On 10.10.2016 03:01, Torbjörn Granlund wrote: > This is a long-standing issue; I've reproduced it in 2.5.0, 2.6.2, and > 2.7.0. > > Command used: qemu-mipsn32 ./reuse > > The binary file 'reuse' is attached. > > Funnily enough, it does not fail every time. (I would expect user-level > emulation to be pretty deterministic, but alas, this is not.) > > When it fails, it either says, > > qemu: uncaught target signal 11 (Segmentation fault) - core dumped > Segmentation fault > > or unfrequently, > > mipsn: /var/tmp/build.2567/qemu-2.6.2/translate-all.c:1884: page_set_flags: > Assertion `start < end' failed. > qemu: uncaught target signal 6 (Aborted) - core dumped > > while the same binary runs fine on hardware as well as > emulated systems running under qemu-system-mips64. > > The failures only happen for the n32 ABI (not o32 or 64). > > This test case comes from GMP (default gcc compile of > gmp/tests/mpz/reuse.c). > > (Host and guest systems all run Debian 8.)
Could you maybe get a proper backtrace of the crash with gdb? I guess that would help to track down the problem. And please make sure to copy the MIPS maintainers on CC: when reporting such issues (see MAINTAINERS file), otherwise your mail might get lost in the high traffic of the qemu-devel mailing list. Thanks, Thomas
