->permission() sanitizing: MAY_NOT_BLOCK
Duplicate the flags argument into mask bitmap.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
index d167de3..349b22f 100644
--- a/fs/proc/proc_sysctl.c
+++ b/fs/proc/proc_sysctl.c
@@ -316,7 +316,7 @@
if (!table) /* global root - r-xr-xr-x */
error = mask & MAY_WRITE ? -EACCES : 0;
else /* Use the permissions on the sysctl table entry */
- error = sysctl_perm(head->root, table, mask);
+ error = sysctl_perm(head->root, table, mask & ~MAY_NOT_BLOCK);
sysctl_head_finish(head);
return error;