------------[ cut here ]------------
kernel BUG at fs/namei.c:687!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 6658 Comm: syz.4.94 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/25/2026
RIP: 0010:lookup_inode_permission_may_exec fs/namei.c:687 [inline]
RIP: 0010:may_lookup fs/namei.c:1961 [inline]
RIP: 0010:link_path_walk+0x1904/0x1910 fs/namei.c:2604
Code: e8 b1 6a 03 00 90 0f 0b e8 49 bf 83 ff 45 89 fc e9 54 fd ff ff e8 3c bf 83 ff 4c 89 e7 48 c7 c6 80 f3 7d 8b e8 8d 6a 03 00 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000459fa20 EFLAGS: 00010246
RAX: 037889a33591f500 RBX: ffffc9000459fc58 RCX: 037889a33591f500
RDX: ffffc90015744000 RSI: 0000000000000474 RDI: 0000000000000475
RBP: 0000000000008000 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff520008b3ec1 R12: ffff888050085dc8
R13: ffffc9000459fc70 R14: 0000000000008000 R15: ffff888033203618
FS:  00007fc0b8a146c0(0000) GS:ffff888125c49000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcb79e90000 CR3: 0000000033d76000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 path_lookupat+0xe4/0x8c0 fs/namei.c:2812
 filename_lookup+0x265/0x5d0 fs/namei.c:2842
 user_path_at+0x40/0x160 fs/namei.c:3641
 do_mount fs/namespace.c:4171 [inline]
 __do_sys_mount fs/namespace.c:4390 [inline]
 __se_sys_mount+0x2dc/0x420 fs/namespace.c:4367
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc0ba7ff10a
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc0b8a13e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fc0b8a13ee0 RCX: 00007fc0ba7ff10a
RDX: 0000200000000040 RSI: 0000200000000000 RDI: 0000000000000000
RBP: 0000200000000040 R08: 00007fc0b8a13ee0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000000000
R13: 00007fc0b8a13ea0 R14: 0000000000000000 R15: 00002000000002c0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:lookup_inode_permission_may_exec fs/namei.c:687 [inline]
RIP: 0010:may_lookup fs/namei.c:1961 [inline]
RIP: 0010:link_path_walk+0x1904/0x1910 fs/namei.c:2604
Code: e8 b1 6a 03 00 90 0f 0b e8 49 bf 83 ff 45 89 fc e9 54 fd ff ff e8 3c bf 83 ff 4c 89 e7 48 c7 c6 80 f3 7d 8b e8 8d 6a 03 00 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000459fa20 EFLAGS: 00010246
RAX: 037889a33591f500 RBX: ffffc9000459fc58 RCX: 037889a33591f500
RDX: ffffc90015744000 RSI: 0000000000000474 RDI: 0000000000000475
RBP: 0000000000008000 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff520008b3ec1 R12: ffff888050085dc8
R13: ffffc9000459fc70 R14: 0000000000008000 R15: ffff888033203618
FS:  00007fc0b8a146c0(0000) GS:ffff888125c49000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcb79e90000 CR3: 0000000033d76000 CR4: 00000000003526f0