watchdog: BUG: soft lockup - CPU#1 stuck for 26s! [syz-executor.3:31733]
Modules linked in:
irq event stamp: 82316
hardirqs last  enabled at (82315): [<ffffffff8460144a>] asm_sysvec_apic_timer_interrupt+0x1a/0x20
hardirqs last disabled at (82316): [<ffffffff84506fff>] sysvec_apic_timer_interrupt+0xf/0x90
softirqs last  enabled at (82280): [<ffffffff8118dda3>] irq_exit_rcu+0x93/0xc0
softirqs last disabled at (82275): [<ffffffff8118dda3>] irq_exit_rcu+0x93/0xc0
CPU: 1 PID: 31733 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:__sanitizer_cov_trace_cmp8+0x4/0x20
Code: 89 fe bf 04 00 00 00 e9 ea fe ff ff 66 2e 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 48 89 f2 48 89 fe bf 06 00 00 00 e9 b8 fe ff ff 0f 1f
RSP: 0018:ffff8880499d7320 EFLAGS: 00000246
RAX: 0000000000040000 RBX: 000000000000ffd8 RCX: ffffc9000661a000
RDX: 0000000000040000 RSI: 0000000000000001 RDI: 000000000000ffd8
RBP: 0000000000000028 R08: 0000000000000005 R09: 0000000000000000
R10: 000000000000ffd8 R11: 0000000000000001 R12: 000000000000ffd8
R13: dffffc0000000000 R14: ffff88803a71cb40 R15: 0000000000000001
FS:  00007f1f4b0c1700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2c42d000 CR3: 0000000049462000 CR4: 0000000000350ee0
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 __ip6_append_data.isra.0+0xc1d/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: 0033:0x7f1f4dbaeb19
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:00007f1f4b0c1188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f1f4dcc21a0 RCX: 00007f1f4dbaeb19
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000008
RBP: 00007f1f4dc08f6d R08: 0000000000000000 R09: 0000000000000000
R10: 000000000001a000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffee344d32f R14: 00007f1f4b0c1300 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:	89 fe                	mov    %edi,%esi
   2:	bf 04 00 00 00       	mov    $0x4,%edi
   7:	e9 ea fe ff ff       	jmpq   0xfffffef6
   c:	66 2e 0f 1f 84 00 00 	nopw   %cs:0x0(%rax,%rax,1)
  13:	00 00 00
  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:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	f3 0f 1e fa          	endbr64
* 2a:	48 8b 0c 24          	mov    (%rsp),%rcx <-- trapping instruction
  2e:	48 89 f2             	mov    %rsi,%rdx
  31:	48 89 fe             	mov    %rdi,%rsi
  34:	bf 06 00 00 00       	mov    $0x6,%edi
  39:	e9 b8 fe ff ff       	jmpq   0xfffffef6
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)