From: John M. Choi (johnchoi_at_its_dot_caltech_dot_edu)
Date: Tue May 16 2006 - 00:03:09 PDT
Hi, I'm trying to install blcr-0.4.2 against linux-2.4.32. However, blcr uses locks_verify_area in 2 files: cr_module/cr_io.c vmadump/vmadump.c The first time I tried to install this, the module blcr_vmadump complained of unresolved symbol locks_verify_area. I believe that the function no longer exists in linux version > 2.4.29 except in arch/mips from looking at patch-2.4.30 from kernel.org. The new function seems to be rw_verify_area. So, I copied the function calls in linux-2.4.32/fs/read_write.c:sys_read/sys_write (as per the comments in cr_io.c) and changed the references in blcr. I then recompiled, but now the vmadump module complains: unresolved symbol rw_verify_area. So, just to make sure, I recompiled the kernel, and made sure that System.map and bzImage was self-consistent, copied the freshly compiled versions to /boot, re-ran lilo and rebooted. I then 'make distclean', and re-configure and re-make blcr, but I still get the unresolved symbol error. If I do 'grep rw_verify_area /boot/System.map', I get c014d5f0 T rw_verify_area but if I look in /proc/ksyms, the symbol does not exist. However, this symbol does exist in linux-2.4.32/vmlinux, which is used to create bzImage. (I'm confused about what's going on here.) I realize, that most of the people reading this are probably much more familiar with kernel internals than I (I'm basically guessing here), but I've tried to err on the side of verbosity in what I've tried for clarity's sake. Would anyone please be willing to offer any hints? It would be much appreciated. Thanks, John _____________________________________________ John Choi, Caltech 136-93, Pasadena, CA 91125 Tel: 626-395-4829 Fax: 626-405-0928