syzbot


WARNING in ocfs2_trim_fs_lock_res_init

Status: upstream: reported on 2024/10/19 05:01
Reported-by: syzbot+ad0720f495af44b83254@syzkaller.appspotmail.com
First crash: 3d16h, last: 3d16h

Sample crash report:
ocfs2: Readonly device (7,4) detected. Cluster services will not be used for this mount. Recovery will be skipped.
ocfs2: Mounting device (7,4) on (node local, slot 65535) with ordered data mode.
------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(lock->magic != lock)
WARNING: CPU: 1 PID: 6794 at kernel/locking/mutex.c:575 __mutex_lock_common+0x1a52/0x25a0 kernel/locking/mutex.c:575
Modules linked in:
CPU: 1 PID: 6794 Comm: syz.4.758 Not tainted 5.15.168-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:__mutex_lock_common+0x1a52/0x25a0 kernel/locking/mutex.c:575
Code: 04 08 84 c0 0f 85 d9 08 00 00 83 3d ef a1 ac 03 00 0f 85 e9 e6 ff ff 48 c7 c7 80 19 8b 8a 48 c7 c6 c0 19 8b 8a e8 be 17 0f f7 <0f> 0b e9 cf e6 ff ff e8 e2 94 c3 f6 e9 58 fb ff ff 0f 0b e9 d1 f0
RSP: 0018:ffffc900025377c0 EFLAGS: 00010246
RAX: 6392eab882f80200 RBX: dffffc0000000000 RCX: 0000000000040000
RDX: ffffc9000368a000 RSI: 0000000000002951 RDI: 0000000000002952
RBP: ffffc90002537928 R08: ffffffff81669a2c R09: ffffed1017224f24
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: ffff88807a860cd0 R14: 0000000000000000 R15: 0000000000000000
FS:  00007faa54ff56c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f50def52f98 CR3: 00000000789d8000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __mutex_lock kernel/locking/mutex.c:729 [inline]
 mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
 ocfs2_trim_fs_lock_res_init+0x31/0x4c0 fs/ocfs2/dlmglue.c:702
 ocfs2_trim_fs+0x138/0x2830 fs/ocfs2/alloc.c:7648
 ocfs2_ioctl+0x72c/0x7d0 fs/ocfs2/ioctl.c:921
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl+0xf1/0x160 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7faa56b7cff9
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007faa54ff5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007faa56d34f80 RCX: 00007faa56b7cff9
RDX: 0000000020000000 RSI: 00000000c0185879 RDI: 0000000000000004
RBP: 00007faa56bef296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007faa56d34f80 R15: 00007ffd1123fdc8
 </TASK>

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/10/19 05:00 linux-5.15.y 584a40a22cb9 cd6fc0a3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in ocfs2_trim_fs_lock_res_init
2024/10/19 05:00 linux-5.15.y 584a40a22cb9 cd6fc0a3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in ocfs2_trim_fs_lock_res_init
* Struck through repros no longer work on HEAD.