linux-kernel - Re: [PATCH] kasan: don't call find_vm_area() in in

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <aGbG8BIafyR8C0ch@e129823.arm.com>
Date: Thu, 3 Jul 2025 19:07:44 +0100
From: Yeoreum Yun <yeoreum.yun@....com>
To: Andrey Ryabinin <ryabinin.a.a@...il.com>
Cc: glider@...gle.com, andreyknvl@...il.com, dvyukov@...gle.com,
	vincenzo.frascino@....com, akpm@...ux-foundation.org,
	bigeasy@...utronix.de, clrkwllms@...nel.org, rostedt@...dmis.org,
	byungchul@...com, max.byungchul.park@...il.com,
	kasan-dev@...glegroups.com, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, linux-rt-devel@...ts.linux.dev,
	Yunseong Kim <ysk@...lloc.com>
Subject: Re: [PATCH] kasan: don't call find_vm_area() in in_interrupt() for
 possible deadlock

Hi Andrey,

> [...]
> > Right. unless there is API -- find_vm_area() with spin_trylock(),
> > kasan_find_vm_area() should be removed.
> >
> > But, I'm not sure adding the new API used only bv kasan is better then
> > just remove kasan_find_vm_area().
> >
> > Do you have any idea for this?
> >
>
> I'd say the info from vm_struct is nice to have, but it's not essential for debugging.
> It's probably not worth trying to keep it, so I'd vote for for removing kasan_find_vm_area().

Thanks for sharing. I'll respin with it.

--
Sincerely,
Yeoreum Yun