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Bug #556

Updated by tuxillo almost 8 years ago

hey, 

 

 100% reproducible panic on detach of my usb stick.    ehci is loaded as well.    UP system. 

 

 #12 0xc0194734 in kprintf (fmt=0xdeadc0de <Address 0xdeadc0de out of bounds>) 
     
     at /usr/build/src/sys/kern/subr_prf.c:304 
 
 #13 0xc0260cfd in usb_disconnect_port (up=0xc415a178, parent=0xdeadc0de) 
     
     at /usr/build/src/sys/bus/usb/usb_subr.c:1382 
 
 #14 0xc02621a3 in uhub_detach (self=0xc415a100) at /usr/build/src/sys/bus/usb/uhub.c:610 
 
 #15 0xc018d9ae in device_detach (dev=0xc415a100) at device_if.h:48 
 
 #16 0xc018cef9 in device_delete_child (dev=0xdeadc0de, child=0xc415a100) 
     
     at /usr/build/src/sys/kern/subr_bus.c:591 
 
 #17 0xc0260d4b in usb_disconnect_port (up=0xc698b1f4, parent=0xdeadc0de) 
     
     at /usr/build/src/sys/bus/usb/usb_subr.c:1387 
 
 #18 0xc0261f33 in uhub_explore (dev=0xc4139940) at /usr/build/src/sys/bus/usb/uhub.c:460 
 
 #19 0xc025c6b7 in usb_discover (v=0xc695d9e0) at /usr/build/src/sys/bus/usb/usb.c:780 
 
 #20 0xc025bf71 in usb_event_thread (arg=0xc695d9e0) at /usr/build/src/sys/bus/usb/usb.c:469 

 

 gdb is broken somehow, the 0xdeadc0de arguments are not true, except for for kprintf. 

 

 (kgdb) fra 13 
 
 #13 0xc0260cfd in usb_disconnect_port (up=0xc415a178, parent=0xdeadc0de) 
     
     at /usr/build/src/sys/bus/usb/usb_subr.c:1382 
 
 1382                              kprintf("%s: at %s", USBDEVPTRNAME(dev->subdevs[i]), 
 
 (kgdb) p dev->subdevs[0] 
 
 $1 = 0xc415a190 
 
 (kgdb) p *dev->subdevs[0] 
 
 $2 = {ops = 0xc415abf8, link = {tqe_next = 0xdeadc0de, tqe_prev = 0xdeadc0de},  
    
   parent = 0xdeadc0de, children = {tqh_first = 0xdeadc0de, tqh_last = 0xdeadc0de},  
    
   driver = 0xdeadc0de, devclass = 0xdeadc0de, unit = -559038242,  
    
   nameunit = 0xdeadc0de <Address 0xdeadc0de out of bounds>,  
    
   desc = 0xdeadc0de <Address 0xdeadc0de out of bounds>, busy = -559038242, state = 3735929054,  
    
   devflags = 3735929054, flags = 49374, order = 173 '�', pad = 222 '�, ivars = 0xdeadc0de,  
    
   softc = 0x0} 

 

 this stick has an integrated usb hub. 

 

 dump arriving on leaf at ~corecode/crash/*13* 

 

 cheers 
   
   simon

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