==12934== Memcheck, a memory error detector
==12934== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward et al.
==12934== Using Valgrind-3.11.0 and LibVEX; rerun with -h for copyright info
==12934== Command: /usr/lib/xorg-server/Xorg :1
==12934== Parent PID: 12933
==12934== 
==12934== Syscall param msync(start) points to uninitialised byte(s)
==12934==    at 0x6A7AAD0: __msync_nocancel (in /usr/lib/libc-2.23.so)
==12934==    by 0x5570201: ??? (in /usr/lib/libunwind.so.8.0.1)
==12934==    by 0x5573CD6: ??? (in /usr/lib/libunwind.so.8.0.1)
==12934==    by 0x557421D: ??? (in /usr/lib/libunwind.so.8.0.1)
==12934==    by 0x5574578: ??? (in /usr/lib/libunwind.so.8.0.1)
==12934==    by 0x5570C10: _ULx86_64_step (in /usr/lib/libunwind.so.8.0.1)
==12934==    by 0x55716E2: ??? (in /usr/lib/libunwind.so.8.0.1)
==12934==    by 0x556F7E1: backtrace (in /usr/lib/libunwind.so.8.0.1)
==12934==    by 0x36F4BC: OsInit (osinit.c:207)
==12934==    by 0x163A90: dix_main (main.c:165)
==12934==    by 0x143D38: main (stubmain.c:34)
==12934==  Address 0xffefff000 is on thread 1's stack
==12934==  in frame #7, created by backtrace (???:)
==12934== 
==12934== Warning: noted but unhandled ioctl 0x4b51 with no size/direction hints.
==12934==    This could cause spurious value errors to appear.
==12934==    See README_MISSING_SYSCALL_OR_IOCTL for guidance on writing a proper wrapper.
**12934** SNA compiled for use with valgrind
==12934== Warning: noted but unhandled ioctl 0x6458 with no size/direction hints.
==12934==    This could cause spurious value errors to appear.
==12934==    See README_MISSING_SYSCALL_OR_IOCTL for guidance on writing a proper wrapper.
==12934== Syscall param ioctl(generic) points to uninitialised byte(s)
==12934==    at 0x6A77277: ioctl (in /usr/lib/libc-2.23.so)
==12934==    by 0x5995957: drmIoctl (in /usr/lib/libdrm.so.2.4.0)
==12934==    by 0x599824D: drmCommandWriteRead (in /usr/lib/libdrm.so.2.4.0)
==12934==    by 0xC8DF0C0: ??? (in /usr/lib/xorg/modules/drivers/radeon_drv.so)
==12934==    by 0x1C40A7: InitOutput (xf86Init.c:595)
==12934==    by 0x163C15: dix_main (main.c:204)
==12934==    by 0x143D38: main (stubmain.c:34)
==12934==  Address 0xfff0002d0 is on thread 1's stack
==12934== 
==12934== Warning: noted but unhandled ioctl 0x641e with no size/direction hints.
==12934==    This could cause spurious value errors to appear.
==12934==    See README_MISSING_SYSCALL_OR_IOCTL for guidance on writing a proper wrapper.
==12934== Syscall param ioctl(generic) points to uninitialised byte(s)
==12934==    at 0x6A77277: ioctl (in /usr/lib/libc-2.23.so)
==12934==    by 0x5995957: drmIoctl (in /usr/lib/libdrm.so.2.4.0)
==12934==    by 0x599824D: drmCommandWriteRead (in /usr/lib/libdrm.so.2.4.0)
==12934==    by 0xCB0CAFE: ??? (in /usr/lib/libdrm_radeon.so.1.0.1)
==12934==    by 0xC8E0211: ??? (in /usr/lib/xorg/modules/drivers/radeon_drv.so)
==12934==    by 0xC8E06A8: ??? (in /usr/lib/xorg/modules/drivers/radeon_drv.so)
==12934==    by 0x15E3DA: AddGPUScreen (dispatch.c:3915)
==12934==    by 0x1C4F20: InitOutput (xf86Init.c:857)
==12934==    by 0x163C15: dix_main (main.c:204)
==12934==    by 0x143D38: main (stubmain.c:34)
==12934==  Address 0xffefff47c is on thread 1's stack
==12934== 
==12934== Warning: invalid file descriptor -1 in syscall write()
==12934== Warning: invalid file descriptor -1 in syscall write()
==12934== Warning: invalid file descriptor -1 in syscall write()
==12934== Warning: invalid file descriptor -1 in syscall write()
==12934== Warning: invalid file descriptor -1 in syscall write()
==12934== Warning: invalid file descriptor -1 in syscall write()
==12934== Warning: invalid file descriptor -1 in syscall write()
==12934== Warning: invalid file descriptor -1 in syscall write()
==12934== Warning: invalid file descriptor -1 in syscall write()
==12934== Warning: invalid file descriptor -1 in syscall write()
==12934== Invalid free() / delete / delete[] / realloc()
==12934==    at 0x4C2BCEA: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0xC1A5133: flip (sna_present.c:627)
==12934==    by 0xC1A55B1: sna_present_flip (sna_present.c:760)
==12934==    by 0x2A8659: present_flip (present.c:204)
==12934==    by 0x2A97D2: present_execute (present.c:681)
==12934==    by 0x2A8B84: present_re_execute (present.c:350)
==12934==    by 0x2A8BFB: present_flip_try_ready (present.c:360)
==12934==    by 0x2A91F4: present_flip_notify (present.c:514)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0D55C3: sna_wakeup_handler (sna_driver.c:735)
==12934==  Address 0x1701c020 is 0 bytes inside a block of size 64 free'd
==12934==    at 0x4C2BCEA: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0xC1A503E: present_flip_handler (sna_present.c:596)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0C9CE1: sna_mode_restore (sna_display.c:6387)
==12934==    by 0xC0CA606: sna_page_flip (sna_display.c:6539)
==12934==    by 0xC1A5123: flip (sna_present.c:625)
==12934==    by 0xC1A55B1: sna_present_flip (sna_present.c:760)
==12934==    by 0x2A8659: present_flip (present.c:204)
==12934==    by 0x2A97D2: present_execute (present.c:681)
==12934==    by 0x2A8B84: present_re_execute (present.c:350)
==12934==    by 0x2A8BFB: present_flip_try_ready (present.c:360)
==12934==    by 0x2A91F4: present_flip_notify (present.c:514)
==12934==  Block was alloc'd at
==12934==    at 0x4C2ABD0: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0xC1A5091: flip (sna_present.c:614)
==12934==    by 0xC1A55B1: sna_present_flip (sna_present.c:760)
==12934==    by 0x2A8659: present_flip (present.c:204)
==12934==    by 0x2A97D2: present_execute (present.c:681)
==12934==    by 0x2A8B84: present_re_execute (present.c:350)
==12934==    by 0x2A8BFB: present_flip_try_ready (present.c:360)
==12934==    by 0x2A91F4: present_flip_notify (present.c:514)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0D55C3: sna_wakeup_handler (sna_driver.c:735)
==12934== 
==12934== Invalid read of size 8
==12934==    at 0x2A807C: xorg_list_del (list.h:204)
==12934==    by 0x2A98D5: present_execute (present.c:707)
==12934==    by 0x2A8B84: present_re_execute (present.c:350)
==12934==    by 0x2A8BFB: present_flip_try_ready (present.c:360)
==12934==    by 0x2A91F4: present_flip_notify (present.c:514)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0D55C3: sna_wakeup_handler (sna_driver.c:735)
==12934==    by 0x164E85: WakeupHandler (dixutils.c:426)
==12934==    by 0x363B91: WaitForSomething (WaitFor.c:230)
==12934==    by 0x154375: Dispatch (dispatch.c:359)
==12934==  Address 0x1701b9c0 is 16 bytes inside a block of size 176 free'd
==12934==    at 0x4C2BCEA: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2AA52B: present_vblank_destroy (present.c:1057)
==12934==    by 0x2A91E8: present_flip_notify (present.c:512)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0C9CE1: sna_mode_restore (sna_display.c:6387)
==12934==    by 0xC0CA606: sna_page_flip (sna_display.c:6539)
==12934==    by 0xC1A5123: flip (sna_present.c:625)
==12934==    by 0xC1A55B1: sna_present_flip (sna_present.c:760)
==12934==    by 0x2A8659: present_flip (present.c:204)
==12934==    by 0x2A97D2: present_execute (present.c:681)
==12934==  Block was alloc'd at
==12934==    at 0x4C2C947: calloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2A9E30: present_pixmap (present.c:874)
==12934==    by 0x2AC420: proc_present_pixmap (present_request.c:138)
==12934==    by 0x2AC897: proc_present_dispatch (present_request.c:251)
==12934==    by 0x15459A: Dispatch (dispatch.c:430)
==12934==    by 0x163F9C: dix_main (main.c:300)
==12934==    by 0x143D38: main (stubmain.c:34)
==12934== 
==12934== Invalid read of size 8
==12934==    at 0x2A8083: xorg_list_del (list.h:204)
==12934==    by 0x2A98D5: present_execute (present.c:707)
==12934==    by 0x2A8B84: present_re_execute (present.c:350)
==12934==    by 0x2A8BFB: present_flip_try_ready (present.c:360)
==12934==    by 0x2A91F4: present_flip_notify (present.c:514)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0D55C3: sna_wakeup_handler (sna_driver.c:735)
==12934==    by 0x164E85: WakeupHandler (dixutils.c:426)
==12934==    by 0x363B91: WaitForSomething (WaitFor.c:230)
==12934==    by 0x154375: Dispatch (dispatch.c:359)
==12934==  Address 0x1701b9c8 is 24 bytes inside a block of size 176 free'd
==12934==    at 0x4C2BCEA: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2AA52B: present_vblank_destroy (present.c:1057)
==12934==    by 0x2A91E8: present_flip_notify (present.c:512)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0C9CE1: sna_mode_restore (sna_display.c:6387)
==12934==    by 0xC0CA606: sna_page_flip (sna_display.c:6539)
==12934==    by 0xC1A5123: flip (sna_present.c:625)
==12934==    by 0xC1A55B1: sna_present_flip (sna_present.c:760)
==12934==    by 0x2A8659: present_flip (present.c:204)
==12934==    by 0x2A97D2: present_execute (present.c:681)
==12934==  Block was alloc'd at
==12934==    at 0x4C2C947: calloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2A9E30: present_pixmap (present.c:874)
==12934==    by 0x2AC420: proc_present_pixmap (present_request.c:138)
==12934==    by 0x2AC897: proc_present_dispatch (present_request.c:251)
==12934==    by 0x15459A: Dispatch (dispatch.c:430)
==12934==    by 0x163F9C: dix_main (main.c:300)
==12934==    by 0x143D38: main (stubmain.c:34)
==12934== 
==12934== Invalid write of size 8
==12934==    at 0x2A8049: __xorg_list_del (list.h:183)
==12934==    by 0x2A8091: xorg_list_del (list.h:204)
==12934==    by 0x2A98D5: present_execute (present.c:707)
==12934==    by 0x2A8B84: present_re_execute (present.c:350)
==12934==    by 0x2A8BFB: present_flip_try_ready (present.c:360)
==12934==    by 0x2A91F4: present_flip_notify (present.c:514)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0D55C3: sna_wakeup_handler (sna_driver.c:735)
==12934==    by 0x164E85: WakeupHandler (dixutils.c:426)
==12934==    by 0x363B91: WaitForSomething (WaitFor.c:230)
==12934==  Address 0x1701b9c8 is 24 bytes inside a block of size 176 free'd
==12934==    at 0x4C2BCEA: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2AA52B: present_vblank_destroy (present.c:1057)
==12934==    by 0x2A91E8: present_flip_notify (present.c:512)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0C9CE1: sna_mode_restore (sna_display.c:6387)
==12934==    by 0xC0CA606: sna_page_flip (sna_display.c:6539)
==12934==    by 0xC1A5123: flip (sna_present.c:625)
==12934==    by 0xC1A55B1: sna_present_flip (sna_present.c:760)
==12934==    by 0x2A8659: present_flip (present.c:204)
==12934==    by 0x2A97D2: present_execute (present.c:681)
==12934==  Block was alloc'd at
==12934==    at 0x4C2C947: calloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2A9E30: present_pixmap (present.c:874)
==12934==    by 0x2AC420: proc_present_pixmap (present_request.c:138)
==12934==    by 0x2AC897: proc_present_dispatch (present_request.c:251)
==12934==    by 0x15459A: Dispatch (dispatch.c:430)
==12934==    by 0x163F9C: dix_main (main.c:300)
==12934==    by 0x143D38: main (stubmain.c:34)
==12934== 
==12934== Invalid write of size 8
==12934==    at 0x2A8055: __xorg_list_del (list.h:184)
==12934==    by 0x2A8091: xorg_list_del (list.h:204)
==12934==    by 0x2A98D5: present_execute (present.c:707)
==12934==    by 0x2A8B84: present_re_execute (present.c:350)
==12934==    by 0x2A8BFB: present_flip_try_ready (present.c:360)
==12934==    by 0x2A91F4: present_flip_notify (present.c:514)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0D55C3: sna_wakeup_handler (sna_driver.c:735)
==12934==    by 0x164E85: WakeupHandler (dixutils.c:426)
==12934==    by 0x363B91: WaitForSomething (WaitFor.c:230)
==12934==  Address 0x1701b9c0 is 16 bytes inside a block of size 176 free'd
==12934==    at 0x4C2BCEA: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2AA52B: present_vblank_destroy (present.c:1057)
==12934==    by 0x2A91E8: present_flip_notify (present.c:512)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0C9CE1: sna_mode_restore (sna_display.c:6387)
==12934==    by 0xC0CA606: sna_page_flip (sna_display.c:6539)
==12934==    by 0xC1A5123: flip (sna_present.c:625)
==12934==    by 0xC1A55B1: sna_present_flip (sna_present.c:760)
==12934==    by 0x2A8659: present_flip (present.c:204)
==12934==    by 0x2A97D2: present_execute (present.c:681)
==12934==  Block was alloc'd at
==12934==    at 0x4C2C947: calloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2A9E30: present_pixmap (present.c:874)
==12934==    by 0x2AC420: proc_present_pixmap (present_request.c:138)
==12934==    by 0x2AC897: proc_present_dispatch (present_request.c:251)
==12934==    by 0x15459A: Dispatch (dispatch.c:430)
==12934==    by 0x163F9C: dix_main (main.c:300)
==12934==    by 0x143D38: main (stubmain.c:34)
==12934== 
==12934== Invalid write of size 8
==12934==    at 0x2A7F61: xorg_list_init (list.h:125)
==12934==    by 0x2A809D: xorg_list_del (list.h:205)
==12934==    by 0x2A98D5: present_execute (present.c:707)
==12934==    by 0x2A8B84: present_re_execute (present.c:350)
==12934==    by 0x2A8BFB: present_flip_try_ready (present.c:360)
==12934==    by 0x2A91F4: present_flip_notify (present.c:514)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0D55C3: sna_wakeup_handler (sna_driver.c:735)
==12934==    by 0x164E85: WakeupHandler (dixutils.c:426)
==12934==    by 0x363B91: WaitForSomething (WaitFor.c:230)
==12934==  Address 0x1701b9c8 is 24 bytes inside a block of size 176 free'd
==12934==    at 0x4C2BCEA: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2AA52B: present_vblank_destroy (present.c:1057)
==12934==    by 0x2A91E8: present_flip_notify (present.c:512)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0C9CE1: sna_mode_restore (sna_display.c:6387)
==12934==    by 0xC0CA606: sna_page_flip (sna_display.c:6539)
==12934==    by 0xC1A5123: flip (sna_present.c:625)
==12934==    by 0xC1A55B1: sna_present_flip (sna_present.c:760)
==12934==    by 0x2A8659: present_flip (present.c:204)
==12934==    by 0x2A97D2: present_execute (present.c:681)
==12934==  Block was alloc'd at
==12934==    at 0x4C2C947: calloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2A9E30: present_pixmap (present.c:874)
==12934==    by 0x2AC420: proc_present_pixmap (present_request.c:138)
==12934==    by 0x2AC897: proc_present_dispatch (present_request.c:251)
==12934==    by 0x15459A: Dispatch (dispatch.c:430)
==12934==    by 0x163F9C: dix_main (main.c:300)
==12934==    by 0x143D38: main (stubmain.c:34)
==12934== 
==12934== Invalid read of size 8
==12934==    at 0x2A7F69: xorg_list_init (list.h:125)
==12934==    by 0x2A809D: xorg_list_del (list.h:205)
==12934==    by 0x2A98D5: present_execute (present.c:707)
==12934==    by 0x2A8B84: present_re_execute (present.c:350)
==12934==    by 0x2A8BFB: present_flip_try_ready (present.c:360)
==12934==    by 0x2A91F4: present_flip_notify (present.c:514)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0D55C3: sna_wakeup_handler (sna_driver.c:735)
==12934==    by 0x164E85: WakeupHandler (dixutils.c:426)
==12934==    by 0x363B91: WaitForSomething (WaitFor.c:230)
==12934==  Address 0x1701b9c8 is 24 bytes inside a block of size 176 free'd
==12934==    at 0x4C2BCEA: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2AA52B: present_vblank_destroy (present.c:1057)
==12934==    by 0x2A91E8: present_flip_notify (present.c:512)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0C9CE1: sna_mode_restore (sna_display.c:6387)
==12934==    by 0xC0CA606: sna_page_flip (sna_display.c:6539)
==12934==    by 0xC1A5123: flip (sna_present.c:625)
==12934==    by 0xC1A55B1: sna_present_flip (sna_present.c:760)
==12934==    by 0x2A8659: present_flip (present.c:204)
==12934==    by 0x2A97D2: present_execute (present.c:681)
==12934==  Block was alloc'd at
==12934==    at 0x4C2C947: calloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2A9E30: present_pixmap (present.c:874)
==12934==    by 0x2AC420: proc_present_pixmap (present_request.c:138)
==12934==    by 0x2AC897: proc_present_dispatch (present_request.c:251)
==12934==    by 0x15459A: Dispatch (dispatch.c:430)
==12934==    by 0x163F9C: dix_main (main.c:300)
==12934==    by 0x143D38: main (stubmain.c:34)
==12934== 
==12934== Invalid write of size 8
==12934==    at 0x2A7F71: xorg_list_init (list.h:125)
==12934==    by 0x2A809D: xorg_list_del (list.h:205)
==12934==    by 0x2A98D5: present_execute (present.c:707)
==12934==    by 0x2A8B84: present_re_execute (present.c:350)
==12934==    by 0x2A8BFB: present_flip_try_ready (present.c:360)
==12934==    by 0x2A91F4: present_flip_notify (present.c:514)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0D55C3: sna_wakeup_handler (sna_driver.c:735)
==12934==    by 0x164E85: WakeupHandler (dixutils.c:426)
==12934==    by 0x363B91: WaitForSomething (WaitFor.c:230)
==12934==  Address 0x1701b9c0 is 16 bytes inside a block of size 176 free'd
==12934==    at 0x4C2BCEA: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2AA52B: present_vblank_destroy (present.c:1057)
==12934==    by 0x2A91E8: present_flip_notify (present.c:512)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0C9CE1: sna_mode_restore (sna_display.c:6387)
==12934==    by 0xC0CA606: sna_page_flip (sna_display.c:6539)
==12934==    by 0xC1A5123: flip (sna_present.c:625)
==12934==    by 0xC1A55B1: sna_present_flip (sna_present.c:760)
==12934==    by 0x2A8659: present_flip (present.c:204)
==12934==    by 0x2A97D2: present_execute (present.c:681)
==12934==  Block was alloc'd at
==12934==    at 0x4C2C947: calloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2A9E30: present_pixmap (present.c:874)
==12934==    by 0x2AC420: proc_present_pixmap (present_request.c:138)
==12934==    by 0x2AC897: proc_present_dispatch (present_request.c:251)
==12934==    by 0x15459A: Dispatch (dispatch.c:430)
==12934==    by 0x163F9C: dix_main (main.c:300)
==12934==    by 0x143D38: main (stubmain.c:34)
==12934== 
==12934== Invalid write of size 4
==12934==    at 0x2A98E6: present_execute (present.c:711)
==12934==    by 0x2A8B84: present_re_execute (present.c:350)
==12934==    by 0x2A8BFB: present_flip_try_ready (present.c:360)
==12934==    by 0x2A91F4: present_flip_notify (present.c:514)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0D55C3: sna_wakeup_handler (sna_driver.c:735)
==12934==    by 0x164E85: WakeupHandler (dixutils.c:426)
==12934==    by 0x363B91: WaitForSomething (WaitFor.c:230)
==12934==    by 0x154375: Dispatch (dispatch.c:359)
==12934==    by 0x163F9C: dix_main (main.c:300)
==12934==  Address 0x1701ba4c is 156 bytes inside a block of size 176 free'd
==12934==    at 0x4C2BCEA: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2AA52B: present_vblank_destroy (present.c:1057)
==12934==    by 0x2A91E8: present_flip_notify (present.c:512)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0C9CE1: sna_mode_restore (sna_display.c:6387)
==12934==    by 0xC0CA606: sna_page_flip (sna_display.c:6539)
==12934==    by 0xC1A5123: flip (sna_present.c:625)
==12934==    by 0xC1A55B1: sna_present_flip (sna_present.c:760)
==12934==    by 0x2A8659: present_flip (present.c:204)
==12934==    by 0x2A97D2: present_execute (present.c:681)
==12934==  Block was alloc'd at
==12934==    at 0x4C2C947: calloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2A9E30: present_pixmap (present.c:874)
==12934==    by 0x2AC420: proc_present_pixmap (present_request.c:138)
==12934==    by 0x2AC897: proc_present_dispatch (present_request.c:251)
==12934==    by 0x15459A: Dispatch (dispatch.c:430)
==12934==    by 0x163F9C: dix_main (main.c:300)
==12934==    by 0x143D38: main (stubmain.c:34)
==12934== 
==12934== Invalid read of size 8
==12934==    at 0x2A9948: present_execute (present.c:729)
==12934==    by 0x2A8B84: present_re_execute (present.c:350)
==12934==    by 0x2A8BFB: present_flip_try_ready (present.c:360)
==12934==    by 0x2A91F4: present_flip_notify (present.c:514)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0D55C3: sna_wakeup_handler (sna_driver.c:735)
==12934==    by 0x164E85: WakeupHandler (dixutils.c:426)
==12934==    by 0x363B91: WaitForSomething (WaitFor.c:230)
==12934==    by 0x154375: Dispatch (dispatch.c:359)
==12934==    by 0x163F9C: dix_main (main.c:300)
==12934==  Address 0x1701ba18 is 104 bytes inside a block of size 176 free'd
==12934==    at 0x4C2BCEA: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2AA52B: present_vblank_destroy (present.c:1057)
==12934==    by 0x2A91E8: present_flip_notify (present.c:512)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0C9CE1: sna_mode_restore (sna_display.c:6387)
==12934==    by 0xC0CA606: sna_page_flip (sna_display.c:6539)
==12934==    by 0xC1A5123: flip (sna_present.c:625)
==12934==    by 0xC1A55B1: sna_present_flip (sna_present.c:760)
==12934==    by 0x2A8659: present_flip (present.c:204)
==12934==    by 0x2A97D2: present_execute (present.c:681)
==12934==  Block was alloc'd at
==12934==    at 0x4C2C947: calloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2A9E30: present_pixmap (present.c:874)
==12934==    by 0x2AC420: proc_present_pixmap (present_request.c:138)
==12934==    by 0x2AC897: proc_present_dispatch (present_request.c:251)
==12934==    by 0x15459A: Dispatch (dispatch.c:430)
==12934==    by 0x163F9C: dix_main (main.c:300)
==12934==    by 0x143D38: main (stubmain.c:34)
==12934== 
==12934== Invalid read of size 8
==12934==    at 0x2A995D: present_execute (present.c:730)
==12934==    by 0x2A8B84: present_re_execute (present.c:350)
==12934==    by 0x2A8BFB: present_flip_try_ready (present.c:360)
==12934==    by 0x2A91F4: present_flip_notify (present.c:514)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0D55C3: sna_wakeup_handler (sna_driver.c:735)
==12934==    by 0x164E85: WakeupHandler (dixutils.c:426)
==12934==    by 0x363B91: WaitForSomething (WaitFor.c:230)
==12934==    by 0x154375: Dispatch (dispatch.c:359)
==12934==    by 0x163F9C: dix_main (main.c:300)
==12934==  Address 0x1701ba18 is 104 bytes inside a block of size 176 free'd
==12934==    at 0x4C2BCEA: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2AA52B: present_vblank_destroy (present.c:1057)
==12934==    by 0x2A91E8: present_flip_notify (present.c:512)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0C9CE1: sna_mode_restore (sna_display.c:6387)
==12934==    by 0xC0CA606: sna_page_flip (sna_display.c:6539)
==12934==    by 0xC1A5123: flip (sna_present.c:625)
==12934==    by 0xC1A55B1: sna_present_flip (sna_present.c:760)
==12934==    by 0x2A8659: present_flip (present.c:204)
==12934==    by 0x2A97D2: present_execute (present.c:681)
==12934==  Block was alloc'd at
==12934==    at 0x4C2C947: calloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2A9E30: present_pixmap (present.c:874)
==12934==    by 0x2AC420: proc_present_pixmap (present_request.c:138)
==12934==    by 0x2AC897: proc_present_dispatch (present_request.c:251)
==12934==    by 0x15459A: Dispatch (dispatch.c:430)
==12934==    by 0x163F9C: dix_main (main.c:300)
==12934==    by 0x143D38: main (stubmain.c:34)
==12934== 
==12934== Invalid read of size 8
==12934==    at 0x2A9965: present_execute (present.c:730)
==12934==    by 0x2A8B84: present_re_execute (present.c:350)
==12934==    by 0x2A8BFB: present_flip_try_ready (present.c:360)
==12934==    by 0x2A91F4: present_flip_notify (present.c:514)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0D55C3: sna_wakeup_handler (sna_driver.c:735)
==12934==    by 0x164E85: WakeupHandler (dixutils.c:426)
==12934==    by 0x363B91: WaitForSomething (WaitFor.c:230)
==12934==    by 0x154375: Dispatch (dispatch.c:359)
==12934==    by 0x163F9C: dix_main (main.c:300)
==12934==  Address 0x1701ba10 is 96 bytes inside a block of size 176 free'd
==12934==    at 0x4C2BCEA: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2AA52B: present_vblank_destroy (present.c:1057)
==12934==    by 0x2A91E8: present_flip_notify (present.c:512)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0C9CE1: sna_mode_restore (sna_display.c:6387)
==12934==    by 0xC0CA606: sna_page_flip (sna_display.c:6539)
==12934==    by 0xC1A5123: flip (sna_present.c:625)
==12934==    by 0xC1A55B1: sna_present_flip (sna_present.c:760)
==12934==    by 0x2A8659: present_flip (present.c:204)
==12934==    by 0x2A97D2: present_execute (present.c:681)
==12934==  Block was alloc'd at
==12934==    at 0x4C2C947: calloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2A9E30: present_pixmap (present.c:874)
==12934==    by 0x2AC420: proc_present_pixmap (present_request.c:138)
==12934==    by 0x2AC897: proc_present_dispatch (present_request.c:251)
==12934==    by 0x15459A: Dispatch (dispatch.c:430)
==12934==    by 0x163F9C: dix_main (main.c:300)
==12934==    by 0x143D38: main (stubmain.c:34)
==12934== 
==12934== Invalid read of size 8
==12934==    at 0x2A996D: present_execute (present.c:730)
==12934==    by 0x2A8B84: present_re_execute (present.c:350)
==12934==    by 0x2A8BFB: present_flip_try_ready (present.c:360)
==12934==    by 0x2A91F4: present_flip_notify (present.c:514)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0D55C3: sna_wakeup_handler (sna_driver.c:735)
==12934==    by 0x164E85: WakeupHandler (dixutils.c:426)
==12934==    by 0x363B91: WaitForSomething (WaitFor.c:230)
==12934==    by 0x154375: Dispatch (dispatch.c:359)
==12934==    by 0x163F9C: dix_main (main.c:300)
==12934==  Address 0x1701b9f8 is 72 bytes inside a block of size 176 free'd
==12934==    at 0x4C2BCEA: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2AA52B: present_vblank_destroy (present.c:1057)
==12934==    by 0x2A91E8: present_flip_notify (present.c:512)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0C9CE1: sna_mode_restore (sna_display.c:6387)
==12934==    by 0xC0CA606: sna_page_flip (sna_display.c:6539)
==12934==    by 0xC1A5123: flip (sna_present.c:625)
==12934==    by 0xC1A55B1: sna_present_flip (sna_present.c:760)
==12934==    by 0x2A8659: present_flip (present.c:204)
==12934==    by 0x2A97D2: present_execute (present.c:681)
==12934==  Block was alloc'd at
==12934==    at 0x4C2C947: calloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2A9E30: present_pixmap (present.c:874)
==12934==    by 0x2AC420: proc_present_pixmap (present_request.c:138)
==12934==    by 0x2AC897: proc_present_dispatch (present_request.c:251)
==12934==    by 0x15459A: Dispatch (dispatch.c:430)
==12934==    by 0x163F9C: dix_main (main.c:300)
==12934==    by 0x143D38: main (stubmain.c:34)
==12934== 
==12934== Syscall param msync(start) points to uninitialised byte(s)
==12934==    at 0x6A7AAED: ??? (in /usr/lib/libc-2.23.so)
==12934==    by 0x5570201: ??? (in /usr/lib/libunwind.so.8.0.1)
==12934==    by 0x5573CD6: ??? (in /usr/lib/libunwind.so.8.0.1)
==12934==    by 0x557421D: ??? (in /usr/lib/libunwind.so.8.0.1)
==12934==    by 0x5574578: ??? (in /usr/lib/libunwind.so.8.0.1)
==12934==    by 0x5570C10: _ULx86_64_step (in /usr/lib/libunwind.so.8.0.1)
==12934==    by 0x3684C8: xorg_backtrace (backtrace.c:100)
==12934==    by 0xC1A4897: sna_present_queue_vblank (sna_present.c:356)
==12934==    by 0x2A8A03: present_queue_vblank (present.c:307)
==12934==    by 0x2A997C: present_execute (present.c:730)
==12934==    by 0x2A8B84: present_re_execute (present.c:350)
==12934==    by 0x2A8BFB: present_flip_try_ready (present.c:360)
==12934==  Address 0xfff000000 is on thread 1's stack
==12934== 
==12934== Invalid write of size 8
==12934==    at 0x2A7F9B: __xorg_list_add (list.h:133)
==12934==    by 0x2A7FF2: xorg_list_add (list.h:156)
==12934==    by 0x2A9997: present_execute (present.c:734)
==12934==    by 0x2A8B84: present_re_execute (present.c:350)
==12934==    by 0x2A8BFB: present_flip_try_ready (present.c:360)
==12934==    by 0x2A91F4: present_flip_notify (present.c:514)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0D55C3: sna_wakeup_handler (sna_driver.c:735)
==12934==    by 0x164E85: WakeupHandler (dixutils.c:426)
==12934==    by 0x363B91: WaitForSomething (WaitFor.c:230)
==12934==  Address 0x1701b9c0 is 16 bytes inside a block of size 176 free'd
==12934==    at 0x4C2BCEA: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2AA52B: present_vblank_destroy (present.c:1057)
==12934==    by 0x2A91E8: present_flip_notify (present.c:512)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0C9CE1: sna_mode_restore (sna_display.c:6387)
==12934==    by 0xC0CA606: sna_page_flip (sna_display.c:6539)
==12934==    by 0xC1A5123: flip (sna_present.c:625)
==12934==    by 0xC1A55B1: sna_present_flip (sna_present.c:760)
==12934==    by 0x2A8659: present_flip (present.c:204)
==12934==    by 0x2A97D2: present_execute (present.c:681)
==12934==  Block was alloc'd at
==12934==    at 0x4C2C947: calloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2A9E30: present_pixmap (present.c:874)
==12934==    by 0x2AC420: proc_present_pixmap (present_request.c:138)
==12934==    by 0x2AC897: proc_present_dispatch (present_request.c:251)
==12934==    by 0x15459A: Dispatch (dispatch.c:430)
==12934==    by 0x163F9C: dix_main (main.c:300)
==12934==    by 0x143D38: main (stubmain.c:34)
==12934== 
==12934== Invalid write of size 8
==12934==    at 0x2A7FA6: __xorg_list_add (list.h:134)
==12934==    by 0x2A7FF2: xorg_list_add (list.h:156)
==12934==    by 0x2A9997: present_execute (present.c:734)
==12934==    by 0x2A8B84: present_re_execute (present.c:350)
==12934==    by 0x2A8BFB: present_flip_try_ready (present.c:360)
==12934==    by 0x2A91F4: present_flip_notify (present.c:514)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0D55C3: sna_wakeup_handler (sna_driver.c:735)
==12934==    by 0x164E85: WakeupHandler (dixutils.c:426)
==12934==    by 0x363B91: WaitForSomething (WaitFor.c:230)
==12934==  Address 0x1701b9c8 is 24 bytes inside a block of size 176 free'd
==12934==    at 0x4C2BCEA: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2AA52B: present_vblank_destroy (present.c:1057)
==12934==    by 0x2A91E8: present_flip_notify (present.c:512)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0C9CE1: sna_mode_restore (sna_display.c:6387)
==12934==    by 0xC0CA606: sna_page_flip (sna_display.c:6539)
==12934==    by 0xC1A5123: flip (sna_present.c:625)
==12934==    by 0xC1A55B1: sna_present_flip (sna_present.c:760)
==12934==    by 0x2A8659: present_flip (present.c:204)
==12934==    by 0x2A97D2: present_execute (present.c:681)
==12934==  Block was alloc'd at
==12934==    at 0x4C2C947: calloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2A9E30: present_pixmap (present.c:874)
==12934==    by 0x2AC420: proc_present_pixmap (present_request.c:138)
==12934==    by 0x2AC897: proc_present_dispatch (present_request.c:251)
==12934==    by 0x15459A: Dispatch (dispatch.c:430)
==12934==    by 0x163F9C: dix_main (main.c:300)
==12934==    by 0x143D38: main (stubmain.c:34)
==12934== 
==12934== Invalid write of size 8
==12934==    at 0x2A7F9B: __xorg_list_add (list.h:133)
==12934==    by 0x2A8031: xorg_list_append (list.h:177)
==12934==    by 0x2A99BB: present_execute (present.c:735)
==12934==    by 0x2A8B84: present_re_execute (present.c:350)
==12934==    by 0x2A8BFB: present_flip_try_ready (present.c:360)
==12934==    by 0x2A91F4: present_flip_notify (present.c:514)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0D55C3: sna_wakeup_handler (sna_driver.c:735)
==12934==    by 0x164E85: WakeupHandler (dixutils.c:426)
==12934==    by 0x363B91: WaitForSomething (WaitFor.c:230)
==12934==  Address 0x1701b9b0 is 0 bytes inside a block of size 176 free'd
==12934==    at 0x4C2BCEA: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2AA52B: present_vblank_destroy (present.c:1057)
==12934==    by 0x2A91E8: present_flip_notify (present.c:512)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0C9CE1: sna_mode_restore (sna_display.c:6387)
==12934==    by 0xC0CA606: sna_page_flip (sna_display.c:6539)
==12934==    by 0xC1A5123: flip (sna_present.c:625)
==12934==    by 0xC1A55B1: sna_present_flip (sna_present.c:760)
==12934==    by 0x2A8659: present_flip (present.c:204)
==12934==    by 0x2A97D2: present_execute (present.c:681)
==12934==  Block was alloc'd at
==12934==    at 0x4C2C947: calloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2A9E30: present_pixmap (present.c:874)
==12934==    by 0x2AC420: proc_present_pixmap (present_request.c:138)
==12934==    by 0x2AC897: proc_present_dispatch (present_request.c:251)
==12934==    by 0x15459A: Dispatch (dispatch.c:430)
==12934==    by 0x163F9C: dix_main (main.c:300)
==12934==    by 0x143D38: main (stubmain.c:34)
==12934== 
==12934== Invalid write of size 8
==12934==    at 0x2A7FA6: __xorg_list_add (list.h:134)
==12934==    by 0x2A8031: xorg_list_append (list.h:177)
==12934==    by 0x2A99BB: present_execute (present.c:735)
==12934==    by 0x2A8B84: present_re_execute (present.c:350)
==12934==    by 0x2A8BFB: present_flip_try_ready (present.c:360)
==12934==    by 0x2A91F4: present_flip_notify (present.c:514)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0D55C3: sna_wakeup_handler (sna_driver.c:735)
==12934==    by 0x164E85: WakeupHandler (dixutils.c:426)
==12934==    by 0x363B91: WaitForSomething (WaitFor.c:230)
==12934==  Address 0x1701b9b8 is 8 bytes inside a block of size 176 free'd
==12934==    at 0x4C2BCEA: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2AA52B: present_vblank_destroy (present.c:1057)
==12934==    by 0x2A91E8: present_flip_notify (present.c:512)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0C9CE1: sna_mode_restore (sna_display.c:6387)
==12934==    by 0xC0CA606: sna_page_flip (sna_display.c:6539)
==12934==    by 0xC1A5123: flip (sna_present.c:625)
==12934==    by 0xC1A55B1: sna_present_flip (sna_present.c:760)
==12934==    by 0x2A8659: present_flip (present.c:204)
==12934==    by 0x2A97D2: present_execute (present.c:681)
==12934==  Block was alloc'd at
==12934==    at 0x4C2C947: calloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2A9E30: present_pixmap (present.c:874)
==12934==    by 0x2AC420: proc_present_pixmap (present_request.c:138)
==12934==    by 0x2AC897: proc_present_dispatch (present_request.c:251)
==12934==    by 0x15459A: Dispatch (dispatch.c:430)
==12934==    by 0x163F9C: dix_main (main.c:300)
==12934==    by 0x143D38: main (stubmain.c:34)
==12934== 
==12934== Invalid write of size 4
==12934==    at 0x2A99C0: present_execute (present.c:737)
==12934==    by 0x2A8B84: present_re_execute (present.c:350)
==12934==    by 0x2A8BFB: present_flip_try_ready (present.c:360)
==12934==    by 0x2A91F4: present_flip_notify (present.c:514)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0D55C3: sna_wakeup_handler (sna_driver.c:735)
==12934==    by 0x164E85: WakeupHandler (dixutils.c:426)
==12934==    by 0x363B91: WaitForSomething (WaitFor.c:230)
==12934==    by 0x154375: Dispatch (dispatch.c:359)
==12934==    by 0x163F9C: dix_main (main.c:300)
==12934==  Address 0x1701ba44 is 148 bytes inside a block of size 176 free'd
==12934==    at 0x4C2BCEA: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2AA52B: present_vblank_destroy (present.c:1057)
==12934==    by 0x2A91E8: present_flip_notify (present.c:512)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0C9CE1: sna_mode_restore (sna_display.c:6387)
==12934==    by 0xC0CA606: sna_page_flip (sna_display.c:6539)
==12934==    by 0xC1A5123: flip (sna_present.c:625)
==12934==    by 0xC1A55B1: sna_present_flip (sna_present.c:760)
==12934==    by 0x2A8659: present_flip (present.c:204)
==12934==    by 0x2A97D2: present_execute (present.c:681)
==12934==  Block was alloc'd at
==12934==    at 0x4C2C947: calloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2A9E30: present_pixmap (present.c:874)
==12934==    by 0x2AC420: proc_present_pixmap (present_request.c:138)
==12934==    by 0x2AC897: proc_present_dispatch (present_request.c:251)
==12934==    by 0x15459A: Dispatch (dispatch.c:430)
==12934==    by 0x163F9C: dix_main (main.c:300)
==12934==    by 0x143D38: main (stubmain.c:34)
==12934== 
==12934== Invalid read of size 8
==12934==    at 0x2A9243: present_event_notify (present.c:526)
==12934==    by 0xC1A3F97: vblank_complete (sna_present.c:133)
==12934==    by 0xC1A47F0: sna_present_vblank_handler (sna_present.c:337)
==12934==    by 0xC0D1D9A: sna_mode_wakeup (sna_display.c:9043)
==12934==    by 0xC0CE9BF: sna_mode_reset (sna_display.c:8038)
==12934==    by 0xC0D5B97: sna_leave_vt (sna_driver.c:909)
==12934==    by 0x955C05C: glxDRILeaveVT (glxdri2.c:839)
==12934==    by 0x1C58CD: AbortDDX (xf86Init.c:1099)
==12934==    by 0x37D487: AbortServer (log.c:874)
==12934==    by 0x37DA2C: FatalError (log.c:1015)
==12934==    by 0xC1A3B83: sna_crtc_clear_vblank (sna.h:648)
==12934==    by 0xC1A4FDE: present_flip_handler (sna_present.c:588)
==12934==  Address 0x1701b9c0 is 16 bytes inside a block of size 176 free'd
==12934==    at 0x4C2BCEA: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2AA52B: present_vblank_destroy (present.c:1057)
==12934==    by 0x2A91E8: present_flip_notify (present.c:512)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0C9CE1: sna_mode_restore (sna_display.c:6387)
==12934==    by 0xC0CA606: sna_page_flip (sna_display.c:6539)
==12934==    by 0xC1A5123: flip (sna_present.c:625)
==12934==    by 0xC1A55B1: sna_present_flip (sna_present.c:760)
==12934==    by 0x2A8659: present_flip (present.c:204)
==12934==    by 0x2A97D2: present_execute (present.c:681)
==12934==  Block was alloc'd at
==12934==    at 0x4C2C947: calloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2A9E30: present_pixmap (present.c:874)
==12934==    by 0x2AC420: proc_present_pixmap (present_request.c:138)
==12934==    by 0x2AC897: proc_present_dispatch (present_request.c:251)
==12934==    by 0x15459A: Dispatch (dispatch.c:430)
==12934==    by 0x163F9C: dix_main (main.c:300)
==12934==    by 0x143D38: main (stubmain.c:34)
==12934== 
==12934== Invalid read of size 8
==12934==    at 0x2A9255: present_event_notify (present.c:527)
==12934==    by 0xC1A3F97: vblank_complete (sna_present.c:133)
==12934==    by 0xC1A47F0: sna_present_vblank_handler (sna_present.c:337)
==12934==    by 0xC0D1D9A: sna_mode_wakeup (sna_display.c:9043)
==12934==    by 0xC0CE9BF: sna_mode_reset (sna_display.c:8038)
==12934==    by 0xC0D5B97: sna_leave_vt (sna_driver.c:909)
==12934==    by 0x955C05C: glxDRILeaveVT (glxdri2.c:839)
==12934==    by 0x1C58CD: AbortDDX (xf86Init.c:1099)
==12934==    by 0x37D487: AbortServer (log.c:874)
==12934==    by 0x37DA2C: FatalError (log.c:1015)
==12934==    by 0xC1A3B83: sna_crtc_clear_vblank (sna.h:648)
==12934==    by 0xC1A4FDE: present_flip_handler (sna_present.c:588)
==12934==  Address 0x1701ba10 is 96 bytes inside a block of size 176 free'd
==12934==    at 0x4C2BCEA: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2AA52B: present_vblank_destroy (present.c:1057)
==12934==    by 0x2A91E8: present_flip_notify (present.c:512)
==12934==    by 0x2A92F4: present_event_notify (present.c:534)
==12934==    by 0xC1A4FC3: present_flip_handler (sna_present.c:586)
==12934==    by 0xC0D21E3: sna_mode_wakeup (sna_display.c:9096)
==12934==    by 0xC0C9CE1: sna_mode_restore (sna_display.c:6387)
==12934==    by 0xC0CA606: sna_page_flip (sna_display.c:6539)
==12934==    by 0xC1A5123: flip (sna_present.c:625)
==12934==    by 0xC1A55B1: sna_present_flip (sna_present.c:760)
==12934==    by 0x2A8659: present_flip (present.c:204)
==12934==    by 0x2A97D2: present_execute (present.c:681)
==12934==  Block was alloc'd at
==12934==    at 0x4C2C947: calloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12934==    by 0x2A9E30: present_pixmap (present.c:874)
==12934==    by 0x2AC420: proc_present_pixmap (present_request.c:138)
==12934==    by 0x2AC897: proc_present_dispatch (present_request.c:251)
==12934==    by 0x15459A: Dispatch (dispatch.c:430)
==12934==    by 0x163F9C: dix_main (main.c:300)
==12934==    by 0x143D38: main (stubmain.c:34)
==12934== 
==12934== Warning: noted but unhandled ioctl 0x641f with no size/direction hints.
==12934==    This could cause spurious value errors to appear.
==12934==    See README_MISSING_SYSCALL_OR_IOCTL for guidance on writing a proper wrapper.
==12934== 
==12934== HEAP SUMMARY:
==12934==     in use at exit: 22,849,391 bytes in 85,021 blocks
==12934==   total heap usage: 367,995 allocs, 282,975 frees, 300,188,095 bytes allocated
==12934== 
==12934== LEAK SUMMARY:
==12934==    definitely lost: 9,429 bytes in 25 blocks
==12934==    indirectly lost: 10,167 bytes in 57 blocks
==12934==      possibly lost: 1,885,634 bytes in 9,360 blocks
==12934==    still reachable: 20,944,161 bytes in 75,579 blocks
==12934==                       of which reachable via heuristic:
==12934==                         newarray           : 1,536 bytes in 16 blocks
==12934==         suppressed: 0 bytes in 0 blocks
==12934== Rerun with --leak-check=full to see details of leaked memory
==12934== 
==12934== For counts of detected and suppressed errors, rerun with: -v
==12934== Use --track-origins=yes to see where uninitialised values come from
==12934== ERROR SUMMARY: 51 errors from 24 contexts (suppressed: 0 from 0)