------------[ cut here ]------------
DEBUG_RWSEMS_WARN_ON(!is_rwsem_reader_owned(sem)): count = 0x0, magic = 0xffff8880754dea70, owner = 0x0, curr 0xffff8880228b3a80, list empty
WARNING: CPU: 1 PID: 10556 at kernel/locking/rwsem.c:1336 __up_read+0x5ff/0x690 kernel/locking/rwsem.c:1336
Modules linked in:
CPU: 1 PID: 10556 Comm: syz-executor220 Not tainted 6.1.0-syzkaller-13822-g6feb57c2fd7c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:__up_read+0x5ff/0x690 kernel/locking/rwsem.c:1336
Code: 44 d8 48 c7 c7 00 ac ed 8a 48 c7 c6 a0 ac ed 8a 48 8b 54 24 20 4c 89 f1 4d 89 f8 4d 89 e9 31 c0 53 e8 25 5f e8 ff 48 83 c4 08 <0f> 0b 48 bb 00 00 00 00 00 fc ff df 4c 8b 6c 24 18 e9 53 fb ff ff
RSP: 0018:ffffc9000e95fa40 EFLAGS: 00010292
RAX: f854c9d3eff74f00 RBX: ffffffff8aedace0 RCX: ffff8880228b3a80
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc9000e95fb18 R08: ffffffff816f2c9d R09: fffff52001d2bf01
R10: fffff52001d2bf01 R11: 1ffff92001d2bf00 R12: ffff8880754deac8
R13: ffff8880228b3a80 R14: ffff8880754dea70 R15: 0000000000000000
FS:  00007f8e95822700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8e95822000 CR3: 0000000021501000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 inode_unlock_shared include/linux/fs.h:771 [inline]
 lookup_slow+0x5e/0x70 fs/namei.c:1703
 walk_component+0x2e1/0x410 fs/namei.c:1993
 lookup_last fs/namei.c:2450 [inline]
 path_lookupat+0x17d/0x450 fs/namei.c:2474
 filename_lookup+0x274/0x650 fs/namei.c:2503
 user_path_at_empty+0x40/0x1a0 fs/namei.c:2876
 user_path_at include/linux/namei.h:57 [inline]
 do_fchownat+0xdf/0x240 fs/open.c:761
 __do_sys_lchown fs/open.c:792 [inline]
 __se_sys_lchown fs/open.c:790 [inline]
 __x64_sys_lchown+0x81/0x90 fs/open.c:790
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f8e9da97899
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 71 15 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:00007f8e958222f8 EFLAGS: 00000246 ORIG_RAX: 000000000000005e
RAX: ffffffffffffffda RBX: 00007f8e9db3b7b0 RCX: 00007f8e9da97899
RDX: 0000000039323420 RSI: 00000000706d6174 RDI: 0000000020000140
RBP: 00007f8e9db08244 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0031656c69662f2e
R13: 3d7269647265776f R14: 0079616c7265766f R15: 00007f8e9db3b7b8
 </TASK>