Messages in this thread | | | Date | Mon, 8 Nov 1999 14:11:32 +0000 (GMT) | From | Gary Benson <> | Subject | Machine lockup bug report. |
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I have a bug to report. Here it is: Gary =)
[1.] One line summary of the problem:
Complete machine lockup when trying to dd a CD image to a local hard drive.
[2.] Full description of the problem/report:
When using the command `dd if=/dev/cdrom of=local/images/image.iso` within my home directory, the machine locked up. X was still displayed, but unresponsive. Virtual consoles not working, couldn't telnet into machine (over ethernet) or even ping it. Even the magic sysrq key didn't work (tried to sync/umount the drives).
When issuing the command from a virtual console, the message: `hdb: Timeout waiting for DMA' is displayed as the machine locks.
I managed to get identical crashes about six times, all just after a reboot.
I am able to mount and read this particular CD, and have done inbetween crashes. After mounting and umounting the CD, I was able to dd the image from it. I have dd'd images from different CD's before (on the same kernel and hardware). However, I managed to get the same crash by mounting the CD.
All these actions were performed under a user account (not root).
My home directory is mounted over NFS from another Linux box; the directory `local' in my home directory is a symlink to a partition on my local hard drive.
The CDROM is a Toshiba IDE drive, as slave. It is the only ide device in the system.
[3.] Keywords (i.e., modules, networking, kernel):
???
[4.] Kernel version (from /proc/version):
Linux version 2.2.13 (root@eepc-pss3) (gcc version egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)) #5 SMP Tue Nov 2 17:11:10 GMT 1999
[5.] Output of Oops.. message (if applicable) with symbolic information resolved (see Documentation/oops-tracing.txt)
N/A.
[6.] A small shell script or example program which triggers the problem (if possible)
N/A.
[7.] Environment
[7.1.] Software (add the output of the ver_linux script here)
-- Versions installed: (if some fields are empty or looks -- unusual then possibly you have very old versions) Linux eepc-pss3 2.2.13 #5 SMP Tue Nov 2 17:11:10 GMT 1999 i686 unknown Kernel modules 2.1.121 Gnu C egcs-2.91.66 Binutils 2.9.1.0.24 Linux C Library 1.2.so* Dynamic linker ldd (GNU libc) 2.1.2 Procps 2.0.4 Mount 2.9u Net-tools 1.53 Console-tools 1999.03.02 Sh-utils 2.0 Sh-utils Parker. Sh-utils Sh-utils Inc. Sh-utils NO Sh-utils PURPOSE. cat: /proc/modules: No such file or directory Modules Loaded
[7.2.] Processor information (from /proc/cpuinfo):
processor : 0 vendor_id : AuthenticAMD cpu family : 6 model : 1 model name : AMD-K7(tm) Processor stepping : 2 cpu MHz : 648.752790 cache size : 512 KB fdiv_bug : no hlt_bug : no sep_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr 6 mce cx8 sep mtrr pge 14 cmov fcmov 22 mmx 30 3dnow bogomips : 647.17
[7.3.] Module information (from /proc/modules):
Not running a modular kernel.
[7.4.] SCSI information (from /proc/scsi/scsi)
Attached devices: Host: scsi0 Channel: 00 Id: 01 Lun: 00 Vendor: QUANTUM Model: ATLAS IV 18 WLS Rev: 0808 Type: Direct-Access ANSI SCSI revision: 03
Card is an Adaptec AHA2940UW, which has been in use for several years with no problems.
[7.5.] Other information that might be relevant to the problem (please look in /proc and include all information that you think to be relevant):
Kernel has been running constantly for 6 days with no problems. Only difference between my 2.2.12 configuration and my 2.2.13 configuration is that I included ntfs.
[X.] Other notes, patches, fixes, workarounds:
None.
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