Control: tags -1 + fixed-upstream patch
The bug was fixed upstream in the linked issue. Can we apply the attached
upstream patch?
Best,
Tobias
On Fri, 18 Sep 2020 18:09:01 +0200 Tobias Hansen <than...@debian.org> wrote:
> Package: libopenblas0
> Version: 0.3.10+ds-3
> Severity: normal
>
> Hi,
>
> a sagemath test segfaulted in libopenblas.so.0 / zgemm_oncopy_EMAG8180 when
> building on arm-ubc-01.debian.org,
> see
> https://buildd.debian.org/status/fetch.php?pkg=sagemath&arch=arm64&ver=9.2%7Ebeta12-1&stamp=1599922222&raw=0
>
> openblas was called by numpy and the issue looks similar to #966175 where the
> segfault occurred in dgemm_oncopy_HASWELL.
>
> Extract from the stack backtrace:
>
> #5 0x0000ffffab2fe3b0 in zgemm_oncopy_EMAG8180 () from
> /usr/lib/aarch64-linux-gnu/libopenblas.so.0
> #6 0x0000ffffaaac8430 in zgetrf_single () from
> /usr/lib/aarch64-linux-gnu/libopenblas.so.0
> #7 0x0000ffffaa064f3c in zgesv_ () from
> /usr/lib/aarch64-linux-gnu/liblapack.so.3
> #8 0x0000ffffaa00f330 in ?? () from
> /usr/lib/python3/dist-packages/numpy/linalg/_umath_linalg.cpython-38-aarch64-linux-gnu.so
>
> Best,
> Tobias
>
>
>
>From 7f26be4802042d7c54bd1645c54adc3e2ff72d50 Mon Sep 17 00:00:00 2001
From: Martin Kroeker <mar...@ruby.chemie.uni-freiburg.de>
Date: Sun, 1 Nov 2020 00:00:43 +0100
Subject: [PATCH] Reunify BUFFERSIZE across arm64 platforms to avoid segfaults
in DYNAMIC_ARCH
---
common_arm64.h | 6 ------
1 file changed, 6 deletions(-)
diff --git a/common_arm64.h b/common_arm64.h
index 314946282..9cdded305 100644
--- a/common_arm64.h
+++ b/common_arm64.h
@@ -142,14 +142,8 @@ static inline int blas_quickdivide(blasint x, blasint y){
#define HUGE_PAGESIZE ( 4 << 20)
#ifndef BUFFERSIZE
-#if defined(CORTEXA57)
-#define BUFFER_SIZE (20 << 20)
-#elif defined(TSV110) || defined(EMAG8180)
#define BUFFER_SIZE (32 << 20)
#else
-#define BUFFER_SIZE (16 << 20)
-#endif
-#else
#define BUFFER_SIZE (32 << BUFFERSIZE)
#endif
