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: 8968 Comm: syz-executor781 Not tainted 5.5.0-rc2-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:199 [inline] RIP: 0010:net_generic include/net/netns/generic.h:45 [inline] RIP: 0010:nf_ct_netns_do_get+0xd2/0x7e0 net/netfilter/nf_conntrack_proto.c:449 Code: 22 22 fb 45 84 f6 0f 84 5c 03 00 00 e8 07 21 22 fb 49 8d bc 24 68 13 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 9f 06 00 00 4d 8b b4 24 68 13 00 00 e8 47 59 0e RSP: 0018:ffffc90001ec77a8 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000003 RCX: ffffffff86531056 RDX: 000000000000026d RSI: ffffffff86530ce9 RDI: 0000000000001368 RBP: ffffc90001ec77e8 R08: ffff888093976080 R09: ffffed1015d0703d R10: ffffed1015d0703c R11: ffff8880ae8381e3 R12: 0000000000000000 R13: 000000000000002a R14: 0000000000000001 R15: 0000000000000003 FS: 000000000265f880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200008a0 CR3: 000000009f6d5000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: nf_ct_netns_get+0x41/0x150 net/netfilter/nf_conntrack_proto.c:601 connmark_tg_check+0x61/0xe0 net/netfilter/xt_connmark.c:106 xt_check_target+0x283/0x690 net/netfilter/x_tables.c:1019 check_target net/ipv4/netfilter/arp_tables.c:399 [inline] find_check_entry net/ipv4/netfilter/arp_tables.c:422 [inline] translate_table+0x1005/0x1d70 net/ipv4/netfilter/arp_tables.c:572 do_replace net/ipv4/netfilter/arp_tables.c:977 [inline] do_arpt_set_ctl+0x310/0x640 net/ipv4/netfilter/arp_tables.c:1456 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:1260 [inline] ip_setsockopt+0xdf/0x100 net/ipv4/ip_sockglue.c:1240 udp_setsockopt+0x68/0xb0 net/ipv4/udp.c:2639 sock_common_setsockopt+0x94/0xd0 net/core/sock.c:3149 __sys_setsockopt+0x261/0x4c0 net/socket.c:2117 __do_sys_setsockopt net/socket.c:2133 [inline] __se_sys_setsockopt net/socket.c:2130 [inline] __x64_sys_setsockopt+0xbe/0x150 net/socket.c:2130 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x441369 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:00007ffc1bd9ae08 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000441369 RDX: 0000000000000060 RSI: 0a02000000000000 RDI: 0000000000000003 RBP: 00000000006cb018 R08: 0000000000000418 R09: 00000000004002c8 R10: 0000000020000880 R11: 0000000000000246 R12: 0000000000402bf0 R13: 0000000000402c80 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 313dd2c0a14772c9 ]--- RIP: 0010:__read_once_size include/linux/compiler.h:199 [inline] RIP: 0010:net_generic include/net/netns/generic.h:45 [inline] RIP: 0010:nf_ct_netns_do_get+0xd2/0x7e0 net/netfilter/nf_conntrack_proto.c:449 Code: 22 22 fb 45 84 f6 0f 84 5c 03 00 00 e8 07 21 22 fb 49 8d bc 24 68 13 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 9f 06 00 00 4d 8b b4 24 68 13 00 00 e8 47 59 0e RSP: 0018:ffffc90001ec77a8 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000003 RCX: ffffffff86531056 RDX: 000000000000026d RSI: ffffffff86530ce9 RDI: 0000000000001368 RBP: ffffc90001ec77e8 R08: ffff888093976080 R09: ffffed1015d0703d R10: ffffed1015d0703c R11: ffff8880ae8381e3 R12: 0000000000000000 R13: 000000000000002a R14: 0000000000000001 R15: 0000000000000003 FS: 000000000265f880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200008a0 CR3: 000000009f6d5000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400