I was unable to trigger the issue on my rpi4 yet, but as you'd imagine it is rather slow. But (thanks Dannf) I got access to an X-gene - and carrying my known bad setup there (LXD container export FTW) I was able to recreate this on bare-metal as well.
(Host) Kernel: 5.4.0-58-generic Model: X-Gene - 8 cores The guest is Hirsute building qemu 5.0 with r11-5879 I got two known bug signatures - once the common one we see most and once a different one (that we've seen before with 20200507). This happened on the first two runs, once it has run some hours I'll post the rate of success-vs-fails as well. --- --- during RTL pass: reload /root/qemu-5.0/fpu/softfloat.c: In function ‘soft_f64_muladd’: /root/qemu-5.0/fpu/softfloat.c:1535:1: internal compiler error: Segmentation fault 1535 | } | ^ 0x56715f crash_signal ../../gcc/gcc/toplev.c:327 0x4599ad add_regs_to_insn_regno_info ../../gcc/gcc/lra.c:1445 0x459ab9 add_regs_to_insn_regno_info ../../gcc/gcc/lra.c:1537 0x459ab9 add_regs_to_insn_regno_info ../../gcc/gcc/lra.c:1537 0x45abc7 lra_update_insn_regno_info(rtx_insn*) ../../gcc/gcc/lra.c:1630 0x468985 lra_constraints(bool) ../../gcc/gcc/lra-constraints.c:5077 0x45bc15 lra(_IO_FILE*) ../../gcc/gcc/lra.c:2329 42d463 do_reload ../../gcc/gcc/ira.c:5802 0x42d463 execute ../../gcc/gcc/ira.c:5988 Please submit a full bug report, --- --- during RTL pass: reload /root/qemu-5.0/linux-user/syscall.c: In function ‘do_syscall1.constprop’: /root/qemu-5.0/linux-user/syscall.c:12479:1: internal compiler error: Segmentation fault 12479 | } | ^ 0x56715f crash_signal ../../gcc/gcc/toplev.c:327 0x527e35 extract_plus_operands ../../gcc/gcc/rtlanal.c:6320 0x52d84b extract_plus_operands ../../gcc/gcc/rtlanal.c:6324 0x52d84b decompose_normal_address ../../gcc/gcc/rtlanal.c:6373 0x52d84b decompose_address(address_info*, rtx_def**, machine_mode, unsigned char, rtx_code) ../../gcc/gcc/rtlanal.c:6474 0x52dbc3 decompose_mem_address(address_info*, rtx_def*) ../../gcc/gcc/rtlanal.c:6493 0x463551 process_address_1 ../../gcc/gcc/lra-constraints.c:3460 0x464c47 process_address ../../gcc/gcc/lra-constraints.c:3734 0x464c47 curr_insn_transform ../../gcc/gcc/lra-constraints.c:4049 0x468913 lra_constraints(bool) ../../gcc/gcc/lra-constraints.c:5138 0x45bc15 lra(_IO_FILE*) ../../gcc/gcc/lra.c:2329 0x42d463 do_reload ../../gcc/gcc/ira.c:5802 0x42d463 execute ../../gcc/gcc/ira.c:5988 Please submit a full bug report, -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890435 Title: gcc-10 breaks on armhf (flaky): internal compiler error: Segmentation fault To manage notifications about this bug go to: https://bugs.launchpad.net/gcc/+bug/1890435/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs