kauditd_printk_skb: 2 callbacks suppressed audit: type=1400 audit(1578754924.785:36): avc: denied { map } for pid=7970 comm="syz-executor839" path="/root/syz-executor839806223" dev="sda1" ino=1426 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 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 CPU: 0 PID: 7970 Comm: syz-executor839 Not tainted 4.19.94-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__read_once_size include/linux/compiler.h:193 [inline] RIP: 0010:net_generic include/net/netns/generic.h:45 [inline] RIP: 0010:nf_ct_netns_do_get+0xd3/0x5c0 net/netfilter/nf_conntrack_proto.c:797 Code: 92 73 fb 45 84 ff 0f 84 6f 02 00 00 e8 e6 90 73 fb 49 8d bc 24 48 1b 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 cd 04 00 00 4d 8b bc 24 48 1b 00 00 e8 a6 a1 60 RSP: 0018:ffff888097fe7808 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 0000000000000003 RCX: ffffffff85f7874a RDX: 0000000000000369 RSI: ffffffff85f784ca RDI: 0000000000001b48 RBP: ffff888097fe7838 R08: ffff88809164c4c0 R09: ffffed1015d04733 R10: ffffed1015d04732 R11: ffff8880ae823993 R12: 0000000000000000 R13: 0000000000000003 R14: 0000000000000028 R15: 0000000000000001 FS: 00000000017a4880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000880 CR3: 000000008b4d6000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: nf_ct_netns_get+0x3d/0xc0 net/netfilter/nf_conntrack_proto.c:889 connmark_tg_check+0x61/0xe0 net/netfilter/xt_connmark.c:118 xt_check_target+0x283/0x6a0 net/netfilter/x_tables.c:1024 check_target net/ipv4/netfilter/arp_tables.c:398 [inline] find_check_entry net/ipv4/netfilter/arp_tables.c:421 [inline] translate_table+0x1005/0x1d70 net/ipv4/netfilter/arp_tables.c:571 do_replace net/ipv4/netfilter/arp_tables.c:976 [inline] do_arpt_set_ctl+0x303/0x640 net/ipv4/netfilter/arp_tables.c:1455 nf_sockopt net/netfilter/nf_sockopt.c:106 [inline] nf_setsockopt+0x77/0xd0 net/netfilter/nf_sockopt.c:115 ip_setsockopt net/ipv4/ip_sockglue.c:1258 [inline] ip_setsockopt+0xdf/0x100 net/ipv4/ip_sockglue.c:1238 udp_setsockopt+0x68/0xb0 net/ipv4/udp.c:2548 sock_common_setsockopt+0x94/0xd0 net/core/sock.c:3046 __sys_setsockopt+0x17a/0x280 net/socket.c:1901 __do_sys_setsockopt net/socket.c:1912 [inline] __se_sys_setsockopt net/socket.c:1909 [inline] __x64_sys_setsockopt+0xbe/0x150 net/socket.c:1909 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x440159 Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffd4c712158 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440159 RDX: 0000000000000060 RSI: 0a02000000000000 RDI: 0000000000000003 RBP: 00000000006ca018 R08: 0000000000000001 R09: 00000000004002c8 R10: 0000000020000880 R11: 0000000000000246 R12: 00000000004019e0 R13: 0000000000401a70 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 48df9df439930e6e ]--- RIP: 0010:__read_once_size include/linux/compiler.h:193 [inline] RIP: 0010:net_generic include/net/netns/generic.h:45 [inline] RIP: 0010:nf_ct_netns_do_get+0xd3/0x5c0 net/netfilter/nf_conntrack_proto.c:797 Code: 92 73 fb 45 84 ff 0f 84 6f 02 00 00 e8 e6 90 73 fb 49 8d bc 24 48 1b 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 cd 04 00 00 4d 8b bc 24 48 1b 00 00 e8 a6 a1 60 RSP: 0018:ffff888097fe7808 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 0000000000000003 RCX: ffffffff85f7874a RDX: 0000000000000369 RSI: ffffffff85f784ca RDI: 0000000000001b48 RBP: ffff888097fe7838 R08: ffff88809164c4c0 R09: ffffed1015d04733 R10: ffffed1015d04732 R11: ffff8880ae823993 R12: 0000000000000000 R13: 0000000000000003 R14: 0000000000000028 R15: 0000000000000001 FS: 00000000017a4880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000880 CR3: 000000008b4d6000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400