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authorCarmelo Amoroso <carmelo.amoroso@st.com>2009-12-03 13:33:16 +0100
committerCarmelo Amoroso <carmelo.amoroso@st.com>2009-12-03 13:33:16 +0100
commitb3d31460fbf188997c7337296a61409529f7c974 (patch)
treeb451066b5b869f1d6941d5232ba4f97ad8e56c00 /libpthread/linuxthreads/specific.c
parentb93ab6041d56a5a19d8a97b69f6e3202fd11e859 (diff)
ldso_tls: Refetch dtv from memory if THREAD_DTV has changed
_dl_update_slotinfo might change THREAD_DTV () (if it needs to reallocate it), but the caller (__tls_get_addr) doesn't refetch dtv from memory, it uses its cached copy. This may crash (if dtv[GET_ADDR_MODULE] is off the cliff, or might read uninitialized memory and return it. Typically dtv[GET_ADDR_MODULE].pointer.val is NULL and so __tls_get_addr returns NULL + offset_within_PT_TLS. The next time __tls_get_addr is called for the same library it will return correct address as _dl_update_slotinfo won't need to be called. Signed-off-by: Jakub Jelinek <jakub@redhat.com> Signed-off-by: Filippo Arcidiacono <filippo.arcidiacono@st.com> Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
Diffstat (limited to 'libpthread/linuxthreads/specific.c')
0 files changed, 0 insertions, 0 deletions