syzbot

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DEBUG_RWSEMS_WARN_ON(!is_rwsem_reader_owned(sem)): count = 0x1, magic = 0xffff888074d7ccf0, owner = 0xffff8880768c5940, curr 0xffff8880768c3b80, list empty
WARNING: CPU: 0 PID: 5422 at kernel/locking/rwsem.c:1343 __up_read+0x602/0x690 kernel/locking/rwsem.c:1343
Modules linked in:
CPU: 0 PID: 5422 Comm: syz-executor305 Not tainted 6.4.0-syzkaller-12316-g4f6b6c2b2f86 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
RIP: 0010:__up_read+0x602/0x690 kernel/locking/rwsem.c:1343
Code: 0a 8b 48 0f 44 c1 48 c7 c7 80 84 0a 8b 48 c7 c6 20 85 0a 8b 4c 89 fa 4c 89 f1 49 89 d8 4d 89 e9 50 e8 c2 60 e8 ff 48 83 c4 08 <0f> 0b 48 bb 00 00 00 00 00 fc ff df 4c 8b 2c 24 e9 4e fb ff ff 48
RSP: 0018:ffffc900045b7a80 EFLAGS: 00010292
RAX: 792fb47aa3b3aa00 RBX: ffff8880768c5940 RCX: ffff8880768c3b80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900045b7b38 R08: ffffffff815321f2 R09: 1ffff920008b6ec8
R10: dffffc0000000000 R11: fffff520008b6ec9 R12: ffff888074d7cd48
R13: ffff8880768c3b80 R14: ffff888074d7ccf0 R15: 0000000000000001
FS:  00007f5db83ee700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5db83ee000 CR3: 0000000020052000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 inode_unlock_shared include/linux/fs.h:786 [inline]
 lookup_slow+0x5e/0x70 fs/namei.c:1708
 walk_component+0x2d0/0x400 fs/namei.c:1998
 lookup_last fs/namei.c:2455 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2479
 filename_lookup+0x255/0x610 fs/namei.c:2508
 user_path_at_empty+0x44/0x180 fs/namei.c:2907
 user_path_at include/linux/namei.h:57 [inline]
 __do_sys_chdir fs/open.c:551 [inline]
 __se_sys_chdir+0xbf/0x220 fs/open.c:545
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f5ec4663b59
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:00007f5db83ee1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000050
RAX: ffffffffffffffda RBX: 0000000000000020 RCX: 00007f5ec4663b59
RDX: 00007f5ec4663b59 RSI: ffffffffffffffb8 RDI: 0000000020000380
RBP: 00007f5ec4707790 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5ec470779c
R13: 00007fff10c32fdf R14: 00007f5db83ee300 R15: 0000000000022000
 </TASK>