kern/125617: [ath] ath(4) related panic

Sun Aug 3 16:20:10 UTC 2008

The following reply was made to PR kern/125617; it has been noted by GNATS.

From: Rory Arms <rorya at TrueStep.com>
To: bug-followup at FreeBSD.org, rorya+freebsd.org at TrueStep.com
Cc:  
Subject: Re: kern/125617: [ath] ath(4) related panic
Date: Sun, 3 Aug 2008 11:57:54 -0400

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 Ok, I got another panic, which may be related to the one mentioned in  
 the original, simply based on how the system behaved right before it  
 paniced (ath0 & fxp1 suddenly giving errors). However, the code path  
 does seem to be different:

  > sudo kgdb /boot/kernel/kernel vmcore.0             Password:
 [GDB will not be able to debug user-mode threads: /usr/lib/ 
 libthread_db.so: Undefined symbol "ps_pglobal_lookup"]
 GNU gdb 6.1.1 [FreeBSD]
 Copyright 2004 Free Software Foundation, Inc.
 GDB is free software, covered by the GNU General Public License, and  
 you are
 welcome to change it and/or distribute copies of it under certain  
 conditions.
 Type "show copying" to see the conditions.
 There is absolutely no warranty for GDB.  Type "show warranty" for  
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 This GDB was configured as "i386-marcel-freebsd".

 Unread portion of the kernel message buffer:

 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     = 0x20:0xc05eb700
 stack pointer           = 0x28:0xe4052b68
 frame pointer           = 0x28:0xe4052b80
 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         = 23 (irq19: fxp1 uhci0)
 trap number             = 12
 panic: page fault
 cpuid = 1
 Uptime: 15d1h16m43s
 Physical memory: 1015 MB
 Dumping 249 MB: 234 218 202 186 170 154 138 122 106 90 74 58 42 26 10

 #0  doadump () at pcpu.h:195
 195     pcpu.h: No such file or directory.
          in pcpu.h
 (kgdb) bt
 #0  doadump () at pcpu.h:195
 #1  0xc059fbd6 in boot (howto=260) at /usr/src/sys/kern/ 
 kern_shutdown.c:409
 #2  0xc059feae in panic (fmt=Variable "fmt" is not available.
 ) at /usr/src/sys/kern/kern_shutdown.c:563
 #3  0xc08190cc in trap_fatal (frame=0xe4052b28, eva=12)
      at /usr/src/sys/i386/i386/trap.c:899
 #4  0xc081933b in trap_pfault (frame=0xe4052b28, usermode=0, eva=12)
      at /usr/src/sys/i386/i386/trap.c:812
 #5  0xc0819d32 in trap (frame=0xe4052b28) at /usr/src/sys/i386/i386/ 
 trap.c:490
 #6  0xc080097b in calltrap () at /usr/src/sys/i386/i386/exception.s:139
 #7  0xc05eb700 in m_copydata (m=0x0, off=0, len=140,
      cp=0xc6289a74 "&_\026?,M\t7P\020") at /usr/src/sys/kern/ 
 uipc_mbuf.c:813
 #8  0xc06862b1 in ip_forward (m=0xc54bf800, srcrt=1)
      at /usr/src/sys/netinet/ip_input.c:1307
 #9  0xc0687922 in ip_input (m=0xc54bf800)
      at /usr/src/sys/netinet/ip_input.c:610
 #10 0xc0640a22 in netisr_dispatch (num=2, m=0xc54bf800)
      at /usr/src/sys/net/netisr.c:185
 #11 0xc0637a71 in ether_demux (ifp=0xc3bc1400, m=0xc54bf800)
      at /usr/src/sys/net/if_ethersubr.c:834
 #12 0xc0637e9f in ether_input (ifp=0xc3bc1400, m=0xc54bf800)
      at /usr/src/sys/net/if_ethersubr.c:692
 #13 0xc04c573a in fxp_intr (xsc=0xc3c52000)
      at /usr/src/sys/dev/fxp/if_fxp.c:1706
 ---Type <return> to continue, or q <return> to quit---
 #14 0xc058242b in ithread_loop (arg=0xc3bc2b10)
      at /usr/src/sys/kern/kern_intr.c:1036
 #15 0xc057f154 in fork_exit (callout=0xc0582260 <ithread_loop>,
      arg=0xc3bc2b10, frame=0xe4052d38) at /usr/src/sys/kern/ 
 kern_fork.c:781
 #16 0xc08009f0 in fork_trampoline () at /usr/src/sys/i386/i386/ 
 exception.s:205
 (kgdb) p panicstr
 $1 = 0xc08f3e00 "page fault"
 (kgdb)

 messages that led up to the panic:

 Aug  3 10:27:35 Tserver kernel: ath0: stuck beacon; resetting (bmiss  
 count 4)
 Aug  3 10:27:35 Tserver kernel: ath0: ath_reset: unable to reset
 Aug  3 10:27:35 Tserver kernel: hardware; hal status
 Aug  3 10:27:35 Tserver kernel: 3
 Aug  3 10:28:00 Tserver kernel: ath0: device timeout
 Aug  3 10:35:06 Tserver kernel: fxp1: SCB timeout: 0x80 0x0 0x50 0x600
 Aug  3 10:35:24 Tserver last message repeated 71 times
 Aug  3 10:35:28 Tserver kernel: fxp1: device timeout
 Aug  3 10:35:28 Tserver kernel: fxp1: SCB timeout: 0x10 0x0 0x40 0x0
 Aug  3 10:35:30 Tserver kernel: fxp1: device timeout
 [[ panic happened not long after this event ]]

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