IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 13874 Comm: syz-executor4 Not tainted 4.9.117-g8b21e85 #23
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801d5059800 task.stack: ffff8801ce9d0000
RIP: 0010:[<ffffffff825c6bcd>]  [<ffffffff825c6bcd>] loop_validate_file+0x20d/0x400 drivers/block/loop.c:656
RSP: 0018:ffff8801ce9d7c80  EFLAGS: 00010206
RAX: 0000000000000036 RBX: dffffc0000000000 RCX: ffff8801d5059800
RDX: 0000000000000000 RSI: ffffffff825c6b9d RDI: 00000000000001b0
RBP: ffff8801ce9d7c98 R08: ffff8801d505a110 R09: 0000000000000001
R10: 0000000000000000 R11: 1ffff1003aa0b41d R12: 0000000000000000
R13: ffff8801d5da33c0 R14: ffff8801d5da33c0 R15: ffff8801d3954ed8
FS:  0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000f77b6b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000080e809c CR3: 00000001bbb4a000 CR4: 00000000001606f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffff8801d3954d80 ffff8801d6de7000 0000000000000004 ffff8801ce9d7d20
 ffffffff825cc31d 0000000000000046 0000000000000000 ffff8801d4174590
 ffff8801d3954d98 ffff8801d3f0e3a0 0000000000000000 f56553fe6a56d2ec
Call Trace:
 [<ffffffff825cc31d>] loop_change_fd drivers/block/loop.c:702 [inline]
 [<ffffffff825cc31d>] lo_ioctl+0x3ed/0x1690 drivers/block/loop.c:1359
 [<ffffffff825cd672>] lo_compat_ioctl+0xb2/0x140 drivers/block/loop.c:1549
 [<ffffffff81ea6395>] compat_blkdev_ioctl+0x3a5/0x3ad0 block/compat_ioctl.c:751
 [<ffffffff8168ecf6>] C_SYSC_ioctl fs/compat_ioctl.c:1602 [inline]
 [<ffffffff8168ecf6>] compat_SyS_ioctl+0x126/0x1fe0 fs/compat_ioctl.c:1549
 [<ffffffff81006da7>] do_syscall_32_irqs_on arch/x86/entry/common.c:325 [inline]
 [<ffffffff81006da7>] do_fast_syscall_32+0x2f7/0x870 arch/x86/entry/common.c:387
 [<ffffffff839fe310>] entry_SYSENTER_compat+0x90/0xa2 arch/x86/entry/entry_64_compat.S:137
Code: 00 00 00 48 89 f8 48 c1 e8 03 80 3c 18 00 0f 85 f7 01 00 00 4d 8b a4 24 f0 00 00 00 49 8d bc 24 b0 01 00 00 48 89 f8 48 c1 e8 03 <80> 3c 18 00 0f 85 cc 01 00 00 4d 8b a4 24 b0 01 00 00 4c 89 e0 
RIP  [<ffffffff825c6bcd>] loop_validate_file+0x20d/0x400 drivers/block/loop.c:656
 RSP <ffff8801ce9d7c80>
---[ end trace 4b5a22e898c21dcd ]---