Control: forwarded -1 https://lore.kernel.org/all/aZMt6sSlpKK_JAdT@monoceros
Hello Paul, On Tue, Feb 10, 2026 at 12:19:45PM +0000, Paul Kerry wrote: > Subject: linux-image-6.12.69+deb13-amd64: hp_bioscfg mm/page_alloc.c:4802 > warning > Package: src:linux > Version: 6.12.69-1 > Severity: normal > X-Debbugs-Cc: [email protected] > Dear Maintainer, > *** Reporter, please consider answering these questions, where appropriate *** > * What led up to the situation? > Booting a system into the recent debian 6.12.69+deb13-amd64 kernel upgrade > from 6.12.63+deb13-amd64 Probably the relevant difference between these two kernel versions is commit b2e79963525205707c87391a01435cfdc9fc2d1e (https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-6.12.y&id=b2e79963525205707c87391a01435cfdc9fc2d1e). Can you confirm that when booting the older kernel, running modprobe hp_bioscfg will break in the same way as the new kernel? If so, the driver was broken already before and just unused. You can achieve this behaviour with 6.12.69, too, by blacklisting the hp_bioscfg module. Either by adding: module_blacklist=hp_bioscfg on the kernel command line, or echo blacklist hp_bioscfg >> /etc/modprobe.d/broken-hp-bioscfg.conf update-initramfs -k all -u > * What exactly did you do (or not do) that was effective (or > ineffective)? > n/a > * What was the outcome of this action? > dmesg under 6.12.69+deb13-amd64 is now displaying the following... > [ 3.346704] ------------[ cut here ]------------ > [ 3.347194] WARNING: CPU: 11 PID: 606 at mm/page_alloc.c:4802 > __alloc_pages_noprof+0x2a7/0x310 This is if (WARN_ON_ONCE_GFP(order > MAX_PAGE_ORDER, gfp)) return NULL; which is probably triggered by bioscfg_drv.enumeration_data = kcalloc(bioscfg_drv.enumeration_instances_count, sizeof(*bioscfg_drv.enumeration_data), GFP_KERNEL); I manually determined sizeof(*bioscfg_drv.enumeration_data) to be around 20K. I have no idea about what the driver does here, but it seems to request more than 2**10 pages continuous pages here which suggests that bioscfg_drv.enumeration_instances_count, is bigger than 200. @Jorge: Is that expected? I dropped much context (mostly automatically collected information about the machine where this triggered). If you're intested in that, check out https://bugs.debian.org/1127612. Best regards Uwe
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