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authorWenlin Kang <wenlin.kang@windriver.com>2019-05-13 16:57:20 +0800
committerDaniel Thompson <daniel.thompson@linaro.org>2019-05-14 13:44:24 +0100
commitca976bfb3154c7bc67c4651ecd144fdf67ccaee7 (patch)
treec14984408a43c210a00b4a24334a52f36462fccc /kernel/debug
parentb586627e10f57ee3aa8f0cfab0d6f7dc4ae63760 (diff)
downloadlinux-ca976bfb3154c7bc67c4651ecd144fdf67ccaee7.tar.bz2
kdb: Fix bound check compiler warning
The strncpy() function may leave the destination string buffer unterminated, better use strscpy() instead. This fixes the following warning with gcc 8.2: kernel/debug/kdb/kdb_io.c: In function 'kdb_getstr': kernel/debug/kdb/kdb_io.c:449:3: warning: 'strncpy' specified bound 256 equals destination size [-Wstringop-truncation] strncpy(kdb_prompt_str, prompt, CMD_BUFLEN); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Signed-off-by: Wenlin Kang <wenlin.kang@windriver.com> Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Diffstat (limited to 'kernel/debug')
-rw-r--r--kernel/debug/kdb/kdb_io.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/debug/kdb/kdb_io.c b/kernel/debug/kdb/kdb_io.c
index 6a4b41484afe..3a5184eb6977 100644
--- a/kernel/debug/kdb/kdb_io.c
+++ b/kernel/debug/kdb/kdb_io.c
@@ -446,7 +446,7 @@ poll_again:
char *kdb_getstr(char *buffer, size_t bufsize, const char *prompt)
{
if (prompt && kdb_prompt_str != prompt)
- strncpy(kdb_prompt_str, prompt, CMD_BUFLEN);
+ strscpy(kdb_prompt_str, prompt, CMD_BUFLEN);
kdb_printf(kdb_prompt_str);
kdb_nextline = 1; /* Prompt and input resets line number */
return kdb_read(buffer, bufsize);