On Mon, Aug 13, 2012 at 01:13:35AM +0200, Juergen Lock wrote: > On Sun, Aug 05, 2012 at 07:38:11PM +0200, Juergen Lock wrote: > > On Sun, Aug 05, 2012 at 07:13:53PM +0300, Konstantin Belousov wrote: > > > On Sun, Aug 05, 2012 at 05:31:19PM +0200, Juergen Lock wrote: > > > > Hi kib, -current, seems we have a segfault in rtld when updating > > > > the multimedia/vlc port from the version currently in ports to the > > > > 2.0.3 CFT version from here: > > > > > > > > http://people.freebsd.org/~nox/tmp/vlc-2.0.3-006.patch > > > > > > > > (If you test the LIVEMEDIA knob you also need this update: > > > > > > > > http://people.freebsd.org/~nox/tmp/livemedia-20120404-001.patch > > > > > > > > ) > > > Please do two things. > > > > > > 1. Provide me the output of readelf -a for the module that was loaded. > > > > > > 2. Recompile rtld with debug symbols and redo the build to get the useful > > > backtrace from core: > > > cd /usr/src/libexec/rtld-elf > > > make clean > > > make all install DEBUG_FLAGS=-g > > > > > Ok, someone who got the crash will have to do this as I couln't > > reproduce it here (sorry forgot to say...) > > > I just learned that the missing piece in reproducing this is the > pulseaudio knob, now I finally have a bt: > > [...] > Loaded symbols for /libexec/ld-elf.so.1 > #0 symlook_obj (req=0x7fffffffbf40, obj=0x800640400) at > /d3t/d3t/home/nox/src10b/src/libexec/rtld-elf/rtld.c:3847 > 3847 for (symnum = obj->buckets[req->hash % obj->nbuckets]; > [New Thread 802406400 (LWP 100159/vlc-cache-gen)] > (gdb) bt > #0 symlook_obj (req=0x7fffffffbf40, obj=0x800640400) at > /d3t/d3t/home/nox/src10b/src/libexec/rtld-elf/rtld.c:3847 > #1 0x0000000800608ae7 in symlook_list (req=0x7fffffffc120, objlist=Variable > "objlist" is not available. > ) at /d3t/d3t/home/nox/src10b/src/libexec/rtld-elf/rtld.c:3611 > #2 0x000000080060911b in symlook_default (req=0x7fffffffc1c0, > refobj=Variable "refobj" is not available. > ) at /d3t/d3t/home/nox/src10b/src/libexec/rtld-elf/rtld.c:3569 > #3 0x000000080060939d in find_symdef (symnum=15, refobj=0x8006fd000, > defobj_out=0x7fffffffc260, flags=0, cache=0x80061d000, > lockstate=0x7fffffffc300) > at /d3t/d3t/home/nox/src10b/src/libexec/rtld-elf/rtld.c:1541 > #4 0x0000000800603690 in reloc_non_plt (obj=0x8006fd000, obj_rtld=Variable > "obj_rtld" is not available. > ) at /d3t/d3t/home/nox/src10b/src/libexec/rtld-elf/amd64/reloc.c:204 > #5 0x0000000800606ae8 in relocate_object (obj=0x8006fd000, bind_now=0 '\0', > rtldobj=0x800819d00, flags=0, lockstate=0x7fffffffc300) > at /d3t/d3t/home/nox/src10b/src/libexec/rtld-elf/rtld.c:2433 > #6 0x00000008006084a8 in dlopen_object (name=0x80243ec80 > "../modules/access/.libs/libpulsesrc_plugin.so", fd=Variable "fd" is not > available. > ) > at /d3t/d3t/home/nox/src10b/src/libexec/rtld-elf/rtld.c:2392 > #7 0x0000000800608f67 in rtld_dlopen (name=0x80243ec80 > "../modules/access/.libs/libpulsesrc_plugin.so", fd=-1, mode=1) > at /d3t/d3t/home/nox/src10b/src/libexec/rtld-elf/rtld.c:2761 > #8 0x0000000800ad377d in vlc_timer_create () from > /usr/ports/multimedia/vlc-203a/work/vlc-2.0.3/src/.libs/libvlccore.so.6 > #9 0x0000000800ab9998 in module_gettext () from > /usr/ports/multimedia/vlc-203a/work/vlc-2.0.3/src/.libs/libvlccore.so.6 > #10 0x0000000800aba0aa in module_list_get () from > /usr/ports/multimedia/vlc-203a/work/vlc-2.0.3/src/.libs/libvlccore.so.6 > #11 0x0000000800ab9db1 in module_list_get () from > /usr/ports/multimedia/vlc-203a/work/vlc-2.0.3/src/.libs/libvlccore.so.6 > #12 0x0000000800ab9db1 in module_list_get () from > /usr/ports/multimedia/vlc-203a/work/vlc-2.0.3/src/.libs/libvlccore.so.6 > #13 0x0000000800aba17d in module_list_get () from > /usr/ports/multimedia/vlc-203a/work/vlc-2.0.3/src/.libs/libvlccore.so.6 > #14 0x0000000800aba631 in module_list_get () from > /usr/ports/multimedia/vlc-203a/work/vlc-2.0.3/src/.libs/libvlccore.so.6 > #15 0x0000000800a52573 in libvlc_InternalInit () from > /usr/ports/multimedia/vlc-203a/work/vlc-2.0.3/src/.libs/libvlccore.so.6 > #16 0x00000008008227a7 in libvlc_new () from > /usr/ports/multimedia/vlc-203a/work/vlc-2.0.3/lib/.libs/libvlc.so.8 > #17 0x0000000000400cd4 in main () > (gdb) p obj->buckets > $1 = (const Elf_Hashelt *) 0x804de0160 > (gdb) p req->hash % obj->nbuckets > $2 = 399 > (gdb) p obj->buckets[req->hash % obj->nbuckets] > Cannot access memory at address 0x804de079c > (gdb) p obj->nbuckets > $3 = 521 Can you show the output of "p *obj" there ?
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