Re: aha152x driver can lockup your machine

Yves (yrougy@iname.com)
Tue, 22 Dec 1998 16:59:18 +0100

Alan,

I have found the kernel version which contains the scsi code that makes
the system to crash. The 2.1.86 works, the 2.1.87 not. I have tried to change
all the scsi related files from 2.1.87 to 2.1.86 to find which one causes the
kernel to crash. The linux/drivers/scsi/scsi_errors.c file of the 2.1.86 version
in the 2.1.87 tree makes the whole thing works.

For memory, it's about to crash the 2.1.x kernels when using a aha1505 scsi
card (with the 152x driver). The crash occurs when we try to mount a Audio CD
on the scsi CD drive. The 2.1.86 returns an error, and 2.1.87+ return a kernel
panic.

The 2.1.86 contains
sigfillset(&current->blocked);
which is replaced by
siginitsetinv(&current->blocked, SHUTDOWN_SIGS);
in the 2.1.87 scsi_errors.c file.

I let the real hackers to undestand why... However, I think the aha152x driver
badly handles the 1505 card. But I do not know if it crashes with a real 1520
scsi card (Anyone ?). So is it a problem of the 1505 card or of the 152x family
cards ???

Hope this will help.

Yves yrougy at iname.com

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/