option from the mount to silence this warning. ======================================================= ocfs2: Mounting device (7,0) on (node local, slot 0) with writeback data mode. ------------[ cut here ]------------ kernel BUG at fs/ocfs2/aops.c:1159! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5501 Comm: syz.0.17 Not tainted 6.16.0-syzkaller-12288-g2b38afce25c4 #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:ocfs2_write_cluster fs/ocfs2/aops.c:1159 [inline] RIP: 0010:ocfs2_write_cluster_by_desc+0x1cc1/0x1cf0 fs/ocfs2/aops.c:1219 Code: 03 48 8d bc 24 10 02 00 00 48 c7 c6 1f 9a 9f 8d ba 6a 04 00 00 48 c7 c1 80 5a ca 8b e8 c8 51 1b 00 90 0f 0b e8 30 6a 25 fe 90 <0f> 0b e8 28 6a 25 fe 90 0f 0b e8 20 6a 25 fe 90 0f 0b e8 18 6a 25 RSP: 0018:ffffc90002b1ec00 EFLAGS: 00010293 RAX: ffffffff839a5130 RBX: ffff88803397a014 RCX: ffff88803f352440 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90002b1ef30 R08: ffff8880426dc023 R09: 1ffff110084db804 R10: dffffc0000000000 R11: ffffed10084db805 R12: ffff888011960000 R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88803397a014 FS: 000055555ab07500(0000) GS:ffff88808d211000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe24f609000 CR3: 000000004df05000 CR4: 0000000000352ef0 Call Trace: ocfs2_write_begin_nolock+0x31a3/0x4340 fs/ocfs2/aops.c:1796 ocfs2_write_begin+0x1bb/0x310 fs/ocfs2/aops.c:1884 generic_perform_write+0x2c2/0x900 mm/filemap.c:4175 ocfs2_file_write_iter+0x157a/0x1d10 fs/ocfs2/file.c:2469 aio_write+0x535/0x7a0 fs/aio.c:1634 __io_submit_one fs/aio.c:-1 [inline] io_submit_one+0x78b/0x1310 fs/aio.c:2053 __do_sys_io_submit fs/aio.c:2112 [inline] __se_sys_io_submit+0x185/0x2f0 fs/aio.c:2082 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe24e78ebe9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffcd139c338 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 00007fe24e9b5fa0 RCX: 00007fe24e78ebe9 RDX: 0000200000000540 RSI: 000000000000003b RDI: 00007fe24f609000 RBP: 00007fe24e811e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fe24e9b5fa0 R14: 00007fe24e9b5fa0 R15: 0000000000000003 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ocfs2_write_cluster fs/ocfs2/aops.c:1159 [inline] RIP: 0010:ocfs2_write_cluster_by_desc+0x1cc1/0x1cf0 fs/ocfs2/aops.c:1219 Code: 03 48 8d bc 24 10 02 00 00 48 c7 c6 1f 9a 9f 8d ba 6a 04 00 00 48 c7 c1 80 5a ca 8b e8 c8 51 1b 00 90 0f 0b e8 30 6a 25 fe 90 <0f> 0b e8 28 6a 25 fe 90 0f 0b e8 20 6a 25 fe 90 0f 0b e8 18 6a 25 RSP: 0018:ffffc90002b1ec00 EFLAGS: 00010293 RAX: ffffffff839a5130 RBX: ffff88803397a014 RCX: ffff88803f352440 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90002b1ef30 R08: ffff8880426dc023 R09: 1ffff110084db804 R10: dffffc0000000000 R11: ffffed10084db805 R12: ffff888011960000 R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88803397a014 FS: 000055555ab07500(0000) GS:ffff88808d211000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe24f609000 CR3: 000000004df05000 CR4: 0000000000352ef0