[PATCH] block-throttle: set q->td to NULL if blkcg_activate_policy failed
From: Zheng Bin <hidden>
Date: 2020-08-05 17:39:41
Also in:
cgroups
Subsystem:
block layer, control group - block io controller (blkio), the rest · Maintainers:
Jens Axboe, Tejun Heo, Josef Bacik, Linus Torvalds
Otherwise q->td will point to the released memory, although there is no access to q->td in the following process, still recommend to do this. Signed-off-by: Zheng Bin <redacted> --- block/blk-throttle.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/block/blk-throttle.c b/block/blk-throttle.c
index fee3325edf27..05b87516eee9 100644
--- a/block/blk-throttle.c
+++ b/block/blk-throttle.c@@ -2399,6 +2399,7 @@ int blk_throtl_init(struct request_queue *q) free_percpu(td->latency_buckets[READ]); free_percpu(td->latency_buckets[WRITE]); kfree(td); + q->td = NULL; } return ret; } --
2.25.4