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Dan Carpenter 432798195b uio: Fix an Oops on load 
I was trying to solve a double free but I introduced a more serious
NULL dereference bug.  The problem is that if there is an IRQ which
triggers immediately, then we need "info->uio_dev" but it's not set yet.

This patch puts the original initialization back to how it was and just
sets info->uio_dev to NULL on the error path so it should solve both
the Oops and the double free.

Fixes: f019f07ecf ("uio: potential double frees if __uio_register_device() fails")
Reported-by: Mathias Thore <Mathias.Thore@infinera.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: stable <stable@vger.kernel.org>
Tested-by: Mathias Thore <Mathias.Thore@infinera.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2018-11-11 09:21:46 -08:00
..
Kconfig uio-hv-generic: new userspace i/o driver for VMBus 2016-12-06 11:52:49 +01:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
uio.c uio: Fix an Oops on load 2018-11-11 09:21:46 -08:00
uio_aec.c uio: uio_aec: remove unnecessary pci_set_drvdata() 2013-09-26 08:47:25 -07:00
uio_cif.c uio: add SPDX license tags 2018-07-21 15:41:20 +02:00
uio_dmem_genirq.c uio: Convert a few more users to using %pOFn instead of device_node.name 2018-10-02 15:59:29 -07:00
uio_fsl_elbc_gpcm.c uio: Convert to using %pOFn instead of device_node.name 2018-09-12 09:46:46 +02:00
uio_hv_generic.c uio_hv_generic: defer opening vmbus until first use 2018-09-25 20:33:24 +02:00
uio_mf624.c uio_mf624: Align memory regions to page size and set correct offsets 2017-04-08 18:13:28 +02:00
uio_netx.c uio: add SPDX license tags 2018-07-21 15:41:20 +02:00
uio_pci_generic.c uio: add SPDX license tags 2018-07-21 15:41:20 +02:00
uio_pdrv_genirq.c uio: Convert a few more users to using %pOFn instead of device_node.name 2018-10-02 15:59:29 -07:00
uio_pruss.c uio: pruss: fix error handling in probe 2018-08-02 10:14:26 +02:00
uio_sercos3.c uio: add SPDX license tags 2018-07-21 15:41:20 +02:00