------------[ cut here ]------------
DEBUG_RWSEMS_WARN_ON(!is_rwsem_reader_owned(sem)): count = 0x0, magic = 0xffff8880445e94e8, owner = 0x0, curr 0xffff88803615c880, list empty
WARNING: CPU: 0 PID: 5371 at kernel/locking/rwsem.c:1354 __up_read+0x5f5/0x680 kernel/locking/rwsem.c:1354
Modules linked in:
CPU: 0 UID: 0 PID: 5371 Comm: syz.0.0 Not tainted 6.16.0-syzkaller-12256-g561c80369df0 #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:__up_read+0x5f5/0x680 kernel/locking/rwsem.c:1354
Code: 44 d0 48 c7 c7 a0 ec 8a 8b 48 c7 c6 40 ed 8a 8b 4c 89 ea 48 8b 4c 24 08 4d 89 e0 4d 89 f1 41 52 e8 10 5b e6 ff 48 83 c4 08 90 <0f> 0b 90 90 e9 72 fb ff ff 48 c7 c1 74 cf a3 8f 80 e1 07 80 c1 03
RSP: 0018:ffffc9000d367940 EFLAGS: 00010292
RAX: 2086f08b2bda5600 RBX: ffff8880445e94e8 RCX: ffff88803615c880
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002
RBP: ffffc9000d3679f8 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bfa1ec R12: 0000000000000000
R13: 0000000000000000 R14: ffff88803615c880 R15: ffff8880445e9540
FS:  00007f395141e6c0(0000) GS:ffff88808d211000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffee7925f00 CR3: 0000000043391000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 inode_unlock_shared include/linux/fs.h:894 [inline]
 lookup_slow+0x5e/0x70 fs/namei.c:1826
 walk_component fs/namei.c:2129 [inline]
 link_path_walk+0x935/0xea0 fs/namei.c:2497
 path_parentat fs/namei.c:2701 [inline]
 __filename_parentat+0x246/0x670 fs/namei.c:2725
 filename_parentat fs/namei.c:2743 [inline]
 filename_create+0xd2/0x3c0 fs/namei.c:4120
 do_mkdirat+0xa0/0x590 fs/namei.c:4391
 __do_sys_mkdirat fs/namei.c:4416 [inline]
 __se_sys_mkdirat fs/namei.c:4414 [inline]
 __x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4414
 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: 0033:0x7f395058ebe9
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:00007f395141e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f39507b6180 RCX: 00007f395058ebe9
RDX: 0000000000000000 RSI: 0000200000000240 RDI: ffffffffffffff9c
RBP: 00007f3950611e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f39507b6218 R14: 00007f39507b6180 R15: 00007ffee79268c8
 </TASK>