The patch titled
Subject: relay: check array offset before using it
has been added to the -mm tree. Its filename is
relay-check-array-offset-before-using-it.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/relay-check-array-offset-before-using-it.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/relay-check-array-offset-before-using-it.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Subject: relay: check array offset before using it
Smatch complains that we started using the array offset before we
checked that it was valid.
Fixes: 017c59c042d0 ('relay: Use per CPU constructs for the relay channel buffer pointers')
Link: http://lkml.kernel.org/r/20161013084947.GC16198@mwanda
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/relay.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff -puN kernel/relay.c~relay-check-array-offset-before-using-it kernel/relay.c
--- a/kernel/relay.c~relay-check-array-offset-before-using-it
+++ a/kernel/relay.c
@@ -809,11 +809,11 @@ void relay_subbufs_consumed(struct rchan
{
struct rchan_buf *buf;
- if (!chan)
+ if (!chan || cpu >= NR_CPUS)
return;
buf = *per_cpu_ptr(chan->buf, cpu);
- if (cpu >= NR_CPUS || !buf || subbufs_consumed > chan->n_subbufs)
+ if (!buf || subbufs_consumed > chan->n_subbufs)
return;
if (subbufs_consumed > buf->subbufs_produced - buf->subbufs_consumed)
_
Patches currently in -mm which might be from dan.carpenter@xxxxxxxxxx are
relay-check-array-offset-before-using-it.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
