archiver.bbclass: some recipes that uses the kernelsrc bbclass uses the shared source

This fix a race that happens when building some of the followning recipes
with kernel at same time.

The kernelsrc uses the kernel shared source dir as their source
S = "${STAGING_KERNEL_DIR}" and this will cause a race in the
do_unpack_and_patch task, when bitbake runs the
bb.build.exec_func('do_unpack', d) because do_unpack will
clean the source dir on startup.

| ok: note that S != "${STAGING_KERNEL_DIR} for this ones
openembedded-core/meta/recipes-kernel/perf/perf.bb:inherit kernelsrc
meta-openembedded/meta-oe/recipes-kernel/usbip-tools/usbip-tools.bb:inherit kernelsrc autotools-brokensep

| broken
meta-openembedded/meta-oe/recipes-kernel/cpupower/cpupower.bb:inherit kernelsrc kernel-arch bash-completion
meta-openembedded/meta-oe/recipes-kernel/spidev-test/spidev-test.bb:inherit bash-completion kernelsrc kernel-arch
meta-openembedded/meta-oe/recipes-kernel/intel-speed-select/intel-speed-select.bb:inherit kernelsrc
meta-openembedded/meta-oe/recipes-kernel/bpftool/bpftool.bb:inherit bash-completion kernelsrc kernel-arch

The issue can be replicated with:

INHERIT += "archiver"
ARCHIVER_MODE[src] = "original"
ARCHIVER_MODE[diff] = "1"

And:

R=<recipe> bitbake -c cleansstate virtual/kernel $R && bitbake $R

Signed-off-by: Jose Quaresma <jose.quaresma@foundries.io>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

diff --git a/meta/classes/archiver.bbclass b/meta/classes/archiver.bbclass
index 5da369d4226f083f7e34fa8f803ebb72d2f54599..dca4271a69a61c3f43075c38eede98de87d892dd 100644 (file)
--- a/meta/classes/archiver.bbclass
+++ b/meta/classes/archiver.bbclass
@@ -459,7 +459,9 @@ def create_diff_gz(d, src_orig, src, ar_outdir):
 
 def is_work_shared(d):
     pn = d.getVar('PN')
-    return bb.data.inherits_class('kernel', d) or pn.startswith('gcc-source')
+    return pn.startswith('gcc-source') or \
+        bb.data.inherits_class('kernel', d) or \
+        (bb.data.inherits_class('kernelsrc', d) and d.getVar('S') == d.getVar('STAGING_KERNEL_DIR'))
 
 # Run do_unpack and do_patch
 python do_unpack_and_patch() {