Date: Tue, 12 Feb 2019 14:53:20 +0000 From: Pete French <petefrench@ingresso.co.uk> To: "Andrey V. Elsukov" <bu7cher@yandex.ru>, freebsd-stable@freebsd.org Subject: Networking panic on 12 - found the cause Message-ID: <cc6e7f23-6dfd-e6f7-b001-288da9edc58c@ingresso.co.uk> In-Reply-To: <4a350f47-eaca-5aca-9268-bf7a6618e71c@yandex.ru> References: <E1gr2IV-000BqA-VD@dilbert.ingresso.co.uk> <4a350f47-eaca-5aca-9268-bf7a6618e71c@yandex.ru>
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I found my panic. If I take everything out of rc.conf and loader.conf
and sysctl.conf and boot the system it works fine when I add an IP
address. If I add this one line to sysctl.conf
net.link.ether.inet.garp_rexmit_count=2
Then I get a panic when I configure the interface:
root@serpentine-passive:~ # ifconfig igb0 inet 10.32.10.4/16 up
Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address = 0x28
fault code = supervisor read data, page not present
instruction pointer = 0x20:0xffffffff80c987f1
stack pointer = 0x28:0xfffffe00004d5730
frame pointer = 0x28:0xfffffe00004d5750
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 (swi4: clock (0))
trap number = 12
panic: page fault
cpuid = 0
time = 1549981620
KDB: stack backtrace:
#0 0xffffffff80bdfdc7 at kdb_backtrace+0x67
#1 0xffffffff80b93fa3 at vpanic+0x1a3
#2 0xffffffff80b93df3 at panic+0x43
#3 0xffffffff8106a7bf at trap_fatal+0x35f
#4 0xffffffff8106a819 at trap_pfault+0x49
#5 0xffffffff81069e3e at trap+0x29e
#6 0xffffffff810450c5 at calltrap+0x8
#7 0xffffffff80c986f6 at ether_output+0x6b6
#8 0xffffffff80d03354 at arprequest+0x4c4
#9 0xffffffff80d0515c at garp_rexmit+0xbc
#10 0xffffffff80bade19 at softclock_call_cc+0x129
#11 0xffffffff80bae2f9 at softclock+0x79
#12 0xffffffff80b57c57 at ithread_loop+0x1a7
#13 0xffffffff80b54da2 at fork_exit+0x82
#14 0xffffffff810460be at fork_trampoline+0xe
Uptime: 2m6s
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