From: Thomas Gleixner <tglx@linutronix.de>
To: "Yun Wu (Abel)" <wuyun.wu@huawei.com>
Cc: Jiang Liu <jiang.liu@linux.intel.com>,
LKML <linux-kernel@vger.kernel.org>,
Bjorn Helgaas <bhelgaas@google.com>,
Grant Likely <grant.likely@linaro.org>,
Marc Zyngier <marc.zyngier@arm.com>,
Yingjoe Chen <yingjoe.chen@mediatek.com>,
Yijing Wang <wangyijing@huawei.com>
Subject: Re: [patch 09/16] genirq: Add generic msi irq domain support
Date: Tue, 18 Nov 2014 15:24:02 +0100 (CET) [thread overview]
Message-ID: <alpine.DEB.2.11.1411181520580.3909@nanos> (raw)
In-Reply-To: <546B4FC5.1050209@huawei.com>
On Tue, 18 Nov 2014, Yun Wu (Abel) wrote:
> On 2014/11/18 20:49, Jiang Liu wrote:
> >>> + ret = irq_domain_alloc_irqs_parent(domain, virq, nr_irqs, arg);
> >>> + if (ret < 0)
> >>> + return ret;
> >>> +
> >>> + for (i = 0; i < nr_irqs; i++) {
> >>> + ret = ops->msi_init(domain, info, virq + i, hwirq + i, arg);
> >>> + if (ret < 0) {
> >>> + if (ops->msi_free) {
> >>> + for (i--; i > 0; i--)
> >>
> >> while (i--) ?
The allocation for 'i' failed. So we don't free i. You missed the real
bug here:
> >>> + for (i--; i > 0; i--)
Must be i >= 0.
Thanks,
tglx
next prev parent reply other threads:[~2014-11-18 14:24 UTC|newest]
Thread overview: 94+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-12 13:42 [patch 00/16] genirq: Hierarchical irq domains and generic MSI interrupt code Thomas Gleixner
2014-11-12 13:42 ` [patch 01/16] irqdomain: Introduce new interfaces to support hierarchy irqdomains Thomas Gleixner
2014-11-18 9:24 ` Yun Wu (Abel)
2014-11-18 9:54 ` Thomas Gleixner
2014-11-18 11:48 ` Yun Wu (Abel)
2014-11-24 12:33 ` Yun Wu (Abel)
2014-11-24 13:13 ` Thomas Gleixner
2014-11-24 14:01 ` Yun Wu (Abel)
2014-11-24 14:11 ` Jiang Liu
2014-11-24 14:19 ` Yun Wu (Abel)
2014-11-24 14:33 ` Jiang Liu
2014-11-24 14:46 ` Yun Wu (Abel)
2014-11-24 14:32 ` Thomas Gleixner
2014-11-24 14:45 ` Yun Wu (Abel)
2014-11-12 13:42 ` [patch 02/16] irqdomain: Do irq_find_mapping and set_type for hierarchy irqdomain in case OF Thomas Gleixner
2014-11-12 13:42 ` [patch 03/16] genirq: Introduce helper functions to support stacked irq_chip Thomas Gleixner
2014-11-12 13:42 ` [patch 04/16] genirq: Introduce irq_chip.irq_compose_msi_msg() to support stacked irqchip Thomas Gleixner
2014-11-18 9:26 ` Yun Wu (Abel)
2014-11-18 10:02 ` Thomas Gleixner
2014-11-18 11:47 ` Yun Wu (Abel)
2014-11-18 12:43 ` Jiang Liu
2014-11-18 13:16 ` Yun Wu (Abel)
2014-11-18 13:25 ` Jiang Liu
2014-11-18 13:48 ` Yun Wu (Abel)
2014-11-18 13:55 ` Jiang Liu
2014-11-18 14:03 ` Yun Wu (Abel)
2014-11-18 14:06 ` Jiang Liu
2014-11-12 13:42 ` [patch 05/16] genirq: Add IRQ_SET_MASK_OK_DONE " Thomas Gleixner
2014-11-12 13:43 ` [patch 06/16] genirq: Split out flow handler typedefs into seperate header file Thomas Gleixner
2014-11-12 13:43 ` [patch 07/16] genirq: Introduce helper irq_domain_set_info() to reduce duplicated code Thomas Gleixner
2014-11-13 9:57 ` Yingjoe Chen
2014-11-13 10:00 ` Jiang Liu
2014-11-13 10:48 ` Marc Zyngier
2014-11-14 15:31 ` Marc Zyngier
2014-11-14 15:41 ` Jiang Liu
2014-11-14 17:35 ` Marc Zyngier
2014-11-15 1:26 ` Jiang Liu
2014-11-18 9:26 ` Yun Wu (Abel)
2014-11-18 10:03 ` Thomas Gleixner
2014-11-18 11:47 ` Yun Wu (Abel)
2014-11-18 12:38 ` Jiang Liu
2014-11-18 13:28 ` Yun Wu (Abel)
2014-11-18 13:37 ` Jiang Liu
2014-11-12 13:43 ` [patch 08/16] genirq: Introduce callback irq_chip.irq_write_msi_msg Thomas Gleixner
2014-11-18 9:26 ` Yun Wu (Abel)
2014-11-18 10:19 ` Thomas Gleixner
2014-11-18 13:33 ` Yun Wu (Abel)
2014-11-18 13:43 ` Jiang Liu
2014-11-18 13:52 ` Yun Wu (Abel)
2014-11-18 14:03 ` Jiang Liu
2014-11-18 14:15 ` Jiang Liu
2014-11-18 14:22 ` Yun Wu (Abel)
2014-11-18 14:29 ` Jiang Liu
2014-11-18 14:46 ` Yun Wu (Abel)
2014-11-18 17:14 ` Marc Zyngier
2014-11-19 3:38 ` Yun Wu (Abel)
2014-11-19 8:55 ` Marc Zyngier
2014-11-18 14:32 ` Thomas Gleixner
2014-11-19 6:57 ` Yun Wu (Abel)
2014-11-19 8:02 ` Jiang Liu
2014-11-19 9:20 ` Marc Zyngier
2014-12-10 9:26 ` Yun Wu (Abel)
2014-11-18 14:19 ` Thomas Gleixner
2014-11-18 14:34 ` Yun Wu (Abel)
2014-11-18 14:52 ` Jiang Liu
2014-11-19 3:47 ` Yun Wu (Abel)
2014-11-19 11:09 ` Thomas Gleixner
2014-11-18 17:21 ` Marc Zyngier
2014-11-19 3:40 ` Yun Wu (Abel)
2014-11-19 11:11 ` Thomas Gleixner
2014-12-10 9:11 ` Yun Wu (Abel)
2014-12-10 10:25 ` Thomas Gleixner
2014-12-11 3:01 ` Yun Wu (Abel)
2014-11-18 13:51 ` Jiang Liu
2014-11-12 13:43 ` [patch 09/16] genirq: Add generic msi irq domain support Thomas Gleixner
2014-11-18 12:07 ` Yun Wu (Abel)
2014-11-18 12:49 ` Jiang Liu
2014-11-18 13:55 ` Yun Wu (Abel)
2014-11-18 14:24 ` Thomas Gleixner [this message]
2014-11-18 14:39 ` Yun Wu (Abel)
2014-11-20 2:29 ` Jiang Liu
2014-11-12 13:43 ` [patch 10/16] PCI/MSI: Move cached entry functions to irq core Thomas Gleixner
2014-11-12 13:43 ` [patch 11/16] PCI/MSI: Remove unnecessary braces around single statements Thomas Gleixner
2014-11-12 13:43 ` [patch 12/16] PCI/MSI: Simplify PCI MSI code by initializing msi_desc.nvec_used earlier Thomas Gleixner
2014-11-12 13:43 ` [patch 13/16] PCI/MSI: Kill redundant call of irq_set_msi_desc() for MSI-X interrupts Thomas Gleixner
2014-11-12 13:43 ` [patch 14/16] PCI/MSI: Rename __read_msi_msg() to __pci_read_msi_msg() Thomas Gleixner
2014-11-12 13:43 ` [patch 15/16] PCI/MSI: Rename write_msi_msg() to pci_write_msi_msg() Thomas Gleixner
2014-11-12 16:50 ` Jiang Liu
2014-11-12 13:43 ` [patch 16/16] PCI/MSI: Enhance core to support hierarchy irqdomain Thomas Gleixner
2014-11-12 15:29 ` Marc Zyngier
2014-11-12 16:43 ` Thomas Gleixner
2014-11-12 14:13 ` [patch 00/16] genirq: Hierarchical irq domains and generic MSI interrupt code Yingjoe Chen
2014-11-12 14:48 ` Thomas Gleixner
2014-11-18 9:24 ` Yun Wu (Abel)
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