[Bug 105509] SIGBUS, Bus error during command buffer recording

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Thu Mar 15 12:03:38 UTC 2018


https://bugs.freedesktop.org/show_bug.cgi?id=105509

--- Comment #2 from Vyacheslav <ytriffy at gmail.com> ---
I recompiled mesa with --enable-debug and now I get assert failed which is more
useful.

0  in raise of /usr/lib/libc.so.6
1  in abort of /usr/lib/libc.so.6
2  in __assert_fail_base of /usr/lib/libc.so.6
3  in __assert_fail of /usr/lib/libc.so.6
4  in anv_block_pool_expand_range of vulkan/anv_allocator.c:327
5  in anv_block_pool_grow of vulkan/anv_allocator.c:521
6  in anv_block_pool_alloc_new of vulkan/anv_allocator.c:564
7  in anv_block_pool_alloc of vulkan/anv_allocator.c:582
8  in anv_fixed_size_state_pool_alloc_new of vulkan/anv_allocator.c:655
9  in anv_state_pool_alloc_no_vg of vulkan/anv_allocator.c:772
10 in anv_state_stream_alloc of vulkan/anv_allocator.c:909
11 in anv_cmd_buffer_alloc_dynamic_state of vulkan/anv_batch_chain.c:654
12 in anv_cmd_buffer_push_constants of vulkan/anv_cmd_buffer.c:729
13 in cmd_buffer_flush_push_constants of vulkan/genX_cmd_buffer.c:2420
14 in gen9_cmd_buffer_flush_state of vulkan/genX_cmd_buffer.c:2571
15 in gen9_CmdDrawIndexed of vulkan/genX_cmd_buffer.c:2709

This assert fails:
assert(size - center_bo_offset <=
          BLOCK_POOL_MEMFD_SIZE - BLOCK_POOL_MEMFD_CENTER);
Because size=1073741824 is more than 1GB and block pools are restricted by 1GB:
/* Block pools are backed by a fixed-size 1GB memfd */
#define BLOCK_POOL_MEMFD_SIZE (1ul << 30)

Still don't know how to fix it. Is it valid behavior? Why it's not handled by
validation layers? Should I use a new command pool for next portion of objects?

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