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 <[email protected]>
---
drivers/pci/pci.c | 9 +++++++++
drivers/pci/pci.h | 1 +
drivers/pci/probe.c | 1 +
3 files changed, 11 insertions(+)
Index: linux-2.6/drivers/pci/probe.c
===================================================================
--- linux-2.6.orig/drivers/pci/probe.c
+++ linux-2.6/drivers/pci/probe.c
@@ -1225,6 +1225,7 @@ static void pci_release_capabilities(str
{
pci_vpd_release(dev);
pci_iov_release(dev);
+ pci_free_cap_save_buffers(dev);
}
/**
Index: linux-2.6/drivers/pci/pci.c
===================================================================
--- linux-2.6.orig/drivers/pci/pci.c
+++ linux-2.6/drivers/pci/pci.c
@@ -1916,6 +1916,15 @@ void pci_allocate_cap_save_buffers(struc
"unable to preallocate PCI-X save buffer\n");
}
+void pci_free_cap_save_buffers(struct pci_dev *dev)
+{
+ struct pci_cap_saved_state *tmp;
+ struct hlist_node *pos, *n;
+
+ hlist_for_each_entry_safe(tmp, pos, n, &dev->saved_cap_space, next)
+ kfree(tmp);
+}
+
/**
* pci_enable_ari - enable ARI forwarding if hardware support it
* @dev: the PCI device
Index: linux-2.6/drivers/pci/pci.h
===================================================================
--- linux-2.6.orig/drivers/pci/pci.h
+++ linux-2.6/drivers/pci/pci.h
@@ -73,6 +73,7 @@ extern int __pci_pme_wakeup(struct pci_d
extern void pci_pm_init(struct pci_dev *dev);
extern void platform_pci_wakeup_init(struct pci_dev *dev);
extern void pci_allocate_cap_save_buffers(struct pci_dev *dev);
+void pci_free_cap_save_buffers(struct pci_dev *dev);
static inline void pci_wakeup_event(struct pci_dev *dev)
{
On Sat, 11 Feb 2012 00:18:30 -0800
Yinghai Lu <[email protected]> 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 <[email protected]>
Applied to linux-next, thanks.
--
Jesse Barnes, Intel Open Source Technology Center