Running Fedora 28 on the test system, I have encountered the following issues with various applications, and found substitute rpm workarounds.. Usually, these can be installed by downloading them ,and then using # rpm -Uvh……… –force.. Grub-customizer still crashes, but the F27 version works ( grub-customizer-5.0.6-6.fc27.x86_64 ) Wine crashes with some windows apps, and the workaround is … Continue reading →
Kernel 4.17-rc6 has been released, and details of changes since -rc5 are here: http://lkml.iu.edu/hypermail/linux/kernel/1805.2/03965.html This version is still OK with the latest VMware (14.1.1) and NVIDIA (396.24) drivers, but also includes fixes for repeated GCC8 / objtool warnings at compile time: ………………. Josh Poimboeuf (5): ………. objtool: Support GCC 8’s cold subfunctions objtool: Support GCC 8 switch … Continue reading →
There are now patches available to deal with the host of ‘objtool‘ warnings when compiling the kernel with GCC8: …………………………….. drivers/video/fbdev/core/fbmem.o: warning: objtool: fb_set_var()+0x209: sibling call from callable instruction with modified stack frame drivers/video/fbdev/core/fbmem.o: warning: objtool: do_remove_conflicting_framebuffers()+0xa6: sibling call from callable instruction with modified stack frame drivers/video/fbdev/core/fbmem.o: warning: objtool: register_framebuffer()+0x14b: sibling call from callable instruction with modified … Continue reading →
Fedora 28 has GCC 8.1.1 available (currently in ‘updates-testing‘ repo), and I tested this with Kernel 4.17-rc4, to see if there was any improvement in the horde of warnings generated with 8.0.1. In short, there is no real difference: ……………………………… CC security/keys/request_key.o arch/x86/kvm/lapic.o: warning: objtool: kvm_lapic_reg_read()+0x126: sibling call from callable instruction with modified stack frame arch/x86/kvm/lapic.o: warning: … Continue reading →
Tried Kernel 4.16.7 on Fedora 28 (GCC 8.0.1), and this now compiles successfully, although still with a lot of ‘warnings’.. I use grub-customizer with each new kernel, and the F28 version of this fails: # grub-customizer Error creating proxy: The connection is closed (g-io-error-quark, 18) *** initializing (w/o specified bootloader type)… * reading partition info… /usr/include/c++/8/bits/basic_string.h:1048: std::__cxx11::basic_string<_CharT, … Continue reading →
Fedora 28 has been released, but this includes GCC 8 (8.0.1) which – currently – is not capable of compiling Kernel 4.16 as-is (tested with 4.16.6): ……………………………. CC /usr/src/linux-4.16.6/tools/objtool/objtool.o CC /usr/src/linux-4.16.6/tools/objtool/libstring.o CC /usr/src/linux-4.16.6/tools/objtool/str_error_r.o ../lib/str_error_r.c: In function ‘str_error_r’: ../lib/str_error_r.c:25:3: error: passing argument 1 to restrict-qualified parameter aliases with argument 5 [-Werror=restrict] snprintf(buf, buflen, “INTERNAL ERROR: strerror_r(%d, %p, %zd)=%d”, … Continue reading →
I decided to try updating a crash-and-burn test system to Fedora 28 (early-beta..) as this included GCC 8 (currently 8.0.1), to see how well the Kernel (4.16-rc6) compiled.. There were a lot of warnings generated: …………………… CC [M] drivers/rtc/rtc-pcf8523.o CC drivers/usb/core/file.o CC drivers/video/hdmi.o CC [M] drivers/rtc/rtc-pcf8563.o drivers/video/hdmi.c: In function ‘hdmi_spd_infoframe_init’: drivers/video/hdmi.c:171:2: warning: ‘strncpy’ specified bound 8 equals … Continue reading →
The recent summary of Kernel 4.15 mentioned the test for ‘compliant’ versions of GCC which fully support the retpoline mitigation, but only gave an example of non-compliance: With GCC 7.2: ~]$ cat /sys/devices/system/cpu/vulnerabilities/spectre_v2 Vulnerable: Minimal generic ASM retpoline I re-created Fedora (Rawhide) GCC 7.3.1 for Fedora 27, and it gives the following, after Kernel 4.15 compilation/boot: ~]$ … Continue reading →
There has been a new release of Workstation 12.5 – 12.5.8 – and the – rather vague – release notes are here: https://docs.vmware.com/en/VMware-Workstation-Pro/12.0/rn/workstation-1258-release-notes.html I tested this with a ‘clean’ install on my cash-and-burn system, and basically, it suffers from the same compatibility problems as 12.5.7. GCC7, Fedora 26/27, and Kernel 14.x all cause it to fail. # … Continue reading →
Kernel 4.13-rc6 is out, and brief details of changes are here: http://lkml.iu.edu/hypermail/linux/kernel/1708.2/03592.html As the message mentions, if all goes well, then 4.13 Final should be out in about two weeks time from now.. The release is still OK with the latest NVIDIA (tested with 384.59) and (patched) VMware 12.5.7. Unfortunately, there is still no 12.5.8 release with … Continue reading →