------------[ cut here ]------------ kernel BUG at fs/ocfs2/alloc.c:6011! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 12396 Comm: syz-executor Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:__ocfs2_flush_truncate_log+0xffb/0x1130 fs/ocfs2/alloc.c:6011 Code: ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c e5 fb ff ff 48 89 df e8 36 d7 8e fe e9 d8 fb ff ff e8 5c af 36 fe 0f 0b e8 55 af 36 fe <0f> 0b 65 44 8b 3d f7 51 b3 7c bf 07 00 00 00 44 89 fe e8 ee b2 36 RSP: 0018:ffffc900032579c0 EFLAGS: 00010293 RAX: ffffffff835063cb RBX: 1ffff9200064af4c RCX: ffff888030de5a00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90003257bd8 R08: ffffc90003257947 R09: 1ffff9200064af28 R10: dffffc0000000000 R11: fffff5200064af29 R12: 0000000000000001 R13: ffff88805c5416b8 R14: ffff88805f1c7400 R15: ffff888051c9ea00 FS: 0000555574846500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4cf33d7000 CR3: 0000000064efc000 CR4: 00000000003506e0 Call Trace: ocfs2_flush_truncate_log+0x4f/0x60 fs/ocfs2/alloc.c:6076 ocfs2_sync_fs+0x11d/0x330 fs/ocfs2/super.c:402 sync_filesystem+0x1c2/0x220 fs/sync.c:66 generic_shutdown_super+0x6f/0x2b0 fs/super.c:666 kill_block_super+0x44/0x90 fs/super.c:1660 deactivate_locked_super+0x97/0x100 fs/super.c:481 cleanup_mnt+0x43b/0x4d0 fs/namespace.c:1259 task_work_run+0x1d4/0x260 kernel/task_work.c:245 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302 do_syscall_64+0x61/0xa0 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7ff1eb59c117 Code: a2 c7 05 7c 94 24 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 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 e8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffc4b7da318 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 00007ff1eb60471f RCX: 00007ff1eb59c117 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc4b7da3d0 RBP: 00007ffc4b7da3d0 R08: 00007ffc4b7db3d0 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc4b7db460 R13: 00007ff1eb60471f R14: 000000000006a931 R15: 00007ffc4b7db4a0 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__ocfs2_flush_truncate_log+0xffb/0x1130 fs/ocfs2/alloc.c:6011 Code: ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c e5 fb ff ff 48 89 df e8 36 d7 8e fe e9 d8 fb ff ff e8 5c af 36 fe 0f 0b e8 55 af 36 fe <0f> 0b 65 44 8b 3d f7 51 b3 7c bf 07 00 00 00 44 89 fe e8 ee b2 36 RSP: 0018:ffffc900032579c0 EFLAGS: 00010293 RAX: ffffffff835063cb RBX: 1ffff9200064af4c RCX: ffff888030de5a00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90003257bd8 R08: ffffc90003257947 R09: 1ffff9200064af28 R10: dffffc0000000000 R11: fffff5200064af29 R12: 0000000000000001 R13: ffff88805c5416b8 R14: ffff88805f1c7400 R15: ffff888051c9ea00 FS: 0000555574846500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3746fe1198 CR3: 0000000064efc000 CR4: 00000000003506e0