option from the mount to silence this warning. ======================================================= ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. ------------[ cut here ]------------ kernel BUG at fs/ocfs2/uptodate.c:509! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5471 Comm: syz.0.16 Not tainted 6.16.0-rc4-syzkaller-00286-gc435a4f487e8 #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_set_new_buffer_uptodate+0x149/0x170 fs/ocfs2/uptodate.c:509 Code: 80 3c 20 00 74 08 4c 89 f7 e8 93 8a 76 fe 4d 8b 1e 48 89 df 5b 41 5c 41 5d 41 5e 41 5f 5d 41 ff e3 cc 66 90 e8 a8 07 13 fe 90 <0f> 0b e8 a0 07 13 fe 90 0f 0b e8 98 07 13 fe 90 0f 0b e8 90 07 13 RSP: 0018:ffffc9000289fa28 EFLAGS: 00010293 RAX: ffffffff83ad56f8 RBX: ffff888045370830 RCX: ffff88801f63c880 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000001 R08: ffffffff8fa1e7f7 R09: 1ffffffff1f43cfe R10: dffffc0000000000 R11: fffffbfff1f43cff R12: ffffc9000289fd70 R13: ffff888045374fb8 R14: ffff8880452d32b8 R15: dffffc0000000000 FS: 000055558ad59500(0000) GS:ffff88808d21c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2fb5ffff CR3: 00000000401d8000 CR4: 0000000000352ef0 Call Trace: ocfs2_group_add+0x317/0x1240 fs/ocfs2/resize.c:507 ocfs2_ioctl+0x609/0x750 fs/ocfs2/ioctl.c:891 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:893 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: 0033:0x7f0024f8e929 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:00007fffff5153f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f00251b5fa0 RCX: 00007f0024f8e929 RDX: 00002000000000c0 RSI: 0000000040186f02 RDI: 0000000000000004 RBP: 00007f0025010b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f00251b5fa0 R14: 00007f00251b5fa0 R15: 0000000000000003 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ocfs2_set_new_buffer_uptodate+0x149/0x170 fs/ocfs2/uptodate.c:509 Code: 80 3c 20 00 74 08 4c 89 f7 e8 93 8a 76 fe 4d 8b 1e 48 89 df 5b 41 5c 41 5d 41 5e 41 5f 5d 41 ff e3 cc 66 90 e8 a8 07 13 fe 90 <0f> 0b e8 a0 07 13 fe 90 0f 0b e8 98 07 13 fe 90 0f 0b e8 90 07 13 RSP: 0018:ffffc9000289fa28 EFLAGS: 00010293 RAX: ffffffff83ad56f8 RBX: ffff888045370830 RCX: ffff88801f63c880 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000001 R08: ffffffff8fa1e7f7 R09: 1ffffffff1f43cfe R10: dffffc0000000000 R11: fffffbfff1f43cff R12: ffffc9000289fd70 R13: ffff888045374fb8 R14: ffff8880452d32b8 R15: dffffc0000000000 FS: 000055558ad59500(0000) GS:ffff88808d21c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2fb5ffff CR3: 00000000401d8000 CR4: 0000000000352ef0