On Fri, 27 May 2016 16:04:46 +1200 Carlin Bingham <c...@viennan.net> wrote:
> On Fri, May 27, 2016 at 01:07:09AM +0200, Theo Buehler wrote: > > On Thu, May 26, 2016 at 05:54:30PM -0400, Andre Smagin wrote: > > > On Sat, 14 May 2016 21:01:29 +0200 (CEST) > > > danj+o...@chown.me wrote: > > > > > > > >Synopsis: radeon(4) drm crashing on current/amd64 > > > [...] > > > > drm:pid77501:radeon_fence_wait_empty_locked *ERROR* error waiting for > > > > ring[3] to become idle (-1601868) > > > > > > > > > I am seeing the same issue, very infrequently (may be once every week or > > > two): > > > > > > drm:pid55825:radeon_fence_wait_empty_locked *ERROR* error waiting for > > > ring[3] to become idle (-6007676) > > > i3(49392): syscall 97 "inet" > > > > > > Not sure what happens to i3 as X crashes, but I get that pledge message > > > every time. > > > (Previously mentioned i3 to dcoppa, but before realizing it was related > > > to radeon issue.) > > > > I combed through the i3 source code hoping to get an indication what > > might be the cause for that socket(2) call breaking a pledge promise i3. > > I couldn't find anything: all socket calls are with AF_LOCAL that should > > be covered by the "unix" pledge. > > > > Without seeing a ktrace output, I don't think I can make any progress > > here. > > > > i3's restore_xcb_check_cb() (src/restore_layout.c), if it sees that the > connection to X has been lost, it calls restore_connect() which calls > libxcb's xcb_connect(). > > In libxcb that calls xcb_connect_to_display_with_auth_info() which calls > _xcb_open(), which calls _xcb_open_unix() and ususally that would be it, > but if opening the unix socket fails (beause X has fallen over) it tries > again to connect by calling _xcb_open_tcp() which sets up an AF_INET > addrinfo and passes that to _xcb_socket()... and you can probably guess > what happens next. > -- > Carlin The backtrace from the i3 core file seems to show exactly that. (did not think about posting it, had a tunnel vision about the radeon crash) (gdb) bt #0 0x000000bceb60267a in socket () at <stdin>:2 #1 0x000000bd55bf8bfb in _xcb_socket (family=2, type=1, proto=6) at /build/openbsd/current/xenocara/lib/libxcb/libxcb/../../../dist/libxcb/src/xcb_util.c:315 #2 0x000000bd55bf8d2e in _xcb_open_tcp (host=0xbd55cfdd78 "localhost", protocol=Variable "protocol" is not available. ) at /build/openbsd/current/xenocara/lib/libxcb/libxcb/../../../dist/libxcb/src/xcb_util.c:387 #3 0x000000bd55bf91cd in xcb_connect_to_display_with_auth_info (displayname=Variable "displayname" is not available. ) at /build/openbsd/current/xenocara/lib/libxcb/libxcb/../../../dist/libxcb/src/xcb_util.c:302 #4 0x000000ba6354885d in ipc_new_client () from /usr/local/bin/i3 #5 0x000000ba63548a51 in ipc_new_client () from /usr/local/bin/i3 #6 0x000000bd56d54fae in ev_invoke_pending () from /usr/local/lib/libev.so.3.1 #7 0x000000bd56d595e5 in ev_run () from /usr/local/lib/libev.so.3.1 #8 0x000000ba6352bea8 in memmem () from /usr/local/bin/i3 #9 0x000000ba63512b12 in ?? () from /usr/local/bin/i3 #10 0x0000000000000000 in ?? () Current language: auto; currently asm
