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: 5525 Comm: syz.0.17 Not tainted 6.17.0-rc1-syzkaller-00224-g8d561baae505 #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 53 0c 75 fe 4d 8b 1e 48 89 df 5b 41 5c 41 5d 41 5e 41 5f 5d 2e e9 65 6f 50 1c e8 58 24 10 fe 90 <0f> 0b e8 50 24 10 fe 90 0f 0b e8 48 24 10 fe 90 0f 0b e8 40 24 10 RSP: 0018:ffffc90002b8fa28 EFLAGS: 00010293 RAX: ffffffff83af95d8 RBX: ffff888012200830 RCX: ffff88803e35c880 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000001 R08: ffffffff8fa3a237 R09: 1ffffffff1f47446 R10: dffffc0000000000 R11: fffffbfff1f47447 R12: ffffc90002b8fd70 R13: ffff888012204fb8 R14: ffff88801200dbc8 R15: dffffc0000000000 FS: 00005555894a6500(0000) GS:ffff88808d210000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000559f2bfb1138 CR3: 0000000056c36000 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:598 [inline] __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:584 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: 0033:0x7f82b058ebe9 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:00007ffc422a7d48 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f82b07b5fa0 RCX: 00007f82b058ebe9 RDX: 00002000000000c0 RSI: 0000000040186f02 RDI: 0000000000000004 RBP: 00007f82b0611e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f82b07b5fa0 R14: 00007f82b07b5fa0 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 53 0c 75 fe 4d 8b 1e 48 89 df 5b 41 5c 41 5d 41 5e 41 5f 5d 2e e9 65 6f 50 1c e8 58 24 10 fe 90 <0f> 0b e8 50 24 10 fe 90 0f 0b e8 48 24 10 fe 90 0f 0b e8 40 24 10 RSP: 0018:ffffc90002b8fa28 EFLAGS: 00010293 RAX: ffffffff83af95d8 RBX: ffff888012200830 RCX: ffff88803e35c880 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000001 R08: ffffffff8fa3a237 R09: 1ffffffff1f47446 R10: dffffc0000000000 R11: fffffbfff1f47447 R12: ffffc90002b8fd70 R13: ffff888012204fb8 R14: ffff88801200dbc8 R15: dffffc0000000000 FS: 00005555894a6500(0000) GS:ffff88808d210000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f262d151000 CR3: 0000000056c36000 CR4: 0000000000352ef0