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Diffstat (limited to 'gitlab/issues/target_riscv/host_missing/accel_missing/1093.toml')
| -rw-r--r-- | gitlab/issues/target_riscv/host_missing/accel_missing/1093.toml | 41 |
1 files changed, 0 insertions, 41 deletions
diff --git a/gitlab/issues/target_riscv/host_missing/accel_missing/1093.toml b/gitlab/issues/target_riscv/host_missing/accel_missing/1093.toml deleted file mode 100644 index b3cf84d23..000000000 --- a/gitlab/issues/target_riscv/host_missing/accel_missing/1093.toml +++ /dev/null @@ -1,41 +0,0 @@ -id = 1093 -title = "RISC-V: signal frame is misaligned in signal handlers" -state = "closed" -created_at = "2022-06-29T20:45:51.271Z" -closed_at = "2022-08-02T13:35:56.948Z" -labels = ["Closed::Fixed", "linux-user", "target: riscv"] -url = "https://gitlab.com/qemu-project/qemu/-/issues/1093" -host-os = "Linux" -host-arch = "x86_64" -qemu-version = "7.0.0" -guest-os = "n/a" -guest-arch = "RISC-V 64" -description = """`qemu-user` misaligns the signal frame (to 4 bytes rather than 16 bytes) on RISC-V 64, e.g causing pointer misalignment diagnostics to be triggered by UBSan.""" -reproduce = """1. Create a C file with the following contents: -```c -#include <signal.h> -#include <stdio.h> - -void handler(int sig, siginfo_t *info, void *context) { -\tprintf("signal occurred, info: %p, context: %p\\n", info, context); -} - -int main() { -\tstruct sigaction act; -\tact.sa_flags = SA_SIGINFO; -\tact.sa_sigaction = handler; -\tsigaction(SIGINT, &act, NULL); - -\t// Deliberately misalign the stack -\tasm volatile ("addi sp, sp, -4"); - -\twhile(1); -\t// Unreachable -} -``` -2. Compile with an appropriate RISC-V toolchain and run with `qemu-riscv64 ./a.out`. -3. Send a `SIGINT` (e.g by hitting Ctrl-C), and observe that the signal frame will be misaligned: -``` -signal occurred, info: 0x400080025c, context: 0x40008002dc -```""" -additional = """This issue is alluded to in the source code, see https://gitlab.com/qemu-project/qemu/-/blob/master/linux-user/riscv/signal.c#L68-69. It should be sufficient to change that constant to 15.""" |