https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=208275
Bug ID: 208275
Summary: Kernel panic when reading from /dev/cd0 with a damaged
dvd
Product: Base System
Version: 11.0-CURRENT
Hardware: amd64
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: misc
Assignee: freebsd-bugs@FreeBSD.org
Reporter: b...@haps.ca
CC: freebsd-am...@freebsd.org
CC: freebsd-am...@freebsd.org
Created attachment 168591
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=168591&action=edit
dmesg
When I mount_cd9660 /dev/cd0 /mnt and then cp -Rv /mnt/ ., I reliably get a
kernel panic. The cd is a bit scratched and old, there are some read timeout
debug messages, and the it just reboots.
The machine is a Thinkpad T440p.
The version of freebsd is 11-current, FreeBSD 11.0-CURRENT #0 r297046
I initially thought it might be drm2/i915kms related, but it panics if those
modules are loaded or not.
I've attached dmesg, and /var/crash/core.txt.0.
/var/crash/info.0 is:
Dump header from device: /dev/ada0p3
Architecture: amd64
Architecture Version: 2
Dump Length: 856309760
Blocksize: 512
Dumptime: Thu Mar 24 22:11:03 2016
Hostname: t440p.example.com
Magic: FreeBSD Kernel Dump
Version String: FreeBSD 11.0-CURRENT #0 r297046: Sat Mar 19 02:16:14 EDT 2016
r...@t440p.example.com:/usr/obj/usr/src/sys/GENERIC
Panic String: page fault
Dump Parity: 1773259869
Bounds: 0
Dump Status: good
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