diff options
| author | Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> | 2009-03-26 10:03:08 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-04-01 17:13:17 +0200 |
| commit | 0f8f308925ebe0480bd9831d32963ee0b885e24b (patch) | |
| tree | 3a4bef09e978eb314b7172738bc92dfdfece65c3 /Documentation/DocBook/mcabook.tmpl | |
| parent | 93394a761d78503f11d05b1a7b23d5a9ccc8dad2 (diff) | |
x86: signal: check sas_ss_size instead of sas_ss_flags()
Impact: fix redundant and incorrect check
Oleg Nesterov noticed wrt commit:
14fc9fb: x86: signal: check signal stack overflow properly
>> No need to check SA_ONSTACK if we're already using alternate signal stack.
>
> Yes, but this also mean that we don't need sas_ss_flags() under
> "if (!onsigstack)",
Checking on_sig_stack() in sas_ss_flags() at get_sigframe() is redundant
and not correct on 64 bit. To check sas_ss_size is enough.
Reported-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Cc: roland@redhat.com
LKML-Reference: <49CBB54C.5080201@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'Documentation/DocBook/mcabook.tmpl')
0 files changed, 0 insertions, 0 deletions