diff options
Diffstat (limited to 'results/classifier/zero-shot-user-mode/output/runtime/1650')
| -rw-r--r-- | results/classifier/zero-shot-user-mode/output/runtime/1650 | 20 |
1 files changed, 0 insertions, 20 deletions
diff --git a/results/classifier/zero-shot-user-mode/output/runtime/1650 b/results/classifier/zero-shot-user-mode/output/runtime/1650 deleted file mode 100644 index c7ae56cf..00000000 --- a/results/classifier/zero-shot-user-mode/output/runtime/1650 +++ /dev/null @@ -1,20 +0,0 @@ -runtime: 0.759 -instruction: 0.212 -syscall: 0.029 - - - -Consider doing runtime detection of MAP_FIXED_NOREPLACE -Description of problem: -``` -qemu-i386-static: Unable to reserve 0xfffff000 bytes of virtual address space at 0x1000 (Operation not supported) for use as guest address space (check your virtual memory ulimit setting, min_mmap_addr or reserve less using -R option) -``` -strace says -``` - mmap(0x1000, 4294963200, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE|MAP_FIXED_NOREPLACE, -1, 0) = -1 EOPNOTSUPP (Operation not supported) -``` -Steps to reproduce: -1. `apt install qemu-i386-static 32subsystem` -2. `strace qemu-i386-static /opt/32/bin/as` -Additional information: -Repeating the strace call in a minimal C program gives the same errno as expected -- the kernel is only 4.4. The problem here is that qemu only does `MAP_FIXED_NOREPLACE` feature detection at build-time via a `#ifndef` and even that behavior is poorly documented. Maybe do something at runtime? |