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| author | Cathy Avery <cathy.avery@oracle.com> | 2015-10-02 09:35:01 -0400 |
|---|---|---|
| committer | Moyster <oysterized@gmail.com> | 2016-08-26 20:46:28 +0200 |
| commit | 20ae8a422ecdaaea56eb21a0d3d92ed7c68b9063 (patch) | |
| tree | a381f2db5409ecb5ee770bc9b56ea064ef49d042 /kernel/module.c | |
| parent | 866281d7e09aceb325bdcc35ac887dcf809ecdbd (diff) | |
xen-blkfront: check for null drvdata in blkback_changed (XenbusStateClosing)
commit a54c8f0f2d7df525ff997e2afe71866a1a013064 upstream.
xen-blkfront will crash if the check to talk_to_blkback()
in blkback_changed()(XenbusStateInitWait) returns an error.
The driver data is freed and info is set to NULL. Later during
the close process via talk_to_blkback's call to xenbus_dev_fatal()
the null pointer is passed to and dereference in blkfront_closing.
Signed-off-by: Cathy Avery <cathy.avery@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Stefan Guendhoer <stefan@guendhoer.com>
Diffstat (limited to 'kernel/module.c')
0 files changed, 0 insertions, 0 deletions