git pull
[..]
Starting, for example, mplayer [..] with audio device being busy, results in:
Program received signal SIGSEGV, Segmentation fault.
0x00007ffff7de7be1 in do_lookup_x () from /lib/ld-linux-x86-64.so.2
(gdb) bt
#0 0x00007ffff7de7be1 in do_lookup_x () from /lib/ld-linux-x86-64.so.2
#1 0x00007ffff7de84d2 in _dl_lookup_symbol_x () from /lib/ld-linux-x86-64.so.2
#2 0x00007fffefb0d035 in ?? () from /lib/libc.so.6
#3 0x00007ffff6151014 in ?? () from /lib/libdl.so.2
#4 0x00007ffff7dec736 in _dl_catch_error () from /lib/ld-linux-x86-64.so.2
#5 0x00007ffff615149c in ?? () from /lib/libdl.so.2
#6 0x00007ffff615106a in dlsym () from /lib/libdl.so.2
#7 0x00007ffff638c533 in ?? () from /usr/lib/libasound.so.2
#8 0x00007ffff638c61d in snd_dlsym () from /usr/lib/libasound.so.2
#9 0x00007ffff6387a04 in ?? () from /usr/lib/libasound.so.2
#10 0x00007ffff6385cc1 in ?? () from /usr/lib/libasound.so.2
#11 0x00007ffff6385d24 in ?? () from /usr/lib/libasound.so.2
#12 0x00007ffff6386ed1 in snd_config_expand () from /usr/lib/libasound.so.2
#13 0x00007ffff63877df in snd_config_search_definition () from /usr/lib/libasound.so.2
#14 0x00007ffff63a306a in ?? () from /usr/lib/libasound.so.2
#15 0x00000000004e9843 in ?? ()
#16 0x00000000004e474f in init_best_audio_out ()
#17 0x00000000004d8b6b in reinit_audio_chain ()
#18 0x00000000004da811 in main ()
(even with -ao alsa).
Which is:
76 static int
77 __attribute_noinline__
78 do_lookup_x (const char *undef_name, uint_fast32_t new_hash,
79 unsigned long int *old_hash, const ElfW(Sym) *ref,
80 struct sym_val *result, struct r_scope_elem *scope, size_t i,
81 const struct r_found_version *const version, int flags,
82 struct link_map *skip, int type_class, struct link_map *undef_map)
83 {
84 size_t n = scope->r_nlist;
85 /* Make sure we read the value before proceeding. Otherwise we
86 might use r_list pointing to the initial scope and r_nlist being
87 the value after a resize. That is the only path in dl-open.c not
88 protected by GSCOPE. A read barrier here might be to expensive. */
89 __asm volatile ("" : "+r" (n), "+m" (scope->r_list));
90 struct link_map **list = scope->r_list;
91
92 do
93 {
94 /* These variables are used in the nested function. */
95 Elf_Symndx symidx;
96 int num_versions = 0;
97 const ElfW(Sym) *versioned_sym = NULL;
98 77 __attribute_noinline__
78 do_lookup_x (const char *undef_name, uint_fast32_t new_hash,
79 unsigned long int *old_hash, const ElfW(Sym) *ref,
80 struct sym_val *result, struct r_scope_elem *scope, size_t i,
81 const struct r_found_version *const version, int flags,
82 struct link_map *skip, int type_class, struct link_map *undef_map)
83 {
84 size_t n = scope->r_nlist;
85 /* Make sure we read the value before proceeding. Otherwise we
86 might use r_list pointing to the initial scope and r_nlist being
87 the value after a resize. That is the only path in dl-open.c not
88 protected by GSCOPE. A read barrier here might be to expensive. */
89 __asm volatile ("" : "+r" (n), "+m" (scope->r_list));
90 struct link_map **list = scope->r_list;
91
92 do
93 {
94 /* These variables are used in the nested function. */
95 Elf_Symndx symidx;
96 int num_versions = 0;
97 const ElfW(Sym) *versioned_sym = NULL;
99 const struct link_map *map = list[i]->l_real;
100
101 [..]
