[Squashfs-devel] mksquashfs 4.2 SEGV in mangle2

[Stephen H. <she...@vy...>]

This version crashes when used to create ISO in our build process:

Running same step manually with gdb:
(gdb) run chroot binary/live/filesystem.squashfs -no-progress
Starting program: /home/shemminger/napa/squashfs/squashfs-tools/mksquashfs chroot binary/live/filesystem.squashfs -no-progress
[Thread debugging using libthread_db enabled]
[New Thread 0xb7d7bb70 (LWP 15438)]
[New Thread 0xb757ab70 (LWP 15439)]
[New Thread 0xb6d79b70 (LWP 15440)]
[New Thread 0xb6578b70 (LWP 15441)]
[New Thread 0xb5d77b70 (LWP 15442)]
[New Thread 0xb5576b70 (LWP 15443)]
[New Thread 0xb4d75b70 (LWP 15444)]
[New Thread 0xb4574b70 (LWP 15445)]
[New Thread 0xb3d73b70 (LWP 15446)]
[New Thread 0xb3572b70 (LWP 15447)]
[New Thread 0xb2d71b70 (LWP 15448)]
Parallel mksquashfs: Using 4 processors
Creating 4.0 filesystem on binary/live/filesystem.squashfs, block size 131072.

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xb5576b70 (LWP 15443)]
0x00000000 in ?? ()
(gdb) where
#0  0x00000000 in ?? ()
#1  0x0804ad3a in mangle2 (strm=0x0, d=0xb24004b8 "", 
    s=0x8eb79b0 "\177ELF\001\001\001", size=131072, block_size=131072, 
    uncompressed=0, data_block=1) at mksquashfs.c:867
#2  0x08050003 in deflator (arg=0x0) at mksquashfs.c:2586
#3  0xb7fc6955 in start_thread () from /lib/i686/cmov/libpthread.so.0
#4  0xb7f0be7e in clone () from /lib/i686/cmov/libc.so.6