EXT4-fs (loop6): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none.
EXT4-fs error (device loop6): ext4_validate_block_bitmap:429: comm syz-executor.6: bg 0: block 2: invalid block bitmap
syz-executor.4 (4524) used greatest stack depth: 23704 bytes left
watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.2:4554]
Modules linked in:
irq event stamp: 131026
hardirqs last  enabled at (131025): [<ffffffff8460144a>] asm_sysvec_apic_timer_interrupt+0x1a/0x20
hardirqs last disabled at (131026): [<ffffffff84507fff>] sysvec_apic_timer_interrupt+0xf/0x90
softirqs last  enabled at (131018): [<ffffffff8118dda3>] irq_exit_rcu+0x93/0xc0
softirqs last disabled at (131013): [<ffffffff8118dda3>] irq_exit_rcu+0x93/0xc0
CPU: 0 PID: 4554 Comm: syz-executor.2 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:write_comp_data+0x3c/0x90
Code: 81 e6 00 01 00 00 65 48 8b 14 25 00 8b 03 00 a9 00 01 ff 00 74 0e 85 f6 74 59 8b 82 9c 14 00 00 85 c0 74 4f 8b 82 78 14 00 00 <83> f8 03 75 44 48 8b 82 80 14 00 00 8b 92 7c 14 00 00 48 8b 38 48
RSP: 0018:ffff88800fe4f320 EFLAGS: 00000246
RAX: 0000000000000002 RBX: 000000000000ffd8 RCX: ffffffff83c35f4f
RDX: ffff888042ee9b40 RSI: 0000000000000000 RDI: 0000000000000006
RBP: 0000000000000028 R08: 0000000000000006 R09: 000000000000ffd8
R10: 0000000000000006 R11: 0000000000000001 R12: 0000000000000006
R13: dffffc0000000000 R14: ffff88804451bc80 R15: 0000000000000006
FS:  00007f65679c8700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2c62c000 CR3: 0000000016a3e000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 __ip6_append_data.isra.0+0xbdf/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: 0033:0x7f656a473b19
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:00007f65679c8188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f656a587020 RCX: 00007f656a473b19
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000007
RBP: 00007f656a4cdf6d R08: 0000000000000000 R09: 0000000000000000
R10: 000000000001a000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd833b70cf R14: 00007f65679c8300 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:	81 e6 00 01 00 00    	and    $0x100,%esi
   6:	65 48 8b 14 25 00 8b 	mov    %gs:0x38b00,%rdx
   d:	03 00
   f:	a9 00 01 ff 00       	test   $0xff0100,%eax
  14:	74 0e                	je     0x24
  16:	85 f6                	test   %esi,%esi
  18:	74 59                	je     0x73
  1a:	8b 82 9c 14 00 00    	mov    0x149c(%rdx),%eax
  20:	85 c0                	test   %eax,%eax
  22:	74 4f                	je     0x73
  24:	8b 82 78 14 00 00    	mov    0x1478(%rdx),%eax
* 2a:	83 f8 03             	cmp    $0x3,%eax <-- trapping instruction
  2d:	75 44                	jne    0x73
  2f:	48 8b 82 80 14 00 00 	mov    0x1480(%rdx),%rax
  36:	8b 92 7c 14 00 00    	mov    0x147c(%rdx),%edx
  3c:	48 8b 38             	mov    (%rax),%rdi
  3f:	48                   	rex.W