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List:       freebsd-hackers
Subject:    kernel panic in igb driver
From:       Nomad Esst via freebsd-hackers <freebsd-hackers () freebsd ! org>
Date:       2015-11-29 5:20:33
Message-ID: 346084679.550463.1448774433434.JavaMail.yahoo () mail ! yahoo ! com
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During some performance tests and while a voice call was going through an igb interface, we attempt to disconnect and connect the cable. After the interface comes up this kernel panic occurs:
Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address   = 0xc
fault code              = supervisor read data, page not present
instruction pointer     = 0x20:0xffffffff80e189b9
stack pointer           = 0x28:0xffffff80ba3fe640
frame pointer           = 0x28:0xffffff80ba3feb20
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         = 12 (irq268: +)
[ thread pid 12 tid 100114 ]
Stopped at      igb_start_locked+0x639:       movzbl  0xc(%rbx),%esi
Thanks in advance.


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