diff options
| author | Hugh Dickins <hugh@veritas.com> | 2005-08-01 21:11:42 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-08-01 21:38:00 -0700 |
| commit | 690dbe1ced143876d8fa56b72310738dbe079d0a (patch) | |
| tree | 4297d5647ce5e6cbe429dc506007579952c31015 /README | |
| parent | 74f9c9c258249fba3e2e78f70691528426a6c010 (diff) | |
[PATCH] x86_64: access of some bad address
x86_64 has a large sparse gate area between VSYSCALL_START and
VSYSCALL_END, not all of it presently backed by pmds. Alexander Nyberg has
found that in some circumstances gdb may try to ptrace here, and hit
get_user_pages BUG_ON. It seems odd that gdb should be accessing here, but
it certainly shouldn't crash in this way: relax BUG_ON to -EFAULT. Fixes
kernel bugzilla #4801.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'README')
0 files changed, 0 insertions, 0 deletions