[Bug 211771] kernel panic when loading ix interface ( was kernel panic on boot PowerEdge R720xd )

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=211771

Michael Galati <sfilter at sulfegate.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |sfilter at sulfegate.org

--- Comment #11 from Michael Galati <sfilter at sulfegate.org> ---
This is still a thing on 11-STABLE (r321894) / ix 3.2.12-k.  Instant panic just
when running "ifconfig ix0 up" (same deal with ix1 as well).

Snippet from pciconf -lv:

ix0 at pci0:4:0:0: class=0x020000 card=0xa21f8086 chip=0x10f18086 rev=0x01
hdr=0x00
    vendor     = 'Intel Corporation'
    device     = '82598EB 10-Gigabit AF Dual Port Network Connection'
    class      = network
    subclass   = ethernet
ix1 at pci0:4:0:1: class=0x020000 card=0xa21f8086 chip=0x10f18086 rev=0x01
hdr=0x00
    vendor     = 'Intel Corporation'
    device     = '82598EB 10-Gigabit AF Dual Port Network Connection'
    class      = network
    subclass   = ethernet

Not sure what you would want to see to debug.  I have a core if that helps. 
Some output from kgdb below:

Fatal trap 12: page fault while in kernel mode
cpuid = 4; apic id = 04
fault virtual address   = 0x0
fault code              = supervisor read instruction, page not present
instruction pointer     = 0x20:0x0
stack pointer           = 0x28:0xfffffe000037f9b8
frame pointer           = 0x28:0xfffffe000037f9e0
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 (ix1 linkq)
trap number             = 12
panic: page fault
cpuid = 4
KDB: stack backtrace:
#0 0xffffffff805f43d7 at kdb_backtrace+0x67
#1 0xffffffff805b2186 at vpanic+0x186
#2 0xffffffff805b1ff3 at panic+0x43
#3 0xffffffff8095f4a2 at trap_fatal+0x322
#4 0xffffffff8095f4f9 at trap_pfault+0x49
#5 0xffffffff8095ed36 at trap+0x286
#6 0xffffffff80944db1 at calltrap+0x8
#7 0xffffffff80605237 at taskqueue_run_locked+0x127
#8 0xffffffff806063d8 at taskqueue_thread_loop+0xc8
#9 0xffffffff80575dc5 at fork_exit+0x85
#10 0xffffffff809452ee at fork_trampoline+0xe
Uptime: 1m28s
Dumping 2385 out of 65475 MB: (CTRL-C to abort)
..1%..11%..21%..31%..41%..51%..61%..71%..81%..91%
[snip]
#0  doadump (textdump=<value optimized out>) at pcpu.h:222
222             __asm("movq %%gs:%1,%0" : "=r" (td)
(kgdb) backtrace 
#0  doadump (textdump=<value optimized out>) at pcpu.h:222
#1  0xffffffff805b1d01 in kern_reboot (howto=260)
    at /usr/src/sys/kern/kern_shutdown.c:366
#2  0xffffffff805b21c0 in vpanic (fmt=<value optimized out>, 
    ap=<value optimized out>) at /usr/src/sys/kern/kern_shutdown.c:759
#3  0xffffffff805b1ff3 in panic (fmt=<value optimized out>)
    at /usr/src/sys/kern/kern_shutdown.c:690
#4  0xffffffff8095f4a2 in trap_fatal (frame=0xfffffe000037f8f0, eva=0)
    at /usr/src/sys/amd64/amd64/trap.c:801
#5  0xffffffff8095f4f9 in trap_pfault (frame=0xfffffe000037f8f0, usermode=0)
    at pcpu.h:222
#6  0xffffffff8095ed36 in trap (frame=0xfffffe000037f8f0)
    at /usr/src/sys/amd64/amd64/trap.c:421
#7  0xffffffff80944db1 in calltrap ()
    at /usr/src/sys/amd64/amd64/exception.S:236
#8  0x0000000000000000 in ?? ()
Current language:  auto; currently minimal
(kgdb)

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