* [PATCH] apparmor: Fix an error code in verify_table_headers()
@ 2018-03-19 9:12 Dan Carpenter
2018-03-24 0:27 ` John Johansen
0 siblings, 1 reply; 2+ messages in thread
From: Dan Carpenter @ 2018-03-19 9:12 UTC (permalink / raw)
To: linux-security-module
We accidentally return a positive EPROTO instead of a negative -EPROTO.
Since 71 is not an error pointer, that means it eventually results in an
Oops in the caller.
Fixes: d901d6a298dc ("apparmor: dfa split verification of table headers")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
diff --git a/security/apparmor/match.c b/security/apparmor/match.c
index dd4c995c5e25..280eba082c7b 100644
--- a/security/apparmor/match.c
+++ b/security/apparmor/match.c
@@ -198,7 +198,7 @@ static int verify_table_headers(struct table_header **tables, int flags)
static int verify_dfa(struct aa_dfa *dfa)
{
size_t i, state_count, trans_count;
- int error = EPROTO;
+ int error = -EPROTO;
state_count = dfa->tables[YYTD_ID_BASE]->td_lolen;
trans_count = dfa->tables[YYTD_ID_NXT]->td_lolen;
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^ permalink raw reply related [flat|nested] 2+ messages in thread* [PATCH] apparmor: Fix an error code in verify_table_headers()
2018-03-19 9:12 [PATCH] apparmor: Fix an error code in verify_table_headers() Dan Carpenter
@ 2018-03-24 0:27 ` John Johansen
0 siblings, 0 replies; 2+ messages in thread
From: John Johansen @ 2018-03-24 0:27 UTC (permalink / raw)
To: linux-security-module
On 03/19/2018 02:12 AM, Dan Carpenter wrote:
> We accidentally return a positive EPROTO instead of a negative -EPROTO.
> Since 71 is not an error pointer, that means it eventually results in an
> Oops in the caller.
>
> Fixes: d901d6a298dc ("apparmor: dfa split verification of table headers")
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
>
ouch, and pulled into apparmor-next
Acked-by: John Johansen <john.johansen@canonical.com>
> diff --git a/security/apparmor/match.c b/security/apparmor/match.c
> index dd4c995c5e25..280eba082c7b 100644
> --- a/security/apparmor/match.c
> +++ b/security/apparmor/match.c
> @@ -198,7 +198,7 @@ static int verify_table_headers(struct table_header **tables, int flags)
> static int verify_dfa(struct aa_dfa *dfa)
> {
> size_t i, state_count, trans_count;
> - int error = EPROTO;
> + int error = -EPROTO;
>
> state_count = dfa->tables[YYTD_ID_BASE]->td_lolen;
> trans_count = dfa->tables[YYTD_ID_NXT]->td_lolen;
>
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