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| author | Madhavan Srinivasan <maddy@linux.vnet.ibm.com> | 2013-10-02 00:34:10 +0530 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2013-10-26 21:06:07 +0100 |
| commit | 28cfcc851d5c8a7075ea8bb9b8695bb376f6872d (patch) | |
| tree | 9b098d681e5cc3c143208c75c6dabb508f3af0cc /net/unix/sysctl_net_unix.c | |
| parent | 0b2d10f8f2e686c9f4b718251765f09f77ee8088 (diff) | |
powerpc/sysfs: Disable writing to PURR in guest mode
commit d1211af3049f4c9c1d8d4eb8f8098cc4f4f0d0c7 upstream.
arch/powerpc/kernel/sysfs.c exports PURR with write permission.
This may be valid for kernel in phyp mode. But writing to
the file in guest mode causes crash due to a priviledge violation
Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
[bwh: Backported to 3.2:
- Adjust context
- CPUs are sysdev and we must use the sysdev API]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'net/unix/sysctl_net_unix.c')
0 files changed, 0 insertions, 0 deletions