Re: Bug in last night's bk test

From: Andrew Morton (
Date: Mon Sep 23 2002 - 17:05:59 EST

Paul Larson wrote:
> The automated nightly testing turned up a bug on one of the test
> machines last night. The system that had the problem was running ltp
> and was a 2-way PII-550, 2GB ram, ext2. Here is the ksymoops dump:
> ksymoops 2.4.5 on i686 2.4.18. Options used
> -V (default)
> -K (specified)
> -L (specified)
> -O (specified)
> -m (specified)
> kernel BUG at ll_rw_blk.c:1802!

Ah, yes.

The direct-io code will build requests which are larger than
the ips driver is prepared to accept, and the BIO layer correctly
BUGs out over it.

We need to convert direct-io to use the bio_add_page() facility
which Jens has recently added.

Until that's done you'll need to set BIO_MAX_PAGES to 16 in
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

This archive was generated by hypermail 2b29 : Mon Sep 23 2002 - 22:00:40 EST