------------[ cut here ]------------ kernel BUG at fs/ocfs2/alloc.c:6010! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 4190 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 5a a7 aa fe e9 16 fc ff ff e8 d0 3e 66 fe 0f 0b e8 c9 3e 66 fe <0f> 0b 65 8b 1d 08 88 f0 7c bf 07 00 00 00 89 de e8 14 42 66 fe 83 RSP: 0018:ffffc90002f2fa40 EFLAGS: 00010293 RAX: ffffffff83118d47 RBX: ffff888058a1ea00 RCX: ffff8880779f9dc0 RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 RBP: ffffc90002f2fc58 R08: dffffc0000000000 R09: fffff520005e5f31 R10: fffff520005e5f31 R11: 1ffff920005e5f30 R12: 00000000ffffffff R13: ffff8880605e3338 R14: ffff888056eb4000 R15: ffff88807d6b9c00 FS: 000055556839f500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c386780 CR3: 0000000063337000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: 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:1148 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: 0033:0x7f0c11a9da77 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:00007fffd6333828 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 00007f0c11b20d7d RCX: 00007f0c11a9da77 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffd63338e0 RBP: 00007fffd63338e0 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fffd6334970 R13: 00007f0c11b20d7d R14: 000000000001613e R15: 00007fffd63349b0 Modules linked in: ---[ end trace dfa0063c7640e89f ]--- 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 5a a7 aa fe e9 16 fc ff ff e8 d0 3e 66 fe 0f 0b e8 c9 3e 66 fe <0f> 0b 65 8b 1d 08 88 f0 7c bf 07 00 00 00 89 de e8 14 42 66 fe 83 RSP: 0018:ffffc90002f2fa40 EFLAGS: 00010293 RAX: ffffffff83118d47 RBX: ffff888058a1ea00 RCX: ffff8880779f9dc0 RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 RBP: ffffc90002f2fc58 R08: dffffc0000000000 R09: fffff520005e5f31 R10: fffff520005e5f31 R11: 1ffff920005e5f30 R12: 00000000ffffffff R13: ffff8880605e3338 R14: ffff888056eb4000 R15: ffff88807d6b9c00 FS: 000055556839f500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f83f526ead8 CR3: 0000000063337000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400