From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-it0-f69.google.com (mail-it0-f69.google.com [209.85.214.69]) by kanga.kvack.org (Postfix) with ESMTP id D92D86B0003 for ; Fri, 20 Jul 2018 17:34:42 -0400 (EDT) Received: by mail-it0-f69.google.com with SMTP id h26-v6so10272265itf.4 for ; Fri, 20 Jul 2018 14:34:42 -0700 (PDT) Received: from sonic311-22.consmr.mail.ne1.yahoo.com (sonic311-22.consmr.mail.ne1.yahoo.com. [66.163.188.203]) by mx.google.com with ESMTPS id y77-v6si2292708iof.72.2018.07.20.14.34.41 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 20 Jul 2018 14:34:41 -0700 (PDT) Date: Fri, 20 Jul 2018 21:34:38 +0000 (UTC) From: David Frank Message-ID: <289656.55439.1532122478212@mail.yahoo.com> In-Reply-To: <1835984892.475561.1532108339625@mail.yahoo.com> References: <1835984892.475561.1532108339625.ref@mail.yahoo.com> <1835984892.475561.1532108339625@mail.yahoo.com> Subject: memcpy seg fault with mmaped address MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_55438_428776891.1532122478211" Sender: owner-linux-mm@kvack.org List-ID: To: Linux-mm ------=_Part_55438_428776891.1532122478211 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable =20 Hi,=20 I'm memcpy data into mmaped address with 2GB file, after a few files, it wo= uld fault with the following stack dump: received signal SIGSEGV, Segmentation fault.[Switching to Thread 0x7ffff5e9= 5700 (LWP 3028)] __memmove_avx_unaligned_erms () =C2=A0=C2=A0=C2=A0 at ../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erm= s.S:494 494=C2=A0=C2=A0=C2=A0 ../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erm= s.S: No such file or directory. (gdb) bt #0=C2=A0 __memmove_avx_unaligned_erms () =C2=A0=C2=A0=C2=A0 at ../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erm= s.S:494 Any idea? Thanks, David =20 ------=_Part_55438_428776891.1532122478211 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 7bit

Hi,

I'm memcpy data into mmaped address with 2GB file, after a few files, it would fault with the following stack dump:

received signal SIGSEGV, Segmentation fault.

[Switching to Thread 0x7ffff5e95700 (LWP 3028)]
__memmove_avx_unaligned_erms ()
at ../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S:494
494 ../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S: No such
file or directory.
(gdb) bt
#0 __memmove_avx_unaligned_erms ()

at ../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S:494

Any idea?

Thanks,

David

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