linux-kernel - Re: BUG: unable to handle kernel paging request in build_id_parse

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Message-ID: <8d4af742-bd8c-42b8-90b7-a18ddec1ecd3@iogearbox.net>
Date: Fri, 18 Oct 2024 13:39:09 +0200
From: Daniel Borkmann <daniel@...earbox.net>
To: Hui Guo <guohui.study@...il.com>,
 Andrew Morton <akpm@...ux-foundation.org>,
 Alexei Starovoitov <ast@...nel.org>, Andrii Nakryiko <andrii@...nel.org>,
 Martin KaFai Lau <martin.lau@...ux.dev>, Eduard Zingerman
 <eddyz87@...il.com>, Song Liu <song@...nel.org>,
 Yonghong Song <yonghong.song@...ux.dev>,
 John Fastabend <john.fastabend@...il.com>, KP Singh <kpsingh@...nel.org>,
 Stanislav Fomichev <sdf@...ichev.me>, Hao Luo <haoluo@...gle.com>,
 Jiri Olsa <jolsa@...nel.org>, linux-kernel@...r.kernel.org,
 bpf@...r.kernel.org
Cc: syzkaller-bugs@...glegroups.com
Subject: Re: BUG: unable to handle kernel paging request in
 build_id_parse_nofault

On 10/18/24 1:26 PM, Hui Guo wrote:
> Hi Kernel Maintainers,
> we found a crash "BUG: unable to handle kernel paging request in
> build_id_parse_nofault" (it seems like a KASAN and makes the kernel
> reboot) in upstream, we also have successfully reproduced it manually:
> 
> HEAD Commit: 9852d85ec9d492ebef56dc5f229416c925758edc(tag 'v6.12-rc1')
> kernel config: https://raw.githubusercontent.com/androidAppGuard/KernelBugs/main/6.12.config
> 
> console output:
> https://raw.githubusercontent.com/androidAppGuard/KernelBugs/main/9852d85ec9d492ebef56dc5f229416c925758edc/7a4626c1fd3c932f5ee145636d9b82d152708357/log0
> repro report: https://raw.githubusercontent.com/androidAppGuard/KernelBugs/main/9852d85ec9d492ebef56dc5f229416c925758edc/7a4626c1fd3c932f5ee145636d9b82d152708357/repro.report
> syz reproducer:
> https://raw.githubusercontent.com/androidAppGuard/KernelBugs/main/9852d85ec9d492ebef56dc5f229416c925758edc/7a4626c1fd3c932f5ee145636d9b82d152708357/repro.prog
> c reproducer: https://raw.githubusercontent.com/androidAppGuard/KernelBugs/main/9852d85ec9d492ebef56dc5f229416c925758edc/7a4626c1fd3c932f5ee145636d9b82d152708357/repro.cprog
> 
> 
> Please let me know if there is anything I can help with.

Should be fixed by :

https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git/commit/?id=5ac9b4e935dfc6af41eee2ddc21deb5c36507a9f

Please retry against git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git tree.

Thanks,
Daniel