audit: type=1400 audit(1546590576.580:32): lsm=SMACK fn=smack_socket_sock_rcv_skb action=denied subject="_" object="keyring" requested=w pid=8728 comm="syz-executor2" saddr=::1 src=20000 daddr=::1 dest=34572 netif=lo
kasan: CONFIG_KASAN_INLINE enabled
kvm: apic: phys broadcast and lowest prio
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 8736 Comm: syz-executor2 Not tainted 4.20.0+ #8
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:dev_net include/linux/netdevice.h:2169 [inline]
RIP: 0010:icmp6_send+0x116/0x2d30 net/ipv6/icmp.c:426
Code: e8 03 42 80 3c 20 00 0f 85 95 26 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 10 49 8d bc 24 80 05 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 53 26 00 00 48 8d 8b b4 00 00 00 4d 8b bc 24 80
RSP: 0018:ffff888050cf7340 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff888085f35d40 RCX: ffffc90009ffa000
RDX: 00000000000000b0 RSI: ffffffff86d564cf RDI: 0000000000000580
RBP: ffff888050cf75e0 R08: 0000000000000000 R09: ffffed1015ce5b90
R10: ffff888050cf75f8 R11: ffff8880ae72dc7b R12: 0000000000000000
R13: ffff888085f35d40 R14: 0000000000000000 R15: 0000000000000001
FS:  00007fc316317700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007feb6d255000 CR3: 000000008789c000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 icmpv6_send+0x17e/0x310 net/ipv6/ip6_icmp.c:43
 smack_socket_sock_rcv_skb+0x7d7/0xbe6 security/smack/smack_lsm.c:4022
 security_sock_rcv_skb+0x71/0xb0 security/security.c:1457
 sk_filter_trim_cap+0xee/0xa60 net/core/filter.c:108
 sk_filter include/linux/filter.h:720 [inline]
 dccp_v6_do_rcv+0x100/0xbf0 net/dccp/ipv6.c:584
 sk_backlog_rcv include/net/sock.h:932 [inline]
 __release_sock+0x12e/0x3a0 net/core/sock.c:2284
 release_sock+0xac/0x2b0 net/core/sock.c:2797
 inet_wait_for_connect net/ipv4/af_inet.c:588 [inline]
 __inet_stream_connect+0x694/0x11b0 net/ipv4/af_inet.c:680
 inet_stream_connect+0x58/0xa0 net/ipv4/af_inet.c:719
 __sys_connect+0x357/0x490 net/socket.c:1664
 __do_sys_connect net/socket.c:1675 [inline]
 __se_sys_connect net/socket.c:1672 [inline]
 __x64_sys_connect+0x73/0xb0 net/socket.c:1672
 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457ec9
Code: 6d b7 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 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fc316316c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457ec9
RDX: 000000000000001c RSI: 0000000020419000 RDI: 0000000000000005
RBP: 000000000073bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc3163176d4
R13: 00000000004be317 R14: 00000000004ce570 R15: 00000000ffffffff
Modules linked in:
kobject: 'loop3' (00000000d8e29d0b): kobject_uevent_env
kobject: 'loop3' (00000000d8e29d0b): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop5' (000000008b091a16): kobject_uevent_env
kobject: 'loop5' (000000008b091a16): fill_kobj_path: path = '/devices/virtual/block/loop5'
---[ end trace 4a669fabf28eb692 ]---
RIP: 0010:dev_net include/linux/netdevice.h:2169 [inline]
RIP: 0010:icmp6_send+0x116/0x2d30 net/ipv6/icmp.c:426
Code: e8 03 42 80 3c 20 00 0f 85 95 26 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 10 49 8d bc 24 80 05 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 53 26 00 00 48 8d 8b b4 00 00 00 4d 8b bc 24 80
RSP: 0018:ffff888050cf7340 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff888085f35d40 RCX: ffffc90009ffa000
RDX: 00000000000000b0 RSI: ffffffff86d564cf RDI: 0000000000000580
RBP: ffff888050cf75e0 R08: 0000000000000000 R09: ffffed1015ce5b90
R10: ffff888050cf75f8 R11: ffff8880ae72dc7b R12: 0000000000000000
R13: ffff888085f35d40 R14: 0000000000000000 R15: 0000000000000001
FS:  00007fc316317700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000001d6afd0 CR3: 000000008789c000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
kobject: 'loop1' (000000009ee54009): kobject_uevent_env
kobject: 'loop1' (000000009ee54009): fill_kobj_path: path = '/devices/virtual/block/loop1'
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400