loop7: detected capacity change from 0 to 512
EXT4-fs (loop7): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none.
EXT4-fs (loop7): unmounting filesystem 00000000-0000-0000-0000-000000000000.
watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [syz-executor.5:4656]
Modules linked in:
irq event stamp: 189720
hardirqs last  enabled at (189719): [<ffffffff8460144a>] asm_sysvec_apic_timer_interrupt+0x1a/0x20
hardirqs last disabled at (189720): [<ffffffff84507fff>] sysvec_apic_timer_interrupt+0xf/0x90
softirqs last  enabled at (189714): [<ffffffff8118dda3>] irq_exit_rcu+0x93/0xc0
softirqs last disabled at (189709): [<ffffffff8118dda3>] irq_exit_rcu+0x93/0xc0
CPU: 1 PID: 4656 Comm: syz-executor.5 Tainted: G             L     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+0xba2/0x4560
Code: c0 74 08 3c 03 0f 8e f8 2f 00 00 48 8b 44 24 10 31 ff 8b 00 89 c3 89 44 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
RSP: 0018:ffff888041fbf328 EFLAGS: 00000246
RAX: 0000000000000002 RBX: 0000000000010000 RCX: ffffffff83c35f0c
RDX: ffff88801c893680 RSI: 0000000000000000 RDI: 0000000000000005
RBP: ffff888040a05c30 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001
R13: dffffc0000000000 R14: ffff88800ef858c0 R15: 0000000000000001
FS:  00007fd773ab6700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9c5ed6b9a8 CR3: 0000000044cde000 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: 0033:0x7fd776582b19
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:00007fd773ab6188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fd7766960e0 RCX: 00007fd776582b19
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000006
RBP: 00007fd7765dcf6d R08: 0000000000000000 R09: 0000000000000000
R10: 000000000001a000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcaa01d94f R14: 00007fd773ab6300 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:	c0 74 08 3c 03       	shlb   $0x3,0x3c(%rax,%rcx,1)
   5:	0f 8e f8 2f 00 00    	jle    0x3003
   b:	48 8b 44 24 10       	mov    0x10(%rsp),%rax
  10:	31 ff                	xor    %edi,%edi
  12:	8b 00                	mov    (%rax),%eax
  14:	89 c3                	mov    %eax,%ebx
  16:	89 44 24 28          	mov    %eax,0x28(%rsp)
  1a:	83 e3 02             	and    $0x2,%ebx
  1d:	89 de                	mov    %ebx,%esi
  1f:	e8 64 a2 88 fd       	callq  0xfd88a288
  24:	85 db                	test   %ebx,%ebx
  26:	8b 5c 24 08          	mov    0x8(%rsp),%ebx
* 2a:	0f 45 5c 24 18       	cmovne 0x18(%rsp),%ebx <-- trapping instruction
  2f:	e8 b4 a6 88 fd       	callq  0xfd88a6e8
  34:	48 8b 44 24 38       	mov    0x38(%rsp),%rax
  39:	48 c1 e8 03          	shr    $0x3,%rax
  3d:	42                   	rex.X
  3e:	0f                   	.byte 0xf
  3f:	b6                   	.byte 0xb6