2.4.10 - errors, freeze when burning CD-R

[Michael Rothwell]

I'm running 2.4.10 with the ext3 patch. I got a total freeze when
burning a CD-R last night. The syslog has lots of "3-order allocation
failed" messages. 

The SCSI bus keeps getting reset. I'm wondering if Nautilus is
interfering with CD-R recording as well. I've got hundreds of "kernel:
cdrom: This disc doesn't have any tracks I recognize!" messages. In
fact, they are the last things in my syslog before the freeze. Nearly
600 of them, consensed in groups of 30 or so ("message repeated...")

Oct 16 23:22:02 gromit kernel: cdrom: This disc doesn't have any tracks
I recognize!
Oct 16 23:22:33 gromit last message repeated 15 times
Oct 16 23:23:35 gromit last message repeated 31 times
Oct 16 23:24:19 gromit last message repeated 22 times
Oct 16 23:24:21 gromit gconfd (rothwell-1633): 19 items remain in the
cache after cleaning already-synced items older than $Oct 16 23:24:21
gromit kernel: cdrom: This disc doesn't have any tracks I recognize!
Oct 16 23:24:31 gromit last message repeated 5 times
Oct 16 23:24:33 gromit kernel: __alloc_pages: 3-order allocation failed
(gfp=0x20/0) from c012c920
Oct 16 23:24:33 gromit last message repeated 159 times
Oct 16 23:24:33 gromit kernel: cdrom: This disc doesn't have any tracks
I recognize!
Oct 16 23:25:05 gromit last message repeated 16 times
Oct 16 23:25:15 gromit last message repeated 5 times
Oct 16 23:25:16 gromit kernel: __alloc_pages: 3-order allocation failed
(gfp=0x20/0) from c012c920
Oct 16 23:25:16 gromit last message repeated 139 times
Oct 16 23:25:17 gromit kernel: cdrom: This disc doesn't have any tracks
I recognize!
Oct 16 23:25:40 gromit last message repeated 11 times
Oct 16 23:25:40 gromit kernel: __alloc_pages: 3-order allocation failed
(gfp=0x20/0) from c012c920
Oct 16 23:25:40 gromit last message repeated 139 times
Oct 16 23:25:42 gromit kernel: cdrom: This disc doesn't have any tracks
I recognize!
Oct 16 23:25:58 gromit last message repeated 8 times
Oct 16 23:25:58 gromit kernel: __alloc_pages: 3-order allocation failed
(gfp=0x20/0) from c012c920
Oct 16 23:25:58 gromit last message repeated 139 times
Oct 16 23:26:00 gromit kernel: cdrom: This disc doesn't have any tracks
I recognize!
Oct 16 23:26:28 gromit last message repeated 14 times
Oct 16 23:26:28 gromit kernel: __alloc_pages: 3-order allocation failed
(gfp=0x20/0) from c012c920
Oct 16 23:26:29 gromit last message repeated 109 times
Oct 16 23:26:30 gromit kernel: cdrom: This disc doesn't have any tracks
I recognize!
Oct 16 23:27:02 gromit last message repeated 16 times
Oct 16 23:27:14 gromit last message repeated 6 times
Oct 16 23:27:14 gromit modprobe: modprobe: Can't locate module
char-major-97
Oct 16 23:27:14 gromit last message repeated 3 times
Oct 16 23:27:16 gromit kernel: cdrom: This disc doesn't have any tracks
I recognize!
Oct 16 23:27:48 gromit last message repeated 16 times
Oct 16 23:28:28 gromit last message repeated 20 times
Oct 16 23:28:29 gromit su(pam_unix)[4163]: session opened for user root
by rothwell(uid=500)
Oct 16 23:28:30 gromit kernel: cdrom: This disc doesn't have any tracks
I recognize!
Oct 16 23:29:03 gromit last message repeated 16 times
Oct 16 23:29:07 gromit last message repeated 2 times
Oct 16 23:29:21 gromit gconfd (rothwell-1633): 18 items remain in the
cache after cleaning already-synced items older than $Oct 16 23:29:25
gromit kernel: cdrom: This disc doesn't have any tracks I recognize!
Oct 16 23:29:57 gromit last message repeated 17 times
Oct 16 23:30:25 gromit last message repeated 14 times
Oct 16 23:30:38 gromit kernel: scsi0:0:6:0: Attempting to queue an ABORT
message
Oct 16 23:30:38 gromit kernel: scsi0:0:6:0: Device is active, asserting
ATN
Oct 16 23:30:38 gromit kernel: Recovery code sleeping
Oct 16 23:30:38 gromit kernel: (scsi0:A:6:0): Abort Message Sent
Oct 16 23:30:38 gromit kernel: (scsi0:A:6:0): SCB 3 - Abort Completed.
Oct 16 23:30:38 gromit kernel: Recovery SCB completes
Oct 16 23:30:38 gromit kernel: Recovery code awake
Oct 16 23:30:38 gromit kernel: aic7xxx_abort returns 8194
Oct 16 23:30:38 gromit kernel: cdrom: This disc doesn't have any tracks
I recognize!
Oct 16 23:31:09 gromit last message repeated 16 times