp-fsid 2ebbd62c-6cf6-45e4-9997-aa22ab8e9057
[  325.384539][T10397] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop2 (7:2) scanned by syz.2.263 (10397)
[  325.434619][T10395] BTRFS info (device loop5): rebuilding free space tree
[  325.536175][T10397] BTRFS info (device loop2): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  325.536205][T10397] BTRFS info (device loop2): using crc32c checksum algorithm
[  325.536231][T10397] BTRFS warning (device loop2): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  325.719463][ T1326] BTRFS warning (device loop2): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  325.719594][T10397] BTRFS error (device loop2): failed to load root extent
[  325.719631][T10397] BTRFS warning (device loop2): try to load backup roots slot 1
[  325.719904][ T1326] BTRFS warning (device loop2): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  325.720689][T10397] BTRFS warning (device loop2): couldn't read tree root
[  325.720708][T10397] BTRFS warning (device loop2): try to load backup roots slot 2
[  325.720986][   T43] BTRFS error (device loop2): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  325.722657][T10397] BTRFS warning (device loop2): couldn't read tree root
[  325.722674][T10397] BTRFS warning (device loop2): try to load backup roots slot 3
[  325.784119][T10402] loop4: detected capacity change from 0 to 32768
[  325.801504][T10402] btrfs: Deprecated parameter 'usebackuproot'
[  325.801522][T10402] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  325.807564][T10402] BTRFS info: device /dev/loop4 (7:4) using temp-fsid 518f0538-5ca0-494d-9624-01269e70d124
[  325.807617][T10402] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop4 (7:4) scanned by syz.4.264 (10402)
[  325.862013][T10402] BTRFS info (device loop4): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  325.862043][T10402] BTRFS info (device loop4): using crc32c checksum algorithm
[  325.862070][T10402] BTRFS warning (device loop4): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  325.878395][T10397] BTRFS info (device loop2): rebuilding free space tree
[  325.895907][T10395] BTRFS info (device loop5): disabling free space tree
[  325.895987][T10395] BTRFS info (device loop5): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  325.896005][T10395] BTRFS info (device loop5): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  325.964481][T10395] BTRFS info (device loop5): checking UUID tree
[  325.970946][T10395] BTRFS info (device loop5): enabling ssd optimizations
[  325.970969][T10395] BTRFS info (device loop5): disabling tree log
[  325.970984][T10395] BTRFS info (device loop5): turning on flush-on-commit
[  325.970998][T10395] BTRFS info (device loop5): turning on async discard
[  325.971012][T10395] BTRFS info (device loop5): enabling disk space caching
[  325.971027][T10395] BTRFS info (device loop5): force clearing of disk cache
[  325.971042][T10395] BTRFS info (device loop5): trying to use backup root at mount time
[  325.971057][T10395] BTRFS info (device loop5): use zstd compression, level 3
[  326.074255][  T107] BTRFS warning (device loop4): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  326.082428][T10402] BTRFS error (device loop4): failed to load root extent
[  326.109900][T10402] BTRFS warning (device loop4): try to load backup roots slot 1
[  326.122335][   T56] BTRFS warning (device loop4): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  326.122480][T10402] BTRFS warning (device loop4): couldn't read tree root
[  326.122498][T10402] BTRFS warning (device loop4): try to load backup roots slot 2
[  326.127233][  T107] BTRFS error (device loop4): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  326.127376][T10402] BTRFS warning (device loop4): couldn't read tree root
[  326.127394][T10402] BTRFS warning (device loop4): try to load backup roots slot 3
[  326.265182][T10406] loop3: detected capacity change from 0 to 32768
[  326.266322][T10406] btrfs: Deprecated parameter 'usebackuproot'
[  326.266339][T10406] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  326.294382][T10406] BTRFS info: device /dev/loop3 (7:3) using temp-fsid 77fb3723-4af8-417f-922d-645c4d22722f
[  326.294453][T10406] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop3 (7:3) scanned by syz.3.265 (10406)
[  326.320816][T10397] BTRFS info (device loop2): disabling free space tree
[  326.320888][T10397] BTRFS info (device loop2): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  326.320911][T10397] BTRFS info (device loop2): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  326.400787][T10406] BTRFS info (device loop3): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  326.400818][T10406] BTRFS info (device loop3): using crc32c checksum algorithm
[  326.400845][T10406] BTRFS warning (device loop3): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  326.412782][T10402] BTRFS info (device loop4): rebuilding free space tree
[  326.447436][T10397] BTRFS info (device loop2): checking UUID tree
[  326.447508][T10397] BTRFS error (device loop2): failed to check the UUID tree: -4
[  326.700935][T10402] BTRFS info (device loop4): disabling free space tree
[  326.701013][T10402] BTRFS info (device loop4): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  326.701044][T10402] BTRFS info (device loop4): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  326.743890][T10408] loop1: detected capacity change from 0 to 32768
[  326.772016][  T180] BTRFS warning (device loop3): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  326.772148][T10406] BTRFS error (device loop3): failed to load root extent
[  326.772186][T10406] BTRFS warning (device loop3): try to load backup roots slot 1
[  326.773432][T10408] btrfs: Deprecated parameter 'usebackuproot'
[  326.773450][T10408] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead
[  326.780107][   T56] BTRFS warning (device loop3): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  326.825842][T10402] BTRFS info (device loop4): checking UUID tree
[  326.825912][T10402] BTRFS error (device loop4): failed to check the UUID tree: -4
[  326.835843][T10408] BTRFS info: device /dev/loop1 (7:1) using temp-fsid fdee6240-a049-4b69-b866-25dfa1be755c
[  326.835900][T10408] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop1 (7:1) scanned by syz.1.261 (10408)
[  326.842734][T10397] BTRFS error (device loop2): open_ctree failed: -4
[  326.884265][T10408] BTRFS info (device loop1): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  326.884598][T10408] BTRFS info (device loop1): using crc32c checksum algorithm
[  326.884631][T10408] BTRFS warning (device loop1): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[  326.989871][T10406] BTRFS warning (device loop3): couldn't read tree root
[  326.989895][T10406] BTRFS warning (device loop3): try to load backup roots slot 2
[  327.003352][ T1378] BTRFS error (device loop3): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  327.004507][T10406] BTRFS warning (device loop3): couldn't read tree root
[  327.004528][T10406] BTRFS warning (device loop3): try to load backup roots slot 3
[  327.145795][   T56] BTRFS warning (device loop1): checksum verify failed on logical 5337088 mirror 1 wanted 0xe63dbdda found 0xc926492d level 0
[  327.146116][T10408] BTRFS error (device loop1): failed to load root extent
[  327.146154][T10408] BTRFS warning (device loop1): try to load backup roots slot 1
[  327.146441][  T107] BTRFS warning (device loop1): checksum verify failed on logical 5324800 mirror 1 wanted 0x9f73850b found 0x80379423 level 0
[  327.146575][T10408] BTRFS warning (device loop1): couldn't read tree root
[  327.146591][T10408] BTRFS warning (device loop1): try to load backup roots slot 2
[  327.146863][  T107] BTRFS error (device loop1): level verify failed on logical 5255168 mirror 1 wanted 0 found 1
[  327.148433][T10408] BTRFS warning (device loop1): couldn't read tree root
[  327.148459][T10408] BTRFS warning (device loop1): try to load backup roots slot 3
[  327.208701][T10408] BTRFS info (device loop1): rebuilding free space tree
[  327.246941][T10402] BTRFS error (device loop4): open_ctree failed: -4
[  327.404557][T10406] BTRFS error (device loop3): open_ctree failed: -4
[  327.492926][ T7677] BTRFS info (device loop5): last unmount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
[  327.555262][T10408] BTRFS info (device loop1): disabling free space tree
[  327.555349][T10408] BTRFS info (device loop1): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  327.555372][T10408] BTRFS info (device loop1): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  327.687468][T10408] BTRFS info (device loop1): checking UUID tree
[  327.687541][T10408] BTRFS error (device loop1): failed to check the UUID tree: -4
2026/05/26 04:54:00 executed programs: 262
[  328.175915][T10408] BTRFS error (device loop1): open_ctree failed: -4
[  328.694581][   T38] INFO: task kworker/u8:11:1340 blocked for more than 143 seconds.
[  328.694614][   T38]       Not tainted syzkaller #0
[  328.694623][   T38] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  328.694633][   T38] task:kworker/u8:11   state:D stack:21600 pid:1340  tgid:1340  ppid:2      task_flags:0x4208060 flags:0x00080000
[  328.694685][   T38] Workqueue: writeback wb_workfn (flush-btrfs-79)
[  328.694725][   T38] Call Trace:
[  328.694735][   T38]  <TASK>
[  328.694747][   T38]  __schedu[  328.694747][   T38]  __schedule+0x16f9/0x5500
[  328.694799][   T38]  ? __blk_flush_plug+0x416/0x4d0
[  328.694822][   T38]  ? __pfx___schedule+0x10/0x10
[  328.694855][   T38]  ? schedule+0x90/0x360
[  328.694880][   T38]  schedule+0x164/0x360
[  328.694905][   T38]  btrfs_lock_extent_bits+0x59c/0x700
[  328.694934][   T38]  ? __pfx_btrfs_lock_extent_bits+0x10/0x10
[  328.694952][   T38]  ? __pfx_autoremove_wake_function+0x10/0x10
[  328.694980][   T38]  ? wait_subpage_spinlock+0x2c8/0x3a0
[  328.695008][   T38]  btrfs_invalidate_folio+0x440/0xc00
[  328.695058][   T38]  ? __pfx_btrfs_invalidate_folio+0x10/0x10
[  328.695084][   T38]  ? folio_clear_dirty_for_io+0x1d4/0x700
[  328.695106][   T38]  ? folio_clear_dirty_for_io+0x56a/0x700
[  328.695125][   T38]  ? folio_clear_dirty_for_io+0x1d4/0x700
[  328.695143][   T38]  ? folio_invalidate+0x89/0xc0
[  328.695163][   T38]  btrfs_writepages+0x12f3/0x2410
[  328.695210][   T38]  ? __pfx_btrfs_writepages+0x10/0x10
[  328.695277][   T38]  ? __pfx_btrfs_writepages+0x10/0x10
[  328.695302][   T38]  do_writepages+0x32e/0x550
[  328.695322][   T38]  ? rt_mutex_slowunlock+0x4a7/0x8b0
[  328.695344][   T38]  ? reacquire_held_locks+0x104/0x190
[  328.695368][   T38]  ? rt_spin_lock+0x1e0/0x400
[  328.695397][   T38]  __writeback_single_inode+0x133/0x10e0
[  328.695419][   T38]  ? rt_spin_unlock+0x160/0x200
[  328.695443][   T38]  writeback_sb_inodes+0x97f/0x1980
[  328.695488][   T38]  ? __pfx_writeback_sb_inodes+0x10/0x10
[  328.695544][   T38]  ? rcu_is_watching+0x15/0xb0
[  328.695584][   T38]  wb_writeback+0x445/0xb00
[  328.695607][   T38]  ? queue_io+0x251/0x440
[  328.695632][   T38]  ? __pfx_wb_writeback+0x10/0x10
[  328.695666][   T38]  wb_workfn+0x3fd/0xf20
[  328.695688][   T38]  ? look_up_lock_class+0x57/0x110
[  328.695723][   T38]  ? __pfx_wb_workfn+0x10/0x10
[  328.695749][   T38]  ? do_raw_spin_lock+0x12b/0x2f0
[  328.695772][   T38]  ? __pfx_do_raw_spin_lock+0x10/0x10
[  328.695794][   T38]  ? process_one_work+0x8be/0x1630
[  328.695820][   T38]  ? process_one_work+0x8be/0x1630
[  328.695857][   T38]  ? process_one_work+0x8be/0x1630
[  328.695879][   T38]  process_one_work+0x98b/0x1630
[  328.695923][   T38]  ? __pfx_process_one_work+0x10/0x10
[  328.695946][   T38]  ? do_raw_spin_lock+0x12b/0x2f0
[  328.696004][   T38]  worker_thread+0xb49/0x1140
[  328.696043][   T38]  kthread+0x388/0x470
[  328.696064][   T38]  ? __pfx_worker_thread+0x10/0x10
[  328.696081][   T38]  ? __pfx_kthread+0x10/0x10
[  328.696103][   T38]  ret_from_fork+0x514/0xb70
[  328.696129][   T38]  ? __pfx_ret_from_fork+0x10/0x10
[  328.696151][   T38]  ? __switch_to+0xc79/0x1410
[  328.696173][   T38]  ? __pfx_kthread+0x10/0x10
[  328.696195][   T38]  ret_from_fork_asm+0x1a/0x30
[  328.696233][   T38]  </TASK>
[  328.696457][   T38] INFO: task syz.0.99:7361 blocked for more than 143 seconds.
[  328.696473][   T38]       Not tainted syzkaller #0
[  328.696482][   T38] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  328.696494][   T38] task:syz.0.99        state:D stack:22464 pid:7361  tgid:7359  ppid:5753   task_flags:0x400140 flags:0x00080002
[  328.696542][   T38] Call Trace:
[  328.696549][   T38]  <TASK>
[  328.696562][   T38]  __schedule+0x16f9/0x5500
[  328.696612][   T38]  ? _raw_spin_unlock_irqrestore+0x4c/0x80
[  328.696634][   T38]  ? rt_spin_lock+0x1e0/0x400
[  328.696658][   T38]  ? __pfx___schedule+0x10/0x10
[  328.696691][   T38]  ? schedule+0x90/0x360
[  328.696719][   T38]  schedule+0x164/0x360
[  328.696746][   T38]  wb_wait_for_completion+0x3e8/0x790
[  328.696779][   T38]  ? __pfx_wb_wait_for_completion+0x10/0x10
[  328.696802][   T38]  ? __pfx_autoremove_wake_function+0x10/0x10
[  328.696837][   T38]  __writeback_inodes_sb_nr+0x24c/0x2d0
[  328.696871][   T38]  ? __pfx___writeback_inodes_sb_nr+0x10/0x10
[  328.696894][   T38]  ? try_to_writeback_inodes_sb+0x22/0xc0
[  328.696925][   T38]  ? seqcount_lockdep_reader_access+0xa9/0x100
[  328.696948][   T38]  ? lockdep_hardirqs_on+0x7a/0x110
[  328.696965][   T38]  ? get_nr_dirty_inodes+0x1c4/0x210
[  328.696995][   T38]  try_to_writeback_inodes_sb+0x9a/0xc0
[  328.697021][   T38]  ? btrfs_commit_transaction+0x17f/0x2fc0
[  328.697045][   T38]  btrfs_commit_transaction+0x813/0x2fc0
[  328.697070][   T38]  ? btrfs_commit_transaction+0x17f/0x2fc0
[  328.697110][   T38]  ? __pfx_btrfs_commit_transaction+0x10/0x10
[  328.697135][   T38]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  328.697154][   T38]  ? lockdep_hardirqs_on+0x7a/0x110
[  328.697172][   T38]  ? _raw_spin_unlock_irqrestore+0x4c/0x80
[  328.697191][   T38]  ? rt_mutex_slowunlock+0x4a7/0x8b0
[  328.697217][   T38]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  328.697241][   T38]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  328.697260][   T38]  ? lockdep_hardirqs_on+0x7a/0x110
[  328.697278][   T38]  ? _raw_spin_unlock_irqrestore+0x4c/0x80
[  328.697300][   T38]  btrfs_sync_file+0xdf4/0x1230
[  328.697334][   T38]  ? __pfx_btrfs_sync_file+0x10/0x10
[  328.697365][   T38]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  328.697389][   T38]  ? reacquire_held_locks+0x104/0x190
[  328.697413][   T38]  ? rt_spin_lock+0x1e0/0x400
[  328.697448][   T38]  ? vfs_fsync_range+0x143/0x150
[  328.697475][   T38]  btrfs_do_write_iter+0x6a9/0x840
[  328.697499][   T38]  ? vfs_write+0x22d/0xba0
[  328.697529][   T38]  ? __pfx_btrfs_do_write_iter+0x10/0x10
[  328.697580][   T38]  vfs_write+0x629/0xba0
[  328.697757][   T38]  ? __pfx_vfs_write+0x10/0x10
[  328.697783][   T38]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  328.697802][   T38]  ? lockdep_hardirqs_on+0x7a/0x110
[  328.697822][   T38]  ? mutex_lock_nested+0x152/0x1d0
[  328.697842][   T38]  ? fdget_pos+0x252/0x320
[  328.697882][   T38]  ksys_write+0x156/0x270
[  328.697907][   T38]  ? __pfx_ksys_write+0x10/0x10
[  328.697937][   T38]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  328.700232][   T38]  do_syscall_64+0x15f/0x560
[  328.700255][   T38]  ? trace_irq_disable+0x3b/0x140
[  328.700277][   T38]  ? clear_bhb_loop+0x40/0x90
[  328.700315][   T38]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  328.700334][   T38] RIP: 0033:0x7f5caa0cce59
[  328.700360][   T38] RSP: 002b:00007f5ca972e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  328.700380][   T38] RAX: ffffffffffffffda RBX: 00007f5caa345fa0 RCX: 00007f5caa0cce59
[  328.700395][   T38] RDX: 000000000000029f RSI: 0000200000000200 RDI: 0000000000000004
[  328.700407][   T38] RBP: 00007f5caa162d6f R08: 0000000000000000 R09: 0000000000000000
[  328.700419][   T38] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[  328.700431][   T38] R13: 00007f5caa346038 R14: 00007f5caa345fa0 R15: 00007ffe2c98e8b8
[  328.700462][   T38]  </TASK>
[  328.700470][   T38] INFO: task syz.0.99:7438 blocked for more than 143 seconds.
[  328.700485][   T38]       Not tainted syzkaller #0
[  328.700494][   T38] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  328.700503][   T38] task:syz.0.99        state:D stack:23704 pid:7438  tgid:7359  ppid:5753   task_flags:0x400140 flags:0x00080002
[  328.700551][   T38] Call Trace:
[  328.700558][   T38]  <TASK>
[  328.700569][   T38]  __schedule+0x16f9/0x5500
[  328.700620][   T38]  ? _raw_spin_unlock_irqrestore+0x4c/0x80
[  328.700642][   T38]  ? rt_spin_lock+0x1e0/0x400
[  328.700667][   T38]  ? __pfx___schedule+0x10/0x10
[  328.700701][   T38]  ? schedule+0x90/0x360
[  328.700729][   T38]  schedule+0x164/0x360
[  328.700757][   T38]  wait_current_trans+0x39f/0x590
[  328.700786][   T38]  ? __pfx_wait_current_trans+0x10/0x10
[  328.700807][   T38]  ? btrfs_clone+0x1316/0x2540
[  328.700824][   T38]  ? __pfx_autoremove_wake_function+0x10/0x10
[  328.700857][   T38]  start_transaction+0xbd8/0x1820
[  328.700879][   T38]  ? start_transaction+0x800/0x1820
[  328.700909][   T38]  btrfs_clone+0x1316/0x2540
[  328.700960][   T38]  ? __pfx_btrfs_clone+0x10/0x10
[  328.700977][   T38]  ? btrfs_free_extent_state+0x11b/0x2e0
[  328.701005][   T38]  ? set_extent_bit+0x1385/0x1cc0
[  328.701037][   T38]  ? _raw_spin_unlock_irqrestore+0x4c/0x80
[  328.701064][   T38]  ? btrfs_lock_extent_bits+0xd4/0x700
[  328.701092][   T38]  ? __pfx_btrfs_lock_extent_bits+0x10/0x10
[  328.701111][   T38]  ? btrfs_lookup_first_ordered_extent+0x47d/0x620
[  328.701141][   T38]  ? btrfs_wait_ordered_range+0x23f/0x260
[  328.701169][   T38]  btrfs_clone_files+0x271/0x3f0
[  328.701194][   T38]  ? __pfx_btrfs_clone_files+0x10/0x10
[  328.701216][   T38]  ? generic_remap_file_range_prep+0x3e/0x60
[  328.701246][   T38]  btrfs_remap_file_range+0x76b/0x1320
[  328.701282][   T38]  ? __pfx_btrfs_remap_file_range+0x10/0x10
[  328.701310][   T38]  ? do_vfs_ioctl+0xe15/0x1540
[  328.701346][   T38]  vfs_clone_file_range+0x435/0x7b0
[  328.701380][   T38]  do_vfs_ioctl+0xe15/0x1540
[  328.701406][   T38]  ? __pfx_do_vfs_ioctl+0x10/0x10
[  328.701432][   T38]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  328.701457][   T38]  ? rt_spin_lock+0x1e0/0x400
[  328.701499][   T38]  ? __fget_files+0x2a/0x420
[  328.701521][   T38]  ? __fget_files+0x2a/0x420
[  328.701538][   T38]  ? __fget_files+0x3a6/0x420
[  328.701556][   T38]  ? __fget_files+0x2a/0x420
[  328.701584][   T38]  ? bpf_lsm_file_ioctl+0x9/0x20
[  328.701612][   T38]  __se_sys_ioctl+0x82/0x170
[  328.701634][   T38]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  328.701654][   T38]  do_syscall_64+0x15f/0x560
[  328.712928][   T38]  ? trace_irq_disable+0x3b/0x140
[  328.712957][   T38]  ? clear_bhb_loop+0x40/0x90
[  328.712980][   T38]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  328.712999][   T38] RIP: 0033:0x7f5caa0cce59
[  328.713015][   T38] RSP: 002b:00007f5ca970d028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  328.713034][   T38] RAX: ffffffffffffffda RBX: 00007f5caa346090 RCX: 00007f5caa0cce59
[  328.713048][   T38] RDX: 00002000000000c0 RSI: 000000004020940d RDI: 0000000000000004
[  328.713060][   T38] RBP: 00007f5caa162d6f R08: 0000000000000000 R09: 0000000000000000
[  328.713072][   T38] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[  328.713084][   T38] R13: 00007f5caa346128 R14: 00007f5caa346090 R15: 00007ffe2c98e8b8
[  328.713113][   T38]  </TASK>
[  328.713147][   T38] 
[  328.713147][   T38] Showing all locks held in the system:
[  328.713158][   T38] 4 locks held by pr/legacy/17:
[  328.713168][   T38]  #0: ffffffff8dfbce40 (console_lock){+.+.}-{0:0}, at: legacy_kthread_func+0x1a3/0x250
[  328.713214][   T38]  #1: ffffffff8dea4738 (console_srcu){....}-{0:0}, at: console_flush_one_record+0xfa/0xb90
[  328.713258][   T38]  #2: ffffffff99ba1f78 (&port_lock_key){+.+.}-{3:3}, at: serial8250_console_write+0x179/0x1b90
[  328.713301][   T38]  #3: ffffffff8dfcabc0 (rcu_read_lock){....}-{1:3}, at: rt_spin_lock+0x1e0/0x400
[  328.713348][   T38] 1 lock held by khungtaskd/38:
[  328.713358][   T38]  #0: ffffffff8dfcabc0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
[  328.713420][   T38] 2 locks held by kworker/u8:11/1340:
[  328.713430][   T38]  #0: ffff88801e283938 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x897/0x1630
[  328.713479][   T38]  #1: ffffc900060d7c40 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x8be/0x1630
[  328.713537][   T38] 1 lock held by syslogd/4961:
[  328.713547][   T38]  #0: ffff8880336c1518 (&si->socket.wq.wait){+.+.}-{3:3}, at: finish_wait+0xbe/0x1e0
[  328.713595][   T38] 2 locks held by klogd/4968:
[  328.713604][   T38]  #0: ffffffff8dfcabc0 (rcu_read_lock){....}-{1:3}, at: sock_def_readable+0xae/0x550
[  328.713648][   T38]  #1: ffffffff8dfcabc0 (rcu_read_lock){....}-{1:3}, at: rt_spin_lock+0x1e0/0x400
[  328.713693][   T38] 2 locks held by getty/5362:
[  328.713703][   T38]  #0: ffff8880364630a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
[  328.713749][   T38]  #1: ffffc90003cc62e0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x462/0x13a0
[  328.713795][   T38] 1 lock held by udevd/5669:
[  328.713805][   T38]  #0: ffff88805ba03ea8 (&sb->s_type->i_lock_key){+.+.}-{3:3}, at: filemap_remove_folio+0xe4/0x3b0
[  328.713853][   T38] 3 locks held by udevd/6046:
[  328.713863][   T38]  #0: ffff88802a362fb8 (&sb->s_type->i_lock_key){+.+.}-{3:3}, at: filemap_remove_folio+0xe4/0x3b0
[  328.713904][   T38]  #1: ffffffff8dfcabc0 (rcu_read_lock){....}-{1:3}, at: rt_spin_lock+0x1e0/0x400
[  328.713947][   T38]  #2: ffff88802a363190 (&xa->xa_lock#9){+.+.}-{3:3}, at: filemap_remove_folio+0xf0/0x3b0
[  328.713992][   T38] 6 locks held by syz.0.99/7361:
[  328.714002][   T38]  #0: ffff888044ab5d28 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x252/0x320
[  328.714042][   T38]  #1: ffff88805a6d2480 (sb_writers#13){.+.+}-{0:0}, at: vfs_write+0x22d/0xba0
[  328.714091][   T38]  #2: ffff88805a6d2770 (sb_internal#2){.+.+}-{0:0}, at: btrfs_sync_file+0xcae/0x1230
[  328.714141][   T38]  #3: ffff88803faab110 (btrfs_trans_num_writers){++++}-{0:0}, at: join_transaction+0x612/0xd50
[  328.714187][   T38]  #4: ffff88803faab138 (btrfs_trans_num_extwriters){++++}-{0:0}, at: join_transaction+0x612/0xd50
[  328.714232][   T38]  #5: ffff88805a6d20d0 (&type->s_umount_key#55){++++}-{4:4}, at: try_to_writeback_inodes_sb+0x22/0xc0
[  328.714283][   T38] 4 locks held by syz.0.99/7438:
[  328.729326][   T38]  #0: ffff88805a6d2480 (sb_writers#13){.+.+}-{0:0}, at: do_vfs_ioctl+0xe15/0x1540
[  328.729388][   T38]  #1: ffff8880605424f0 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: btrfs_inode_lock+0x51/0xe0
[  328.729440][   T38]  #2: ffff888060542350 (&ei->i_mmap_lock){+.+.}-{4:4}, at: btrfs_inode_lock+0xcb/0xe0
[  328.729486][   T38]  #3: ffff88805a6d2770 (sb_internal#2){.+.+}-{0:0}, at: btrfs_clone+0x1316/0x2540
[  328.729533][   T38] 1 lock held by btrfs-transacti/7409:
[  328.729544][   T38]  #0: ffff88803faa8d98 (&fs_info->transaction_kthread_mutex){+.+.}-{4:4}, at: transaction_kthread+0xe6/0x450
[  328.729595][   T38] 3 locks held by syz.2.267/10489:
[  328.729606][   T38]  #0: ffff88801b6ba480 (sb_writers#5){.+.+}-{0:0}, at: vfs_write+0x22d/0xba0
[  328.729653][   T38]  #1: ffff888037463f48 (&sb->s_type->i_mutex_key#15){+.+.}-{4:4}, at: shmem_file_write_iter+0x82/0x120
[  328.729703][   T38]  #2: ffffffff8dfcabc0 (rcu_read_lock){....}-{1:3}, at: unwind_next_frame+0xa6/0x2550
[  328.729750][   T38] 4 locks held by udevadm/10491:
[  328.729760][   T38]  #0: ffff88803b400430 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x194/0x9e0
[  328.729802][   T38]  #1: ffffffff8dfcabc0 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x29/0x200
[  328.729842][   T38]  #2: ffff888046d33598 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: pte_offset_map_lock+0x13d/0x210
[  328.729887][   T38]  #3: ffffffff8dfcabc0 (rcu_read_lock){....}-{1:3}, at: rt_spin_lock+0x1e0/0x400
[  328.729932][   T38] 6 locks held by syz.4.268/10494:
[  328.729943][   T38]  #0: ffff88801b6ba480 (sb_writers#5){.+.+}-{0:0}, at: vfs_write+0x22d/0xba0
[  328.729988][   T38]  #1: ffff888029ad19f0 (&sb->s_type->i_mutex_key#15){+.+.}-{4:4}, at: shmem_file_write_iter+0x82/0x120
[  328.730038][   T38]  #2: ffff888029ad1b28 (&xa->xa_lock#9){+.+.}-{3:3}, at: shmem_add_to_page_cache+0x74a/0xbf0
[  328.730083][   T38]  #3: ffffffff8dfcabc0 (rcu_read_lock){....}-{1:3}, at: rt_spin_lock+0x1e0/0x400
[  328.730127][   T38]  #4: ffffffff8dfcabc0 (rcu_read_lock){....}-{1:3}, at: lruvec_stat_mod_folio+0x6e/0x3e0
[  328.730173][   T38]  #5: ffffffff8dfcabc0 (rcu_read_lock){....}-{1:3}, at: mod_memcg_lruvec_state+0xd5/0x270
[  328.730220][   T38] 2 locks held by syz.3.269/10496:
[  328.730230][   T38]  #0: ffff88801b6ba480 (sb_writers#5){.+.+}-{0:0}, at: vfs_write+0x22d/0xba0
[  328.730275][   T38]  #1: ffff888038a27b08 (&sb->s_type->i_mutex_key#15){+.+.}-{4:4}, at: shmem_file_write_iter+0x82/0x120
[  328.730326][   T38] 1 lock held by udevadm/10497:
[  328.730334][   T38]  #0: ffffffff8e6f4178 (tomoyo_ss){.+.+}-{0:0}, at: tomoyo_path_perm+0x251/0x560
[  328.730375][   T38] 4 locks held by syz.5.266/10499:
[  328.730386][   T38]  #0: ffff8880321e0308 (vm_lock){++++}-{0:0}, at: lock_vma_under_rcu+0x1d1/0x500
[  328.730430][   T38]  #1: ffffffff8dfcabc0 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x29/0x200
[  328.730471][   T38]  #2: ffff888047841dd8 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: pte_offset_map_lock+0x13d/0x210
[  328.730515][   T38]  #3: ffffffff8dfcabc0 (rcu_read_lock){....}-{1:3}, at: rt_spin_lock+0x1e0/0x400
[  328.730562][   T38] 
[  328.730567][   T38] =============================================
[  328.730567][   T38] 
[  328.730597][   T38] NMI backtrace for cpu 1
[  328.730619][   T38] CPU: 1 UID: 0 PID: 38 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  328.730639][   T38] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[  328.730649][   T38] Call Trace:
[  328.730657][   T38]  <TASK>
[  328.730665][   T38]  dump_stack_lvl+0xe8/0x150
[  328.730689][   T38]  nmi_cpu_backtrace+0x274/0x2d0
[  328.730711][   T38]  ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10
[  328.730736][   T38]  nmi_trigger_cpumask_backtrace+0x17a/0x380
[  328.730766][   T38]  sys_info+0x135/0x170
[  328.730783][   T38]  watchdog+0xfd3/0x1030
[  328.730806][   T38]  ? watchdog+0x1c9/0x1030
[  328.730829][   T38]  kthread+0x388/0x470
[  328.730850][   T38]  ? __pfx_watchdog+0x10/0x10
[  328.730867][   T38]  ? __pfx_kthread+0x10/0x10
[  328.730889][   T38]  ret_from_fork+0x514/0xb70
[  328.730913][   T38]  ? __pfx_ret_from_fork+0x10/0x10
[  328.730934][   T38]  ? __switch_to+0xc79/0x1410
[  328.730955][   T38]  ? __pfx_kthread+0x10/0x10
[  328.730976][   T38]  ret_from_fork_asm+0x1a/0x30
[  328.731012][   T38]  </TASK>
[  328.731036][   T38] Sending NMI from CPU 1 to CPUs 0:
[  328.731064][    C0] NMI backtrace for cpu 0
[  328.731078][    C0] CPU: 0 UID: 0 PID: 17 Comm: pr/legacy Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  328.731096][    C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[  328.731105][    C0] RIP: 0010:delay_tsc+0x71/0xc0
[  328.731127][    C0] Code: 00 00 e8 b2 4a 68 f6 65 8b 05 eb c5 47 07 85 c0 74 1c f3 90 bf 01 00 00 00 e8 fb 48 68 f6 e8 76 86 01 00 39 c5 75 0e 0f 01 f9 <66> 90 eb bd e8 f6 c0 07 f6 eb dd 4c 29 fb e8 5c 86 01 00 89 c5 0f
[  328.731141][    C0] RSP: 0018:ffffc900001679d0 EFLAGS: 00000246
[  328.731155][    C0] RAX: 00000000898407d8 RBX: 0000000000000899 RCX: 0000000000000000
[  328.731166][    C0] RDX: 00000000000000ac RSI: ffffffff8ba9cd60 RDI: ffffffff8ba9cd20
[  328.731177][    C0] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[  328.731187][    C0] R10: dffffc0000000000 R11: ffffffff8b2b79f0 R12: 1ffffffff3374446
[  328.731199][    C0] R13: 00000000ffffffff R14: 000000ac89840730 R15: 0000000000000024
[  328.731210][    C0] FS:  0000000000000000(0000) GS:ffff888125eec000(0000) knlGS:0000000000000000
[  328.731223][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  328.731234][    C0] CR2: 00007f6e333ff000 CR3: 000000003f550000 CR4: 00000000003526f0
[  328.731249][    C0] Call Trace:
[  328.731255][    C0]  <TASK>
[  328.731263][    C0]  wait_for_lsr+0x166/0x2f0
[  328.731284][    C0]  serial8250_console_write+0x11c9/0x1b90
[  328.731310][    C0]  ? __pfx_serial8250_console_write+0x10/0x10
[  328.731332][    C0]  ? console_flush_one_record+0xfa/0xb90
[  328.731354][    C0]  ? console_flush_one_record+0x48f/0xb90
[  328.731375][    C0]  console_flush_one_record+0x68b/0xb90
[  328.731397][    C0]  ? console_flush_one_record+0xfa/0xb90
[  328.731418][    C0]  ? __pfx_console_flush_one_record+0x10/0x10
[  328.731437][    C0]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  328.731456][    C0]  legacy_kthread_func+0x1b6/0x250
[  328.731476][    C0]  ? __pfx_legacy_kthread_func+0x10/0x10
[  328.731494][    C0]  ? __pfx_autoremove_wake_function+0x10/0x10
[  328.731513][    C0]  ? __kthread_parkme+0x7a/0x1f0
[  328.731533][    C0]  kthread+0x388/0x470
[  328.731551][    C0]  ? __pfx_legacy_kthread_func+0x10/0x10
[  328.731567][    C0]  ? __pfx_kthread+0x10/0x10
[  328.731585][    C0]  ret_from_fork+0x514/0xb70
[  328.731605][    C0]  ? __pfx_ret_from_fork+0x10/0x10
[  328.731623][    C0]  ? __switch_to+0xc79/0x1410
[  328.731640][    C0]  ? __pfx_kthread+0x10/0x10
[  328.731658][    C0]  ret_from_fork_asm+0x1a/0x30
[  328.731687][    C0]  </TASK>
[  328.752284][   T38] Kernel panic - not syncing: hung_task: blocked tasks
[  328.752312][   T38] CPU: 1 UID: 0 PID: 38 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  328.752333][   T38] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[  328.752344][   T38] Call Trace:
[  328.752352][   T38]  <TASK>
[  328.752360][   T38]  vpanic+0x56c/0xa60
[  328.752386][   T38]  ? __pfx___schedule+0x10/0x10
[  328.752411][   T38]  ? __pfx_vpanic+0x10/0x10
[  328.752442][   T38]  panic+0xc5/0xd0
[  328.752463][   T38]  ? __pfx_panic+0x10/0x10
[  328.752486][   T38]  ? preempt_schedule_thunk+0x16/0x40
[  328.752510][   T38]  ? nmi_trigger_cpumask_backtrace+0x319/0x380
[  328.752538][   T38]  watchdog+0x102c/0x1030
[  328.752564][   T38]  ? watchdog+0x1c9/0x1030
[  328.752593][   T38]  kthread+0x388/0x470
[  328.752614][   T38]  ? __pfx_watchdog+0x10/0x10
[  328.752630][   T38]  ? __pfx_kthread+0x10/0x10
[  328.752651][   T38]  ret_from_fork+0x514/0xb70
[  328.752676][   T38]  ? __pfx_ret_from_fork+0x10/0x10
[  328.752697][   T38]  ? __switch_to+0xc79/0x1410
[  328.752718][   T38]  ? __pfx_kthread+0x10/0x10
[  328.752739][   T38]  ret_from_fork_asm+0x1a/0x30
[  328.752775][   T38]  </TASK>
[  328.753134][   T38] Kernel Offset: disabled