From: Dan Carpenter dan.carpenter@linaro.org
stable inclusion from stable-v6.6.7 commit 577209e844bf0e879f6bff128d4d80f0a5fd8ace category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8SSQ4
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit 85c2ceaafbd306814a3a4740bf4d95ac26a8b36a ]
The "err" variable is not initialized if damon_target_has_pid(ctx) is false and sys_target->regions->nr is zero.
Link: https://lkml.kernel.org/r/739e6aaf-a634-4e33-98a8-16546379ec9f@moroto.mounta... Fixes: 0bcd216c4741 ("mm/damon/sysfs: update monitoring target regions for online input commit") Signed-off-by: Dan Carpenter dan.carpenter@linaro.org Reviewed-by: SeongJae Park sj@kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com --- mm/damon/sysfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/damon/sysfs.c b/mm/damon/sysfs.c index faaef5098e26..b317f51dcc98 100644 --- a/mm/damon/sysfs.c +++ b/mm/damon/sysfs.c @@ -1172,7 +1172,7 @@ static int damon_sysfs_update_target(struct damon_target *target, struct damon_ctx *ctx, struct damon_sysfs_target *sys_target) { - int err; + int err = 0;
if (damon_target_has_pid(ctx)) { err = damon_sysfs_update_target_pid(target, sys_target->pid);