SELinux: unrecognized netlink message: protocol=0 nlmsg_type=37627 sclass=netlink_route_socket pig=22307 comm=syz-executor7
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
blk_update_request: I/O error, dev loop4, sector 1152
Buffer I/O error on dev loop4, logical block 144, lost async page write
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 22308 Comm: syz-executor2 Not tainted 4.9.117-g8b21e85 #71
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff880146c98000 task.stack: ffff880157518000
RIP: 0010:[<ffffffff825c6bcd>]  [<ffffffff825c6bcd>] loop_validate_file+0x20d/0x400 drivers/block/loop.c:656
RSP: 0018:ffff88015751fae0  EFLAGS: 00010206
RAX: 0000000000000036 RBX: dffffc0000000000 RCX: ffffc90007777000
RDX: 000000000000008d RSI: ffffffff825c6b9d RDI: 00000000000001b0
RBP: ffff88015751faf8 R08: ffff880146c98910 R09: 0000000000000001
R10: 0000000000000000 R11: 1ffff10028d9311d R12: 0000000000000000
R13: ffff8801cbf85080 R14: ffff8801cbf85080 R15: ffff8801c124d7d8
FS:  00007f233b140700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0e57a56169 CR3: 00000001abc50000 CR4: 00000000001606f0
netlink: 12 bytes leftover after parsing attributes in process `syz-executor4'.
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=26907 sclass=netlink_route_socket pig=22329 comm=syz-executor4
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffff8801c124d680 0000000000004c00 ffff8801a5924000 ffff88015751fb80
 ffffffff825cc5d7 ffff880146c988e0 ffff880146c988b8 0000000000930000
 ffff88015751fde0 ffff88015751fb80 ffff8801c124d7d0 1ffff1002aea3f6c
Call Trace:
 [<ffffffff825cc5d7>] loop_set_fd drivers/block/loop.c:909 [inline]
 [<ffffffff825cc5d7>] lo_ioctl+0x6a7/0x1690 drivers/block/loop.c:1356
 [<ffffffff81e587e6>] __blkdev_driver_ioctl block/ioctl.c:294 [inline]
 [<ffffffff81e587e6>] blkdev_ioctl+0x7b6/0x1a70 block/ioctl.c:590
 [<ffffffff816330ee>] block_ioctl+0xde/0x120 fs/block_dev.c:1688
 [<ffffffff815b309c>] vfs_ioctl fs/ioctl.c:43 [inline]
 [<ffffffff815b309c>] file_ioctl fs/ioctl.c:493 [inline]
 [<ffffffff815b309c>] do_vfs_ioctl+0x1ac/0x11a0 fs/ioctl.c:677
 [<ffffffff815b411f>] SYSC_ioctl fs/ioctl.c:694 [inline]
 [<ffffffff815b411f>] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:685
 [<ffffffff81006316>] do_syscall_64+0x1a6/0x490 arch/x86/entry/common.c:282
 [<ffffffff839fcc13>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
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 <ffff88015751fae0>
---[ end trace 09508030ffbeee47 ]---