linux-kernel - ATA scsi driver misbehavior under kdump capture kernel

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <46AA82D6.mailxB9W1BQ61V@eag09.americas.sgi.com>
Date:	Fri, 27 Jul 2007 18:42:14 -0500
From:	cpw@....com (Cliff Wickman)
To:	linux-kernel@...r.kernel.org
Subject: ATA scsi driver misbehavior under kdump capture kernel




I've run into a problem with the ATA SCSI disk driver when running in a
kdump dump-capture kernel.

I'm running on 2-processor x86_64 box.  It has 2 scsi disks, /dev/sda and
/dev/sdb

My kernel is 2.6.22, and built to be a dump capturing kernel loaded by kexec.
When I boot this kernel by itself, it finds both sda and sdb.

But when it is loaded by kexec and booted on a panic it only finds sda.

Any ideas from those familiar with the ATA driver?


-Cliff Wickman
 SGI



I put some printk's into it and get this:

Standalone:

                                                   [nv_adma_error_handler]
cpw: ata_host_register probe port 1 (error_handler:ffffffff81348625)
cpw: ata_host_register call ata_port_probe
cpw: ata_host_register call ata_port_schedule
cpw: ata_host_register call ata_port_wait_eh
cpw: ata_port_wait_eh entered
cpw: ata_port_wait_eh, preparing to wait
ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
cpw: ata_dev_configure entered
cpw: ata_dev_configure testing class
cpw: ata_dev_configure class is ATA_DEV_ATA
ata2.00: ATA-6: ST3200822AS, 3.01, max UDMA/133
ata2.00: 390721968 sectors, multi 16: LBA48
cpw: ata_dev_configure exiting
cpw: ata_dev_configure entered
cpw: ata_dev_configure testing class
cpw: ata_dev_configure class is ATA_DEV_ATA
cpw: ata_dev_configure exiting
cpw: ata_dev_set_mode printing:
ata2.00: configured for UDMA/133
cpw: ata_port_wait_eh, finished wait
cpw: ata_port_wait_eh exiting
cpw: ata_host_register done with probe port 1


When loaded with kexec and booted on a panic:

cpw: ata_host_register probe port 1 (error_handler:ffffffff81348625)
cpw: ata_host_register call ata_port_probe
cpw: ata_host_register call ata_port_schedule
cpw: ata_host_register call ata_port_wait_eh
cpw: ata_port_wait_eh entered
cpw: ata_port_wait_eh, preparing to wait
ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
cpw: ata_port_wait_eh, finished wait
cpw: ata_port_wait_eh exiting
cpw: ata_host_register done with probe port 1

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