syzbot

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kernel BUG at fs/ocfs2/alloc.c:6010!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 4299 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:__ocfs2_flush_truncate_log+0xf37/0x1060 fs/ocfs2/alloc.c:6010
Code: 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 23 fc ff ff 4c 89 f7 e8 6a b4 aa fe e9 16 fc ff ff e8 f0 4b 66 fe 0f 0b e8 e9 4b 66 fe <0f> 0b 65 8b 1d e8 96 f0 7c bf 07 00 00 00 89 de e8 34 4f 66 fe 83
RSP: 0018:ffffc900030cfa40 EFLAGS: 00010293
RAX: ffffffff83117e67 RBX: ffff8880789fda00 RCX: ffff888020720000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900030cfc58 R08: dffffc0000000000 R09: fffff52000619f31
R10: fffff52000619f31 R11: 1ffff92000619f30 R12: 0000000000000001
R13: ffff88805c5c3338 R14: ffff888076068000 R15: ffff88805c9e1c00
FS:  0000555569426500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f62aaea1000 CR3: 000000007ec1a000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ocfs2_flush_truncate_log+0x4b/0x60 fs/ocfs2/alloc.c:6075
 ocfs2_sync_fs+0x113/0x310 fs/ocfs2/super.c:403
 sync_filesystem+0x1be/0x220 fs/sync.c:66
 generic_shutdown_super+0x6b/0x300 fs/super.c:448
 kill_block_super+0x7c/0xe0 fs/super.c:1427
 deactivate_locked_super+0x93/0xf0 fs/super.c:335
 cleanup_mnt+0x418/0x4d0 fs/namespace.c:1139
 task_work_run+0x125/0x1a0 kernel/task_work.c:188
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop+0x10f/0x130 kernel/entry/common.c:181
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f00f6b432f7
Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffcac9b3f48 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f00f6bc4d7d RCX: 00007f00f6b432f7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffcac9b4000
RBP: 00007ffcac9b4000 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffcac9b5090
R13: 00007f00f6bc4d7d R14: 0000000000014113 R15: 00007ffcac9b50d0
 </TASK>
Modules linked in:
---[ end trace 9eeb47d901ffa702 ]---
RIP: 0010:__ocfs2_flush_truncate_log+0xf37/0x1060 fs/ocfs2/alloc.c:6010
Code: 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 23 fc ff ff 4c 89 f7 e8 6a b4 aa fe e9 16 fc ff ff e8 f0 4b 66 fe 0f 0b e8 e9 4b 66 fe <0f> 0b 65 8b 1d e8 96 f0 7c bf 07 00 00 00 89 de e8 34 4f 66 fe 83
RSP: 0018:ffffc900030cfa40 EFLAGS: 00010293
RAX: ffffffff83117e67 RBX: ffff8880789fda00 RCX: ffff888020720000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900030cfc58 R08: dffffc0000000000 R09: fffff52000619f31
R10: fffff52000619f31 R11: 1ffff92000619f30 R12: 0000000000000001
R13: ffff88805c5c3338 R14: ffff888076068000 R15: ffff88805c9e1c00
FS:  0000555569426500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f62aaea1000 CR3: 000000007ec1a000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400