diff options
| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-08 03:43:32 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-08 03:43:32 +0000 |
| commit | f530fbb7a18f2794e4178dfb7cd07719b9586147 (patch) | |
| tree | 3f704b17427743e26452771cf7da2ed110346ddd /drivers/gpu/drm/drm_ioctl.c | |
| parent | Adding debian version 4.19.260-1. (diff) | |
| download | linux-f530fbb7a18f2794e4178dfb7cd07719b9586147.tar.xz linux-f530fbb7a18f2794e4178dfb7cd07719b9586147.zip | |
Merging upstream version 4.19.269.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/drm/drm_ioctl.c')
| -rw-r--r-- | drivers/gpu/drm/drm_ioctl.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c index babd7ebab..2651bfb76 100644 --- a/drivers/gpu/drm/drm_ioctl.c +++ b/drivers/gpu/drm/drm_ioctl.c @@ -458,7 +458,13 @@ EXPORT_SYMBOL(drm_invalid_op); */ static int drm_copy_field(char __user *buf, size_t *buf_len, const char *value) { - int len; + size_t len; + + /* don't attempt to copy a NULL pointer */ + if (WARN_ONCE(!value, "BUG: the value to copy was not set!")) { + *buf_len = 0; + return 0; + } /* don't overflow userbuf */ len = strlen(value); |