BUG_WARN triggered in os/utils.c, commit 6bf356ef2831baeccd7a650ed3fde0831e33c6c0

[Peter Hutterer]

On 14/07/12 17:29 , Knut Petersen wrote:
> Hi Peter!
>
> During xserver startup a BUG_WARN condition introduced with other code in
> commit 6bf356ef2 is mt twice.

thanks. I'm aware of it, haven't had the chance to fix it yet. will do 
so asap.

Cheers,
   Peter

>
> System: linux with kernel 3.4.4 running on an AOpen i915GMm-HFS mobo
> (Pentium M Dothan)
>
>
> [    97.353] (EE) BUG: triggered 'if (sigio_blocked < 0)'
> [    97.376] (EE) BUG: utils.c:1228 in OsReleaseSIGIO()
> [    97.381] (EE)
> [    97.385] (EE) Backtrace:
> [    97.387] (EE) 0: /home/knut/git/X11-u/usr/bin/Xorg
> (xorg_backtrace+0x38) [0x81e04c8]
> [    97.389] (EE) 1: /home/knut/git/X11-u/usr/bin/Xorg
> (OsReleaseSIGIO+0xaa) [0x81e74fc]
> [    97.392] (EE) 2: /home/knut/git/X11-u/usr/bin/Xorg
> (OsVendorInit+0x39) [0x80c735b]
> [    97.394] (EE) 3: /home/knut/git/X11-u/usr/bin/Xorg (OsInit+0x3ca)
> [0x81e4e55]
> [    97.396] (EE) 4: /home/knut/git/X11-u/usr/bin/Xorg
> (0x8048000+0x1e6b6) [0x80666b6]
> [    97.399] (EE) 5: /lib/libc.so.6 (__libc_start_main+0xf3) [0xb709f003]
> [    97.401] (EE) 6: /home/knut/git/X11-u/usr/bin/Xorg
> (0x8048000+0x1e521) [0x8066521]
> [    97.403] (EE)
> [    97.488]
> X.Org X Server 1.12.99
> Release Date: 2012-03-14
> [    97.499] X Protocol Version 11, Revision 0
> [    97.501] Build Operating System: Linux 3.4.4-main i686
> [    97.503] Current Operating System: Linux golem 3.4.4-main #48
> PREEMPT Fri Jul 13 11:29:03 CEST 2012 i686
> [    97.503] Kernel command line: root=/dev/sdb2
> acpi_enforce_resources=lax drm.debug=0 3
> [    97.508] Build Date: 09 July 2012  03:35:26PM
> [    97.510]
> [ ..... ]
> [    99.868] (II) Loading
> /home/knut/git/X11-u/usr/lib/xorg/modules/extensions/libdri2.so
> [    99.868] (II) Module dri2: vendor="X.Org Foundation"
> [    99.868]    compiled for 1.12.99, module version = 1.2.0
> [    99.868]    ABI class: X.Org Server Extension, version 6.0
> [    99.868] (==) Depth 24 pixmap format is 32 bpp
> [    99.868] (II) intel(0): [DRI2] Setup complete
> [    99.868] (II) intel(0): [DRI2]   DRI driver: i915
> [    99.868] (II) intel(0): Allocated new frame buffer 1280x1024 stride
> 8192, tiled
> [    99.872] (II) UXA(0): Driver registered support for the following
> operations:
> [    99.872] (II)         solid
> [    99.872] (II)         copy
> [    99.872] (II)         composite (RENDER acceleration)
> [    99.872] (II)         put_image
> [    99.872] (II)         get_image
> [    99.872] (==) intel(0): Backing store disabled
> [    99.872] (==) intel(0): Silken mouse enabled
> [    99.873] (II) intel(0): Initializing HW Cursor
> [    99.873] (II) intel(0): RandR 1.2 enabled, ignore the following
> RandR disabled message.
> [    99.874] (==) intel(0): DPMS enabled
> [    99.874] (==) intel(0): Intel XvMC decoder disabled
> [    99.874] (II) intel(0): Set up textured video
> [    99.874] (II) intel(0): Set up overlay video
> [    99.874] (II) intel(0): direct rendering: DRI2 Enabled
> [    99.874] (==) intel(0): hotplug detection: "enabled"
> [    99.908] (--) RandR disabled
> [    99.908] (EE) BUG: triggered 'if (sigio_blocked < 0)'
> [    99.908] (EE) BUG: utils.c:1228 in OsReleaseSIGIO()
> [    99.909] (EE)
> [    99.909] (EE) Backtrace:
> [    99.909] (EE) 0: /home/knut/git/X11-u/usr/bin/Xorg
> (xorg_backtrace+0x38) [0x81e04c8]
> [    99.910] (EE) 1: /home/knut/git/X11-u/usr/bin/Xorg
> (OsReleaseSIGIO+0xaa) [0x81e74fc]
> [    99.910] (EE) 2: /home/knut/git/X11-u/usr/bin/Xorg
> (InitOutput+0x13ba) [0x80c7209]
> [    99.910] (EE) 3: /home/knut/git/X11-u/usr/bin/Xorg
> (0x8048000+0x1e7fb) [0x80667fb]
> [    99.911] (EE) 4: /lib/libc.so.6 (__libc_start_main+0xf3) [0xb709f003]
> [    99.911] (EE) 5: /home/knut/git/X11-u/usr/bin/Xorg
> (0x8048000+0x1e521) [0x8066521]
> [    99.911] (EE)
> [    99.911] (II) Initializing built-in extension Generic Event Extension
> [    99.912] (II) Initializing built-in extension SHAPE
> [    99.912] (II) Initializing built-in extension MIT-SHM
> [    99.912] (II) Initializing built-in extension XInputExtension
> [    99.912] (II) Initializing built-in extension XTEST
> [    99.912] (II) Initializing built-in extension BIG-REQUESTS
> [    99.912] (II) Initializing built-in extension SYNC
> [    99.912] (II) Initializing built-in extension XKEYBOARD
> [    99.912] (II) Initializing built-in extension XC-MISC
> [    99.912] (II) Initializing built-in extension XINERAMA
> [    99.912] (II) Initializing built-in extension XFIXES
> [    99.912] (II) Initializing built-in extension RENDER
> [    99.912] (II) Initializing built-in extension RANDR
> [    99.912] (II) Initializing built-in extension COMPOSITE
> [    99.912] (II) Initializing built-in extension DAMAGE
>
> cu,
>   knut