watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [syz-executor.2:7277]
Modules linked in:
irq event stamp: 122338
hardirqs last  enabled at (122337): [<ffffffff8460144a>] asm_sysvec_apic_timer_interrupt+0x1a/0x20
hardirqs last disabled at (122338): [<ffffffff84506fff>] sysvec_apic_timer_interrupt+0xf/0x90
softirqs last  enabled at (122250): [<ffffffff8118dda3>] irq_exit_rcu+0x93/0xc0
softirqs last disabled at (122245): [<ffffffff8118dda3>] irq_exit_rcu+0x93/0xc0
CPU: 0 PID: 7277 Comm: syz-executor.2 Tainted: G             L     6.4.0-rc6-next-20230615 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x8/0x20
Code: bf 03 00 00 00 e9 58 fe ff ff 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 0c 24 <89> f2 89 fe bf 05 00 00 00 e9 2a fe ff ff 66 2e 0f 1f 84 00 00 00
RSP: 0018:ffff8880481e7320 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff83c3559c
RDX: 0000000000040000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff888041de54f0 R08: 0000000000000004 R09: 0000000000000001
R10: 0000000000010000 R11: 0000000000000001 R12: 0000000000000001
R13: dffffc0000000000 R14: ffff88803f289a00 R15: 0000000000000001
FS:  00007fa98c4a1700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2c331000 CR3: 000000000d5f2000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 __ip6_append_data.isra.0+0xb9c/0x4560
 ip6_append_data+0x1d4/0x530
 rawv6_sendmsg+0x156e/0x3dc0
 inet_sendmsg+0x121/0x150
 sock_sendmsg+0x19b/0x200
 splice_to_socket+0x949/0xe10
 direct_splice_actor+0x119/0x180
 splice_direct_to_actor+0x349/0x9d0
 do_splice_direct+0x1bb/0x290
 do_sendfile+0xb6b/0x1370
 __x64_sys_sendfile64+0x1d5/0x210
 do_syscall_64+0x3f/0x90
 entry_SYSCALL_64_after_hwframe+0x6e/0xd8
RIP: 0033:0x7fa98ef4cb19
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:00007fa98c4a1188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fa98f060020 RCX: 00007fa98ef4cb19
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000007
RBP: 00007fa98efa6f6d R08: 0000000000000000 R09: 0000000000000000
R10: 000000000001a000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc0a0056ff R14: 00007fa98c4a1300 R15: 0000000000022000
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at default_idle+0xf/0x20
----------------
Code disassembly (best guess):
   0:	bf 03 00 00 00       	mov    $0x3,%edi
   5:	e9 58 fe ff ff       	jmpq   0xfffffe62
   a:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
  11:	00
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	f3 0f 1e fa          	endbr64
  26:	48 8b 0c 24          	mov    (%rsp),%rcx
* 2a:	89 f2                	mov    %esi,%edx <-- trapping instruction
  2c:	89 fe                	mov    %edi,%esi
  2e:	bf 05 00 00 00       	mov    $0x5,%edi
  33:	e9 2a fe ff ff       	jmpq   0xfffffe62
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)