diff options
Diffstat (limited to 'libc/elf/dl-runtime.c')
| -rw-r--r-- | libc/elf/dl-runtime.c | 28 |
1 files changed, 23 insertions, 5 deletions
diff --git a/libc/elf/dl-runtime.c b/libc/elf/dl-runtime.c index 2e02a218e..19543aa44 100644 --- a/libc/elf/dl-runtime.c +++ b/libc/elf/dl-runtime.c @@ -1,5 +1,5 @@ /* On-demand PLT fixup for shared objects. - Copyright (C) 1995-2009, 2010, 2011 Free Software Foundation, Inc. + Copyright (C) 1995-2012 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -56,7 +56,6 @@ to that address. Future calls will bounce directly from the PLT to the function. */ -#ifndef ELF_MACHINE_NO_PLT DL_FIXUP_VALUE_TYPE __attribute ((noinline)) ARCH_FIXUP_ATTRIBUTE _dl_fixup ( @@ -150,9 +149,8 @@ _dl_fixup ( return elf_machine_fixup_plt (l, result, reloc, rel_addr, value); } -#endif -#if !defined PROF && !defined ELF_MACHINE_NO_PLT && !__BOUNDED_POINTERS__ +#if !defined PROF && !__BOUNDED_POINTERS__ DL_FIXUP_VALUE_TYPE __attribute ((noinline)) ARCH_FIXUP_ATTRIBUTE _dl_profile_fixup ( @@ -164,6 +162,26 @@ _dl_profile_fixup ( { void (*mcount_fct) (ElfW(Addr), ElfW(Addr)) = INTUSE(_dl_mcount); + if (l->l_reloc_result == NULL) + { + /* BZ #14843: ELF_DYNAMIC_RELOCATE is called before l_reloc_result + is allocated. We will get here if ELF_DYNAMIC_RELOCATE calls a + resolver function to resolve an IRELATIVE relocation and that + resolver calls a function that is not yet resolved (lazy). For + example, the resolver in x86-64 libm.so calls __get_cpu_features + defined in libc.so. Skip audit and resolve the external function + in this case. */ + *framesizep = -1; + return _dl_fixup ( +# ifdef ELF_MACHINE_RUNTIME_FIXUP_ARGS +# ifndef ELF_MACHINE_RUNTIME_FIXUP_PARAMS +# error Please define ELF_MACHINE_RUNTIME_FIXUP_PARAMS. +# endif + ELF_MACHINE_RUNTIME_FIXUP_PARAMS, +# endif + l, reloc_arg); + } + /* This is the address in the array where we store the result of previous relocations. */ struct reloc_result *reloc_result = &l->l_reloc_result[reloc_index]; @@ -417,7 +435,7 @@ _dl_profile_fixup ( return value; } -#endif /* PROF && ELF_MACHINE_NO_PLT */ +#endif /* PROF */ #include <stdio.h> |