detected buffer overflow in strlen
------------[ cut here ]------------
NFS: bad mount option value specified: v|
kernel BUG at lib/string.c:1051!
invalid opcode: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
netlink: 5 bytes leftover after parsing attributes in process `syz-executor2'.
   (ftrace buffer empty)
netlink: 5 bytes leftover after parsing attributes in process `syz-executor2'.
Modules linked in:
CPU: 1 PID: 28630 Comm: syz-executor3 Not tainted 4.14.0-rc2+ #20
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801bf298580 task.stack: ffff8801c8c68000
RIP: 0010:fortify_panic+0x13/0x20 lib/string.c:1050
RSP: 0018:ffff8801c8c6f9b0 EFLAGS: 00010282
RAX: 0000000000000022 RBX: 1ffff1003918df3a RCX: 0000000000000000
RDX: 0000000000000022 RSI: ffffffff8158b26e RDI: ffffed003918df2a
RBP: ffff8801c8c6f9b0 R08: ffff8801c8c6f0a0 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000024
R13: dffffc0000000000 R14: 0000000000001000 R15: ffff8801c8c6faf8
FS:  0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000f77eab40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000dbc21000 CR3: 00000001c3848000 CR4: 00000000001406e0
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 strlen include/linux/string.h:265 [inline]
 strlcpy include/linux/string.h:288 [inline]
 xt_copy_counters_from_user+0x38d/0x3b0 net/netfilter/x_tables.c:895
 do_add_counters+0x96/0x550 net/ipv6/netfilter/ip6_tables.c:1181
 compat_do_ip6t_set_ctl+0xc5/0x150 net/ipv6/netfilter/ip6_tables.c:1556
 compat_nf_sockopt net/netfilter/nf_sockopt.c:143 [inline]
 compat_nf_setsockopt+0x88/0x130 net/netfilter/nf_sockopt.c:155
 compat_ipv6_setsockopt+0x13a/0x1e0 net/ipv6/ipv6_sockglue.c:954
 inet_csk_compat_setsockopt+0x95/0x120 net/ipv4/inet_connection_sock.c:1045
 compat_tcp_setsockopt+0x3d/0x70 net/ipv4/tcp.c:2810
 compat_sock_common_setsockopt+0xb2/0x140 net/core/sock.c:2971
 C_SYSC_setsockopt net/compat.c:403 [inline]
 compat_SyS_setsockopt+0x17c/0x410 net/compat.c:386
 do_syscall_32_irqs_on arch/x86/entry/common.c:329 [inline]
 do_fast_syscall_32+0x3f2/0xf05 arch/x86/entry/common.c:391
 entry_SYSENTER_compat+0x51/0x60 arch/x86/entry/entry_64_compat.S:124
netlink: 5 bytes leftover after parsing attributes in process `syz-executor6'.
netlink: 5 bytes leftover after parsing attributes in process `syz-executor2'.
netlink: 5 bytes leftover after parsing attributes in process `syz-executor6'.
netlink: 5 bytes leftover after parsing attributes in process `syz-executor2'.
RIP: 0023:0xf7feec79
RSP: 002b:00000000f77ea05c EFLAGS: 00000296 ORIG_RAX: 000000000000016e
RAX: ffffffffffffffda RBX: 0000000000000016 RCX: 0000000000000029
RDX: 0000000000000041 RSI: 0000000020f85000 RDI: 0000000000001000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Code: 08 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 0b 48 89 df e8 e2 8d d1 fc eb de 55 48 89 fe 48 c7 c7 80 0e 4a 85 48 89 e5 e8 d2 84 87 fc <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 41 57 41 56 
RIP: fortify_panic+0x13/0x20 lib/string.c:1050 RSP: ffff8801c8c6f9b0
---[ end trace 44809bf44dbffbae ]---
netlink: 5 bytes leftover after parsing attributes in process `syz-executor6'.
netlink: 5 bytes leftover after parsing attributes in process `syz-executor6'.
handle_userfault: 45 callbacks suppressed
FAULT_FLAG_ALLOW_RETRY missing 70
CPU: 1 PID: 28631 Comm: syz-executor0 Tainted: G      D         4.14.0-rc2+ #20
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:16 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:52
 handle_userfault+0x11ec/0x23a0 fs/userfaultfd.c:427
 do_anonymous_page mm/memory.c:3095 [inline]
 handle_pte_fault mm/memory.c:3908 [inline]
 __handle_mm_fault+0x2d46/0x39c0 mm/memory.c:4034
 handle_mm_fault+0x334/0x8d0 mm/memory.c:4071
 __do_page_fault+0x4f6/0xb60 arch/x86/mm/fault.c:1444
 do_page_fault+0xee/0x720 arch/x86/mm/fault.c:1519
 page_fault+0x22/0x30 arch/x86/entry/entry_64.S:1066
RIP: 0023:0x8073f4f
RSP: 002b:00000000f77b5bd0 EFLAGS: 00010206
RAX: 00000000f77b5c8c RBX: 0000000000000400 RCX: 0000000000000007
RDX: 00000000f77b6a88 RSI: 0000000020012ff0 RDI: 00000000f77b5c8c
RBP: 0000000008128000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FAULT_FLAG_ALLOW_RETRY missing 20
CPU: 0 PID: 28639 Comm: syz-executor0 Tainted: G      D         4.14.0-rc2+ #20
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:16 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:52
 handle_userfault+0x11ec/0x23a0 fs/userfaultfd.c:427
 do_anonymous_page mm/memory.c:3095 [inline]
 handle_pte_fault mm/memory.c:3908 [inline]
 __handle_mm_fault+0x2d46/0x39c0 mm/memory.c:4034
 handle_mm_fault+0x334/0x8d0 mm/memory.c:4071
 faultin_page mm/gup.c:502 [inline]
 __get_user_pages+0x50c/0x15f0 mm/gup.c:699
 __get_user_pages_locked mm/gup.c:910 [inline]
 __get_user_pages_unlocked mm/gup.c:984 [inline]
 get_user_pages_unlocked+0x23d/0x460 mm/gup.c:1009
 get_user_pages_fast+0x91/0xd0 mm/gup.c:1752
 get_futex_key+0x461/0x1d50 kernel/futex.c:547
 futex_requeue+0x38a/0x2370 kernel/futex.c:1884
 do_futex+0x7f5/0x20d0 kernel/futex.c:3477
 C_SYSC_futex kernel/futex_compat.c:200 [inline]
 compat_SyS_futex+0x27f/0x380 kernel/futex_compat.c:174
 do_syscall_32_irqs_on arch/x86/entry/common.c:329 [inline]
 do_fast_syscall_32+0x3f2/0xf05 arch/x86/entry/common.c:391
 entry_SYSENTER_compat+0x51/0x60 arch/x86/entry/entry_64_compat.S:124
RIP: 0023:0xf7fbac79
RSP: 002b:00000000f779505c EFLAGS: 00000296 ORIG_RAX: 00000000000000f0
RAX: ffffffffffffffda RBX: 0000000020013ffc RCX: 0000000000000004
RDX: 0000000000000031 RSI: 0000000020002ff0 RDI: 0000000020000000
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000