DRM_IOCTL_LOCK ends up with drm_lock() in drm_lock.c part of drm.ko Cheers, Waldo Intel Corporation - Platform Software Engineering, UMG - Hillsboro, Oregon
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bryce Harrington Sent: Wednesday, January 16, 2008 2:55 PM To: Gunawardana, Inuka Cc: ubuntu-mobile@lists.ubuntu.com Subject: Backtrace Finally got a readable backtrace: #0 0xb7fd440e in __kernel_vsyscall () #1 0xb7e25bc9 in ioctl () from /lib/libc.so.6 #2 0xb7bc4a1d in drmGetLock (fd=10, context=2, flags=3213662516) at xf86drm.c:1259 #3 0xb7bb951b in psbDRILock (pScrn=0x820bcd0, flags=0) at psb_dri.c:724 #4 0xb7baf983 in psbScreenInit (scrnIndex=0, pScreen=0x821b2d8, argc=6, argv=0xbf8c9b74) at psb_driver.c:1342 #5 0x08073ddb in AddScreen (pfnInit=0xb7baf7f0 <psbScreenInit>, argc=6, argv=0xbf8c9b74) at ../../dix/main.c:769 #6 0x080a6e39 in InitOutput (pScreenInfo=0x81fa640, argc=6, argv=0xbf8c9b74) at ../../../../hw/xfree86/common/xf86Init.c:850 #7 0x08074590 in main (argc=6, argv=0xbf8c9b74, envp=Cannot access memory at address 0x40086432 ) at ../../dix/main.c:369 This also confirms my explorations from the other side, that the issue is within psbDRILock. drmGetLock is defined in libdrm, as this: int drmGetLock(int fd, drm_context_t context, drmLockFlags flags) { drm_lock_t lock; lock.context = context; lock.flags = 0; if (flags & DRM_LOCK_READY) lock.flags |= _DRM_LOCK_READY; if (flags & DRM_LOCK_QUIESCENT) lock.flags |= _DRM_LOCK_QUIESCENT; if (flags & DRM_LOCK_FLUSH) lock.flags |= _DRM_LOCK_FLUSH; if (flags & DRM_LOCK_FLUSH_ALL) lock.flags |= _DRM_LOCK_FLUSH_ALL; if (flags & DRM_HALT_ALL_QUEUES) lock.flags |= _DRM_HALT_ALL_QUEUES; if (flags & DRM_HALT_CUR_QUEUES) lock.flags |= _DRM_HALT_CUR_QUEUES; while (ioctl(fd, DRM_IOCTL_LOCK, &lock)) ; return 0; } Bryce -- Ubuntu-mobile mailing list Ubuntu-mobile@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-mobile -- Ubuntu-mobile mailing list Ubuntu-mobile@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-mobile
