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- invalid opcode: 0000 [#1] SMP KASAN PTI To: Arnd Bergmann Cc: Naresh Kamboju , open list , Linux-Next Mailing List , linux-mm , lkft-triage@lists.linaro.org, LTP List , Cgroups , Andrew Morton , Michal Hocko , Yafang Shao , Joel Fernandes , "Uladzislau Rezki (Sony)" , Matthew Wilcox , Oleksiy Avramchenko , Steven Rostedt , Stephen Rothwell , Mike Rapoport , David Hildenbrand , Joerg Roedel , Roman Gushchin , Dennis Zhou Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: 8684C1C1D5281 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam04 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Wed, Jul 22, 2020 at 1:55 AM Arnd Bergmann wrote: > > Adding Roman Gushchin to Cc, he touched that code recently. > > Naresh, if nobody has any immediate ideas, you could double-check by > reverting these commits: > > e0b8d00b7561 mm: memcg/percpu: per-memcg percpu memory statistics > 99411af13595 mm/percpu: fix 'defined but not used' warning > 9398ce6306b6 mm-memcg-percpu-account-percpu-memory-to-memory-cgroups-fix-fix > 54116d471779 mm-memcg-percpu-account-percpu-memory-to-memory-cgroups-fix > ec518e090843 mm: memcg/percpu: account percpu memory to memory cgroups > 9bc897d18dc3 percpu: return number of released bytes from pcpu_free_area() > > Arnd > I think syzbot has bisected this issue to the suspect patch. https://lore.kernel.org/lkml/00000000000043f09405ab01b0b8@google.com/