qemu-s390x puts a wrong value into SIGILL's siginfo_t's psw.addr: it should be a pointer to the instruction following the illegal instruction, but at the moment it is a pointer to the illegal instruction itself. This breaks OpenJDK, which relies on this value.
Patch 1 fixes the issue, patch 2 adds a test. v1: https://lists.nongnu.org/archive/html/qemu-devel/2021-05/msg06592.html v1 -> v2: Use a better buglink (Cornelia), simplify the inline asm magic in the test and add an explanation (David). v2: https://lists.nongnu.org/archive/html/qemu-devel/2021-05/msg06649.html v2 -> v3: Fix SIGSEGV handling (found when trying to run valgrind under qemu-user). Ilya Leoshkevich (2): target/s390x: Fix SIGILL psw.addr reporting tests/tcg/s390x: Test SIGILL and SIGSEGV handling linux-user/s390x/cpu_loop.c | 23 ++++- target/s390x/excp_helper.c | 71 +++++++------- target/s390x/internal.h | 1 + target/s390x/mem_helper.c | 2 +- tests/tcg/s390x/Makefile.target | 1 + tests/tcg/s390x/signal.c | 163 ++++++++++++++++++++++++++++++++ 6 files changed, 224 insertions(+), 37 deletions(-) create mode 100644 tests/tcg/s390x/signal.c -- 2.31.1
