powerpc/eeh: Null check uses of eeh_pe_bus_get

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commit 04fec21c06 upstream.

eeh_pe_bus_get() can return NULL if a PCI bus isn't found for a given PE.
Some callers don't check this, and can cause a null pointer dereference
under certain circumstances.

Fix this by checking NULL everywhere eeh_pe_bus_get() is called.

Fixes: 8a6b1bc70d ("powerpc/eeh: EEH core to handle special event")
Signed-off-by: Russell Currey <ruscur@russell.cc>
Reviewed-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

...

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Russell Currey 2016-09-12 14:17:22 +10:00 • committed by Ben Hutchings

parent 1caebfb554

commit 89b1e6c4a5

2 changed files with 13 additions and 0 deletions

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8

arch/powerpc/kernel/eeh_driver.c

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5

arch/powerpc/platforms/powernv/eeh-ioda.c

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