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DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff88804b45f818, owner = 0x0, curr 0xffff88802b7a3c80, list empty
WARNING: kernel/locking/rwsem.c:1381 at __up_write kernel/locking/rwsem.c:1380 [inline], CPU#1: syz.2.3331/16623
WARNING: kernel/locking/rwsem.c:1381 at up_write+0x2d8/0x410 kernel/locking/rwsem.c:1643, CPU#1: syz.2.3331/16623
Modules linked in:
CPU: 1 UID: 0 PID: 16623 Comm: syz.2.3331 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: 8b 8b 49 c7 c2 e0 23 8b 8b 4c 0f 44 d0 48 8b 7c 24 08 48 c7 c6 00 25 8b 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 b8 fb ed 02 e9 66 fd ff ff 48 c7 c1
RSP: 0018:ffffc90003527a40 EFLAGS: 00010246
RAX: ffffffff8b8b23c0 RBX: ffff88804b45f818 RCX: ffff88804b45f818
RDX: 0000000000000000 RSI: ffffffff8b8b2500 RDI: ffffffff8fa57e30
RBP: ffff88804b45f870 R08: 0000000000000000 R09: ffff88802b7a3c80
R10: ffffffff8b8b23c0 R11: ffffed100968bf05 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88804b45f818 R15: 1ffff1100968bf04
FS:  00007f0687bdb6c0(0000) GS:ffff888125d0c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa87da5f570 CR3: 0000000049330000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 inode_unlock include/linux/fs.h:1038 [inline]
 vfs_setxattr+0x171/0x360 fs/xattr.c:323
 do_setxattr fs/xattr.c:636 [inline]
 filename_setxattr+0x274/0x600 fs/xattr.c:665
 path_setxattrat+0x364/0x3a0 fs/xattr.c:713
 __do_sys_lsetxattr fs/xattr.c:754 [inline]
 __se_sys_lsetxattr fs/xattr.c:750 [inline]
 __x64_sys_lsetxattr+0xbf/0xe0 fs/xattr.c:750
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0686d8f749
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:00007f0687bdb038 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd
RAX: ffffffffffffffda RBX: 00007f0686fe6090 RCX: 00007f0686d8f749
RDX: 0000000000000000 RSI: 00002000000000c0 RDI: 0000200000000080
RBP: 00007f0686e13f91 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0686fe6128 R14: 00007f0686fe6090 R15: 00007ffe7c0864b8
 </TASK>
----------------
Code disassembly (best guess):
   0:	8b 8b 49 c7 c2 e0    	mov    -0x1f3d38b7(%rbx),%ecx
   6:	23 8b 8b 4c 0f 44    	and    0x440f4c8b(%rbx),%ecx
   c:	d0 48 8b             	rorb   -0x75(%rax)
   f:	7c 24                	jl     0x35
  11:	08 48 c7             	or     %cl,-0x39(%rax)
  14:	c6 00 25             	movb   $0x25,(%rax)
  17:	8b 8b 48 8b 14 24    	mov    0x24148b48(%rbx),%ecx
  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 b8 fb ed 02       	call   0x2edfbf0
  38:	e9 66 fd ff ff       	jmp    0xfffffda3
  3d:	48                   	rex.W
  3e:	c7                   	.byte 0xc7
  3f:	c1                   	.byte 0xc1