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/suballoc.c:1441! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5090 Comm: syz-executor182 Not tainted 6.11.0-rc4-syzkaller-00033-g872cf28b8df9 #0 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_find_victim_chain fs/ocfs2/suballoc.c:1441 [inline] RIP: 0010:ocfs2_claim_suballoc_bits+0x240c/0x2570 fs/ocfs2/suballoc.c:1982 Code: 0a 12 05 fe 90 0f 0b e8 02 12 05 fe 90 0f 0b e8 fa 11 05 fe 90 0f 0b e8 f2 11 05 fe 90 0f 0b e8 4a 40 28 08 e8 e5 11 05 fe 90 <0f> 0b e8 dd 11 05 fe 90 0f 0b f3 0f 1e fa 65 8b 1d 9b 5d 75 7c bf RSP: 0018:ffffc90002c4f2e0 EFLAGS: 00010293 RAX: ffffffff838e795b RBX: 0000000000000000 RCX: ffff8880206e8000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90002c4f590 R08: ffffffff838e6445 R09: 0000000000000000 R10: ffffc90002c4f620 R11: fffff52000589ec9 R12: dffffc0000000000 R13: ffff888037b74a88 R14: ffff88803f652400 R15: 0000000000000002 FS: 0000555560f7b380(0000) GS:ffff888020800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f09a63ff000 CR3: 000000001c756000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ocfs2_claim_new_inode+0x338/0x870 fs/ocfs2/suballoc.c:2267 ocfs2_mknod_locked+0x17a/0x3b0 fs/ocfs2/namei.c:633 ocfs2_symlink+0x16da/0x2d90 fs/ocfs2/namei.c:1948 vfs_symlink+0x137/0x2e0 fs/namei.c:4568 do_symlinkat+0x222/0x3a0 fs/namei.c:4594 __do_sys_symlink fs/namei.c:4615 [inline] __se_sys_symlink fs/namei.c:4613 [inline] __x64_sys_symlink+0x7a/0x90 fs/namei.c:4613 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f09ad9f4c59 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fff62037088 EFLAGS: 00000246 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f09ad9f4c59 RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000020000040 RBP: 00007f09ada6c5f0 R08: 0000000000004448 R09: 0000555560f7c4c0 R10: 00007fff62036f50 R11: 0000000000000246 R12: 00007fff620370b0 R13: 00007fff620372d8 R14: 431bde82d7b634db R15: 00007f09ada3d03b Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ocfs2_find_victim_chain fs/ocfs2/suballoc.c:1441 [inline] RIP: 0010:ocfs2_claim_suballoc_bits+0x240c/0x2570 fs/ocfs2/suballoc.c:1982 Code: 0a 12 05 fe 90 0f 0b e8 02 12 05 fe 90 0f 0b e8 fa 11 05 fe 90 0f 0b e8 f2 11 05 fe 90 0f 0b e8 4a 40 28 08 e8 e5 11 05 fe 90 <0f> 0b e8 dd 11 05 fe 90 0f 0b f3 0f 1e fa 65 8b 1d 9b 5d 75 7c bf RSP: 0018:ffffc90002c4f2e0 EFLAGS: 00010293 RAX: ffffffff838e795b RBX: 0000000000000000 RCX: ffff8880206e8000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90002c4f590 R08: ffffffff838e6445 R09: 0000000000000000 R10: ffffc90002c4f620 R11: fffff52000589ec9 R12: dffffc0000000000 R13: ffff888037b74a88 R14: ffff88803f652400 R15: 0000000000000002 FS: 0000555560f7b380(0000) GS:ffff888020800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055898cbe5630 CR3: 000000001c756000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400