From: Feng Tang <feng.tang@intel.com>
To: syzbot <syzbot+80b36e60457a005e0530@syzkaller.appspotmail.com>,
<vbabka@suse.cz>
Cc: <42.hyeyoo@gmail.com>, <akpm@linux-foundation.org>,
<andrii@kernel.org>, <ast@kernel.org>, <bpf@vger.kernel.org>,
<cl@linux.com>, <daniel@iogearbox.net>, <davem@davemloft.net>,
<eddyz87@gmail.com>, <edumazet@google.com>, <haoluo@google.com>,
<iamjoonsoo.kim@lge.com>, <john.fastabend@gmail.com>,
<jolsa@kernel.org>, <kpsingh@kernel.org>, <kuba@kernel.org>,
<linux-kernel@vger.kernel.org>, <linux-mm@kvack.org>,
<martin.lau@linux.dev>, <netdev@vger.kernel.org>,
<pabeni@redhat.com>, <penberg@kernel.org>, <rientjes@google.com>,
<roman.gushchin@linux.dev>, <sdf@fomichev.me>, <song@kernel.org>,
<syzkaller-bugs@googlegroups.com>, <vbabka@suse.cz>,
<yonghong.song@linux.dev>
Subject: Re: [syzbot] [bpf?] [net?] KFENCE: memory corruption in pskb_expand_head
Date: Sat, 5 Oct 2024 16:20:59 +0800 [thread overview]
Message-ID: <ZwD268XX+eEoeNGo@feng-clx.sh.intel.com> (raw)
In-Reply-To: <6700f123.050a0220.49194.04b5.GAE@google.com>
On Sat, Oct 05, 2024 at 12:56:19AM -0700, syzbot wrote:
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit: c02d24a5af66 Add linux-next specific files for 20241003
> git tree: linux-next
> console+strace: https://syzkaller.appspot.com/x/log.txt?x=1404ab9f980000
> kernel config: https://syzkaller.appspot.com/x/.config?x=94f9caf16c0af42d
> dashboard link: https://syzkaller.appspot.com/bug?extid=80b36e60457a005e0530
> compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10f633d0580000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1204ab9f980000
>
> Downloadable assets:
> disk image: https://storage.googleapis.com/syzbot-assets/641e642c9432/disk-c02d24a5.raw.xz
> vmlinux: https://storage.googleapis.com/syzbot-assets/98aaf20c29e0/vmlinux-c02d24a5.xz
> kernel image: https://storage.googleapis.com/syzbot-assets/c23099f2d86b/bzImage-c02d24a5.xz
>
> The issue was bisected to:
>
> commit d0a38fad51cc70ab3dd3c59b54d8079ac19220b9
> Author: Feng Tang <feng.tang@intel.com>
> Date: Wed Sep 11 06:45:34 2024 +0000
>
> mm/slub: Improve redzone check and zeroing for krealloc()
Thanks for the report!
Marco Elver also reported similar issue [1]. We agreed to revert the patch
and work on a new version, and Vlastimil did zapped the patchset from his
'for-next' branch. I just rechecked and seems the pachset also sits on
another branch 'for-6.13/fixes' of slab tree.
Vlastimil, pls help to zap it from that branch also, thanks!
[1]. https://lore.kernel.org/all/CANpmjNM5XjwwSc8WrDE9=FGmSScftYrbsvC+db+82GaMPiQqvQ@mail.gmail.com/
- Feng
prev parent reply other threads:[~2024-10-05 8:21 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-05 7:56 syzbot
2024-10-05 8:20 ` Feng Tang [this message]
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