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btreplay: fix memory corruption caused by CPU_ZERO_S
author
Roman Pen
<r.peniaev@gmail.com>
Sat, 23 Apr 2016 11:44:08 +0000
(13:44 +0200)
committer
Jens Axboe
<axboe@fb.com>
Mon, 25 Apr 2016 14:53:16 +0000
(08:53 -0600)
Size should be provided, not cpus number.
Signed-off-by: Roman Pen <r.peniaev@gmail.com>
Cc: Jens Axboe <axboe@fb.com>
Cc: <linux-btrace@vger.kernel.org>
Signed-off-by: Jens Axboe <axboe@fb.com>
btreplay/btreplay.c
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diff --git
a/btreplay/btreplay.c
b/btreplay/btreplay.c
index 6d195640a3792ad2929fefcddd9fad9cc74f5f29..2a1525e046620ecae71d2b8eea88b8da921c7e93 100644
(file)
--- a/
btreplay/btreplay.c
+++ b/
btreplay/btreplay.c
@@
-550,7
+550,7
@@
static void pin_to_cpu(struct thr_info *tip)
assert(0 <= tip->cpu && tip->cpu < ncpus);
- CPU_ZERO_S(
ncpus
, cpus);
+ CPU_ZERO_S(
size
, cpus);
CPU_SET_S(tip->cpu, size, cpus);
if (sched_setaffinity(getpid(), size, cpus)) {
fatal("sched_setaffinity", ERR_SYSCALL, "Failed to pin CPU\n");