* [PATCH] x86 - Fencepost errors in compat ptrace
@ 2008-01-10 19:45 Jeff Dike
0 siblings, 0 replies; only message in thread
From: Jeff Dike @ 2008-01-10 19:45 UTC (permalink / raw)
To: Ingo Molnar; +Cc: LKML
The compat PTRACE_SETREGS and PTRACE_GETREGS are verifying_area
one word too few.
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
---
arch/x86/ia32/ptrace32.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/ia32/ptrace32.c b/arch/x86/ia32/ptrace32.c
index 4a233ad..e5d4eff 100644
--- a/arch/x86/ia32/ptrace32.c
+++ b/arch/x86/ia32/ptrace32.c
@@ -312,7 +312,7 @@ asmlinkage long sys32_ptrace(long request, u32 pid, u32 addr, u32 data)
case PTRACE_GETREGS: { /* Get all gp regs from the child. */
int i;
- if (!access_ok(VERIFY_WRITE, datap, 16*4)) {
+ if (!access_ok(VERIFY_WRITE, datap, 17*4)) {
ret = -EIO;
break;
}
@@ -328,7 +328,7 @@ asmlinkage long sys32_ptrace(long request, u32 pid, u32 addr, u32 data)
case PTRACE_SETREGS: { /* Set all gp regs in the child. */
unsigned long tmp;
int i;
- if (!access_ok(VERIFY_READ, datap, 16*4)) {
+ if (!access_ok(VERIFY_READ, datap, 17*4)) {
ret = -EIO;
break;
}
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2008-01-10 19:45 [PATCH] x86 - Fencepost errors in compat ptrace Jeff Dike
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