misc: ibmvsm: Fix potential NULL pointer dereference

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commit e25df7812c upstream.

There is a potential NULL pointer dereference in case kzalloc()
fails and returns NULL.

Fix this by adding a NULL check on *session*

Also, update the function header with information about the
expected return on failure and remove unnecessary variable rc.

This issue was detected with the help of Coccinelle.

Fixes: 0eca353e7a ("misc: IBM Virtual Management Channel Driver (VMC)")
Cc: stable@vger.kernel.org
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Gustavo A. R. Silva 2019-01-16 10:46:16 -06:00 • committed by Greg Kroah-Hartman

parent ae10857955

commit 1fa50a998f

1 changed files with 5 additions and 2 deletions

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drivers/misc/ibmvmc.c

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