Date: Sat, 28 Apr 2001 11:47:11 +1000 From: Michael Samuel <michael@miknet.net> To: freebsd-scsi@freebsd.org Subject: NULL pointer deref in scsi_sense_desc Message-ID: <20010428114711.A7571@miknet.net>
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Hi,
I got a "Page fault in kernel mode" which writing to a SCSI tape (which had
barfed on me with some SCSI sense messages shortly before the crash).
This is in -current from the CVS as of about a week or 2 ago.
It stopped at scsi_sense_desc+0x2f, which resolved in gdb -k to
cam/scsi/scsi_all.c line 1573, which in my copy of the source tree looks
like this:
void
scsi_sense_desc(int sense_key, int asc, int ascq,
struct scsi_inquiry_data *inq_data,
const char **sense_key_desc, const char **asc_desc)
{
const struct asc_table_entry *asc_entry;
const struct sense_key_table_entry *sense_entry;
fetchtableentries(sense_key, asc, ascq,
inq_data,
&sense_entry,
&asc_entry);
*sense_key_desc = sense_entry->desc;
It seems as though sense_entry is NULL after fetchtableentries() returns,
which when I took a quick peek at fetchtableentries(), it indicates that it
couldn't find a match.
I'm not subscribed to this list, but if you need more info, feel free to
send me an email directly (or Cc me in your follow-ups).
--
Michael Samuel <michael@miknet.net>
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