<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv="Content-Type" content="text/html; charset=us-ascii"> <meta name="Generator" content="Microsoft Word 15 (filtered medium)"> <style></style> </head> <body lang="EN-US" link="#0563C1" vlink="#954F72" style="word-wrap:break-word"> <div class="WordSection1"> Hello Rafael,<o:p></o:p> <o:p> </o:p> Hope you are doing well. I am Chaitanya from the linux graphics team in Intel.<o:p></o:p> <o:p></o:p> This mail is regarding a regression we are seeing in our CI runs[1] on linux-next repository.<o:p></o:p> <o:p> </o:p> On next-20231003 [2], we are seeing the following error<o:p></o:p> <o:p> </o:p> ```````````````````````````````````````````````````````````````````````````````<o:p></o:p> <4>[ 14.093075] ------------[ cut here ]------------<o:p></o:p> <4>[ 14.097664] WARNING: CPU: 0 PID: 1 at drivers/thermal/thermal_trip.c:18 for_each_thermal_trip+0x83/0x90<o:p></o:p> <4>[ 14.106977] Modules linked in:<o:p></o:p> <4>[ 14.110017] CPU: 0 PID: 1 Comm: swapper/0 Tainted: G W 6.6.0-rc4-next-20231003-next-20231003-gc9f2baaa18b5+ #1<o:p></o:p> <4>[ 14.121305] Hardware name: Intel Corporation Meteor Lake Client Platform/MTL-P DDR5 SODIMM SBS RVP, BIOS MTLPFWI1.R00.3323.D89.2309110529 09/11/2023<o:p></o:p> <4>[ 14.134478] RIP: 0010:for_each_thermal_trip+0x83/0x90<o:p></o:p> <4>[ 14.139496] Code: 5c 41 5d c3 cc cc cc cc 5b 31 c0 5d 41 5c 41 5d c3 cc cc cc cc 48 8d bf f0 05 00 00 be ff ff ff ff e8 21 a2 2d 00 85 c0 75 9a <0f> 0b eb 96 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90<o:p></o:p> <o:p> </o:p> Details log can be found in [3].<o:p></o:p> <o:p> </o:p> After bisecting the tree, the following patch [4] seems to be causing the regression.<o:p></o:p> <o:p> </o:p> commit d5ea889246b112e228433a5f27f57af90ca0c1fb<o:p></o:p> Author: Rafael J. Wysocki <a href="mailto:rafael.j.wysocki@intel.com"> rafael.j.wysocki@intel.com</a><o:p></o:p> Date: Thu Sep 21 20:02:59 2023 +0200<o:p></o:p> <o:p> </o:p> ACPI: thermal: Do not use trip indices for cooling device binding<o:p></o:p> <o:p> </o:p> Rearrange the ACPI thermal driver's callback functions used for cooling<o:p></o:p> device binding and unbinding, acpi_thermal_bind_cooling_device() and<o:p></o:p> acpi_thermal_unbind_cooling_device(), respectively, so that they use trip<o:p></o:p> pointers instead of trip indices which is more straightforward and allows<o:p></o:p> the driver to become independent of the ordering of trips in the thermal<o:p></o:p> zone structure.<o:p></o:p> <o:p> </o:p> The general functionality is not expected to be changed.<o:p></o:p> <o:p> </o:p> Signed-off-by: Rafael J. Wysocki <a href="mailto:rafael.j.wysocki@intel.com"> rafael.j.wysocki@intel.com</a><o:p></o:p> Reviewed-by: Daniel Lezcano <a href="mailto:daniel.lezcano@linaro.org"> daniel.lezcano@linaro.org</a><o:p></o:p> <o:p> </o:p> We also verified by moving the head of the tree to the previous commit.<o:p></o:p> <o:p> </o:p> Could you please check why this patch causes the regression and if we can find a solution for it soon?<o:p></o:p> <o:p> </o:p> [1] <a href="https://intel-gfx-ci.01.org/tree/linux-next/combined-alt.html"> https://intel-gfx-ci.01.org/tree/linux-next/combined-alt.html</a>?<o:p></o:p> [2] <a href="https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?h=next-20231003"> https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?h=next-20231003</a><o:p></o:p> [3] <a href="https://intel-gfx-ci.01.org/tree/linux-next/next-20231003/bat-mtlp-6/boot0.txt"> https://intel-gfx-ci.01.org/tree/linux-next/next-20231003/bat-mtlp-6/boot0.txt</a><o:p></o:p> [4] <a href="https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?h=next-20231003&id=d5ea889246b112e228433a5f27f57af90ca0c1fb"> https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?h=next-20231003&id=d5ea889246b112e228433a5f27f57af90ca0c1fb</a><o:p></o:p> </div> </body> </html>