From: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
To: Gavin Shan <gwshan@linux.vnet.ibm.com>, linuxppc-dev@lists.ozlabs.org
Cc: bhelgaas@google.com, linux-pci@vger.kernel.org,
"# v4 . 8+" <stable@vger.kernel.org>
Subject: Re: [PATCH 1/3] pci/hotplug/pnv-php: Remove WARN_ON() in pnv_php_put_slot()
Date: Thu, 16 Feb 2017 15:46:20 +1100 [thread overview]
Message-ID: <6c4942ee-7704-5686-8bf3-3cff775eff89@au1.ibm.com> (raw)
In-Reply-To: <1487200954-14681-2-git-send-email-gwshan@linux.vnet.ibm.com>
On 16/02/17 10:22, Gavin Shan wrote:
> The WARN_ON() causes unnecessary backtrace when putting the parent
> slot, which is likely to be NULL.
>
> WARNING: CPU: 2 PID: 1071 at drivers/pci/hotplug/pnv_php.c:85 \
> pnv_php_release+0xcc/0x150 [pnv_php]
> :
> Call Trace:
> [c0000003bc007c10] [d00000000ad613c4] pnv_php_release+0x144/0x150 [pnv_php]
> [c0000003bc007c40] [c0000000006641d8] pci_hp_deregister+0x238/0x330
> [c0000003bc007cd0] [d00000000ad61440] pnv_php_unregister_one+0x70/0xa0 [pnv_php]
> [c0000003bc007d10] [d00000000ad614c0] pnv_php_unregister+0x50/0x80 [pnv_php]
> [c0000003bc007d40] [d00000000ad61e84] pnv_php_exit+0x50/0xcb4 [pnv_php]
> [c0000003bc007d70] [c00000000019499c] SyS_delete_module+0x1fc/0x2a0
> [c0000003bc007e30] [c00000000000b184] system_call+0x38/0xe0
>
> Cc: <stable@vger.kernel.org> # v4.8+
> Fixes: 66725152fb9f ("PCI/hotplug: PowerPC PowerNV PCI hotplug driver")
> Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Reviewed-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
--
Andrew Donnellan OzLabs, ADL Canberra
andrew.donnellan@au1.ibm.com IBM Australia Limited
next prev parent reply other threads:[~2017-02-16 4:47 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-15 23:22 [PATCH 0/3] pci/hotplug/pnv-php: More bug fixes Gavin Shan
2017-02-15 23:22 ` [PATCH 1/3] pci/hotplug/pnv-php: Remove WARN_ON() in pnv_php_put_slot() Gavin Shan
2017-02-16 4:46 ` Andrew Donnellan [this message]
2017-02-16 6:10 ` Vaibhav Jain
2017-02-19 11:33 ` [1/3] " Michael Ellerman
2017-02-15 23:22 ` [PATCH 2/3] pci/hotplug/pnv-php: Disable surprise hotplug capability on conflicts Gavin Shan
2017-02-16 4:31 ` Andrew Donnellan
2017-02-16 5:50 ` Gavin Shan
2017-02-16 6:11 ` Vaibhav Jain
2017-02-15 23:22 ` [PATCH 3/3] pci/hotplug/pnv-php: Disable MSI and PCI device properly Gavin Shan
2017-02-16 4:45 ` Andrew Donnellan
2017-02-16 14:09 ` [PATCH 0/3] pci/hotplug/pnv-php: More bug fixes Bjorn Helgaas
2017-02-16 22:38 ` Gavin Shan
2017-02-16 23:28 ` Bjorn Helgaas
2017-02-16 23:39 ` Gavin Shan
2017-02-17 11:13 ` Michael Ellerman
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