On 02.03.2012, at 18:49, Peter Maydell wrote: > On 27 February 2012 15:16, Bernhard M. Wiedemann <bwiedem...@suse.de> wrote: >> I found that running a debian arm5 bash with qemu runs into varying >> problems with -R but works without. > > So I had a look at this this afternoon, and what seems to be happening > is that with -R, the call to target_mmap() in elfload.c:setup_arg_pages() > (which creates the stack) is putting the stack immediately after the > bash BSS segment in the address space. This means that brk() will > never be able to expand, and it looks like something in either bash > or libc's locale code isn't correctly handling the failure, so we > crash. (The segfault is from a strlen(NULL) from setlocale() I think.) > > We should probably try to put the stack somewhere more sensible than > where it currently ends up...
Yikes - I just realized that git on armv7 also breaks due to this: https://build.opensuse.org/package/live_build_log?arch=armv7l&package=git&project=openSUSE%3AFactory%3AARM&repository=standard So how could we go with this? Give target_mmap a hint that we want to map at some randomly defined address rather than let it to its automatic thing? Alex
