Commit 71879d3c authored Jan 31, 2012 by Oleg Nesterov Committed by Linus Torvalds Feb 01, 2012

proc: mem_release() should check mm != NULL



mem_release() can hit mm == NULL, add the necessary check.

Cc: stable@kernel.org
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 879a5a00

fs/proc/base.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -822,7 +822,7 @@ loff_t mem_lseek(struct file *file, loff_t offset, int orig)
		static int mem_release(struct inode inode, struct file file)
		{
		struct mm_struct *mm = file->private_data;

		if (mm)
		mmput(mm);
		return 0;
		}