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| author | Jeff Garzik <jgarzik@pobox.com> | 2005-05-26 21:54:27 -0400 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@pobox.com> | 2005-05-26 21:54:27 -0400 |
| commit | aa8f0dc6c3dbf1cf3ff58f3e945c981be134814d (patch) | |
| tree | 3e343cd5493d442d1a26dc7a421422d84698831e /drivers/scsi/sata_nv.c | |
| parent | bef9c558841604116704e10b3d9ff3dbf4939423 (diff) | |
| download | kernel-crypto-aa8f0dc6c3dbf1cf3ff58f3e945c981be134814d.tar.gz kernel-crypto-aa8f0dc6c3dbf1cf3ff58f3e945c981be134814d.tar.xz kernel-crypto-aa8f0dc6c3dbf1cf3ff58f3e945c981be134814d.zip | |
libata: Fix use-after-iounmap
Jens Axboe pointed out that the iounmap() call in libata was occurring
too early, and some drivers (ahci, probably others) were using ioremap'd
memory after it had been unmapped.
The patch should address that problem by way of improving the libata
driver API:
* move ->host_stop() call after all ->port_stop() calls have occurred.
* create default helper function ata_host_stop(), and move iounmap()
call there.
* add ->host_stop_prewalk() hook, use it in sata_qstor.c (hi Mark).
sata_qstor appears to require the host-stop-before-port-stop ordering
that existed prior to applying the attached patch.
Diffstat (limited to 'drivers/scsi/sata_nv.c')
| -rw-r--r-- | drivers/scsi/sata_nv.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/scsi/sata_nv.c b/drivers/scsi/sata_nv.c index 69009f853a4..b0403ccd8a2 100644 --- a/drivers/scsi/sata_nv.c +++ b/drivers/scsi/sata_nv.c @@ -329,6 +329,8 @@ static void nv_host_stop (struct ata_host_set *host_set) host->host_desc->disable_hotplug(host_set); kfree(host); + + ata_host_stop(host_set); } static int nv_init_one (struct pci_dev *pdev, const struct pci_device_id *ent) |