Commit 929fcee47e46781c57f2a354ce0a013915c033d1 introduced code that
attempts to unlock an unlocked mutex which is undefined behaviour.
On OpenBSD this leads to an abort:
0 0x0000124dadfa96ba in thrkill () at <stdin>:2
1 0x0000124dadf3da39 in *_libc_abort () at /usr/src/lib/libc/stdlib/abort.c:52
2 0x0000124d2c1165b5 in *_libpthread_pthread_mutex_unlock (mutexp=<optimized
out>)
at /usr/src/lib/librthread/rthread_sync.c:221
3 0x0000124d279c02e4 in init_attrib_groups (ctx=0x124df0fda000) at
main/context.c:825
4 _mesa_initialize_context (ctx=ctx@entry=0x124df0fda000,
api=api@entry=API_OPENGL_CORE,
visual=visual@entry=0x7f7ffffbdfd0, share_list=share_list@entry=0x0,
driverFunctions=driverFunctions@entry=0x7f7ffffbda60) at main/context.c:1204
5 0x0000124d27b507ec in st_create_context (api=api@entry=API_OPENGL_CORE,
pipe=pipe@entry=0x124dc4910000, visual=visual@entry=0x7f7ffffbdfd0,
share=share@entry=0x0, options=options@entry=0x7f7ffffbe128)
at state_tracker/st_context.c:545
6 0x0000124d27b8639f in st_api_create_context (stapi=<optimized out>,
smapi=0x124d1b608800, attribs=0x7f7ffffbe100, error=0x7f7ffffbe0fc,
shared_stctxi=0x0)
at state_tracker/st_manager.c:669
7 0x0000124d27cc5b9c in dri_create_context (api=<optimized out>,
visual=0x124d8a0f8a00,
cPriv=0x124de473f240, major_version=<optimized out>,
minor_version=<optimized out>,
flags=<optimized out>, notify_reset=false, error=0x7f7ffffbe2b4,
sharedContextPrivate=0x0) at dri_context.c:123
8 0x0000124d27cc5029 in driCreateContextAttribs (screen=0x124d8a0f8400,
api=<optimized out>, config=0x124d8a0f8a00, shared=<optimized out>,
num_attribs=<optimized out>, attribs=<optimized out>, error=0x7f7ffffbe2b4,
data=0x124d77814a00) at dri_util.c:448
9 0x0000124d8e109b00 in drisw_create_context_attribs (base=0x124df3e08700,
config_base=0x124d7a0e7300, shareList=<optimized out>,
num_attribs=<optimized out>,
attribs=<optimized out>, error=0x7f7ffffbe2b4) at drisw_glx.c:476
10 0x0000124d8e104b4a in glXCreateContextAttribsARB (dpy=0x124d533f0000,
config=0x124d7a0e7300, share_context=0x0, direct=1,
attrib_list=0x7f7ffffbe300)
at create_context.c:78
Signed-off-by: Jonathan Gray <j...@jsg.id.au>
---
src/mesa/main/debug_output.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/src/mesa/main/debug_output.c b/src/mesa/main/debug_output.c
index 48dbbb3..bc933db 100644
--- a/src/mesa/main/debug_output.c
+++ b/src/mesa/main/debug_output.c
@@ -1282,14 +1282,13 @@ _mesa_init_debug_output(struct gl_context *ctx)
*/
struct gl_debug_state *debug = _mesa_lock_debug_state(ctx);
if (!debug) {
- goto done;
+ return;
}
debug->DebugOutput = GL_TRUE;
debug->LogToStderr = GL_TRUE;
ctx->Const.ContextFlags |= GL_CONTEXT_FLAG_DEBUG_BIT;
+ _mesa_unlock_debug_state(ctx);
}
-done:
- _mesa_unlock_debug_state(ctx);
}
--
2.10.2
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