WARNING: The mand mount option has been deprecated and and is ignored by this kernel. Remove the mand option from the mount to silence this warning. ======================================================= ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 1 PID: 4347 Comm: syz.0.17 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:ocfs2_dx_dir_lookup_rec+0x3a0/0x780 fs/ocfs2/dir.c:812 Code: 28 48 89 44 24 38 48 83 c3 40 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 8a cd a5 fe 4c 8b 33 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 bf 02 00 00 41 8b 1f 48 8b 7c 24 20 48 RSP: 0018:ffffc9000328f1c0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff88805b4b08b8 RCX: ffff888020b3d940 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88805b4b08a0 RBP: ffffc9000328f2d0 R08: ffffc9000328f330 R09: ffffc9000328f33c R10: 0000000000000002 R11: 0000000000000000 R12: dffffc0000000000 R13: ffffc9000328f338 R14: 0000000000000041 R15: 0000000000000000 FS: 000055556761f500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2e774b0000 CR3: 000000002a3c0000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ocfs2_dx_dir_lookup+0xd8/0x510 fs/ocfs2/dir.c:860 ocfs2_dx_dir_search fs/ocfs2/dir.c:920 [inline] ocfs2_find_entry_dx fs/ocfs2/dir.c:1034 [inline] ocfs2_find_entry+0xfb1/0x1f90 fs/ocfs2/dir.c:1071 ocfs2_find_files_on_disk+0xdb/0x2f0 fs/ocfs2/dir.c:1995 ocfs2_lookup_ino_from_name+0x4f/0xf0 fs/ocfs2/dir.c:2017 ocfs2_lookup+0x241/0x930 fs/ocfs2/namei.c:122 lookup_open fs/namei.c:3448 [inline] open_last_lookups fs/namei.c:3540 [inline] path_openat+0x1003/0x2f30 fs/namei.c:3747 do_filp_open+0x1b3/0x3e0 fs/namei.c:3777 do_sys_openat2+0x142/0x4a0 fs/open.c:1255 do_sys_open fs/open.c:1271 [inline] __do_sys_openat fs/open.c:1287 [inline] __se_sys_openat fs/open.c:1282 [inline] __x64_sys_openat+0x135/0x160 fs/open.c:1282 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f762b1d3749 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:00007ffe70e3ec98 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f762b429fa0 RCX: 00007f762b1d3749 RDX: 000000000000275a RSI: 0000200000000080 RDI: ffffffffffffff9c RBP: 00007f762b257f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f762b429fa0 R14: 00007f762b429fa0 R15: 0000000000000004 Modules linked in: ---[ end trace 71c2df7bda05e695 ]--- RIP: 0010:ocfs2_dx_dir_lookup_rec+0x3a0/0x780 fs/ocfs2/dir.c:812 Code: 28 48 89 44 24 38 48 83 c3 40 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 8a cd a5 fe 4c 8b 33 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 bf 02 00 00 41 8b 1f 48 8b 7c 24 20 48 RSP: 0018:ffffc9000328f1c0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff88805b4b08b8 RCX: ffff888020b3d940 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88805b4b08a0 RBP: ffffc9000328f2d0 R08: ffffc9000328f330 R09: ffffc9000328f33c R10: 0000000000000002 R11: 0000000000000000 R12: dffffc0000000000 R13: ffffc9000328f338 R14: 0000000000000041 R15: 0000000000000000 FS: 000055556761f500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2e774b8000 CR3: 000000002a3c0000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 28 48 89 sub %cl,-0x77(%rax) 3: 44 24 38 rex.R and $0x38,%al 6: 48 83 c3 40 add $0x40,%rbx a: 48 89 d8 mov %rbx,%rax d: 48 c1 e8 03 shr $0x3,%rax 11: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) 16: 74 08 je 0x20 18: 48 89 df mov %rbx,%rdi 1b: e8 8a cd a5 fe call 0xfea5cdaa 20: 4c 8b 33 mov (%rbx),%r14 23: 4c 89 f8 mov %r15,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax <-- trapping instruction 2f: 84 c0 test %al,%al 31: 0f 85 bf 02 00 00 jne 0x2f6 37: 41 8b 1f mov (%r15),%ebx 3a: 48 8b 7c 24 20 mov 0x20(%rsp),%rdi 3f: 48 rex.W