audit: type=1400 audit(1588062375.069:8): avc:  denied  { execmem } for  pid=6436 comm="syz-executor314" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1
L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/l1tf.html for details.
faulting far call emulation tainted memory
------------[ cut here ]------------
WARNING: CPU: 0 PID: 6441 at arch/x86/kvm/x86.c:8108 kvm_arch_vcpu_ioctl_run.cold+0x11/0x18 arch/x86/kvm/x86.c:8108
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 6441 Comm: syz-executor314 Not tainted 4.19.118-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x188/0x20d lib/dump_stack.c:118
 panic+0x26a/0x50e kernel/panic.c:186
 __warn.cold+0x20/0x46 kernel/panic.c:541
 report_bug+0x262/0x2a0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 fixup_bug arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1037
RIP: 0010:kvm_arch_vcpu_ioctl_run.cold+0x11/0x18 arch/x86/kvm/x86.c:8108
Code: 79 ff ff e8 4e f2 59 00 48 c7 c7 60 47 82 87 e8 4b 11 45 00 e9 7d 87 ff ff e8 38 f2 59 00 48 c7 c7 00 2d 82 87 e8 35 11 45 00 <0f> 0b e9 8b c5 ff ff e8 20 f2 59 00 48 c7 c7 00 2d 82 87 e8 1d 11
RSP: 0018:ffff8880a760fb60 EFLAGS: 00010282
RAX: 0000000000000024 RBX: ffff88809aa3d000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8152da91 RDI: ffffed1014ec1f5e
RBP: ffff8880a6ab0040 R08: 0000000000000024 R09: ffffed1015cc5079
R10: ffffed1015cc5078 R11: ffff8880ae6283c7 R12: 0000000000000001
R13: ffff8880a6ab045c R14: 0000000000000000 R15: ffff8880a6ab0118
 kvm_vcpu_ioctl+0x493/0xe20 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2667
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:501 [inline]
 do_vfs_ioctl+0xcda/0x12e0 fs/ioctl.c:688
 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705
 __do_sys_ioctl fs/ioctl.c:712 [inline]
 __se_sys_ioctl fs/ioctl.c:710 [inline]
 __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x449c09
Code: e8 8c b0 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 4b 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f76ee30ece8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000006dfc58 RCX: 0000000000449c09
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005
RBP: 00000000006dfc50 R08: 00007f76ee30f700 R09: 0000000000000000
R10: 00007f76ee30f700 R11: 0000000000000246 R12: 00000000006dfc5c
R13: 00007fffd97a3f1f R14: 00007f76ee30f9c0 R15: 20c49ba5e353f7cf
Kernel Offset: disabled
Rebooting in 86400 seconds..