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authorJean Delvare <jdelvare@suse.de>2017-10-03 16:16:35 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-10-03 17:54:26 -0700
commit90ceb2a3ad868f800eb1c9f4ede650daddd94b77 (patch)
treed6e2e4748e25bdcdaeb0972954abacf1cc74f00c /kernel/params.c
parentd09b0137d204bebeaafed672bc5a244e9ac92edb (diff)
downloadlinux-90ceb2a3ad868f800eb1c9f4ede650daddd94b77.tar.bz2
kernel/params.c: fix the maximum length in param_get_string
The length parameter of strlcpy() is supposed to reflect the size of the target buffer, not of the source string. Harmless in this case as the buffer is PAGE_SIZE long and the source string is always much shorter than this, but conceptually wrong, so let's fix it. Link: http://lkml.kernel.org/r/20170928162515.24846b4f@endymion Signed-off-by: Jean Delvare <jdelvare@suse.de> Acked-by: Ingo Molnar <mingo@kernel.org> Cc: Baoquan He <bhe@redhat.com> Cc: Michal Hocko <mhocko@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/params.c')
-rw-r--r--kernel/params.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/params.c b/kernel/params.c
index 1cd8f1a895a8..8283ba045f4f 100644
--- a/kernel/params.c
+++ b/kernel/params.c
@@ -507,7 +507,7 @@ EXPORT_SYMBOL(param_set_copystring);
int param_get_string(char *buffer, const struct kernel_param *kp)
{
const struct kparam_string *kps = kp->str;
- return strlcpy(buffer, kps->string, kps->maxlen);
+ return strlcpy(buffer, kps->string, PAGE_SIZE);
}
EXPORT_SYMBOL(param_get_string);