[klibc] [klibc:master] ia64: Fix invalid memory access in vfork
klibc-bot for Jessica Clarke
jrtc27 at jrtc27.com
Sat Aug 29 10:57:04 PDT 2020
Commit-ID: faf48679047c91ac27dbb435d9189d0f0d59cb70
Gitweb: http://git.kernel.org/?p=libs/klibc/klibc.git;a=commit;h=faf48679047c91ac27dbb435d9189d0f0d59cb70
Author: Jessica Clarke <jrtc27 at jrtc27.com>
AuthorDate: Sat, 2 Feb 2019 02:29:47 +0100
Committer: Ben Hutchings <ben at decadent.org.uk>
CommitDate: Sat, 29 Aug 2020 18:53:30 +0100
[klibc] ia64: Fix invalid memory access in vfork
Commit 8418552 ("[klibc] ia64: Fix shared build") missed this use of the
GP register, although the code appears to have been dubious anyway,
assuming the address of errno was the first thing pointed to by GP.
Signed-off-by: Jessica Clarke <jrtc27 at jrtc27.com>
Signed-off-by: Ben Hutchings <ben at decadent.org.uk>
---
usr/klibc/arch/ia64/vfork.S | 6 +-----
1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/usr/klibc/arch/ia64/vfork.S b/usr/klibc/arch/ia64/vfork.S
index 7e76a714..e513188b 100644
--- a/usr/klibc/arch/ia64/vfork.S
+++ b/usr/klibc/arch/ia64/vfork.S
@@ -26,16 +26,12 @@ vfork:
mov r15=__NR_clone
mov out0=CLONE_VM|CLONE_VFORK|SIGCHLD
mov out1=0
- ;;
break 0x100000 // Do the syscall
- ;;
- addl r15=0,r1
cmp.eq p7,p6 = -1,r10
;;
- ld8 r14=[r15]
+(p7) movl r14 = errno
;;
(p7) st4 [r14]=r8
- ;;
(p7) mov r8=-1
br.ret.sptk.many b0
.endp vfork
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