Bug#845690: gcc-6: gcc creates unbootable kernel on x86-64

2016-11-26 Thread Sven Joachim
Control: reassign -1 binutils 2.27.51.20161124-1 Control: retitle -1 binutils: creates unbootable kernel on x86-64 Control: severity -1 grave On 2016-11-26 15:13 +0100, Damien Wyart wrote: > After running further tests today, I think this is in fact *not* > related to gcc but to the kernel itself

Bug#845690: gcc-6: gcc creates unbootable kernel on x86-64

2016-11-26 Thread Damien Wyart
After running further tests today, I think this is in fact *not* related to gcc but to the kernel itself. I tested all 6.2.1-X versions as well as gcc-5 (5.4.1-3) and all the kernels fail to boot (balck screen just after grub and nothing in the logs). A few days ago (beginning of this week, I was

Bug#845690: gcc-6: gcc creates unbootable kernel on x86-64

2016-11-26 Thread Damien Wyart
Replying to myself: sorry for the false lead, this is not the same problem. The one from gcc bugtracker is not related to the stable gcc-6 branch used in Debian unstable, so the problem must be somewhere else. The -fno-printf-return-value is not recognized with gcc 6 from Sid. Best regards Damien

Bug#845690: gcc-6: gcc creates unbootable kernel on x86-64

2016-11-25 Thread Damien Wyart
Hi, The problem is discussed here: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78512 In the meantime, a workaround is to add -fno-printf-return-value to CFLAGS. Best regards Damien

Bug#845690: gcc-6: gcc creates unbootable kernel on x86-64

2016-11-25 Thread Meelis Roos
Package: gcc-6 Version: 6.2.1-5 Severity: normal Dear Maintainer, while testing latest 4.9-rc6+ git kernels, I noticed that the kernel failed to boot very early (only Booting the kernel was displayed) on multiple machines. Not that this is not about passing the pie flags to gcc or stack protecto