general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 0 PID: 15515 Comm: syz-executor.4 Not tainted 4.14.158-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff88808cd04400 task.stack: ffff88804d318000
RIP: 0010:loop_validate_file+0x206/0x2d0 drivers/block/loop.c:633
RSP: 0018:ffff88804d31fbc0 EFLAGS: 00010202
RAX: 0000000000000037 RBX: ffff8880a6d69898 RCX: ffffc9000b246000
RDX: 0000000000000091 RSI: ffffffff83aee495 RDI: 00000000000001b8
RBP: ffff88804d31fbe0 R08: ffff88808cd04400 R09: 0000000000000001
R10: 0000000000000000 R11: ffff88808cd04400 R12: 0000000000000000
R13: ffff8880a6d70180 R14: dffffc0000000000 R15: ffff8882193a1390
kobject: 'loop3' (ffff8880a40ed560): kobject_uevent_env
FS:  00007fd9bbb9d700(0000) GS:ffff8880aec00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000625208 CR3: 0000000067bbc000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 loop_set_fd drivers/block/loop.c:897 [inline]
 lo_ioctl+0xaa6/0x1ce0 drivers/block/loop.c:1407
kobject: 'loop3' (ffff8880a40ed560): fill_kobj_path: path = '/devices/virtual/block/loop3'
 __blkdev_driver_ioctl block/ioctl.c:297 [inline]
 blkdev_ioctl+0x96b/0x1860 block/ioctl.c:594
kobject: 'kvm' (ffff8880a6bfe550): kobject_uevent_env
kobject: 'kvm' (ffff8880a6bfe550): fill_kobj_path: path = '/devices/virtual/misc/kvm'
 block_ioctl+0xde/0x120 fs/block_dev.c:1881
kobject: 'kvm' (ffff8880a6bfe550): kobject_uevent_env
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:500 [inline]
 do_vfs_ioctl+0x7ae/0x1060 fs/ioctl.c:684
kobject: 'kvm' (ffff8880a6bfe550): fill_kobj_path: path = '/devices/virtual/misc/kvm'
 SYSC_ioctl fs/ioctl.c:701 [inline]
 SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692
 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
kobject: 'kvm' (ffff8880a6bfe550): kobject_uevent_env
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45a849
kobject: 'kvm' (ffff8880a6bfe550): fill_kobj_path: path = '/devices/virtual/misc/kvm'
RSP: 002b:00007fd9bbb9cc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a849
RDX: 000000000000000b RSI: 0000000000004c00 RDI: 000000000000000a
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd9bbb9d6d4
R13: 00000000004c43aa R14: 00000000004d9ae0 R15: 00000000ffffffff
kobject: 'kvm' (ffff8880a6bfe550): kobject_uevent_env
Code: 00 00 48 89 
kobject: 'kvm' (ffff8880a6bfe550): fill_kobj_path: path = '/devices/virtual/misc/kvm'
f8 48 c1 e8 03 42 80 3c 30 00 0f 85 d4 00 00 
kobject: 'kvm' (ffff8880a6bfe550): kobject_uevent_env
00 4d 8b a4 24 f0 00 00 00 
kobject: 'kvm' (ffff8880a6bfe550): fill_kobj_path: path = '/devices/virtual/misc/kvm'
49 8d bc 24 b8 01 00 00 48 89 f8 48 c1 e8 03 <42> 80 3c 30 00 0f 85 a8 00 00 00 4d 8b 
kvm [15524]: vcpu0, guest rIP: 0x8a disabled perfctr wrmsr: 0xc1 data 0x4d00000000f
a4 24 b8 01 00 00 4c 89 
RIP: loop_validate_file+0x206/0x2d0 drivers/block/loop.c:633 RSP: ffff88804d31fbc0
kobject: 'loop1' (ffff8880a4038be0): kobject_uevent_env
kvm [15524]: vcpu0, guest rIP: 0x8a disabled perfctr wrmsr: 0xc2 data 0x4d00000000f
kobject: 'loop1' (ffff8880a4038be0): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop2' (ffff8880a40954e0): kobject_uevent_env
kvm [15524]: vcpu0, guest rIP: 0x8a disabled perfctr wrmsr: 0xc2 data 0x4d00000000f
kobject: 'loop2' (ffff8880a40954e0): fill_kobj_path: path = '/devices/virtual/block/loop2'
---[ end trace 8a3727fd76f792c7 ]---
kobject: 'loop2' (ffff8880a40954e0): kobject_uevent_env
kobject: 'kvm' (ffff8880a6bfe550): kobject_uevent_env
kobject: 'loop2' (ffff8880a40954e0): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop2' (ffff8880a40954e0): kobject_uevent_env