Segmentation fault when changing password with chpasswd

[juyin]

When running the following command, chpasswd segfaults:
echo "test:test" | chpasswd -R /home/juyin/rootfs

The backtrace:
(gdb) bt
#0 0x00007f26ab9ba570 in fread () from /lib64/libc.so.6
#1 0x00000000004040dc in read_random_bytes () at salt.c:179
#2 0x000000000040438a in gensalt (salt_size=16) at salt.c:440
#3 0x0000000000404652 in crypt_make_salt (meth=0x0, arg=0x0) at salt.c:559
#4 0x00000000004036a9 in main (argc=3, argv=0x7ffc6950ab88) at chpasswd.c:539

[ikerexxe]

I guess this is happening because chpasswd is unable to open /dev/urandom in salt.c#L177, but we aren't checking the return value. Is the aforementioned file available on your system?

[juyin]

I guess this is happening because chpasswd is unable to open /dev/urandom in salt.c#L177, but we aren't checking the return value. Is the aforementioned file available on your system?

Year, the file ‘/dev/urandom’ exists in my Linux.
But, when chpasswd is used with '-R /home/juyin/rootfs', it will be changed the root directory to '/home/juyin/rootfs'.
The file '/home/juyin/rootfs/etc/urandom' doesn't exist.