IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
print_req_error: I/O error, dev loop3, sector 32048
general protection fault: 0000 [#1] SMP KASAN
Buffer I/O error on dev loop3, logical block 4006, lost async page write
CPU: 0 PID: 4799 Comm: syz-executor4 Not tainted 4.18.0-rc5+ #57
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:loop_validate_file+0x247/0x470 drivers/block/loop.c:664
Code: 00 00 48 89 f8 48 c1 e8 03 80 3c 18 00 0f 85 2e 02 00 00 4d 8b a4 24 f0 00 00 00 49 8d bc 24 b8 01 00 00 48 89 f8 48 c1 e8 03 <80> 3c 18 00 0f 85 03 02 00 00 4d 8b a4 24 b8 01 00 00 4c 89 e0 48 
RSP: 0018:ffff8801acae7be0 EFLAGS: 00010202
RAX: 0000000000000037 RBX: dffffc0000000000 RCX: ffffffff84c24809
RDX: 0000000000000000 RSI: ffffffff84c24817 RDI: 00000000000001b8
RBP: ffff8801acae7c00 R08: ffff8801acb700c0 R09: ffffed003b5c46d6
R10: 0000000000000003 R11: 0000000000000001 R12: 0000000000000000
R13: ffff8801d289e300 R14: 0000000000000002 R15: ffff8801ad71ccc0
FS:  0000000000000000(0000) GS:ffff8801dae00000(0063) knlGS:00000000f7eecb40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f7eebc20 CR3: 00000001ad6c5000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 loop_set_fd drivers/block/loop.c:928 [inline]
 lo_ioctl+0x54d/0x1d10 drivers/block/loop.c:1411
 lo_compat_ioctl+0xbb/0x170 drivers/block/loop.c:1617
 compat_blkdev_ioctl+0x3ca/0x1b30 block/compat_ioctl.c:406
 __do_compat_sys_ioctl fs/compat_ioctl.c:1459 [inline]
 __se_compat_sys_ioctl fs/compat_ioctl.c:1405 [inline]
 __ia32_compat_sys_ioctl+0x221/0x640 fs/compat_ioctl.c:1405
 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline]
 do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7f32cb9
Code: 55 08 8b 88 64 cd ff ff 8b 98 68 cd ff ff 89 c8 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 1c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 
RSP: 002b:00000000f7eec0ac EFLAGS: 00000282 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000004c00
RDX: 0000000000000003 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
Dumping ftrace buffer:
   (ftrace buffer empty)
---[ end trace 2e80c5795804a42a ]---
RIP: 0010:loop_validate_file+0x247/0x470 drivers/block/loop.c:664
Code: 00 00 48 89 f8 48 c1 e8 03 80 3c 18 00 0f 85 2e 02 00 00 4d 8b a4 24 f0 00 00 00 49 8d bc 24 b8 01 00 00 48 89 f8 48 c1 e8 03 <80> 3c 18 00 0f 85 03 02 00 00 4d 8b a4 24 b8 01 00 00 4c 89 e0 48 
RSP: 0018:ffff8801acae7be0 EFLAGS: 00010202
RAX: 0000000000000037 RBX: dffffc0000000000 RCX: ffffffff84c24809
RDX: 0000000000000000 RSI: ffffffff84c24817 RDI: 00000000000001b8
RBP: ffff8801acae7c00 R08: ffff8801acb700c0 R09: ffffed003b5c46d6
R10: 0000000000000003 R11: 0000000000000001 R12: 0000000000000000
R13: ffff8801d289e300 R14: 0000000000000002 R15: ffff8801ad71ccc0
FS:  0000000000000000(0000) GS:ffff8801dae00000(0063) knlGS:00000000f7eecb40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f7eebc20 CR3: 00000001ad6c5000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400