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Date: Fri, 1 Aug 2008 08:24:23 +1000 (YAKST)
From: Alexander Logvinov <ports@logvinov.com>
Reply-To: Alexander Logvinov <ports@logvinov.com>
To: bug-followup@FreeBSD.org, ports@logvinov.com
Cc: imp@FreeBSD.org
Subject: Re: [uplcom] panic while accessing /dev/cuaU0

>Number:         126147
>Category:       kern
>Synopsis:       Re: [uplcom] panic while accessing /dev/cuaU0
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Jul 31 23:00:09 UTC 2008
>Closed-Date:    Fri Aug 01 01:10:40 UTC 2008
>Last-Modified:  Fri Aug 01 01:10:40 UTC 2008
>Originator:     
>Release:        
>Organization:
>Environment:
>Description:
   Same problem with 7-STABLE uipaq driver and Windows Mobile device.
 
   ucom0: <ASUS ASUS Windows Mobile Device, class 239/1, rev 2.00/0.00, addr 2> on uhub3
   
   When I'm trying to start two pppd on /dev/ttyU0 one after another I get a panic.
   Here are two reproduced equal panics:
    
 kernel: ucom0: open bulk out error (addr 3): IN_USE
   
 
 Fatal trap 12: page fault while in kernel mode
 fault virtual address= 0x154
 fault code= supervisor read, page not present
 instruction pointer= 0x20:0xc04fc84f
 stack pointer        = 0x28:0xe4420c00
 frame pointer        = 0x28:0xe4420c28
 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= 21 (irq16: nvidia0++)
 trap number= 12
 panic: page fault
 Uptime: 8m5s
 Physical memory: 1011 MB
 Dumping 68 MB: 53 37 21 5
 
 #0  doadump () at pcpu.h:195
 195__asm __volatile("movl %%fs:0,%0" : "=r" (td));
 (kgdb) bt
 #0  doadump () at pcpu.h:195
 #1  0xc056d413 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:418
 #2  0xc056d60f in panic (fmt=Variable "fmt" is not available.
 ) at /usr/src/sys/kern/kern_shutdown.c:572
 #3  0xc06b949c in trap_fatal (frame=0xe4420bc0, eva=340) at /usr/src/sys/i386/i386/trap.c:899
 #4  0xc06b9700 in trap_pfault (frame=0xe4420bc0, usermode=0, eva=340)
     at /usr/src/sys/i386/i386/trap.c:812
 #5  0xc06ba029 in trap (frame=0xe4420bc0) at /usr/src/sys/i386/i386/trap.c:490
 #6  0xc06a407b in calltrap () at /usr/src/sys/i386/i386/exception.s:139
 #7  0xc04fc84f in usb_transfer_complete (xfer=0xc4c3cc00) at /usr/src/sys/dev/usb/usbdi.c:947
 #8  0xc04ecb1b in uhci_transfer_complete (xfer=0xc4c3cc00) at /usr/src/sys/dev/usb/uhci.c:2109
 #9  0xc04ecc67 in uhci_idone (ii=Variable "ii" is not available.
 ) at /usr/src/sys/dev/usb/uhci.c:1449
 #10 0xc04ed16d in uhci_softintr (v=0xc3f8b000) at /usr/src/sys/dev/usb/uhci.c:1324
 #11 0xc04f8492 in usb_schedsoftintr (bus=0xc3f8b000) at /usr/src/sys/dev/usb/usb.c:844
 #12 0xc04ede43 in uhci_intr1 (sc=0xc3f8b000) at /usr/src/sys/dev/usb/uhci.c:1224
 #13 0xc04ee10d in uhci_intr (arg=0xc3f8b000) at /usr/src/sys/dev/usb/uhci.c:1139
 #14 0xc054f4eb in ithread_loop (arg=0xc3fc7480) at /usr/src/sys/kern/kern_intr.c:1036
 #15 0xc054c396 in fork_exit (callout=0xc054f340 <ithread_loop>, arg=0xc3fc7480, frame=0xe4420d38)
     at /usr/src/sys/kern/kern_fork.c:783
     #16 0xc06a40f0 in fork_trampoline () at /usr/src/sys/i386/i386/exception.s:205
 
 
 
 Fatal trap 12: page fault while in kernel mode
 fault virtual address= 0x154
 fault code= supervisor read, page not present
 instruction pointer= 0x20:0xc04fc84f
 stack pointer        = 0x28:0xe4420c00
 frame pointer        = 0x28:0xe4420c28
 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= 21 (irq16: nvidia0++)
 trap number= 12
 panic: page fault
 Uptime: 28m25s
 Physical memory: 1011 MB
 Dumping 156 MB: 141 125 109 93 77 61 45 29 13
 
 #0  doadump () at pcpu.h:195
 195__asm __volatile("movl %%fs:0,%0" : "=r" (td));
 (kgdb) bt
 #0  doadump () at pcpu.h:195
 #1  0xc056d413 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:418
 #2  0xc056d60f in panic (fmt=Variable "fmt" is not available.
 ) at /usr/src/sys/kern/kern_shutdown.c:572
 #3  0xc06b949c in trap_fatal (frame=0xe4420bc0, eva=340) at /usr/src/sys/i386/i386/trap.c:899
 #4  0xc06b9700 in trap_pfault (frame=0xe4420bc0, usermode=0, eva=340)
     at /usr/src/sys/i386/i386/trap.c:812
 #5  0xc06ba029 in trap (frame=0xe4420bc0) at /usr/src/sys/i386/i386/trap.c:490
 #6  0xc06a407b in calltrap () at /usr/src/sys/i386/i386/exception.s:139
 #7  0xc04fc84f in usb_transfer_complete (xfer=0xc3f88200) at /usr/src/sys/dev/usb/usbdi.c:947
 #8  0xc04ecb1b in uhci_transfer_complete (xfer=0xc3f88200) at /usr/src/sys/dev/usb/uhci.c:2109
 #9  0xc04ecc67 in uhci_idone (ii=Variable "ii" is not available.
 ) at /usr/src/sys/dev/usb/uhci.c:1449
 #10 0xc04ed16d in uhci_softintr (v=0xc3f8b000) at /usr/src/sys/dev/usb/uhci.c:1324
 #11 0xc04f8492 in usb_schedsoftintr (bus=0xc3f8b000) at /usr/src/sys/dev/usb/usb.c:844
 #12 0xc04ede43 in uhci_intr1 (sc=0xc3f8b000) at /usr/src/sys/dev/usb/uhci.c:1224
 #13 0xc04ee10d in uhci_intr (arg=0xc3f8b000) at /usr/src/sys/dev/usb/uhci.c:1139
 #14 0xc054f4eb in ithread_loop (arg=0xc3fc7480) at /usr/src/sys/kern/kern_intr.c:1036
 #15 0xc054c396 in fork_exit (callout=0xc054f340 <ithread_loop>, arg=0xc3fc7480, frame=0xe4420d38)
     at /usr/src/sys/kern/kern_fork.c:783
     #16 0xc06a40f0 in fork_trampoline () at /usr/src/sys/i386/i386/exception.s:205
         
>How-To-Repeat:
>Fix:
>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->closed 
State-Changed-By: linimon 
State-Changed-When: Fri Aug 1 01:09:13 UTC 2008 
State-Changed-Why:  
Misfiled followup to kern/107935; content migrated. 


Responsible-Changed-From-To: gnats-admin->freebsd-bugs 
Responsible-Changed-By: linimon 
Responsible-Changed-When: Fri Aug 1 01:09:13 UTC 2008 
Responsible-Changed-Why:  

http://www.freebsd.org/cgi/query-pr.cgi?pr=126147 
>Unformatted:
