<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - xcb_wait_for_reply makes valgrind report memory leaks on Mesa driver" href="https://bugs.freedesktop.org/show_bug.cgi?id=105237#c2">Comment # 2</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - xcb_wait_for_reply makes valgrind report memory leaks on Mesa driver" href="https://bugs.freedesktop.org/show_bug.cgi?id=105237">bug 105237</a> from <a class="email" href="mailto:max.filippenko@gmail.com" title="Maxim Filippenko <max.filippenko@gmail.com>"> Maxim Filippenko</a> <pre>I have a similar problem in my project. I build last xcb (version 1.12) and mesa (version 17.2.0-devel) with -ggdb and -fsanitize=address (use gcc sanitizer). Indirect leak of 689436 byte(s) in 19151 object(s) allocated from: #0 0x7f9af0728602 in malloc (/usr/lib/x86_64-linux-gnu/libasan.so.2+0x98602) #1 0x7f9aec122424 in read_packet /home/filippenko/Soft/libxcb-1.12/src/xcb_in.c:259 #2 0x7f9aec12613a in _xcb_in_read /home/filippenko/Soft/libxcb-1.12/src/xcb_in.c:1012 #3 0x7f9aec11e560 in _xcb_conn_wait /home/filippenko/Soft/libxcb-1.12/src/xcb_conn.c:515 #4 0x7f9aec1238bd in wait_for_reply /home/filippenko/Soft/libxcb-1.12/src/xcb_in.c:516 #5 0x7f9aec123b0a in xcb_wait_for_reply /home/filippenko/Soft/libxcb-1.12/src/xcb_in.c:546 #6 0x7f9ae9faf64e in xcb_dri2_swap_buffers_reply /home/filippenko/Soft/libxcb-1.12/src/dri2.c:893 #7 0x7f9aeec7cbcb in dri2_x11_swap_buffers_msc (lib/libEGL.so.1+0x1bbcb) #8 0x7f9aeec7ccce in dri2_x11_swap_buffers (lib/libEGL.so.1+0x1bcce) #9 0x7f9aeec77e89 in dri2_swap_buffers (lib/libEGL.so.1+0x16e89) #10 0x7f9aeec6b202 in eglSwapBuffers (lib/libEGL.so.1+0xa202) Inside method xcb_wait_for_reply events are added to the linked list, but nobody reads this list. I tried to add a cleanup of this list: ============================================= diff --git a/src/egl/drivers/dri2/platform_x11.c b/src/egl/drivers/dri2/platform_x11.c index b01f739..1d1271d 100644 --- a/src/egl/drivers/dri2/platform_x11.c +++ b/src/egl/drivers/dri2/platform_x11.c @@ -869,6 +869,12 @@ dri2_x11_swap_buffers_msc(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw, reply = xcb_dri2_swap_buffers_reply(dri2_dpy->conn, cookie, NULL); + xcb_generic_event_t * event = xcb_poll_for_event(dri2_dpy->conn); + while (event) { + free(event); + event = xcb_poll_for_event(dri2_dpy->conn); + } + if (reply) { swap_count = (((int64_t)reply->swap_hi) << 32) | reply->swap_lo; free(reply); =============================================== After that the problem (memory leak) is not observed yet.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>