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authorThomas Gleixner <tglx@linutronix.de>2016-11-16 14:19:34 +0100
committerThomas Gleixner <tglx@linutronix.de>2016-11-16 14:19:34 +0100
commit7ce7f35b33eb42b6aa4cf176fa34372b21b8472b (patch)
tree12f3027003f1d7cce30f838265e4fab2d52c6cef /fs/proc
parentx86/intel_rdt: Update percpu closid immeditately on CPUs affected by changee (diff)
parentx86/cpuid: Provide get_scattered_cpuid_leaf() (diff)
downloadlinux-7ce7f35b33eb42b6aa4cf176fa34372b21b8472b.tar.xz
linux-7ce7f35b33eb42b6aa4cf176fa34372b21b8472b.zip
Merge branch 'x86/cpufeature' into x86/cache
Resolve the cpu/scattered conflict. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'fs/proc')
-rw-r--r--fs/proc/base.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c
index adfc5b4986f5..ca651ac00660 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -1012,6 +1012,9 @@ static ssize_t auxv_read(struct file *file, char __user *buf,
{
struct mm_struct *mm = file->private_data;
unsigned int nwords = 0;
+
+ if (!mm)
+ return 0;
do {
nwords += 2;
} while (mm->saved_auxv[nwords - 2] != 0); /* AT_NULL */