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Bug #2300

Updated by tuxillo over 10 years ago

Hi, 

 

 When unloading ehci module, after few seconds of activity I get this panic: 


 


 Fatal trap 12: page fault while in kernel mode 
 
 cpuid = 1; lapic->id = 01000000 
 
 fault virtual address     = 0x48 
 
 fault code                = supervisor read data, page not present 
 
 instruction pointer       = 0x8:0xffffffff806ce788 
 
 stack pointer             = 0x10:0xffffffe0a36aa870 
 
 frame pointer             = 0x10:0xffffffe0a36aa908 
 
 code segment              = base 0x0, limit 0xfffff, type 0x1b 
                         
                         = DPL 0, pres 1, long 0, def32 0, gran 1 
 
 processor eflags          = interrupt enabled, resume, IOPL = 0 
 
 current process           = 680 
 
 current thread            = pri 6 
 
 trap number               = 12 
 
 panic: page fault 
 
 cpuid = 1 

 

 [...] 



 



 (kgdb) bt 
 
 #0    _get_mycpu () at ./machine/thread.h:69 
 
 #1    md_dumpsys (di=<optimized out>) at /usr/src/sys/platform/pc64/x86_64/dump_machdep.c:263 
 
 #2    0xffffffff80499ea5 in dumpsys () at /usr/src/sys/kern/kern_shutdown.c:925 
 
 #3    0xffffffff8049a50b in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:387 
 
 #4    0xffffffff8049a7c2 in panic (fmt=0xffffffff807a86cb "%s") at /usr/src/sys/kern/kern_shutdown.c:831 
 
 #5    0xffffffff807598d4 in trap_fatal (frame=0xffffffe0a36aa7b8, eva=<optimized out>) 
     
     at /usr/src/sys/platform/pc64/x86_64/trap.c:1018 
 
 #6    0xffffffff80759ae1 in trap_pfault (frame=0xffffffe0a36aa7b8, usermode=0) 
     
     at /usr/src/sys/platform/pc64/x86_64/trap.c:912 
 
 #7    0xffffffff8075a0b5 in trap (frame=0xffffffe0a36aa7b8) at /usr/src/sys/platform/pc64/x86_64/trap.c:617 
 
 #8    0xffffffff80743fdf in calltrap () at /usr/src/sys/platform/pc64/x86_64/exception.S:188 
 
 #9    0xffffffff806ce788 in usbioctl (ap=0xffffffe0a36aa918) at /usr/src/sys/bus/usb/usb.c:614 
 
 #10 0xffffffff8047bf3c in dev_dioctl (dev=0xffffffe07dede490, cmd=<optimized out>, data=<optimized out>, 
     
     fflag=<optimized out>, cred=<optimized out>, msg=<optimized out>) at /usr/src/sys/kern/kern_device.c:243 
 
 #11 0xffffffff80665ac1 in devfs_fo_ioctl (fp=0xffffffe07df2b0d8, com=536892675, data=<optimized out>, 
     
     ucred=<optimized out>, msg=<optimized out>) at /usr/src/sys/vfs/devfs/devfs_vnops.c:1449 
 
 #12 0xffffffff804cb26e in fo_ioctl (fp=0xffffffe07df2b0d8, com=536892675, 
     
     data=0xffffffe0a36aaa58 "p\367\377\377\377\177", cred=0xffffffe00e2c7260, msg=0xffffffe0a36aab68) 
     
     at /usr/src/sys/sys/file2.h:88 
 
 #13 0xffffffff804cb725 in mapped_ioctl (fd=<optimized out>, com=536892675, uspc_data=<optimized out>, 
     
     map=<optimized out>, msg=<optimized out>) at /usr/src/sys/kern/sys_generic.c:733 
 
 #14 0xffffffff804cb7be in sys_ioctl (uap=0xffffffe00e2c7260) at /usr/src/sys/kern/sys_generic.c:552 
 
 #15 0xffffffff8075a891 in syscall2 (frame=0xffffffe0a36aac18) at /usr/src/sys/platform/pc64/x86_64/trap.c:1231 
 
 #16 0xffffffff8074422b in Xfast_syscall () at /usr/src/sys/platform/pc64/x86_64/exception.S:323 
 
 #17 0x000000000000002b in ?? () 
 
 Backtrace stopped: previous frame inner to this frame (corrupt stack?) 

 

 Core available upon request. Also, if someone is experiencing this too please add your findings to this ticket. 

 

 Cheers, 
 
 Antonio Huete

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