* [PATCH] tracing: prevent PROFILE_ALL_BRANCHES when FORTIFY_SOURCE=y
@ 2018-01-15 19:07 Randy Dunlap
2018-01-15 19:10 ` Steven Rostedt
0 siblings, 1 reply; 4+ messages in thread
From: Randy Dunlap @ 2018-01-15 19:07 UTC (permalink / raw)
To: LKML, Steven Rostedt
From: Randy Dunlap <rdunlap@infradead.org>
I regularly get 50 MB - 60 MB files during kernel randconfig builds.
These large files mostly contain (many repeats of; e.g., 124,594):
In file included from ../include/linux/string.h:6:0,
from ../include/linux/uuid.h:20,
from ../include/linux/mod_devicetable.h:13,
from ../scripts/mod/devicetable-offsets.c:3:
../include/linux/compiler.h:64:4: warning: '______f' is static but declared in inline function 'strcpy' which is not static [enabled by default]
______f = { \
^
../include/linux/compiler.h:56:23: note: in expansion of macro '__trace_if'
^
../include/linux/string.h:425:2: note: in expansion of macro 'if'
if (p_size == (size_t)-1 && q_size == (size_t)-1)
^
This only happens when CONFIG_FORTIFY_SOURCE=y and
CONFIG_PROFILE_ALL_BRANCHES=y, so prevent PROFILE_ALL_BRANCHES if
FORTIFY_SOURCE=y.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
---
kernel/trace/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- orig/kernel/trace/Kconfig
+++ next/kernel/trace/Kconfig
@@ -355,7 +355,7 @@ config PROFILE_ANNOTATED_BRANCHES
on if you need to profile the system's use of these macros.
config PROFILE_ALL_BRANCHES
- bool "Profile all if conditionals"
+ bool "Profile all if conditionals" if !FORTIFY_SOURCE
select TRACE_BRANCH_PROFILING
help
This tracer profiles all branch conditions. Every if ()
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [PATCH] tracing: prevent PROFILE_ALL_BRANCHES when FORTIFY_SOURCE=y
2018-01-15 19:07 [PATCH] tracing: prevent PROFILE_ALL_BRANCHES when FORTIFY_SOURCE=y Randy Dunlap
@ 2018-01-15 19:10 ` Steven Rostedt
2018-01-15 19:12 ` Randy Dunlap
0 siblings, 1 reply; 4+ messages in thread
From: Steven Rostedt @ 2018-01-15 19:10 UTC (permalink / raw)
To: Randy Dunlap; +Cc: LKML
On Mon, 15 Jan 2018 11:07:27 -0800
Randy Dunlap <rdunlap@infradead.org> wrote:
> From: Randy Dunlap <rdunlap@infradead.org>
>
> I regularly get 50 MB - 60 MB files during kernel randconfig builds.
> These large files mostly contain (many repeats of; e.g., 124,594):
>
> In file included from ../include/linux/string.h:6:0,
> from ../include/linux/uuid.h:20,
> from ../include/linux/mod_devicetable.h:13,
> from ../scripts/mod/devicetable-offsets.c:3:
> ../include/linux/compiler.h:64:4: warning: '______f' is static but declared in inline function 'strcpy' which is not static [enabled by default]
> ______f = { \
> ^
> ../include/linux/compiler.h:56:23: note: in expansion of macro '__trace_if'
> ^
> ../include/linux/string.h:425:2: note: in expansion of macro 'if'
> if (p_size == (size_t)-1 && q_size == (size_t)-1)
> ^
>
> This only happens when CONFIG_FORTIFY_SOURCE=y and
> CONFIG_PROFILE_ALL_BRANCHES=y, so prevent PROFILE_ALL_BRANCHES if
> FORTIFY_SOURCE=y.
>
> Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
> Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
I'm actually working on a patch that I need to send to Linus before
4.15 is released. Want me to add this one too? Or do you have your own
branch to push to mainline with?
-- Steve
> ---
> kernel/trace/Kconfig | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> --- orig/kernel/trace/Kconfig
> +++ next/kernel/trace/Kconfig
> @@ -355,7 +355,7 @@ config PROFILE_ANNOTATED_BRANCHES
> on if you need to profile the system's use of these macros.
>
> config PROFILE_ALL_BRANCHES
> - bool "Profile all if conditionals"
> + bool "Profile all if conditionals" if !FORTIFY_SOURCE
> select TRACE_BRANCH_PROFILING
> help
> This tracer profiles all branch conditions. Every if ()
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [PATCH] tracing: prevent PROFILE_ALL_BRANCHES when FORTIFY_SOURCE=y
2018-01-15 19:10 ` Steven Rostedt
@ 2018-01-15 19:12 ` Randy Dunlap
2018-01-15 19:14 ` Steven Rostedt
0 siblings, 1 reply; 4+ messages in thread
From: Randy Dunlap @ 2018-01-15 19:12 UTC (permalink / raw)
To: Steven Rostedt; +Cc: LKML
On 01/15/2018 11:10 AM, Steven Rostedt wrote:
> On Mon, 15 Jan 2018 11:07:27 -0800
> Randy Dunlap <rdunlap@infradead.org> wrote:
>
>> From: Randy Dunlap <rdunlap@infradead.org>
>>
>> I regularly get 50 MB - 60 MB files during kernel randconfig builds.
>> These large files mostly contain (many repeats of; e.g., 124,594):
>>
>> In file included from ../include/linux/string.h:6:0,
>> from ../include/linux/uuid.h:20,
>> from ../include/linux/mod_devicetable.h:13,
>> from ../scripts/mod/devicetable-offsets.c:3:
>> ../include/linux/compiler.h:64:4: warning: '______f' is static but declared in inline function 'strcpy' which is not static [enabled by default]
>> ______f = { \
>> ^
>> ../include/linux/compiler.h:56:23: note: in expansion of macro '__trace_if'
>> ^
>> ../include/linux/string.h:425:2: note: in expansion of macro 'if'
>> if (p_size == (size_t)-1 && q_size == (size_t)-1)
>> ^
>>
>> This only happens when CONFIG_FORTIFY_SOURCE=y and
>> CONFIG_PROFILE_ALL_BRANCHES=y, so prevent PROFILE_ALL_BRANCHES if
>> FORTIFY_SOURCE=y.
>>
>> Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
>> Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
>
> I'm actually working on a patch that I need to send to Linus before
> 4.15 is released. Want me to add this one too? Or do you have your own
> branch to push to mainline with?
I don't have any branch to push. Please merge it whenever you think it's
appropriate.
Thanks.
> -- Steve
>
>> ---
>> kernel/trace/Kconfig | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> --- orig/kernel/trace/Kconfig
>> +++ next/kernel/trace/Kconfig
>> @@ -355,7 +355,7 @@ config PROFILE_ANNOTATED_BRANCHES
>> on if you need to profile the system's use of these macros.
>>
>> config PROFILE_ALL_BRANCHES
>> - bool "Profile all if conditionals"
>> + bool "Profile all if conditionals" if !FORTIFY_SOURCE
>> select TRACE_BRANCH_PROFILING
>> help
>> This tracer profiles all branch conditions. Every if ()
>
--
~Randy
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [PATCH] tracing: prevent PROFILE_ALL_BRANCHES when FORTIFY_SOURCE=y
2018-01-15 19:12 ` Randy Dunlap
@ 2018-01-15 19:14 ` Steven Rostedt
0 siblings, 0 replies; 4+ messages in thread
From: Steven Rostedt @ 2018-01-15 19:14 UTC (permalink / raw)
To: Randy Dunlap; +Cc: LKML
On Mon, 15 Jan 2018 11:12:46 -0800
Randy Dunlap <rdunlap@infradead.org> wrote:
> On 01/15/2018 11:10 AM, Steven Rostedt wrote:
> > On Mon, 15 Jan 2018 11:07:27 -0800
> > Randy Dunlap <rdunlap@infradead.org> wrote:
> >
> >> From: Randy Dunlap <rdunlap@infradead.org>
> >>
> >> I regularly get 50 MB - 60 MB files during kernel randconfig builds.
> >> These large files mostly contain (many repeats of; e.g., 124,594):
> >>
> >> In file included from ../include/linux/string.h:6:0,
> >> from ../include/linux/uuid.h:20,
> >> from ../include/linux/mod_devicetable.h:13,
> >> from ../scripts/mod/devicetable-offsets.c:3:
> >> ../include/linux/compiler.h:64:4: warning: '______f' is static but declared in inline function 'strcpy' which is not static [enabled by default]
> >> ______f = { \
> >> ^
> >> ../include/linux/compiler.h:56:23: note: in expansion of macro '__trace_if'
> >> ^
> >> ../include/linux/string.h:425:2: note: in expansion of macro 'if'
> >> if (p_size == (size_t)-1 && q_size == (size_t)-1)
> >> ^
> >>
> >> This only happens when CONFIG_FORTIFY_SOURCE=y and
> >> CONFIG_PROFILE_ALL_BRANCHES=y, so prevent PROFILE_ALL_BRANCHES if
> >> FORTIFY_SOURCE=y.
> >>
> >> Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
> >> Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
> >
> > I'm actually working on a patch that I need to send to Linus before
> > 4.15 is released. Want me to add this one too? Or do you have your own
> > branch to push to mainline with?
>
> I don't have any branch to push. Please merge it whenever you think it's
> appropriate.
>
I'll take it. Thanks,
-- Steve
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2018-01-15 19:14 UTC | newest]
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2018-01-15 19:07 [PATCH] tracing: prevent PROFILE_ALL_BRANCHES when FORTIFY_SOURCE=y Randy Dunlap
2018-01-15 19:10 ` Steven Rostedt
2018-01-15 19:12 ` Randy Dunlap
2018-01-15 19:14 ` Steven Rostedt
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