Is there any patches for tegra-minimal-initramfs.bb to prevent this error? - yocto

Question

I was trying to build core-image-minimal for Jetson TX2 following the instructions from this link
https://developer.ridgerun.com/wiki/index.php?title=Yocto_Support_for_NVIDIA_Jetson_Platforms-Old .
My build configuration is
Build Configuration:
BB_VERSION = "1.46.0"
BUILD_SYS = "x86_64-linux"
NATIVELSBSTRING = "universal"
TARGET_SYS = "aarch64-poky-linux"
MACHINE = "jetson-tx2"
DISTRO = "poky"
DISTRO_VERSION = "3.1.5"
TUNE_FEATURES = "aarch64 armv8a crc"
TARGET_FPU = ""
meta-tegra = "dunfell-l4t-r32.4.3:3b4df1ac05e9f96e0363630c036f5445800af435"
meta
meta-poky
meta-yocto-bsp = "dunfell:6e89d668246fb37b2217aae7ae57390e793696d8"
But I got this error related to tegra-minimal-initramfs recipe.
WARNING: tegra-minimal-initramfs-1.0-r0 do_image_complete: KeyError in .
ERROR: tegra-minimal-initramfs-1.0-r0 do_image_complete: Error executing a python function in exec_python_func() autogenerated:
The stack trace of python calls that resulted in this exception/failure was:
File: 'exec_python_func() autogenerated', lineno: 2, function: <module>
0001:
*** 0002:sstate_report_unihash(d)
0003:
File: '/home/pc_1175/yocto-tegra/poky-dunfell/meta/classes/sstate.bbclass', lineno: 844, function: sstate_report_unihash
0840: report_unihash = getattr(bb.parse.siggen, 'report_unihash', None)
0841:
0842: if report_unihash:
0843: ss = sstate_state_fromvars(d)
*** 0844: report_unihash(os.getcwd(), ss['task'], d)
0845:}
0846:
0847:#
0848:# Shell function to decompress and prepare a package for installation
File: '/home/pc_1175/yocto-tegra/poky-dunfell/bitbake/lib/bb/siggen.py', lineno: 555, function: report_unihash
0551:
0552: if "." in self.method:
0553: (module, method) = self.method.rsplit('.', 1)
0554: locs['method'] = getattr(importlib.import_module(module), method)
*** 0555: outhash = bb.utils.better_eval('method(path, sigfile, task, d)', locs)
0556: else:
0557: outhash = bb.utils.better_eval(self.method + '(path, sigfile, task, d)', locs)
0558:
0559: try:
File: '/home/pc_1175/yocto-tegra/poky-dunfell/bitbake/lib/bb/utils.py', lineno: 420, function: better_eval
0416: if extraglobals:
0417: ctx = copy.copy(ctx)
0418: for g in extraglobals:
0419: ctx[g] = extraglobals[g]
*** 0420: return eval(source, ctx, locals)
0421:
0422:#contextmanager
0423:def fileslocked(files):
0424: """Context manager for locking and unlocking file locks."""
File: '<string>', lineno: 1, function: <module>
File "<string>", line 1, in <module>
File: '/home/pc_1175/yocto-tegra/poky-dunfell/meta/lib/oe/sstatesig.py', lineno: 593, function: OEOuthashBasic
0589:
0590: update_hash("\n")
0591:
0592: # Process this directory and all its child files
*** 0593: process(root)
0594: for f in files:
0595: if f == 'fixmepath':
0596: continue
0597: process(os.path.join(root, f))
File: '/home/pc_1175/yocto-tegra/poky-dunfell/meta/lib/oe/sstatesig.py', lineno: 553, function: process
0549: add_perm(stat.S_IXOTH, 'x')
0550:
0551: if include_owners:
0552: try:
*** 0553: update_hash(" %10s" % pwd.getpwuid(s.st_uid).pw_name)
0554: update_hash(" %10s" % grp.getgrgid(s.st_gid).gr_name)
0555: except KeyError:
0556: bb.warn("KeyError in %s" % path)
0557: raise
Exception: KeyError: 'getpwuid(): uid not found: 1000'
ERROR: Logfile of failure stored in: /home/pc_1175/yocto-tegra/build/tmp/work/jetson_tx2-poky-linux/tegra-minimal-initramfs/1.0-r0/temp/log.do_image_complete.23961
ERROR: Task (/home/pc_1175/yocto-tegra/meta-tegra/recipes-core/images/tegra-minimal-initramfs.bb:do_image_complete) failed with exit code '1'
The problem is that I have built the same image before with the same packages and I didn't get this error.
When I added TEGRA_INITRAMFS_INITRD = "0" to local.conf file I didn't get this error but I'm wondering if it can affect my system.

Answer 1

TLDR;
Just clean image recipe working directory with bitbake -c cleansstate tegra-minimal-initramfs and also bitbake -c cleansstate core-image-minimal just in case. Than build should work, but it may be not reproducible. That is, maybe you'll have to call this two cleansstate commands before building images (tegra-minimal-initramfs and core-image-minimal) every time.
I got same issue when migrated my project (not connected with Tegra) to Yocto 3.2. The issue was with pseudo - it is a fakeroot-tool, that is used in Yocto for generating rootfs with right files permissions (you run bitbake as an ordinary user, not root, but get rootfs with all files belonging to root). Here is bug i've posted with my patch.
But you are using Yocto 3.1.5 as i see, so your issue is different. The core reason is that during some package build (the one that was excluded by TEGRA_INITRAMFS_INITRD = "0") pseudo remembered, that some file should belong to user 1000, but during building tegra-minimal-initramfs (generation of initramfs) user 1000 was not found in initramfs itself... because there are only root and some basic Linux users.
To your question, may anything break if you leave TEGRA_INITRAMFS_INITRD = "0". Likely yes. Here is where this variable is applied. It is used during U-Boot build and looks like it turns off initramfs usage at all. So with TEGRA_INITRAMFS_INITRD = "0" your final image wouldn't include initramfs file. If the device has some fallback mechanism to boot without initramfs, seems you are ok. If not - try cleansstate.