[Android 5.10] kernel BUG in vlan_get_protocol_dgram

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 8d23314f588a Merge 5.10.225 into android13-5.10-lts
git tree: android13-5.10-lts
console output: https://syzkaller.appspot.com/x/log.txt?x=14d4a4a9980000
kernel config: https://syzkaller.appspot.com/x/.config?x=889d6bbfedaebd06
dashboard link: https://syzkaller.appspot.com/bug?extid=f463da0823e4a4db9763
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12d4a4a9980000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=174aa69f980000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/09c1893905da/disk-8d23314f.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/5294d841c477/vmlinux-8d23314f.xz
kernel image: https://storage.googleapis.com/syzbot-assets/a9c3f12eb021/bzImage-8d23314f.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+f463da...@syzkaller.appspotmail.com

skbuff: skb_under_panic: text:ffffffff843e0a63 len:29 put:14 head:ffff888120152c00 data:ffff888120152bf4 tail:0x11 end:0x80 dev:<NULL>
------------[ cut here ]------------
kernel BUG at net/core/skbuff.c:111!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 347 Comm: syz-executor326 Not tainted 5.10.225-syzkaller-00513-g8d23314f588a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:skb_panic net/core/skbuff.c:111 [inline]
RIP: 0010:skb_under_panic+0x14c/0x150 net/core/skbuff.c:121
Code: c0 e8 8d 85 48 c7 c6 5d d8 d8 85 48 8b 55 c0 8b 4d d4 44 8b 45 d0 4c 8b 4d c8 53 41 55 41 54 41 57 e8 2e 29 ed 00 48 83 c4 20 <0f> 0b 66 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 41 89 f6 49 89
RSP: 0018:ffffc90000c376b0 EFLAGS: 00010282
RAX: 0000000000000086 RBX: ffffffff858de940 RCX: 4d4a0bba1b312700
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc90000c376f0 R08: ffffffff81522098 R09: ffffed103ee0a5f8
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000011
R13: 0000000000000080 R14: dffffc0000000000 R15: ffff888120152bf4
FS: 00007fb884a7d6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb884a5cd58 CR3: 000000011fc6c000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
skb_push+0xf3/0x120 net/core/skbuff.c:1946
vlan_get_protocol_dgram+0x123/0x220 net/packet/af_packet.c:550
packet_recvmsg+0x5df/0x1cd0 net/packet/af_packet.c:3521
____sys_recvmsg+0x286/0x530
___sys_recvmsg+0x1ec/0x690 net/socket.c:2637
do_recvmmsg+0x407/0x920 net/socket.c:2731
__sys_recvmmsg net/socket.c:2810 [inline]
__do_sys_recvmmsg net/socket.c:2833 [inline]
__se_sys_recvmmsg net/socket.c:2826 [inline]
__x64_sys_recvmmsg+0x195/0x240 net/socket.c:2826
do_syscall_64+0x34/0x70
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fb884ac02a9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 18 00 00 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 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb884a7d228 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007fb884b47408 RCX: 00007fb884ac02a9
RDX: 0000000000000001 RSI: 0000000020000480 RDI: 0000000000000004
RBP: 00007fb884b47400 R08: 0000000000000000 R09: 00007fb884a7d6c0
R10: 0000000000010022 R11: 0000000000000246 R12: 00007fb884b140d8
R13: 83a88896d4b9b107 R14: 07c6c9333d389ca9 R15: 00007ffde007ad78
Modules linked in:
---[ end trace 07a7f28717492588 ]---
RIP: 0010:skb_panic net/core/skbuff.c:111 [inline]
RIP: 0010:skb_under_panic+0x14c/0x150 net/core/skbuff.c:121
Code: c0 e8 8d 85 48 c7 c6 5d d8 d8 85 48 8b 55 c0 8b 4d d4 44 8b 45 d0 4c 8b 4d c8 53 41 55 41 54 41 57 e8 2e 29 ed 00 48 83 c4 20 <0f> 0b 66 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 41 89 f6 49 89
RSP: 0018:ffffc90000c376b0 EFLAGS: 00010282
RAX: 0000000000000086 RBX: ffffffff858de940 RCX: 4d4a0bba1b312700
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc90000c376f0 R08: ffffffff81522098 R09: ffffed103ee0a5f8
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000011
R13: 0000000000000080 R14: dffffc0000000000 R15: ffff888120152bf4
FS: 00007fb884a7d6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb884a5cd58 CR3: 000000011fc6c000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400


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[syzbot]

syzbot suspects this issue was fixed by commit:

commit 0d3fa6c3c9ca7aa255696150f5b759ac4a4974e1
Author: Eric Dumazet <edum...@google.com>
Date: Mon Dec 30 16:10:04 2024 +0000

af_packet: fix vlan_get_protocol_dgram() vs MSG_PEEK

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=13f10aa4580000
start commit: e5e5644ea27f Revert "udf: Avoid excessive partition lengths"
git tree: android13-5.10-lts
kernel config: https://syzkaller.appspot.com/x/.config?x=d3a5f406b765d0a
dashboard link: https://syzkaller.appspot.com/bug?extid=f463da0823e4a4db9763
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13bfcf27980000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1583745f980000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: af_packet: fix vlan_get_protocol_dgram() vs MSG_PEEK

For information about bisection process see: https://goo.gl/tpsmEJ#bisection

[syzbot]

Auto-closing this bug as obsolete.
No recent activity, existing reproducers are no longer triggering the issue.