linux-kernel - Re: [syzbot] [net?] KASAN: use-after-free Read in __skb_flow

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Message-ID: <000000000000a0fcd7060f24505c@google.com>
Date: Wed, 17 Jan 2024 05:35:06 -0800
From: syzbot <syzbot+bfde3bef047a81b8fde6@...kaller.appspotmail.com>
To: hdanton@...a.com, linux-kernel@...r.kernel.org, 
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [net?] KASAN: use-after-free Read in __skb_flow_dissect (3)

Hello,

syzbot tried to test the proposed patch but the build/boot failed:

net/core/flow_dissector.c:1169:29: error: assignment to 'const struct iphdr *' from incompatible pointer type 'unsigned char *' [-Werror=incompatible-pointer-types]

Tested on:

commit:         052d5343 Merge tag 'exfat-for-6.8-rc1' of git://git.ke..
git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
kernel config:  https://syzkaller.appspot.com/x/.config?x=da1c95d4e55dda83
dashboard link: https://syzkaller.appspot.com/bug?extid=bfde3bef047a81b8fde6
compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
patch:          https://syzkaller.appspot.com/x/patch.diff?x=15ed3ab9e80000