kernel msg: ebtables bug: please report to author: Wrong len argument
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
BUG: unable to handle kernel paging request at ffff8802cb2c8e87
CPU: 1 PID: 29457 Comm: syz-executor0 Not tainted 4.16.0-rc6+ #287
IP: slab_put_obj mm/slab.c:2612 [inline]
IP: free_block+0x158/0x280 mm/slab.c:3405
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
PGD a837067 
Call Trace:
P4D a837067 
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x194/0x24d lib/dump_stack.c:53
PUD 0 
Oops: 0002 [#1] SMP KASAN
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail+0x8c0/0xa40 lib/fault-inject.c:149
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 2727 Comm: udevd Not tainted 4.16.0-rc6+ #287
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:slab_put_obj mm/slab.c:2612 [inline]
RIP: 0010:free_block+0x158/0x280 mm/slab.c:3405
RSP: 0018:ffff8801b49bfa58 EFLAGS: 00010086
RAX: 0000000000000000 RBX: ffff8801db033dd0 RCX: 00000000ffffffff
RDX: ffff8801cb2c8e88 RSI: ffff8801cb2c8e88 RDI: 0000000000000000
RBP: ffff8801b49bfaa0 R08: 00000000072cb200 R09: ffff8801dac01a58
R10: ffff8801b49bf968 R11: ffff8801dac01a18 R12: ffff8801dac00dc0
R13: ffffea00072cb220 R14: ffff8801dac01a00 R15: ffffea00072cb200
FS:  00007f4a8a40c7a0(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000
 should_failslab+0xec/0x120 mm/failslab.c:32
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 slab_pre_alloc_hook mm/slab.h:422 [inline]
 slab_alloc mm/slab.c:3365 [inline]
 kmem_cache_alloc_trace+0x4b/0x740 mm/slab.c:3605
CR2: ffff8802cb2c8e87 CR3: 00000001b4999004 CR4: 00000000001606f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 cache_flusharray mm/slab.c:3456 [inline]
 ___cache_free+0x20a/0x2f0 mm/slab.c:3514
 qlink_free mm/kasan/quarantine.c:147 [inline]
 qlist_free_all+0x8c/0x160 mm/kasan/quarantine.c:166
 kmalloc include/linux/slab.h:512 [inline]
 kzalloc include/linux/slab.h:701 [inline]
 proc_net_ns_init+0x4b/0x3b0 fs/proc/proc_net.c:195
 quarantine_reduce+0x141/0x170 mm/kasan/quarantine.c:259
 kasan_kmalloc+0xca/0xe0 mm/kasan/kasan.c:537
 ops_init+0xec/0x500 net/core/net_namespace.c:127
 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:489
 slab_post_alloc_hook mm/slab.h:443 [inline]
 slab_alloc mm/slab.c:3379 [inline]
 kmem_cache_alloc+0x11b/0x760 mm/slab.c:3539
 getname_flags+0xcb/0x580 fs/namei.c:138
 user_path_at_empty+0x2d/0x50 fs/namei.c:2569
 setup_net+0x37a/0x8c0 net/core/net_namespace.c:312
 SYSC_readlinkat fs/stat.c:394 [inline]
 SyS_readlinkat fs/stat.c:382 [inline]
 SYSC_readlink fs/stat.c:421 [inline]
 SyS_readlink+0x12d/0x3a0 fs/stat.c:418
 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
 copy_net_ns+0x272/0x430 net/core/net_namespace.c:435
RIP: 0033:0x7f4a89b15577
RSP: 002b:00007ffc1874b168 EFLAGS: 00000246
 ORIG_RAX: 0000000000000059
 create_new_namespaces+0x425/0x880 kernel/nsproxy.c:107
RAX: ffffffffffffffda RBX: 0000000000919250 RCX: 00007f4a89b15577
RDX: 0000000000000400 RSI: 00007ffc1874b6b0 RDI: 00007ffc1874bb50
RBP: 00007ffc1874bb50 R08: 0000000000929925 R09: 00007f4a89b6a3d0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000929920
R13: 00000000ffffffea R14: 00007ffc1874b2b0 R15: 00007ffc1874b6b0
Code: 
 unshare_nsproxy_namespaces+0xae/0x1e0 kernel/nsproxy.c:206
0f 
 SYSC_unshare kernel/fork.c:2407 [inline]
 SyS_unshare+0x653/0xfa0 kernel/fork.c:2357
b6 
4c 
24 
1c 
48 
c1 
ee 
20 
29 
f0 
d3 
e8 
 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287
41 
0f 
b6 
4c 
24 
1d 
01 
f0 
49 
8b 
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
77 
RIP: 0033:0x454e79
10 d3 e8 8d 
RSP: 002b:00007fcab4087c68 EFLAGS: 00000246
4f 
 ORIG_RAX: 0000000000000110
ff 
RAX: ffffffffffffffda RBX: 00007fcab40886d4 RCX: 0000000000454e79
48 
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000060000000
85 
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
f6 
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000013
41 
R13: 00000000000006a5 R14: 00000000006fc018 R15: 0000000000000004
kernel msg: ebtables bug: please report to author: Wrong len argument
89 4f 18 0f 84 05 01 00 00 <88> 04 0e 41 8b 47 18 85 c0 0f 84 e0 fe ff ff 49 8b 4e 40 4d 8d 
RIP: slab_put_obj mm/slab.c:2612 [inline] RSP: ffff8801b49bfa58
RIP: free_block+0x158/0x280 mm/slab.c:3405 RSP: ffff8801b49bfa58
CR2: ffff8802cb2c8e87
---[ end trace d2ddcd97f0e49b85 ]---