XFS (loop5): unknown mount option [allocsize=].
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
Modules linked in:
CPU: 0 PID: 23143 Comm: syz-executor.1 Not tainted 4.14.146 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8880600ce280 task.stack: ffff88805ee20000
RIP: 0010:loop_validate_file+0x206/0x2d0 drivers/block/loop.c:633
RSP: 0018:ffff88805ee27bc0 EFLAGS: 00010202
RAX: 0000000000000037 RBX: ffff888095ae2818 RCX: ffffc9000623f000
RDX: 00000000000000db RSI: ffffffff837334e5 RDI: 00000000000001b8
RBP: ffff88805ee27be0 R08: ffff8880600ce280 R09: 0000000000000001
R10: 0000000000000000 R11: ffff8880600ce280 R12: 0000000000000000
R13: ffff8880aa404040 R14: dffffc0000000000 R15: ffff8880a4a99c50
FS:  00007fb1e0f9d700(0000) GS:ffff8880aee00000(0000) knlGS:0000000000000000
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'.
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000625208 CR3: 00000000998c6000 CR4: 00000000001406f0
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
 __blkdev_driver_ioctl block/ioctl.c:297 [inline]
 blkdev_ioctl+0x96b/0x1860 block/ioctl.c:594
 block_ioctl+0xde/0x120 fs/block_dev.c:1881
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:500 [inline]
 do_vfs_ioctl+0x7ae/0x1060 fs/ioctl.c:684
 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
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x459a09
RSP: 002b:00007fb1e0f9cc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459a09
RDX: 0000000000000007 RSI: 0000000000004c00 RDI: 0000000000000008
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb1e0f9d6d4
R13: 00000000004c30f1 R14: 00000000004d69c8 R15: 00000000ffffffff
Code: 00 00 48 89 f8 48 c1 e8 03 42 80 3c 30 00 0f 85 d4 00 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 <42> 80 3c 30 00 0f 85 a8 00 00 00 4d 8b a4 24 b8 01 00 00 4c 89 
RIP: loop_validate_file+0x206/0x2d0 drivers/block/loop.c:633 RSP: ffff88805ee27bc0
kobject: 'loop4' (ffff8880a4aea0e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b229e0): kobject_uevent_env
kobject: 'loop4' (ffff8880a4aea0e0): fill_kobj_path: path = '/devices/virtual/block/loop4'
---[ end trace 2ec3a32eb557b947 ]---
kobject: 'loop5' (ffff8880a4b229e0): fill_kobj_path: path = '/devices/virtual/block/loop5'