Re: [PATCH 2/4] test: Don't skip tests if nfit modules are missing

["Verma, Vishal L" <vishal.l.verma@intel.com>]

On Sat, 2021-05-01 at 11:57 +0530, Santosh Sivaraj wrote:
> "Verma, Vishal L" <vishal.l.verma@intel.com> writes:
> 
> Hi Vishal,
> 
> > On Sun, 2021-03-28 at 07:39 +0530, Santosh Sivaraj wrote:
> > > For NFIT to be available ACPI is a must, so don't fail when nfit modules
> > > are missing on a platform that doesn't support ACPI.
> > > 
> > > Signed-off-by: Santosh Sivaraj <santosh@fossix.org>
> > > ---
> > >  test.h                        |  2 +-
> > >  test/ack-shutdown-count-set.c |  2 +-
> > >  test/blk_namespaces.c         |  2 +-
> > >  test/core.c                   | 30 ++++++++++++++++++++++++++++--
> > >  test/dpa-alloc.c              |  2 +-
> > >  test/dsm-fail.c               |  2 +-
> > >  test/libndctl.c               |  2 +-
> > >  test/multi-pmem.c             |  2 +-
> > >  test/parent-uuid.c            |  2 +-
> > >  test/pmem_namespaces.c        |  2 +-
> > >  10 files changed, 37 insertions(+), 11 deletions(-)
> > > 
> > 
> > I haven't looked deeper, but this seems to fail the blk-ns test with:
> > 
> >   ACPI.NFIT unavailable falling back to nfit_test
> >   test/init: ndctl_test_init: Cannot determine NVDIMM family
> >   __ndctl_test_skip: explicit skip test_blk_namespaces:235
> >   nfit_test unavailable skipping tests
> 
> The first message will be emitted even without the changes if the bus is not
> found. The second error will be emitted when check "/sys/bus/acpi" is not
> found. We fail for all other buses by default except for NFIT as before and PAPR
> tests are enabled only when NVDIMM_TEST_FAMILY is set to "PAPR".

See below on this.

> 
> All tests pass in my setup (x86_64 qemu guest) with the recent upstream kernel,
> except for the the below warning from drivers/acpi/nfit/core.c:

Hm I've not seen this with 5.11 or 5.12. What's the qemu command line
and is it just triggered from a unit test tun?

> 
> [ 2426.727584] ------------[ cut here ]------------
> [ 2426.728405] WARNING: CPU: 2 PID: 47504 at tools/testing/nvdimm/../../../drivers/acpi/nfit/core.c:3879 nfit_exit+0x]
> [ 2426.730264] Modules linked in: dax_pmem(O) nd_pmem(O) nfit(O-) kmem dax_pmem_compat(O) nd_blk(O) dax_pmem_core(O) ]
> [ 2426.733209] CPU: 2 PID: 47504 Comm: modprobe Tainted: G        W  O      5.12.0+ #3
> [ 2426.734472] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.o4
> [ 2426.736305] RIP: 0010:nfit_exit+0x2c/0x703 [nfit]
> [ 2426.737099] Code: fd ff ff 48 c7 c7 00 f0 39 c0 e8 52 a1 38 da 48 8b 3d 6b 46 00 00 e8 e6 88 ee d9 48 8b 05 5f 3c 0
> [ 2426.740046] RSP: 0018:ffffa8e800b77ed8 EFLAGS: 00010287
> [ 2426.740990] RAX: ffff95b7e51935b0 RBX: 0000000000000800 RCX: ffffffff9b4a36a8
> [ 2426.742236] RDX: 0000000000000000 RSI: 0000000000000083 RDI: ffff95b7c03e1554
> [ 2426.743404] RBP: ffffffffc039f740 R08: 0000000000000400 R09: ffff95b7c03e0e50
> [ 2426.744617] R10: ffff95b7fbd296f0 R11: 0000000000895440 R12: ffffa8e800b77f58
> [ 2426.745792] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
> [ 2426.746946] FS:  00007f48297e3740(0000) GS:ffff95b7fbd00000(0000) knlGS:0000000000000000
> [ 2426.748250] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 2426.749198] CR2: 000056072aadc9f8 CR3: 0000000118b08000 CR4: 00000000000006e0
> [ 2426.750349] Call Trace:
> [ 2426.750754]  __do_sys_delete_module+0x19d/0x240
> [ 2426.751472]  ? task_work_run+0x5c/0x90
> [ 2426.751964]  ? exit_to_user_mode_prepare+0x2a/0x130
> [ 2426.752637]  do_syscall_64+0x40/0x80
> [ 2426.753121]  entry_SYSCALL_64_after_hwframe+0x44/0xae
> [ 2426.753810] RIP: 0033:0x7f482991361b
> [ 2426.754274] Code: 73 01 c3 48 8b 0d 5d 18 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 8
> [ 2426.756668] RSP: 002b:00007ffd46c89b98 EFLAGS: 00000206 ORIG_RAX: 00000000000000b0
> [ 2426.757676] RAX: ffffffffffffffda RBX: 000056072aad8f90 RCX: 00007f482991361b
> [ 2426.758618] RDX: 0000000000000000 RSI: 0000000000000800 RDI: 000056072aad8ff8
> [ 2426.759563] RBP: 000056072aad8f90 R08: 0000000000000000 R09: 0000000000000000
> [ 2426.760513] R10: 00007f4829987ac0 R11: 0000000000000206 R12: 000056072aad8ff8
> [ 2426.761463] R13: 0000000000000000 R14: 000056072aadb4e8 R15: 00007ffd46c89d18
> [ 2426.762405] ---[ end trace 14a8748cda8b4777 ]---
> 
> This was not seen with the 5.11 kernel.
> 
> Thanks,
> Santosh
> > 
> > > diff --git a/test.h b/test.h
> > > index cba8d41..7de13fe 100644
> > > --- a/test.h
> > > +++ b/test.h
> > > @@ -20,7 +20,7 @@ void builtin_xaction_namespace_reset(void);
> > >  
> > > 
> > >  struct kmod_ctx;
> > >  struct kmod_module;
> > > -int nfit_test_init(struct kmod_ctx **ctx, struct kmod_module **mod,
> > > +int ndctl_test_init(struct kmod_ctx **ctx, struct kmod_module **mod,
> > >  		struct ndctl_ctx *nd_ctx, int log_level,
> > >  		struct ndctl_test *test);
> > >  
> > > 
> > > diff --git a/test/ack-shutdown-count-set.c b/test/ack-shutdown-count-set.c
> > > index fb1d82b..c561ff3 100644
> > > --- a/test/ack-shutdown-count-set.c
> > > +++ b/test/ack-shutdown-count-set.c
> > > @@ -99,7 +99,7 @@ static int test_ack_shutdown_count_set(int loglevel, struct ndctl_test *test,
> > >  	int result = EXIT_FAILURE, err;
> > >  
> > > 
> > >  	ndctl_set_log_priority(ctx, loglevel);
> > > -	err = nfit_test_init(&kmod_ctx, &mod, NULL, loglevel, test);
> > > +	err = ndctl_test_init(&kmod_ctx, &mod, NULL, loglevel, test);
> > >  	if (err < 0) {
> > >  		result = 77;
> > >  		ndctl_test_skip(test);
> > > diff --git a/test/blk_namespaces.c b/test/blk_namespaces.c
> > > index d7f00cb..f076e85 100644
> > > --- a/test/blk_namespaces.c
> > > +++ b/test/blk_namespaces.c
> > > @@ -228,7 +228,7 @@ int test_blk_namespaces(int log_level, struct ndctl_test *test,
> > >  
> > > 
> > >  	if (!bus) {
> > >  		fprintf(stderr, "ACPI.NFIT unavailable falling back to nfit_test\n");
> > > -		rc = nfit_test_init(&kmod_ctx, &mod, NULL, log_level, test);
> > > +		rc = ndctl_test_init(&kmod_ctx, &mod, NULL, log_level, test);
> > >  		ndctl_invalidate(ctx);
> > >  		bus = ndctl_bus_get_by_provider(ctx, "nfit_test.0");
> > >  		if (rc < 0 || !bus) {
> > > diff --git a/test/core.c b/test/core.c
> > > index cc7d8d9..44cb277 100644
> > > --- a/test/core.c
> > > +++ b/test/core.c
> > > @@ -11,6 +11,7 @@
> > >  #include <util/log.h>
> > >  #include <util/sysfs.h>
> > >  #include <ndctl/libndctl.h>
> > > +#include <ndctl/ndctl.h>
> > >  #include <ccan/array_size/array_size.h>
> > >  
> > > 
> > >  #define KVER_STRLEN 20
> > > @@ -106,11 +107,11 @@ int ndctl_test_get_skipped(struct ndctl_test *test)
> > >  	return test->skip;
> > >  }
> > >  
> > > 
> > > -int nfit_test_init(struct kmod_ctx **ctx, struct kmod_module **mod,
> > > +int ndctl_test_init(struct kmod_ctx **ctx, struct kmod_module **mod,
> > >  		struct ndctl_ctx *nd_ctx, int log_level,
> > >  		struct ndctl_test *test)
> > >  {
> > > -	int rc;
> > > +	int rc, family = -1;
> > >  	unsigned int i;
> > >  	const char *name;
> > >  	struct ndctl_bus *bus;
> > > @@ -127,10 +128,30 @@ int nfit_test_init(struct kmod_ctx **ctx, struct kmod_module **mod,
> > >  		"nd_e820",
> > >  		"nd_pmem",
> > >  	};
> > > +	char *test_env;
> > >  
> > > 
> > >  	log_init(&log_ctx, "test/init", "NDCTL_TEST");
> > >  	log_ctx.log_priority = log_level;
> > >  
> > > 
> > > +	/*
> > > +	 * The following two checks determine the platform family. For
> > > +	 * Intel/platforms which support ACPI, check sysfs; for other platforms
> > > +	 * determine from the environment variable NVDIMM_TEST_FAMILY
> > > +	 */
> > > +	if (access("/sys/bus/acpi", F_OK) == 0) {
> > > +		if (errno == ENOENT)
> > > +			family = NVDIMM_FAMILY_INTEL;
> > > +	}

Did you mean for the errno check to be if (errno != ENOENT) ?
This is what was causing the unit test failure for me. This patch on
top fixes it for me:

diff --git a/test/core.c b/test/core.c
index 44cb277..698bb66 100644
--- a/test/core.c
+++ b/test/core.c
@@ -139,7 +139,7 @@ int ndctl_test_init(struct kmod_ctx **ctx, struct
kmod_module **mod,
         * determine from the environment variable NVDIMM_TEST_FAMILY
         */
        if (access("/sys/bus/acpi", F_OK) == 0) {
-               if (errno == ENOENT)
+               if (errno != ENOENT)
                        family = NVDIMM_FAMILY_INTEL;
        }
 
If this looks okay do you want to send out a respin with this and I'll
pick it up.

Thanks,
-Vishal
> > 
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