From: Paul Chaignon <paul.chaignon@gmail.com>
To: syzbot <syzbot+27689b73d9cffb8c6bca@syzkaller.appspotmail.com>
Cc: andrii@kernel.org, ast@kernel.org, bpf@vger.kernel.org,
daniel@iogearbox.net, eddyz87@gmail.com, haoluo@google.com,
john.fastabend@gmail.com, jolsa@kernel.org, kpsingh@kernel.org,
linux-kernel@vger.kernel.org, martin.lau@linux.dev,
sdf@fomichev.me, song@kernel.org,
syzkaller-bugs@googlegroups.com, yonghong.song@linux.dev
Subject: Re: [syzbot] [bpf?] WARNING in bpf_check (5)
Date: Fri, 5 Sep 2025 11:40:05 +0200 [thread overview]
Message-ID: <aLqv9eV-wDfZj-gI@mail.gmail.com> (raw)
In-Reply-To: <68ba3053.a00a0220.eb3d.000d.GAE@google.com>
On Thu, Sep 04, 2025 at 05:35:31PM -0700, syzbot wrote:
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit: 8f5ae30d69d7 Linux 6.17-rc1
> git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci
> console output: https://syzkaller.appspot.com/x/log.txt?x=10dc087c580000
> kernel config: https://syzkaller.appspot.com/x/.config?x=8c5ac3d8b8abfcb
> dashboard link: https://syzkaller.appspot.com/bug?extid=27689b73d9cffb8c6bca
> compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
> userspace arch: arm64
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16342134580000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10e75a42580000
>
> Downloadable assets:
> disk image: https://storage.googleapis.com/syzbot-assets/18a2e4bd0c4a/disk-8f5ae30d.raw.xz
> vmlinux: https://storage.googleapis.com/syzbot-assets/3b5395881b25/vmlinux-8f5ae30d.xz
> kernel image: https://storage.googleapis.com/syzbot-assets/e875f4e3b7ff/Image-8f5ae30d.gz.xz
>
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+27689b73d9cffb8c6bca@syzkaller.appspotmail.com
>
> ------------[ cut here ]------------
> verifier bug: not inlined functions bpf_perf_event_read#22 is missing func(1)
> WARNING: CPU: 1 PID: 6725 at kernel/bpf/verifier.c:22840 do_misc_fixups kernel/bpf/verifier.c:22838 [inline]
> WARNING: CPU: 1 PID: 6725 at kernel/bpf/verifier.c:22840 bpf_check+0x1559c/0x15d8c kernel/bpf/verifier.c:24742
This one was already reported as
https://syzkaller.appspot.com/bug?extid=a9ed3d9132939852d0df and fixed
in e4414b01c1cd ("bpf: Check the helper function is valid in
get_helper_proto") (in bpf tree).
#syz dup: [syzbot] [bpf?] WARNING in do_misc_fixups
[...]
prev parent reply other threads:[~2025-09-05 9:40 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-05 0:35 [syzbot] [bpf?] WARNING in bpf_check (5) syzbot
2025-09-05 9:40 ` Paul Chaignon [this message]
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