On Thu, Jan 04, 2018 at 11:20:29AM +0100, Thomas Zeitlhofer wrote:
> On Thu, Jan 04, 2018 at 02:59:06AM +0100, Thomas Zeitlhofer wrote:
> > Hello,
> >
> > on an Ivybridge CPU, I get with 4.14.11:
> >
> > BUG: using smp_processor_id() in preemptible [00000000] code:
> > ovsdb-server/4510
> > caller is native_flush_tlb_single+0x57/0xc0
> > CPU: 3 PID: 4510 Comm: ovsdb-server Not tainted
> > 4.14.11-kvm-00434-gcd0b8eb84f5c #3
> > Hardware name: MSI MS-7798/B75MA-P45 (MS-7798), BIOS V1.9 09/30/2013
> > Call Trace:
> > dump_stack+0x5c/0x86
> > check_preemption_disabled+0xdd/0xe0
> > native_flush_tlb_single+0x57/0xc0
> > ? __set_pte_vaddr+0x2d/0x40
> > __set_pte_vaddr+0x2d/0x40
> > set_pte_vaddr+0x2f/0x40
> > cea_set_pte+0x30/0x40
> > ds_update_cea.constprop.4+0x4d/0x70
> > reserve_ds_buffers+0x159/0x410
> > ? wp_page_copy+0x36d/0x6a0
> > x86_reserve_hardware+0x150/0x160
> > x86_pmu_event_init+0x3e/0x1f0
> > perf_try_init_event+0x69/0x80
> > perf_event_alloc+0x652/0x740
> > SyS_perf_event_open+0x3f6/0xd60
> > do_syscall_64+0x5c/0x190
> > entry_SYSCALL64_slow_path+0x25/0x25
> > RIP: 0033:0x74a1d94580b9
> > RSP: 002b:00007fff0c01d5d8 EFLAGS: 00000206 ORIG_RAX: 000000000000012a
> > RAX: ffffffffffffffda RBX: 00007fff0c01d7b0 RCX: 000074a1d94580b9
> > RDX: 00000000ffffffff RSI: 0000000000000000 RDI: 00007fff0c01d5e0
> > RBP: 0000000000000000 R08: 0000000000000000 R09: 0000007000000000
> > R10: 00000000ffffffff R11: 0000000000000206 R12: 0000000000000008
> > R13: 0000000000000000 R14: 00007fff0c01d790 R15: 00005df43a799600
> >
> > This does not show up when booting with pti=off.
> >
> > Maybe it is related to the issue that is fixed for the upcoming 4.4.110
> > release by https://lkml.org/lkml/2018/1/3/692
I don't understand this link. The 4.4 and 4.9 backports are much
different than the 4.14 tree.
> JFYI, the very same kernel does not show this issue on a Haswell CPU.
I have now queued up a bunch of patches that are in Linus's tree, can
you test these out as well:
https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-4.14
thanks,
greg k-h
