skbuff: skb_under_panic: text:ffffffff8449d883 len:65564 put:14 head:ffff888129380000 data:ffff88812937fff4 tail:0x10010 end:0x1fec0 dev: ------------[ cut here ]------------ kernel BUG at net/core/skbuff.c:112! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 31126 Comm: syz-executor121 Not tainted 5.15.173-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 RIP: 0010:skb_panic net/core/skbuff.c:112 [inline] RIP: 0010:skb_under_panic+0x14c/0x150 net/core/skbuff.c:122 Code: a0 00 90 85 48 c7 c6 98 14 d9 85 48 8b 55 c0 8b 4d d4 44 8b 45 d0 4c 8b 4d c8 53 41 55 41 54 41 57 e8 e8 82 f7 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:ffffc9000033f690 EFLAGS: 00010286 RAX: 000000000000008f RBX: ffffffff85900120 RCX: 6f0f584880caa400 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc9000033f6d0 R08: ffffffff81564235 R09: ffffed103ee265a8 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000010010 R13: 000000000001fec0 R14: dffffc0000000000 R15: ffff88812937fff4 FS: 00007f07c65fc6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f07c65fcd58 CR3: 000000010bf5e000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: skb_push+0xf3/0x120 net/core/skbuff.c:2053 vlan_get_protocol_dgram+0x123/0x220 net/packet/af_packet.c:552 packet_recvmsg+0x5df/0x1d20 net/packet/af_packet.c:3517 ____sys_recvmsg+0x286/0x530 ___sys_recvmsg+0x1ec/0x690 net/socket.c:2697 do_recvmmsg+0x36b/0x8b0 net/socket.c:2791 __sys_recvmmsg net/socket.c:2870 [inline] __do_sys_recvmmsg net/socket.c:2893 [inline] __se_sys_recvmmsg net/socket.c:2886 [inline] __x64_sys_recvmmsg+0x195/0x240 net/socket.c:2886 x64_sys_call+0x7e5/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:300 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f07c6661509 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 91 1a 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:00007f07c65fc168 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00007f07c66eb438 RCX: 00007f07c6661509 RDX: 0000000000000001 RSI: 0000000020000480 RDI: 0000000000000003 RBP: 00007f07c66eb430 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000010022 R11: 0000000000000246 R12: 00007f07c66eb43c R13: 0000000000000010 R14: 00007ffc5955d070 R15: 00007ffc5955d158 Modules linked in: ---[ end trace d7777f63476a61fd ]--- RIP: 0010:skb_panic net/core/skbuff.c:112 [inline] RIP: 0010:skb_under_panic+0x14c/0x150 net/core/skbuff.c:122 Code: a0 00 90 85 48 c7 c6 98 14 d9 85 48 8b 55 c0 8b 4d d4 44 8b 45 d0 4c 8b 4d c8 53 41 55 41 54 41 57 e8 e8 82 f7 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:ffffc9000033f690 EFLAGS: 00010286 RAX: 000000000000008f RBX: ffffffff85900120 RCX: 6f0f584880caa400 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc9000033f6d0 R08: ffffffff81564235 R09: ffffed103ee265a8 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000010010 R13: 000000000001fec0 R14: dffffc0000000000 R15: ffff88812937fff4 FS: 00007f07c65fc6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f07c65fcd58 CR3: 000000010bf5e000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400