This is pretty strange, could someone explain it to me? Wasn't mwait
bugged in ryzen?
Tired of the random freezes, I tried this:
--- ./arch/x86/kernel/acpi/cstate.c.orig 2018-10-22 08:37:37.000000000 +0200
+++ ./arch/x86/kernel/acpi/cstate.c 2019-03-20 19:26:45.261101857 +0100
@@ -86,6 +86,7 @@ static long acpi_processor_ffh_cstate_pr
num_cstate_subtype = edx_part & MWAIT_SUBSTATE_MASK;
retval = 0;
+#if 0
/* If the HW does not support any sub-states in this C-state */
if (num_cstate_subtype == 0) {
pr_warn(FW_BUG "ACPI MWAIT C-state 0x%x not supported by HW
(0x%x)\n",
@@ -93,6 +94,7 @@ static long acpi_processor_ffh_cstate_pr
retval = -1;
goto out;
}
+#endif
/* mwait ecx extensions INTERRUPT_BREAK should be supported for C2/C3 */
if (!(ecx & CPUID5_ECX_EXTENSIONS_SUPPORTED) ||
And I don't have any freeze since 3 days...
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https://bugs.launchpad.net/bugs/1690085
Title:
Ryzen 1800X freeze - rcu_sched detected stalls on CPUs/tasks
Status in Linux:
Confirmed
Status in linux package in Ubuntu:
Confirmed
Bug description:
Hi,
We aregetting various kernel crash on a pretty new config.
We're using Ryzen 1800X CPU with X370 Gaming Pro Carbon MB (7A32V1) using
latest BIOS available (1.52)
We are running Ubuntu 17.04 (amd64), we've tried different kernel version,
native one and releases from http://kernel.ubuntu.com/~kernel-ppa/mainline/ too.
Tested kernel version:
native 17.04 kernel
4.10.15
Issues are the same, we're getting random freeze on the machine.
Here is kern.log entry when happening :
May 10 22:41:56 dev2 kernel: [24366.186246] INFO: rcu_sched detected stalls
on CPUs/tasks:
May 10 22:41:56 dev2 kernel: [24366.187618] 0-...: (1 GPs behind)
idle=49b/1/0 softirq=28561/28563 fqs=913449
May 10 22:41:56 dev2 kernel: [24366.188977] (detected by 12, t=1860207
jiffies, g=10001, c=10000, q=4656)
May 10 22:41:56 dev2 kernel: [24366.190344] Task dump for CPU 0:
May 10 22:41:56 dev2 kernel: [24366.190345] swapper/0 R running task
0 0 0 0x00000008
May 10 22:41:56 dev2 kernel: [24366.190348] Call Trace:
May 10 22:41:56 dev2 kernel: [24366.190354] ? native_safe_halt+0x6/0x10
May 10 22:41:56 dev2 kernel: [24366.190355] ? default_idle+0x20/0xd0
May 10 22:41:56 dev2 kernel: [24366.190358] ? arch_cpu_idle+0xf/0x20
May 10 22:41:56 dev2 kernel: [24366.190360] ? default_idle_call+0x23/0x30
May 10 22:41:56 dev2 kernel: [24366.190362] ? do_idle+0x16f/0x200
May 10 22:41:56 dev2 kernel: [24366.190364] ? cpu_startup_entry+0x71/0x80
May 10 22:41:56 dev2 kernel: [24366.190366] ? rest_init+0x77/0x80
May 10 22:41:56 dev2 kernel: [24366.190368] ? start_kernel+0x464/0x485
May 10 22:41:56 dev2 kernel: [24366.190369] ?
early_idt_handler_array+0x120/0x120
May 10 22:41:56 dev2 kernel: [24366.190371] ?
x86_64_start_reservations+0x24/0x26
May 10 22:41:56 dev2 kernel: [24366.190372] ? x86_64_start_kernel+0x14d/0x170
May 10 22:41:56 dev2 kernel: [24366.190373] ? start_cpu+0x14/0x14
May 10 22:44:56 dev2 kernel: [24546.188093] INFO: rcu_sched detected stalls
on CPUs/tasks:
May 10 22:44:56 dev2 kernel: [24546.189461] 0-...: (1 GPs behind)
idle=49b/1/0 softirq=28561/28563 fqs=935027
May 10 22:44:56 dev2 kernel: [24546.190823] (detected by 14, t=1905212
jiffies, g=10001, c=10000, q=4740)
May 10 22:44:56 dev2 kernel: [24546.192191] Task dump for CPU 0:
May 10 22:44:56 dev2 kernel: [24546.192192] swapper/0 R running task
0 0 0 0x00000008
May 10 22:44:56 dev2 kernel: [24546.192195] Call Trace:
May 10 22:44:56 dev2 kernel: [24546.192199] ? native_safe_halt+0x6/0x10
May 10 22:44:56 dev2 kernel: [24546.192201] ? default_idle+0x20/0xd0
May 10 22:44:56 dev2 kernel: [24546.192203] ? arch_cpu_idle+0xf/0x20
May 10 22:44:56 dev2 kernel: [24546.192204] ? default_idle_call+0x23/0x30
May 10 22:44:56 dev2 kernel: [24546.192206] ? do_idle+0x16f/0x200
May 10 22:44:56 dev2 kernel: [24546.192208] ? cpu_startup_entry+0x71/0x80
May 10 22:44:56 dev2 kernel: [24546.192210] ? rest_init+0x77/0x80
May 10 22:44:56 dev2 kernel: [24546.192211] ? start_kernel+0x464/0x485
May 10 22:44:56 dev2 kernel: [24546.192213] ?
early_idt_handler_array+0x120/0x120
May 10 22:44:56 dev2 kernel: [24546.192214] ?
x86_64_start_reservations+0x24/0x26
May 10 22:44:56 dev2 kernel: [24546.192215] ? x86_64_start_kernel+0x14d/0x170
May 10 22:44:56 dev2 kernel: [24546.192217] ? start_cpu+0x14/0x14
Depending on the kernel version, we've got NMI watchdog errors related to CPU
stuck (mentioning the CPU core id, which is random).
Crash is happening randomly, but in general after some hours (3-4h).
Now, we've installed kernel 4.11.0-041100-generic #201705041534 this morning
and waiting for crash...
For now, the machine is not "used", at least, it's not CPU stressed...
Thanks
---
ApportVersion: 2.20.4-0ubuntu4
Architecture: amd64
DistroRelease: Ubuntu 17.04
InstallationDate: Installed on 2017-05-09 (1 days ago)
InstallationMedia: Ubuntu-Server 17.04 "Zesty Zapus" - Release amd64
(20170412)
Package: linux (not installed)
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=fr_FR.UTF-8
SHELL=/bin/bash
Tags: zesty
Uname: Linux 4.11.0-041100-generic x86_64
UnreportableReason: The running kernel is not an Ubuntu kernel
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
_MarkForUpload: True
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