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DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff8881193442b0, owner = 0x0, curr 0xffff88817056bb00, list not empty
WARNING: kernel/locking/rwsem.c:1411 at up_write+0x2d4/0x410, CPU#1: syz.3.129/6704
Modules linked in:
CPU: 1 UID: 0 PID: 6704 Comm: syz.3.129 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_write+0x384/0x410
Code: cc 8b 49 c7 c2 80 e1 cc 8b 4c 0f 44 d0 48 8b 7c 24 08 48 c7 c6 20 e4 cc 8b 48 8b 14 24 4c 89 f1 4d 89 e0 4c 8b 4c 24 10 41 52 <67> 48 0f b9 3a 48 83 c4 08 e8 1e 73 09 03 e9 6b fd ff ff 48 c7 c1
RSP: 0018:ffffc9000751fd80 EFLAGS: 00010246
RAX: ffffffff8bcce1a0 RBX: ffff8881193442b0 RCX: ffff8881193442b0
RDX: 0000000000000000 RSI: ffffffff8bcce420 RDI: ffffffff90361c00
RBP: ffff888119344308 R08: 0000000000000000 R09: ffff88817056bb00
R10: ffffffff8bcce1a0 R11: ffffed1023268858 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff8881193442b0 R15: 1ffff11023268857
FS:  00007f2979b926c0(0000) GS:ffff8882a923d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbfb4b0cd58 CR3: 00000001128c6000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 filename_mknodat+0x458/0x660
 __se_sys_mknod+0x3a/0x150
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2978d9cdd9
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:00007f2979b92028 EFLAGS: 00000246 ORIG_RAX: 0000000000000085
RAX: ffffffffffffffda RBX: 00007f2979016090 RCX: 00007f2978d9cdd9
RDX: 0000000000000707 RSI: 0000000000000200 RDI: 0000200000000680
RBP: 00007f2978e32d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2979016128 R14: 00007f2979016090 R15: 00007fff96c5a958
 </TASK>
