diff mbox series

[v2,1/2] powerpc/pseries: Do not pass an error pointer to of_node_put() in pSeries_reconfig_add_node()

Message ID 8949eefb-30d3-3c51-4f03-4a3c6f1b15dc@web.de (mailing list archive)
State Superseded
Headers show
Series powerpc/pseries: Fixes for exception handling in pSeries_reconfig_add_node() | expand

Commit Message

Markus Elfring March 21, 2023, 10:33 a.m. UTC
Date: Tue, 21 Mar 2023 10:30:23 +0100

It can be determined in the implementation of the function
“pSeries_reconfig_add_node” that an error code would occasionally
be provided by a call of a function like pseries_of_derive_parent().
This error indication was passed to an of_node_put() call according to
an attempt for exception handling so far.

Thus fix the risk for undesirable software behaviour by using
an additional label for this error case.

Link: https://lists.ozlabs.org/pipermail/linuxppc-dev/2023-March/256025.html
Link: https://lore.kernel.org/lkml/87pm9377qt.fsf@linux.ibm.com/
Reported-by: Nathan Lynch <nathanl@linux.ibm.com>
Fixes: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ("Linux-2.6.12-rc2")
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
V2:
This update step was added according to another change request.

 arch/powerpc/platforms/pseries/reconfig.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--
2.40.0

Comments

Markus Elfring Oct. 3, 2024, 5:05 p.m. UTC | #1
> Date: Tue, 21 Mar 2023 10:30:23 +0100
>
> It can be determined in the implementation of the function
> “pSeries_reconfig_add_node” that an error code would occasionally
> be provided by a call of a function like pseries_of_derive_parent().
> This error indication was passed to an of_node_put() call according to
> an attempt for exception handling so far.
…

I was notified also about the following adjustment.

…
 * linuxppc-dev: [resent,v2,1/2] powerpc/pseries: Do not pass an error pointer to of_node_put() in pSeries_reconfig_add_node()
     - http://patchwork.ozlabs.org/project/linuxppc-dev/patch/f5ac19db-c7d5-9a94-aa37-9bb448fe665f@web.de/
     - for: Linux PPC development
    was: New
    now: Changes Requested
…

It seems that I can not see so far why this status update happened
for any reasons.
Will further clarifications become helpful here?

Regards,
Markus
Christophe Leroy Oct. 3, 2024, 9:01 p.m. UTC | #2
Le 03/10/2024 à 19:05, Markus Elfring a écrit :
>> Date: Tue, 21 Mar 2023 10:30:23 +0100
>>
>> It can be determined in the implementation of the function
>> “pSeries_reconfig_add_node” that an error code would occasionally
>> be provided by a call of a function like pseries_of_derive_parent().
>> This error indication was passed to an of_node_put() call according to
>> an attempt for exception handling so far.
> …
> 
> I was notified also about the following adjustment.
> 
> …
>   * linuxppc-dev: [resent,v2,1/2] powerpc/pseries: Do not pass an error pointer to of_node_put() in pSeries_reconfig_add_node()
>       - https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fpatchwork.ozlabs.org%2Fproject%2Flinuxppc-dev%2Fpatch%2Ff5ac19db-c7d5-9a94-aa37-9bb448fe665f%40web.de%2F&data=05%7C02%7Cchristophe.leroy%40csgroup.eu%7Cab19d1c85de343f5474908dce3cd8c02%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C638635719164841772%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=8b7APXbglDf13PvZ4nVh5Z92bEft2RBqU3LfKsUETOI%3D&reserved=0
>       - for: Linux PPC development
>      was: New
>      now: Changes Requested
> …
> 
> It seems that I can not see so far why this status update happened
> for any reasons.
> Will further clarifications become helpful here?

Sorry I forgot to send the email. It is the same kind of problem as the 
other series: Message IDs and/or In-Reply-To headers are messed up and 
b4 ends up applying an unrelated patch instead of applying the series as 
you can see below:

$ b4 shazam f5ac19db-c7d5-9a94-aa37-9bb448fe665f@web.de

Grabbing thread from 
lore.kernel.org/all/f5ac19db-c7d5-9a94-aa37-9bb448fe665f@web.de/t.mbox.gz
Checking for newer revisions
Grabbing search results from lore.kernel.org
Analyzing 128 messages in the thread
WARNING: duplicate messages found at index 1
    Subject 1: powerpc/pseries: Do not pass an error pointer to 
of_node_put() in pSeries_reconfig_add_node()
    Subject 2: powerpc/pseries: Do not pass an error pointer to 
of_node_put() in pSeries_reconfig_add_node()
   2 is not a reply... assume additional patch
WARNING: duplicate messages found at index 2
    Subject 1: powerpc/pseries: Fix exception handling in 
pSeries_reconfig_add_node()
    Subject 2: powerpc/pseries: Do not pass an error pointer to 
of_node_put() in pSeries_reconfig_add_node()
   2 is not a reply... assume additional patch
Assuming new revision: v3 ([PATCH] ipvs: Fix exception handling in two 
functions)
Assuming new revision: v4 ([PATCH] selftests: cgroup: Fix exception 
handling in test_memcg_oom_group_score_events())
Assuming new revision: v5 ([Nouveau] [PATCH] drm/nouveau: Add a jump 
label in nouveau_gem_ioctl_pushbuf())
Assuming new revision: v6 ([PATCH] mm/mempolicy: Fix exception handling 
in shared_policy_replace())
Assuming new revision: v7 ([PATCH] firmware: ti_sci: Fix exception 
handling in ti_sci_probe())
Assuming new revision: v8 ([PATCH] remoteproc: imx_dsp_rproc: Improve 
exception handling in imx_dsp_rproc_mbox_alloc())
Assuming new revision: v9 ([PATCH] spi: atmel: Improve exception 
handling in atmel_spi_configure_dma())
Assuming new revision: v10 ([cocci] [PATCH] btrfs: Fix exception 
handling in relocating_repair_kthread())
Assuming new revision: v11 ([cocci] [PATCH] ufs: Fix exception handling 
in ufs_fill_super())
Assuming new revision: v12 ([cocci] [PATCH] perf cputopo: Improve 
exception handling in build_cpu_topology())
Assuming new revision: v13 ([cocci] [PATCH] perf pmu: Improve exception 
handling in pmu_lookup())
Assuming new revision: v14 ([cocci] [PATCH] selftests/bpf: Improve 
exception handling in rbtree_add_and_remove())
Assuming new revision: v15 ([cocci] [PATCH resent] btrfs: Fix exception 
handling in relocating_repair_kthread())
Assuming new revision: v16 ([cocci] [PATCH resent] ufs: Fix exception 
handling in ufs_fill_super())
Assuming new revision: v17 ([cocci] [PATCH resent] perf cputopo: Improve 
exception handling in build_cpu_topology())
WARNING: duplicate messages found at index 1
    Subject 1: scsi: message: fusion: Return directly after input data 
validation failed in four functions
    Subject 2: powerpc/pseries: Fix exception handling in 
pSeries_reconfig_add_node()
   2 is a reply... replacing existing: powerpc/pseries: Fix exception 
handling in pSeries_reconfig_add_node()
WARNING: duplicate messages found at index 1
    Subject 1: md/raid1: Fix exception handling in setup_conf()
    Subject 2: scsi: message: fusion: Return directly after input data 
validation failed in four functions
   2 is not a reply... assume additional patch
WARNING: duplicate messages found at index 2
    Subject 1: md/raid10: Fix exception handling in setup_conf()
    Subject 2: scsi: message: fusion: Return directly after input data 
validation failed in four functions
   2 is not a reply... assume additional patch
WARNING: duplicate messages found at index 1
    Subject 1: irqchip/gic-v4: Fix exception handling in 
its_alloc_vcpu_irqs()
    Subject 2: md/raid1: Fix exception handling in setup_conf()
   2 is not a reply... assume additional patch
WARNING: duplicate messages found at index 2
    Subject 1: irqchip/gic-v4: Fix exception handling in 
its_alloc_vcpu_sgis()
    Subject 2: md/raid1: Fix exception handling in setup_conf()
   2 is not a reply... assume additional patch
WARNING: duplicate messages found at index 1
    Subject 1: powerpc/4xx: Fix exception handling in 
ppc4xx_pciex_port_setup_hose()
    Subject 2: powerpc/pseries: Do not pass an error pointer to 
of_node_put() in pSeries_reconfig_add_node()
   2 is not a reply... assume additional patch
WARNING: duplicate messages found at index 2
    Subject 1: powerpc/4xx: Fix exception handling in 
ppc4xx_probe_pcix_bridge()
    Subject 2: powerpc/pseries: Do not pass an error pointer to 
of_node_put() in pSeries_reconfig_add_node()
   2 is not a reply... assume additional patch
WARNING: duplicate messages found at index 3
    Subject 1: powerpc/4xx: Fix exception handling in 
ppc4xx_probe_pci_bridge()
    Subject 2: powerpc/pseries: Do not pass an error pointer to 
of_node_put() in pSeries_reconfig_add_node()
   2 is not a reply... assume additional patch
WARNING: duplicate messages found at index 4
    Subject 1: powerpc/4xx: Delete unnecessary variable initialisations 
in four functions
    Subject 2: powerpc/pseries: Do not pass an error pointer to 
of_node_put() in pSeries_reconfig_add_node()
   2 is not a reply... assume additional patch
WARNING: duplicate messages found at index 1
    Subject 1: selinux: Improve exception handling in security_get_bools()
    Subject 2: irqchip/gic-v4: Fix exception handling in 
its_alloc_vcpu_irqs()
   2 is not a reply... assume additional patch
WARNING: duplicate messages found at index 1
    Subject 1: selinux: Adjust implementation of security_get_bools()
    Subject 2: powerpc/4xx: Fix exception handling in 
ppc4xx_pciex_port_setup_hose()
   2 is not a reply... assume additional patch
WARNING: duplicate messages found at index 1
    Subject 1: IB/uverbs: Improve exception handling in create_qp()
    Subject 2: selinux: Improve exception handling in security_get_bools()
   2 is a reply... replacing existing: selinux: Improve exception 
handling in security_get_bools()
WARNING: duplicate messages found at index 2
    Subject 1: IB/uverbs: Delete a duplicate check in create_qp()
    Subject 2: irqchip/gic-v4: Fix exception handling in 
its_alloc_vcpu_irqs()
   2 is not a reply... assume additional patch
WARNING: duplicate messages found at index 1
    Subject 1: powerpc/4xx: Fix exception handling in 
ppc4xx_pciex_port_setup_hose()
    Subject 2: IB/uverbs: Improve exception handling in create_qp()
   2 is not a reply... assume additional patch
WARNING: duplicate messages found at index 2
    Subject 1: powerpc/4xx: Fix exception handling in 
ppc4xx_probe_pcix_bridge()
    Subject 2: IB/uverbs: Improve exception handling in create_qp()
   2 is not a reply... assume additional patch
WARNING: duplicate messages found at index 3
    Subject 1: powerpc/4xx: Fix exception handling in 
ppc4xx_probe_pci_bridge()
    Subject 2: IB/uverbs: Improve exception handling in create_qp()
   2 is not a reply... assume additional patch
WARNING: duplicate messages found at index 4
    Subject 1: powerpc/4xx: Delete unnecessary variable initialisations 
in four functions
    Subject 2: IB/uverbs: Improve exception handling in create_qp()
   2 is not a reply... assume additional patch
Looking for additional code-review trailers on lore.kernel.org
Will use the latest revision: v17
You can pick other revisions using the -vN flag
Checking attestation on all messages, may take a moment...
---
   ✗ [PATCH] perf cputopo: Improve exception handling in 
build_cpu_topology()
   ---
   ✗ BADSIG: DKIM/web.de
   ✓ Signed: DKIM/inria.fr (From: Markus.Elfring@web.de)
---
Total patches: 1
---
Application de  perf cputopo: Improve exception handling in 
build_cpu_topology()
Markus Elfring Oct. 4, 2024, 7:23 a.m. UTC | #3
>> I was notified also about the following adjustment.
>>
>> …
>>   * linuxppc-dev: [resent,v2,1/2] powerpc/pseries: Do not pass an error pointer to of_node_put() in pSeries_reconfig_add_node()
>>       - https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fpatchwork.ozlabs.org%2Fproject%2Flinuxppc-dev%2Fpatch%2Ff5ac19db-c7d5-9a94-aa37-9bb448fe665f%40web.de%2F&data=05%7C02%7Cchristophe.leroy%40csgroup.eu%7Cab19d1c85de343f5474908dce3cd8c02%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C638635719164841772%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=8b7APXbglDf13PvZ4nVh5Z92bEft2RBqU3LfKsUETOI%3D&reserved=0
>>       - for: Linux PPC development
>>      was: New
>>      now: Changes Requested
>> …
>>
>> It seems that I can not see so far why this status update happened
>> for any reasons.
>> Will further clarifications become helpful here?
>
> Sorry I forgot to send the email. It is the same kind of problem as the other series: Message IDs and/or In-Reply-To headers are messed up

Three mailing list archive interfaces can present a mostly consistent view for
the involved message threads, can't they?


> and b4 ends up applying an unrelated patch instead of applying the series as you can see below:
>
> $ b4 shazam f5ac19db-c7d5-9a94-aa37-9bb448fe665f@web.de
…

This development tool is also still evolving.
Are you looking for corresponding software extensions?
https://b4.docs.kernel.org/en/latest/#getting-help

How do you think about to start with the desired cover letter from the provided patch series
for another integration attempt?

Regards,
Markus
diff mbox series

Patch

diff --git a/arch/powerpc/platforms/pseries/reconfig.c b/arch/powerpc/platforms/pseries/reconfig.c
index 599bd2c78514..44f8ebc2ec0d 100644
--- a/arch/powerpc/platforms/pseries/reconfig.c
+++ b/arch/powerpc/platforms/pseries/reconfig.c
@@ -40,7 +40,7 @@  static int pSeries_reconfig_add_node(const char *path, struct property *proplist
     np->parent = pseries_of_derive_parent(path);
     if (IS_ERR(np->parent)) {
         err = PTR_ERR(np->parent);
-        goto out_err;
+        goto free_name;
     }
 
     err = of_attach_node(np);
@@ -56,6 +56,7 @@  static int pSeries_reconfig_add_node(const char *path, struct property *proplist
 out_err:
     if (np) {
         of_node_put(np->parent);
+free_name:
         kfree(np->full_name);
         kfree(np);
     }