cvs commit: src/sys/dev/ata ata-lowlevel.c
Matthew N. Dodd
mdodd at FreeBSD.org
Wed Mar 2 03:59:28 GMT 2005
mdodd 2005-03-02 03:59:28 UTC
FreeBSD src repository
Handle PIO timeouts in ata_end_transaction() by immediately returning.
Failure to do this will result in following ata_pio_read() calls walking
off the end of the read buffer.
This resolves the "memory modified after free" panics common with Thinkpads
and CD/DVD drives.
Submitted by: Nate Lawson <nate AT root.org>
Revision Changes Path
1.53 +3 -0 src/sys/dev/ata/ata-lowlevel.c
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