EXT4-fs (loop1): VFS: Can't find ext4 filesystem
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 7982 Comm: syz-executor.0 Not tainted 4.14.295-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
task: ffff8880a41446c0 task.stack: ffff88809a2a0000
RIP: 0010:kobject_uevent_env+0xb2/0xf30 lib/kobject_uevent.c:356
RSP: 0000:ffff88809a2a7b28 EFLAGS: 00010206
RAX: 0000000000000018 RBX: 0000000000000002 RCX: 1ffff110148289ee
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000000000c0
RBP: ffff88809c2d5d90 R08: ffffffff8b9df590 R09: 0000000000000001
R10: 0000000000000000 R11: ffff8880a41446c0 R12: 00000000000000a0
R13: dffffc0000000000 R14: ffff88809c2d5c88 R15: 00000000000000a0
FS:  00005555569af400(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2e92a000 CR3: 00000000a3185000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 loop_clr_fd+0x59f/0xc20 drivers/block/loop.c:1069
 lo_ioctl+0x895/0x1cd0 drivers/block/loop.c:1429
 __blkdev_driver_ioctl block/ioctl.c:297 [inline]
 blkdev_ioctl+0x540/0x1830 block/ioctl.c:594
 block_ioctl+0xd9/0x120 fs/block_dev.c:1893
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:500 [inline]
 do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684
 SYSC_ioctl fs/ioctl.c:701 [inline]
 SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7fb530aa1367
RSP: 002b:00007fffd4889ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fffd488a080 RCX: 00007fb530aa1367
RDX: 0000000000000000 RSI: 0000000000004c01 RDI: 0000000000000003
RBP: 0000000000000003 R08: 0000000000000000 R09: 00007fffd4889e90
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000032
R13: 0000000000017c52 R14: 000000000000000e R15: 00007fffd488a0c0
Code: 03 42 80 3c 28 00 0f 85 dd 0b 00 00 4d 8b 64 24 18 4d 85 e4 0f 84 fa 0b 00 00 e8 ca e7 56 fa 49 8d 7c 24 20 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 0f 85 d4 0b 00 00 49 8b 6c 24 20 48 85 ed 74 b0 
RIP: kobject_uevent_env+0xb2/0xf30 lib/kobject_uevent.c:356 RSP: ffff88809a2a7b28
---[ end trace 44ddd1fa15e64f28 ]---
----------------
Code disassembly (best guess):
   0:	03 42 80             	add    -0x80(%rdx),%eax
   3:	3c 28                	cmp    $0x28,%al
   5:	00 0f                	add    %cl,(%rdi)
   7:	85 dd                	test   %ebx,%ebp
   9:	0b 00                	or     (%rax),%eax
   b:	00 4d 8b             	add    %cl,-0x75(%rbp)
   e:	64 24 18             	fs and $0x18,%al
  11:	4d 85 e4             	test   %r12,%r12
  14:	0f 84 fa 0b 00 00    	je     0xc14
  1a:	e8 ca e7 56 fa       	callq  0xfa56e7e9
  1f:	49 8d 7c 24 20       	lea    0x20(%r12),%rdi
  24:	48 89 f8             	mov    %rdi,%rax
  27:	48 c1 e8 03          	shr    $0x3,%rax
* 2b:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1) <-- trapping instruction
  30:	0f 85 d4 0b 00 00    	jne    0xc0a
  36:	49 8b 6c 24 20       	mov    0x20(%r12),%rbp
  3b:	48 85 ed             	test   %rbp,%rbp
  3e:	74 b0                	je     0xfffffff0