What do you think of the new 3COM cards with X-Jack ?

[Andreas Klemm]

On Sat, Sep 13, 2003 at 08:35:06PM -0400, Matthew N. Dodd wrote:
> On Sun, 14 Sep 2003, Andreas Klemm wrote:
> > It works for me, xl0 card is recognized.
> 
> Great!
> 
> > But during heavy ftp network traffic the LAPTOP panics.

machine paniced 2 times
A) one time after transferring ~90 MB of a ~300 MB large ISO image
B) 2nd time after transferring ~ 8 MB of same large file
C) 3rd time after transferring ~ 6 MB of same large file

In DDB I see using where, that the machine always crashes within
the same functions. DDB tells me:

to B) panic: m_free detected a mbuf double-free
Debugger("panic")
Stopped at   Debugger+0x54:    xchgl   %ebx,in_Debugger.0
db> where
Debugger
panic
m_free
m_freem
ip_input <---------- happens at different functions
...
db> panic
...

to C) panic: m_free detected a mbuf double-free
Debugger("panic")
Stopped at   Debugger+0x54:    xchgl   %ebx,in_Debugger.0
db> where
Debugger
panic
m_free
m_freem
xl_txeof <----------- happens at different functions
xl_intr
cbb_intr
ithread_loop
fork_exit
fork_trampoline
--- trap 0x1, eip = 0, esp = 0xcb042d7c, ebp = 0 ---
db> panic
panic: from debugger
Uptime: 2m55s
Dumping 191M
Dump complete


Let's see what gdb tells me, from panic "B)"
Sorry for case "C)" I didn't have enough space :-(

(kgdb) where

#0 doadump
#1 0x... in boot (howto=260) at ../../../kern/kern_shutdown.c: 372
#2 0x... in panic () at ../../../kern/kern_shutdown.c: 550
#3 0x... in db_panic () at ../../../ddb/db_command.c: 450
#4 0x... in db_command (...) at ../../../ddb/db_command.c: 346
#5 0x... in db_command_loop () at ../../../ddb/db_command.c: 472
#6 0x... in db_trap (type=3, code=0) at ../../../ddb/db_trap.c: 73
#7 0x... in kdb_trap (type=3, code=0, regs=0xcb027bc6)
   at ../../../i386/i386/db_interface.c: 171
#8 0x... in trap (frame=
      {tf_fs = 24, tf_es = -1039597552, tf_ds = 16, tf_edi = 1, tf_esi ) -1070431840, tf_ebp = -889029704, tf_isp = -889029736, tf_ebx = 0, tf_edx = 0, tf_ecx = 32, tf_eax = 18, tf_trapno = 3, tf_err = 0, tf_eip = -1070703196, tf_cs = 8, tf_eflags = 642, tf_esp = -1070363254, tf_ss = -1070440292})
   at ../../../i386/i386/trap.c: 577
#9 0x... in calltrap () at {standard input}: 102
#10 0x... in panic (fmt=0xc03281a0 "m_free detected a mbuf double-freeze")
   at ../../../kern/kern_shutdown.c: 534
#11 0x... in m_free (mb=0xc0d4fe00) at ../../../kern/subr_mbuf.c: 1368
#12 0x... in m_freem (mb=0x0) at ../../../kern/subr_mbuf.c: 1403
#13 0x... in ip_input (mb=0xc0d4fe00) at ../../../netinet/ip_input.c: 963
#14 0x... in swi_net (dummy=0x0) at ../../../net/net_isr.c: 236
#15 0x... in ithread_loop (arg=0xc0d33200)
    at ../../../kern/kern_intr.c: 534
#16 0x... in fork_exit (callout=0xc01b3900 <ithread_loop>, arg=0x0,
    frame=0x0) at ../../../kern/kern_fork.c: 796

(kgdb) up 8
#8 0x... in trap (frame=
      {tf_fs = 24, tf_es = -1039597552, tf_ds = 16, tf_edi = 1, tf_esi ) -1070431840, tf_ebp = -889029704, tf_isp = -889029736, tf_ebx = 0, tf_edx = 0, tf_ecx = 32, tf_eax = 18, tf_trapno = 3, tf_err = 0, tf_eip = -1070703196, tf_cs = 8, tf_eflags = 642, tf_esp = -1070363254, tf_ss = -1070440292})
577                     if (kbd_trap (type, 0, &frame)

(kgdb) frame frame->tf_ebp frame->tf_eip

Too many args in frame specification ...
hmmmm "/&%"(/&%(" does the developer handbook need and update ? ;-)

http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kerneldebug.html#KERNELDEBUG-GDB

Here it ends , have no clue how to select correct frames ... :-)


	Andreas ///

-- 
Andreas Klemm - Powered by FreeBSD 5.1-CURRENT
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