loop4: detected capacity change from 0 to 64
FAT-fs (loop4): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
FAT-fs (loop4): error, invalid access to FAT (entry 0x000000f8)
FAT-fs (loop4): Filesystem has been set read-only
watchdog: BUG: soft lockup - CPU#1 stuck for 26s! [syz-executor.3:3974]
Modules linked in:
irq event stamp: 183218
hardirqs last  enabled at (183217): [<ffffffff8460144a>] asm_sysvec_apic_timer_interrupt+0x1a/0x20
hardirqs last disabled at (183218): [<ffffffff84507fff>] sysvec_apic_timer_interrupt+0xf/0x90
softirqs last  enabled at (183112): [<ffffffff8118dda3>] irq_exit_rcu+0x93/0xc0
softirqs last disabled at (183107): [<ffffffff8118dda3>] irq_exit_rcu+0x93/0xc0
CPU: 1 PID: 3974 Comm: syz-executor.3 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+0xb8c/0x4560
Code: 24 08 77 41 e8 f5 a6 88 fd 48 89 e8 48 c1 e8 03 42 0f b6 04 28 84 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
RSP: 0018:ffff88803ac97328 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 000000000000fff8 RCX: ffffc900027d3000
RDX: 0000000000040000 RSI: ffffffff83c35edb RDI: 0000000000000000
RBP: ffff888042b66370 R08: 0000000000000004 R09: 0000000000000001
R10: 0000000000010000 R11: 0000000000000001 R12: 0000000000000001
R13: dffffc0000000000 R14: ffff8880198eb280 R15: 0000000000000001
FS:  00007f67b1ef0700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2c425000 CR3: 000000001c9cc000 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: 0033:0x7f67b499bb19
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:00007f67b1ef0188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f67b4aaf020 RCX: 00007f67b499bb19
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000006
RBP: 00007f67b49f5f6d R08: 0000000000000000 R09: 0000000000000000
R10: 000000000001a000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd2ba454af R14: 00007f67b1ef0300 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 08                	and    $0x8,%al
   2:	77 41                	ja     0x45
   4:	e8 f5 a6 88 fd       	callq  0xfd88a6fe
   9:	48 89 e8             	mov    %rbp,%rax
   c:	48 c1 e8 03          	shr    $0x3,%rax
  10:	42 0f b6 04 28       	movzbl (%rax,%r13,1),%eax
  15:	84 c0                	test   %al,%al
  17:	74 08                	je     0x21
  19:	3c 03                	cmp    $0x3,%al
  1b:	0f 8e f8 2f 00 00    	jle    0x3019
  21:	48 8b 44 24 10       	mov    0x10(%rsp),%rax
  26:	31 ff                	xor    %edi,%edi
  28:	8b 00                	mov    (%rax),%eax
* 2a:	89 c3                	mov    %eax,%ebx <-- trapping instruction
  2c:	89 44 24 28          	mov    %eax,0x28(%rsp)
  30:	83 e3 02             	and    $0x2,%ebx
  33:	89 de                	mov    %ebx,%esi
  35:	e8 64 a2 88 fd       	callq  0xfd88a29e
  3a:	85 db                	test   %ebx,%ebx
  3c:	8b 5c 24 08          	mov    0x8(%rsp),%ebx