print_req_error: I/O error, dev loop0, sector 0
general protection fault: 0000 [#1] PREEMPT SMP KASAN NOPTI
Modules linked in:
CPU: 1 PID: 20236 Comm: syz-executor.4 Not tainted 4.14.139+ #36
task: 000000007e9be364 task.stack: 00000000315c0e58
RIP: 0010:is_loop_device drivers/block/loop.c:622 [inline]
RIP: 0010:loop_validate_file+0x1ef/0x2c0 drivers/block/loop.c:633
RSP: 0018:ffff8881d186fb60 EFLAGS: 00010202
RAX: 0000000000000037 RBX: ffff8881d53f57d8 RCX: 00000000000000a6
RDX: ffffffff81e28731 RSI: ffffc9000474a000 RDI: 00000000000001b8
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: fffffbfff2445a41 R11: ffffffff9222d20b R12: ffff8881d53f1cc0
R13: dffffc0000000000 R14: 00000000fffffff0 R15: ffff8881d53f1da0
FS:  00007f2c0109e700(0000) GS:ffff8881dbb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f63d1fb0000 CR3: 000000019517e002 CR4: 00000000001606a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 loop_set_fd drivers/block/loop.c:897 [inline]
 lo_ioctl+0xa47/0x1a30 drivers/block/loop.c:1407
 __blkdev_driver_ioctl block/ioctl.c:297 [inline]
 blkdev_ioctl+0x8d0/0x1870 block/ioctl.c:594
 block_ioctl+0xd9/0x120 fs/block_dev.c:1881
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:500 [inline]
 do_vfs_ioctl+0xabe/0x1040 fs/ioctl.c:684
 SYSC_ioctl fs/ioctl.c:701 [inline]
 SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692
 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x459829
RSP: 002b:00007f2c0109dc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459829
RDX: 0000000000000003 RSI: 0000000000004c00 RDI: 0000000000000004
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2c0109e6d4
R13: 00000000004c3001 R14: 00000000004d6708 R15: 00000000ffffffff
Code: f0 00 00 00 48 89 f8 48 c1 e8 03 42 80 3c 28 00 0f 85 d1 00 00 00 48 8b ad f0 00 00 00 48 8d bd b8 01 00 00 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 0f 85 a7 00 00 00 48 8b ad b8 01 00 00 48 89 e8 
RIP: is_loop_device drivers/block/loop.c:622 [inline] RSP: ffff8881d186fb60
RIP: loop_validate_file+0x1ef/0x2c0 drivers/block/loop.c:633 RSP: ffff8881d186fb60
---[ end trace 8ed6be2d8dc2e4b7 ]---