A potential data race in drivers/isdn/hardware/eicon/diva_mnt.ko

From	Pavel Andrianov <andrianov@ispras.ru>
Newsgroups	linux.kernel
Subject	A potential data race in drivers/isdn/hardware/eicon/diva_mnt.ko
Date	2016-08-15 16:10 +0200
Message-ID	<s6qKt-6Bj-13@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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Hi!

There is a potential data race in drivers/isdn/hardware/eicon/diva_mnt.ko

In diva_maint_init there is an initialization of spinlocks (debug.c: 
lines 245, 252) and a queue (debug.c: line 237). These objects are used 
in handlers of divas_main_fops, for instance, divas_maint_read. These 
ops are registered in divas_maint_register_chrdev, which is called 
(divamnt.c: line 206) before initialization (divamnt.c: line 211). Thus, 
there may occur a situation when the handlers of divas_main_fops occur 
to uninitialized resources.

-- 
Pavel Andrianov
Linux Verification Center, ISPRAS
web: http://linuxtesting.org
e-mail: andrianov@ispras.ru

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A potential data race in drivers/isdn/hardware/eicon/diva_mnt.ko Pavel Andrianov <andrianov@ispras.ru> - 2016-08-15 16:10 +0200

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