------------[ cut here ]------------ kernel BUG at fs/ocfs2/journal.c:1001! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 5589 Comm: syz-executor Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 RIP: 0010:ocfs2_journal_toggle_dirty+0x34a/0x350 fs/ocfs2/journal.c:1001 Code: fe ff ff e8 c8 09 e7 06 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 3f fe ff ff 48 89 df e8 40 c4 8c fe e9 32 fe ff ff e8 26 b9 3b fe <0f> 0b 0f 1f 40 00 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 RSP: 0018:ffffc900048c7a60 EFLAGS: 00010293 RAX: ffffffff8346bb6a RBX: 00000000ffffffff RCX: ffff888054859dc0 RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 RBP: ffffc900048c7b10 R08: ffffffff90af7417 R09: 1ffffffff215ee82 R10: dffffc0000000000 R11: fffffbfff215ee83 R12: 1ffff1100e433c5c R13: ffff888068f3aa00 R14: ffff88807da50c00 R15: ffff88807219e2e0 FS: 000055557f042500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f53e014d000 CR3: 00000000617a0000 CR4: 00000000003506f0 Call Trace: ocfs2_journal_shutdown+0x56c/0xc20 fs/ocfs2/journal.c:1083 ocfs2_dismount_volume+0x3f4/0x940 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+0x42c/0x4b0 fs/namespace.c:1191 task_work_run+0x1d0/0x260 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:82 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f723679da57 Code: a2 c7 05 9c fc 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:00007ffd95037c58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 00007f7236832048 RCX: 00007f723679da57 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd95037d10 RBP: 00007ffd95037d10 R08: 00007ffd95038d10 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd95038da0 R13: 00007f7236832048 R14: 0000000000030a34 R15: 00007ffd95038de0 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ocfs2_journal_toggle_dirty+0x34a/0x350 fs/ocfs2/journal.c:1001 Code: fe ff ff e8 c8 09 e7 06 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 3f fe ff ff 48 89 df e8 40 c4 8c fe e9 32 fe ff ff e8 26 b9 3b fe <0f> 0b 0f 1f 40 00 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 RSP: 0018:ffffc900048c7a60 EFLAGS: 00010293 RAX: ffffffff8346bb6a RBX: 00000000ffffffff RCX: ffff888054859dc0 RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 RBP: ffffc900048c7b10 R08: ffffffff90af7417 R09: 1ffffffff215ee82 R10: dffffc0000000000 R11: fffffbfff215ee83 R12: 1ffff1100e433c5c R13: ffff888068f3aa00 R14: ffff88807da50c00 R15: ffff88807219e2e0 FS: 000055557f042500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000560475377000 CR3: 00000000617a0000 CR4: 00000000003506f0