On Wed, May 24, 2017 at 3:39 PM, Przemysław Sobala
<przemyslaw.sob...@gmail.com> wrote:
>  Another stack. Maybe that one will be more clear to you:
> (gdb) bt
> #0  0x00007efd3665a765 in raise () from /lib64/libc.so.6
> #1  0x00007efd3665c483 in abort () from /lib64/libc.so.6
> #2  0x00000000004b79b3 in MagickPanicSignalHandler (signo=11) at
> magick/magick.c:840
> #3  <signal handler called>
> #4  heap_insert (less_than=0x812f40 <timer_less_than>,
> newnode=0x7ffd799e8ab8, heap=0xc28a28 <default_loop_struct+520>) at
> ./src/heap-inl.h:140
> #5  uv_timer_start (handle=0x7ffd799e8a50, cb=0x417abe
> <imageresizer::engine::FileDownloader::on_timeout_cb(uv_timer_s*)>,
> timeout=<optimized out>, repeat=0) at src/unix/timer.c:84
> #6  0x0000000000417c0c in
> imageresizer::engine::FileDownloader::start_timeout (this=0x7ffd799e8a10,
> multi=0x2c0cdd0, timeout_ms=96) at src/engine/FileDownloader.cpp:249
> #7  0x0000000000417baf in
> imageresizer::engine::FileDownloader::start_timeout_cb (multi=0x2c0cdd0,
> timeout_ms=96, userp=0x7ffd799e8a10) at src/engine/FileDownloader.cpp:237
> #8  0x00000000007c7665 in update_timer ()
> #9  0x00000000007cb098 in curl_multi_socket_action ()
> #10 0x0000000000417b3f in imageresizer::engine::FileDownloader::on_timeout
> (this=0x7ffd799e8a10, handle=0x7ffd799e8a50) at
> src/engine/FileDownloader.cpp:231
> #11 0x0000000000417ae0 in
> imageresizer::engine::FileDownloader::on_timeout_cb (handle=0x7ffd799e8a50)
> at src/engine/FileDownloader.cpp:223
> #12 0x00000000008134a5 in uv__run_timers (loop=loop@entry=0xc28820
> <default_loop_struct>) at src/unix/timer.c:165
> #13 0x000000000080becc in uv_run (loop=0xc28820 <default_loop_struct>,
> mode=UV_RUN_DEFAULT) at src/unix/core.c:343
> #14 0x0000000000417409 in imageresizer::engine::FileDownloader::StartLoop
> (this=0x7ffd799e8a10) at src/engine/FileDownloader.cpp:97

Looks like memory corruption or maybe a data race.  Give valgrind a go.

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