On Fri, Aug 23, 2024 at 12:42:18PM GMT, Bert Karwatzki wrote: > Am Freitag, dem 23.08.2024 um 10:55 +0100 schrieb Lorenzo Stoakes: [snip] > > On Fri, Aug 23, 2024 at 10:43:11AM GMT, Bert Karwatzki wrote: > > > > [snip] > > > I'm running the v7 Patchset on linux-next-20240822 and I get lots of these > > > errors (right on boot) (both when using the complete patchset and when using > > > only the patches up to this): > > > > Hm curious, I'm running this in qemu with CONFIG_DEBUG_VM set and don't see > > this at lesat on next-20240823. > > > > Liam's series is based on the mseal series by Pedro, not sure if that wasn't in > > 22 somehow? > > > > Can you try with 23, from tip and: > > > > b4 shazam 20240822192543.3359552-1-Liam.Howlett@xxxxxxxxxx > > > > To grab this series just to be sure? > > > > Because that'd definitely be very weird + concerning and something we hadn't > > seen before (I don't think?) for the mm->data_vm to be incorrect... > > > > > [snip] > > I grabbed the patches by saving the v7 patch emails as an mbox file and using > git am to apply them (which worked without error) and git pull --rebase to > update the series to next-20240823 (which works without conflicts). Thanks, you are right, see other thread for an explanation. Good spot! [snip - for brevity cutting dmesg logs, but much appreciated!] These messages aside everything seems to work (I sending this email using the > affected kernel) so I'm wondering if the checks aren't a little too paranoid. Just to make the point - if these checks were the correct way around, this would indicate that key mm counters are underflowing, which would be very serious indeed - so just paranoid enough :) The paranoia is because this should never happen. > > By the way: These 6 patches by Pedro Falcato are present in linux-next-20240822, > too: > > mm: remove can_modify_mm() Pedro Falcato > mseal: replace can_modify_mm_madv with a vma variant Pedro Falcato > mm/mremap: replace can_modify_mm with can_modify_vma Pedro Falcato > mm/mprotect: replace can_modify_mm with can_modify_vma Pedro Falcato > mm/munmap: replace can_modify_mm with can_modify_vma Pedro Falcato > mm: move can_modify_vma to mm/vma.h Pedro Falcato > > Bert Karwatzki > Thanks for confirming!
