https://bugzilla.kernel.org/show_bug.cgi?id=216364 Bug ID: 216364 Summary: [Kernel IBT][kvm] There was "Missing ENDBR" in kvm when syzkaller tests Product: Virtualization Version: unspecified Kernel Version: v5.19 mainline kernel Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: kvm Assignee: virtualization_kvm@xxxxxxxxxxxxxxxxxxxx Reporter: pengfei.xu@xxxxxxxxx Regression: No Created attachment 301563 --> https://bugzilla.kernel.org/attachment.cgi?id=301563&action=edit Host_kernel_missing_endbr_from_kvm I used syzkaller and found the "Missing ENDBR: andw_ax_dx+0x0/0x10 [kvm]" BUG in the host. Platform: ADL-P/TGL-U or TGL-H Host Kernel: v5.19 mainline kernel with kernel IBT Guest kernel: v5.19 mainline kernel without kernel IBT, moved kconfig "CONFIG_X86_KERNEL_IBT=y". Host kernel enabled kernel IBT by adding the KCONFIG "CONFIG_X86_KERNEL_IBT=y". In syzkaller guest kernel, guest didn't enable kernel IBT and used 5.19 mainline kernel also. After launched the syzkaller test about 2 hours. There was "Missing ENDBR: andw_ax_dx+0x0/0x10 [kvm]" info generated in host kernel. [ 0.000000] Linux version 5.19.0-m2 (root@xxxxxxxxxxxxxxxx) (gcc (GCC) 8.5.0 20210514 (Red Hat 8.5.0-10), GNU ld version 2.36.1-2.el8) #1 SMP PREEMPT_DYNAMIC Mon Aug 1 14:23:55 CST 2022 [ 5048.057266] traps: Missing ENDBR: andw_ax_dx+0x0/0x10 [kvm] [ 5048.057440] ------------[ cut here ]------------ [ 5048.057457] kernel BUG at arch/x86/kernel/traps.c:253! Host dmesg was in attached. Thanks! -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.
