if_gif/if_bridge problem

Thu Oct 23 19:56:56 UTC 2008

Eugene Grosbein wrote:
> On Thu, Sep 04, 2008 at 11:49:06AM -0400, Boris Kochergin wrote:
>
>   
>> Ahoy. I've been using the patch for a while, and, recently, when the 
>> load on the wireless network I needed it for has increased, I've started 
>> getting kernel panics that I think the patch is responsible for. The 
>> panics are usually foreshadowed by messages in the style of "Sep  3 
>> 11:34:14 unique kernel: delayed m_pullup, m->len: 22  off: 38333  p: 97" 
>> in the kernel buffer. I like to think that I've eliminated the 
>> possibility of bad hardware by changing the motherboard, memory, and 
>> Ethernet controllers in the machine, and have tried both Eugene's 
>> original patchset and the one that was committed to 7-STABLE, with the 
>> same ill effects. Any ideas about what might be wrong, or shall I set 
>> about getting a backtrace? Thanks.
>>     
>
> Yes, you should. And I think you no more need my patches after
> Andrew's fixes to gif(4). But if you need my changes to lagg(4),
> you should now use version corrected to apply to recent RELENG_7:
> ftp://www.kuzbass.ru/pub/freebsd/lagg-0.2.tgz
>
> There were no functional changes, only context changes after Anrew's commit.
>
> Eugene Grosbein
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>   

Pardon the delay, but here it is. Let me know if I can provide anything 
else.

Fatal trap 12: page fault while in kernel mode
cpuid = 1; apic id = 01
fault virtual address   = 0xc
fault code              = supervisor read, page not present
instruction pointer     = 0x20:0xc05bfb83
stack pointer           = 0x28:0xe9f3f67c
frame pointer           = 0x28:0xe9f3f6a4
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, def32 1, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 0
current process         = 25 (irq18: xl0)
trap number             = 12
panic: page fault
cpuid = 1
Uptime: 20h30m4s
Physical memory: 2551 MB
Dumping 325 MB: 310 294 278 262 246 230 214 198 182 166 150 134 118 102 
86 70 54 38 22 6

#0  doadump () at /usr/src/sys/kern/kern_shutdown.c:241
241             dumptid = curthread->td_tid;
(kgdb) where
#0  doadump () at /usr/src/sys/kern/kern_shutdown.c:241
#1  0xc05583ef in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:409
#2  0xc0558861 in panic (fmt=Could not find the frame base for "panic".
) at /usr/src/sys/kern/kern_shutdown.c:563
#3  0xc07c033d in trap_fatal (frame=0xe9f3f63c, eva=12) at 
/usr/src/sys/i386/i386/trap.c:899
#4  0xc07bfee0 in trap_pfault (frame=0xe9f3f63c, usermode=0, eva=12) at 
/usr/src/sys/i386/i386/trap.c:812
#5  0xc07bf79d in trap (frame=0xe9f3f63c) at 
/usr/src/sys/i386/i386/trap.c:490
#6  0xc079ed4b in calltrap () at /usr/src/sys/i386/i386/exception.s:139
#7  0xc05bfb83 in m_copym (m=0x0, off0=1500, len=20, wait=1) at 
/usr/src/sys/kern/uipc_mbuf.c:538
#8  0xc065c536 in ip_fragment (ip=0xc60fabe8, m_frag=0xe9f3f7a8, 
mtu=1500, if_hwassist_flags=0, sw_csum=769) at 
/usr/src/sys/netinet/ip_output.c:726
#9  0xc065bf35 in ip_output (m=0xc60fab00, opt=0x0, ro=0xc589dd24, 
flags=0, imo=0x0, inp=0x0) at /usr/src/sys/netinet/ip_output.c:565
#10 0xc064c431 in in_gif_output (ifp=0xc58a9000, family=18, 
m=0xc60fab00) at /usr/src/sys/netinet/in_gif.c:228
#11 0xc06321c3 in gif_output (ifp=0xc58a9000, m=0xc60f9900, 
dst=0xc58b52a0, rt=0x0) at /usr/src/sys/net/if_gif.c:455
#12 0xc0631e29 in gif_start (ifp=0xc58a9000) at 
/usr/src/sys/net/if_gif.c:352
#13 0xc06297a9 in bridge_enqueue (sc=0xc58d6600, dst_ifp=0xc58a9000, 
m=0x0) at /usr/src/sys/net/if_bridge.c:1714
#14 0xc062b80e in bridge_broadcast (sc=0xc58d6600, src_if=0xc58a3400, 
m=0xc60f9900, runfilt=1) at /usr/src/sys/net/if_bridge.c:2394
#15 0xc062a5e4 in bridge_forward (sc=0xc58d6600, sbif=0xc56f3600, 
m=0xc60f9900) at /usr/src/sys/net/if_bridge.c:2018
#16 0xc062af00 in bridge_input (ifp=0xc58a3400, m=0xc614e700) at 
/usr/src/sys/net/if_bridge.c:2189
#17 0xc06324dd in gif_input (m=0xc614e700, af=18, ifp=0xc58a3400) at 
/usr/src/sys/net/if_gif.c:564
#18 0xc064c89e in in_gif_input (m=0xc614e700, off=20) at 
/usr/src/sys/netinet/in_gif.c:326
#19 0xc0653f85 in encap4_input (m=0xc614e700, off=20) at 
/usr/src/sys/netinet/ip_encap.c:191
#20 0xc065819f in ip_input (m=0xc614e700) at 
/usr/src/sys/netinet/ip_input.c:665
#21 0xc06346ba in netisr_dispatch (num=2, m=0xc614e700) at 
/usr/src/sys/net/netisr.c:185
#22 0xc0630918 in ether_demux (ifp=0xc56bc000, m=0xc614e700) at 
/usr/src/sys/net/if_ethersubr.c:834
#23 0xc06306e2 in ether_input (ifp=0xc56bc000, m=0xc614e700) at 
/usr/src/sys/net/if_ethersubr.c:692
#24 0xc0704874 in xl_rxeof (sc=0xc56ed000) at /usr/src/sys/pci/if_xl.c:2062
#25 0xc070531e in xl_intr (arg=0xc56ed000) at /usr/src/sys/pci/if_xl.c:2298
#26 0xc05328a0 in ithread_execute_handlers (p=0xc56ec2ac, ie=0xc55e3d00) 
at /usr/src/sys/kern/kern_intr.c:1036
#27 0xc0532a63 in ithread_loop (arg=0xc56f2430) at 
/usr/src/sys/kern/kern_intr.c:1121
#28 0xc0530b8c in fork_exit (callout=0xc05329e0 <ithread_loop>, 
arg=0xc56f2430, frame=0xe9f3fd38) at /usr/src/sys/kern/kern_fork.c:781
#29 0xc079edc0 in fork_trampoline () at 
/usr/src/sys/i386/i386/exception.s:205