================================
WARNING: inconsistent lock state
6.0.0-rc3-syzkaller-00031-gc5e4d5e99162 #0 Not tainted
--------------------------------
inconsistent {IN-HARDIRQ-W} -> {HARDIRQ-ON-W} usage.
syz-executor.3/14114 [HC0[0]:SC0[0]:HE1:SE1] takes:
ffff88801c028418 (&clnt->lock){?...}-{2:2}, at: spin_lock include/linux/spinlock.h:349 [inline]
ffff88801c028418 (&clnt->lock){?...}-{2:2}, at: p9_fd_request+0x85/0x330 net/9p/trans_fd.c:672
{IN-HARDIRQ-W} state was registered at:
  lock_acquire kernel/locking/lockdep.c:5666 [inline]
  lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631
  __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
  _raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162
  p9_tag_remove net/9p/client.c:367 [inline]
  p9_req_put net/9p/client.c:375 [inline]
  p9_req_put+0xc6/0x250 net/9p/client.c:372
  req_done+0x1de/0x2e0 net/9p/trans_virtio.c:148
  vring_interrupt drivers/virtio/virtio_ring.c:2462 [inline]
  vring_interrupt+0x29d/0x3d0 drivers/virtio/virtio_ring.c:2437
  __handle_irq_event_percpu+0x227/0x870 kernel/irq/handle.c:158
  handle_irq_event_percpu kernel/irq/handle.c:193 [inline]
  handle_irq_event+0xa7/0x1e0 kernel/irq/handle.c:210
  handle_edge_irq+0x25f/0xd00 kernel/irq/chip.c:819
  generic_handle_irq_desc include/linux/irqdesc.h:158 [inline]
  handle_irq arch/x86/kernel/irq.c:231 [inline]
  __common_interrupt+0x9d/0x210 arch/x86/kernel/irq.c:250
  common_interrupt+0xa4/0xc0 arch/x86/kernel/irq.c:240
  asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:640
  native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline]
  arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline]
  default_idle+0xb/0x10 arch/x86/kernel/process.c:730
  default_idle_call+0x80/0xc0 kernel/sched/idle.c:109
  cpuidle_idle_call kernel/sched/idle.c:191 [inline]
  do_idle+0x401/0x590 kernel/sched/idle.c:303
  cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:400
  start_secondary+0x21d/0x2b0 arch/x86/kernel/smpboot.c:262
  secondary_startup_64_no_verify+0xce/0xdb
irq event stamp: 463
hardirqs last  enabled at (463): [<ffffffff8982a2ef>] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline]
hardirqs last  enabled at (463): [<ffffffff8982a2ef>] _raw_spin_unlock_irq+0x1f/0x40 kernel/locking/spinlock.c:202
hardirqs last disabled at (462): [<ffffffff8982a0c1>] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:117 [inline]
hardirqs last disabled at (462): [<ffffffff8982a0c1>] _raw_spin_lock_irq+0x41/0x50 kernel/locking/spinlock.c:170
softirqs last  enabled at (414): [<ffffffff81491843>] invoke_softirq kernel/softirq.c:445 [inline]
softirqs last  enabled at (414): [<ffffffff81491843>] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650
softirqs last disabled at (399): [<ffffffff81491843>] invoke_softirq kernel/softirq.c:445 [inline]
softirqs last disabled at (399): [<ffffffff81491843>] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(&clnt->lock);
  <Interrupt>
    lock(&clnt->lock);

 *** DEADLOCK ***

no locks held by syz-executor.3/14114.

stack backtrace:
CPU: 3 PID: 14114 Comm: syz-executor.3 Not tainted 6.0.0-rc3-syzkaller-00031-gc5e4d5e99162 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 print_usage_bug kernel/locking/lockdep.c:3961 [inline]
 valid_state kernel/locking/lockdep.c:3973 [inline]
 mark_lock_irq kernel/locking/lockdep.c:4176 [inline]
 mark_lock.part.0.cold+0x18/0xd8 kernel/locking/lockdep.c:4632
 mark_lock kernel/locking/lockdep.c:4596 [inline]
 mark_usage kernel/locking/lockdep.c:4541 [inline]
 __lock_acquire+0x847/0x56d0 kernel/locking/lockdep.c:5007
 lock_acquire kernel/locking/lockdep.c:5666 [inline]
 lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:349 [inline]
 p9_fd_request+0x85/0x330 net/9p/trans_fd.c:672
 p9_client_rpc+0x2f0/0xce0 net/9p/client.c:660
 p9_client_version net/9p/client.c:880 [inline]
 p9_client_create+0xaec/0x1070 net/9p/client.c:985
 v9fs_session_init+0x1e2/0x1810 fs/9p/v9fs.c:408
 v9fs_mount+0xba/0xc90 fs/9p/vfs_super.c:126
 legacy_get_tree+0x105/0x220 fs/fs_context.c:610
 vfs_get_tree+0x89/0x2f0 fs/super.c:1530
 do_new_mount fs/namespace.c:3040 [inline]
 path_mount+0x1326/0x1e20 fs/namespace.c:3370
 do_mount fs/namespace.c:3383 [inline]
 __do_sys_mount fs/namespace.c:3591 [inline]
 __se_sys_mount fs/namespace.c:3568 [inline]
 __ia32_sys_mount+0x27e/0x300 fs/namespace.c:3568
 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
 __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203
 entry_SYSENTER_compat_after_hwframe+0x70/0x82
RIP: 0023:0xf7f93549
Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f7f8e5cc EFLAGS: 00000296 ORIG_RAX: 0000000000000015
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000020000080
RDX: 0000000020000040 RSI: 0000000000000000 RDI: 0000000020000400
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
----------------
Code disassembly (best guess):
   0:	03 74 c0 01          	add    0x1(%rax,%rax,8),%esi
   4:	10 05 03 74 b8 01    	adc    %al,0x1b87403(%rip)        # 0x1b8740d
   a:	10 06                	adc    %al,(%rsi)
   c:	03 74 b4 01          	add    0x1(%rsp,%rsi,4),%esi
  10:	10 07                	adc    %al,(%rdi)
  12:	03 74 b0 01          	add    0x1(%rax,%rsi,4),%esi
  16:	10 08                	adc    %cl,(%rax)
  18:	03 74 d8 01          	add    0x1(%rax,%rbx,8),%esi
  1c:	00 00                	add    %al,(%rax)
  1e:	00 00                	add    %al,(%rax)
  20:	00 51 52             	add    %dl,0x52(%rcx)
  23:	55                   	push   %rbp
  24:	89 e5                	mov    %esp,%ebp
  26:	0f 34                	sysenter
  28:	cd 80                	int    $0x80
* 2a:	5d                   	pop    %rbp <-- trapping instruction
  2b:	5a                   	pop    %rdx
  2c:	59                   	pop    %rcx
  2d:	c3                   	retq
  2e:	90                   	nop
  2f:	90                   	nop
  30:	90                   	nop
  31:	90                   	nop
  32:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi
  39:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi