Bug#1063937: glibc: Please add workaround to fix posix_spawn() on sparc64
Source: glibc
Version: 2.37-15
Severity: important
Tags: patch
User: debian-sparc@lists.debian.org
Usertags: sparc64
X-Debbugs-Cc: debian-sparc@lists.debian.org,kernel@mkarcher.dialup.fu-berlin.de,sam@gentoo.org
Hello,
there is currently a nasty bug on sparc64 that breaks posix_spawn() [1]
and potentially any package that uses gcc since libiberty switched to
using posix_spawn() with gcc-14.
The attached patch comes from Michael Karcher (CC'ed) and unbreaks
posix_spawn() so that gcc works again without posix_spawn() failing
with "Bad Address".
Since this patch is just a workaround and we're not even sure whether
the bug is in the kernel or glibc, it's not been pushed upstream yet.
Adrian
> [1] https://lore.kernel.org/sparclinux/fe5cc47167430007560501aabb28ba154985b661.camel@physik.fu-berlin.de
--
.''`. John Paul Adrian Glaubitz
: :' : Debian Developer
`. `' Physicist
`- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913
--- glibc-2.37.orig/sysdeps/unix/sysv/linux/sparc/sparc32/clone.S
+++ glibc-2.37/sysdeps/unix/sysv/linux/sparc/sparc32/clone.S
@@ -28,6 +28,9 @@
.text
ENTRY (__clone)
save %sp,-96,%sp
+ save %sp,-96,%sp
+ flushw
+ restore
cfi_def_cfa_register(%fp)
cfi_window_save
cfi_register(%o7, %i7)
--- glibc-2.37.orig/sysdeps/unix/sysv/linux/sparc/sparc64/clone.S
+++ glibc-2.37/sysdeps/unix/sysv/linux/sparc/sparc64/clone.S
@@ -32,6 +32,9 @@
ENTRY (__clone)
save %sp, -192, %sp
+ save %sp, -192, %sp
+ flushw
+ restore
cfi_def_cfa_register(%fp)
cfi_window_save
cfi_register(%o7, %i7)
Reply to: