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When running tests depending on entropy pool being ready on armv7 (eg:
test_openscap.py, which runs the 'oscap' binary, which tries to get
random bytes, even with simple commands), the test may fail on timeout
due to the entropy pool not being ready; this is confirmed by the test
being blocked until "crng init done" line appears in the kernel logs.
A solution could be to just increase the test timeout to a value large
enough to make sure that the entropy pool will be ready in most cases,
but it may be hard to find a value that fits all use cases, and all
tests depending on entropy being ready would deserve the same fix.
Another solution is to replicate what commit 7acb32dabb
("support/testing: add builtin armv5 kernel 4.19 with entropy") did: it
added the virtio-rng-pci argument to allow the guest machine to use host
entropy. The armv7 kernel used for testing seems to be built with the
relevant virtio configuration to allow a similar pass-through, so pass
virtio-rng-device to armv7 kernel when running tests.
Signed-off-by: Alexis Lothoré <alexis.lothore@bootlin.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Buildroot is a simple, efficient and easy-to-use tool to generate embedded Linux systems through cross-compilation. The documentation can be found in docs/manual. You can generate a text document with 'make manual-text' and read output/docs/manual/manual.text. Online documentation can be found at https://buildroot.org/docs.html To build and use the buildroot stuff, do the following: 1) run 'make menuconfig' 2) select the target architecture and the packages you wish to compile 3) run 'make' 4) wait while it compiles 5) find the kernel, bootloader, root filesystem, etc. in output/images You do not need to be root to build or run buildroot. Have fun! Buildroot comes with a basic configuration for a number of boards. Run 'make list-defconfigs' to view the list of provided configurations. Please feed suggestions, bug reports, insults, and bribes back to the buildroot mailing list: buildroot@buildroot.org You can also find us on #buildroot on OFTC IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches