Messages in this thread | | | From | Stas Sergeev <> | Subject | [PATCH 0/4] make sigaltstack() compatible with swapcontext() | Date | Sun, 31 Jan 2016 19:16:41 +0300 |
| |
The following patches add the self-test for sigaltstack(SS_DISABLE) inside the signal handler, and allow an app to temporarily disable and re-enable the sigaltstack within a sighandler. This is needed to make sigaltstack() compatible with swapcontext(): before using swapcontext() inside the sighandler, the sigaltstack should be disabled, or the stack will be corrupted by the subsequent signals.
arch/score/kernel/signal.c | 2 arch/x86/kernel/signal.c | 2 include/linux/sched.h | 8 + include/linux/signal.h | 2 kernel/fork.c | 4 kernel/signal.c | 54 +++++++---- tools/testing/selftests/Makefile | 1 tools/testing/selftests/sigaltstack/Makefile | 8 + tools/testing/selftests/sigaltstack/sas.c | 132 +++++++++++++++++++++++++++ 9 files changed, 189 insertions(+), 24 deletions(-)
| |