watchdog: BUG: soft lockup - CPU#1 stuck for 26s! [syz-executor.5:10310]
Modules linked in:
irq event stamp: 248088
hardirqs last  enabled at (248087): [<ffffffff8460144a>] asm_sysvec_apic_timer_interrupt+0x1a/0x20
hardirqs last disabled at (248088): [<ffffffff84504fff>] sysvec_apic_timer_interrupt+0xf/0x90
softirqs last  enabled at (248068): [<ffffffff8118dda3>] irq_exit_rcu+0x93/0xc0
softirqs last disabled at (248063): [<ffffffff8118dda3>] irq_exit_rcu+0x93/0xc0
CPU: 1 PID: 10310 Comm: syz-executor.5 Not tainted 6.4.0-rc6-next-20230613 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:__sanitizer_cov_trace_pc+0x50/0x70
Code: 0e 85 c9 74 35 8b 82 9c 14 00 00 85 c0 74 2b 8b 82 78 14 00 00 83 f8 02 75 20 48 8b 8a 80 14 00 00 8b 92 7c 14 00 00 48 8b 01 <48> 83 c0 01 48 39 c2 76 07 48 89 01 48 89 34 c1 e9 7b c0 06 03 66
RSP: 0018:ffff88803d9ff320 EFLAGS: 00000246
RAX: 000000000003ffff RBX: 000000000000ffd8 RCX: ffffc90001fdf000
RDX: 0000000000040000 RSI: ffffffff83c33bbf RDI: 0000000000000005
RBP: 0000000000000028 R08: 0000000000000005 R09: 0000000000000000
R10: 000000000000ffd8 R11: 0000000000000001 R12: 0000000000000001
R13: dffffc0000000000 R14: ffff888040c74000 R15: 0000000000000001
FS:  00007f9518e17700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2c72b000 CR3: 0000000036be6000 CR4: 0000000000350ee0
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 __ip6_append_data.isra.0+0xc0f/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+0xb4b/0x12f0
 __x64_sys_sendfile64+0x1d5/0x210
 do_syscall_64+0x3f/0x90
 entry_SYSCALL_64_after_hwframe+0x6e/0xd8
RIP: 0033:0x7f951b8c2b19
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:00007f9518e17188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f951b9d6020 RCX: 00007f951b8c2b19
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000006
RBP: 00007f951b91cf6d R08: 0000000000000000 R09: 0000000000000000
R10: 000000000001a000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc808f39af R14: 00007f9518e17300 R15: 0000000000022000
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0 skipped: idling at default_idle+0xf/0x20
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	85 c9                	test   %ecx,%ecx
   2:	74 35                	je     0x39
   4:	8b 82 9c 14 00 00    	mov    0x149c(%rdx),%eax
   a:	85 c0                	test   %eax,%eax
   c:	74 2b                	je     0x39
   e:	8b 82 78 14 00 00    	mov    0x1478(%rdx),%eax
  14:	83 f8 02             	cmp    $0x2,%eax
  17:	75 20                	jne    0x39
  19:	48 8b 8a 80 14 00 00 	mov    0x1480(%rdx),%rcx
  20:	8b 92 7c 14 00 00    	mov    0x147c(%rdx),%edx
  26:	48 8b 01             	mov    (%rcx),%rax
* 29:	48 83 c0 01          	add    $0x1,%rax <-- trapping instruction
  2d:	48 39 c2             	cmp    %rax,%rdx
  30:	76 07                	jbe    0x39
  32:	48 89 01             	mov    %rax,(%rcx)
  35:	48 89 34 c1          	mov    %rsi,(%rcx,%rax,8)
  39:	e9 7b c0 06 03       	jmpq   0x306c0b9
  3e:	66                   	data16