Finally had a look at this case again and I am able to reproduce it. Kernel kills the command: [rakesh@simu build]$ ./pfunct -l -P ~/testrpms/webkitgtk-debuginfo-1.1.12-1.fc12.x86_64/usr/lib/debug/usr/lib64/libwebkit-1.0.so.2.debug with message: May 10 12:19:20 simu kernel: Out of memory: kill process 2956 (bash) score 496818 or a child May 10 12:19:20 simu kernel: Killed process 5758 (pfunct) On 6 January 2010 22:14, Arnaldo Carvalho de Melo wrote: > Em Wed, Jan 06, 2010 at 08:54:59PM +0530, Rakesh Pandit escreveu: >> While checking one of big shared objects I found kernel getting >> unhappy and sending SIGKILL. File was 282M libwebkit-1.0.so.2.8.1 from >> webkit project. (Can be obtained from >> http://kojipkgs.fedoraproject.org/packages/webkitgtk/1.1.12/2.fc12/x86_64/webkitgtk-debuginfo-1.1.12-2.fc12.x86_64.rpm >> and extracted via rpm2cpio, file is libwebkit-1.0.so.2.8.1.debug) >> >> URL: http://rakesh.fedorapeople.org/misc/0001-dwarf_loader.c-Fixed-leaked-bogon.patch > > What is the exact command line you are using? You cannot destroy that > obstack if you really will use the extra debugging info that is has > many pointers that will point to some other info if you destroy it. > > By default cu->extra_dbg_info is false, it only is true if set > explicitely by one of the tools, like: > > [acme@doppio pahole]$ grep extra_dbg_info *.c > dwarf_loader.c: if (cu->extra_dbg_info) { > dwarf_loader.c: return cu->extra_dbg_info ? > dwarf_loader.c: return cu->extra_dbg_info ? dtag->decl_line : 0; > dwarf_loader.c: return cu->extra_dbg_info ? dtag->id : 0; > dwarf_loader.c: return cu->extra_dbg_info ? dtag->type : 0; > dwarf_loader.c: cu->extra_dbg_info = conf ? conf->extra_dbg_info : 0; > dwarf_loader.c: if (!cu->extra_dbg_info) > dwarves.c: self->extra_dbg_info = 0; > pahole.c: conf_load.extra_dbg_info = 1; break; > pahole.c: conf_load.extra_dbg_info = 1; break; > pahole.c: conf_load.extra_dbg_info = 1; break; > pfunct.c: conf_load.extra_dbg_info = true; > pfunct.c: conf_load.extra_dbg_info = 1; break; > pfunct.c: conf_load.extra_dbg_info = true; > [acme@doppio pahole]$ > > pahole and pfunct, and inpahole, assuming it is the one you are using: > > .name = "decl_exclude", > .key = 'D', > .arg = "PREFIX", > .doc = "exclude classes declared in files with PREFIX", > > case 'D': decl_exclude_prefix = arg; > decl_exclude_prefix_len = strlen(decl_exclude_prefix); > conf_load.extra_dbg_info = 1; break; > > .name = "show_decl_info", > .key = 'I', > .doc = "Show the file and line number where the tags were defined" > > case 'I': conf.show_decl_info = 1; > conf_load.extra_dbg_info = 1; break; > > .name = "packable", > .key = 'P', > .doc = "show only structs that has holes that can be packed", > > case 'P': show_packable = 1; > conf_load.extra_dbg_info = 1; break; > > > The only seemingly "strange" case above is --packable, that I bet is > what you're using, where it needs the extra debug info because for > anonymous structs it shows in which file and line the struct is, and > that is only available from the DWARF info. > I am using -l ( along with -P & one more option also) among the above. ELF file is webkitgtk-debuginfo-1.1.12-1.fc12.x86_64/usr/lib/debug/usr/lib64/libwebkit-1.0.so.2.debug which is essentially a symlink to libwebkit-1.0.so.2.8.1.debug in same debuginfo rpm. Link to debuginfo rpm is: http://kojipkgs.fedoraproject.org/packages/webkitgtk/1.1.12/1.fc12/x86_64/webkitgtk-debuginfo-1.1.12-1.fc12.x86_64.rpm It is 290 MB ELF file. > Can you try the following patch to see if the problem goes away? We may > want to just enable extra_dbg_info in this case if used with --verbose, > something like that. > Looking into where this leaks happens and what would be better way to deal with it. -- Rakesh Pandit https://fedoraproject.org/wiki/User:Rakesh freedom, friends, features, first -- To unsubscribe from this list: send the line "unsubscribe dwarves" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
