On Wed, May 2, 2018 at 00:35 AM gregkh@linuxfoundation.org wrote:

This is a note to let you know that I've just added the patch titled

PCI: endpoint: Fix kernel panic after put_device()

to the 4.16-stable tree which can be found at:

http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: pci-endpoint-fix-kernel-panic-after-put_device.patch and it can be found in the queue-4.16 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

This patch is the 2nd one of a series of patches. If you want to add it to the stable tree without the first patch, you must add a

+ kfree(func_name);

before returning from the function.

The upstream commit of the first patch is 36cc14ac14c0d49d33820a82dab52a7edc802fef PCI: endpoint: Simplify name allocation for EPF device

Kind regards, Rolf

From foo@baz Tue May 1 14:59:17 PDT 2018 From: Rolf Evers-Fischer rolf.evers.fischer@aptiv.com Date: Wed, 28 Feb 2018 18:32:19 +0100 Subject: PCI: endpoint: Fix kernel panic after put_device()

From: Rolf Evers-Fischer rolf.evers.fischer@aptiv.com

[ Upstream commit 9eef6a5c3b0bf90eb292d462ea267bcb6ad1c334 ]

'put_device()' calls the relase function 'pci_epf_dev_release()', which already frees 'epf->name' and 'epf'.

Therefore we must not free them again after 'put_device()'.

Fixes: 5e8cb4033807 ("PCI: endpoint: Add EP core layer to enable EP controller and EP functions")

Signed-off-by: Rolf Evers-Fischer rolf.evers.fischer@aptiv.com Signed-off-by: Lorenzo Pieralisi lorenzo.pieralisi@arm.com Acked-by: Kishon Vijay Abraham I kishon@ti.com Reviewed-by: Andy Shevchenko andy.shevchenko@gmail.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

---

drivers/pci/endpoint/pci-epf-core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/pci/endpoint/pci-epf-core.c +++ b/drivers/pci/endpoint/pci-epf-core.c @@ -243,7 +243,7 @@ struct pci_epf *pci_epf_create(const cha

put_dev: put_device(dev);

•   kfree(epf->name);
  

•   return ERR_PTR(ret);
  

free_func_name: kfree(func_name);

Patches currently in stable-queue which might be from rolf.evers.fischer@aptiv.com are

queue-4.16/pci-endpoint-fix-kernel-panic-after-put_device.patch