On Tue, Mar 03, 2020 at 02:07:32PM +0300, Cengiz Can wrote:
Added a reassignment into the NULL check block to fix the issue.
Fixes: c780e86dd48 ("blktrace: Protect q->blk_trace with RCU")
Signed-off-by: Cengiz Can cengiz@kernel.wtf
kernel/trace/blktrace.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c index 4560878f0bac..29ea88f10b87 100644 --- a/kernel/trace/blktrace.c +++ b/kernel/trace/blktrace.c @@ -1896,8 +1896,10 @@ static ssize_t sysfs_blk_trace_attr_store(struct device *dev, }
ret = 0;
- if (bt == NULL)
if (bt == NULL) { ret = blk_trace_setup_queue(q, bdev);
bt = q->blk_trace;}
if (ret == 0) { if (attr == &dev_attr_act_mask)
-- 2.25.1
<formletter>
This is not the correct way to submit patches for inclusion in the stable kernel tree. Please read: https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html for how to do this properly.
</formletter>