Created attachment 303018 [details] Host dmesg log Environment: CPU Architecture: x86_64 Host OS: Red Hat Enterprise Linux 8.4 (Ootpa) Host kernel: 6.0.0-rc7 gcc: gcc (GCC) 8.4.1 Host kernel source: https://git.kernel.org/pub/scm/virt/kvm/kvm.git Branch: next Commit: e18d6152ff0f41b7f01f9817372022df04e0d354 Bug Detailed Description: Assertion failure and host call trace happened after executing kvm selftest mmio_warning_test. Reproducing Steps: git clone https://git.kernel.org/pub/scm/virt/kvm/kvm.git cd kvm && make headers_install cd kvm/tools/testing/selftests/kvm && make cd x86_64 && ./mmio_warning_test Actual Result: [root@icx-2s2 ~]# kvm/tools/testing/selftests/kvm/x86_64/mmio_warning_test ret1=0 exit_reason=17 suberror=1 ret1=0 exit_reason=8 suberror=65530 ret1=0 exit_reason=17 suberror=1 ret1=0 exit_reason=8 suberror=65530 ret1=0 exit_reason=17 suberror=1 ret1=0 exit_reason=8 suberror=65530 ret1=0 exit_reason=17 suberror=1 ret1=0 exit_reason=8 suberror=65530 ret1=0 exit_reason=17 suberror=1 ret1=0 exit_reason=8 suberror=65530 ret1=0 exit_reason=17 suberror=1 ret1=0 exit_reason=8 suberror=65530 ret1=0 exit_reason=17 suberror=1 ret1=0 exit_reason=8 suberror=65530 ret1=0 exit_reason=17 suberror=1 ret1=0 exit_reason=8 suberror=65530 ret1=0 exit_reason=17 suberror=1 ret1=0 exit_reason=8 suberror=65530 ret1=0 exit_reason=17 suberror=1 ret1=0 exit_reason=8 suberror=65530 ==== Test Assertion Failure ==== x86_64/mmio_warning_test.c:118: warnings_before == warnings_after pid=4383 tid=4383 errno=0 - Success 1 0x0000000000402463: main at mmio_warning_test.c:117 2 0x00007f5bc5c23492: ?? ??:0 3 0x00000000004024dd: _start at ??:? Warnings found in kernel. Run 'dmesg' to inspect them. [root@icx-2s2 ~]#dmesg |grep -i "call trace" [ 208.938961] Call Trace: [ 209.289307] Call Trace: [ 209.683239] Call Trace: [ 210.016660] Call Trace: [ 210.389796] Call Trace: [ 210.727731] Call Trace: [ 211.090710] Call Trace: [ 211.422556] Call Trace: [ 211.785661] Call Trace: [ 212.117551] Call Trace: Expected Result: [root@icx-2s2 ~]#kvm/tools/testing/selftests/kvm/x86_64/mmio_warning_test [root@icx-2s2 ~] [root@icx-2s2 ~]#dmesg |grep -i "call trace" [root@icx-2s2 ~]
On Mon, Oct 17, 2022, bugzilla-daemon@kernel.org wrote: > Created attachment 303018 [details] > --> https://bugzilla.kernel.org/attachment.cgi?id=303018&action=edit > ==== Test Assertion Failure ==== > x86_64/mmio_warning_test.c:118: warnings_before == warnings_after > pid=4383 tid=4383 errno=0 - Success > 1 0x0000000000402463: main at mmio_warning_test.c:117 > 2 0x00007f5bc5c23492: ?? ??:0 > 3 0x00000000004024dd: _start at ??:? > Warnings found in kernel. Run 'dmesg' to inspect them. Known bug. Fix is posted[*], will make sure it gets into 6.1 and I suppose backported to stable. [*] https://lore.kernel.org/all/20220930230008.1636044-1-seanjc@google.com