GENERIC crash 11.3-PRERELEASE (i386)

Wed Jul 10 12:52:59 UTC 2019

Hello Konstantin,

the 'svn' output:

*****
root at blnn719x - /usr/src
2052 # svn st
?       sys/i386/conf/BLNN719X

root at blnn719x - /usr/src
2053 # svn info
Path: .
Working Copy Root Path: /usr/src
URL: https://svn.freebsd.org/base/stable/11
Relative URL: ^/stable/11
Repository Root: https://svn.freebsd.org/base
Repository UUID: ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
Revision: 349719
Node Kind: directory
Schedule: normal
Last Changed Author: delphij
Last Changed Rev: 349718
Last Changed Date: 2019-07-04 09:32:25 +0200 (Thu, 04 Jul 2019)
*****

The last lines of the verbose boot messages can be found here:

https://www.dropbox.com/preview/FreeBSD-stable/Boot_verbose.jpg

Thank you very much so far

Matthias

Am 05.07.2019 um 21:11 schrieb Konstantin Belousov:
> On Fri, Jul 05, 2019 at 11:12:29AM +0000, Schuendehuette, Matthias wrote:
>> Hello Konstantin,
>>
>> ***
>> Obviously Outlook has destroyed my last reply - here again:
>> ***
>>
>> I did what you suggested: deleted the content of /usr/src and 'svn co'
>> the 11-STABLE sources again.
>>
>> I investigated the three
>> source files mentioned below and confirmed the 'svn diff' results:
>>
>> "hw_mds_recalculate();" has been removed from
>>
>> 	sys/amd64/amd64/initcpu.c	and
>> 	sys/i386/i386/initcpu.c
>>
>>
>> and:
>>
>> "static void
>>   hw_mds_recalculate_boot(void *arg __unused)
>>   {
>>
>>         hw_mds_recalculate();
>>   }
>>   SYSINIT(mds_recalc, SI_SUB_SMP, SI_ORDER_ANY, hw_mds_recalculate_boot, NULL);"
>>
>> has been inserted into 'sys/x86/x86/cpu_machdep.c'
>>
>>
>> That's still the case for 'r349719'. Also remains true that a kernel of
>> 'r349719' crashes as described earlier.
> Ok, show me
> 1. svn st and svn info output of the checkout you use
> 2. While kernel messages with verbose boot enabled, for your machine, and
>     the kernel which fails to boot.
>>
>> With best regards and have a nice weekend
>>
>> Matthias Schuendehuette
>>
>>
>>
>>
>> -----Ursprüngliche Nachricht-----
>> Von: Konstantin Belousov<kostikbel at gmail.com>  
>> Gesendet: Mittwoch, 3. Juli 2019 15:55
>> An: Schuendehuette, Matthias (LDA IT PLM)<matthias.schuendehuette at siemens.com>
>> Cc: 'freebsd-stable at freebsd.org'<freebsd-stable at freebsd.org>; Osipov, Michael (LDA IT PLM)<michael.osipov at siemens.com>
>> Betreff: Re: GENERIC crash 11.3-PRERELEASE (i386)
>>
>> On Wed, Jul 03, 2019 at 08:42:21AM +0000, Schuendehuette, Matthias wrote:
>>> Hello Konstantin,
>>>
>>> I did some research regarding the kernel crash with the following results>
>>>
>>> 1) Last working kernel is:
>>>
>>> 	"FreeBSD 11.3-BETA1 (BLNN719X) #8 r348361: Wed Jul  3 09:30:17 CEST 2019"
>>>
>>> 1a) DDB-Backtrace of the crashing kernel r348362 can be seen on "Boot_BT.jpg"
>>>      	in the dropbox directory
>>> 	"https://www.dropbox.com/sh/buzxekimo2h2r67/AADpUvLndhm2SHa5t9s9Ckksa?dl=0"
>>>
>>>
>>> 2) Source code revision is:
>>>
>>> root at blnn719x - /usr/src
>>> 2056 # svn info
>>> Path: .
>>> Working Copy Root Path: /usr/src
>>> URL:https://svn.freebsd.org/base/stable/11
>>> Relative URL: ^/stable/11
>>> Repository Root:https://svn.freebsd.org/base
>>> Repository UUID: ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
>>> Revision: 348361
>>> Node Kind: directory
>>> Schedule: normal
>>> Last Changed Author: jkim
>>> Last Changed Rev: 348343
>>> Last Changed Date: 2019-05-29 02:00:52 +0200 (Wed, 29 May 2019)
>>>
>>>
>>> 3) Diff to next revision:
>>>
>>> root at blnn719x - /usr/src
>>> 2057 # svn diff -r 348362
>>> Index: sys/amd64/amd64/initcpu.c
>>> ===================================================================
>>> --- sys/amd64/amd64/initcpu.c   (revision 348362)
>>> +++ sys/amd64/amd64/initcpu.c   (working copy)
>>> @@ -247,6 +247,7 @@
>>>          }
>>>          hw_ibrs_recalculate();
>>>          hw_ssb_recalculate(false);
>>> +       hw_mds_recalculate();
>>>          switch (cpu_vendor_id) {
>>>          case CPU_VENDOR_AMD:
>>>                  init_amd();
>>> Index: sys/i386/i386/initcpu.c
>>> ===================================================================
>>> --- sys/i386/i386/initcpu.c     (revision 348362)
>>> +++ sys/i386/i386/initcpu.c     (working copy)
>>> @@ -769,6 +769,7 @@
>>>                  elf32_nxstack = 1;
>>>          }
>>>   #endif
>>> +       hw_mds_recalculate();
>>>          if ((amd_feature & AMDID_RDTSCP) != 0 ||
>>>              (cpu_stdext_feature2 & CPUID_STDEXT2_RDPID) != 0)
>>>                  wrmsr(MSR_TSC_AUX, PCPU_GET(cpuid));
>>> Index: sys/x86/x86/cpu_machdep.c
>>> ===================================================================
>>> --- sys/x86/x86/cpu_machdep.c   (revision 348362)
>>> +++ sys/x86/x86/cpu_machdep.c   (working copy)
>>> @@ -1118,14 +1118,6 @@
>>>          }
>>>   }
>>>
>>> -static void
>>> -hw_mds_recalculate_boot(void *arg __unused)
>>> -{
>>> -
>>> -       hw_mds_recalculate();
>>> -}
>>> -SYSINIT(mds_recalc, SI_SUB_SMP, SI_ORDER_ANY, hw_mds_recalculate_boot, NULL);
>>> -
>>>   static int
>>>   sysctl_mds_disable_handler(SYSCTL_HANDLER_ARGS)
>>>   {
>>> Index: .
>>> ===================================================================
>>> --- .   (revision 348362)
>>> +++ .   (working copy)
>>>
>>> Property changes on: .
>>> ___________________________________________________________________
>>> Modified: svn:mergeinfo
>>> ## -0,1 +0,0 ##
>>>     Reverse-merged /head:r348075
>>>
>>>
>>>
>>> Somewhere here is the problem...
>> Definitely, there is some problem, but I doubt that it is due to the
>> revision in the svn. The diff above is the reverse of the stable/11
>> r348362 that was committed on 2019-05-29. Indeed, the missed (or
>> reverted) r348362 would cause exactly the symptoms you described with
>> failing AP startup.
>>
>> I have no idea why do you have the change reverted with merge info, in
>> your sources.  Clean up and retry with pristine tree.
>>
>>>
>>>
>>> with best regards
>>> Matthias Schündehütte
>>>