skbuff: skb_under_panic: text:ffffffff84d53d33 len:65564 put:14 head:ffff88811a4a0000 data:ffff88811a49fff4 tail:0x10010 end:0x1fec0 dev: ------------[ cut here ]------------ kernel BUG at net/core/skbuff.c:206! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 0 UID: 0 PID: 1396 Comm: syz.2.323 Not tainted 6.13.0-rc3-syzkaller-g78d4f34e2115 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 RIP: 0010:skb_panic net/core/skbuff.c:206 [inline] RIP: 0010:skb_under_panic+0x153/0x160 net/core/skbuff.c:216 Code: e0 91 3d 86 48 c7 c6 cf de aa 86 48 8b 55 c0 8b 4d d4 44 8b 45 d0 4c 8b 4d c8 50 41 55 41 54 41 57 e8 71 99 c5 fc 48 83 c4 20 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc900027ff630 EFLAGS: 00010286 RAX: 000000000000008f RBX: ffff888119a5d010 RCX: 117584c4c95eb700 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc900027ff670 R08: ffffffff8163cf55 R09: 1ffff920004ffe54 R10: fffff520004ffe55 R11: fffff520004ffe55 R12: 0000000000010010 R13: 000000000001fec0 R14: dffffc0000000000 R15: ffff88811a49fff4 FS: 00007f332a2696c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f332a248d58 CR3: 0000000116c0a000 CR4: 00000000003526b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: skb_push+0xff/0x130 net/core/skbuff.c:2636 vlan_get_protocol_dgram+0x123/0x230 net/packet/af_packet.c:585 packet_recvmsg+0x948/0x1e60 net/packet/af_packet.c:3552 sock_recvmsg_nosec net/socket.c:1033 [inline] sock_recvmsg+0x20e/0x260 net/socket.c:1055 ____sys_recvmsg+0x1c6/0x480 net/socket.c:2803 ___sys_recvmsg net/socket.c:2845 [inline] do_recvmmsg+0x426/0xa90 net/socket.c:2940 __sys_recvmmsg net/socket.c:3014 [inline] __do_sys_recvmmsg net/socket.c:3037 [inline] __se_sys_recvmmsg net/socket.c:3030 [inline] __x64_sys_recvmmsg+0x199/0x250 net/socket.c:3030 x64_sys_call+0x2a87/0x2e00 arch/x86/include/generated/asm/syscalls_64.h:300 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x54/0xf0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7f3329385d19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f332a269038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00007f3329575fa0 RCX: 00007f3329385d19 RDX: 0000000000000001 RSI: 0000000020000480 RDI: 0000000000000003 RBP: 00007f3329401a20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000010022 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f3329575fa0 R15: 00007fff9655cf48 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:skb_panic net/core/skbuff.c:206 [inline] RIP: 0010:skb_under_panic+0x153/0x160 net/core/skbuff.c:216 Code: e0 91 3d 86 48 c7 c6 cf de aa 86 48 8b 55 c0 8b 4d d4 44 8b 45 d0 4c 8b 4d c8 50 41 55 41 54 41 57 e8 71 99 c5 fc 48 83 c4 20 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc900027ff630 EFLAGS: 00010286 RAX: 000000000000008f RBX: ffff888119a5d010 RCX: 117584c4c95eb700 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc900027ff670 R08: ffffffff8163cf55 R09: 1ffff920004ffe54 R10: fffff520004ffe55 R11: fffff520004ffe55 R12: 0000000000010010 R13: 000000000001fec0 R14: dffffc0000000000 R15: ffff88811a49fff4 FS: 00007f332a2696c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c0054ba000 CR3: 0000000116c0a000 CR4: 00000000003526b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400