From: Mateusz Guzik <mjguzik@gmail.com>
To: Dmitry Antipov <dmantipov@yandex.ru>
Cc: Tycho Andersen <tandersen@netflix.com>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Christian Brauner <brauner@kernel.org>, Jan Kara <jack@suse.cz>,
linux-fsdevel@vger.kernel.org, linux-mm@kvack.org,
lvc-project@linuxtesting.org,
syzbot+03e1af5c332f7e0eb84b@syzkaller.appspotmail.com,
vbabka@suse.cz
Subject: Re: [PATCH] exec: do not pass invalid pointer to kfree() from free_bprm()
Date: Tue, 5 Nov 2024 12:30:09 +0100 [thread overview]
Message-ID: <m4ws43n63iaxuyx7qm667ppsloc63aex34erarrflp6huzlaru@xrpnve3kjluy> (raw)
In-Reply-To: <20241105111344.2532040-1-dmantipov@yandex.ru>
On Tue, Nov 05, 2024 at 02:13:44PM +0300, Dmitry Antipov wrote:
> Syzbot has reported the following BUG:
>
> kernel BUG at arch/x86/mm/physaddr.c:23!
[..]
> Since 'bprm_add_fixup_comm()' may set 'bprm->argv0' to 'ERR_PTR()',
> errno-lookalike invalid pointer should not be passed to 'kfree()'.
>
The specific instance aside, perhaps kfree could get patched up to
complain about it (when debug is enabled)?
next prev parent reply other threads:[~2024-11-05 11:30 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-11-05 11:13 Dmitry Antipov
2024-11-05 11:30 ` Mateusz Guzik [this message]
2024-11-05 13:08 ` Dmitry Antipov
2024-11-05 13:35 ` Kirill A. Shutemov
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