sys/modules/linux/linux_ioctl.o - LOR [I think]

From: Wilkinson, Alex (alex.wilkinson_at_dsto.defence.gov.au)
Date: 03/02/05

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    Date: Wed, 2 Mar 2005 12:34:53 +1030
To: freebsd-current@freebsd.org

    Version: FreeBSD 6.0-CURRENT #1: Tue Feb 22 12:47:37 CST 2005

    Seeing these error on console:

      --- syscall (54, Linux ELF, linux_ioctl), eip = 0x283bf2a4, esp = 0xbfbf8ed0, ebp = 0xbfbf8f80 ---
       Calling uiomove() with the following non-sleepable locks held:
       exclusive sleep mutex ifnet r = 0 (0xc09b8ea0) locked @ /usr/src/sys/modules/linux/../../compat/linux/linux_ioctl.c:2135
       KDB: stack backtrace:
       witness_warn(2,0,c08a71b8,ec80fbec,0) at witness_warn+0x175
       uiomove(ec80fc64,20,ec80fc44,0,1) at uiomove+0x4d
       linux_ioctl_socket(c6b52000,ec80fd14,ec80fcd0,c08aa46e,68d) at linux_ioctl_socket+0x8f4
       linux_ioctl(c6b52000,ec80fd14,c08c8f72,3ad,3) at linux_ioctl+0x69
       syscall(2f,2f,2f,bfbfd36c,4) at syscall+0x13b
       Xint0x80_syscall() at Xint0x80_syscall+0x1f
       --- syscall (54, Linux ELF, linux_ioctl), eip = 0x283bf2a4, esp = 0xbfbfd290, ebp = 0xbfbfd300 ---
       Calling uiomove() with the following non-sleepable locks held:
       exclusive sleep mutex ifnet r = 0 (0xc09b8ea0) locked @ /usr/src/sys/modules/linux/../../compat/linux/linux_ioctl.c:2135
       KDB: stack backtrace:
       witness_warn(2,0,c08a71b8,0,0) at witness_warn+0x175
       uiomove(ec80fc64,20,ec80fc44,0,1) at uiomove+0x4d
       linux_ioctl_socket(c6b52000,ec80fd14,ec80fcd0,c08aa46e,68d) at
       linux_ioctl_socket+0x8f4
       linux_ioctl(c6b52000,ec80fd14,c08c8f72,3ad,3) at linux_ioctl+0x69
       syscall(2f,2f,2f,bfbfd36c,4) at syscall+0x13b
       Xint0x80_syscall() at Xint0x80_syscall+0x1f
       --- syscall (54, Linux ELF, linux_ioctl), eip = 0x283bf2a4, esp = 0xbfbfd290, ebp = 0xbfbfd300 ---

    I'm suspecting a LOR with linux_base.

    Other symptons include:

      Compilation of software hangs:

       e.g.

             c++ -c -pipe -fno-exceptions -fPIC -Wall -W -O2 -pipe -march=pentium4 -DQT_TABLET_SUPPORT -DQT_NO_DEBUG -DQT_THREAD_SUPPORT -DQT_SHARED -I/usr/local/share/qt/mkspecs/freebsd-g++ -I. -I/usr/local/include/freetype2 -I../interfaces -I/usr/local/include -I../../../include -I.moc/release-shared-mt/ -o .obj/release-shared-mt/yyindent.o yyindent.cpp
          /usr/ports/x11-toolkits/qt33/work/qt-x11-free-3.3.3/bin/uic -L /usr/ports/x11-toolkits/qt33/work/qt-x11-free-3.3.3/plugins preferences.ui -i preferences.h -o preferences.cpp
          load: 0.19 cmd: uic 10399 [lockd] 0.05u 0.13s 0% 5572k
          load: 0.19 cmd: uic 10399 [lockd] 0.05u 0.13s 0% 5572k
          load: 0.22 cmd: uic 10399 [lockd] 0.05u 0.13s 0% 5572k

    Other than that the box keeps running fine.

    e.g.

         last pid: 10808; load averages: 0.80, 0.43, 0.36 up 4+20:06:42 12:32:01
         140 processes: 2 running, 104 sleeping, 2 zombie, 31 waiting, 1 lock
         CPU states: 24.6% user, 0.0% nice, 7.7% system, 2.3% interrupt, 65.4% idle
         
         Mem: 392M Active, 401M Inact, 138M Wired, 51M Cache, 102M Buf, 11M Free
         Swap: 2048M Total, 4K Used, 2048M Free
          
           PID USERNAME PRI NICE SIZE RES STATE TIME WCPU CPU COMMAND
            11 root 171 52 0K 8K RUN 107.0H 51.46% 51.46% idle: cpu0
          

    - aW
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