[popcornmix]

Log http://sprunge.us/XNQM
CEC - off, resample - low, threshold - 2

Code:

Thread 1 (Thread 0x61cb23a0 (LWP 584)):
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:55
#1  0x750cc990 in __GI_abort () at abort.c:89
#2  0x75104004 in __libc_message (do_abort=do_abort@entry=2, fmt=0x751b3fbc "*** Error in `%s': %s: 0x%s ***\n") at ../sysdeps/posix/libc_fatal.c:175
#3  0x7510a3c0 in malloc_printerr (action=<optimized out>, str=0x751b4490 "malloc(): smallbin double linked list corrupted", ptr=<optimized out>, ar_ptr=<optimized out>) at malloc.c:5007
#4  0x7510cc68 in _int_malloc (av=av@entry=0x73000010, bytes=bytes@entry=13) at malloc.c:3387
#5  0x7510e680 in __GI___libc_malloc (bytes=13) at malloc.c:2914

is generally heap corruption (e.g. writing beyond end of buffer).

Do you have a way of reproducing this reliably? E.g. with a specific file?