WARNING: locking bug in vfs

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-4.14	WARNING: locking bug in vfs_write	syz		error	1	996d	1357d	0/1	upstream: reported syz repro on 2021/04/03 20:33

linux-4.14

syz

error

996d

1357d

0/1

upstream: reported syz repro on 2021/04/03 20:33


Created	Duration	User	Repo	Result
2021/11/01 12:49	16m	bisect fix	linux-4.19.y	error job log
2021/10/02 12:07	34m	bisect fix	linux-4.19.y	OK (0) job log log
2021/09/02 11:25	41m	bisect fix	linux-4.19.y	OK (0) job log log
2021/08/03 10:46	39m	bisect fix	linux-4.19.y	OK (0) job log log
2021/07/04 10:12	34m	bisect fix	linux-4.19.y	OK (0) job log log
2021/06/04 09:29	42m	bisect fix	linux-4.19.y	OK (0) job log log
2021/05/05 08:52	30m	bisect fix	linux-4.19.y	OK (0) job log log

wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready ------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(depth <= 0) WARNING: CPU: 1 PID: 9979 at kernel/locking/lockdep.c:3669 __lock_release kernel/locking/lockdep.c:3669 [inline] WARNING: CPU: 1 PID: 9979 at kernel/locking/lockdep.c:3669 lock_release+0x759/0x8b0 kernel/locking/lockdep.c:3926 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 9979 Comm: syz-executor.0 Not tainted 4.19.184-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 panic+0x26a/0x50e kernel/panic.c:186 __warn.cold+0x20/0x5a kernel/panic.c:541 report_bug+0x262/0x2b0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:178 [inline] fixup_bug arch/x86/kernel/traps.c:173 [inline] do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038 RIP: 0010:__lock_release kernel/locking/lockdep.c:3669 [inline] RIP: 0010:lock_release+0x759/0x8b0 kernel/locking/lockdep.c:3926 Code: e9 3f fd ff ff e8 67 5f 05 00 85 c0 0f 85 93 fe ff ff e9 cb b9 a6 06 48 c7 c6 00 4b 6a 88 48 c7 c7 40 19 6a 88 e8 87 1b a6 06 <0f> 0b eb 82 48 89 df e8 4b ee 4c 00 e9 90 fd ff ff e8 41 ee 4c 00 RSP: 0018:ffff88809bbf7d88 EFLAGS: 00010082 RAX: 0000000000000000 RBX: ffffffff8d241760 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff814ddd51 RDI: ffffed101377efa3 RBP: ffff888096b48710 R08: 0000000000000000 R09: 00000000000009dd R10: 0000000000000006 R11: ffffffff8c66305b R12: 1ffff1101377efb4 R13: ffffffff81a27a97 R14: ffff888099798000 R15: 0000000000000000 file_end_write include/linux/fs.h:2793 [inline] vfs_write+0x3d7/0x540 fs/read_write.c:555 ksys_write+0x12b/0x2a0 fs/read_write.c:599 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x466459 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fd04bd58188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 000000000056c0b0 RCX: 0000000000466459 RDX: 0000000020104000 RSI: 0000000020004200 RDI: 0000000000000004 RBP: 00000000004bf9fb R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c0b0 R13: 00007fff78b0654f R14: 00007fd04bd58300 R15: 0000000000022000 Kernel Offset: disabled Rebooting in 86400 seconds..