On Wed, 5 Feb 2020 at 11:14, Rafał Miłecki <zaj...@gmail.com> wrote: > I noticed that my bcm53xx devices run out of memory after running > wireless monitor interface for about 2 days. > > This problem occurs since 0694d08c84fd ("bcm53xx: switch to kernel > 4.9") which bumped kernel from 4.4.53 to 4.9.14 and is still present > when using 4.14. > > Interestingly this memory drain requires at least one of: > net.ipv6.conf.default.forwarding=1 > net.ipv6.conf.all.forwarding=1 > to be set. OpenWrt happens to use both by default. > > This is *not* a memory leak. Restarting wireless interfaces frees all > consumed memory. > > Any idea what may be causing this?
This regression is caused by 1666d49e1d41 ("mld: do not remove mld souce list info when set link down") which was later backported as 53a76d633b86 to the linux-4.9.y branch. Reverting that commit from 4.9.14 or 4.14.169 /fixes/ device running out of memory problem. _______________________________________________ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel