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* [PATCH] drm/i915/selftest: Fix use of err in igt_reset_{fail,nop}_engine()
@ 2021-08-13 17:11 Nathan Chancellor
  2021-08-23 19:08 ` [Intel-gfx] [PATCH] drm/i915/selftest: Fix use of err in igt_reset_{fail, nop}_engine() Nathan Chancellor
  0 siblings, 1 reply; 3+ messages in thread
From: Nathan Chancellor @ 2021-08-13 17:11 UTC (permalink / raw)
  To: Jani Nikula, Joonas Lahtinen, Rodrigo Vivi
  Cc: John Harrison, Matthew Brost, intel-gfx, dri-devel, linux-kernel,
	clang-built-linux, kernel-janitors, Nathan Chancellor,
	Dan Carpenter

Clang warns:

In file included from drivers/gpu/drm/i915/gt/intel_reset.c:1514:
drivers/gpu/drm/i915/gt/selftest_hangcheck.c:465:62: warning: variable
'err' is uninitialized when used here [-Wuninitialized]
        pr_err("[%s] Create context failed: %d!\n", engine->name, err);
                                                                  ^~~
...
drivers/gpu/drm/i915/gt/selftest_hangcheck.c:580:62: warning: variable
'err' is uninitialized when used here [-Wuninitialized]
        pr_err("[%s] Create context failed: %d!\n", engine->name, err);
                                                                  ^~~
...
2 warnings generated.

This appears to be a copy and paste issue. Use ce directly using the %pe
specifier to pretty print the error code so that err is not used
uninitialized in these functions.

Fixes: 3a7b72665ea5 ("drm/i915/selftest: Bump selftest timeouts for hangcheck")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
---
 drivers/gpu/drm/i915/gt/selftest_hangcheck.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/selftest_hangcheck.c b/drivers/gpu/drm/i915/gt/selftest_hangcheck.c
index 08f011f893b2..2c1ed32ca5ac 100644
--- a/drivers/gpu/drm/i915/gt/selftest_hangcheck.c
+++ b/drivers/gpu/drm/i915/gt/selftest_hangcheck.c
@@ -462,7 +462,7 @@ static int igt_reset_nop_engine(void *arg)
 
 		ce = intel_context_create(engine);
 		if (IS_ERR(ce)) {
-			pr_err("[%s] Create context failed: %d!\n", engine->name, err);
+			pr_err("[%s] Create context failed: %pe!\n", engine->name, ce);
 			return PTR_ERR(ce);
 		}
 
@@ -577,7 +577,7 @@ static int igt_reset_fail_engine(void *arg)
 
 		ce = intel_context_create(engine);
 		if (IS_ERR(ce)) {
-			pr_err("[%s] Create context failed: %d!\n", engine->name, err);
+			pr_err("[%s] Create context failed: %pe!\n", engine->name, ce);
 			return PTR_ERR(ce);
 		}
 

base-commit: 927dfdd09d8c03ba100ed0c8c3915f8e1d1f5556
-- 
2.33.0.rc2


^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: [Intel-gfx] [PATCH] drm/i915/selftest: Fix use of err in igt_reset_{fail, nop}_engine()
  2021-08-13 17:11 [PATCH] drm/i915/selftest: Fix use of err in igt_reset_{fail,nop}_engine() Nathan Chancellor
@ 2021-08-23 19:08 ` Nathan Chancellor
  2021-08-24  9:52   ` Joonas Lahtinen
  0 siblings, 1 reply; 3+ messages in thread
From: Nathan Chancellor @ 2021-08-23 19:08 UTC (permalink / raw)
  To: Jani Nikula, Joonas Lahtinen, Rodrigo Vivi
  Cc: John Harrison, Matthew Brost, intel-gfx, dri-devel, linux-kernel,
	clang-built-linux, kernel-janitors, Dan Carpenter

Ping? This is a pretty clear bug and it is not fixed in -next or
drm-intel at this point.

On Fri, Aug 13, 2021 at 10:11:58AM -0700, Nathan Chancellor wrote:
> Clang warns:
> 
> In file included from drivers/gpu/drm/i915/gt/intel_reset.c:1514:
> drivers/gpu/drm/i915/gt/selftest_hangcheck.c:465:62: warning: variable
> 'err' is uninitialized when used here [-Wuninitialized]
>         pr_err("[%s] Create context failed: %d!\n", engine->name, err);
>                                                                   ^~~
> ...
> drivers/gpu/drm/i915/gt/selftest_hangcheck.c:580:62: warning: variable
> 'err' is uninitialized when used here [-Wuninitialized]
>         pr_err("[%s] Create context failed: %d!\n", engine->name, err);
>                                                                   ^~~
> ...
> 2 warnings generated.
> 
> This appears to be a copy and paste issue. Use ce directly using the %pe
> specifier to pretty print the error code so that err is not used
> uninitialized in these functions.
> 
> Fixes: 3a7b72665ea5 ("drm/i915/selftest: Bump selftest timeouts for hangcheck")
> Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
> Signed-off-by: Nathan Chancellor <nathan@kernel.org>
> ---
>  drivers/gpu/drm/i915/gt/selftest_hangcheck.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/gt/selftest_hangcheck.c b/drivers/gpu/drm/i915/gt/selftest_hangcheck.c
> index 08f011f893b2..2c1ed32ca5ac 100644
> --- a/drivers/gpu/drm/i915/gt/selftest_hangcheck.c
> +++ b/drivers/gpu/drm/i915/gt/selftest_hangcheck.c
> @@ -462,7 +462,7 @@ static int igt_reset_nop_engine(void *arg)
>  
>  		ce = intel_context_create(engine);
>  		if (IS_ERR(ce)) {
> -			pr_err("[%s] Create context failed: %d!\n", engine->name, err);
> +			pr_err("[%s] Create context failed: %pe!\n", engine->name, ce);
>  			return PTR_ERR(ce);
>  		}
>  
> @@ -577,7 +577,7 @@ static int igt_reset_fail_engine(void *arg)
>  
>  		ce = intel_context_create(engine);
>  		if (IS_ERR(ce)) {
> -			pr_err("[%s] Create context failed: %d!\n", engine->name, err);
> +			pr_err("[%s] Create context failed: %pe!\n", engine->name, ce);
>  			return PTR_ERR(ce);
>  		}
>  
> 
> base-commit: 927dfdd09d8c03ba100ed0c8c3915f8e1d1f5556
> -- 
> 2.33.0.rc2

^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: [Intel-gfx] [PATCH] drm/i915/selftest: Fix use of err in igt_reset_{fail, nop}_engine()
  2021-08-23 19:08 ` [Intel-gfx] [PATCH] drm/i915/selftest: Fix use of err in igt_reset_{fail, nop}_engine() Nathan Chancellor
@ 2021-08-24  9:52   ` Joonas Lahtinen
  0 siblings, 0 replies; 3+ messages in thread
From: Joonas Lahtinen @ 2021-08-24  9:52 UTC (permalink / raw)
  To: Jani Nikula, Nathan Chancellor, Rodrigo Vivi
  Cc: John Harrison, Matthew Brost, intel-gfx, dri-devel, linux-kernel,
	clang-built-linux, kernel-janitors, Dan Carpenter

Quoting Nathan Chancellor (2021-08-23 22:08:37)
> Ping? This is a pretty clear bug and it is not fixed in -next or
> drm-intel at this point.

Pushed to drm-intel-gt-next with my R-b.

Regards, Joonas

> On Fri, Aug 13, 2021 at 10:11:58AM -0700, Nathan Chancellor wrote:
> > Clang warns:
> > 
> > In file included from drivers/gpu/drm/i915/gt/intel_reset.c:1514:
> > drivers/gpu/drm/i915/gt/selftest_hangcheck.c:465:62: warning: variable
> > 'err' is uninitialized when used here [-Wuninitialized]
> >         pr_err("[%s] Create context failed: %d!\n", engine->name, err);
> >                                                                   ^~~
> > ...
> > drivers/gpu/drm/i915/gt/selftest_hangcheck.c:580:62: warning: variable
> > 'err' is uninitialized when used here [-Wuninitialized]
> >         pr_err("[%s] Create context failed: %d!\n", engine->name, err);
> >                                                                   ^~~
> > ...
> > 2 warnings generated.
> > 
> > This appears to be a copy and paste issue. Use ce directly using the %pe
> > specifier to pretty print the error code so that err is not used
> > uninitialized in these functions.
> > 
> > Fixes: 3a7b72665ea5 ("drm/i915/selftest: Bump selftest timeouts for hangcheck")
> > Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
> > Signed-off-by: Nathan Chancellor <nathan@kernel.org>
> > ---
> >  drivers/gpu/drm/i915/gt/selftest_hangcheck.c | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> > 
> > diff --git a/drivers/gpu/drm/i915/gt/selftest_hangcheck.c b/drivers/gpu/drm/i915/gt/selftest_hangcheck.c
> > index 08f011f893b2..2c1ed32ca5ac 100644
> > --- a/drivers/gpu/drm/i915/gt/selftest_hangcheck.c
> > +++ b/drivers/gpu/drm/i915/gt/selftest_hangcheck.c
> > @@ -462,7 +462,7 @@ static int igt_reset_nop_engine(void *arg)
> >  
> >               ce = intel_context_create(engine);
> >               if (IS_ERR(ce)) {
> > -                     pr_err("[%s] Create context failed: %d!\n", engine->name, err);
> > +                     pr_err("[%s] Create context failed: %pe!\n", engine->name, ce);
> >                       return PTR_ERR(ce);
> >               }
> >  
> > @@ -577,7 +577,7 @@ static int igt_reset_fail_engine(void *arg)
> >  
> >               ce = intel_context_create(engine);
> >               if (IS_ERR(ce)) {
> > -                     pr_err("[%s] Create context failed: %d!\n", engine->name, err);
> > +                     pr_err("[%s] Create context failed: %pe!\n", engine->name, ce);
> >                       return PTR_ERR(ce);
> >               }
> >  
> > 
> > base-commit: 927dfdd09d8c03ba100ed0c8c3915f8e1d1f5556
> > -- 
> > 2.33.0.rc2

^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2021-08-24  9:52 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-08-13 17:11 [PATCH] drm/i915/selftest: Fix use of err in igt_reset_{fail,nop}_engine() Nathan Chancellor
2021-08-23 19:08 ` [Intel-gfx] [PATCH] drm/i915/selftest: Fix use of err in igt_reset_{fail, nop}_engine() Nathan Chancellor
2021-08-24  9:52   ` Joonas Lahtinen

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