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DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff88806cca4c50, owner = 0x0, curr 0xffff888017e45580, list empty
WARNING: CPU: 0 PID: 5935 at kernel/locking/rwsem.c:1317 __up_write kernel/locking/rwsem.c:1317 [inline]
WARNING: CPU: 0 PID: 5935 at kernel/locking/rwsem.c:1317 up_write+0x38f/0x470 kernel/locking/rwsem.c:1568
Modules linked in:
CPU: 0 PID: 5935 Comm: syz-executor.2 Not tainted 5.14.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
RIP: 0010:__up_write kernel/locking/rwsem.c:1317 [inline]
RIP: 0010:up_write+0x38f/0x470 kernel/locking/rwsem.c:1568
Code: c1 ea 03 80 3c 02 00 75 7b 48 8b 55 00 53 4d 89 f9 4d 89 f0 4c 89 e9 48 c7 c6 a0 54 8b 87 48 c7 c7 40 52 8b 87 e8 1f 5c a9 05 <0f> 0b 5a e9 6f fd ff ff 48 89 df e8 c1 74 5f 00 e9 ac fc ff ff 4c
RSP: 0018:ffffc900070d7db0 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffffffff878b5180 RCX: 0000000000000000
RDX: ffff888017e45580 RSI: ffffffff8150f038 RDI: fffff52000e1afa8
RBP: ffff88806cca4c50 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff81508e8e R11: 0000000000000000 R12: ffff88806cca4c58
R13: ffff88806cca4c50 R14: 0000000000000000 R15: ffff888017e45580
FS:  00007ff33d8626c0(0000) GS:ffff8880ba200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f72c663e000 CR3: 00000000737e4000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 inode_unlock include/linux/fs.h:791 [inline]
 unlock_mount fs/namespace.c:2275 [inline]
 __do_sys_pivot_root+0x11ac/0x1610 fs/namespace.c:3902
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0x80 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7ff33dd00ae9
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:00007ff33d8620c8 EFLAGS: 00000246 ORIG_RAX: 000000000000009b
RAX: ffffffffffffffda RBX: 00007ff33de20050 RCX: 00007ff33dd00ae9
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000020000000
RBP: 00007ff33dd4c47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007ff33de20050 R15: 00007fffad26d668