diff options
| author | James Bottomley <JBottomley@Parallels.com> | 2012-05-16 11:10:27 +0100 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2012-05-16 13:15:21 +0100 |
| commit | b3cb8674811d1851bbf1486a73d62b90c119b994 (patch) | |
| tree | c2158cee689175a1fae57767ab8b4c955d0a237c /block/genhd.c | |
| parent | 207f583d7179f707f402c36a7bda5ca1fd03ad5b (diff) | |
[PARISC] fix panic on prefetch(NULL) on PA7300LC
Due to an errata, the PA7300LC generates a TLB miss interruption even on the
prefetch instruction. This means that prefetch(NULL), which is supposed to be
a nop on linux actually generates a NULL deref fault. Fix this by testing the
address of prefetch against NULL before doing the prefetch.
Cc: stable@vger.kernel.org
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'block/genhd.c')
0 files changed, 0 insertions, 0 deletions