watchdog: BUG: soft lockup - CPU#1 stuck for 26s! [syz-executor.7:4168]
Modules linked in:
irq event stamp: 206382
hardirqs last  enabled at (206381): [<ffffffff8460144a>] asm_sysvec_apic_timer_interrupt+0x1a/0x20
hardirqs last disabled at (206382): [<ffffffff84507fff>] sysvec_apic_timer_interrupt+0xf/0x90
softirqs last  enabled at (206370): [<ffffffff8118dda3>] irq_exit_rcu+0x93/0xc0
softirqs last disabled at (206363): [<ffffffff8118dda3>] irq_exit_rcu+0x93/0xc0
CPU: 1 PID: 4168 Comm: syz-executor.7 Not tainted 6.4.0-rc6-next-20230616 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:__ip6_append_data.isra.0+0xbba/0x4560
Code: 24 28 83 e3 02 89 de e8 64 a2 88 fd 85 db 8b 5c 24 08 0f 45 5c 24 18 e8 b4 a6 88 fd 48 8b 44 24 38 48 c1 e8 03 42 0f b6 04 28 <84> c0 74 08 3c 03 0f 8e 16 2f 00 00 41 8b 6e 70 4c 89 fe 29 eb 48
RSP: 0018:ffff88800c72f328 EFLAGS: 00000212
RAX: 0000000000000000 RBX: 0000000000010000 RCX: ffffc9000d636000
RDX: 0000000000040000 RSI: ffffffff83c35f1c RDI: 0000000000000005
RBP: ffff888046866ab0 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001
R13: dffffc0000000000 R14: ffff888016c7c500 R15: 0000000000000001
FS:  00007f11ecda4700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f11ecda4718 CR3: 0000000016ad2000 CR4: 0000000000350ee0
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 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: 0033:0x7f11ef84fb19
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:00007f11ecda4188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f11ef963020 RCX: 00007f11ef84fb19
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000007
RBP: 00007f11ef8a9f6d R08: 0000000000000000 R09: 0000000000000000
R10: 000000000001a000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff3fb3921f R14: 00007f11ecda4300 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:	24 28                	and    $0x28,%al
   2:	83 e3 02             	and    $0x2,%ebx
   5:	89 de                	mov    %ebx,%esi
   7:	e8 64 a2 88 fd       	callq  0xfd88a270
   c:	85 db                	test   %ebx,%ebx
   e:	8b 5c 24 08          	mov    0x8(%rsp),%ebx
  12:	0f 45 5c 24 18       	cmovne 0x18(%rsp),%ebx
  17:	e8 b4 a6 88 fd       	callq  0xfd88a6d0
  1c:	48 8b 44 24 38       	mov    0x38(%rsp),%rax
  21:	48 c1 e8 03          	shr    $0x3,%rax
  25:	42 0f b6 04 28       	movzbl (%rax,%r13,1),%eax
* 2a:	84 c0                	test   %al,%al <-- trapping instruction
  2c:	74 08                	je     0x36
  2e:	3c 03                	cmp    $0x3,%al
  30:	0f 8e 16 2f 00 00    	jle    0x2f4c
  36:	41 8b 6e 70          	mov    0x70(%r14),%ebp
  3a:	4c 89 fe             	mov    %r15,%rsi
  3d:	29 eb                	sub    %ebp,%ebx
  3f:	48                   	rex.W