* Wanpeng Li <kernellwp@xxxxxxxxx> wrote: > Hi Ingo, Thomas, > 2016-06-22 9:28 GMT+08:00 Wanpeng Li <kernellwp@xxxxxxxxx>: > > From: Wanpeng Li <wanpeng.li@xxxxxxxxxxx> > > > > ------------[ cut here ]------------ > > WARNING: CPU: 0 PID: 0 at arch/x86/mm/extable.c:50 ex_handler_rdmsr_unsafe+0x6a/0x70 > > unchecked MSR access error: RDMSR from 0xce > > Modules linked in: > > CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.7.0-rc3+ #1 > > Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 > > 0000000000000000 ffffffff81c03ce0 ffffffff813b3eae ffffffff81c03d30 > > 0000000000000000 ffffffff81c03d20 ffffffff81067181 0000003200000001 > > ffffffff81c03df8 ffffffff8179676c 0000000000000000 ffffffff81fcd2c0 > > Call Trace: > > dump_stack+0x67/0x99 > > __warn+0xd1/0xf0 > > warn_slowpath_fmt+0x4f/0x60 > > ex_handler_rdmsr_unsafe+0x6a/0x70 > > fixup_exception+0x39/0x50 > > do_general_protection+0x93/0x1b0 > > general_protection+0x22/0x30 > > ? cpu_khz_from_msr+0xd8/0x1c0 > > native_calibrate_cpu+0x30/0x5b0 > > tsc_init+0x2b/0x297 > > x86_late_time_init+0xf/0x11 > > start_kernel+0x398/0x451 > > ? set_init_arg+0x55/0x55 > > x86_64_start_reservations+0x2f/0x31 > > x86_64_start_kernel+0xea/0xed > > > > After commit (fc141535ad8 : "x86 tsc_msr: Extend to include Intel Core > > Architecture"), rdmsr MSR_PLATFORM_INFO is used to get maximum non-turbo > > I just saw commit (fc273eeef314c : "x86 tsc_msr: Extend to include > Intel Core Architecture") was merged in tip tree, then this patch is > needed to fix that commit. The bug is reported by LKP several weeks > ago, and kvm maintainer Paolo has already replied "This looks good" to > this patch. Applied, thanks! Ingo -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
