Extracting prog: 25m53.968762397s
Minimizing prog: 1h40m7.629938713s
Simplifying prog options: 9m54.056317264s
Extracting C: 5m15.959878724s
Simplifying C: 0s


extracting reproducer from 68 programs
testing a last program of every proc
single: executing 21 programs separately with timeout 6m0s
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount$fuse-mount-chdir-mkdirat-mkdirat-mount
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./file1\x00', 0x0)
mount$fuse(0x0, 0x0, 0x0, 0xfc5cd7921c2c9944, &(0x7f0000000400)=ANY=[@ANYBLOB='fd=', @ANYRESHEX=0x0])
mount(0x0, &(0x7f0000000380)='./file1\x00', &(0x7f0000000040)='autofs\x00', 0x0, &(0x7f0000000400))
chdir(0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./file7\x00', 0x144)
mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$sock_proto_private-openat-openat$sequencer2-prctl$PR_SCHED_CORE-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-socket$nl_generic-setsockopt$inet_sctp6_SCTP_MAXSEG-sendmsg$nl_generic-writev-setsockopt$sock_int-listen-fsopen-fsconfig$FSCONFIG_SET_STRING-fsconfig$FSCONFIG_CMD_CREATE-getxattr-openat$comedi-ioctl$COMEDI_DEVCONFIG-ioctl$COMEDI_DEVINFO-sendmsg$NFT_BATCH-ioctl$SNDCTL_SEQ_CTRLRATE-syz_open_dev$cec-ioctl$CEC_ADAP_S_LOG_ADDRS
detailed listing:
executing program 0:
ioctl$sock_proto_private(0xffffffffffffffff, 0x891d, 0x0)
r0 = openat(0xffffffffffffffff, &(0x7f0000000380)='./cgroup.cpu/cgroup.procs\x00', 0x0, 0x0)
r1 = openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000300), 0x103000, 0x0)
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r2 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
r3 = socket$nl_generic(0x10, 0x3, 0x10)
setsockopt$inet_sctp6_SCTP_MAXSEG(r0, 0x84, 0xd, &(0x7f0000000340)=@assoc_value={0x0, 0x4}, 0x8)
sendmsg$nl_generic(r3, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000001080)=ANY=[@ANYBLOB="3000000040000701feffffff00000000047c0000040042801400018006"], 0x30}, 0x1, 0x0, 0x0, 0x48815}, 0xc000)
writev(r2, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
setsockopt$sock_int(0xffffffffffffffff, 0x1, 0xf, &(0x7f0000000000)=0x5, 0x4)
listen(0xffffffffffffffff, 0x0)
r4 = fsopen(&(0x7f0000000280)='ceph\x00', 0x0)
fsconfig$FSCONFIG_SET_STRING(r4, 0x1, &(0x7f0000000b40)='source', &(0x7f0000000040)='c:::\x00', 0x0)
fsconfig$FSCONFIG_CMD_CREATE(r4, 0x6, 0x0, 0x0, 0x0)
getxattr(&(0x7f0000000080)='./cgroup.cpu/cgroup.procs\x00', &(0x7f00000001c0)=ANY=[@ANYBLOB="6f73322e2e0050917f085c7ba374abb7e55fa5da6a3134ec244923459bff7141bc3c6a87ac28e6c8e60671b62aa01a914ab048d5ebfd"], &(0x7f0000000100)=""/36, 0x24)
r5 = openat$comedi(0xffffffffffffff9c, &(0x7f0000000080)='/dev/comedi3\x00', 0x400, 0x0)
ioctl$COMEDI_DEVCONFIG(r5, 0x40946400, &(0x7f0000001a00)={'pcmmio\x00', [0x2000, 0x2, 0x8, 0x1, 0x25, 0x0, 0x400, 0x7, 0x54c6cff3, 0xfd, 0x287, 0x3, 0xfffffff7, 0x400001, 0x6, 0x5, 0x0, 0x7f, 0x3, 0x40000003, 0x200089, 0x4, 0x4, 0x20001e5b, 0x3, 0xe66, 0x3, 0x6, 0x4006, 0x0, 0x3]})
ioctl$COMEDI_DEVINFO(r5, 0x80b06401, &(0x7f0000000240))
sendmsg$NFT_BATCH(0xffffffffffffffff, 0x0, 0x50)
ioctl$SNDCTL_SEQ_CTRLRATE(r1, 0xc0045103, &(0x7f00000000c0)=0x6)
r6 = syz_open_dev$cec(&(0x7f0000000200), 0xffffffffffffffff, 0x4a320)
ioctl$CEC_ADAP_S_LOG_ADDRS(r6, 0xc05c6104, &(0x7f0000000140)={"4497acf4", 0xb, 0x4, 0xfc, 0x3, 0x1000006, "5500578ea5f4ffffffeb00001000", "1575b859", '\x00', '\'q6O', ["aabe8459c62224475793e8a7", "7f9ce2d2c4f439ff80e1d1c8", "fa0700f22b42a3023be516d1"]})

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount$fuse-mount-chdir-mkdirat-mkdirat-mount
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./file1\x00', 0x0)
mount$fuse(0x0, 0x0, 0x0, 0xfc5cd7921c2c9944, &(0x7f0000000400)=ANY=[@ANYBLOB='fd=', @ANYRESHEX=0x0])
mount(0x0, &(0x7f0000000380)='./file1\x00', &(0x7f0000000040)='autofs\x00', 0x0, &(0x7f0000000400))
chdir(0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./file7\x00', 0x144)
mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_generic-mkdirat-mount-openat-write-read$FUSE-timer_create-openat$cgroup_ro-syz_mount_image$msdos-write$UHID_INPUT-mmap-mknod
detailed listing:
executing program 0:
socket$nl_generic(0x10, 0x3, 0x10)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./debug\x00', &(0x7f0000000300)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./debug/netdevsim/netdevsim0/health/break_health\x00', 0x1, 0x0)
write(r0, &(0x7f0000000340)="053ac3", 0x3)
read$FUSE(0xffffffffffffffff, 0x0, 0x0)
timer_create(0x0, &(0x7f00000000c0)={0x0, 0x21, 0x2}, &(0x7f0000000140))
r1 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000200)='blkio.bfq.group_wait_time\x00', 0x275a, 0x0)
syz_mount_image$msdos(&(0x7f0000000180), &(0x7f0000000040)='.\x00', 0x18920f4, &(0x7f00000001c0)=ANY=[], 0x0, 0x0, &(0x7f0000000000))
write$UHID_INPUT(r1, &(0x7f0000010140)={0x8, {"7f9654d636ab18b7938a2804505c72e9994ca22404fc203334cc21ed3d6a776fd12d13f9602b2980f983c31a5d1e431db778099ce3af3fb20e1ee1f4fdb77cbb36154982a93c19825d6fd273ab1eb5bcd47adad50de8a6791486e482e29ecc94284921f33b941cfc1000c9781d9a828c5ec7a2c77b4e624a5aa0e9e39782bad733eda81ba47e1c6116e4170e6587dd6210a57abe91f1f80c4e31139d8b73fe35ac1f99ea82dd6aa9c9aa67de88ae3e141020e1a876bbc449d2d843aa7e6d90b948b7e28770e6ac71010c63f17e90fd20806a9f8d9f418ee3af74aac64b04a27c4f5e3626ca2da546c79d24acadd11e8d272a22fc54078fd5e64475993668980a9f95aff964dee674356af492b8377a759d8ccf1accb9a18ef7ad16f438dde69cd020d71552b0810688c882a26a22b23f4b35471b08b379193db1cd7934a4049ff1b00d9795cda6e73951641d5e2365c24facd5afd09ed1d096d758b4fef66fe1aa22395d67b7e1db623d4a60a7dc93893d6c4a91df79535a855868c5dc0033d5c428cd25b85c5deb6e81068553bc84cead4d1eba8aa57e2b354a6899e44acbd3834491219b3e231cd55d82f161774a689efe197cc193ac0124c67738a0a1d5f16a6768c2c2ba7386c8c95ca08c55117f344f5a2bca0d09e79ea3fc49491f2c7adc513c2779c1bf62b1a8643d23e9e8b2ae41d4a59f1b82b82e092b36eb851b8456da871b4057aec325a9d4cccafde61f2abc85e3cabeabb856f6ffbfe23d69219ec8fae6beb54abe7870dbae823d49806a967a1c7f252999804f106745f20490bb3347b59321dc69765567abcbd89de04d89622170005df5871ed0fb72345a11da074060d7d4ee2e437f71a45723fb6b02de56067e54f54c52d10f7874a13cbfb3bd65ce54f9d6719ea210e0cf79e4e2157736ec07ac5915682ab81bced665c1e72fab8d8cfe509de0f21fe374b957b379fd5918061e21c2e96985cc1354b2de859b0f1a463ab04683b1253eda671c2353b5c208aca652f5419ffc4949a7fa909b95653f42d97390c400b4a1c308b11e73e9a06d3b164d3361e75584d70e6bc61d570a7e0c7da330f643194c1893fcd6489fac605eead61b53dff18caf526ecccc9bbd9146bc3c3bb67677695e6fddaab081786e9084014e60f5c03ae5a9087726b05e17402cd2fbb80d773b8a41470b1f901a8c2b2d57450181f4fc5bc53c7cb3dc032b84567492607cb08832eca9f79da9210d197863e5db5a74a9823dc0cc8bd9f3a9b6ff5a7d15d4747a9b26e088f4fad96d81cd1214226b1c4585d418d593220fcbb9ad949266cc48163e3498b46ebcdf7b2b5ecfe67539a61ed9e39b02d5b35ac0d0e7fa830034ca2da8a7ddf04bcf2cee939994369feb77023e0e3de04b21db7a640a92c17748245005cd75a7deba4ff0e4c104a9db2d9a98ec8edb3562050a3bac5f322290e3d8b6fb21770ac436d4cb12b97fc8f76d7bb9eeed85663eb0626f1ad1719ee4b07f7de2c1d1a31c27c6879f4fa3dbdfb2bfc0898beabafbeca9f13050e6b2f6c432e423cd5cb6b8fa56fe32c3e50104e44462c0a5c69de6a7ac5ae3d9f07ceed64dbffa42e4663838bfcde92f0fcb895f3b93c59b0e48c09890dfc36436db56b708f6e7cbbd2a6305f573cee099dbcd263cb96d9fb69cbc3cb06d8f5e3789698a17e71d22b4665ff5447fcc17a31bb136c8bb4b984573bcaf1cb650198c1266e6ddfd42d44f9de02cb9d915c5334c550fac3fcee56790aeb09d81e7690a32d8b0cc477b23f15257820de227be1ffaec2f63f3266b8f5dd78947dcee355fe59bfb100e5244425532bb1d115acd211b8c16b0ec0aae00fca5d4511a05c3ff027a1cac56210a10d81c01b90e156cc7b33de0fac825dc516d398166096013e068db935483c93ba95da39b5ae4087d84479a4c4809f28f93790dc279637bd6f3dc441d315cf6bd7b0e3d92070a45baf4445ce063fd12690eb002f5ca068a256bc54100c99a02a346beca39072163c4b297d117f1ed9fef42e3dbc11d36a0a0db52e84461c6fbb4aad62cd6c8dc9ae6a3390a5e8773ac599e67436220c8d541a9039762bffaa7f490e31dddbc362fb4ff686cda905f3b02a1db76d4d570d970434921ca8a4765af6d5c8b881e1f4ffa7e2d9ef5f5511b94f88474674ec790bb5186c73446a227bf1ffd19b605733abd1bd41e421aeaf2ed4617088c7ceef85451225056435993e89e4bccd2c2e4b39af99feef11fea645eeb5cf9f77b1e19a72d3efb613100969b84302789714bca65bcbc96762b4012a5700c62aed706433b9f142b7302442b6a9958b0e28e8b1cfa9eeb4ac0d71f497b23babf9f0221dcb658d9f4db5d45bee30d2ad7c97d6a562e014a7701c15325ec5d42ab732b37714a77a95c03fb15bbfba6fade32bf50f985a1df362ca7216cc152907dd931acb58a63920f581e82b590c0d6a0033009f8e50c3263d3f58596b63d507cadbc809a6690561f74d0772bf92d04e06c47a350724b106f5e83f7e71c4b2a983bf5ad7d8684e7b8b5dc1273d0fa5879b8e61bde33d602bc8ff0913b6d32dcac366d568dc7cf82bbfc405cbe418a2644c26592b32ca1a632fc95123efb784cfb6953a94ebeccd24fba389a0e56b043df07d9a2dd38a1196e5e55576b25f85cb96f6560802a4a58b7a6857e8454faa2c880bf32d464562b2bdc5f0df22b663f2c01fc944f1cfd1908f617f8295a5440bb79ae178ea46a95baeea48322105146ac3ed2de7d3796ddddcc848a8ecf4a00dd055733b4f59211f5a40deea44e74b3bc57953b26ed61e6fd67889edfe8d0902385e37666aacec072735630ecc441c3cc6b09bb2f63aa4e332c6df728dc74078a83ce20454dfd616d116270666ddc09c5fea2e8442bc43455d0257fac92f3780061178f9420bf8e463f29896c12383dbb9a81bc5c87376e647c8a7986cb514fb9696d9c0a8d303c5c4b5b7c5f601c01fa19323e02f675c371bc44fbc1ac5704d41a89a2a4ccec6ac8440c532f07da25aa2dce6a5d2ebe694eb4017d178b221213bfe2a01d9cfe689bd190776bca6c032f446eb8862587a7826e35f3f691763212eee6af2e49bbeb0a27e07c5714b74e373798c7bebce265f7ebef3a1ea64078cf1e8a9d433af32c53090c972ffedbadafb50b9a6e540abd84f8e938583ea725954be3b236c5d8aca7d486d21902a2902f25a7c02dbe83c39bd0b81513f9ef198c49d560e930ae224ff47f92e4851e1f7ab5bb406abcf6596569261e6b0c67bb3b854e9c6de60bfb60fcf29241ff237151310ecd19f8b2cfe764c1df1a2de9d840eca47aa169ba9a415901204ec31ccdfd76e908029ae34fb12dc286758c64fd6d42bc82b14e07e421f4b42b180cd6ef40cac8062928b4a420a4577f24295f54de9048ac9d34307bf93e463cea4967cf4880166f68ed1eb965db2e4fb9f5f0b1c695d621e427ccb9a3188073ee6fde729c6698346efa1c0ba643c1efd20858965511da750060d551c44c435a5f1603fae7357e0bc78e92aad3d88790ec2aa1a42d6fe7e0ffc57f3599e406db63be7dd32692df32ce33dee0a2becdb02d6e435e09de3d356497543db23f53da25643f9c585e275297800d8beed47f0e622f86fc25d2e87036fdceebfe7257cb6de0c02412d1c0758acfcd0862e99ad17a118f46f635a87477e8b825423d94ada35bf0b5444aa7d3de4bb7eec7ae5129fcc2cba651cc972f5500fc5161149d29f452962afb102a01ae76825cb4477460be0b85d75058595c27e9b7fae3492ec3925c671bee5f4ca534d5a294f783d6cc073c992139b61d21fd98297b04c0578dafd5f7ebcaf8d4d9185aea3d76e813421f4573b38c25093c015a65e44fb297f0f6ac2d02c4237b37a3bfca2406c5c95ae5812816bacad59ba7c6f72d7c644ff25b592ed1e89b276e05866c01a4ced7fc6dd9f190c20d420d7c8a1fe908833a24c5e5bd7a95a2a6fbf147fc4b29a179718166dd0fbae2fc6b8c8aac6194fa6baf0d3edc36b2316c56c441ba53e3e7aaaf0a1405566ff584f73a637b74dde9bcb4d41da2be6c9df5d533fbac54f5fb52a8a793757cfe19aa90048c6d07e3474136ae1be2455b0d0d02eb4b5961ba883209355c0dd2af4aad98e7b971e358a7d9b55fe17cd6095f257355d9b99e5ea52848f17b35a80792d9ed0fef6fe3eef9a324902409969823be20bbe0e8dba9c747cd1a14d3642d877b86271f3f0c322a142c4ff635b37d542c3265b5fe8589a732bb1a55010b930dd0196cd43ac3634c01b4a44c517197d03a3d89c67f5c09aab409e84c0af466bfbd0c96d240101a2542c66b4b4b8ef65b41b0079995c52cc9720d2c1d7c128c6f17a65cc798c1986cfbd8888460c54438edc4f91f3580391c8b57d9aee209a59a116c1c44775437e9c30e6d87e82ce84e28532b19441e32ab9aea22177bac9daad25a6c88395e9348d6780de630cddb266c411011175bdb6255a36535180818447d43ffba3758d311539fe9f6811fa470bf3767b4c2d4cdf37854c7ee28730bb1d39d5c0dfffcdbf353cca3e13079f3ae66b839c7dd36914022a0e75bca5b622f521420b73249ef47f03c1fb03ecf7557882afcaa7cf454a68ad237d4ce860bd6b1531c1cafe2cfb76bc4188271ef6bdfb304ee0e6932463a1909f03d6e8a27b5f137d6b342841d613863dfdf37d5ec3a98d667810fb6f82d67620bdefed8b3ff98420a6c7ee577c3ba68b95a20403608a7ba6526ec9e8662c6e15ab09b1a9019d4958af04cb2e4890ee6b1077fcaa5cc0817f388461b230fe631e75f18ab392a5ca5de4a024ca16dd05fcfdf92114e43a5c4a169d462ff0dba57deeaf5eaafd892f8ccbd72ac56471162e1416bca39859b4184ba0d1b3f7ec05db4ef4cf0142867fa9be328a0be8aa74c716aad9411008607980861f4f72e9bfa60195e2f939d3f6a44a6cec07dd376d1bccaa126686f313d5f7918ecd1215026982c82ed1922ef70e36e8ed59b2d5ceab3b4aad7e53049062dd5ba0e87f7005c3f4d2b788245cdc2f35ef2572bea5ea92dfad406ade6d5ad18be8eeb4c652e5277b244645c68c0c0f5a68d42e00d59b75941917b2cdf31fdf809f2078ca97fd5beba65b34e0621138ea0e94feb87166b2dac2232ebca575e5c0a4d565d9992f733bbfbe68a63d99ee93398604065d5517c33ed0e067bdb643e73102f16137afd7d4bf21e8065ea028c392a6dcefbe642dc3fb03a239d9c8b17023eacc8e19fea11c34a10644af1b786fc0f4504038c2ee59c1b353f3d7b9313df025b4b5874ca63ec164a3fe35bf390d266f53dcda6a8e190e63a56ffdf4f7c5c02aa22d376db06d4d2b96be5b331f897d1ecfd25c13a1c194c265dd95a5724a6435bc8138224d9db28b689b9cea5132cd19601dbc4a43e70c71e27e8fd0689d09484974e8a4605f8553735fffaf5654a087e323ca14e02b681b9bbe592bd6b719ae2e86bdf918b27c79d52dd334d1aa7ebc1bff76e97572faad092010a1022f7d33089049107a89c364ae7dd022d119e8f6ab795fd71d76a90e8202339401ff9e9918ea8c8e12f7b0ba10d9ebde5d1bc5988f2d07b34579d8c282628204f2978d8b0cf95dc41f3775a4053f833267c64b42336d7c850f2918ef0dd6d62e43fcc173254eb34748efd4754609ce25afd648ee5a8fc5c64346603f8258592d67b9613e8f7ac0def0958f13436581d729e0b3e062738eb06b2116abe837529690a614fc5d3f53b4d4602e5706000", 0x1000}}, 0x1006)
mmap(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x1, 0x10012, r1, 0x0)
mknod(&(0x7f0000000040)='./file0\x00', 0x8001420, 0x0)

program crashed: INFO: task hung in remove_one
single: successfully extracted reproducer
found reproducer with 12 syscalls
minimizing guilty program
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_generic-mkdirat-mount-openat-write-read$FUSE-timer_create-openat$cgroup_ro-syz_mount_image$msdos-write$UHID_INPUT-mmap
detailed listing:
executing program 0:
socket$nl_generic(0x10, 0x3, 0x10)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./debug\x00', &(0x7f0000000300)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./debug/netdevsim/netdevsim0/health/break_health\x00', 0x1, 0x0)
write(r0, &(0x7f0000000340)="053ac3", 0x3)
read$FUSE(0xffffffffffffffff, 0x0, 0x0)
timer_create(0x0, &(0x7f00000000c0)={0x0, 0x21, 0x2}, &(0x7f0000000140))
r1 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000200)='blkio.bfq.group_wait_time\x00', 0x275a, 0x0)
syz_mount_image$msdos(&(0x7f0000000180), &(0x7f0000000040)='.\x00', 0x18920f4, &(0x7f00000001c0)=ANY=[], 0x0, 0x0, &(0x7f0000000000))
write$UHID_INPUT(r1, &(0x7f0000010140)={0x8, {"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", 0x1000}}, 0x1006)
mmap(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x1, 0x10012, r1, 0x0)

program crashed: INFO: task hung in remove_one
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_generic-mkdirat-mount-openat-write-read$FUSE-timer_create-openat$cgroup_ro-syz_mount_image$msdos-write$UHID_INPUT
detailed listing:
executing program 0:
socket$nl_generic(0x10, 0x3, 0x10)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./debug\x00', &(0x7f0000000300)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./debug/netdevsim/netdevsim0/health/break_health\x00', 0x1, 0x0)
write(r0, &(0x7f0000000340)="053ac3", 0x3)
read$FUSE(0xffffffffffffffff, 0x0, 0x0)
timer_create(0x0, &(0x7f00000000c0)={0x0, 0x21, 0x2}, &(0x7f0000000140))
r1 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000200)='blkio.bfq.group_wait_time\x00', 0x275a, 0x0)
syz_mount_image$msdos(&(0x7f0000000180), &(0x7f0000000040)='.\x00', 0x18920f4, &(0x7f00000001c0)=ANY=[], 0x0, 0x0, &(0x7f0000000000))
write$UHID_INPUT(r1, &(0x7f0000010140)={0x8, {"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", 0x1000}}, 0x1006)

program crashed: INFO: task hung in remove_one
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_generic-mkdirat-mount-openat-write-read$FUSE-timer_create-openat$cgroup_ro-syz_mount_image$msdos
detailed listing:
executing program 0:
socket$nl_generic(0x10, 0x3, 0x10)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./debug\x00', &(0x7f0000000300)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./debug/netdevsim/netdevsim0/health/break_health\x00', 0x1, 0x0)
write(r0, &(0x7f0000000340)="053ac3", 0x3)
read$FUSE(0xffffffffffffffff, 0x0, 0x0)
timer_create(0x0, &(0x7f00000000c0)={0x0, 0x21, 0x2}, &(0x7f0000000140))
openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000200)='blkio.bfq.group_wait_time\x00', 0x275a, 0x0)
syz_mount_image$msdos(&(0x7f0000000180), &(0x7f0000000040)='.\x00', 0x18920f4, &(0x7f00000001c0)=ANY=[], 0x0, 0x0, &(0x7f0000000000))

program crashed: INFO: task hung in remove_one
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_generic-mkdirat-mount-openat-write-read$FUSE-timer_create-openat$cgroup_ro
detailed listing:
executing program 0:
socket$nl_generic(0x10, 0x3, 0x10)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./debug\x00', &(0x7f0000000300)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./debug/netdevsim/netdevsim0/health/break_health\x00', 0x1, 0x0)
write(r0, &(0x7f0000000340)="053ac3", 0x3)
read$FUSE(0xffffffffffffffff, 0x0, 0x0)
timer_create(0x0, &(0x7f00000000c0)={0x0, 0x21, 0x2}, &(0x7f0000000140))
openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000200)='blkio.bfq.group_wait_time\x00', 0x275a, 0x0)

program crashed: INFO: task hung in remove_one
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_generic-mkdirat-mount-openat-write-read$FUSE-timer_create
detailed listing:
executing program 0:
socket$nl_generic(0x10, 0x3, 0x10)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./debug\x00', &(0x7f0000000300)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./debug/netdevsim/netdevsim0/health/break_health\x00', 0x1, 0x0)
write(r0, &(0x7f0000000340)="053ac3", 0x3)
read$FUSE(0xffffffffffffffff, 0x0, 0x0)
timer_create(0x0, &(0x7f00000000c0)={0x0, 0x21, 0x2}, &(0x7f0000000140))

program crashed: INFO: task hung in remove_one
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_generic-mkdirat-mount-openat-write-read$FUSE
detailed listing:
executing program 0:
socket$nl_generic(0x10, 0x3, 0x10)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./debug\x00', &(0x7f0000000300)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./debug/netdevsim/netdevsim0/health/break_health\x00', 0x1, 0x0)
write(r0, &(0x7f0000000340)="053ac3", 0x3)
read$FUSE(0xffffffffffffffff, 0x0, 0x0)

program crashed: INFO: task hung in remove_one
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_generic-mkdirat-mount-openat-write
detailed listing:
executing program 0:
socket$nl_generic(0x10, 0x3, 0x10)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./debug\x00', &(0x7f0000000300)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./debug/netdevsim/netdevsim0/health/break_health\x00', 0x1, 0x0)
write(r0, &(0x7f0000000340)="053ac3", 0x3)

program crashed: INFO: task hung in remove_one
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_generic-mkdirat-mount-openat
detailed listing:
executing program 0:
socket$nl_generic(0x10, 0x3, 0x10)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./debug\x00', &(0x7f0000000300)='debugfs\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000600)='./debug/netdevsim/netdevsim0/health/break_health\x00', 0x1, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_generic-mkdirat-mount-write
detailed listing:
executing program 0:
socket$nl_generic(0x10, 0x3, 0x10)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./debug\x00', &(0x7f0000000300)='debugfs\x00', 0x0, 0x0)
write(0xffffffffffffffff, &(0x7f0000000340)="053ac3", 0x3)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_generic-mkdirat-openat-write
detailed listing:
executing program 0:
socket$nl_generic(0x10, 0x3, 0x10)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./debug\x00', 0x1ff)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./debug/netdevsim/netdevsim0/health/break_health\x00', 0x1, 0x0)
write(r0, &(0x7f0000000340)="053ac3", 0x3)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_generic-mount-openat-write
detailed listing:
executing program 0:
socket$nl_generic(0x10, 0x3, 0x10)
mount(0x0, &(0x7f0000000200)='./debug\x00', &(0x7f0000000300)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./debug/netdevsim/netdevsim0/health/break_health\x00', 0x1, 0x0)
write(r0, &(0x7f0000000340)="053ac3", 0x3)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./debug\x00', &(0x7f0000000300)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./debug/netdevsim/netdevsim0/health/break_health\x00', 0x1, 0x0)
write(r0, &(0x7f0000000340)="053ac3", 0x3)

program crashed: INFO: task hung in remove_one
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mount(0x0, &(0x7f0000000200)='./debug\x00', &(0x7f0000000300)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./debug/netdevsim/netdevsim0/health/break_health\x00', 0x1, 0x0)
write(r0, &(0x7f0000000340)="053ac3", 0x3)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./debug\x00', 0x1ff)
mount(0x0, 0x0, &(0x7f0000000300)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./debug/netdevsim/netdevsim0/health/break_health\x00', 0x1, 0x0)
write(r0, &(0x7f0000000340)="053ac3", 0x3)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./debug\x00', 0x0, 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./debug/netdevsim/netdevsim0/health/break_health\x00', 0x1, 0x0)
write(r0, &(0x7f0000000340)="053ac3", 0x3)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./debug\x00', &(0x7f0000000300)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, 0x0, 0x1, 0x0)
write(r0, &(0x7f0000000340)="053ac3", 0x3)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./debug\x00', &(0x7f0000000300)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./debug/netdevsim/netdevsim0/health/break_health\x00', 0x1, 0x0)
write(r0, 0x0, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./debug\x00', &(0x7f0000000300)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./debug/netdevsim/netdevsim0/health/break_health\x00', 0x1, 0x0)
write(r0, &(0x7f0000000340), 0x0)

VM was preempted during syz execution: failed to run command in VM: instance is preempted, retrying
program did not crash
extracting C reproducer
testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
simplifying guilty program options
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./debug\x00', &(0x7f0000000300)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./debug/netdevsim/netdevsim0/health/break_health\x00', 0x1, 0x0)
write(r0, &(0x7f0000000340)="053ac3", 0x3)

program crashed: INFO: task hung in devlink_health_report
a never seen crash title: INFO: task hung in devlink_health_report, ignore
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./debug\x00', &(0x7f0000000300)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./debug/netdevsim/netdevsim0/health/break_health\x00', 0x1, 0x0)
write(r0, &(0x7f0000000340)="053ac3", 0x3)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./debug\x00', &(0x7f0000000300)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./debug/netdevsim/netdevsim0/health/break_health\x00', 0x1, 0x0)
write(r0, &(0x7f0000000340)="053ac3", 0x3)

program crashed: INFO: task hung in remove_one
validation run: crashed=true
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./debug\x00', &(0x7f0000000300)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./debug/netdevsim/netdevsim0/health/break_health\x00', 0x1, 0x0)
write(r0, &(0x7f0000000340)="053ac3", 0x3)

program crashed: INFO: task hung in remove_one
validation run: crashed=true
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./debug\x00', &(0x7f0000000300)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./debug/netdevsim/netdevsim0/health/break_health\x00', 0x1, 0x0)
write(r0, &(0x7f0000000340)="053ac3", 0x3)

program crashed: INFO: task hung in remove_one
validation run: crashed=true
reproducing took 2h36m18.18543647s
repro crashed as (corrupted=false):
INFO: task kworker/u4:3:49 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:3    state:D stack:23752 pid:49    ppid:2      flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x15ae/0x4660 kernel/sched/core.c:6701
 schedule+0xbd/0x170 kernel/sched/core.c:6775
 schedule_timeout+0xc1/0x2d0 kernel/time/timer.c:2144
 do_wait_for_common kernel/sched/completion.c:95 [inline]
 __wait_for_common kernel/sched/completion.c:116 [inline]
 wait_for_common kernel/sched/completion.c:127 [inline]
 wait_for_completion+0x2c6/0x5a0 kernel/sched/completion.c:148
 __debugfs_file_removed fs/debugfs/inode.c:748 [inline]
 remove_one+0xe8/0x130 fs/debugfs/inode.c:754
 simple_recursive_removal+0x613/0x7e0 fs/libfs.c:633
 debugfs_remove+0x56/0x70 fs/debugfs/inode.c:777
 nsim_dev_health_exit+0x41/0xc0 drivers/net/netdevsim/health.c:281
 nsim_dev_reload_destroy+0x2ba/0x480 drivers/net/netdevsim/dev.c:1665
 nsim_dev_reload_down+0x8a/0xc0 drivers/net/netdevsim/dev.c:968
 devlink_reload+0x150/0x600 net/devlink/dev.c:389
 devlink_pernet_pre_exit+0x197/0x360 net/devlink/core.c:288
 ops_pre_exit_list net/core/net_namespace.c:163 [inline]
 cleanup_net+0x581/0xb00 net/core/net_namespace.c:636
 process_one_work kernel/workqueue.c:2657 [inline]
 process_scheduled_works+0xa60/0x1600 kernel/workqueue.c:2734
 worker_thread+0xa5e/0xfe0 kernel/workqueue.c:2815
 kthread+0x2fa/0x390 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </TASK>
INFO: task syz-executor:5896 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:21576 pid:5896  ppid:1      flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x15ae/0x4660 kernel/sched/core.c:6701
 schedule+0xbd/0x170 kernel/sched/core.c:6775
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6834
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0x673/0xc80 kernel/locking/mutex.c:747
 nsim_drv_remove+0x50/0x170 drivers/net/netdevsim/dev.c:1676
 device_remove drivers/base/dd.c:626 [inline]
 __device_release_driver drivers/base/dd.c:1351 [inline]
 device_release_driver_internal+0x408/0x6f0 drivers/base/dd.c:1374
 bus_remove_device+0x43b/0x520 drivers/base/bus.c:624
 device_del+0x51f/0x910 drivers/base/core.c:3956
 device_unregister+0x20/0xc0 drivers/base/core.c:3997
 nsim_bus_dev_del drivers/net/netdevsim/bus.c:310 [inline]
 del_device_store+0x2b6/0x370 drivers/net/netdevsim/bus.c:219
 kernfs_fop_write_iter+0x3a4/0x520 fs/kernfs/file.c:352
 call_write_iter include/linux/fs.h:2018 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x474/0x9a0 fs/read_write.c:584
 ksys_write+0x151/0x260 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fc9e315ea0e
RSP: 002b:00007ffdb346cc38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000055556f0f4500 RCX: 00007fc9e315ea0e
RDX: 0000000000000001 RSI: 00007ffdb346ccc0 RDI: 0000000000000005
RBP: 00007fc9e323610b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffdb346ccc0 R14: 00007fc9e3f54620 R15: 0000000000000003
 </TASK>
INFO: task syz-executor:5900 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:22040 pid:5900  ppid:1      flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x15ae/0x4660 kernel/sched/core.c:6701
 schedule+0xbd/0x170 kernel/sched/core.c:6775
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6834
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0x673/0xc80 kernel/locking/mutex.c:747
 del_device_store+0xd7/0x370 drivers/net/netdevsim/bus.c:209
 kernfs_fop_write_iter+0x3a4/0x520 fs/kernfs/file.c:352
 call_write_iter include/linux/fs.h:2018 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x474/0x9a0 fs/read_write.c:584
 ksys_write+0x151/0x260 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f27a3f5ea0e
RSP: 002b:00007ffd7a341d58 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000555594f2c500 RCX: 00007f27a3f5ea0e
RDX: 0000000000000001 RSI: 00007ffd7a341de0 RDI: 0000000000000005
RBP: 00007f27a403610b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffd7a341de0 R14: 00007f27a4d54620 R15: 0000000000000003
 </TASK>
INFO: task syz-executor:5903 blocked for more than 144 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:22344 pid:5903  ppid:1      flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x15ae/0x4660 kernel/sched/core.c:6701
 schedule+0xbd/0x170 kernel/sched/core.c:6775
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6834
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0x673/0xc80 kernel/locking/mutex.c:747
 del_device_store+0xd7/0x370 drivers/net/netdevsim/bus.c:209
 kernfs_fop_write_iter+0x3a4/0x520 fs/kernfs/file.c:352
 call_write_iter include/linux/fs.h:2018 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x474/0x9a0 fs/read_write.c:584
 ksys_write+0x151/0x260 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fd46e95ea0e
RSP: 002b:00007ffeffb24318 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000055556c1db500 RCX: 00007fd46e95ea0e
RDX: 0000000000000001 RSI: 00007ffeffb243a0 RDI: 0000000000000005
RBP: 00007fd46ea3610b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffeffb243a0 R14: 00007fd46f754620 R15: 0000000000000003
 </TASK>
INFO: task syz.2.19:5939 blocked for more than 144 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.19        state:D stack:27880 pid:5939  ppid:5904   flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x15ae/0x4660 kernel/sched/core.c:6701
 schedule+0xbd/0x170 kernel/sched/core.c:6775
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6834
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0x673/0xc80 kernel/locking/mutex.c:747
 devlink_health_report+0x33f/0x920 net/devlink/health.c:625
 nsim_dev_health_break_write+0x196/0x230 drivers/net/netdevsim/health.c:216
 full_proxy_write+0x110/0x1c0 fs/debugfs/file.c:244
 vfs_write+0x299/0x9a0 fs/read_write.c:582
 ksys_write+0x151/0x260 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f3ef279e1d9
RSP: 002b:00007f3ef1dfe028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f3ef2a25fa0 RCX: 00007f3ef279e1d9
RDX: 0000000000000003 RSI: 0000200000000340 RDI: 0000000000000003
RBP: 00007f3ef2835888 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3ef2a26038 R14: 00007f3ef2a25fa0 R15: 00007fffdbbded28
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/29:
 #0: ffffffff8df320e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:334 [inline]
 #0: ffffffff8df320e0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:786 [inline]
 #0: ffffffff8df320e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x290 kernel/locking/lockdep.c:6669
5 locks held by kworker/u4:3/49:
 #0: ffff88801ae5d138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2632 [inline]
 #0: ffff88801ae5d138 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x975/0x1600 kernel/workqueue.c:2734
 #1: ffffc90000b9fd00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2632 [inline]
 #1: ffffc90000b9fd00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x975/0x1600 kernel/workqueue.c:2734
 #2: ffffffff8f1c5810 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x140/0xb00 net/core/net_namespace.c:610
 #3: ffff88802230b250 (&devlink->lock_key){+.+.}-{3:3}, at: devl_lock net/devlink/core.c:60 [inline]
 #3: ffff88802230b250 (&devlink->lock_key){+.+.}-{3:3}, at: devlink_pernet_pre_exit+0xee/0x360 net/devlink/core.c:285
 #4: ffff888073326ef0 (&sb->s_type->i_mutex_key#3/2){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:839 [inline]
 #4: ffff888073326ef0 (&sb->s_type->i_mutex_key#3/2){+.+.}-{3:3}, at: simple_recursive_removal+0x319/0x7e0 fs/libfs.c:625
2 locks held by kworker/u4:11/3514:
 #0: ffff8880b8c3c258 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:559
 #1: ffff8880b8c28a00 (psi_seq){-.-.}-{0:0}, at: psi_sched_switch kernel/sched/stats.h:189 [inline]
 #1: ffff8880b8c28a00 (psi_seq){-.-.}-{0:0}, at: __schedule+0x21d3/0x4660 kernel/sched/core.c:6696
2 locks held by getty/5534:
 #0: ffff88802e1b40a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc900032862f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x428/0x1370 drivers/tty/n_tty.c:2217
6 locks held by syz-executor/5896:
 #0: ffff888032780418 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x21e/0x9a0 fs/read_write.c:580
 #1: ffff88806001a888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1dc/0x520 fs/kernfs/file.c:343
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x236/0x520 fs/kernfs/file.c:344
 #3: ffffffff8eab8268 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd7/0x370 drivers/net/netdevsim/bus.c:209
 #4: ffff88802230a130 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1094 [inline]
 #4: ffff88802230a130 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1174 [inline]
 #4: ffff88802230a130 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa7/0x6f0 drivers/base/dd.c:1371
 #5: ffff88802230b250 (&devlink->lock_key){+.+.}-{3:3}, at: nsim_drv_remove+0x50/0x170 drivers/net/netdevsim/dev.c:1676
4 locks held by syz-executor/5900:
 #0: ffff888032780418 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x21e/0x9a0 fs/read_write.c:580
 #1: ffff88802db89888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1dc/0x520 fs/kernfs/file.c:343
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x236/0x520 fs/kernfs/file.c:344
 #3: ffffffff8eab8268 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd7/0x370 drivers/net/netdevsim/bus.c:209
4 locks held by syz-executor/5903:
 #0: ffff888032780418 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x21e/0x9a0 fs/read_write.c:580
 #1: ffff88805cc43488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1dc/0x520 fs/kernfs/file.c:343
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x236/0x520 fs/kernfs/file.c:344
 #3: ffffffff8eab8268 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd7/0x370 drivers/net/netdevsim/bus.c:209
3 locks held by syz.2.19/5939:
 #0: ffff88802229eac8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2a3/0x330 fs/file.c:1040
 #1: ffff88814266a418 (sb_writers#9){.+.+}-{0:0}, at: vfs_write+0x21e/0x9a0 fs/read_write.c:580
 #2: ffff88802230b250 (&devlink->lock_key){+.+.}-{3:3}, at: devlink_health_report+0x33f/0x920 net/devlink/health.c:625
4 locks held by syz-executor/5945:
 #0: ffff888032780418 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x21e/0x9a0 fs/read_write.c:580
 #1: ffff88802f878c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1dc/0x520 fs/kernfs/file.c:343
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x236/0x520 fs/kernfs/file.c:344
 #3: ffffffff8eab8268 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd7/0x370 drivers/net/netdevsim/bus.c:209
4 locks held by syz-executor/5966:
 #0: ffff888032780418 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x21e/0x9a0 fs/read_write.c:580
 #1: ffff88807b2c7888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1dc/0x520 fs/kernfs/file.c:343
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x236/0x520 fs/kernfs/file.c:344
 #3: ffffffff8eab8268 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd7/0x370 drivers/net/netdevsim/bus.c:209
4 locks held by syz-executor/5967:
 #0: ffff888032780418 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x21e/0x9a0 fs/read_write.c:580
 #1: ffff8880741f3c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1dc/0x520 fs/kernfs/file.c:343
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x236/0x520 fs/kernfs/file.c:344
 #3: ffffffff8eab8268 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd7/0x370 drivers/net/netdevsim/bus.c:209
4 locks held by syz-executor/5986:
 #0: ffff888032780418 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x21e/0x9a0 fs/read_write.c:580
 #1: ffff888060fa8488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1dc/0x520 fs/kernfs/file.c:343
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x236/0x520 fs/kernfs/file.c:344
 #3: ffffffff8eab8268 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd7/0x370 drivers/net/netdevsim/bus.c:209
4 locks held by syz-executor/5995:
 #0: ffff888032780418 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x21e/0x9a0 fs/read_write.c:580
 #1: ffff888026a3d488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1dc/0x520 fs/kernfs/file.c:343
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x236/0x520 fs/kernfs/file.c:344
 #3: ffffffff8eab8268 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd7/0x370 drivers/net/netdevsim/bus.c:209
4 locks held by syz-executor/6012:
 #0: ffff888032780418 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x21e/0x9a0 fs/read_write.c:580
 #1: ffff88805ec01c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1dc/0x520 fs/kernfs/file.c:343
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x236/0x520 fs/kernfs/file.c:344
 #3: ffffffff8eab8268 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd7/0x370 drivers/net/netdevsim/bus.c:209
4 locks held by syz-executor/6015:
 #0: ffff888032780418 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x21e/0x9a0 fs/read_write.c:580
 #1: ffff88805f09a088 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1dc/0x520 fs/kernfs/file.c:343
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x236/0x520 fs/kernfs/file.c:344
 #3: ffffffff8eab8268 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd7/0x370 drivers/net/netdevsim/bus.c:209
4 locks held by syz-executor/6031:
 #0: ffff888032780418 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x21e/0x9a0 fs/read_write.c:580
 #1: ffff888056517488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1dc/0x520 fs/kernfs/file.c:343
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x236/0x520 fs/kernfs/file.c:344
 #3: ffffffff8eab8268 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd7/0x370 drivers/net/netdevsim/bus.c:209
4 locks held by syz-executor/6046:
 #0: ffff888032780418 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x21e/0x9a0 fs/read_write.c:580
 #1: ffff888058da6888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1dc/0x520 fs/kernfs/file.c:343
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x236/0x520 fs/kernfs/file.c:344
 #3: ffffffff8eab8268 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd7/0x370 drivers/net/netdevsim/bus.c:209
2 locks held by dhcpcd/6062:
 #0: ffff88805c27c130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1780 [inline]
 #0: ffff88805c27c130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x33/0xd40 net/packet/af_packet.c:3288
 #1: ffffffff8df37ab8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline]
 #1: ffffffff8df37ab8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x306/0x880 kernel/rcu/tree_exp.h:1004

=============================================

NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x3a6/0x3e0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x17a/0x2f0 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
 watchdog+0xf59/0xfa0 kernel/hung_task.c:379
 kthread+0x2fa/0x390 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 34 Comm: kworker/u4:2 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:hlock_class kernel/locking/lockdep.c:223 [inline]
RIP: 0010:__lock_acquire+0x1331/0x7eb0 kernel/locking/lockdep.c:5168
Code: 00 00 74 12 48 89 df e8 5d c0 77 00 49 b8 00 00 00 00 00 fc ff df 48 83 3b 00 0f 84 af 06 00 00 48 8b 44 24 50 42 0f b6 04 00 <84> c0 0f 85 24 0d 00 00 41 8b 07 89 c3 81 e3 ff 1f 00 00 c1 e8 03
RSP: 0018:ffffc90000aaf380 EFLAGS: 00000082
RAX: 0000000000000000 RBX: ffffffff91959c20 RCX: ffffffff8168afe2
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff91ff1500
RBP: ffffc90000aaf5c8 R08: dffffc0000000000 R09: 1ffffffff23fe2a0
R10: dffffc0000000000 R11: fffffbfff23fe2a1 R12: 00000000c92e0ee2
R13: ffff8880196e9e00 R14: 00000000125f738a R15: ffff8880196ea9d0
FS:  0000000000000000(0000) GS:ffff8880b8d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000562bb2b7cc70 CR3: 000000000dd32000 CR4: 00000000003506e0
Call Trace:
 <TASK>
 lock_acquire+0x19e/0x420 kernel/locking/lockdep.c:5790
 rcu_lock_acquire include/linux/rcupdate.h:334 [inline]
 rcu_read_lock include/linux/rcupdate.h:786 [inline]
 __pte_offset_map+0x48/0x280 mm/pgtable-generic.c:287
 __pte_offset_map_lock+0x47/0x1d0 mm/pgtable-generic.c:371
 get_locked_pte include/linux/mm.h:2741 [inline]
 __text_poke+0x2a4/0xb40 arch/x86/kernel/alternative.c:2036
 text_poke arch/x86/kernel/alternative.c:2121 [inline]
 text_poke_bp_batch+0x249/0x980 arch/x86/kernel/alternative.c:2429
 text_poke_flush arch/x86/kernel/alternative.c:2623 [inline]
 text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2630
 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
 static_key_disable_cpuslocked+0xc5/0x1a0 kernel/jump_label.c:237
 static_key_disable+0x1a/0x20 kernel/jump_label.c:245
 toggle_allocation_gate+0x1cc/0x260 mm/kfence/core.c:852
 process_one_work kernel/workqueue.c:2657 [inline]
 process_scheduled_works+0xa60/0x1600 kernel/workqueue.c:2734
 worker_thread+0xa5e/0xfe0 kernel/workqueue.c:2815
 kthread+0x2fa/0x390 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </TASK>

final repro crashed as (corrupted=false):
INFO: task kworker/u4:3:49 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:3    state:D stack:23752 pid:49    ppid:2      flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x15ae/0x4660 kernel/sched/core.c:6701
 schedule+0xbd/0x170 kernel/sched/core.c:6775
 schedule_timeout+0xc1/0x2d0 kernel/time/timer.c:2144
 do_wait_for_common kernel/sched/completion.c:95 [inline]
 __wait_for_common kernel/sched/completion.c:116 [inline]
 wait_for_common kernel/sched/completion.c:127 [inline]
 wait_for_completion+0x2c6/0x5a0 kernel/sched/completion.c:148
 __debugfs_file_removed fs/debugfs/inode.c:748 [inline]
 remove_one+0xe8/0x130 fs/debugfs/inode.c:754
 simple_recursive_removal+0x613/0x7e0 fs/libfs.c:633
 debugfs_remove+0x56/0x70 fs/debugfs/inode.c:777
 nsim_dev_health_exit+0x41/0xc0 drivers/net/netdevsim/health.c:281
 nsim_dev_reload_destroy+0x2ba/0x480 drivers/net/netdevsim/dev.c:1665
 nsim_dev_reload_down+0x8a/0xc0 drivers/net/netdevsim/dev.c:968
 devlink_reload+0x150/0x600 net/devlink/dev.c:389
 devlink_pernet_pre_exit+0x197/0x360 net/devlink/core.c:288
 ops_pre_exit_list net/core/net_namespace.c:163 [inline]
 cleanup_net+0x581/0xb00 net/core/net_namespace.c:636
 process_one_work kernel/workqueue.c:2657 [inline]
 process_scheduled_works+0xa60/0x1600 kernel/workqueue.c:2734
 worker_thread+0xa5e/0xfe0 kernel/workqueue.c:2815
 kthread+0x2fa/0x390 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </TASK>
INFO: task syz-executor:5896 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:21576 pid:5896  ppid:1      flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x15ae/0x4660 kernel/sched/core.c:6701
 schedule+0xbd/0x170 kernel/sched/core.c:6775
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6834
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0x673/0xc80 kernel/locking/mutex.c:747
 nsim_drv_remove+0x50/0x170 drivers/net/netdevsim/dev.c:1676
 device_remove drivers/base/dd.c:626 [inline]
 __device_release_driver drivers/base/dd.c:1351 [inline]
 device_release_driver_internal+0x408/0x6f0 drivers/base/dd.c:1374
 bus_remove_device+0x43b/0x520 drivers/base/bus.c:624
 device_del+0x51f/0x910 drivers/base/core.c:3956
 device_unregister+0x20/0xc0 drivers/base/core.c:3997
 nsim_bus_dev_del drivers/net/netdevsim/bus.c:310 [inline]
 del_device_store+0x2b6/0x370 drivers/net/netdevsim/bus.c:219
 kernfs_fop_write_iter+0x3a4/0x520 fs/kernfs/file.c:352
 call_write_iter include/linux/fs.h:2018 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x474/0x9a0 fs/read_write.c:584
 ksys_write+0x151/0x260 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fc9e315ea0e
RSP: 002b:00007ffdb346cc38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000055556f0f4500 RCX: 00007fc9e315ea0e
RDX: 0000000000000001 RSI: 00007ffdb346ccc0 RDI: 0000000000000005
RBP: 00007fc9e323610b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffdb346ccc0 R14: 00007fc9e3f54620 R15: 0000000000000003
 </TASK>
INFO: task syz-executor:5900 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:22040 pid:5900  ppid:1      flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x15ae/0x4660 kernel/sched/core.c:6701
 schedule+0xbd/0x170 kernel/sched/core.c:6775
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6834
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0x673/0xc80 kernel/locking/mutex.c:747
 del_device_store+0xd7/0x370 drivers/net/netdevsim/bus.c:209
 kernfs_fop_write_iter+0x3a4/0x520 fs/kernfs/file.c:352
 call_write_iter include/linux/fs.h:2018 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x474/0x9a0 fs/read_write.c:584
 ksys_write+0x151/0x260 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f27a3f5ea0e
RSP: 002b:00007ffd7a341d58 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000555594f2c500 RCX: 00007f27a3f5ea0e
RDX: 0000000000000001 RSI: 00007ffd7a341de0 RDI: 0000000000000005
RBP: 00007f27a403610b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffd7a341de0 R14: 00007f27a4d54620 R15: 0000000000000003
 </TASK>
INFO: task syz-executor:5903 blocked for more than 144 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:22344 pid:5903  ppid:1      flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x15ae/0x4660 kernel/sched/core.c:6701
 schedule+0xbd/0x170 kernel/sched/core.c:6775
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6834
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0x673/0xc80 kernel/locking/mutex.c:747
 del_device_store+0xd7/0x370 drivers/net/netdevsim/bus.c:209
 kernfs_fop_write_iter+0x3a4/0x520 fs/kernfs/file.c:352
 call_write_iter include/linux/fs.h:2018 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x474/0x9a0 fs/read_write.c:584
 ksys_write+0x151/0x260 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fd46e95ea0e
RSP: 002b:00007ffeffb24318 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000055556c1db500 RCX: 00007fd46e95ea0e
RDX: 0000000000000001 RSI: 00007ffeffb243a0 RDI: 0000000000000005
RBP: 00007fd46ea3610b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffeffb243a0 R14: 00007fd46f754620 R15: 0000000000000003
 </TASK>
INFO: task syz.2.19:5939 blocked for more than 144 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.19        state:D stack:27880 pid:5939  ppid:5904   flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x15ae/0x4660 kernel/sched/core.c:6701
 schedule+0xbd/0x170 kernel/sched/core.c:6775
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6834
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0x673/0xc80 kernel/locking/mutex.c:747
 devlink_health_report+0x33f/0x920 net/devlink/health.c:625
 nsim_dev_health_break_write+0x196/0x230 drivers/net/netdevsim/health.c:216
 full_proxy_write+0x110/0x1c0 fs/debugfs/file.c:244
 vfs_write+0x299/0x9a0 fs/read_write.c:582
 ksys_write+0x151/0x260 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f3ef279e1d9
RSP: 002b:00007f3ef1dfe028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f3ef2a25fa0 RCX: 00007f3ef279e1d9
RDX: 0000000000000003 RSI: 0000200000000340 RDI: 0000000000000003
RBP: 00007f3ef2835888 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3ef2a26038 R14: 00007f3ef2a25fa0 R15: 00007fffdbbded28
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/29:
 #0: ffffffff8df320e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:334 [inline]
 #0: ffffffff8df320e0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:786 [inline]
 #0: ffffffff8df320e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x290 kernel/locking/lockdep.c:6669
5 locks held by kworker/u4:3/49:
 #0: ffff88801ae5d138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2632 [inline]
 #0: ffff88801ae5d138 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x975/0x1600 kernel/workqueue.c:2734
 #1: ffffc90000b9fd00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2632 [inline]
 #1: ffffc90000b9fd00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x975/0x1600 kernel/workqueue.c:2734
 #2: ffffffff8f1c5810 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x140/0xb00 net/core/net_namespace.c:610
 #3: ffff88802230b250 (&devlink->lock_key){+.+.}-{3:3}, at: devl_lock net/devlink/core.c:60 [inline]
 #3: ffff88802230b250 (&devlink->lock_key){+.+.}-{3:3}, at: devlink_pernet_pre_exit+0xee/0x360 net/devlink/core.c:285
 #4: ffff888073326ef0 (&sb->s_type->i_mutex_key#3/2){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:839 [inline]
 #4: ffff888073326ef0 (&sb->s_type->i_mutex_key#3/2){+.+.}-{3:3}, at: simple_recursive_removal+0x319/0x7e0 fs/libfs.c:625
2 locks held by kworker/u4:11/3514:
 #0: ffff8880b8c3c258 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:559
 #1: ffff8880b8c28a00 (psi_seq){-.-.}-{0:0}, at: psi_sched_switch kernel/sched/stats.h:189 [inline]
 #1: ffff8880b8c28a00 (psi_seq){-.-.}-{0:0}, at: __schedule+0x21d3/0x4660 kernel/sched/core.c:6696
2 locks held by getty/5534:
 #0: ffff88802e1b40a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc900032862f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x428/0x1370 drivers/tty/n_tty.c:2217
6 locks held by syz-executor/5896:
 #0: ffff888032780418 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x21e/0x9a0 fs/read_write.c:580
 #1: ffff88806001a888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1dc/0x520 fs/kernfs/file.c:343
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x236/0x520 fs/kernfs/file.c:344
 #3: ffffffff8eab8268 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd7/0x370 drivers/net/netdevsim/bus.c:209
 #4: ffff88802230a130 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1094 [inline]
 #4: ffff88802230a130 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1174 [inline]
 #4: ffff88802230a130 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa7/0x6f0 drivers/base/dd.c:1371
 #5: ffff88802230b250 (&devlink->lock_key){+.+.}-{3:3}, at: nsim_drv_remove+0x50/0x170 drivers/net/netdevsim/dev.c:1676
4 locks held by syz-executor/5900:
 #0: ffff888032780418 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x21e/0x9a0 fs/read_write.c:580
 #1: ffff88802db89888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1dc/0x520 fs/kernfs/file.c:343
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x236/0x520 fs/kernfs/file.c:344
 #3: ffffffff8eab8268 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd7/0x370 drivers/net/netdevsim/bus.c:209
4 locks held by syz-executor/5903:
 #0: ffff888032780418 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x21e/0x9a0 fs/read_write.c:580
 #1: ffff88805cc43488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1dc/0x520 fs/kernfs/file.c:343
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x236/0x520 fs/kernfs/file.c:344
 #3: ffffffff8eab8268 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd7/0x370 drivers/net/netdevsim/bus.c:209
3 locks held by syz.2.19/5939:
 #0: ffff88802229eac8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2a3/0x330 fs/file.c:1040
 #1: ffff88814266a418 (sb_writers#9){.+.+}-{0:0}, at: vfs_write+0x21e/0x9a0 fs/read_write.c:580
 #2: ffff88802230b250 (&devlink->lock_key){+.+.}-{3:3}, at: devlink_health_report+0x33f/0x920 net/devlink/health.c:625
4 locks held by syz-executor/5945:
 #0: ffff888032780418 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x21e/0x9a0 fs/read_write.c:580
 #1: ffff88802f878c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1dc/0x520 fs/kernfs/file.c:343
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x236/0x520 fs/kernfs/file.c:344
 #3: ffffffff8eab8268 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd7/0x370 drivers/net/netdevsim/bus.c:209
4 locks held by syz-executor/5966:
 #0: ffff888032780418 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x21e/0x9a0 fs/read_write.c:580
 #1: ffff88807b2c7888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1dc/0x520 fs/kernfs/file.c:343
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x236/0x520 fs/kernfs/file.c:344
 #3: ffffffff8eab8268 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd7/0x370 drivers/net/netdevsim/bus.c:209
4 locks held by syz-executor/5967:
 #0: ffff888032780418 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x21e/0x9a0 fs/read_write.c:580
 #1: ffff8880741f3c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1dc/0x520 fs/kernfs/file.c:343
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x236/0x520 fs/kernfs/file.c:344
 #3: ffffffff8eab8268 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd7/0x370 drivers/net/netdevsim/bus.c:209
4 locks held by syz-executor/5986:
 #0: ffff888032780418 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x21e/0x9a0 fs/read_write.c:580
 #1: ffff888060fa8488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1dc/0x520 fs/kernfs/file.c:343
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x236/0x520 fs/kernfs/file.c:344
 #3: ffffffff8eab8268 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd7/0x370 drivers/net/netdevsim/bus.c:209
4 locks held by syz-executor/5995:
 #0: ffff888032780418 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x21e/0x9a0 fs/read_write.c:580
 #1: ffff888026a3d488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1dc/0x520 fs/kernfs/file.c:343
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x236/0x520 fs/kernfs/file.c:344
 #3: ffffffff8eab8268 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd7/0x370 drivers/net/netdevsim/bus.c:209
4 locks held by syz-executor/6012:
 #0: ffff888032780418 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x21e/0x9a0 fs/read_write.c:580
 #1: ffff88805ec01c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1dc/0x520 fs/kernfs/file.c:343
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x236/0x520 fs/kernfs/file.c:344
 #3: ffffffff8eab8268 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd7/0x370 drivers/net/netdevsim/bus.c:209
4 locks held by syz-executor/6015:
 #0: ffff888032780418 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x21e/0x9a0 fs/read_write.c:580
 #1: ffff88805f09a088 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1dc/0x520 fs/kernfs/file.c:343
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x236/0x520 fs/kernfs/file.c:344
 #3: ffffffff8eab8268 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd7/0x370 drivers/net/netdevsim/bus.c:209
4 locks held by syz-executor/6031:
 #0: ffff888032780418 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x21e/0x9a0 fs/read_write.c:580
 #1: ffff888056517488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1dc/0x520 fs/kernfs/file.c:343
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x236/0x520 fs/kernfs/file.c:344
 #3: ffffffff8eab8268 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd7/0x370 drivers/net/netdevsim/bus.c:209
4 locks held by syz-executor/6046:
 #0: ffff888032780418 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x21e/0x9a0 fs/read_write.c:580
 #1: ffff888058da6888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1dc/0x520 fs/kernfs/file.c:343
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff888142b6a6d0 (kn->active#59){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x236/0x520 fs/kernfs/file.c:344
 #3: ffffffff8eab8268 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd7/0x370 drivers/net/netdevsim/bus.c:209
2 locks held by dhcpcd/6062:
 #0: ffff88805c27c130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1780 [inline]
 #0: ffff88805c27c130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x33/0xd40 net/packet/af_packet.c:3288
 #1: ffffffff8df37ab8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline]
 #1: ffffffff8df37ab8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x306/0x880 kernel/rcu/tree_exp.h:1004

=============================================

NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x3a6/0x3e0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x17a/0x2f0 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
 watchdog+0xf59/0xfa0 kernel/hung_task.c:379
 kthread+0x2fa/0x390 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 34 Comm: kworker/u4:2 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:hlock_class kernel/locking/lockdep.c:223 [inline]
RIP: 0010:__lock_acquire+0x1331/0x7eb0 kernel/locking/lockdep.c:5168
Code: 00 00 74 12 48 89 df e8 5d c0 77 00 49 b8 00 00 00 00 00 fc ff df 48 83 3b 00 0f 84 af 06 00 00 48 8b 44 24 50 42 0f b6 04 00 <84> c0 0f 85 24 0d 00 00 41 8b 07 89 c3 81 e3 ff 1f 00 00 c1 e8 03
RSP: 0018:ffffc90000aaf380 EFLAGS: 00000082
RAX: 0000000000000000 RBX: ffffffff91959c20 RCX: ffffffff8168afe2
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff91ff1500
RBP: ffffc90000aaf5c8 R08: dffffc0000000000 R09: 1ffffffff23fe2a0
R10: dffffc0000000000 R11: fffffbfff23fe2a1 R12: 00000000c92e0ee2
R13: ffff8880196e9e00 R14: 00000000125f738a R15: ffff8880196ea9d0
FS:  0000000000000000(0000) GS:ffff8880b8d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000562bb2b7cc70 CR3: 000000000dd32000 CR4: 00000000003506e0
Call Trace:
 <TASK>
 lock_acquire+0x19e/0x420 kernel/locking/lockdep.c:5790
 rcu_lock_acquire include/linux/rcupdate.h:334 [inline]
 rcu_read_lock include/linux/rcupdate.h:786 [inline]
 __pte_offset_map+0x48/0x280 mm/pgtable-generic.c:287
 __pte_offset_map_lock+0x47/0x1d0 mm/pgtable-generic.c:371
 get_locked_pte include/linux/mm.h:2741 [inline]
 __text_poke+0x2a4/0xb40 arch/x86/kernel/alternative.c:2036
 text_poke arch/x86/kernel/alternative.c:2121 [inline]
 text_poke_bp_batch+0x249/0x980 arch/x86/kernel/alternative.c:2429
 text_poke_flush arch/x86/kernel/alternative.c:2623 [inline]
 text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2630
 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
 static_key_disable_cpuslocked+0xc5/0x1a0 kernel/jump_label.c:237
 static_key_disable+0x1a/0x20 kernel/jump_label.c:245
 toggle_allocation_gate+0x1cc/0x260 mm/kfence/core.c:852
 process_one_work kernel/workqueue.c:2657 [inline]
 process_scheduled_works+0xa60/0x1600 kernel/workqueue.c:2734
 worker_thread+0xa5e/0xfe0 kernel/workqueue.c:2815
 kthread+0x2fa/0x390 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </TASK>