watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor.6:8781]
Modules linked in:
irq event stamp: 4375914
hardirqs last  enabled at (4375913): [<ffffffff84200ccb>] asm_sysvec_apic_timer_interrupt+0x1b/0x20
hardirqs last disabled at (4375914): [<ffffffff8416d5cb>] sysvec_apic_timer_interrupt+0xb/0xc0
softirqs last  enabled at (31736): [<ffffffff81168cb3>] __irq_exit_rcu+0x113/0x170
softirqs last disabled at (31061): [<ffffffff81168cb3>] __irq_exit_rcu+0x113/0x170
CPU: 0 PID: 8781 Comm: syz-executor.6 Not tainted 5.18.0-next-20220526 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
RIP: 0010:__unwind_start+0x2/0x7c0
Code: 89 44 24 20 e8 9f ec 65 00 4c 8b 4c 24 38 48 8b 54 24 30 48 8b 44 24 28 4c 8b 44 24 20 e9 63 f6 ff ff 66 0f 1f 44 00 00 41 57 <49> 89 ff 41 56 41 55 4d 8d 6f 28 41 54 49 89 d4 ba 70 00 00 00 55
RSP: 0018:ffff888042b1f538 EFLAGS: 00000246
RAX: ffff8880180f9b00 RBX: ffffffff81345a90 RCX: ffff888042b1f5e0
RDX: 0000000000000000 RSI: ffff8880180f9b00 RDI: ffff888042b1f548
RBP: ffff888042b1f5e0 R08: 0000000000400820 R09: ffffed1007d09c0c
R10: 0000000000000001 R11: 0000000000000001 R12: ffff888042b1f610
R13: 0000000000000000 R14: ffff8880180f9b00 R15: 0000000000000020
FS:  00007f7a70fcf700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7a70fcef80 CR3: 000000003a9f0000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 arch_stack_walk+0x5f/0xf0
 stack_trace_save+0x8c/0xc0
 kasan_save_stack+0x1e/0x40
 __kasan_kmalloc+0x81/0xa0
 io_cqring_event_overflow+0xb9/0x650
 __io_req_complete_post+0x45e/0x530
 io_req_complete_post+0x56/0x1d0
 io_issue_sqe+0x291b/0xa070
 io_submit_sqes+0x1c74/0x7700
 __do_sys_io_uring_enter+0x107f/0x2280
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7f7a73a59b19
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7a70fcf188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: ffffffffffffffda RBX: 00007f7a73b6cf60 RCX: 00007f7a73a59b19
RDX: 0000000000000000 RSI: 0000000000007fd6 RDI: 0000000000000003
RBP: 00007f7a73ab3f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe12e4fdef R14: 00007f7a70fcf300 R15: 0000000000022000
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at default_idle+0xb/0x10
----------------
Code disassembly (best guess):
   0:	89 44 24 20          	mov    %eax,0x20(%rsp)
   4:	e8 9f ec 65 00       	callq  0x65eca8
   9:	4c 8b 4c 24 38       	mov    0x38(%rsp),%r9
   e:	48 8b 54 24 30       	mov    0x30(%rsp),%rdx
  13:	48 8b 44 24 28       	mov    0x28(%rsp),%rax
  18:	4c 8b 44 24 20       	mov    0x20(%rsp),%r8
  1d:	e9 63 f6 ff ff       	jmpq   0xfffff685
  22:	66 0f 1f 44 00 00    	nopw   0x0(%rax,%rax,1)
  28:	41 57                	push   %r15
* 2a:	49 89 ff             	mov    %rdi,%r15 <-- trapping instruction
  2d:	41 56                	push   %r14
  2f:	41 55                	push   %r13
  31:	4d 8d 6f 28          	lea    0x28(%r15),%r13
  35:	41 54                	push   %r12
  37:	49 89 d4             	mov    %rdx,%r12
  3a:	ba 70 00 00 00       	mov    $0x70,%edx
  3f:	55                   	push   %rbp