scsi: bfa: integer overflow in debugfs

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[ Upstream commit 3e35127565 ]

We could allocate less memory than intended because we do:

	bfad->regdata = kzalloc(len << 2, GFP_KERNEL);

The shift can overflow leading to a crash.  This is debugfs code so the
impact is very small.  I fixed the network version of this in March with
commit 13e2d5187f ("bna: integer overflow bug in debugfs").

Fixes: ab2a9ba189 ("[SCSI] bfa: add debugfs support")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Dan Carpenter 2017-10-04 10:50:37 +03:00 • committed by Greg Kroah-Hartman

parent dd2581c675

commit b197f67ccf

1 changed files with 3 additions and 2 deletions

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drivers/scsi/bfa/bfad_debugfs.c

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