12395 2017-12-05 02:15:42 +0000 kernel set up with devtool modify builds with wrong config after cleaning 2025-07-29 00:36:43 +0000 1 1 7 Build System, Metadata & Runtime OE-Core Scripts and Tools 2.4 x86 Multiple NEW Medium+ normal 5.99 1 bluelightning pidge ccasciato jacobpanov randy.macleod ross.burton tim.orling --- --- No (bug/feature does not impact docs) oldest_to_newest 78508 0 bluelightning 2017-12-05 02:15:42 +0000 If you run devtool modify on the kernel, run bitbake -c clean, then try to build the kernel again the configuration will be different: devtool modify virtual/kernel bitbake virtual/kernel cp tmp/work-shared/qemux86-64/kernel-build-artifacts/.config kconfig-good bitbake -c clean virtual/kernel bitbake virtual/kernel diff -udN kconfig-good tmp/work/qemux86_64-poky-linux/linux-yocto/4.12.14+git999-r0/linux-yocto-4.12.14+git999/.config (The second build of the kernel will almost certainly fail because it will try to generate X.509 certificates and openssl-native isn't in DEPENDS, so the openssl command won't be available to run.) There is some logic set up in the workspace bbappend for the kernel that sets up the configuration, and I suspect this is where the problem lies - it moves the configuration into place from ${S} to ${B} the first time but the second time around it's not there to move, and you get the default kernel configuration instead. 93263 1 randy.macleod 2022-05-12 15:30:01 +0000 May also need a test. 96865 2 randy.macleod 2023-10-24 14:24:33 +0000 Bulk move from 4.99 or 0.00 to 5.99 102516 3 jacobpanov 2025-07-27 01:15:04 +0000 I found that the do_kernel_configme:prepend function standard.py unconditionally moved existing .config files, causing legitimate user configurations to be lost after clean/rebuild cycles. I changed the logic to preserve legitimate user configurations by checking for .config.baseline presence: # Before (problematic): if [ -e ${S}/.config ]; then mv ${S}/.config ${S}/.config.old fi # After: if [ -e ${S}/.config ] && [ ! -e ${S}/.config.baseline ]; then mv ${S}/.config ${S}/.config.old fi User configs with.config.baseline are preserved and stale configs without .config.baseline are moved appropriately. Patch available for integration. 102517 4 5128 jacobpanov 2025-07-27 01:19:16 +0000 Created attachment 5128 Fix for kernel config loss in devtool modify workflow The do_kernel_configme:prepend function in scripts/lib/devtool/standard.py unconditionally moved existing .config files, causing legitimate user configurations to be lost after clean/rebuild cycles. Enhanced the logic to preserve legitimate user configurations by checking for .config.baseline presence: # Before: if [ -e ${S}/.config ]; then mv ${S}/.config ${S}/.config.old fi # After: if [ -e ${S}/.config ] && [ ! -e ${S}/.config.baseline ]; then mv ${S}/.config ${S}/.config.old fi 5128 2025-07-27 01:19:16 +0000 2025-07-27 01:19:16 +0000 Fix for kernel config loss in devtool modify workflow 0001-devtool-Fix-kernel-config-loss-after-clean-rebuild-i.patch text/plain 1845 jacobpanov RnJvbSBhZTFmZjQ3YjY4Nzk0NzExMDU1NWM4MWQ4ZmYxY2MyYmRkNzFjM2U2IE1vbiBTZXAgMTcg MDA6MDA6MDAgMjAwMQpGcm9tOiBqYWNvYnBhbm92IDxqYWNvYnBhbm92QGdtYWlsLmNvbT4KRGF0 ZTogU2F0LCAyNiBKdWwgMjAyNSAyMTowNToxNyAtMDQwMApTdWJqZWN0OiBbUEFUQ0hdIGRldnRv b2w6IEZpeCBrZXJuZWwgY29uZmlnIGxvc3MgYWZ0ZXIgY2xlYW4vcmVidWlsZCBpbiBtb2RpZnkK IHdvcmtmbG93CgpUaGUgZG9fa2VybmVsX2NvbmZpZ21lOnByZXBlbmQgZnVuY3Rpb24gd2FzIHVu Y29uZGl0aW9uYWxseSBtb3ZpbmcgYW55CmV4aXN0aW5nIC5jb25maWcgZmlsZSB0byAuY29uZmln Lm9sZCwgY2F1c2luZyBsZWdpdGltYXRlIHVzZXIKY29uZmlndXJhdGlvbnMgdG8gYmUgbG9zdCBh ZnRlciBjbGVhbi9yZWJ1aWxkIGN5Y2xlcy4KCkVuaGFuY2VkIHRoZSBsb2dpYyB0byBkaXN0aW5n dWlzaCBiZXR3ZWVuIGxlZ2l0aW1hdGUgdXNlciBjb25maWd1cmF0aW9ucwphbmQgc3RhbGUgY29u ZmlncyBieSBjaGVja2luZyBmb3IgLmNvbmZpZy5iYXNlbGluZSBwcmVzZW5jZToKLSBQcmVzZXJ2 ZXMgdXNlciBjb25maWdzIHdoZW4gLmNvbmZpZy5iYXNlbGluZSBleGlzdHMKLSBNb3ZlcyBzdGFs ZSBjb25maWdzIHdoZW4gLmNvbmZpZy5iYXNlbGluZSBpcyBhYnNlbnQKClRoaXMgcmVzb2x2ZXMg QnVnIDEyMzk1IHdoZXJlIGtlcm5lbCBjb25maWd1cmF0aW9ucyB3b3VsZCByZXZlcnQgdG8KZGVm YXVsdHMgYWZ0ZXIgJ2RldnRvb2wgbW9kaWZ5JyAtPiAnYml0YmFrZSAtYyBjbGVhbicgLT4gcmVi dWlsZCBjeWNsZXMuCgpGaXhlczogQnVnIDEyMzk1ClNpZ25lZC1vZmYtYnk6IEphY29iIFBhbm92 IDxqcGFub3ZAZXhhbXBsZS5jb20+Ci0tLQogc2NyaXB0cy9saWIvZGV2dG9vbC9zdGFuZGFyZC5w eSB8IDQgKysrLQogMSBmaWxlIGNoYW5nZWQsIDMgaW5zZXJ0aW9ucygrKSwgMSBkZWxldGlvbigt KQoKZGlmZiAtLWdpdCBhL3NjcmlwdHMvbGliL2RldnRvb2wvc3RhbmRhcmQucHkgYi9zY3JpcHRz L2xpYi9kZXZ0b29sL3N0YW5kYXJkLnB5CmluZGV4IDFmZDU5NDdjNDEuLjUwYjg5NDljYjYgMTAw NjQ0Ci0tLSBhL3NjcmlwdHMvbGliL2RldnRvb2wvc3RhbmRhcmQucHkKKysrIGIvc2NyaXB0cy9s aWIvZGV2dG9vbC9zdGFuZGFyZC5weQpAQCAtOTQ4LDcgKzk0OCw5IEBAIGRlZiBtb2RpZnkoYXJn cywgY29uZmlnLCBiYXNlcGF0aCwgd29ya3NwYWNlKToKIAogICAgICAgICAgICAgaWYgYmIuZGF0 YS5pbmhlcml0c19jbGFzcygna2VybmVsJywgcmQpOgogICAgICAgICAgICAgICAgIGYud3JpdGUo J1xuZG9fa2VybmVsX2NvbmZpZ21lOnByZXBlbmQoKSB7XG4nCi0gICAgICAgICAgICAgICAgICAg ICAgICAnICAgIGlmIFsgLWUgJHtTfS8uY29uZmlnIF07IHRoZW5cbicKKyAgICAgICAgICAgICAg ICAgICAgICAgICcgICAgaWYgWyAtZSAke1N9Ly5jb25maWcgXSAmJiBbICEgLWUgJHtTfS8uY29u ZmlnLmJhc2VsaW5lIF07IHRoZW5cbicKKyAgICAgICAgICAgICAgICAgICAgICAgICcgICAgICAg ICMgT25seSBtb3ZlIC5jb25maWcgaWYgdGhlcmUgaXMgbm8gLmNvbmZpZy5iYXNlbGluZSxcbicK KyAgICAgICAgICAgICAgICAgICAgICAgICcgICAgICAgICMgaW5kaWNhdGluZyB0aGlzIG1heSBi ZSBhIHN0YWxlIGNvbmZpZyBmcm9tIGEgcHJldmlvdXMgYnVpbGRcbicKICAgICAgICAgICAgICAg ICAgICAgICAgICcgICAgICAgIG12ICR7U30vLmNvbmZpZyAke1N9Ly5jb25maWcub2xkXG4nCiAg ICAgICAgICAgICAgICAgICAgICAgICAnICAgIGZpXG4nCiAgICAgICAgICAgICAgICAgICAgICAg ICAnfVxuJykKLS0gCjIuMzQuMQoK