------------[ cut here ]------------ kernel BUG at fs/ocfs2/alloc.c:6012! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 42 Comm: kworker/u4:2 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Workqueue: ocfs2_wq ocfs2_truncate_log_worker RIP: 0010:__ocfs2_flush_truncate_log+0xf7e/0x10b0 fs/ocfs2/alloc.c:6012 Code: ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 28 fc ff ff 48 89 df e8 d3 36 93 fe e9 1b fc ff ff e8 59 c8 3b fe 0f 0b e8 52 c8 3b fe <0f> 0b f3 0f 1e fa 65 44 8b 35 50 ed b9 7c bf 07 00 00 00 44 89 f6 RSP: 0018:ffffc90000b2f900 EFLAGS: 00010293 RAX: ffffffff8349c86e RBX: ffff888076f18000 RCX: ffff888018a89e00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90000b2fb10 R08: ffffc90000b2f887 R09: 1ffff92000165f10 R10: dffffc0000000000 R11: fffff52000165f11 R12: 0000000000000001 R13: ffff888076b3b338 R14: ffff88805ca6fa00 R15: ffff888028380000 FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd5e86683c CR3: 000000001968a000 CR4: 00000000003506e0 Call Trace: ocfs2_flush_truncate_log fs/ocfs2/alloc.c:6077 [inline] ocfs2_truncate_log_worker+0xa3/0x190 fs/ocfs2/alloc.c:6090 process_one_work kernel/workqueue.c:2634 [inline] process_scheduled_works+0xa45/0x15b0 kernel/workqueue.c:2711 worker_thread+0xa55/0xfc0 kernel/workqueue.c:2792 kthread+0x2fa/0x390 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__ocfs2_flush_truncate_log+0xf7e/0x10b0 fs/ocfs2/alloc.c:6012 Code: ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 28 fc ff ff 48 89 df e8 d3 36 93 fe e9 1b fc ff ff e8 59 c8 3b fe 0f 0b e8 52 c8 3b fe <0f> 0b f3 0f 1e fa 65 44 8b 35 50 ed b9 7c bf 07 00 00 00 44 89 f6 RSP: 0018:ffffc90000b2f900 EFLAGS: 00010293 RAX: ffffffff8349c86e RBX: ffff888076f18000 RCX: ffff888018a89e00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90000b2fb10 R08: ffffc90000b2f887 R09: 1ffff92000165f10 R10: dffffc0000000000 R11: fffff52000165f11 R12: 0000000000000001 R13: ffff888076b3b338 R14: ffff88805ca6fa00 R15: ffff888028380000 FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffddc95dfe8 CR3: 0000000074428000 CR4: 00000000003526f0