------------[ cut here ]------------ kernel BUG at fs/ocfs2/journal.c:1001! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 4986 Comm: syz-executor Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:ocfs2_journal_toggle_dirty+0x334/0x340 fs/ocfs2/journal.c:1001 Code: fe ff ff e8 7e bc d0 06 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 55 fe ff ff 48 89 df e8 f6 60 91 fe e9 48 fe ff ff e8 ac 2f 41 fe <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 RSP: 0018:ffffc90003aa7a60 EFLAGS: 00010293 RAX: ffffffff833fb024 RBX: 00000000ffffffff RCX: ffff88802aaabb80 RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 RBP: ffffc90003aa7b10 R08: dffffc0000000000 R09: fffffbfff211906d R10: fffffbfff211906d R11: 1ffffffff211906c R12: 1ffff110098aa205 R13: ffff888050efb600 R14: ffff888079665400 R15: ffff88804c551028 FS: 000055557c753500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fed94be7dac CR3: 00000000507a4000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ocfs2_journal_shutdown+0x574/0xbe0 fs/ocfs2/journal.c:1083 ocfs2_dismount_volume+0x3df/0x930 fs/ocfs2/super.c:1911 generic_shutdown_super+0x130/0x340 fs/super.c:501 kill_block_super+0x7c/0xe0 fs/super.c:1470 deactivate_locked_super+0x93/0xf0 fs/super.c:332 cleanup_mnt+0x463/0x4f0 fs/namespace.c:1191 task_work_run+0x1ca/0x250 kernel/task_work.c:203 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:292 [inline] syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:303 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:87 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f6fdad90a77 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:00007fffc7ffcea8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 00007f6fdae13d7d RCX: 00007f6fdad90a77 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffc7ffcf60 RBP: 00007fffc7ffcf60 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fffc7ffdff0 R13: 00007f6fdae13d7d R14: 000000000002a92b R15: 00007fffc7ffe030 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ocfs2_journal_toggle_dirty+0x334/0x340 fs/ocfs2/journal.c:1001 Code: fe ff ff e8 7e bc d0 06 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 55 fe ff ff 48 89 df e8 f6 60 91 fe e9 48 fe ff ff e8 ac 2f 41 fe <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 RSP: 0018:ffffc90003aa7a60 EFLAGS: 00010293 RAX: ffffffff833fb024 RBX: 00000000ffffffff RCX: ffff88802aaabb80 RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 RBP: ffffc90003aa7b10 R08: dffffc0000000000 R09: fffffbfff211906d R10: fffffbfff211906d R11: 1ffffffff211906c R12: 1ffff110098aa205 R13: ffff888050efb600 R14: ffff888079665400 R15: ffff88804c551028 FS: 000055557c753500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd9c115f10 CR3: 00000000507a4000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400