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(parent: 255364f) | patch
staging: comedi: addi_apci_3xxx: check return value
authorPan Bian <bianpan2016@163.com>
Sun, 23 Apr 2017 09:52:55 +0000 (17:52 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 25 Apr 2017 18:43:42 +0000 (20:43 +0200)
commita455178e59f2b3591840cc543cf637424bd572d7
tree97b057c33bfa5a55649a3c8400a0745318167b44tree | snapshot
parent255364f7b8a0fee3fb642b3e1521e943dd67bfb3commit | diff
staging: comedi: addi_apci_3xxx: check return value

Function pci_ioremap_bar() will return a NULL pointer if there is no
enough memory. However, in function apci3xxx_auto_attach(), the return
value of function pci_ioremap_bar() is not validated. This may result in
NULL dereference in following access to dev->mmio. This patch fixes the
bug.

Signed-off-by: Pan Bian <bianpan2016@163.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/staging/comedi/drivers/addi_apci_3xxx.c diff | blob | history
Domain: System / Kernel;