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| author | Guy Martin <gmsoft@tuxicoman.be> | 2013-11-21 13:23:16 -0500 |
|---|---|---|
| committer | Carlos O'Donell <carlos@redhat.com> | 2013-11-21 15:52:31 -0500 |
| commit | daf75146de07303ea0c5ad700ec5ef703ec114a1 (patch) | |
| tree | ed307e39a90288cbcdf727a7c07addb9f38f65d8 /elf | |
| parent | d33cafadfe365befa4ca6e0463fa926d56144046 (diff) | |
| download | glibc-daf75146de07303ea0c5ad700ec5ef703ec114a1.zip glibc-daf75146de07303ea0c5ad700ec5ef703ec114a1.tar.gz glibc-daf75146de07303ea0c5ad700ec5ef703ec114a1.tar.bz2 | |
Don't use broken DL_AUTO_FUNCTION_ADDRESS()
On hppa and ia64, the macro DL_AUTO_FUNCTION_ADDRESS() uses the
variable fptr[2] in it's own scope.
The content of fptr[] is thus undefined right after the macro exits.
Newer gcc's (>= 4.7) reuse the stack space of this variable triggering
a segmentation fault in dl-init.c:69.
To fix this we rewrite the macros to make the call directly to init
and fini without needing to pass back a constructed function pointer.
Diffstat (limited to 'elf')
| -rw-r--r-- | elf/dl-close.c | 5 | ||||
| -rw-r--r-- | elf/dl-fini.c | 2 | ||||
| -rw-r--r-- | elf/dl-init.c | 8 |
3 files changed, 4 insertions, 11 deletions
diff --git a/elf/dl-close.c b/elf/dl-close.c index fe3014c..407926b 100644 --- a/elf/dl-close.c +++ b/elf/dl-close.c @@ -274,9 +274,8 @@ _dl_close_worker (struct link_map *map) /* Next try the old-style destructor. */ if (imap->l_info[DT_FINI] != NULL) - (*(void (*) (void)) DL_DT_FINI_ADDRESS - (imap, ((void *) imap->l_addr - + imap->l_info[DT_FINI]->d_un.d_ptr))) (); + DL_CALL_DT_FINI (imap, ((void *) imap->l_addr + + imap->l_info[DT_FINI]->d_un.d_ptr)); } #ifdef SHARED diff --git a/elf/dl-fini.c b/elf/dl-fini.c index 6b245f0..db5269c 100644 --- a/elf/dl-fini.c +++ b/elf/dl-fini.c @@ -254,7 +254,7 @@ _dl_fini (void) /* Next try the old-style destructor. */ if (l->l_info[DT_FINI] != NULL) - ((fini_t) DL_DT_FINI_ADDRESS (l, l->l_addr + l->l_info[DT_FINI]->d_un.d_ptr)) (); + DL_CALL_DT_FINI(l, l->l_addr + l->l_info[DT_FINI]->d_un.d_ptr); } #ifdef SHARED diff --git a/elf/dl-init.c b/elf/dl-init.c index a657eb6..4078368 100644 --- a/elf/dl-init.c +++ b/elf/dl-init.c @@ -61,13 +61,7 @@ call_init (struct link_map *l, int argc, char **argv, char **env) - the others in the DT_INIT_ARRAY. */ if (l->l_info[DT_INIT] != NULL) - { - init_t init = (init_t) DL_DT_INIT_ADDRESS - (l, l->l_addr + l->l_info[DT_INIT]->d_un.d_ptr); - - /* Call the function. */ - init (argc, argv, env); - } + DL_CALL_DT_INIT(l, l->l_addr + l->l_info[DT_INIT]->d_un.d_ptr, argc, argv, env); /* Next see whether there is an array with initialization functions. */ ElfW(Dyn) *init_array = l->l_info[DT_INIT_ARRAY]; |