Messages in this thread Patch in this message | | | Date | Thu, 10 Jan 2008 14:45:05 -0500 | From | Jeff Dike <> | Subject | [PATCH] x86 - Fencepost errors in compat ptrace |
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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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