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| author | Lv Ruyi <lv.ruyi@zte.com.cn> | 2022-03-29 12:40:04 +0200 |
|---|---|---|
| committer | Steven Rostedt (Google) <rostedt@goodmis.org> | 2022-04-02 14:40:09 +0200 |
| commit | bed5b60bf67ccd8957b8c0558fead30c4a3f5d3f (patch) | |
| tree | c446bf231deeaa6a80c29fe4fe3dbfbe0ab37090 /fs | |
| parent | tracing: Rename the staging files for trace_events (diff) | |
| download | linux-bed5b60bf67ccd8957b8c0558fead30c4a3f5d3f.tar.xz linux-bed5b60bf67ccd8957b8c0558fead30c4a3f5d3f.zip | |
proc: bootconfig: Add null pointer check
kzalloc is a memory allocation function which can return NULL when some
internal memory errors happen. It is safer to add null pointer check.
Link: https://lkml.kernel.org/r/20220329104004.2376879-1-lv.ruyi@zte.com.cn
Cc: stable@vger.kernel.org
Fixes: c1a3c36017d4 ("proc: bootconfig: Add /proc/bootconfig to show boot config list")
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Lv Ruyi <lv.ruyi@zte.com.cn>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/proc/bootconfig.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/proc/bootconfig.c b/fs/proc/bootconfig.c index 6d8d4bf20837..2e244ada1f97 100644 --- a/fs/proc/bootconfig.c +++ b/fs/proc/bootconfig.c @@ -32,6 +32,8 @@ static int __init copy_xbc_key_value_list(char *dst, size_t size) int ret = 0; key = kzalloc(XBC_KEYLEN_MAX, GFP_KERNEL); + if (!key) + return -ENOMEM; xbc_for_each_key_value(leaf, val) { ret = xbc_node_compose_key(leaf, key, XBC_KEYLEN_MAX); |