I can test It over real hardware, in which usually we can see more problems than in a virtual scenery. When I finish the test, I will report the results here. In Qemu, the boot looks fine, and the exec problems seem to have disappeared. I tested It using gnumach in SMP mode (--enable-cpus=2).
El jue., 8 oct. 2020 a las 0:17, Samuel Thibault (<samuel.thiba...@gnu.org>) escribió: > Hello, > > I might have found the trigger for the exec hang at boot. The symptoms > were that very early during the program loading by ld.so, it would > overflow its stack with 0x40, apparently because there were odd things > happening with the GOT. One odd thing was that ld.so was getting loaded > at 0x0. That's because it is a PIE. Issues that might come up are that > pointer 0x0 could then actually be a should-be-valid pointer... I > modified gnumach to load PIE binaries at 0x8000000, like our exec server > does, and couldn't reproduce the exec hang at boot. This is now in > debian as gnumach version 2:1.8+git20201007-1. > > Samuel > >
