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| author | H.J. Lu <hjl.tools@gmail.com> | 2017-07-11 07:44:01 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2017-07-11 07:44:14 -0700 |
| commit | ed421fca42fd9b4cab7c66e77894b8dd7ca57ed0 (patch) | |
| tree | f1131793bd3340ada62e6d31434e1d8003eec2fd /ChangeLog | |
| parent | 94070f86c0c849c71ed2e7e2189bb4d1f7411a17 (diff) | |
| download | glibc-ed421fca42fd9b4cab7c66e77894b8dd7ca57ed0.zip glibc-ed421fca42fd9b4cab7c66e77894b8dd7ca57ed0.tar.gz glibc-ed421fca42fd9b4cab7c66e77894b8dd7ca57ed0.tar.bz2 | |
Avoid backtrace from __stack_chk_fail [BZ #12189]
__stack_chk_fail is called on corrupted stack. Stack backtrace is very
unreliable against corrupted stack. __libc_message is changed to accept
enum __libc_message_action and call BEFORE_ABORT only if action includes
do_backtrace. __fortify_fail_abort is added to avoid backtrace from
__stack_chk_fail.
[BZ #12189]
* debug/Makefile (CFLAGS-tst-ssp-1.c): New.
(tests): Add tst-ssp-1 if -fstack-protector works.
* debug/fortify_fail.c: Include <stdbool.h>.
(_fortify_fail_abort): New function.
(__fortify_fail): Call _fortify_fail_abort.
(__fortify_fail_abort): Add a hidden definition.
* debug/stack_chk_fail.c: Include <stdbool.h>.
(__stack_chk_fail): Call __fortify_fail_abort, instead of
__fortify_fail.
* debug/tst-ssp-1.c: New file.
* include/stdio.h (__libc_message_action): New enum.
(__libc_message): Replace int with enum __libc_message_action.
(__fortify_fail_abort): New hidden prototype.
* malloc/malloc.c (malloc_printerr): Update __libc_message calls.
* sysdeps/posix/libc_fatal.c (__libc_message): Replace int
with enum __libc_message_action. Call BEFORE_ABORT only if
action includes do_backtrace.
(__libc_fatal): Update __libc_message call.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 22 |
1 files changed, 22 insertions, 0 deletions
@@ -1,3 +1,25 @@ +2017-07-11 H.J. Lu <hongjiu.lu@intel.com> + + [BZ #12189] + * debug/Makefile (CFLAGS-tst-ssp-1.c): New. + (tests): Add tst-ssp-1 if -fstack-protector works. + * debug/fortify_fail.c: Include <stdbool.h>. + (_fortify_fail_abort): New function. + (__fortify_fail): Call _fortify_fail_abort. + (__fortify_fail_abort): Add a hidden definition. + * debug/stack_chk_fail.c: Include <stdbool.h>. + (__stack_chk_fail): Call __fortify_fail_abort, instead of + __fortify_fail. + * debug/tst-ssp-1.c: New file. + * include/stdio.h (__libc_message_action): New enum. + (__libc_message): Replace int with enum __libc_message_action. + (__fortify_fail_abort): New hidden prototype. + * malloc/malloc.c (malloc_printerr): Update __libc_message calls. + * sysdeps/posix/libc_fatal.c (__libc_message): Replace int + with enum __libc_message_action. Call BEFORE_ABORT only if + action includes do_backtrace. + (__libc_fatal): Update __libc_message call. + 2017-07-11 Adhemerval Zanella <adhemerval.zanella@linaro.org> [BZ #21738] |