Re: panic when loading mlxen

Hans Petter Selasky Sat, 03 Feb 2018 01:41:24 -0800

On 02/03/18 08:34, Daniel Braniss wrote:

On 2 Feb 2018, at 20:47, K. Macy <km...@freebsd.org> wrote:

That's odd since it doesn't use any of taskqgroup stuff. I take it you
can't get a core?


no core but some more info:
db> bt
Tracing pid 0 tid 100000 td 0xffffffff81e0e500
taskqgroup_attach_cpu() at taskqgroup_attach_cpu+0x4f/frame 0xffffffff822e4c30
tasklet_subsystem_init() at tasklet_subsystem_init+0xde/frame 0xffffffff822e4c90
mi_startup() at mi_startup+0x9c/frame 0xffffffff822e4cb0
btext() at btext+0x2c


Also, why are you loading it in loader.conf (slower) as opposed to rc.conf?

sometimes it’s booted diskless, and the driver is needed early.
and btw, this box doesn’t even have a mellanox card.

-M



On Fri, Feb 2, 2018 at 4:46 AM, Daniel Braniss <da...@cs.huji.ac.il> wrote:

with latest stable (r328769) when I have
        mlxen_load=“YES”
in my loader.conf it panics:

KDB: debugger backends: ddbsize 0x4638 at 0x22d6000                             
f
KDB: current backend: ddb
Copyright (c) 1992-2018 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
       The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 11.1-STABLE #18: Fri Feb  2 10:46:12 IST 2018
   danny@pe-44:/home/obj/pe-44/net/rnd/r+d/stable/11/sys/HUJI amd64
FreeBSD clang version 5.0.1 (tags/RELEASE_501/final 320880) (based on LLVM 
5.0.1)
VT(vga): resolution 640x480
CPU: Intel(R) Xeon(R) CPU           E5507  @ 2.27GHz (2261.04-MHz K8-class CPU)
Origin="GenuineIntel"  Id=0x106a5  Family=0x6  Model=0x1a  Stepping=5
Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,C>
Features2=0x9ce3bd<SSE3,DTES64,MON,DS_CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,DCA>
AMD Features=0x28100800<SYSCALL,NX,RDTSCP,LM>
AMD Features2=0x1<LAHF>
VT-x: PAT,HLT,MTF,PAUSE,EPT,VPID
TSC: P-state invariant, performance statistics
real memory  = 25769803776 (24576 MB)
avail memory = 24931561472 (23776 MB)
Event timer "LAPIC" quality 100
ACPI APIC Table: <DELL   PE_SC3  >
FreeBSD/SMP: Multiprocessor System Detected: 8 CPUs
FreeBSD/SMP: 2 package(s) x 4 core(s)
ioapic1: Changing APIC ID to 1
ioapic0 <Version 2.0> irqs 0-23 on motherboard
ioapic1 <Version 2.0> irqs 32-55 on motherboard


Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 10
fault virtual address   = 0x1818
fault code              = supervisor write data, page not present
instruction pointer     = 0x20:0xffffffff80ad427f
stack pointer           = 0x28:0xffffffff822e3be0
frame pointer           = 0x28:0xffffffff822e3c30
code segment            = base 0x0, limit 0xfffff, type 0x1b
                       = DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 0
current process         = 0 (swapper)
[ thread pid 0 tid 100000 ]
Stopped at      taskqgroup_attach_cpu+0x4f:     lock cmpxchgq   %r12,(%rdi)

Hi,

It should work if you "kldload mlxen" after boot or add it to kld_listin /etc/rc.conf. Looks like I have one more combination to test afterthe LinuxKPI upgrade in 11-stable. Thanks for notifying me.


--HPS
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