From: Dave Hansen <dave.hansen@intel.com>
To: Tengda Wu <wutengda@huaweicloud.com>, x86@kernel.org
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>,
Thomas Gleixner <tglx@linutronix.de>,
Alexander Potapenko <glider@google.com>,
Andrey Konovalov <andreyknvl@gmail.com>,
Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
Dmitry Vyukov <dvyukov@google.com>,
Ingo Molnar <mingo@redhat.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH -next] x86: Prevent KASAN false positive warnings in __show_regs()
Date: Wed, 20 Aug 2025 14:36:02 -0700 [thread overview]
Message-ID: <1ede0349-320e-493e-a3fe-bc72efa4fd44@intel.com> (raw)
In-Reply-To: <20250818130715.2904264-1-wutengda@huaweicloud.com>
On 8/18/25 06:07, Tengda Wu wrote:
> When process A accesses process B's `regs` from stack memory through
> __show_regs(), the stack of process B keeps changing during runtime.
> This causes false positives like "stack out-of-bounds" [1] or
> "out-of-bounds" [2] warnings when reading `regs` contents.
Could you explain a little bit more how you know that these are false
positives?
next prev parent reply other threads:[~2025-08-20 21:36 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-18 13:07 Tengda Wu
2025-08-20 21:36 ` Dave Hansen [this message]
2025-08-21 3:13 ` Tengda Wu
2025-08-27 11:58 ` Tengda Wu
2025-08-27 14:36 ` Dave Hansen
2025-08-28 12:04 ` Tengda Wu
2025-08-27 14:45 ` Andrey Ryabinin
2025-08-28 12:06 ` Tengda Wu
2025-08-28 14:13 ` Dave Hansen
2025-08-29 2:50 ` Tengda Wu
2025-08-28 19:16 ` Josh Poimboeuf
2025-08-29 9:45 ` Tengda Wu
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1ede0349-320e-493e-a3fe-bc72efa4fd44@intel.com \
--to=dave.hansen@intel.com \
--cc=andreyknvl@gmail.com \
--cc=bp@alien8.de \
--cc=dave.hansen@linux.intel.com \
--cc=dvyukov@google.com \
--cc=glider@google.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=ryabinin.a.a@gmail.com \
--cc=tglx@linutronix.de \
--cc=wutengda@huaweicloud.com \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®