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GNU C Library master sources branch master updated. glibc-2.26.9000-999-gc85c564
- From: jsm28 at sourceware dot org
- To: glibc-cvs at sourceware dot org
- Date: 18 Dec 2017 18:27:19 -0000
- Subject: GNU C Library master sources branch master updated. glibc-2.26.9000-999-gc85c564
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http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=c85c564d1442f0bc09a6c80fca025f004e12d044
commit c85c564d1442f0bc09a6c80fca025f004e12d044
Author: Sergei Trofimovich <slyfox@gentoo.org>
Date: Mon Dec 18 18:26:49 2017 +0000
mips32: fix clobbering s0 in setjmp() [BZ #22624]
Similar to commit 1ab47db00dfbc0128119e3503d3ed640ffc4830b
("mips64: fix clobbering s0 in setjmp() [BZ #22624]")
as sysdeps/mips/setjmp_aux.c is almost an identical copy
of sysdeps/mips/mips64/setjmp_aux.c.
[BZ #22624]
* sysdeps/mips/setjmp_aux.c (__sigsetjmp_aux): Use
inhibit_stack_protector.
diff --git a/ChangeLog b/ChangeLog
index 4a71643..31b25ab 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,10 @@
2017-12-18 Sergei Trofimovich <slyfox@gentoo.org>
[BZ #22624]
+ * sysdeps/mips/setjmp_aux.c (__sigsetjmp_aux): Use
+ inhibit_stack_protector.
+
+ [BZ #22624]
* sysdeps/mips/mips64/setjmp_aux.c (__sigsetjmp_aux): Use
inhibit_stack_protector.
diff --git a/sysdeps/mips/setjmp_aux.c b/sysdeps/mips/setjmp_aux.c
index 0052e0c..176243b 100644
--- a/sysdeps/mips/setjmp_aux.c
+++ b/sysdeps/mips/setjmp_aux.c
@@ -23,7 +23,12 @@
pointer. We do things this way because it's difficult to reliably
access them in C. */
+/* Stack protection is disabled to avoid changing s0 (or any other
+ caller-save register) before storing it to environment.
+ See BZ #22624. */
+
int __attribute__ ((nomips16))
+inhibit_stack_protector
__sigsetjmp_aux (jmp_buf env, int savemask, int sp, int fp)
{
#ifdef __mips_hard_float
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 4 ++++
sysdeps/mips/setjmp_aux.c | 5 +++++
2 files changed, 9 insertions(+), 0 deletions(-)
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