The patch titled Subject: ipc: tighten msg copy loops has been removed from the -mm tree. Its filename was ipc-tighten-msg-copy-loops.patch This patch was dropped because it was merged into mainline or a subsystem tree ------------------------------------------------------ From: Peter Hurley <peter@xxxxxxxxxxxxxxxxxx> Subject: ipc: tighten msg copy loops Signed-off-by: Peter Hurley <peter@xxxxxxxxxxxxxxxxxx> Acked-by: Stanislav Kinsbursky <skinsbursky@xxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- ipc/msgutil.c | 32 +++++++++++--------------------- 1 file changed, 11 insertions(+), 21 deletions(-) diff -puN ipc/msgutil.c~ipc-tighten-msg-copy-loops ipc/msgutil.c --- a/ipc/msgutil.c~ipc-tighten-msg-copy-loops +++ a/ipc/msgutil.c @@ -97,18 +97,14 @@ struct msg_msg *load_msg(const void __us goto out_err; } - len -= alen; - src = ((char __user *)src) + alen; - seg = msg->next; - while (len > 0) { + for (seg = msg->next; seg != NULL; seg = seg->next) { + len -= alen; + src = (char __user *)src + alen; alen = min(len, DATALEN_SEG); if (copy_from_user(seg + 1, src, alen)) { err = -EFAULT; goto out_err; } - seg = seg->next; - len -= alen; - src = ((char __user *)src) + alen; } err = security_msg_msg_alloc(msg); @@ -135,15 +131,13 @@ struct msg_msg *copy_msg(struct msg_msg alen = min(len, DATALEN_MSG); memcpy(dst + 1, src + 1, alen); - len -= alen; - dst_pseg = dst->next; - src_pseg = src->next; - while (len > 0) { + for (dst_pseg = dst->next, src_pseg = src->next; + src_pseg != NULL; + dst_pseg = dst_pseg->next, src_pseg = src_pseg->next) { + + len -= alen; alen = min(len, DATALEN_SEG); memcpy(dst_pseg + 1, src_pseg + 1, alen); - dst_pseg = dst_pseg->next; - len -= alen; - src_pseg = src_pseg->next; } dst->m_type = src->m_type; @@ -166,16 +160,12 @@ int store_msg(void __user *dest, struct if (copy_to_user(dest, msg + 1, alen)) return -1; - len -= alen; - dest = ((char __user *)dest) + alen; - seg = msg->next; - while (len > 0) { + for (seg = msg->next; seg != NULL; seg = seg->next) { + len -= alen; + dest = (char __user *)dest + alen; alen = min(len, DATALEN_SEG); if (copy_to_user(dest, seg + 1, alen)) return -1; - len -= alen; - dest = ((char __user *)dest) + alen; - seg = seg->next; } return 0; } _ Patches currently in -mm which might be from peter@xxxxxxxxxxxxxxxxxx are origin.patch linux-next.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html