null_blk: nullb1: using native zone append
------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(lock->magic != lock)
WARNING: kernel/locking/mutex.c:625 at __mutex_lock_common kernel/locking/mutex.c:625 [inline], CPU#0: syz.0.0/5321
WARNING: kernel/locking/mutex.c:625 at __mutex_lock+0x12d8/0x1550 kernel/locking/mutex.c:821, CPU#0: syz.0.0/5321
Modules linked in:
CPU: 0 UID: 0 PID: 5321 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:625 [inline]
RIP: 0010:__mutex_lock+0x12df/0x1550 kernel/locking/mutex.c:821
Code: 9e 57 90 48 c1 e8 03 0f b6 04 18 84 c0 0f 85 47 02 00 00 83 3d 45 5c 83 04 00 75 13 48 8d 3d c8 ab 86 04 48 c7 c6 40 f7 ec 8b <67> 48 0f b9 3a 90 e9 75 ee ff ff 90 0f 0b 90 e9 48 f2 ff ff 90 0f
RSP: 0000:ffffc9000dfaf460 EFLAGS: 00010246
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffff888012d72540
RDX: 0000000000000000 RSI: ffffffff8becf740 RDI: ffffffff905aedd0
RBP: ffffc9000dfaf5f0 R08: ffffffff90579e43 R09: 1ffffffff20af3c8
R10: dffffc0000000000 R11: fffffbfff20af3c9 R12: ffff888052380000
R13: 0000000000000000 R14: 1ffff92001bf5ea0 R15: 0000000000000000
FS:  00007f89e91c36c0(0000) GS:ffff88808c549000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f89e85f36b8 CR3: 0000000013674000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 null_lock_zone drivers/block/null_blk/zoned.c:39 [inline]
 null_report_zones+0x33e/0x810 drivers/block/null_blk/zoned.c:219
 blk_revalidate_disk_zones+0xa0e/0x12e0 block/blk-zoned.c:2384
 null_add_dev+0x12b8/0x1d70 drivers/block/null_blk/main.c:2047
 nullb_device_power_store+0x240/0x380 drivers/block/null_blk/main.c:501
 flush_write_buffer fs/configfs/file.c:207 [inline]
 configfs_write_iter+0x337/0x430 fs/configfs/file.c:229
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x612/0xba0 fs/read_write.c:687
 ksys_write+0x150/0x270 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f89e839e0d9
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:00007f89e91c2fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f89e8626090 RCX: 00007f89e839e0d9
RDX: 0000000000000001 RSI: 0000200000000700 RDI: 0000000000000005
RBP: 00007f89e8435024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f89e8626128 R14: 00007f89e8626090 R15: 00007ffe36163f28
 </TASK>
----------------
Code disassembly (best guess):
   0:	9e                   	sahf
   1:	57                   	push   %rdi
   2:	90                   	nop
   3:	48 c1 e8 03          	shr    $0x3,%rax
   7:	0f b6 04 18          	movzbl (%rax,%rbx,1),%eax
   b:	84 c0                	test   %al,%al
   d:	0f 85 47 02 00 00    	jne    0x25a
  13:	83 3d 45 5c 83 04 00 	cmpl   $0x0,0x4835c45(%rip)        # 0x4835c5f
  1a:	75 13                	jne    0x2f
  1c:	48 8d 3d c8 ab 86 04 	lea    0x486abc8(%rip),%rdi        # 0x486abeb
  23:	48 c7 c6 40 f7 ec 8b 	mov    $0xffffffff8becf740,%rsi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	90                   	nop
  30:	e9 75 ee ff ff       	jmp    0xffffeeaa
  35:	90                   	nop
  36:	0f 0b                	ud2
  38:	90                   	nop
  39:	e9 48 f2 ff ff       	jmp    0xfffff286
  3e:	90                   	nop
  3f:	0f                   	.byte 0xf