在2024年6月28日六月 下午6:57，Yu Zhao写道： > Hi, > > OpenWrt folks ran into MCEs caused by multiple matching TLB entries > [1], after they updated their kernel from v6.1 to v6.6. > > I reported similar crashes previously [2], on v6.4. So they asked me > whether I'm aware of a fix from the mainline, which I am not. > on > I took a quick look from the MM's POV and found nothing obviously > wrong. I'm hoping they have better luck with the MIPS experts. Hi Yu, I never hit such problem on my (non-bcm) 74Kc systems. However a quick glance suggested it may be related to Wired TLB entries on your platform. Both duplicated TLB entries, Index 2 and 3, are all below "Wired" setting, which means they are not managed by mm, but platform code. Thanks - Jiaxun > > Thanks! > > [1] https://github.com/openwrt/openwrt/pull/15635 > [2] > https://lore.kernel.org/linux-mm/CAOUHufbAjZd4Mxkio9OGct-TZ=L0QRG+_6Xa7atQVFN_4ez86w@xxxxxxxxxxxxxx/ > -- - Jiaxun
