restructure results

1 files changed, 31 insertions, 0 deletions

diff --git a/results/classifier/zero-shot-user-mode/instruction/1812 b/results/classifier/zero-shot-user-mode/instruction/1812
new file mode 100644
index 000000000..c8fde1316
--- /dev/null
+++ b/results/classifier/zero-shot-user-mode/instruction/1812
@@ -0,0 +1,31 @@
+instruction: 0.571
+runtime: 0.220
+syscall: 0.209
+
+
+
+older programs running under qemu-aarch64 segfaults
+Description of problem:
+Numerous aarch64 programs segfaults when run under qemu-aarch64.
+Steps to reproduce:
+1. Install an arm64 chroot (with working qemu-aarch64 binfmt_misc setup):
+```
+debootstrap --variant=minbase --arch=arm64 jessie /tmp/jessie-arm64/ http://archive.debian.org/debian
+or
+debootstrap --variant=minbase --arch=arm64 xenial /tmp/xenial-arm64/ http://ports.ubuntu.com/
+```
+2. build qemu-aarch64; cp qemu-aarch64 /tmp/jessie-arm64/
+3. chroot /tmp/jessie-arm64/
+4. ./qemu-aarch64 /bin/ls
+```
+qemu: uncaught target signal 11 (Segmentation fault) - core dumped
+Segmentation fault 
+```
+Additional information:
+Old userspace (eg Debian jessie, Ubuntu xenial) does not work within qemu 8.1-rc2 aarch64 linux-user emulation, since commit 59b6b42cd3446862567637f3a7ab31d69c9bef51 .  My guess is that old userspace isn't prepared for recent CPU features, but it still smells strange.
+
+Not all programs segfaults. dash works, ls or bash does not.
+
+A chroot is easier in this case, since many old programs don't run inside current environment, like asserting while reading locale-specific information.  To run debootstrap and to enter the resulting chroot, a working qemu-aarch64 binfmt_misc setup is needed.
+
+Reverting the mentioned commit makes everything work again.