Still not fixed *** Error in `(pinger)': munmap_chunk(): invalid pointer: 0x000055e3af07c0b0 *** *** Error in `(pinger)': malloc(): memory corruption: 0x000055e3af07bfe0 *** ======= Backtrace: ========= /lib/x86_64-linux-gnu/libc.so.6(+0x778bf)[0x7f6592a7b8bf] /lib/x86_64-linux-gnu/libc.so.6(+0x81b5e)[0x7f6592a85b5e] /lib/x86_64-linux-gnu/libc.so.6(__libc_malloc+0x54)[0x7f6592a87744] /lib64/ld-linux-x86-64.so.2(+0xe4e7)[0x7f65933744e7] /lib64/ld-linux-x86-64.so.2(+0x15332)[0x7f659337b332] /lib64/ld-linux-x86-64.so.2(+0x10334)[0x7f6593376334] /lib64/ld-linux-x86-64.so.2(+0x14af9)[0x7f659337aaf9] /lib/x86_64-linux-gnu/libc.so.6(+0x1436cd)[0x7f6592b476cd] /lib64/ld-linux-x86-64.so.2(+0x10334)[0x7f6593376334] /lib/x86_64-linux-gnu/libc.so.6(__libc_dlopen_mode+0x54)[0x7f6592b47784] /lib/x86_64-linux-gnu/libc.so.6(backtrace+0xc1)[0x7f6592b199f1] /lib/x86_64-linux-gnu/libc.so.6(+0x1f9fa)[0x7f6592a239fa] /lib/x86_64-linux-gnu/libc.so.6(+0x778bf)[0x7f6592a7b8bf] /lib/x86_64-linux-gnu/libc.so.6(cfree+0x1a8)[0x7f6592a87db8] (pinger)(+0xbbea)[0x55e3adfe5bea] (pinger)(+0x8668)[0x55e3adfe2668] (pinger)(+0x50e1)[0x55e3adfdf0e1] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf1)[0x7f6592a24841] (pinger)(+0x5b19)[0x55e3adfdfb19] ======= Memory map: ======== 55e3adfda000-55e3adfec000 r-xp 00000000 fc:00 3051330 /usr/lib/squid/pinger 55e3ae1eb000-55e3ae1ec000 r--p 00011000 fc:00 3051330 /usr/lib/squid/pinger 55e3ae1ec000-55e3ae1ed000 rw-p 00012000 fc:00 3051330 /usr/lib/squid/pinger 55e3ae1ed000-55e3ae201000 rw-p 00000000 00:00 0 55e3af06a000-55e3af09c000 rw-p 00000000 00:00 0 [heap] 7f658c000000-7f658c021000 rw-p 00000000 00:00 0 7f658c021000-7f6590000000 ---p 00000000 00:00 0 7f65926fb000-7f6592803000 r-xp 00000000 fc:00 1708669 /lib/x86_64-linux-gnu/libm-2.23.so 7f6592803000-7f6592a02000 ---p 00108000 fc:00 1708669 /lib/x86_64-linux-gnu/libm-2.23.so 7f6592a02000-7f6592a03000 r--p 00107000 fc:00 1708669 /lib/x86_64-linux-gnu/libm-2.23.so 7f6592a03000-7f6592a04000 rw-p 00108000 fc:00 1708669 /lib/x86_64-linux-gnu/libm-2.23.so 7f6592a04000-7f6592bc4000 r-xp 00000000 fc:00 1708605 /lib/x86_64-linux-gnu/libc-2.23.so 7f6592bc4000-7f6592dc4000 ---p 001c0000 fc:00 1708605 /lib/x86_64-linux-gnu/libc-2.23.so 7f6592dc4000-7f6592dc8000 r--p 001c0000 fc:00 1708605 /lib/x86_64-linux-gnu/libc-2.23.so 7f6592dc8000-7f6592dca000 rw-p 001c4000 fc:00 1708605 /lib/x86_64-linux-gnu/libc-2.23.so 7f6592dca000-7f6592dce000 rw-p 00000000 00:00 0 7f6592dce000-7f6592de4000 r-xp 00000000 fc:00 1708638 /lib/x86_64-linux-gnu/libgcc_s.so.1 7f6592de4000-7f6592fe3000 ---p 00016000 fc:00 1708638 /lib/x86_64-linux-gnu/libgcc_s.so.1 7f6592fe3000-7f6592fe4000 rw-p 00015000 fc:00 1708638 /lib/x86_64-linux-gnu/libgcc_s.so.1 7f6592fe4000-7f6593156000 r-xp 00000000 fc:00 3016716 /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.21 7f6593156000-7f6593356000 ---p 00172000 fc:00 3016716 /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.21 7f6593356000-7f6593360000 r--p 00172000 fc:00 3016716 /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.21 7f6593360000-7f6593362000 rw-p 0017c000 fc:00 3016716 /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.21 7f6593362000-7f6593366000 rw-p 00000000 00:00 0 7f6593366000-7f659338c000 r-xp 00000000 fc:00 1708577 /lib/x86_64-linux-gnu/ld-2.23.so 7f6593552000-7f6593557000 rw-p 00000000 00:00 0 7f6593587000-7f6593588000 rw-p 00000000 00:00 0 7f6593589000-7f659358b000 rw-p 00000000 00:00 0 7f659358b000-7f659358c000 r--p 00025000 fc:00 1708577 /lib/x86_64-linux-gnu/ld-2.23.so 7f659358c000-7f659358d000 rw-p 00026000 fc:00 1708577 /lib/x86_64-linux-gnu/ld-2.23.so 7f659358d000-7f659358e000 rw-p 00000000 00:00 0 7ffed44a2000-7ffed44c3000 rw-p 00000000 00:00 0 [stack] 7ffed45d5000-7ffed45d7000 r--p 00000000 00:00 0 [vvar] 7ffed45d7000-7ffed45d9000 r-xp 00000000 00:00 0 [vdso] ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall] 2016/04/06 11:53:30 kid1| recv: (111) Connection refused Xenial amd64