WARNING: CPU: 1 PID: 3285 at fs/libfs.c:2110 stashed_dentry_prune+0x27/0x30 fs/libfs.c:2110
Modules linked in:
CPU: 1 PID: 3285 Comm: syz-executor.2 Not tainted 6.8.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
RIP: 0010:stashed_dentry_prune+0x27/0x30 fs/libfs.c:2110
Code: 90 90 90 f3 0f 1e fa 48 8b 8f f8 00 00 00 48 85 c9 74 16 48 83 7f 68 00 74 0a 31 d2 48 89 f8 f0 48 0f b1 11 c3 cc cc cc cc 90 <0f> 0b 90 c3 cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc900017e7db8 EFLAGS: 00010246

RAX: ffffffff8201f980 RBX: ffff888111492c30 RCX: 0000000000000000
RDX: f002853324f3be8d RSI: ffffffff823d8e33 RDI: ffff888111492c30
RBP: ffff8881006f2620 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff813497d0 R12: fffffffffffffff4
R13: ffffffff81349586 R14: ffff888111492cc8 R15: ffffc900017e7e70
FS:  00007f1c4bfdd6c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1c4bfdcff8 CR3: 000000010f6b2000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __dentry_kill+0x2f/0x200 fs/dcache.c:594
 dput+0x75/0xe0 fs/dcache.c:845
 prepare_anon_dentry fs/libfs.c:2007 [inline]
 path_from_stashed+0x1bb/0x280 fs/libfs.c:2088
 pidfs_alloc_file+0x8d/0x110 fs/pidfs.c:227
 __pidfd_prepare kernel/fork.c:2026 [inline]
 pidfd_prepare+0x4c/0x80 kernel/fork.c:2074
 pidfd_create kernel/pid.c:614 [inline]
 __do_sys_pidfd_open kernel/pid.c:650 [inline]
 __se_sys_pidfd_open+0x54/0xe0 kernel/pid.c:635
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xe6/0x200 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f1c4c45bda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1c4bfdd0b8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b2
RAX: ffffffffffffffda RBX: 00007f1c4c589f80 RCX: 00007f1c4c45bda9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 00007f1c4bfdd120 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000006 R14: 00007f1c4c589f80 R15: 00007ffcf7e6d408
 </TASK>