[Bug 91577] [HD Graphics 4000] Segfault accessing rq->bo->handle

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91577

--- Comment #24 from Dominic <fdo-bugs.aspseka at xoxy.net> ---
Sorry for the delay. Here is another trace (without your last modifications,
i.e. at 672436efd5b69fb9007cb80804a351b1e1572b60). Looks like before:

[   555.361] gen6_render_retire: resetting idle vbo
[   555.361] kgem_cleanup_cache
[   555.361] kgem_cleanup_cache: sync on cleanup
[   555.361] kgem_bo_wait: waiting for handle=2
[   555.361] __kgem_retire_requests_upto(handle=2)
[   555.361] __kgem_retire_rq: request 2 complete
[   555.361] kgem_retire, need_retire?=1
[   555.361] __kgem_busy: handle=10, busy=1, wedged=0
[   555.361] kgem_retire__flushing: 15 bo on flushing list
[   555.361] kgem_retire__requests_ring: ring=0, 0 outstanding requests,
oldest=0
[   555.361] __kgem_busy: handle=3, busy=1, wedged=0
[   555.361] kgem_retire__requests_ring: ring=1, 2 outstanding requests,
oldest=3
[   555.361] kgem_retire -- retired=0, need_retire=1
[   555.361] kgem_bo_is_busy: handle=16694, domain: 0 exec? 0, rq? 0
[   555.361] gen6_render_retire: resetting idle vbo
[   555.361] __kgem_bo_clear_busy: handle=3
[   555.361] __kgem_bo_clear_busy: handle=65003
[   555.361] kgem_cleanup_cache: need_expire?=0
[   555.363] __kgem_bo_map__cpu: failed to mmap handle=65127 (prime? 0), 65536
bytes, into CPU domain: 12
[   555.363] _kgem_bo_destroy: handle=65127, proxy? 0
[   555.363] __kgem_bo_destroy: handle=65127, size=65536
[   555.363] __kgem_bo_destroy: handle=65127, purged
[   555.363] kgem_bo_move_to_inactive: moving handle=65127 to inactive
[   555.363] sigtrap_handler(sig=11) sigtrap=0
[   555.365] (EE) 
[   555.366] (EE) Backtrace:
[   555.368] (EE) 0: ? (?+0x1c7e720) [0x2221ba0]
[   555.372] (EE) 1: ? (?+0x1c7e720) [0x7f143827dc0f]
[   555.380] (EE) 2: /lib64/librt.so.1 (?+0x1c7e720) [0x7f1436222094]
[   555.380] (EE) 3: /lib64/librt.so.1 (?+0x1c7e720) [0x7f1436228cde]
[   555.380] (EE) 4: /lib64/librt.so.1 (?+0x1c7e720) [0x7f1436229c43]
[   555.380] (EE) 5: /lib64/librt.so.1 (?+0x1c7e720) [0x7f143622a661]
[   555.380] (EE) 6: /lib64/librt.so.1 (?+0x1c7e720) [0x7f1436262aa5]
[   555.380] (EE) 7: /lib64/librt.so.1 (?+0x1c7e720) [0x7f1436262c74]
[   555.380] (EE) 8: ? (?+0x1c7e720) [0x20bdac0]
[   555.380] (EE) 9: ? (?+0x1c7e720) [0x2221290]
[   555.381] (EE) 10: ? (?+0x1c7e720) [0x20c3900]
[   555.381] (EE) 11: ? (?+0x1c7e720) [0x219aed0]
[   555.381] (EE) 12: ? (?+0x1c7e720) [0x21a0910]
[   555.381] (EE) 13: ? (?+0x1c7e720) [0x21a1270]
[   555.381] (EE) 14: ? (?+0x1c7e720) [0x21a4770]
[   555.381] (EE) 15: ? (?+0x1c7e720) [0x20b4270]
[   555.381] (EE) 16: ? (?+0x1c7e720) [0x20b8370]
[   555.381] (EE) 17: ? (?+0x1c7e720) [0x20bc3d0]
[   555.381] (EE) 18: ? (?+0x1c7e720) [0x7f143826ad60]
[   555.381] (EE) 19: ? (?+0x1c7e720) [0x20a6550]
[   555.385] (EE) 20: ? (?+0x1c7e720) [0x1c7e720]
[   555.385] (EE) 
[   555.385] (EE) Segmentation fault at address 0x80
[   555.385] (EE) 
Fatal server error:
[   555.385] (EE) Caught signal 11 (Segmentation fault). Server aborting

There was somewhere over 47k objects in use at that time.

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