watchdog: BUG: soft lockup - CPU#1 stuck for 26s! [syz-executor.3:4026]
Modules linked in:
irq event stamp: 234110
hardirqs last  enabled at (234109): [<ffffffff8460144a>] asm_sysvec_apic_timer_interrupt+0x1a/0x20
hardirqs last disabled at (234110): [<ffffffff84506fff>] sysvec_apic_timer_interrupt+0xf/0x90
softirqs last  enabled at (234108): [<ffffffff8118dda3>] irq_exit_rcu+0x93/0xc0
softirqs last disabled at (234077): [<ffffffff8118dda3>] irq_exit_rcu+0x93/0xc0
CPU: 1 PID: 4026 Comm: syz-executor.3 Not tainted 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:write_comp_data+0x85/0x90
Code: 00 00 4a 8d 34 dd 28 00 00 00 48 39 f2 72 1b 48 83 c7 01 48 89 38 4c 89 44 30 e0 4c 89 4c 30 e8 4c 89 54 30 f0 4a 89 4c d8 20 <e9> 06 ea 06 03 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffff888043e67320 EFLAGS: 00000297
RAX: 0000000000000002 RBX: 000000000000ffd8 RCX: ffffffff83c35602
RDX: ffff888015bc3680 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 0000000000000028 R08: 0000000000000005 R09: 0000000000000000
R10: 000000000000ffd8 R11: 0000000000000001 R12: 0000000000000001
R13: dffffc0000000000 R14: ffff88800fe59dc0 R15: 0000000000000001
FS:  00007f6b76bd2700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffa7ca19004 CR3: 00000000422c2000 CR4: 0000000000350ee0
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 __ip6_append_data.isra.0+0xc02/0x4560
 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: 0033:0x7f6b7967db19
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:00007f6b76bd2188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f6b79791020 RCX: 00007f6b7967db19
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000006
RBP: 00007f6b796d7f6d R08: 0000000000000000 R09: 0000000000000000
R10: 000000000001a000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff59c2b37f R14: 00007f6b76bd2300 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):
   0:	00 00                	add    %al,(%rax)
   2:	4a 8d 34 dd 28 00 00 	lea    0x28(,%r11,8),%rsi
   9:	00
   a:	48 39 f2             	cmp    %rsi,%rdx
   d:	72 1b                	jb     0x2a
   f:	48 83 c7 01          	add    $0x1,%rdi
  13:	48 89 38             	mov    %rdi,(%rax)
  16:	4c 89 44 30 e0       	mov    %r8,-0x20(%rax,%rsi,1)
  1b:	4c 89 4c 30 e8       	mov    %r9,-0x18(%rax,%rsi,1)
  20:	4c 89 54 30 f0       	mov    %r10,-0x10(%rax,%rsi,1)
  25:	4a 89 4c d8 20       	mov    %rcx,0x20(%rax,%r11,8)
* 2a:	e9 06 ea 06 03       	jmpq   0x306ea35 <-- trapping instruction
  2f:	66 0f 1f 44 00 00    	nopw   0x0(%rax,%rax,1)
  35:	90                   	nop
  36:	90                   	nop
  37:	90                   	nop
  38:	90                   	nop
  39:	90                   	nop
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop