watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [syz-executor.5:4623]
Modules linked in:
irq event stamp: 97000
hardirqs last  enabled at (96999): [<ffffffff8460144a>] asm_sysvec_apic_timer_interrupt+0x1a/0x20
hardirqs last disabled at (97000): [<ffffffff84507fff>] sysvec_apic_timer_interrupt+0xf/0x90
softirqs last  enabled at (96916): [<ffffffff8118dda3>] irq_exit_rcu+0x93/0xc0
softirqs last disabled at (96911): [<ffffffff8118dda3>] irq_exit_rcu+0x93/0xc0
CPU: 0 PID: 4623 Comm: syz-executor.5 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:__sanitizer_cov_trace_pc+0x11/0x70
Code: 66 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 65 8b 05 2d 85 b7 7e 89 c1 48 8b 34 24 <81> e1 00 01 00 00 65 48 8b 14 25 00 8b 03 00 a9 00 01 ff 00 74 0e
RSP: 0018:ffff88801cfc7180 EFLAGS: 00000246
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff836714fa RDI: ffff888019e48140
RBP: 0000000008000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000008000000 R11: 0000000000000001 R12: 0000000000000001
R13: ffff888019e48140 R14: ffff888019e48140 R15: ffff88801cfc7738
FS:  00007fb0f7f6c700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2c525000 CR3: 000000000dcd2000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 skb_splice_from_iter+0x9a/0xb50
 __ip6_append_data.isra.0+0x1715/0x4560
 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: 0033:0x7fb0faa17b19
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:00007fb0f7f6c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fb0fab2b020 RCX: 00007fb0faa17b19
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000007
RBP: 00007fb0faa71f6d R08: 0000000000000000 R09: 0000000000000000
R10: 000000000001a000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd06f809cf R14: 00007fb0f7f6c300 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:	66 0f 1f 84 00 00 00 	nopw   0x0(%rax,%rax,1)
   7:	00 00
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	f3 0f 1e fa          	endbr64
  1d:	65 8b 05 2d 85 b7 7e 	mov    %gs:0x7eb7852d(%rip),%eax        # 0x7eb78551
  24:	89 c1                	mov    %eax,%ecx
  26:	48 8b 34 24          	mov    (%rsp),%rsi
* 2a:	81 e1 00 01 00 00    	and    $0x100,%ecx <-- trapping instruction
  30:	65 48 8b 14 25 00 8b 	mov    %gs:0x38b00,%rdx
  37:	03 00
  39:	a9 00 01 ff 00       	test   $0xff0100,%eax
  3e:	74 0e                	je     0x4e