[ Dropping oss-security from Cc] John Paul Adrian Glaubitz <glaub...@physik.fu-berlin.de> writes: > On 10/27/21 13:06, Michael Ellerman wrote: >> John Paul Adrian Glaubitz <glaub...@physik.fu-berlin.de> writes: >>> On 10/27/21 07:30, Michael Ellerman wrote: >>>> I did test the repro case you gave me before (in the bugzilla), which >>>> was building glibc, that passes for me with a patched host. >>> >>> Did you manage to crash the unpatched host? >> >> Yes, the parallel builds of glibc you described crashed the unpatched >> host 100% reliably for me. > > OK, that is very good news! > >> I also have a standalone reproducer I'll send you. > > Thanks, that would be helpful! > >>> Also, I'll try a kernel from git with Debian's config. >>> >>>> I guess we have yet another bug. >>>> >>>> I tried the following in a debian BE VM and it completed fine: >>>> >>>> $ dget -u http://ftp.debian.org/debian/pool/main/g/git/git_2.33.1-1.dsc >>>> $ sbuild -d sid --arch=powerpc --no-arch-all git_2.33.1-1.dsc >>>> >>>> Same for ppc64. >>>> >>>> And I also tried both at once, repeatedly in a loop. >>> >>> Did you try building gcc-11 for powerpc and ppc64 both at once? >> >> No, I will try that now.
That completed fine on my BE VM here. I ran these in two tmux windows: $ sbuild -d sid --arch=powerpc --no-arch-all gcc-11_11.2.0-10.dsc $ sbuild -d sid --arch=ppc64 --no-arch-all gcc-11_11.2.0-10.dsc The VM has 32 CPUs, with 4 threads per core: $ ppc64_cpu --info Core 0: 0* 1* 2* 3* Core 1: 4* 5* 6* 7* Core 2: 8* 9* 10* 11* Core 3: 12* 13* 14* 15* Core 4: 16* 17* 18* 19* Core 5: 20* 21* 22* 23* Core 6: 24* 25* 26* 27* Core 7: 28* 29* 30* 31* cheers
