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| author | Trond Myklebust <trond.myklebust@primarydata.com> | 2015-04-23 15:16:37 -0400 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@primarydata.com> | 2015-04-23 15:16:37 -0400 |
| commit | f139b6c676c7e49b66016b28bf3f8ec5c54be891 (patch) | |
| tree | 742f00e431dded1daf642b44f4c199b318f255dc /fs/proc/task_mmu.c | |
| parent | 21330b667070fd64b2340d8d31c1b0800df78ec8 (diff) | |
| parent | d654788e98f74f2df8dfc6079fa314938f739486 (diff) | |
Merge tag 'nfs-rdma-for-4.1-1' of git://git.linux-nfs.org/projects/anna/nfs-rdma
NFS: NFSoRDMA Client Changes
This patch series creates an operation vector for each of the different
memory registration modes. This should make it easier to one day increase
credit limit, rsize, and wsize.
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'fs/proc/task_mmu.c')
| -rw-r--r-- | fs/proc/task_mmu.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index 956b75d61809..6dee68d013ff 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -1325,6 +1325,9 @@ out: static int pagemap_open(struct inode *inode, struct file *file) { + /* do not disclose physical addresses: attack vector */ + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; pr_warn_once("Bits 55-60 of /proc/PID/pagemap entries are about " "to stop being page-shift some time soon. See the " "linux/Documentation/vm/pagemap.txt for details.\n"); |