Package: linux-image-4.9.0-9-amd64 Version: 4.9.168-1+deb9u3 Severity: important
Dear fellow DDs, we (Univention GmbH) have several reports of a memory leak wtih 4.9.168 as shipped by Debian (and used by us): https://help.univention.com/t/memoryleak-auf-slave-contoller/11892/8 https://forge.univention.org/bugzilla/show_bug.cgi?id=49614 I was not yet able to pin-point the area where the leak occurs, but the bug seemd to be fixed after switching to 4.9.174.a( I hand-applied the incremental patches on top of Debians 4.9.168 fixing the rejects and enabled KMEMLEAK.) The fix can be earlied than 174; I chose that version from a hint given by one of our customers, who reported 174 to be fixed. 4.9.144 was also fine (at leat no leak was observed). Stopping all processes did NOT free the memory again. My interpretation of this is, that the leak is not in user-space, but in kernel-land. <https://www.kernel.org/doc/html/v4.10/dev-tools/kmemleak.html> does not show any leaks so far. One of the affected systems is a system of us, where I can do some limited testing, e.g. install self-compiled kernel version. As I don't have a (simple) reproducer running `git bisect` is somehow inefficient. So if you have any idea on what to test or where I can help just ask. -- System Information: Debian Release: 9.9 APT prefers APT policy: (500, 'stretch') Architecture: amd64 (x86_64) Kernel: Linux 4.9.0-9-amd64 (SMP w/2 CPU cores) Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8), LANGUAGE=de_DE.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages linux-image-4.9.0-9-amd64 depends on: ii initramfs-tools [linux-initramfs-tool] 0.130 ii kmod 23-2 ii linux-base 4.5 Versions of packages linux-image-4.9.0-9-amd64 recommends: ii firmware-linux-free 3.4 ii irqbalance 1.1.0-2.3 Versions of packages linux-image-4.9.0-9-amd64 suggests: pn debian-kernel-handbook <none> ii grub-pc 2.02~beta3-5+deb9u1A~4.3.3.201812061306 pn linux-doc-4.9 <none> Versions of packages linux-image-4.9.0-9-amd64 is related to: ii firmware-amd-graphics 20161130-5 ii firmware-atheros 20161130-5 ii firmware-bnx2 20161130-5 ii firmware-bnx2x 20161130-5 ii firmware-brcm80211 20161130-5 ii firmware-cavium 20161130-5 pn firmware-intel-sound <none> ii firmware-intelwimax 20161130-5 pn firmware-ipw2x00 <none> pn firmware-ivtv <none> ii firmware-iwlwifi 20161130-5 ii firmware-libertas 20161130-5 ii firmware-linux-nonfree 20161130-5 ii firmware-misc-nonfree 20161130-5 ii firmware-myricom 20161130-5 ii firmware-netxen 20161130-5 ii firmware-qlogic 20161130-5 ii firmware-realtek 20161130-5 pn firmware-samsung <none> pn firmware-siano <none> ii firmware-ti-connectivity 2016113
