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dma-buf/sw_sync: Replace all non-returning strlcpy with strscpy

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strlcpy() reads the entire source buffer first.
This read may exceed the destination size limit.
This is both inefficient and can lead to linear read
overflows if a source string is not NUL-terminated [1].
In an effort to remove strlcpy() completely [2], replace
strlcpy() here with strscpy().
No return values were used, so direct replacement is safe.

[1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strlcpy
[2] https://github.com/KSPP/linux/issues/89

Signed-off-by: Azeem Shaikh <azeemshaikh38@gmail.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230523021943.2406847-1-azeemshaikh38@gmail.com
This commit is contained in:
Azeem Shaikh 2023-05-23 02:19:43 +00:00 committed by Sumit Semwal
parent 6a038f0183
commit 5565a8e1a0
1 changed files with 1 additions and 1 deletions
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2
drivers/dma-buf/sw_sync.c
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@ -85,7 +85,7 @@ static struct sync_timeline *sync_timeline_create(const char *name)
kref_init(&obj->kref);
obj->context = dma_fence_context_alloc(1);
strlcpy(obj->name, name, sizeof(obj->name));
strscpy(obj->name, name, sizeof(obj->name));
obj->pt_tree = RB_ROOT;
INIT_LIST_HEAD(&obj->pt_list);