Re: [PATCH v3] net: ipv6: fix skb_over_panic in __ip6_append_data

Hello:

This patch was applied to netdev/net.git (master) by Jakub Kicinski kuba@kernel.org:

On Thu, 10 Mar 2022 15:25:38 -0800 you wrote:

Syzbot found a kernel bug in the ipv6 stack: LINK: https://syzkaller.appspot.com/bug?id=205d6f11d72329ab8d62a610c44c5e7e2541558... The reproducer triggers it by sending a crafted message via sendmmsg() call, which triggers skb_over_panic, and crashes the kernel:

skbuff: skb_over_panic: text:ffffffff84647fb4 len:65575 put:65575 head:ffff888109ff0000 data:ffff888109ff0088 tail:0x100af end:0xfec0 dev:<NULL>

[...]

Here is the summary with links: - [v3] net: ipv6: fix skb_over_panic in __ip6_append_data https://git.kernel.org/netdev/net/c/5e34af4142ff

You are awesome, thank you!