[Buildroot] [Bug 15506] New: Failed to login to system with root and its password.

[Buildroot] [Bug 15506] New: Failed to login to system with root and its password.

[bugzilla]

https://bugs.busybox.net/show_bug.cgi?id=15506

            Bug ID: 15506
           Summary: Failed to login to system with root and its password.
           Product: buildroot
           Version: 2020.02.1
          Hardware: All
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P5
         Component: Other
          Assignee: unassigned@buildroot.uclibc.org
          Reporter: simitel@163.com
                CC: buildroot@uclibc.org
  Target Milestone: ---

I am working on an emebeded system, where busybox is used as init and shell. 

The rootfs is built on X86 host with buildroot (2020.02.1). The buildroot is
configured as follows,
BR2_TARGET_GENERIC_PASSWD_SHA256=y
# BR2_TARGET_GENERIC_PASSWD_SHA512 is not set
BR2_TARGET_GENERIC_PASSWD_METHOD="sha-256"
BR2_INIT_BUSYBOX=y
......
......
BR2_TARGET_ENABLE_ROOT_LOGIN=y
BR2_TARGET_GENERIC_ROOT_PASSWD="000000"
BR2_SYSTEM_BIN_SH_BUSYBOX=y

During the building of rootfs on the host, it shows following logs,
"/usr/bin/sed -i -e
s,^root:[^:]*:,root:"`/home/t/develop/test/project/out/product/linux_nand_5.10-eng/obj/buildroot-intermediate/host/bin/mkpasswd
-m "sha-256" "000000"`":,
/home/t/develop/test/project/out/product/linux_nand_5.10-eng/obj/buildroot-intermediate/target/etc/shadow
"

When the image and rootfs are deployed into the target board and boot up. I
cannot login to system with 'root' and '000000' from serial console.

Then in adb shell, I regenerated the password of root with `echo root:000000 |
chpasswd -c SHA256`, I can login to the system with 'root' and '000000' from
serial console. 

I don't know if this is a bug and how to make login with password.

Thanks,

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[Buildroot] [Bug 15506] Failed to login to system with root and its password.

[bugzilla]

https://bugs.busybox.net/show_bug.cgi?id=15506

--- Comment #1 from wangt13 <simitel@163.com> ---
(In reply to wangt13 from comment #0)
The busybox in buildroot is also configured as follows to support login.

#
# Login/Password Management Utilities
#
CONFIG_FEATURE_SHADOWPASSWDS=y
CONFIG_USE_BB_PWD_GRP=y
CONFIG_USE_BB_SHADOW=y
CONFIG_USE_BB_CRYPT=y
CONFIG_USE_BB_CRYPT_SHA=y
CONFIG_ADD_SHELL=y
CONFIG_REMOVE_SHELL=y
# CONFIG_ADDGROUP is not set
# CONFIG_FEATURE_ADDUSER_TO_GROUP is not set
# CONFIG_ADDUSER is not set
# CONFIG_FEATURE_CHECK_NAMES is not set
CONFIG_LAST_ID=0
CONFIG_FIRST_SYSTEM_ID=0
CONFIG_LAST_SYSTEM_ID=0
CONFIG_CHPASSWD=y
CONFIG_FEATURE_DEFAULT_PASSWD_ALGO="des"
CONFIG_CRYPTPW=y
CONFIG_MKPASSWD=y
# CONFIG_DELUSER is not set
# CONFIG_DELGROUP is not set
# CONFIG_FEATURE_DEL_USER_FROM_GROUP is not set
CONFIG_GETTY=y
CONFIG_LOGIN=y
# CONFIG_LOGIN_SESSION_AS_CHILD is not set
CONFIG_LOGIN_SCRIPTS=y
CONFIG_FEATURE_NOLOGIN=y
CONFIG_FEATURE_SECURETTY=y
CONFIG_PASSWD=y
CONFIG_FEATURE_PASSWD_WEAK_CHECK=y

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[Buildroot] [Bug 15506] Failed to login to system with root and its password.

[bugzilla]

https://bugs.busybox.net/show_bug.cgi?id=15506

--- Comment #2 from wangt13 <simitel@163.com> ---
With lots of testing and googling, I think I fixed the issue of cannot login to
busybox from serial console, by disabling 'CONFIG_USE_BB_SHADOW' in
busybox-menuconfig.

From it help text, it seemed that using internal shadow can save disk space.
But enabling it cause me not to login to system.

Is there any further infor on this option and its impact?

Thanks,

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[Buildroot] [Bug 15506] Failed to login to system with root and its password.

[bugzilla]

https://bugs.busybox.net/show_bug.cgi?id=15506

wangt13 <simitel@163.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED

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