linux-kernel - Re: [PATCH] PCI: fix memleak for pci dev removing during hotplug

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Message-ID: <20120223121002.0572b9db@jbarnes-desktop>
Date:	Thu, 23 Feb 2012 12:10:02 -0800
From:	Jesse Barnes <jbarnes@...tuousgeek.org>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] PCI: fix memleak for pci dev removing during hotplug

On Sat, 11 Feb 2012 00:18:30 -0800
Yinghai Lu <yinghai@...nel.org> wrote:

> unreferenced object 0xffff880276d17700 (size 64):
>   comm "swapper/0", pid 1, jiffies 4294897182 (age 3976.028s)
>   hex dump (first 32 bytes):
>     00 00 00 00 00 00 00 00 18 f9 de 76 02 88 ff ff  ...........v....
>     10 00 00 00 0e 00 00 00 0f 28 40 00 00 00 00 00  .........(@.....
>   backtrace:
>     [<ffffffff81c8aede>] kmemleak_alloc+0x26/0x43
>     [<ffffffff811385f0>] __kmalloc+0x121/0x183
>     [<ffffffff813cf821>] pci_add_cap_save_buffer+0x35/0x7c
>     [<ffffffff813d12b7>] pci_allocate_cap_save_buffers+0x1d/0x65
>     [<ffffffff813cdb52>] pci_device_add+0x92/0xf1
>     [<ffffffff81c8afe6>] pci_scan_single_device+0x9f/0xa1
>     [<ffffffff813cdbd2>] pci_scan_slot.part.20+0x21/0x106
>     [<ffffffff813cdce2>] pci_scan_slot+0x2b/0x35
>     [<ffffffff81c8dae4>] __pci_scan_child_bus+0x51/0x107
>     [<ffffffff81c8d75b>] pci_scan_bridge+0x376/0x6ae
>     [<ffffffff81c8db60>] __pci_scan_child_bus+0xcd/0x107
>     [<ffffffff81c8dbab>] pci_scan_child_bus+0x11/0x2a
>     [<ffffffff81cca58c>] pci_acpi_scan_root+0x18b/0x21c
>     [<ffffffff81c916be>] acpi_pci_root_add+0x1e1/0x42a
>     [<ffffffff81406210>] acpi_device_probe+0x50/0x190
>     [<ffffffff814a0227>] really_probe+0x99/0x126
> 
> Need to free saved_buffer for capabilities.
> 
> Signed-off-by: Yinghai Lu <yinghai@...nel.org>

Applied to linux-next, thanks.

-- 
Jesse Barnes, Intel Open Source Technology Center

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