XFS (loop7): Mounting V4 Filesystem
XFS (loop7): Log size -64064 blocks too large, maximum size is 1048576 blocks
XFS (loop7): Log size out of supported range.
XFS (loop7): Continuing onwards, but if log hangs are experienced then please report this message in the bug report.
------------[ cut here ]------------
kernel BUG at mm/vmscan.c:593!
invalid opcode: 0000 [#1] SMP KASAN
CPU: 1 PID: 28740 Comm: syz-executor1 Not tainted 4.18.0-rc3-next-20180706+ #1
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:shrink_slab_memcg mm/vmscan.c:593 [inline]
RIP: 0010:shrink_slab+0xb3e/0xdb0 mm/vmscan.c:672
Code: 8d a8 fd ff ff f0 48 0f b3 08 e8 3d b8 da ff 48 8b 85 c0 fd ff ff c7 00 f8 f8 f8 f8 c6 40 04 f8 e9 5d fb ff ff e8 22 b8 da ff <0f> 0b e8 1b b8 da ff 48 8b 9d d8 fd ff ff 31 ff 48 89 de e8 3a b9 
RSP: 0018:ffff8801af5070b8 EFLAGS: 00010212
RAX: 0000000000040000 RBX: ffff8801af507308 RCX: ffffc9000241f000
RDX: 00000000000008ed RSI: ffffffff81a1c23e RDI: 0000000000000007
RBP: ffff8801af507330 R08: ffff8801cad86500 R09: ffffed0039830288
R10: ffffed0039830288 R11: ffff8801cc181447 R12: dffffc0000000000
R13: ffff8801cc3351f0 R14: 0000000000000000 R15: ffff8801af507148
XFS (loop7): Invalid block length (0x1) for buffer
FS:  00007f6a21fae700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2f322000 CR3: 00000001c8dc3000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
XFS (loop7): empty log check failed
XFS (loop7): log mount/recovery failed: error -12
XFS (loop5): Invalid superblock magic number
 shrink_node+0x429/0x16a0 mm/vmscan.c:2736
XFS (loop7): log mount failed
 shrink_zones mm/vmscan.c:2965 [inline]
 do_try_to_free_pages+0x3e7/0x1290 mm/vmscan.c:3027
 try_to_free_mem_cgroup_pages+0x49d/0xc90 mm/vmscan.c:3325
 memory_high_write+0x283/0x310 mm/memcontrol.c:5597
 cgroup_file_write+0x31f/0x840 kernel/cgroup/cgroup.c:3500
 kernfs_fop_write+0x2ba/0x480 fs/kernfs/file.c:316
 __vfs_write+0x117/0x9f0 fs/read_write.c:485
 vfs_write+0x1fc/0x560 fs/read_write.c:549
 ksys_write+0x101/0x260 fs/read_write.c:598
 __do_sys_write fs/read_write.c:610 [inline]
 __se_sys_write fs/read_write.c:607 [inline]
 __x64_sys_write+0x73/0xb0 fs/read_write.c:607
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x455ba9
Code: 1d ba fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb b9 fb ff c3 66 2e 0f 1f 84 00 00 00 00 
RSP: 002b:00007f6a21fadc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f6a21fae6d4 RCX: 0000000000455ba9
RDX: 0000000000000000 RSI: 0000000020000740 RDI: 0000000000000014
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004c28ce R14: 00000000004d4238 R15: 0000000000000000
Modules linked in:
Dumping ftrace buffer:
   (ftrace buffer empty)
---[ end trace 2672b45ee2f3163c ]---
RIP: 0010:shrink_slab_memcg mm/vmscan.c:593 [inline]
RIP: 0010:shrink_slab+0xb3e/0xdb0 mm/vmscan.c:672
Code: 8d a8 fd ff ff f0 48 0f b3 08 e8 3d b8 da ff 48 8b 85 c0 fd ff ff c7 00 f8 f8 f8 f8 c6 40 04 f8 e9 5d fb ff ff e8 22 b8 da ff <0f> 0b e8 1b b8 da ff 48 8b 9d d8 fd ff ff 31 ff 48 89 de e8 3a b9 
RSP: 0018:ffff8801af5070b8 EFLAGS: 00010212
RAX: 0000000000040000 RBX: ffff8801af507308 RCX: ffffc9000241f000
RDX: 00000000000008ed RSI: ffffffff81a1c23e RDI: 0000000000000007
RBP: ffff8801af507330 R08: ffff8801cad86500 R09: ffffed0039830288
R10: ffffed0039830288 R11: ffff8801cc181447 R12: dffffc0000000000
R13: ffff8801cc3351f0 R14: 0000000000000000 R15: ffff8801af507148
FS:  00007f6a21fae700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2f322000 CR3: 00000001c8dc3000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400