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qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqwg4cCAAAAAAA+b82QlVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV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r0 = open(&(0x7f0000000180)='./bus\x00', 0x14927e, 0x0) syz_usb_connect(0x0, 0x3f, 0x0, 0x0) ioctl$FITRIM(r0, 0xc4009420, &(0x7f0000000180)={0x5, 0x10000}) (fail_nth: 46) sendmsg$nl_route_sched(0xffffffffffffffff, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000780)={0x0}}, 0x0) ioctl$BTRFS_IOC_QGROUP_CREATE(r0, 0xc400941b, &(0x7f0000000000)={0x1, 0x1400}) ioctl$LOOP_SET_STATUS64(r0, 0x4c04, 0x0) [ 86.727628][ T5323] loop0: detected capacity change from 0 to 32768 [ 86.732145][ T5323] btrfs: Deprecated parameter 'usebackuproot' [ 86.735056][ T5323] BTRFS warning: 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 86.760180][ T4666] Bluetooth: hci0: command tx timeout [ 86.825474][ T5323] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 (7:0) scanned by syz.0.0 (5323) [ 86.875915][ T5323] BTRFS info (device loop0): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf [ 86.880854][ T5323] BTRFS info (device loop0): using crc32c checksum algorithm [ 87.004176][ T5323] BTRFS info (device loop0): rebuilding free space tree [ 87.083740][ T5323] BTRFS info (device loop0): enabling ssd optimizations [ 87.086867][ T5323] BTRFS info (device loop0): using spread ssd allocation scheme [ 87.111618][ T5323] BTRFS info (device loop0): turning on flush-on-commit [ 87.114730][ T5323] BTRFS info (device loop0): enabling free space tree [ 87.117592][ T5323] BTRFS info (device loop0): force clearing of disk cache [ 87.130448][ T5323] BTRFS info (device loop0): trying to use backup root at mount time [ 87.134027][ T5323] BTRFS info (device loop0): force zlib compression, level 3 [ 87.204533][ T5323] FAULT_INJECTION: forcing a failure. [ 87.204533][ T5323] name failslab, interval 1, probability 0, space 0, times 1 [ 87.229958][ T5323] CPU: 0 UID: 0 PID: 5323 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 87.229977][ T5323] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 87.229983][ T5323] Call Trace: [ 87.229988][ T5323] [ 87.229993][ T5323] dump_stack_lvl+0xe8/0x150 [ 87.230101][ T5323] should_fail_ex+0x412/0x560 [ 87.230155][ T5323] should_failslab+0xa8/0x100 [ 87.230186][ T5323] ? alloc_extent_state+0x22/0x310 [ 87.230203][ T5323] kmem_cache_alloc_noprof+0x87/0x650 [ 87.230230][ T5323] ? __lock_acquire+0x6b5/0x2cf0 [ 87.230270][ T5323] alloc_extent_state+0x22/0x310 [ 87.230288][ T5323] set_extent_bit+0x1fb/0x1cb0 [ 87.230312][ T5323] btrfs_set_extent_bit+0x38/0x50 [ 87.230325][ T5323] btrfs_update_block_group+0x884/0xd40 [ 87.230353][ T5323] __btrfs_free_extent+0x143e/0x4350 [ 87.230412][ T5323] ? __pfx___btrfs_free_extent+0x10/0x10 [ 87.230424][ T5323] ? do_raw_read_trylock+0xa0/0xa0 [ 87.230441][ T5323] ? do_raw_spin_unlock+0x4d/0x210 [ 87.230455][ T5323] __btrfs_run_delayed_refs+0x15e7/0x4240 [ 87.230492][ T5323] ? __pfx___btrfs_run_delayed_refs+0x10/0x10 [ 87.230512][ T5323] ? check_path+0x21/0x40 [ 87.230526][ T5323] ? check_noncircular+0xda/0x150 [ 87.230545][ T5323] ? lockdep_unlock+0x5d/0xd0 [ 87.230554][ T5323] ? __lock_acquire+0x146e/0x2cf0 [ 87.230589][ T5323] btrfs_run_delayed_refs+0xe6/0x3b0 [ 87.230607][ T5323] btrfs_commit_transaction+0x29a/0x31a0 [ 87.230621][ T5323] ? kmem_cache_free+0x187/0x630 [ 87.230635][ T5323] ? btrfs_commit_transaction+0x1a2/0x31a0 [ 87.230647][ T5323] ? btrfs_ioctl_balance+0x3d3/0x610 [ 87.230660][ T5323] ? do_syscall_64+0x14d/0xf80 [ 87.230707][ T5323] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 87.230730][ T5323] ? __pfx_btrfs_commit_transaction+0x10/0x10 [ 87.230757][ T5323] ? kasan_quarantine_put+0xbb/0x1f0 [ 87.230772][ T5323] ? lockdep_hardirqs_on+0x7a/0x110 [ 87.230789][ T5323] ? kmem_cache_free+0x187/0x630 [ 87.230803][ T5323] ? insert_balance_item+0xccd/0x1610 [ 87.230821][ T5323] insert_balance_item+0xcd7/0x1610 [ 87.230835][ T5323] ? add_lock_to_list+0xc7/0x100 [ 87.230853][ T5323] ? __pfx_insert_balance_item+0x10/0x10 [ 87.230881][ T5323] ? btrfs_balance+0x4c1/0x11f0 [ 87.230899][ T5323] ? read_seqbegin+0xac/0x180 [ 87.230911][ T5323] ? btrfs_balance+0x4c1/0x11f0 [ 87.230924][ T5323] ? lockdep_hardirqs_on+0x7a/0x110 [ 87.230939][ T5323] btrfs_balance+0x7dc/0x11f0 [ 87.230967][ T5323] btrfs_ioctl_balance+0x3d3/0x610 [ 87.230980][ T5323] ? btrfs_ioctl+0xb19/0xd00 [ 87.230993][ T5323] ? __pfx_btrfs_ioctl+0x10/0x10 [ 87.231005][ T5323] __se_sys_ioctl+0xfc/0x170 [ 87.231040][ T5323] do_syscall_64+0x14d/0xf80 [ 87.231054][ T5323] ? trace_irq_disable+0x3b/0x150 [ 87.231087][ T5323] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 87.231096][ T5323] ? clear_bhb_loop+0x40/0x90 [ 87.231104][ T5323] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 87.231111][ T5323] RIP: 0033:0x7f90beb9c799 [ 87.231120][ T5323] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 87.231126][ T5323] RSP: 002b:00007f90bfae1028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 87.231136][ T5323] RAX: ffffffffffffffda RBX: 00007f90bee15fa0 RCX: 00007f90beb9c799 [ 87.231143][ T5323] RDX: 0000200000000180 RSI: 00000000c4009420 RDI: 0000000000000004 [ 87.231149][ T5323] RBP: 00007f90bfae1090 R08: 0000000000000000 R09: 0000000000000000 [ 87.231155][ T5323] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 87.231160][ T5323] R13: 00007f90bee16038 R14: 00007f90bee15fa0 R15: 00007fffeccdb288 [ 87.231179][ T5323] [ 87.439285][ T5324] BTRFS info (device loop0): scrub: started on devid 1 [ 87.483784][ T5323] BTRFS info (device loop0): balance: start -d -m [ 87.491373][ T5323] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata [ 87.497135][ T1039] ------------[ cut here ]------------ [ 87.499273][ T1039] BTRFS: Transaction aborted (error -28) [ 87.501683][ T1039] WARNING: fs/btrfs/block-group.c:4106 at btrfs_chunk_alloc+0x101d/0x15e0, CPU#0: kworker/u4:7/1039 [ 87.506146][ T1039] Modules linked in: [ 87.507911][ T1039] CPU: 0 UID: 0 PID: 1039 Comm: kworker/u4:7 Not tainted syzkaller #0 PREEMPT(full) [ 87.512300][ T1039] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 87.516655][ T1039] Workqueue: events_unbound btrfs_async_reclaim_metadata_space [ 87.520007][ T1039] RIP: 0010:btrfs_chunk_alloc+0x101f/0x15e0 [ 87.522647][ T1039] Code: f7 34 b2 fd e9 6d 01 00 00 e8 0d 3f 97 fd 84 c0 74 22 e8 e4 34 b2 fd e9 5a 01 00 00 e8 da 34 b2 fd 48 8d 3d d3 e5 07 0c 89 de <67> 48 0f b9 3a e9 b3 fc ff ff e8 72 e1 9b 07 41 89 c6 31 ff 89 c6 [ 87.531213][ T1039] RSP: 0018:ffffc900053f76f0 EFLAGS: 00010293 [ 87.533768][ T1039] RAX: ffffffff84136676 RBX: ffffffffffffffe4 RCX: ffff888036500000 [ 87.537424][ T1039] RDX: 0000000000000000 RSI: 00000000ffffffe4 RDI: ffffffff901b4c50 [ 87.541244][ T1039] RBP: 0000000000000000 R08: ffff888036500000 R09: 0000000000000003 [ 87.545086][ T1039] R10: 00000000fffffffb R11: 0000000000000000 R12: 1ffff1100249a616 [ 87.548978][ T1039] R13: ffff888047e91628 R14: ffff888037c8c001 R15: ffff888037f8a000 [ 87.552667][ T1039] FS: 0000000000000000(0000) GS:ffff88808ca59000(0000) knlGS:0000000000000000 [ 87.556561][ T1039] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 87.559449][ T1039] CR2: 00007efcc878e340 CR3: 0000000012e56000 CR4: 0000000000352ef0 [ 87.563182][ T1039] Call Trace: [ 87.564731][ T1039] [ 87.566075][ T1039] flush_space+0x353/0xd80 [ 87.568015][ T1039] ? do_raw_spin_unlock+0x4d/0x210 [ 87.570356][ T1039] ? _raw_spin_unlock+0x28/0x50 [ 87.572695][ T1039] ? __pfx_flush_space+0x10/0x10 [ 87.575099][ T1039] ? do_raw_spin_unlock+0x4d/0x210 [ 87.577478][ T1039] do_async_reclaim_metadata_space+0x3fc/0x960 [ 87.580644][ T1039] btrfs_async_reclaim_metadata_space+0x89/0xe0 [ 87.583574][ T1039] ? process_scheduled_works+0xa25/0x1830 [ 87.586213][ T1039] process_scheduled_works+0xb02/0x1830 [ 87.588691][ T1039] ? __pfx_process_scheduled_works+0x10/0x10 [ 87.591377][ T1039] ? assign_work+0x3d5/0x5e0 [ 87.593386][ T1039] worker_thread+0xa50/0xfc0 [ 87.595486][ T1039] kthread+0x388/0x470 [ 87.597325][ T1039] ? __pfx_worker_thread+0x10/0x10 [ 87.599633][ T1039] ? __pfx_kthread+0x10/0x10 [ 87.601685][ T1039] ret_from_fork+0x51e/0xb90 [ 87.603543][ T1039] ? __pfx_ret_from_fork+0x10/0x10 [ 87.605729][ T1039] ? __switch_to+0xc7d/0x1450 [ 87.607861][ T1039] ? __pfx_kthread+0x10/0x10 [ 87.610113][ T1039] ret_from_fork_asm+0x1a/0x30 [ 87.612325][ T1039] [ 87.613681][ T1039] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 87.616753][ T1039] CPU: 0 UID: 0 PID: 1039 Comm: kworker/u4:7 Not tainted syzkaller #0 PREEMPT(full) [ 87.620823][ T1039] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 87.625493][ T1039] Workqueue: events_unbound btrfs_async_reclaim_metadata_space [ 87.628730][ T1039] Call Trace: [ 87.630121][ T1039] [ 87.631436][ T1039] vpanic+0x56c/0xa60 [ 87.633211][ T1039] ? __pfx__printk+0x10/0x10 [ 87.635261][ T1039] ? __pfx_vpanic+0x10/0x10 [ 87.637409][ T1039] ? is_bpf_text_address+0x292/0x2b0 [ 87.639804][ T1039] ? is_bpf_text_address+0x26/0x2b0 [ 87.642034][ T1039] panic+0xc5/0xd0 [ 87.643609][ T1039] ? __pfx_panic+0x10/0x10 [ 87.645427][ T1039] ? ret_from_fork_asm+0x1a/0x30 [ 87.647435][ T1039] __warn+0x315/0x4f0 [ 87.649015][ T1039] ? btrfs_chunk_alloc+0x101d/0x15e0 [ 87.651105][ T1039] ? btrfs_chunk_alloc+0x101d/0x15e0 [ 87.653226][ T1039] __report_bug+0x29a/0x540 [ 87.655019][ T1039] ? btrfs_chunk_alloc+0x101d/0x15e0 [ 87.657016][ T1039] ? __pfx___report_bug+0x10/0x10 [ 87.658977][ T1039] report_bug_entry+0x19a/0x290 [ 87.661071][ T1039] ? btrfs_chunk_alloc+0x101f/0x15e0 [ 87.663390][ T1039] ? btrfs_chunk_alloc+0x1024/0x15e0 [ 87.665671][ T1039] handle_bug+0xca/0x200 [ 87.667531][ T1039] exc_invalid_op+0x1a/0x50 [ 87.669564][ T1039] asm_exc_invalid_op+0x1a/0x20 [ 87.671737][ T1039] RIP: 0010:btrfs_chunk_alloc+0x101f/0x15e0 [ 87.674270][ T1039] Code: f7 34 b2 fd e9 6d 01 00 00 e8 0d 3f 97 fd 84 c0 74 22 e8 e4 34 b2 fd e9 5a 01 00 00 e8 da 34 b2 fd 48 8d 3d d3 e5 07 0c 89 de <67> 48 0f b9 3a e9 b3 fc ff ff e8 72 e1 9b 07 41 89 c6 31 ff 89 c6 [ 87.682510][ T1039] RSP: 0018:ffffc900053f76f0 EFLAGS: 00010293 [ 87.685176][ T1039] RAX: ffffffff84136676 RBX: ffffffffffffffe4 RCX: ffff888036500000 [ 87.688553][ T1039] RDX: 0000000000000000 RSI: 00000000ffffffe4 RDI: ffffffff901b4c50 [ 87.691975][ T1039] RBP: 0000000000000000 R08: ffff888036500000 R09: 0000000000000003 [ 87.696198][ T1039] R10: 00000000fffffffb R11: 0000000000000000 R12: 1ffff1100249a616 [ 87.700526][ T1039] R13: ffff888047e91628 R14: ffff888037c8c001 R15: ffff888037f8a000 [ 87.704781][ T1039] ? btrfs_chunk_alloc+0x1016/0x15e0 [ 87.707665][ T1039] flush_space+0x353/0xd80 [ 87.709687][ T1039] ? do_raw_spin_unlock+0x4d/0x210 [ 87.711910][ T1039] ? _raw_spin_unlock+0x28/0x50 [ 87.713923][ T1039] ? __pfx_flush_space+0x10/0x10 [ 87.716065][ T1039] ? do_raw_spin_unlock+0x4d/0x210 [ 87.718111][ T1039] do_async_reclaim_metadata_space+0x3fc/0x960 [ 87.720584][ T1039] btrfs_async_reclaim_metadata_space+0x89/0xe0 [ 87.723088][ T1039] ? process_scheduled_works+0xa25/0x1830 [ 87.725503][ T1039] process_scheduled_works+0xb02/0x1830 [ 87.727803][ T1039] ? __pfx_process_scheduled_works+0x10/0x10 [ 87.730474][ T1039] ? assign_work+0x3d5/0x5e0 [ 87.732590][ T1039] worker_thread+0xa50/0xfc0 [ 87.734631][ T1039] kthread+0x388/0x470 [ 87.736337][ T1039] ? __pfx_worker_thread+0x10/0x10 [ 87.738748][ T1039] ? __pfx_kthread+0x10/0x10 [ 87.740817][ T1039] ret_from_fork+0x51e/0xb90 [ 87.742792][ T1039] ? __pfx_ret_from_fork+0x10/0x10 [ 87.744969][ T1039] ? __switch_to+0xc7d/0x1450 [ 87.747073][ T1039] ? __pfx_kthread+0x10/0x10 [ 87.748950][ T1039] ret_from_fork_asm+0x1a/0x30 [ 87.750920][ T1039] [ 87.752614][ T1039] Kernel Offset: disabled [ 87.754506][ T1039] Rebooting in 86400 seconds..