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Message-ID: <20251021145700.38374-1-biancaa2210329@ssn.edu.in>
Date: Tue, 21 Oct 2025 20:27:00 +0530
From: Biancaa Ramesh <biancaa2210329@....edu.in>
To: linux-kernel@...r.kernel.org
Cc: Biancaa Ramesh <biancaa2210329@....edu.in>
Subject: [PATCH] replace strcpy with strscpy for safe copy
Signed-off-by: Biancaa Ramesh <biancaa2210329@....edu.in>
---
mm/shmem.c | 23 ++++++++++++-----------
1 file changed, 12 insertions(+), 11 deletions(-)
diff --git a/mm/shmem.c b/mm/shmem.c
index b9081b817d28..6e5a5d6fc7e9 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -657,17 +657,18 @@ static int shmem_parse_huge(const char *str)
if (!str)
return -EINVAL;
- if (!strcmp(str, "never"))
+ if (!strncmp(str,"never",strlen("never")+1)){
huge = SHMEM_HUGE_NEVER;
- else if (!strcmp(str, "always"))
+ }
+ else if (!strncmp(str, "always", strlen("always") + 1))
huge = SHMEM_HUGE_ALWAYS;
- else if (!strcmp(str, "within_size"))
+ else if (!strncmp(str, "within_size",strlen("Within_size")+1))
huge = SHMEM_HUGE_WITHIN_SIZE;
- else if (!strcmp(str, "advise"))
+ else if (!strncmp(str,"advise",strlen("advise")+1))
huge = SHMEM_HUGE_ADVISE;
- else if (!strcmp(str, "deny"))
+ else if (!strncmp(str,"deny",strlen("deny")+1))
huge = SHMEM_HUGE_DENY;
- else if (!strcmp(str, "force"))
+ else if (!strncmp(str,"force",strlen("force")+1))
huge = SHMEM_HUGE_FORCE;
else
return -EINVAL;
@@ -5679,27 +5680,27 @@ static int __init setup_thp_shmem(char *str)
goto err;
nr = end - start + 1;
- if (!strcmp(policy, "always")) {
+ if (!strncmp(policy,"always",strlen("always")+1)){
bitmap_set(&always, start, nr);
bitmap_clear(&inherit, start, nr);
bitmap_clear(&madvise, start, nr);
bitmap_clear(&within_size, start, nr);
- } else if (!strcmp(policy, "advise")) {
+ } else if (!strncmp(policy,"advise",strlen("advise")+1)){
bitmap_set(&madvise, start, nr);
bitmap_clear(&inherit, start, nr);
bitmap_clear(&always, start, nr);
bitmap_clear(&within_size, start, nr);
- } else if (!strcmp(policy, "inherit")) {
+ } else if (!strncmp(policy,"inherit",strlen("inherit")+1)){
bitmap_set(&inherit, start, nr);
bitmap_clear(&madvise, start, nr);
bitmap_clear(&always, start, nr);
bitmap_clear(&within_size, start, nr);
- } else if (!strcmp(policy, "within_size")) {
+ } else if (!strncmp(policy,"within_size",strlen("within_size")+1)){
bitmap_set(&within_size, start, nr);
bitmap_clear(&inherit, start, nr);
bitmap_clear(&madvise, start, nr);
bitmap_clear(&always, start, nr);
- } else if (!strcmp(policy, "never")) {
+ } else if (!strncmp(policy,"never",strlen("never")+1)){
bitmap_clear(&inherit, start, nr);
bitmap_clear(&madvise, start, nr);
bitmap_clear(&always, start, nr);
--
2.43.0
--
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