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authorHugh Dickins <hugh@veritas.com>2005-08-01 21:11:42 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2005-08-01 21:38:00 -0700
commit690dbe1ced143876d8fa56b72310738dbe079d0a (patch)
tree4297d5647ce5e6cbe429dc506007579952c31015 /mm/mempolicy.c
parent74f9c9c258249fba3e2e78f70691528426a6c010 (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 'mm/mempolicy.c')
0 files changed, 0 insertions, 0 deletions