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User who did this - Uli Schlachter (psychon)
Attached to Project - awesome
Summary - unprotected error in call to Lua API
Task Type - Bug Report
Category - Core
Status - New
Assigned To - Julien Danjou
Operating System - All
Severity - Medium
Priority - High
Reported Version - git/master
Due in Version - Undecided
Due Date - Undecided
Details - Hi,
my (git master) awesome crashes randomely saying something about
W: awesome: luaA_panic:676: unprotected error in call to Lua API (trying to emit signal on non-object), restarting awesome
I added a backtrace dump (worth a patch?) to luaA_panic() and here is the
result:
E: awesome: luaA_panic:678: dumping backtrace
/home/psychon/projects/awesome/awesome(backtrace_get+0x26) [0x434886]
/home/psychon/projects/awesome/awesome [0x424231]
/usr/lib/liblua5.1.so.0 [0x300580c8fe]
/usr/lib/liblua5.1.so.0(lua_error+0x9) [0x3005807e89]
/usr/lib/liblua5.1.so.0(luaL_error+0xc2) [0x3005819042]
/home/psychon/projects/awesome/awesome(luaA_object_emit_signal+0x2d8) [0x4354b8]
/home/psychon/projects/awesome/awesome [0x41a282]
/home/psychon/projects/awesome/awesome [0x41a3d3]
/home/psychon/projects/awesome/awesome [0x40ec9a]
/usr/lib/libev.so.3(ev_invoke_pending+0x61) [0x3004c03481]
/usr/lib/libev.so.3(ev_loop+0x84c) [0x3004c081bc]
/home/psychon/projects/awesome/awesome(main+0x887) [0x40fa67]
/lib/libc.so.6(__libc_start_main+0xfd) [0x7f1f2d549a8d]
/home/psychon/projects/awesome/awesome [0x40ea79]
Via 'objdump -S awesome' I found the following symbols (kids, don't try this at
home!):
/home/psychon/projects/awesome/awesome(backtrace_get+0x26) [0x434886] <- that
symbol is correct
/home/psychon/projects/awesome/awesome [0x424231] <- this is luaA_panic
/usr/lib/liblua5.1.so.0 [0x300580c8fe]
/usr/lib/liblua5.1.so.0(lua_error+0x9) [0x3005807e89]
/usr/lib/liblua5.1.so.0(luaL_error+0xc2) [0x3005819042]
/home/psychon/projects/awesome/awesome(luaA_object_emit_signal+0x2d8) [0x4354b8]
<- seems correct too
/home/psychon/projects/awesome/awesome [0x41a282] <- event_handle_widget_motionnotify,
this seems to be luaA_object_emit_signal(globalconf.L, -1, "mouse::leave", 0);
/home/psychon/projects/awesome/awesome [0x41a3d3] <- event_handle_motionnotify
/home/psychon/projects/awesome/awesome [0x40ec9a] <- other, boring stuff. If
you really want, I can find out which function this is
/usr/lib/libev.so.3(ev_invoke_pending+0x61) [0x3004c03481]
/usr/lib/libev.so.3(ev_loop+0x84c) [0x3004c081bc]
/home/psychon/projects/awesome/awesome(main+0x887) [0x40fa67]
/lib/libc.so.6(__libc_start_main+0xfd) [0x7f1f2d549a8d]
/home/psychon/projects/awesome/awesome [0x40ea79]
jd: Could you please take a closer look at the code in
event_handle_widget_motionnoty() and find a bug or alternatively tell me how to
debug this further.
Oh and: These crashes happen really randomely and I don't have a test case for
this. :(
Uli
More information can be found at the following URL:
http://awesome.naquadah.org/bugs/index.php?do=details&task_id=679
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