linux-kernel - Re: [syzbot] [net?] KASAN: slab-use-after-free Write in l2tp_session

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Message-ID: <000000000000455cc6061bde8e52@google.com>
Date: Thu, 27 Jun 2024 05:49:03 -0700
From: syzbot <syzbot+c041b4ce3a6dfd1e63e2@...kaller.appspotmail.com>
To: eadavis@...com, linux-kernel@...r.kernel.org, 
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [net?] KASAN: slab-use-after-free Write in l2tp_session_delete

Hello,

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

kernel clean failed: failed to run ["make" "-j" "64" "ARCH=x86_64" "distclean"]: exit status 2
Makefile:83: *** Cannot find a vmlinux for VMLINUX_BTF at any of "  ../../vmlinux /sys/kernel/btf/vmlinux /boot/vmlinux-5.9.0-0.bpo.5-cloud-amd64".  Stop.
make[2]: *** [Makefile:192: sched_ext_clean] Error 2
make[1]: *** [/syzkaller/jobs-2/linux/kernel/Makefile:1361: sched_ext] Error 2
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:240: __sub-make] Error 2



Tested on:

commit:         f76698bd Add linux-next specific files for 20240621
git tree:       git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
kernel config:  https://syzkaller.appspot.com/x/.config?x=e78fc116033e0ab7
dashboard link: https://syzkaller.appspot.com/bug?extid=c041b4ce3a6dfd1e63e2
compiler:       
patch:          https://syzkaller.appspot.com/x/patch.diff?x=175c26c1980000