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DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff888052eb6ad8, owner = 0x0, curr 0xffff888030100000, list empty
WARNING: kernel/locking/rwsem.c:1381 at 0x0, CPU#0: syz.3.2066/15695
Modules linked in:
CPU: 0 UID: 0 PID: 15695 Comm: syz.3.2066 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__up_write kernel/locking/rwsem.c:1380 [inline]
RIP: 0010:up_write+0x38a/0x410 kernel/locking/rwsem.c:1643
Code: 6b 8b 49 c7 c2 40 23 6b 8b 4c 0f 44 d0 48 8b 7c 24 08 48 c7 c6 60 24 6b 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 78 1f ed 02 e9 66 fd ff ff 48 c7 c1
RSP: 0018:ffffc9000b6bfc18 EFLAGS: 00010246
RAX: ffffffff8b6b2320 RBX: ffff888052eb6ad8 RCX: ffff888052eb6ad8
RDX: 0000000000000000 RSI: ffffffff8b6b2460 RDI: ffffffff8f8535f0
RBP: ffff888052eb6b30 R08: 0000000000000000 R09: ffff888030100000
R10: ffffffff8b6b2320 R11: ffffed100a5d6d5d R12: 0000000000000000
R13: dffffc0000000000 R14: ffff888052eb6ad8 R15: 1ffff1100a5d6d5c
FS:  00007eff8349f6c0(0000) GS:ffff888125e3a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001000 CR3: 00000000291a4000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 inode_unlock include/linux/fs.h:1037 [inline]
 __unlock_mount fs/namespace.c:2786 [inline]
 unlock_mount+0xbd/0x3a0 fs/namespace.c:2796
 do_new_mount_fc fs/namespace.c:3659 [inline]
 do_new_mount+0x72e/0xa10 fs/namespace.c:3712
 do_mount fs/namespace.c:4035 [inline]
 __do_sys_mount fs/namespace.c:4224 [inline]
 __se_sys_mount+0x313/0x410 fs/namespace.c:4201
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7eff8258f749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007eff8349f038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007eff827e6090 RCX: 00007eff8258f749
RDX: 0000200000000080 RSI: 00002000000000c0 RDI: 0000000000000000
RBP: 00007eff82613f91 R08: 00002000000001c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007eff827e6128 R14: 00007eff827e6090 R15: 00007ffcc0f3e778
 </TASK>
----------------
Code disassembly (best guess):
   0:	6b 8b 49 c7 c2 40 23 	imul   $0x23,0x40c2c749(%rbx),%ecx
   7:	6b 8b 4c 0f 44 d0 48 	imul   $0x48,-0x2fbbf0b4(%rbx),%ecx
   e:	8b 7c 24 08          	mov    0x8(%rsp),%edi
  12:	48 c7 c6 60 24 6b 8b 	mov    $0xffffffff8b6b2460,%rsi
  19:	48 8b 14 24          	mov    (%rsp),%rdx
  1d:	4c 89 f1             	mov    %r14,%rcx
  20:	4d 89 e0             	mov    %r12,%r8
  23:	4c 8b 4c 24 10       	mov    0x10(%rsp),%r9
  28:	41 52                	push   %r10
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	48 83 c4 08          	add    $0x8,%rsp
  33:	e8 78 1f ed 02       	call   0x2ed1fb0
  38:	e9 66 fd ff ff       	jmp    0xfffffda3
  3d:	48                   	rex.W
  3e:	c7                   	.byte 0xc7
  3f:	c1                   	.byte 0xc1