Messages in this thread | | | From | Qian Cai <> | Subject | Re: [PATCH v15 00/23] Generic page walk and ptdump | Date | Thu, 5 Dec 2019 08:15:02 -0500 |
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> On Dec 4, 2019, at 11:32 AM, Steven Price <Steven.Price@arm.com> wrote: > > I've bisected this problem and it's a merge conflict with: > > ace88f1018b8 ("mm: pagewalk: Take the pagetable lock in walk_pte_range()")
Sigh, how does that commit end up merging in the mainline without going through Andrew’s tree and missed all the linux-next testing? It was merged into the mainline Oct 4th?
> Reverting that commit "fixes" the problem. That commit adds a call to > pte_offset_map_lock(), however that isn't necessarily safe when > considering an "unusual" mapping in the kernel. Combined with my patch > set this leads to the BUG when walking the kernel's page tables. > > At this stage I think it's best if Andrew drops my series and I'll try > to rework it on top -rc1 fixing up this conflict and the other x86 > 32-bit issue that has cropped up.
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