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authorRussell King <rmk+kernel@arm.linux.org.uk>2010-07-26 12:18:16 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2010-07-26 12:18:16 +0100
commit4609a179c97ae60fef173547a9bbb214359808ce (patch)
treea36f01e2e29446da9a90cd6f4d416ff9c790091a
parentf9578fc07832ee8db8b0fbde489e00ad35452ac9 (diff)
downloadlinux-linaro-4609a179c97ae60fef173547a9bbb214359808ce.tar.gz
ARM: Fix csum_partial_copy_from_user()
Using the parent functions frame pointer to access our arguments is completely wrong, whether or not we're building with frame pointers or not. What we should be using is the stack pointer to get at the word above the registers we stacked ourselves. Reported-by: Bosko Radivojevic <bosko.radivojevic@gmail.com> Tested-by: Bosko Radivojevic <bosko.radivojevic@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
-rw-r--r--arch/arm/lib/csumpartialcopyuser.S2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/lib/csumpartialcopyuser.S b/arch/arm/lib/csumpartialcopyuser.S
index 59ff6fdc1e6..7d08b43d2c0 100644
--- a/arch/arm/lib/csumpartialcopyuser.S
+++ b/arch/arm/lib/csumpartialcopyuser.S
@@ -71,7 +71,7 @@
.pushsection .fixup,"ax"
.align 4
9001: mov r4, #-EFAULT
- ldr r5, [fp, #4] @ *err_ptr
+ ldr r5, [sp, #8*4] @ *err_ptr
str r4, [r5]
ldmia sp, {r1, r2} @ retrieve dst, len
add r2, r2, r1