Вы можете отладить процесс с помощью gdb --pid=PID
, а backtrace
предоставит вам трассировку стека, чтобы узнать эту функцию.
--pid=PID Attach to running process PID.
Пример для sleep
$ sleep 1000 &
[2] 13221
$ gdb --pid=13221
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Attaching to process 13221
Reading symbols from /usr/bin/sleep...Reading symbols from /usr/bin/sleep...(no debugging symbols found)...done.
(no debugging symbols found)...done.
Reading symbols from /lib64/libc.so.6...(no debugging symbols found)...done.
Loaded symbols for /lib64/libc.so.6
Reading symbols from /lib64/ld-linux-x86-64.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib64/ld-linux-x86-64.so.2
0x0000003122abc970 in __nanosleep_nocancel() from /lib64/libc.so.6
Missing separate debuginfos, use: debuginfo-install coreutils-8.21-21.fc20.x86_64
(gdb) backtrace
#0 0x0000003122abc970 in __nanosleep_nocancel() from /lib64/libc.so.6
#1 0x00000000004040cf in rpl_nanosleep()
#2 0x0000000000403f30 in xnanosleep()
#3 0x00000000004018ed in main()
(gdb)
И что будет работать лучше, если приложение компилируется с отладочной информацией (например, с помощью 'НКИ -g'). –