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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>
This commit is contained in:
Geliang Tang 2015-10-20 00:39:01 -07:00 committed by Tony Luck
parent 7379047d55
commit 549b39a9e7
1 changed files with 2 additions and 0 deletions
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2
fs/pstore/pmsg.c
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@ -37,6 +37,8 @@ static ssize_t write_pmsg(struct file *file, const char __user *buf,
if (buffer_size > PMSG_MAX_BOUNCE_BUFFER_SIZE) if (buffer_size > PMSG_MAX_BOUNCE_BUFFER_SIZE)
buffer_size = PMSG_MAX_BOUNCE_BUFFER_SIZE; buffer_size = PMSG_MAX_BOUNCE_BUFFER_SIZE;
buffer = vmalloc(buffer_size); buffer = vmalloc(buffer_size);
if (!buffer)
return -ENOMEM;
mutex_lock(&pmsg_lock); mutex_lock(&pmsg_lock);
for (i = 0; i < count; ) { for (i = 0; i < count; ) {