* [LTP] [PATCH 1/2] stack_clash: Guard functions used only in 64bit
@ 2023-10-24 8:49 Petr Vorel
2023-10-24 8:49 ` [LTP] [PATCH 2/2] stack_clash: Compile with -Wno-infinite-recursion Petr Vorel
2023-10-25 9:29 ` [LTP] [PATCH 1/2] stack_clash: Guard functions used only in 64bit Cyril Hrubis
0 siblings, 2 replies; 8+ messages in thread
From: Petr Vorel @ 2023-10-24 8:49 UTC (permalink / raw)
To: ltp; +Cc: Rick Edgecombe, Pavel Boldin
To avoid "defined but not used" warnings when compiled on 32bit.
Signed-off-by: Petr Vorel <pvorel@suse.cz>
---
testcases/cve/stack_clash.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/testcases/cve/stack_clash.c b/testcases/cve/stack_clash.c
index 3a99c49bb..56b970a1b 100644
--- a/testcases/cve/stack_clash.c
+++ b/testcases/cve/stack_clash.c
@@ -92,6 +92,7 @@ void segv_handler(int sig, siginfo_t *info, void *data LTP_ATTRIBUTE_UNUSED)
_exit(EXIT_SUCCESS);
}
+#ifdef __x86_64__
static void force_bottom_up(void)
{
FILE *fh;
@@ -134,6 +135,7 @@ static void force_bottom_up(void)
out:
SAFE_FCLOSE(fh);
}
+#endif
unsigned long read_stack_addr_from_proc(unsigned long *stack_size)
{
@@ -187,6 +189,7 @@ void __attribute__((noinline)) preallocate_stack(unsigned long required)
garbage[0] = garbage[required - 1] = '\0';
}
+#ifdef __x86_64__
static void do_mmap_placement_test(unsigned long stack_addr, unsigned long gap)
{
void *map_test_gap;
@@ -208,6 +211,7 @@ static void do_mmap_placement_test(unsigned long stack_addr, unsigned long gap)
SAFE_MUNMAP(map_test_gap, MAPPED_LEN);
}
}
+#endif
void do_child(void)
{
--
2.42.0
--
Mailing list info: https://lists.linux.it/listinfo/ltp
^ permalink raw reply related [flat|nested] 8+ messages in thread
* [LTP] [PATCH 2/2] stack_clash: Compile with -Wno-infinite-recursion
2023-10-24 8:49 [LTP] [PATCH 1/2] stack_clash: Guard functions used only in 64bit Petr Vorel
@ 2023-10-24 8:49 ` Petr Vorel
2023-10-25 9:30 ` Cyril Hrubis
2023-10-25 9:29 ` [LTP] [PATCH 1/2] stack_clash: Guard functions used only in 64bit Cyril Hrubis
1 sibling, 1 reply; 8+ messages in thread
From: Petr Vorel @ 2023-10-24 8:49 UTC (permalink / raw)
To: ltp; +Cc: Rick Edgecombe, Pavel Boldin
The algorithm is based on recursive calling of exhaust_stack_into_sigsegv(),
remove the warning.
Signed-off-by: Petr Vorel <pvorel@suse.cz>
---
testcases/cve/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/testcases/cve/Makefile b/testcases/cve/Makefile
index c5308794d..01b9b9ccb 100644
--- a/testcases/cve/Makefile
+++ b/testcases/cve/Makefile
@@ -7,7 +7,7 @@ include $(top_srcdir)/include/mk/testcases.mk
CFLAGS += -D_GNU_SOURCE
-stack_clash: CFLAGS += -fno-optimize-sibling-calls
+stack_clash: CFLAGS += -fno-optimize-sibling-calls -Wno-infinite-recursion
cve-2016-7042: LDLIBS += $(KEYUTILS_LIBS)
--
2.42.0
--
Mailing list info: https://lists.linux.it/listinfo/ltp
^ permalink raw reply related [flat|nested] 8+ messages in thread
* Re: [LTP] [PATCH 1/2] stack_clash: Guard functions used only in 64bit
2023-10-24 8:49 [LTP] [PATCH 1/2] stack_clash: Guard functions used only in 64bit Petr Vorel
2023-10-24 8:49 ` [LTP] [PATCH 2/2] stack_clash: Compile with -Wno-infinite-recursion Petr Vorel
@ 2023-10-25 9:29 ` Cyril Hrubis
2023-10-25 23:14 ` Petr Vorel
1 sibling, 1 reply; 8+ messages in thread
From: Cyril Hrubis @ 2023-10-25 9:29 UTC (permalink / raw)
To: Petr Vorel; +Cc: Rick Edgecombe, Pavel Boldin, ltp
Hi!
> To avoid "defined but not used" warnings when compiled on 32bit.
>
> Signed-off-by: Petr Vorel <pvorel@suse.cz>
> ---
> testcases/cve/stack_clash.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/testcases/cve/stack_clash.c b/testcases/cve/stack_clash.c
> index 3a99c49bb..56b970a1b 100644
> --- a/testcases/cve/stack_clash.c
> +++ b/testcases/cve/stack_clash.c
> @@ -92,6 +92,7 @@ void segv_handler(int sig, siginfo_t *info, void *data LTP_ATTRIBUTE_UNUSED)
> _exit(EXIT_SUCCESS);
> }
>
> +#ifdef __x86_64__
> static void force_bottom_up(void)
> {
> FILE *fh;
> @@ -134,6 +135,7 @@ static void force_bottom_up(void)
> out:
> SAFE_FCLOSE(fh);
> }
> +#endif
Maybe I'm blind but this function does not seem to be called from inside
of #ifdef __x86_64__.
> unsigned long read_stack_addr_from_proc(unsigned long *stack_size)
> {
> @@ -187,6 +189,7 @@ void __attribute__((noinline)) preallocate_stack(unsigned long required)
> garbage[0] = garbage[required - 1] = '\0';
> }
>
> +#ifdef __x86_64__
> static void do_mmap_placement_test(unsigned long stack_addr, unsigned long gap)
> {
> void *map_test_gap;
> @@ -208,6 +211,7 @@ static void do_mmap_placement_test(unsigned long stack_addr, unsigned long gap)
> SAFE_MUNMAP(map_test_gap, MAPPED_LEN);
> }
> }
> +#endif
This part looks good.
--
Cyril Hrubis
chrubis@suse.cz
--
Mailing list info: https://lists.linux.it/listinfo/ltp
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [LTP] [PATCH 2/2] stack_clash: Compile with -Wno-infinite-recursion
2023-10-24 8:49 ` [LTP] [PATCH 2/2] stack_clash: Compile with -Wno-infinite-recursion Petr Vorel
@ 2023-10-25 9:30 ` Cyril Hrubis
2023-10-25 23:15 ` Petr Vorel
0 siblings, 1 reply; 8+ messages in thread
From: Cyril Hrubis @ 2023-10-25 9:30 UTC (permalink / raw)
To: Petr Vorel; +Cc: Rick Edgecombe, Pavel Boldin, ltp
Hi!
Reviewed-by: Cyril Hrubis <chrubis@suse.cz>
--
Cyril Hrubis
chrubis@suse.cz
--
Mailing list info: https://lists.linux.it/listinfo/ltp
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [LTP] [PATCH 1/2] stack_clash: Guard functions used only in 64bit
2023-10-25 9:29 ` [LTP] [PATCH 1/2] stack_clash: Guard functions used only in 64bit Cyril Hrubis
@ 2023-10-25 23:14 ` Petr Vorel
2023-10-26 8:43 ` Cyril Hrubis
0 siblings, 1 reply; 8+ messages in thread
From: Petr Vorel @ 2023-10-25 23:14 UTC (permalink / raw)
To: Cyril Hrubis; +Cc: Rick Edgecombe, Pavel Boldin, ltp
Hi Cyril,
> Hi!
> > To avoid "defined but not used" warnings when compiled on 32bit.
> > Signed-off-by: Petr Vorel <pvorel@suse.cz>
> > ---
> > testcases/cve/stack_clash.c | 4 ++++
> > 1 file changed, 4 insertions(+)
> > diff --git a/testcases/cve/stack_clash.c b/testcases/cve/stack_clash.c
Hi Cyril,
> > +#ifdef __x86_64__
> > static void force_bottom_up(void)
> > {
> > FILE *fh;
> > @@ -134,6 +135,7 @@ static void force_bottom_up(void)
> > out:
> > SAFE_FCLOSE(fh);
> > }
> > +#endif
> Maybe I'm blind but this function does not seem to be called from inside
> of #ifdef __x86_64__.
force_bottom_up() is called only inside do_mmap_placement_test(), which is also
wrapped with #ifdef __x86_64_.
I did not notice that, compiler pointed it out :).
Can I merge with your RBT?
Kind regards,
Petr
--
Mailing list info: https://lists.linux.it/listinfo/ltp
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [LTP] [PATCH 2/2] stack_clash: Compile with -Wno-infinite-recursion
2023-10-25 9:30 ` Cyril Hrubis
@ 2023-10-25 23:15 ` Petr Vorel
0 siblings, 0 replies; 8+ messages in thread
From: Petr Vorel @ 2023-10-25 23:15 UTC (permalink / raw)
To: Cyril Hrubis; +Cc: Rick Edgecombe, Pavel Boldin, ltp
Hi Cyril,
thanks, merged!
Kind regards,
Petr
--
Mailing list info: https://lists.linux.it/listinfo/ltp
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [LTP] [PATCH 1/2] stack_clash: Guard functions used only in 64bit
2023-10-25 23:14 ` Petr Vorel
@ 2023-10-26 8:43 ` Cyril Hrubis
2023-10-26 9:37 ` Petr Vorel
0 siblings, 1 reply; 8+ messages in thread
From: Cyril Hrubis @ 2023-10-26 8:43 UTC (permalink / raw)
To: Petr Vorel; +Cc: Rick Edgecombe, Pavel Boldin, ltp
Hi!
> force_bottom_up() is called only inside do_mmap_placement_test(), which is also
> wrapped with #ifdef __x86_64_.
>
> I did not notice that, compiler pointed it out :).
Ah I was blind yesterday, sorry.
> Can I merge with your RBT?
Of course.
--
Cyril Hrubis
chrubis@suse.cz
--
Mailing list info: https://lists.linux.it/listinfo/ltp
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [LTP] [PATCH 1/2] stack_clash: Guard functions used only in 64bit
2023-10-26 8:43 ` Cyril Hrubis
@ 2023-10-26 9:37 ` Petr Vorel
0 siblings, 0 replies; 8+ messages in thread
From: Petr Vorel @ 2023-10-26 9:37 UTC (permalink / raw)
To: Cyril Hrubis; +Cc: Rick Edgecombe, Pavel Boldin, ltp
Hi Cyril,
> Hi!
> > force_bottom_up() is called only inside do_mmap_placement_test(), which is also
> > wrapped with #ifdef __x86_64_.
> > I did not notice that, compiler pointed it out :).
> Ah I was blind yesterday, sorry.
No problem, thanks for a review, merged.
Kind regards,
Petr
> > Can I merge with your RBT?
> Of course.
--
Mailing list info: https://lists.linux.it/listinfo/ltp
^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2023-10-26 9:37 UTC | newest]
Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2023-10-24 8:49 [LTP] [PATCH 1/2] stack_clash: Guard functions used only in 64bit Petr Vorel
2023-10-24 8:49 ` [LTP] [PATCH 2/2] stack_clash: Compile with -Wno-infinite-recursion Petr Vorel
2023-10-25 9:30 ` Cyril Hrubis
2023-10-25 23:15 ` Petr Vorel
2023-10-25 9:29 ` [LTP] [PATCH 1/2] stack_clash: Guard functions used only in 64bit Cyril Hrubis
2023-10-25 23:14 ` Petr Vorel
2023-10-26 8:43 ` Cyril Hrubis
2023-10-26 9:37 ` Petr Vorel
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