general protection fault in packet_lookup

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-4.14	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 CPU: 1 PID: 9270 Comm: syz-executor762 Not tainted 4.19.66 #40 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:packet_lookup_frame+0x8d/0x270 net/packet/af_packet.c:482 Code: c1 ee 03 f7 73 0c 80 3c 0e 00 0f 85 cb 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 94 01 00 00 48 8d 7b 10 4d 8b 3c 24 48 b8 00 00 RSP: 0018:ffff8880960ff7c8 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff888092b80ad0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 1ffff1101257015a RDI: ffff888092b80adc RBP: ffff8880960ff7f8 R08: ffff88808036a640 R09: 0000000000000001 R10: ffffed1015d24732 R11: ffff8880ae923993 R12: 0000000000000000 R13: 0000000000000001 R14: ffff888092b80580 R15: dffffc0000000000 FS: 00007f4ce8045700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000040 CR3: 00000000920d9000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: packet_current_frame net/packet/af_packet.c:495 [inline] tpacket_snd net/packet/af_packet.c:2665 [inline] packet_sendmsg+0x58d/0x64f0 net/packet/af_packet.c:2973 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:632 ___sys_sendmsg+0x3e2/0x920 net/socket.c:2115 __sys_sendmmsg+0x1bf/0x4e0 net/socket.c:2210 __do_sys_sendmmsg net/socket.c:2239 [inline] __se_sys_sendmmsg net/socket.c:2236 [inline] __x64_sys_sendmmsg+0x9d/0x100 net/socket.c:2236 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4489e9 Code: e8 6c 10 03 00 48 83 c4 18 c3 0f 1f 80 00 00 00 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 ab 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f4ce8044ce8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00000000006e49f8 RCX: 00000000004489e9 RDX: 0400000000000328 RSI: 0000000020008a80 RDI: 0000000000000003 RBP: 00000000006e49f0 R08: 00007f4ce8045700 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006e49fc R13: 00007fffef4a20af R14: 00007f4ce80459c0 R15: 0000000000000005 Modules linked in: ---[ end trace 821cbe90373f254e ]--- RIP: 0010:packet_lookup_frame+0x8d/0x270 net/packet/af_packet.c:482 Code: c1 ee 03 f7 73 0c 80 3c 0e 00 0f 85 cb 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 94 01 00 00 48 8d 7b 10 4d 8b 3c 24 48 b8 00 00 RSP: 0018:ffff8880960ff7c8 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff888092b80ad0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 1ffff1101257015a RDI: ffff888092b80adc RBP: ffff8880960ff7f8 R08: ffff88808036a640 R09: 0000000000000001 R10: ffffed1015d24732 R11: ffff8880ae923993 R12: 0000000000000000 R13: 0000000000000001 R14: ffff888092b80580 R15: dffffc0000000000 FS: 00007f4ce8045700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000040 CR3: 00000000920d9000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400