IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
IPv6: ADDRCONF(NETDEV_UP): veth0: link is not 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 accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 8711 Comm: syz-executor7 Not tainted 4.4.152-ge5c5f1f #25
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8800ae239800 task.stack: ffff8801ca2e0000
RIP: 0010:[<ffffffff8251d54d>]  [<ffffffff8251d54d>] loop_validate_file+0x20d/0x400 drivers/block/loop.c:667
RSP: 0018:ffff8801ca2e7ad0  EFLAGS: 00010206
RAX: 0000000000000036 RBX: dffffc0000000000 RCX: ffff8800ae239800
RDX: 0000000000000000 RSI: ffffffff8251d51d RDI: 00000000000001b0
RBP: ffff8801ca2e7ae8 R08: ffff8800ae23a128 R09: 0000000000000001
R10: 0000000000000000 R11: ffff8800ae239800 R12: 0000000000000000
R13: ffff8800b9c861c0 R14: ffff8800b9c861c0 R15: ffff8801d6a2d7d8
FS:  0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000084e7900
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000020ca9ff5 CR3: 00000001d0576000 CR4: 00000000001606f0
Stack:
 ffff8801d6a2d680 ffff8801d9489e00 0000000000000004 ffff8801ca2e7b78
 ffffffff82523aad ffff8801ca2e7af0 ffff880100000000 ffffffff00000000
 ffffffff81034676 ffff8801d6a2d698 ffffffff814fe102 5ce5133e709abb41
Call Trace:
 [<ffffffff82523aad>] loop_change_fd drivers/block/loop.c:713 [inline]
 [<ffffffff82523aad>] lo_ioctl+0x3ed/0x16c0 drivers/block/loop.c:1370
 [<ffffffff82524e32>] lo_compat_ioctl+0xb2/0x140 drivers/block/loop.c:1560
 [<ffffffff81e07af5>] compat_blkdev_ioctl+0x395/0x3a10 block/compat_ioctl.c:751
 [<ffffffff8162e354>] C_SYSC_ioctl fs/compat_ioctl.c:1592 [inline]
 [<ffffffff8162e354>] compat_SyS_ioctl+0x484/0x2270 fs/compat_ioctl.c:1544
 [<ffffffff81006d94>] do_syscall_32_irqs_on arch/x86/entry/common.c:393 [inline]
 [<ffffffff81006d94>] do_fast_syscall_32+0x324/0x8b0 arch/x86/entry/common.c:460
 [<ffffffff838cdec3>] sysenter_flags_fixed+0xd/0x1a
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  [<ffffffff8251d54d>] loop_validate_file+0x20d/0x400 drivers/block/loop.c:667
 RSP <ffff8801ca2e7ad0>
---[ end trace 5ffc796f92c8d191 ]---