------------[ cut here ]------------ kernel BUG at fs/ocfs2/alloc.c:6011! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 1086 Comm: kworker/u4:7 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+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:ffffc900045af900 EFLAGS: 00010293 RAX: ffffffff835063cb RBX: 1ffff920008b5f34 RCX: ffff888023d25a00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc900045afb10 R08: ffffc900045af887 R09: 1ffff920008b5f10 R10: dffffc0000000000 R11: fffff520008b5f11 R12: 0000000000000001 R13: ffff88805dbdb338 R14: ffff8880260b3800 R15: ffff88802eb5aa00 FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2e5ca7f000 CR3: 0000000062007000 CR4: 00000000003506e0 Call Trace: ocfs2_flush_truncate_log fs/ocfs2/alloc.c:6076 [inline] ocfs2_truncate_log_worker+0xa3/0x1a0 fs/ocfs2/alloc.c:6089 process_one_work kernel/workqueue.c:2634 [inline] process_scheduled_works+0xa5d/0x15d0 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+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:ffffc900045af900 EFLAGS: 00010293 RAX: ffffffff835063cb RBX: 1ffff920008b5f34 RCX: ffff888023d25a00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc900045afb10 R08: ffffc900045af887 R09: 1ffff920008b5f10 R10: dffffc0000000000 R11: fffff520008b5f11 R12: 0000000000000001 R13: ffff88805dbdb338 R14: ffff8880260b3800 R15: ffff88802eb5aa00 FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005609ac8b7650 CR3: 00000000266ea000 CR4: 00000000003506f0