------------[ cut here ]------------
DEBUG_RWSEMS_WARN_ON(!is_rwsem_reader_owned(sem)): count = 0x0, magic = 0xffff8881acecd718, owner = 0x0, curr 0xffff8881aab3bb80, list not empty
WARNING: kernel/locking/rwsem.c:1384 at __up_read+0x6a5/0x930, CPU#1: syz.4.1888/13220
Modules linked in:
CPU: 1 UID: 0 PID: 13220 Comm: syz.4.1888 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:__up_read+0x77d/0x930
Code: 8b 49 c7 c2 40 03 ed 8b 4c 0f 44 d0 48 8b 7c 24 28 48 c7 c6 00 03 ed 8b 48 8b 54 24 18 4c 89 e9 4d 89 e0 4c 8b 4c 24 08 41 52 <67> 48 0f b9 3a 48 83 c4 08 e8 45 a4 2d 03 4c 8b 3c 24 48 8b 5c 24
RSP: 0018:ffffc9000410f858 EFLAGS: 00010246
RAX: ffffffff8bed0360 RBX: 1ffff110359d9ae4 RCX: ffff8881acecd718
RDX: 0000000000000000 RSI: ffffffff8bed0300 RDI: ffffffff905ad3f0
RBP: ffffc9000410f930 R08: 0000000000000000 R09: ffff8881aab3bb80
R10: ffffffff8bed0360 R11: ffffed10359d9ae5 R12: 0000000000000000
R13: ffff8881acecd718 R14: ffff8881acecd770 R15: ffff8881acecd720
FS:  00007fa2b5dd56c0(0000) GS:ffff8882a8f52000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000016636c000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 lookup_slow+0x5e/0x70
 link_path_walk+0xd2a/0x1910
 path_openat+0x236/0x3830
 do_file_open+0x23e/0x4a0
 do_sys_openat2+0x115/0x200
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa2b7b9e0d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fa2b5dd5028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fa2b7e26180 RCX: 00007fa2b7b9e0d9
RDX: 0000000000000001 RSI: 00002000000003c0 RDI: ffffffffffffff9c
RBP: 00007fa2b7c35024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa2b7e26218 R14: 00007fa2b7e26180 R15: 00007ffcda3979b8
 </TASK>
