[S390] monreader: fix use after free bug with suspend/resume

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The monreader device driver doesn't set dev->driver_data to NULL after
freeing the corresponding data structure. This leads to a use after
free bug in the freeze/thaw suspend/resume functions after the device
has been opened and closed once. Fix this by clearing dev->driver_data
in the close() function.

Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

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Gerald Schaefer 2009-11-13 15:43:51 +01:00 • committed by Martin Schwidefsky

parent 156171c71a

commit ccaf655396

1 changed files with 1 additions and 0 deletions

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drivers/s390/char/monreader.c

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