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DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff88803f8621f8, owner = 0x0, curr 0xffff88802f34db80, list empty
WARNING: kernel/locking/rwsem.c:1381 at 0x0, CPU#1: syz.1.3284/15984
Modules linked in:
CPU: 1 UID: 0 PID: 15984 Comm: syz.1.3284 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
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 38 48 ed 02 e9 66 fd ff ff 48 c7 c1
RSP: 0018:ffffc900031f7d80 EFLAGS: 00010246
RAX: ffffffff8b6b2320 RBX: ffff88803f8621f8 RCX: ffff88803f8621f8
RDX: 0000000000000000 RSI: ffffffff8b6b2460 RDI: ffffffff8f8539f0
RBP: ffff88803f862250 R08: 0000000000000000 R09: ffff88802f34db80
R10: ffffffff8b6b2320 R11: ffffed1007f0c441 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88803f8621f8 R15: 1ffff11007f0c440
FS:  00007f10c92e06c0(0000) GS:ffff888125f3a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f10c92dff98 CR3: 0000000065d53000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 inode_unlock include/linux/fs.h:1037 [inline]
 end_dirop fs/namei.c:2888 [inline]
 end_creating include/linux/namei.h:126 [inline]
 end_creating_path fs/namei.c:4922 [inline]
 do_mkdirat+0x2f4/0x4b0 fs/namei.c:5169
 __do_sys_mkdir fs/namei.c:5191 [inline]
 __se_sys_mkdir fs/namei.c:5189 [inline]
 __x64_sys_mkdir+0x6c/0x80 fs/namei.c:5189
 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: 0033:0x7f10c838f749
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:00007f10c92e0038 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007f10c85e6090 RCX: 00007f10c838f749
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000040
RBP: 00007f10c8413f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f10c85e6128 R14: 00007f10c85e6090 R15: 00007ffde421fea8
 </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 38 48 ed 02       	call   0x2ed4870
  38:	e9 66 fd ff ff       	jmp    0xfffffda3
  3d:	48                   	rex.W
  3e:	c7                   	.byte 0xc7
  3f:	c1                   	.byte 0xc1