restructure results

1 files changed, 22 insertions, 0 deletions

diff --git a/results/classifier/zero-shot-user-mode/instruction/1701808 b/results/classifier/zero-shot-user-mode/instruction/1701808
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--- /dev/null
+++ b/results/classifier/zero-shot-user-mode/instruction/1701808
@@ -0,0 +1,22 @@
+instruction: 0.632
+runtime: 0.245
+syscall: 0.124
+
+
+
+stack smashing in or after recvmsg system call in aarch64 user mode
+
+A program that invokes recvmsg aborts with "*** stack smashing detected ***" when run in qemu-aarch64 (user mode), but works fine when running on native aarch64 hardware.
+
+How to reproduce:
+$ aarch64-linux-gnu-gcc-5 -O -Wall /media/develdata/devel/qemu-bug/testpassfd.c -static -DEXTRA_SPACE=0
+$ QEMU_LD_PREFIX=/usr/aarch64-linux-gnu ~/inst-qemu/2.9.0/bin/qemu-aarch64 ./a.out
+*** stack smashing detected ***: ./a.out terminated
+qemu: uncaught target signal 6 (Aborted) - core dumped
+
+On native aarch64 hardware:
+$ ./a.out 
+$ echo $?
+0
+
+The parameter EXTRA_SPACE can be used to add additional space to the array that receives the recvmsg data. With -DEXTRA_SPACE=9 (or larger), the program runs fine. Which suggests that recvmsg is storing up to 9 bytes more than allowed in memory.
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