[Bug 229167] [Hyper-V] [Jun 19, 2018] Recently FreeBSD VM panics during boot-up, especially with Mellanox VF configured

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Sun Jul 15 19:16:30 UTC 2018


https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=229167

--- Comment #23 from pete at twisted.org.uk ---
(In reply to Dexuan Cui from comment #21)

So, I rebuilt with CURRENT, and it booted fine on UFS. Then I rebooted it a
couple of times, and the third time it did this:

mlxen0: Ethernet address: 00:0d:3a:2f:f9:61
<4>mlx4_en: mlx4_core0: Port 1: Using 4 TX rings
mlxen0: link state changed to DOWN
<4>mlx4_en: mlx4_core0: Port 1: Using 4 RX rings
<4>mlx4_en: mlxen0: Using 4 TX rings
hn0: link state changed to DOWN
<4>mlx4_en: mlxen0: Using 4 RX rings
<4>mlx4_en: mlxen0: Initializing port


Fatal trap 12: page fault while in kernel mode
cpuid = 2; apic id = 02
fault virtual address   = 0x1d8
fault code              = supervisor read data, page not present
instruction pointer     = 0x20:0xffffffff80c6a3ea
stack pointer           = 0x28:0xfffffe00004bb950
frame pointer           = 0x28:0xfffffe00004bb960
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 (vmbusdev)
[ thread pid 0 tid 100105 ]
Stopped at      vrefact+0xa:    cmpl    $0x4,ll+0x1b7(%r14)
db>

Hmmmm... thats the same (UFS based) machine being rebooted, no changes, so it
look unpredictable :-( Am going to try it again and also try with ZFS if I can,
but it does look like it shows up in CURRENT, just not every time.

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