[1.] One line summary of the problem:
kernel/ksyms.c does not export init_mm, module bttv needs it
[2.] Full description of the problem/report:
Source file /usr/src/linux/kernel/ksyms.c does not export kernel symbol
init_mm, which is needed by module bttv.
[3.] Keywords (i.e., modules, networking, kernel):
kernel, symbol export, modules, bttv
[4.] Kernel version (from /proc/version):
Linux version 2.2.13-0.9 (root@GTEDHCP-56.inetarena.com) (gcc version egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)) #2 Fri May 26 16:20:31 PDT 2000
[5.] Output of Oops.. message (if applicable) with symbolic information
resolved (see Documentation/oops-tracing.txt)
No "oops" message; just an "unresolved symbol: init_mm"
[6.] A small shell script or example program which triggers the
problem (if possible)
One command: /sbin/modprobe bttv.o
[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 GTEDHCP-56.inetarena.com 2.2.13-0.9 #2 Fri May 26 16:20:31 PDT 2000 alpha unknown
Kernel modules 2.1.121
Gnu C egcs-2.91.66
Binutils 2.9.1.0.24
Linux C Library 2.1.2
Dynamic linker ldd (GNU libc) 2.1.2
Procps 2.0.5
Mount 2.9u
Net-tools 1.53
Console-tools 1999.03.02
Sh-utils 2.0
Modules Loaded bttv videodev tuner i2c
[7.2.] Processor information (from /proc/cpuinfo):
cpu : Alpha
cpu model : EV67
cpu variation : 7
cpu revision : 0
cpu serial number :
system type : Tsunami
system variation : DP264
system revision : 0
system serial number :
cycle frequency [Hz] : 666666666
timer frequency [Hz] : 1024.00
page size [bytes] : 8192
phys. address bits : 44
max. addr. space # : 255
BogoMIPS : 1329.59
kernel unaligned acc : 0 (pc=0,va=0)
user unaligned acc : 5467 (pc=20000ac8d20,va=120352a22)
platform string : AlphaPC 264DP 666 MHz
cpus detected : 1
[7.3.] Module information (from /proc/modules):
(The following was taken _after_ patching the kernel; see below for
context diff.)
bttv 44240 0 (unused)
videodev 4320 2 [bttv]
tuner 3080 1
i2c 5872 2 [bttv tuner]
[7.4.] SCSI information (from /proc/scsi/scsi)
Attached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
Vendor: SEAGATE Model: ST318275LW Rev: 0001
Type: Direct-Access ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 01 Lun: 00
Vendor: SEAGATE Model: ST318275LW Rev: 0001
Type: Direct-Access ANSI SCSI revision: 02
Host: scsi1 Channel: 00 Id: 03 Lun: 00
Vendor: YAMAHA Model: CRW8424S Rev: 1.0d
Type: CD-ROM ANSI SCSI revision: 02
[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):
This is a fairly stock Redhat 6.1 Alpha Deluxe installation with
"everything" installed. The kernel has been built a few times with
various configuration (device support and such) options.
[8.] Other notes, patches, fixes, workarounds:
The following is a context diff that seems to have solved the symbol
resolution problem for me. (I have yet to get xawtv or kwintv working,
but that would appear to be independent of getting the module to load.)
*** /usr/src/linux/kernel/ksyms.c.~1~ Thu Dec 9 13:26:35 1999
--- /usr/src/linux/kernel/ksyms.c Fri May 26 16:18:50 2000
***************
*** 416,418 ****
--- 416,421 ----
/* init task, for moving kthread roots - ought to export a function ?? */
EXPORT_SYMBOL(init_task_union);
+
+ /* Added by Rob Riches, 5/26/00. Module bttv needs init_mm */
+ EXPORT_SYMBOL(init_mm);
-
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This archive was generated by hypermail 2b29 : Wed May 31 2000 - 21:00:17 EST