Occasional crash on mouseover - double free or corruption #1117

MatthewLavine · 2018-03-23T22:38:30Z

Compiled at commit: 55331d1

My polybar regularly crashes on two of my machines with the following stack trace. It seems to be triggered when I mouse over the bar. I cannot reproduce this issue on demand but it happens at least twice a day.

*** Error in `polybar': double free or corruption (!prev): 0x000055ec7e1e6250 ***
======= Backtrace: =========
/lib/x86_64-linux-gnu/libc.so.6(+0x70bcb)[0x7f34d5e21bcb]
/lib/x86_64-linux-gnu/libc.so.6(+0x76f96)[0x7f34d5e27f96]
/lib/x86_64-linux-gnu/libc.so.6(+0x777de)[0x7f34d5e287de]
polybar(_ZN7polybar18v3_1_0_73_g55331d13bar6handleERKN3xpp1x5event13motion_notifyIRNS0_10connectionEEE+0x2a1)[0x55ec7dd462f1]
polybar(_ZNK3xpp1x5event10dispatcherIRN7polybar18v3_1_0_73_g55331d110connectionEEclINS_5event8registryIS6_JNS_5randr9extensionENS_3xkb9extensionEEE7handlerEEEbT_RKSt10shared_ptrI19xcb_generic_event_tE+0x130b)[0x55ec7de4f49b]
polybar(_ZNK7polybar18v3_1_0_73_g55331d110connection14dispatch_eventERKSt10shared_ptrI19xcb_generic_event_tE+0x26)[0x55ec7de4ae76]
polybar(_ZN7polybar18v3_1_0_73_g55331d110controller11read_eventsEv+0x429)[0x55ec7dd7d7c9]
polybar(_ZN7polybar18v3_1_0_73_g55331d110controller3runEbNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x757)[0x55ec7dd83157]
polybar(main+0x1b98)[0x55ec7dd35d58]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf1)[0x7f34d5dd12b1]
polybar(_start+0x2a)[0x55ec7dd37d7a]

The text was updated successfully, but these errors were encountered:

NBonaparte · 2018-03-23T23:08:17Z

I've observed this too and seems to be caused only when cursor options are set. I could not reproduce it reliably either, so fixing it is currently at an impasse. If anyone can get this to reproduce reliably, please let us know.

MatthewLavine · 2018-03-23T23:11:57Z

:(

Is there any debug info I could provide that you haven't already seen for this? A trace?

NBonaparte · 2018-03-23T23:20:57Z

I actually don't have a backtrace with line numbers (must have deleted it by accident), and considering how hard it is to reproduce it, getting as much data as possible will be helpful.

MatthewLavine · 2018-03-23T23:24:11Z

I'll generate a backtrace with numbers. From the output above it seems the issue is within this function:

https://github.com/jaagr/polybar/blob/692e6d9b4a2e023804353dee430b865dfedccd78/src/components/bar.cpp#L612

MatthewLavine · 2018-03-23T23:48:26Z

From a run with -log=trace. This one ended up with 'malloc(): memory corruption' interestingly enough.

$ ./polybar -r laptop -log trace
<snip>
polybar|trace: bar: Detected motion: 0 at pos(163, 0)
polybar|trace: Found matching input area
polybar|trace: Found matching input area
polybar|trace: Found matching input area
polybar|info:  module/cpu: Rebuilding cache
polybar|info:  module/memory: Rebuilding cache
polybar|info:  Redrawing bar window
polybar|trace: bar: Detected motion: 0 at pos(163, 0)
polybar|trace: renderer: flush(1 geom=544x27+0+0, falloff=0)
polybar|trace: renderer: flush(3 geom=1010x27+874+0, falloff=0)                                                                             
*** Error in `./polybar': malloc(): memory corruption: 0x000055f2265f0f30 ***
======= Backtrace: =========
/lib/x86_64-linux-gnu/libc.so.6(+0x70bcb)[0x7fc50f02fbcb]
/lib/x86_64-linux-gnu/libc.so.6(+0x76f96)[0x7fc50f035f96]
/lib/x86_64-linux-gnu/libc.so.6(+0x79059)[0x7fc50f038059]
/lib/x86_64-linux-gnu/libc.so.6(__libc_malloc+0x54)[0x7fc50f039f34]
/lib/x86_64-linux-gnu/libc.so.6(_IO_file_doallocate+0x72)[0x7fc50f025a32]
/lib/x86_64-linux-gnu/libc.so.6(_IO_doallocbuf+0x46)[0x7fc50f033a46]
/lib/x86_64-linux-gnu/libc.so.6(_IO_file_seekoff+0x173)[0x7fc50f030de3]
/lib/x86_64-linux-gnu/libc.so.6(_IO_file_attach+0x72)[0x7fc50f032842]
/lib/x86_64-linux-gnu/libc.so.6(vdprintf+0x65)[0x7fc50f02ec75]
/lib/x86_64-linux-gnu/libc.so.6(dprintf+0x87)[0x7fc50f00e447]
./polybar(_ZNK7polybar22v3_1_0_73_g55331d1_git6logger6outputIJEEEvNS0_8loglevelENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEDpT_+0xca)[0x55f224cb2e76]
./polybar(_ZNK7polybar22v3_1_0_73_g55331d1_git6logger5traceIJEEEvNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEDpT_+0x39)[0x55f224cb27e9]
./polybar(_ZN7polybar22v3_1_0_73_g55331d1_git3bar6handleERKN3xpp1x5event13motion_notifyIRNS0_10connectionEEE+0x254)[0x55f224cc562c]
./polybar(_ZN3xpp5event6detail10dispatcher8dispatchINS_1x5event13motion_notifyIRN7polybar22v3_1_0_73_g55331d1_git10connectionEEEEEvRKT_+0x68)[0x55f224e41562]
./polybar(_ZNK3xpp5event8registryIRN7polybar22v3_1_0_73_g55331d1_git10connectionEJNS_5randr9extensionENS_3xkb9extensionEEE6handleINS_1x5event13motion_notifyIS5_EEEEvRKT_+0x99)[0x55f224e3dc09]
./polybar(_ZNK3xpp5event8registryIRN7polybar22v3_1_0_73_g55331d1_git10connectionEJNS_5randr9extensionENS_3xkb9extensionEEE7handlerclINS_1x5event13motion_notifyIS5_EEEEvRKT_+0x26)[0x55f224e3b224]
./polybar(_ZNK3xpp1x5event10dispatcherIRN7polybar22v3_1_0_73_g55331d1_git10connectionEEclINS_5event8registryIS6_JNS_5randr9extensionENS_3xkb9extensionEEE7handlerEEEbT_RKSt10shared_ptrI19xcb_generic_event_tE+0x1f4)[0x55f224e39aaa]
./polybar(_ZNK3xpp5event8registryIRN7polybar22v3_1_0_73_g55331d1_git10connectionEJNS_5randr9extensionENS_3xkb9extensionEEE8dispatchINS_1x9extensionEEEbRKSt10shared_ptrI19xcb_generic_event_tE+0x3b)[0x55f224e393e1]
./polybar(_ZNK3xpp5event8registryIRN7polybar22v3_1_0_73_g55331d1_git10connectionEJNS_5randr9extensionENS_3xkb9extensionEEE8dispatchINS_1x9extensionES7_JS9_EEEbRKSt10shared_ptrI19xcb_generic_event_tE+0x23)[0x55f224e38d5d]
./polybar(_ZNK3xpp5event8registryIRN7polybar22v3_1_0_73_g55331d1_git10connectionEJNS_5randr9extensionENS_3xkb9extensionEEE8dispatchERKSt10shared_ptrI19xcb_generic_event_tE+0x23)[0x55f224e385b3]
./polybar(_ZNK7polybar22v3_1_0_73_g55331d1_git10connection14dispatch_eventERKSt10shared_ptrI19xcb_generic_event_tE+0x27)[0x55f224e3787f]
./polybar(_ZN7polybar22v3_1_0_73_g55331d1_git10controller11read_eventsEv+0xa53)[0x55f224d13d99]
./polybar(_ZN7polybar22v3_1_0_73_g55331d1_git10controller3runEbNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x579)[0x55f224d12d17]
./polybar(main+0x267a)[0x55f224d64bb5]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf1)[0x7fc50efdf2b1]
./polybar(_start+0x2a)[0x55f224ca63aa]

MatthewLavine · 2018-03-24T04:01:41Z

Got a backtrace and gdb stack trace:

======= Backtrace: =========
/lib/x86_64-linux-gnu/libc.so.6(+0x70bcb)[0x7ffff495bbcb]
/lib/x86_64-linux-gnu/libc.so.6(+0x76f96)[0x7ffff4961f96]
/lib/x86_64-linux-gnu/libc.so.6(+0x78091)[0x7ffff4963091]
/home/matthewlavine/workspace/polybar/build/bin/polybar(_ZN9__gnu_cxx13new_allocatorIN7polybar22v3_1_0_73_g55331d1_git12action_blockEE10deallocateEPS3_m+0x20)[0x555555970c10]
/home/matthewlavine/workspace/polybar/build/bin/polybar(_ZNSt16allocator_traitsISaIN7polybar22v3_1_0_73_g55331d1_git12action_blockEEE10deallocateERS3_PS2_m+0x2b)[0x55555596e249]
/home/matthewlavine/workspace/polybar/build/bin/polybar(_ZNSt12_Vector_baseIN7polybar22v3_1_0_73_g55331d1_git12action_blockESaIS2_EE13_M_deallocateEPS2_m+0x32)[0x55555596a42a]
/home/matthewlavine/workspace/polybar/build/bin/polybar(_ZNSt12_Vector_baseIN7polybar22v3_1_0_73_g55331d1_git12action_blockESaIS2_EED1Ev+0x52)[0x55555595c7ae]
/home/matthewlavine/workspace/polybar/build/bin/polybar(_ZNSt6vectorIN7polybar22v3_1_0_73_g55331d1_git12action_blockESaIS2_EED1Ev+0x41)[0x555555953b99]
/home/matthewlavine/workspace/polybar/build/bin/polybar(_ZN7polybar22v3_1_0_73_g55331d1_git3bar6handleERKN3xpp1x5event13motion_notifyIRNS0_10connectionEEE+0x2bb)[0x555555945693]
/home/matthewlavine/workspace/polybar/build/bin/polybar(_ZN3xpp5event6detail10dispatcher8dispatchINS_1x5event13motion_notifyIRN7polybar22v3_1_0_73_g55331d1_git10connectionEEEEEvRKT_+0x68)[0x555555ac1562]
/home/matthewlavine/workspace/polybar/build/bin/polybar(_ZNK3xpp5event8registryIRN7polybar22v3_1_0_73_g55331d1_git10connectionEJNS_5randr9extensionENS_3xkb9extensionEEE6handleINS_1x5event13motion_notifyIS5_EEEEvRKT_+0x99)[0x555555abdc09]
/home/matthewlavine/workspace/polybar/build/bin/polybar(_ZNK3xpp5event8registryIRN7polybar22v3_1_0_73_g55331d1_git10connectionEJNS_5randr9extensionENS_3xkb9extensionEEE7handlerclINS_1x5event13motion_notifyIS5_EEEEvRKT_+0x26)[0x555555abb224]
/home/matthewlavine/workspace/polybar/build/bin/polybar(_ZNK3xpp1x5event10dispatcherIRN7polybar22v3_1_0_73_g55331d1_git10connectionEEclINS_5event8registryIS6_JNS_5randr9extensionENS_3xkb9extensionEEE7handlerEEEbT_RKSt10shared_ptrI19xcb_generic_event_tE+0x1f4)[0x555555ab9aaa]
/home/matthewlavine/workspace/polybar/build/bin/polybar(_ZNK3xpp5event8registryIRN7polybar22v3_1_0_73_g55331d1_git10connectionEJNS_5randr9extensionENS_3xkb9extensionEEE8dispatchINS_1x9extensionEEEbRKSt10shared_ptrI19xcb_generic_event_tE+0x3b)[0x555555ab93e1]
/home/matthewlavine/workspace/polybar/build/bin/polybar(_ZNK3xpp5event8registryIRN7polybar22v3_1_0_73_g55331d1_git10connectionEJNS_5randr9extensionENS_3xkb9extensionEEE8dispatchINS_1x9extensionES7_JS9_EEEbRKSt10shared_ptrI19xcb_generic_event_tE+0x23)[0x555555ab8d5d]
/home/matthewlavine/workspace/polybar/build/bin/polybar(_ZNK3xpp5event8registryIRN7polybar22v3_1_0_73_g55331d1_git10connectionEJNS_5randr9extensionENS_3xkb9extensionEEE8dispatchERKSt10shared_ptrI19xcb_generic_event_tE+0x23)[0x555555ab85b3]
/home/matthewlavine/workspace/polybar/build/bin/polybar(_ZNK7polybar22v3_1_0_73_g55331d1_git10connection14dispatch_eventERKSt10shared_ptrI19xcb_generic_event_tE+0x27)[0x555555ab787f]
/home/matthewlavine/workspace/polybar/build/bin/polybar(_ZN7polybar22v3_1_0_73_g55331d1_git10controller11read_eventsEv+0xa53)[0x555555993d99]
/home/matthewlavine/workspace/polybar/build/bin/polybar(_ZN7polybar22v3_1_0_73_g55331d1_git10controller3runEbNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x579)[0x555555992d17]
/home/matthewlavine/workspace/polybar/build/bin/polybar(main+0x267a)[0x5555559e4bb5]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf1)[0x7ffff490b2b1]
/home/matthewlavine/workspace/polybar/build/bin/polybar(_start+0x2a)[0x5555559263aa]

(gdb) bt full
#0  0x00007ffff491dfcf in raise () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#1  0x00007ffff491f3fa in abort () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#2  0x00007ffff495bbd0 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#3  0x00007ffff4961f96 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#4  0x00007ffff4963091 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#5  0x0000555555970c10 in __gnu_cxx::new_allocator<polybar::v3_1_0_73_g55331d1_git::action_block>::deallocate (this=0x7fffffff96f0, __p=0x555555eaef70)
    at /usr/include/c++/7/ext/new_allocator.h:125
No locals.
#6  0x000055555596e249 in std::allocator_traits<std::allocator<polybar::v3_1_0_73_g55331d1_git::action_block> >::deallocate (__a=..., __p=0x555555eaef70, __n=8)
    at /usr/include/c++/7/bits/alloc_traits.h:462
No locals.
#7  0x000055555596a42a in std::_Vector_base<polybar::v3_1_0_73_g55331d1_git::action_block, std::allocator<polybar::v3_1_0_73_g55331d1_git::action_block> >::_M_deallocate (
    this=0x7fffffff96f0, __p=0x555555eaef70, __n=8) at /usr/include/c++/7/bits/stl_vector.h:180
No locals.
#8  0x000055555595c7ae in std::_Vector_base<polybar::v3_1_0_73_g55331d1_git::action_block, std::allocator<polybar::v3_1_0_73_g55331d1_git::action_block> >::~_Vector_base (
    this=0x7fffffff96f0, __in_chrg=<optimized out>) at /usr/include/c++/7/bits/stl_vector.h:162
No locals.
#9  0x0000555555953b99 in std::vector<polybar::v3_1_0_73_g55331d1_git::action_block, std::allocator<polybar::v3_1_0_73_g55331d1_git::action_block> >::~vector (this=0x7fffffff96f0, 
    __in_chrg=<optimized out>) at /usr/include/c++/7/bits/stl_vector.h:435
No locals.
#10 0x0000555555945693 in polybar::v3_1_0_73_g55331d1_git::bar::handle (this=0x555555ea2b90, evt=...) at /home/matthewlavine/workspace/polybar/src/components/bar.cpp:633
        action = @0x555555eaf000: {<polybar::v3_1_0_73_g55331d1_git::action> = {button = polybar::v3_1_0_73_g55331d1_git::mousebtn::LEFT, 
            command = "\000\000\000\000\000\000\000\000ocus-1 www"}, align = polybar::v3_1_0_73_g55331d1_git::alignment::LEFT, start_x = 0, end_x = 72, active = false}
        __for_range = <unknown type in /home/matthewlavine/workspace/polybar/build/bin/polybar, CU 0x5cd7e, DIE 0xdf361>
        __for_begin = 
  {<polybar::v3_1_0_73_g55331d1_git::action> = {button = polybar::v3_1_0_73_g55331d1_git::mousebtn::LEFT, command = "\000\000\000\000\000\000\000\000ocus-1 www"}, align = polybar::v3_1_0_73_g55331d1_git::alignment::LEFT, start_x = 0, end_x = 72, active = false}
        __for_end = 
  {<polybar::v3_1_0_73_g55331d1_git::action> = {button = polybar::v3_1_0_73_g55331d1_git::mousebtn::NONE, command = <error reading variable: Cannot create a lazy string with address 0x0, and a non-zero length.>}, align = polybar::v3_1_0_73_g55331d1_git::alignment::LEFT, start_x = 5.5829417980060859e-322, end_x = 4.6355710229897481e-310, active = 7}
        found_scroll = true
        find_click_area = {__this = 0x555555ea2b90, __found_scroll = @0x7fffffff96bf}
#11 0x0000555555ac1562 in xpp::event::detail::dispatcher::dispatch<xpp::x::event::motion_notify<polybar::v3_1_0_73_g55331d1_git::connection&> > (this=0x555555ea2b90, e=...)
    at /home/matthewlavine/workspace/polybar/lib/xpp/include/xpp/event.hpp:206
        event_sink = 0x555555ea2bb8
#12 0x0000555555abdc09 in xpp::event::registry<polybar::v3_1_0_73_g55331d1_git::connection&, xpp::randr::extension, xpp::xkb::extension>::handle<xpp::x::event::motion_notify<polybar::v3_1_0_73_g55331d1_git::connection&> > (this=0x555555ea20c8, event=...) at /home/matthewlavine/workspace/polybar/lib/xpp/include/xpp/event.hpp:108
        item = @0x555555ea4e90: {first = 1, second = 0x555555ea2b90}
        __for_range = std::multimap with 1 element = {[1] = 0x555555ea2b90}
        __for_begin = {first = 1, second = 0x555555ea2b90}
        __for_end = {first = 1, second = 0x7ffff573bbc8 <vtable for std::runtime_error+16>}
#13 0x0000555555abb224 in xpp::event::registry<polybar::v3_1_0_73_g55331d1_git::connection&, xpp::randr::extension, xpp::xkb::extension>::handler::operator()<xpp::x::event::motion_notify<polybar::v3_1_0_73_g55331d1_git::connection&> > (this=0x7fffffff9970, event=...) at /home/matthewlavine/workspace/polybar/lib/xpp/include/xpp/event.hpp:124
No locals.
#14 0x0000555555ab9aaa in xpp::x::event::dispatcher<polybar::v3_1_0_73_g55331d1_git::connection&>::operator()<xpp::event::registry<polybar::v3_1_0_73_g55331d1_git::connection&, xpp::randr::extension, xpp::xkb::extension>::handler> (this=0x555555ea20c8, handler=..., event=warning: RTTI symbol not found for class 'std::_Sp_counted_deleter<xcb_generic_event_t*, void (*)(void*), std::allocator<void>, (__gnu_cxx::_Lock_policy)2>'
warning: RTTI symbol not found for class 'std::_Sp_counted_deleter<xcb_generic_event_t*, void (*)(void*), std::allocator<void>, (__gnu_cxx::_Lock_policy)2>'
std::shared_ptr<xcb_generic_event_t> (use count 2, weak count 0) = {...})
    at /home/matthewlavine/workspace/polybar/lib/xpp/include/xpp/proto/x.hpp:11409
---Type <return> to continue, or q <return> to quit---
No locals.
#15 0x0000555555ab93e1 in xpp::event::registry<polybar::v3_1_0_73_g55331d1_git::connection&, xpp::randr::extension, xpp::xkb::extension>::dispatch<xpp::x::extension> (
    this=0x555555ea20c8, event=warning: RTTI symbol not found for class 'std::_Sp_counted_deleter<xcb_generic_event_t*, void (*)(void*), std::allocator<void>, (__gnu_cxx::_Lock_policy)2>'
warning: RTTI symbol not found for class 'std::_Sp_counted_deleter<xcb_generic_event_t*, void (*)(void*), std::allocator<void>, (__gnu_cxx::_Lock_policy)2>'
std::shared_ptr<xcb_generic_event_t> (use count 2, weak count 0) = {...}) at /home/matthewlavine/workspace/polybar/lib/xpp/include/xpp/event.hpp:133
No locals.
#16 0x0000555555ab8d5d in xpp::event::registry<polybar::v3_1_0_73_g55331d1_git::connection&, xpp::randr::extension, xpp::xkb::extension>::dispatch<xpp::x::extension, xpp::randr::extension, xpp::xkb::extension> (this=0x555555ea20c8, event=warning: RTTI symbol not found for class 'std::_Sp_counted_deleter<xcb_generic_event_t*, void (*)(void*), std::allocator<void>, (__gnu_cxx::_Lock_policy)2>'
warning: RTTI symbol not found for class 'std::_Sp_counted_deleter<xcb_generic_event_t*, void (*)(void*), std::allocator<void>, (__gnu_cxx::_Lock_policy)2>'
std::shared_ptr<xcb_generic_event_t> (use count 2, weak count 0) = {...})
    at /home/matthewlavine/workspace/polybar/lib/xpp/include/xpp/event.hpp:140
No locals.
#17 0x0000555555ab85b3 in xpp::event::registry<polybar::v3_1_0_73_g55331d1_git::connection&, xpp::randr::extension, xpp::xkb::extension>::dispatch (this=0x555555ea20c8, event=warning: RTTI symbol not found for class 'std::_Sp_counted_deleter<xcb_generic_event_t*, void (*)(void*), std::allocator<void>, (__gnu_cxx::_Lock_policy)2>'
warning: RTTI symbol not found for class 'std::_Sp_counted_deleter<xcb_generic_event_t*, void (*)(void*), std::allocator<void>, (__gnu_cxx::_Lock_policy)2>'

std::shared_ptr<xcb_generic_event_t> (use count 2, weak count 0) = {...}) at /home/matthewlavine/workspace/polybar/lib/xpp/include/xpp/event.hpp:61
No locals.
#18 0x0000555555ab787f in polybar::v3_1_0_73_g55331d1_git::connection::dispatch_event (this=0x555555ea2060, evt=warning: RTTI symbol not found for class 'std::_Sp_counted_deleter<xcb_generic_event_t*, void (*)(void*), std::allocator<void>, (__gnu_cxx::_Lock_policy)2>'
warning: RTTI symbol not found for class 'std::_Sp_counted_deleter<xcb_generic_event_t*, void (*)(void*), std::allocator<void>, (__gnu_cxx::_Lock_policy)2>'

std::shared_ptr<xcb_generic_event_t> (use count 2, weak count 0) = {...}) at /home/matthewlavine/workspace/polybar/src/x11/connection.cpp:228
No locals.
#19 0x0000555555993d99 in polybar::v3_1_0_73_g55331d1_git::controller::read_events (this=0x555555ea2ec0) at /home/matthewlavine/workspace/polybar/src/components/controller.cpp:330
        evt = warning: RTTI symbol not found for class 'std::_Sp_counted_deleter<xcb_generic_event_t*, void (*)(void*), std::allocator<void>, (__gnu_cxx::_Lock_policy)2>'
warning: RTTI symbol not found for class 'std::_Sp_counted_deleter<xcb_generic_event_t*, void (*)(void*), std::allocator<void>, (__gnu_cxx::_Lock_policy)2>'
std::shared_ptr<xcb_generic_event_t> (use count 2, weak count 0) = {get() = 0x555555eaf820}
        readfds = {fds_bits = {8, 0 <repeats 15 times>}}
        maxfd = 4
        events = 1
        confevent = std::unique_ptr<polybar::v3_1_0_73_g55331d1_git::inotify_event> = {get() = 0x0}
        fd_connection = 3
        fd_confwatch = -1
        fd_ipc = -1
        fds = std::vector of length 2, capacity 2 = {4, 3}
#20 0x0000555555992d17 in polybar::v3_1_0_73_g55331d1_git::controller::run (this=0x555555ea2ec0, writeback=false, snapshot_dst="")
    at /home/matthewlavine/workspace/polybar/src/components/controller.cpp:196
        __PRETTY_FUNCTION__ = "bool polybar::v3_1_0_73_g55331d1_git::controller::run(bool, std::__cxx11::string)"
        started_modules = 10
#21 0x00005555559e4bb5 in main (argc=2, argv=0x7fffffffe048) at /home/matthewlavine/workspace/polybar/src/main.cpp:145
        xcb_screen = 0
        xcb_connection = 0x555555e9c880
        conn = @0x555555ea2060: {<polybar::v3_1_0_73_g55331d1_git::detail::connection_base<polybar::v3_1_0_73_g55331d1_git::connection&, xpp::randr::extension, xpp::xkb::extension>> = {<xpp::core> = {_vptr.core = 0x555555e5b740 <vtable for polybar::v3_1_0_73_g55331d1_git::connection+16>, m_screen = 0, m_c = warning: RTTI symbol not found for class 'std::_Sp_counted_deleter<xcb_connection_t*, xpp::core::core(xcb_connection_t*)::{lambda(...)#1}, std::allocator<void>, (__gnu_cxx::_Lock_policy)2>'
warning: RTTI symbol not found for class 'std::_Sp_counted_deleter<xcb_connection_t*, xpp::core::core(xcb_connection_t*)::{lambda(...)#1}, std::allocator<void>, (__gnu_cxx::_Lock_policy)2>'

std::shared_ptr<xcb_connection_t> (use count 1, weak count 0) = {get() = 0x555555e9c880}}, <xpp::generic::error_dispatcher> = {
              _vptr.error_dispatcher = 0x555555e5b820 <vtable for polybar::v3_1_0_73_g55331d1_git::connection+240>}, <polybar::v3_1_0_73_g55331d1_git::detail::interfaces<polybar::v3_1_0_73_g55331d1_git::detail::connection_base<polybar::v3_1_0_73_g55331d1_git::connection&, xpp::randr::extension, xpp::xkb::extension>, xpp::randr::extension, xpp::xkb::extension>> = {<xpp::x::interface<polybar::v3_1_0_73_g55331d1_git::detail::interfaces<polybar::v3_1_0_73_g55331d1_git::detail::connection_base<polybar::v3_1_0_73_g55331d1_git::connection&, xpp::randr::extension, xpp::xkb::extension>, xpp::randr::extension, xpp::xkb::extension>, polybar::v3_1_0_73_g55331d1_git::detail::connection_base<polybar::v3_1_0_73_g55331d1_git::connection&, xpp::randr::extension, xpp::xkb::extension> >> = {
                _vptr.interface = 0x555555e5b838 <vtable for polybar::v3_1_0_73_g55331d1_git::connection+264>}, <xpp::randr::interface<polybar::v3_1_0_73_g55331d1_git::detail::interfaces<polybar::v3_1_0_73_g55331d1_git::detail::connection_base<polybar::v3_1_0_73_g55331d1_git::connection&, xpp::randr::extension, xpp::xkb::extension>, xpp::randr::extension, xpp::xkb::extension>, polybar::v3_1_0_73_g55331d1_git::detail::connection_bas
8000
e<polybar::v3_1_0_73_g55331d1_git::connection&, xpp::randr::extension, xpp::xkb::extension> >> = {
                _vptr.interface = 0x555555e5b858 <vtable for polybar::v3_1_0_73_g55331d1_git::connection+296>}, <xpp::xkb::interface<polybar::v3_1_0_73_g55331d1_git::detail::interfaces<polybar::v3_1_0_73_g55331d1_git::detail::connection_base<polybar::v3_1_0_73_g55331d1_git::connection&, xpp::randr::extension, xpp::xkb::extension>, xpp::randr::extension, xpp::xkb::extension>, polybar::v3_1_0_73_g55331d1_git::detail::connection_base<polybar::v3_1_0_73_g55331d1_git::connection&, xpp::randr::extension, xpp::xkb::extension> >> = {
                _vptr.interface = 0x555555e5b878 <vtable for polybar::v3_1_0_73_g55331d1_git::connection+328>}, <No data fields>}, <xpp::x::extension> = {<No data fields>}, <xpp::x::error::dispatcher> = {<No data fields>}, <xpp::randr::extension> = {<xpp::generic::extension<xpp::randr::extension, &xcb_randr_id>> = {m_c = 0x555555e9c880, 
                m_extension = 0x555555ea21d0}, <No data fields>}, <xpp::xkb::extension> = {<xpp::generic::extension<xpp::xkb::extension, &xcb_xkb_id>> = {m_c = 0x555555e9c880, 
                m_extension = 0x555555ea2170}, <No data fields>}, <xpp::randr::error::dispatcher> = {m_first_error = 147 '\223'}, <xpp::xkb::error::dispatcher> = {
              m_first_error = 137 '\211'}, m_root_window = 255}, 
          m_registry = {<xpp::event::registry<polybar::v3_1_0_73_g55331d1_git::connection&, xpp::randr::extension, xpp::xkb::extension>> = {<xpp::x::event::dispatcher<polybar::v3_1_0_73_g55331d1_git::connection&>> = {m_c = @0x555555ea2060}, <xpp::randr::event::dispatcher<polybar::v3_1_0_73_g55331d1_git::connection&>> = {m_c = @0x555555ea2060, 
---Type <return> to continue, or q <return> to quit---
                m_first_event = 89 'Y'}, <xpp::xkb::event::dispatcher<polybar::v3_1_0_73_g55331d1_git::connection&>> = {m_c = @0x555555ea2060, m_first_event = 85 'U'}, 
              m_c = @0x555555ea2060, m_dispatchers = std::unordered_map with 17 elements = {[90 'Z'] = std::multimap with 1 element = {[4] = 0x555555eaeb08}, 
                [25 '\031'] = std::multimap with 1 element = {[3] = 0x555555ea25b0}, [8 '\b'] = std::multimap with 1 element = {[1] = 0x555555ea2b90}, 
                [23 '\027'] = std::multimap with 1 element = {[3] = 0x555555ea25b0}, [6 '\006'] = std::multimap with 1 element = {[1] = 0x555555ea2b90}, 
                [33 '!'] = std::multimap with 2 elements = {[1] = 0x555555ea2b90, [3] = 0x555555ea25b0}, [12 '\f'] = std::multimap with 2 elements = {[1] = 0x555555ea2b90, 
                  [3] = 0x555555ea25b0}, [29 '\035'] = std::multimap with 1 element = {[3] = 0x555555ea25b0}, [28 '\034'] = std::multimap with 2 elements = {[1] = 0x555555ea2b90, 
                  [3] = 0x555555ea25b0}, [21 '\025'] = std::multimap with 1 element = {[3] = 0x555555ea25b0}, [15 '\017'] = std::multimap with 1 element = {[3] = 0x555555ea25b0}, 
                [89 'Y'] = std::multimap with 1 element = {[2] = 0x555555ea5140}, [4 '\004'] = std::multimap with 1 element = {[1] = 0x555555ea2b90}, 
                [17 '\021'] = std::multimap with 2 elements = {[1] = 0x555555ea2b90, [3] = 0x555555ea25b0}, [19 '\023'] = std::multimap with 1 element = {[3] = 0x555555ea25b0}, 
                [18 '\022'] = std::multimap with 1 element = {[3] = 0x555555ea25b0}, [7 '\a'] = std::multimap with 1 element = {[1] = 0x555555ea2b90}}}, <No data fields>}, 
          m_screen = 0x555555ea1ba4}
        confpath = ""
        cli = std::unique_ptr<polybar::v3_1_0_73_g55331d1_git::command_line::parser> = {get() = 0x555555e9bf80}
        conf = @0x555555ea2340: {m_log = @0x555555e9a280, m_file = "/home/matthewlavine/.config/polybar/config", m_barname = "laptop", m_sections = std::map with 15 elements = {
            ["bar/laptop"] = std::unordered_map with 32 elements = {["cursor-scroll"] = "pointer", ["scroll-down"] = "i3wm-wsprev", ["wm-restack"] = "i3", 
              ["tray-transparent"] = "false", ["bottom"] = "false", ["modules-right"] = "cpu memory temperature xbacklight redshift wlan battery pavolume date", 
              ["scroll-up"] = "i3wm-wsnext", ["tray-padding"] = "5", ["modules-center"] = "", ["modules-left"] = "i3", ["fixed-center"] = "false", ["border-color"] = "#f3f99d", 
              ["module-margin-left"] = "1", ["background"] = "${colors.background}", ["radius"] = "0.0", ["tray-position"] = "right", 
              ["font-2"] = "Font Awesome 5 Free:style=Regular:pixelsize=10;2", ["override-redirect"] = "false", ["line-size"] = "1", ["line-color"] = "#f00", ["width"] = "100%", 
              ["border-size"] = "0", ["tray-background"] = "${colors.background}", ["font-1"] = "Font Awesome 5 Free:style=Solid:pixelsize=10;2", ["height"] = "27", 
              ["module-margin-right"] = "1", ["cursor-click"] = "pointer", ["padding-left"] = "0", ["font-3"] = "Font Awesome 5 Brands:pixelsize=10;2", 
              ["foreground"] = "${colors.foreground}", ["padding-right"] = "1", ["font-0"] = "SourceCodeProSemiBold:size=10;1"}, ["colors"] = std::unordered_map with 8 elements = {
              ["underline-alt"] = "#aa0000", ["underline"] = "#f3f99d", ["background"] = "#cc111111", ["foreground-alt"] = "#888", ["foreground"] = "#dfdfdf", ["primary"] = "#00ffff", 
              ["background-alt"] = "#444", ["secondary"] = "#990000"}, ["global/wm"] = std::unordered_map with 2 elements = {["margin-bottom"] = "0", ["margin-top"] = "2"}, 
            ["module/battery"] = std::unordered_map with 21 elements = {["format-full-underline"] = "${colors.underline}", ["label-full"] = "%percentage%%", 
              ["label-discharging"] = "%percentage%%   %consumption%W   %time%", ["label-charging"] = "%percentage%%   %consumption%W   %time%", 
              ["animation-charging-3"] = "", ["adapter"] = "AC", ["battery"] = "BAT0", ["time-format"] = "%Hh %Mm", ["format-full-prefix"] = " ", ["type"] = "internal/battery", 
              ["animation-charging-framerate"] = "500", ["animation-charging-4"] = "", ["format-charging-underline"] = "${colors.underline}", ["animation-charging-1"] = "", 
              ["format-discharging-underline"] = "${colors.underline-alt}", ["poll-interval"] = "5", ["full-at"] = "97", ["animation-charging-0"] = "", 
              ["animation-charging-2"] = "", ["format-charging"] = "<animation-charging> <label-charging>", ["format-discharging-prefix"] = " "}, 
            ["module/cpu"] = std::unordered_map with 3 elements = {["label"] = " %percentage%%", ["type"] = "internal/cpu", ["interval"] = "1"}, 
            ["module/cpuload"] = std::unordered_map with 4 elements = {["exec"] = "~/.config/polybar/cpuload.sh", ["label"] = " %output%", ["type"] = "custom/script", 
              ["interval"] = "1"}, ["module/date"] = std::unordered_map with 5 elements = {["label"] = "%date% %time%", ["type"] = "internal/date", ["time"] = "%l:%M:%S %p", 
              ["date"] = "%A %b %d", ["interval"] = "1"}, ["module/i3"] = std::unordered_map with 23 elements = {["label-visible-underline"] = "${self.label-focused-underline}", 
              ["label-visible-background"] = "${self.label-focused-background}", ["pin-workspaces"] = "true", ["label-urgent"] = "%name%", ["wrapping-scroll"] = "false", 
              ["index-sort"] = "true", ["label-urgent-underline"] = "${colors.underline-alt}", ["label-focused-underline"] = "${colors.underline}", ["label-mode-padding"] = "2", 
              ["type"] = "internal/i3", ["format"] = "<label-state> <label-mode>", ["label-mode-background"] = "${colors.secondary}", 
              ["label-focused-background"] = "${colors.background-alt}", ["label-urgent-padding"] = "${self.label-focused-padding}", 
              ["label-visible-padding"] = "${self.label-focused-padding}", ["label-unfocused-foreground"] = "${colors.foreground-alt}", 
              ["label-mode-foreground"] = "${colors.primary}", ["label-focused-padding"] = "2", ["label-unfocused"] = "%name%", ["label-urgent-background"] = "${colors.secondary}", 
              ["label-focused"] = "%name%", ["label-unfocused-padding"] = "${self.label-focused-padding}", ["label-visible"] = "%name%"}, 
            ["module/memory"] = std::unordered_map with 3 elements = {["label"] = " %percentage_used%%", ["type"] = "internal/memory", ["interval"] = "1"}, 
            ["module/pavolume"] = std::unordered_map with 7 elements = {["scroll-down"] = "~/.config/polybar/pavolume.sh --down", 
              ["click-left"] = "~/.config/polybar/pavolume.sh --togmute", ["tail"] = "true", ["type"] = "custom/script", ["label"] = " %output%", 
              ["exec"] = "~/.config/polybar/pavolume.sh --listen", ["scroll-up"] = "~/.config/polybar/pavolume.sh --up"}, ["module/redshift"] = std::unordered_map with 4 elements = {
              ["exec"] = "~/.config/polybar/redshift.sh", ["type"] = "custom/script", ["format-prefix"] = " ", ["interval"] = "1"}, 
            ["module/temperature"] = std::unordered_map with 10 elements = {["format-warn-underline"] = "${colors.underline-alt}", ["label-warn-foreground"] = "#ff0000", 
              ["label-warn"] = " %temperature%", ["type"] = "internal/temperature", ["hwmon-path"] = "/sys/devices/platform/coretemp.0/hwmon/hwmon2/temp1_input", 
              ["warn-temperature"] = "80", ["interval"] = "1", ["thermal-zone"] = "2", ["format-underline"] = "${colors.underline}", ["label"] = " %temperature%"}, 
            ["module/wlan"] = std::unordered_map with 10 elements = {["format-disconnected-foreground"] = "#ff0000", 
              ["format-disconnected-prefix"] = "${self.format-connected-prefix}", ["format-disconnected"] = "<label-disconnected>", ["interface"] = "wlp4s0", 
              ["format-connected"] = "<label-connected>", ["interval"] = "1", ["format-connected-prefix"] = " ", ["label-disconnected"] = "down", ["type"] = "internal/network", 
---Type <return> to continue, or q <return> to quit---
              ["label-connected"] = "%essid%   %signal%%   %upspeed%   %downspeed%"}, ["module/xbacklight"] = std::unordered_map with 4 elements = {
              ["label"] = "%percentage%%", ["type"] = "internal/xbacklight", ["format-prefix"] = " ", ["interval"] = "5"}, ["settings"] = std::unordered_map with 1 element = {
              ["screenchange-reload"] = "true"}}, m_xrm = std::unique_ptr<polybar::v3_1_0_73_g55331d1_git::xresource_manager> = {get() = 0x0}}
        config_watch = std::unique_ptr<polybar::v3_1_0_73_g55331d1_git::inotify_watch> = {get() = 0x0}
        ctrl = std::unique_ptr<polybar::v3_1_0_73_g55331d1_git::controller> = {get() = 0x555555ea2ec0}
        scriptname = "/home/matthewlavine/workspace/polybar/build/bin/polybar"
        args = std::vector of length 1, capacity 1 = {"laptop"}
        xcb_error = 0
        ipc = std::unique_ptr<polybar::v3_1_0_73_g55331d1_git::ipc> = {get() = 0x0}
        opts = std::vector of length 11, capacity 11 = {{flag = "-h", flag_long = "--help", desc = "Display this help and exit", token = "", 
            values = std::vector of length 0, capacity 0}, {flag = "-v", flag_long = "--version", desc = "Display build details and exit", token = "", 
            values = std::vector of length 0, capacity 0}, {flag = "-l", flag_long = "--log", desc = "Set the logging verbosity (default: WARNING)", token = "LEVEL", 
            values = std::vector of length 4, capacity 4 = {"error", "warning", "info", "trace"}}, {flag = "-q", flag_long = "--quiet", desc = "Be quiet (will override -l)", 
            token = "", values = std::vector of length 0, capacity 0}, {flag = "-c", flag_long = "--config", desc = "Path to the configuration file", token = "FILE", 
            values = std::vector of length 0, capacity 0}, {flag = "-r", flag_long = "--reload", desc = "Reload when the configuration has been modified", token = "", 
            values = std::vector of length 0, capacity 0}, {flag = "-d", flag_long = "--dump", desc = "Print value of PARAM in bar section and exit", token = "PARAM", 
            values = std::vector of length 0, capacity 0}, {flag = "-m", flag_long = "--list-monitors", desc = "Print list of available monitors and exit", token = "", 
            values = std::vector of length 0, capacity 0}, {flag = "-w", flag_long = "--print-wmname", desc = "Print the generated WM_NAME and exit", token = "", 
            values = std::vector of length 0, capacity 0}, {flag = "-s", flag_long = "--stdout", desc = "Output data to stdout instead of drawing it to the X window", token = "", 
            values = std::vector of length 0, capacity 0}, {flag = "-p", flag_long = "--png", desc = "Save png snapshot to FILE after running for 3 seconds", token = "FILE", 
            values = std::vector of length 0, capacity 0}}
        exit_code = 0 '\000'
        reload = false
        logger = @0x555555e9a280: {m_level = polybar::v3_1_0_73_g55331d1_git::loglevel::WARNING, m_fd = 2, m_prefixes = std::map with 4 elements = {
            [polybar::v3_1_0_73_g55331d1_git::loglevel::ERROR] = "\r\033[1;31merror: \033[0m", [polybar::v3_1_0_73_g55331d1_git::loglevel::WARNING] = "\r\033[1;33mwarn: \033[0m", 
            [polybar::v3_1_0_73_g55331d1_git::loglevel::INFO] = "\r\033[1;32m* \033[0m", [polybar::v3_1_0_73_g55331d1_git::loglevel::TRACE] = "\r\033[0;90m- "}, 
          m_suffixes = std::map with 4 elements = {[polybar::v3_1_0_73_g55331d1_git::loglevel::ERROR] = "\033[0m", [polybar::v3_1_0_73_g55331d1_git::loglevel::WARNING] = "\033[0m", 
            [polybar::v3_1_0_73_g55331d1_git::loglevel::INFO] = "\033[0m", [polybar::v3_1_0_73_g55331d1_git::loglevel::TRACE] = "\033[0m"}}

NBonaparte · 2018-03-24T07:06:16Z

I noticed that the motion handler doesn't lock the mutex, which might be an issue if multiple mouse events occur rapidly. See if this prevents the error from occurring:
NBonaparte@783ab2e

MatthewLavine · 2018-03-24T18:25:52Z

Thanks! I will try this build for a few days and report if I see the issue.

MatthewLavine · 2018-03-26T11:28:52Z

No crashes on this build so far \o/

NBonaparte · 2018-03-26T20:18:07Z

I haven't experienced any crashes either, so that was probably the issue. I already made the PR, so this should be fixed in master pretty soon.

Breaking Changes: * `0 < label-NAME-maxlen < 3` will now throw an exception and disable the containing module, if ellipsis is enabled for that label. (#1198) Changelog: Deprecations: * `internal/volume` is now called `internal/alsa` (#967) * temperature: The `%temperature%` is deprecated in favor of `%temperature-c%`(#897) * mpd: `icon-repeatone` is deprecated in favor of `icon-single` (#1295), see #1279 Features: * feat(mpd): Add support for icon-consume (#861) * feat(bspwm): Add workspace separator (#942) * feat(i3): Add workspace separator (#938), see #929 * feat(build): Make polybar build on FreeBSD (#931, polybar/xpp#8), see #239 * feat(volume): Add pulseaudio backend (#779) * feat(script): Add %pid% token for tail commands (#934) * feat(temp): Add temperature tokens without unit (#897) * feat(memory): Add memory used/free ramp (#1038), see #1037 * feat(memory): Add swap tokens (#1018) * feat(net): Add unknown-as-up option (#1077), see #457 * feat(config): Support fractional size and offset (#972), see #953 * feat(xwindow): Add label-empty (#1136) * feat(battery): Add animation-discharging (analog to animation-charging) (#1190) * feat(config): Support pixel offset for bar size and offset values (#1224) * feat(mpd): Add `%album-artist%` token (#1263) * feat(net): Add local_ip6 token (#1239), see #1234 * feat(net): Add nl80211 support (#1009), see #277 Fixes: * fix(mpd): Wrong elapsed time when after standby (#921), see #915 * fix(config): Wrong min, maxlen when using the same token multiple times (#974), see #971 * fix(battery): use power_now correctly (#958), see #928 * fix(mpd): Crash when mpd isn't running (#983), see #979 * fix(xworkspaces): Respect 'enable-scroll' (#1002) * fix(xbacklight): Respect 'enable-scroll' (#1014) * fix(build): support xcb-proto >=1.13 (polybar/xpp#11), see #973 * fix(mpd): Respect MPD_HOST env variable (#1025), see #1007 * fix(i3): Reconnect i3 IPC socket on restart/error (#1099), see #762 * fix(cursor): Occasional crash on mouseover (#1124), see #1117 * fix(net): Mark 'not connected' on querying failure (#1171), see #1163 * fix(gcc): Fix -Wstringop-truncation warning (#1216, polybar/i3ipcpp#7), see #1215 * fix(builder): Don't truncate colors with same channels (#1217), see #1183 * fix(bspwm): Consistent behavior when scrolling through multiple desktops (#986), see #981 * fix(builder): Respect label-ellipsis option (#1198), see #1194

Marti2203 · 2020-06-24T11:32:37Z

Hello, I just got this issue after playing round by clicking multiple times on the two sound panels using the example polybar. I am using the basic config and running version 3.4.2. I can make a video if you want and give any required info.
EDIT: After playing around a little more - I can see that i double click on it and probably it sends two events and that is why it breaks.

patrick96 · 2020-06-24T15:52:26Z

@Marti2203 When you click on which module does the crash occur? You are more likely suffering from #2129 than from this bug.

Marti2203 · 2020-06-24T18:28:26Z

Yeah, okay that is possible. Thank you!

NBonaparte added bug confirmed labels Mar 24, 2018

NBonaparte mentioned this issue Mar 26, 2018

fix(cursor): add lock to motion handler #1124

Merged

patrick96 closed this as completed in #1124 Mar 27, 2018

NBonaparte mentioned this issue Jun 8, 2018

Coredump crash need help investigate #1275

Closed

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Occasional crash on mouseover - double free or corruption #1117

Occasional crash on mouseover - double free or corruption #1117

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Occasional crash on mouseover - double free or corruption #1117

Occasional crash on mouseover - double free or corruption #1117

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