scsi: qla2xxx: Fix crashes in qla2x00_probe_one on probe failure

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commit 6a2cf8d366 upstream.

Because of the shifting around of code in qla2x00_probe_one recently,
failures during adapter initialization can lead to problems, i.e. NULL
pointer crashes and doubly freed data structures which cause eventual
panics.

This V2 version makes the relevant memory free routines idempotent, so
repeat calls won't cause any harm. I also removed the problematic
probe_init_failed exit point as it is not needed.

Fixes: d64d6c5671 ("scsi: qla2xxx: Fix NULL pointer crash due to probe failure")
Signed-off-by: Bill Kuzeja <william.kuzeja@stratus.com>
Acked-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Bill Kuzeja 2018-03-05 00:02:55 -05:00 • committed by Greg Kroah-Hartman

parent 91cb90636e

commit c209d68794

1 changed files with 37 additions and 22 deletions

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drivers/scsi/qla2xxx/qla_os.c

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