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pstore: add vmalloc error check
If vmalloc fails, make write_pmsg return -ENOMEM. Signed-off-by: Geliang Tang <geliangtang@163.com> Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
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@ -37,6 +37,8 @@ static ssize_t write_pmsg(struct file *file, const char __user *buf,
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if (buffer_size > PMSG_MAX_BOUNCE_BUFFER_SIZE)
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buffer_size = PMSG_MAX_BOUNCE_BUFFER_SIZE;
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buffer = vmalloc(buffer_size);
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if (!buffer)
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return -ENOMEM;
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mutex_lock(&pmsg_lock);
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for (i = 0; i < count; ) {
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