On Tue, Feb 18, 2020 at 01:41:07PM +0530, Santosh Sivaraj wrote: > Hi Greg/Sasha, > > The commit a46cc7a90fd (powerpc/mm/radix: Improve > TLB/PWC flushes) picked up in 4.14 release has the potential to cause random > memory corruption. This was fixed in 5.5 by the following patches. > > 12e4d53f3f powerpc/mmu_gather: enable RCU_TABLE_FREE even for !SMP case > 0ed1325967 mm/mmu_gather: invalidate TLB correctly on batch allocation failure and flush > 0758cd8304 asm-generic/tlb: avoid potential double flush > > It's a bit tricky to backport to 4.14 stable (though I have a backport to 4.19 > stable, which I will post shortly). If you think it's important to fix this in > 4.14, it would easier to revert the above mentioned commit (a46cc7a90fd). > > Please let me know your thoughts. A revert is probably best, can you send it? thanks, greg k-h
