Author: wma
Date: Wed Jan 17 09:36:48 2018
New Revision: 328079
URL: https://svnweb.freebsd.org/changeset/base/328079
Log:
PPC64: fix copyinout ranges
Use current userspace address for segment mapping. Previously,
there was a bug which made the funciton constantly using the userspace
base address which could cause data integrity issues.
Created by: Wojciech Macek <w...@semihalf.com>
Obtained from: Semihalf
Sponsored by: QCM Technologies
Modified:
head/sys/powerpc/powerpc/copyinout.c
Modified: head/sys/powerpc/powerpc/copyinout.c
==============================================================================
--- head/sys/powerpc/powerpc/copyinout.c Wed Jan 17 09:33:16 2018
(r328078)
+++ head/sys/powerpc/powerpc/copyinout.c Wed Jan 17 09:36:48 2018
(r328079)
@@ -94,7 +94,7 @@ copyout(const void *kaddr, void *udaddr, size_t len)
up = udaddr;
while (len > 0) {
- if (pmap_map_user_ptr(pm, udaddr, (void **)&p, len, &l)) {
+ if (pmap_map_user_ptr(pm, up, (void **)&p, len, &l)) {
td->td_pcb->pcb_onfault = NULL;
return (EFAULT);
}
@@ -133,7 +133,7 @@ copyin(const void *udaddr, void *kaddr, size_t len)
up = udaddr;
while (len > 0) {
- if (pmap_map_user_ptr(pm, udaddr, (void **)&p, len, &l)) {
+ if (pmap_map_user_ptr(pm, up, (void **)&p, len, &l)) {
td->td_pcb->pcb_onfault = NULL;
return (EFAULT);
}
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