general protection fault in packet_lookup

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-4.19	general protection fault in packet_lookup_frame	C		done	1	1926d	1926d	1/1	fixed on 2019/12/04 13:46
upstream	general protection fault in packet_lookup_frame net	C	done		7	1926d	1926d	12/28	fixed on 2019/09/06 20:45

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 Modules linked in: CPU: 1 PID: 7387 Comm: syz-executor026 Not tainted 4.14.138 #34 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff88809620a340 task.stack: ffff888092eb0000 RIP: 0010:packet_lookup_frame+0x8d/0x240 net/packet/af_packet.c:515 RSP: 0018:ffff888092eb77d0 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff88809617dad0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 1ffff11012c2fb5a RDI: ffff88809617dadc RBP: ffff888092eb7800 R08: ffff88809620a340 R09: 0000000000000001 R10: 0000000000000000 R11: ffff88809620a340 R12: 0000000000000000 R13: 0000000000000001 R14: ffff88809617d580 R15: 0000000000000000 FS: 00007f28d9877700(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f28d9897e78 CR3: 00000000a95ab000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: packet_current_frame net/packet/af_packet.c:528 [inline] tpacket_snd net/packet/af_packet.c:2703 [inline] packet_sendmsg+0x520/0x5a10 net/packet/af_packet.c:3009 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xce/0x110 net/socket.c:656 ___sys_sendmsg+0x349/0x840 net/socket.c:2062 __sys_sendmmsg+0x152/0x3a0 net/socket.c:2152 SYSC_sendmmsg net/socket.c:2183 [inline] SyS_sendmmsg+0x35/0x60 net/socket.c:2178 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x4479b9 RSP: 002b:00007f28d9876da8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00000000006dcc38 RCX: 00000000004479b9 RDX: 0400000000000328 RSI: 0000000020008a80 RDI: 0000000000000003 RBP: 00000000006dcc30 R08: 00007f28d9877700 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dcc3c R13: 0000315f6576616c R14: 735f656764697262 R15: 00000000006dcc3c Code: 48 c1 ee 03 f7 73 0c 80 3c 0e 00 0f 85 9e 01 00 00 48 8b 0b 89 c0 4c 8d 24 c1 48 b8 00 00 00 00 00 fc ff df 4c 89 e1 48 c1 e9 03 <80> 3c 01 00 0f 85 93 01 00 00 48 8d 7b 10 4d 8b 3c 24 48 b9 00 RIP: packet_lookup_frame+0x8d/0x240 net/packet/af_packet.c:515 RSP: ffff888092eb77d0 ---[ end trace b36cf0de1cad273b ]---