From: utzoo!decvax!cca!v.wales@Ucla-Security@sri-unix
Newsgroups: net.unix-wizards
Title: I/O Error in Push
Article-I.D.: sri-unix.4006
Posted: Fri Nov 12 01:50:13 1982
Received: Mon Nov 15 01:55:12 1982

From: v.wales at Ucla-Security (Rich Wales)
Date: 2 November 1982 2100-PST (Tuesday)
I can recall having seen that same panic error at least once or
twice, without any corresponding hardware errors.  One possible
candidate could be the test in "swstrategy" (in "sw.c") which
sets B_ERROR if there are problems with the block number or byte
count of a "struct buf" for swap space.  Of course, these should
never become invalid, but . . . .

A more thorough perusal of the code might show other places where
this panic could happen without a hardware problem on the disk.

-- Rich Wales (Wales at UCLA-Security)