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| author | Li Jun <lijun01@kylinos.cn> | 2026-06-10 08:38:14 +0800 |
|---|---|---|
| committer | Frank Li <Frank.Li@nxp.com> | 2026-06-29 16:40:53 -0400 |
| commit | 4cf26bc2e7e099c86127d63ed7272753da45737e (patch) | |
| tree | 5e7d6566373aa784eadf80dc2a9187ec400f8373 /drivers/firmware | |
| parent | 3de939b2ac843d56d88e2ab1e1b1f667cba9e1d4 (diff) | |
| download | linux-next-4cf26bc2e7e099c86127d63ed7272753da45737e.tar.gz linux-next-4cf26bc2e7e099c86127d63ed7272753da45737e.zip | |
firmware: imx: sm-misc: Add NULL check for kmalloc in syslog_show
Add a proper NULL check for the kmalloc() return value in syslog_show().
If memory allocation fails, syslog would be NULL and passing it to
misc_syslog() could lead to a NULL pointer dereference.
Fixes: 80a4062e8821 ("firmware: imx: sm-misc: Dump syslog info")
Signed-off-by: Li Jun <lijun01@kylinos.cn>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Diffstat (limited to 'drivers/firmware')
| -rw-r--r-- | drivers/firmware/imx/sm-misc.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/firmware/imx/sm-misc.c b/drivers/firmware/imx/sm-misc.c index ac9af824c2d4..fb8d7bdb5b08 100644 --- a/drivers/firmware/imx/sm-misc.c +++ b/drivers/firmware/imx/sm-misc.c @@ -79,6 +79,9 @@ static int syslog_show(struct seq_file *file, void *priv) u16 size = SZ_4K / 4; int ret; + if (!syslog) + return -ENOMEM; + if (!ph) return -ENODEV; |