On Mon, Jan 11, 2021 at 1:06 PM Andy Lutomirski <l...@amacapital.net> wrote: > > > > On Jan 11, 2021, at 12:00 PM, Borislav Petkov <b...@alien8.de> wrote: > > > > > > Or do you mean I should add "unsafe_fsgsbase" to grub cmdline and bisect > > with fsgsbase enabled in all test kernels? > > Yes. But I can also look myself in a bit. >
Tom, if I reproduce it in an interactive gdb and play a bit, I get: Program received signal SIGSEGV, Segmentation fault. 0xf7df2cb6 in init_cacheinfo () from target:/lib/libc.so.6 (gdb) p $gs = $gs $1 = 99 (gdb) si Program terminated with signal SIGSEGV, Segmentation fault. The program no longer exists. That's gdb itself crashing. Any idea what's wrong?
