On Sat, 7 May 2022 09:21:25 +1200 Michael Cree wrote: > Alpha kernel has been exhibiting rare and random memory > corruptions/segaults in user space since the 5.9.y kernel. First seen > on the Debian Ports build daemon when running 5.10.y kernel resulting > in the occasional (one or two a day) build failures with gcc ICEs either > due to self detected corrupt memory structures or segfaults. Have been > running 5.8.y kernel without such problems for over six months. > > Tried bisecting last year but went off track with incorrect good/bad > determinations due to rare nature of bug. After trying a 5.16.y kernel > early this year and seen the bug is still present retried the bisection > and have got to: > > aae466b0052e1888edd1d7f473d4310d64936196 is the first bad commit > commit aae466b0052e1888edd1d7f473d4310d64936196 > Author: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx> > Date: Tue Aug 11 18:30:50 2020 -0700 > > mm/swap: implement workingset detection for anonymous LRU > > > Pretty confident this is the bad commit as the kernel built to the parent > commit (3852f6768ede54...) has not failed in four days running. Always have > seen the failure within one day of running in past. See if the fix to the syzbot bisection [1] is not a cure to your issue. [1] https://lore.kernel.org/lkml/000000000000625fa705dd1802e3@xxxxxxxxxx/
