Re: mmstress[1309]: segfault at 7f3d71a36ee8 ip 00007f3d77132bdf sp 00007f3d71a36ee8 error 4 in libc-2.27.so[7f3d77058000+1aa000]

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Subject: Re: mmstress[1309]: segfault at 7f3d71a36ee8 ip 00007f3d77132bdf sp 00007f3d71a36ee8 error 4 in libc-2.27.so[7f3d77058000+1aa000]
From: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Date: Wed, 21 Oct 2020 10:05:06 -0700
Cc: open list <linux-kernel@xxxxxxxxxxxxxxx>, linux-m68k <linux-m68k@xxxxxxxxxxxxxxx>, X86 ML <x86@xxxxxxxxxx>, LTP List <ltp@xxxxxxxxxxxxxx>, lkft-triage@xxxxxxxxxxxxxxxx, Linux-Next Mailing List <linux-next@xxxxxxxxxxxxxxx>, linux-mm <linux-mm@xxxxxxxxx>, kasan-dev <kasan-dev@xxxxxxxxxxxxxxxx>, Christian Brauner <christian.brauner@xxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>, "Peter Zijlstra (Intel)" <peterz@xxxxxxxxxxxxx>, Al Viro <viro@xxxxxxxxxxxxxxxxxx>, Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>, Viresh Kumar <viresh.kumar@xxxxxxxxxx>, zenglg.jy@xxxxxxxxxxxxxx, Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>, "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>, Dmitry Vyukov <dvyukov@xxxxxxxxxx>
In-reply-to: <CA+G9fYvHze+hKROmiB0uL90S8h9ppO9S9Xe7RWwv808QwOd_Yw@mail.gmail.com>
References: <CA+G9fYvHze+hKROmiB0uL90S8h9ppO9S9Xe7RWwv808QwOd_Yw@mail.gmail.com>

On Wed, Oct 21, 2020 at 9:58 AM Naresh Kamboju
<naresh.kamboju@xxxxxxxxxx> wrote:


LTP mm mtest05 (mmstress), mtest06_3 and mallocstress01 (mallocstress) tested on
x86 KASAN enabled build. But tests are getting PASS on Non KASAN builds.
This regression started happening from next-20201015 nowards


Is it repeatable enough to be bisectable?

             Linus

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- Re: mmstress[1309]: segfault at 7f3d71a36ee8 ip 00007f3d77132bdf sp 00007f3d71a36ee8 error 4 in libc-2.27.so[7f3d77058000+1aa000]
  - From: Naresh Kamboju

References:
- mmstress[1309]: segfault at 7f3d71a36ee8 ip 00007f3d77132bdf sp 00007f3d71a36ee8 error 4 in libc-2.27.so[7f3d77058000+1aa000]
  - From: Naresh Kamboju

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