The patch titled Subject: mm/damon/sysfs: eliminate potential uninitialized variable warning has been added to the -mm mm-hotfixes-unstable branch. Its filename is mm-damon-sysfs-eliminate-potential-uninitialized-variable-warning.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-damon-sysfs-eliminate-potential-uninitialized-variable-warning.patch This patch will later appear in the mm-hotfixes-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm 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/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Dan Carpenter <dan.carpenter@xxxxxxxxxx> Subject: mm/damon/sysfs: eliminate potential uninitialized variable warning Date: Mon, 6 Nov 2023 17:07:40 +0300 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.mountain Fixes: 0bcd216c4741 ("mm/damon/sysfs: update monitoring target regions for online input commit") Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> Reviewed-by: SeongJae Park <sj@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/damon/sysfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/mm/damon/sysfs.c~mm-damon-sysfs-eliminate-potential-uninitialized-variable-warning +++ a/mm/damon/sysfs.c @@ -1172,7 +1172,7 @@ static int damon_sysfs_update_target(str 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); _ Patches currently in -mm which might be from dan.carpenter@xxxxxxxxxx are mm-damon-sysfs-eliminate-potential-uninitialized-variable-warning.patch