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spf=pass (imf26.hostedemail.com: domain of urezki@gmail.com designates 209.85.208.47 as permitted sender) smtp.mailfrom=urezki@gmail.com Authentication-Results: imf26.hostedemail.com; dkim=pass header.d=gmail.com header.s=20210112 header.b=YHDSC+bw; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (imf26.hostedemail.com: domain of urezki@gmail.com designates 209.85.208.47 as permitted sender) smtp.mailfrom=urezki@gmail.com X-Rspam-User: X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: BED111400B1 X-Stat-Signature: nerk9cg953fg4u86tx4jatcczgamt6ic X-HE-Tag: 1655721852-735074 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000088, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: > > > > > Is it easy to reproduce? If so could you please describe the steps? As i see > > the freeing of the "vb" is RCU safe whereas vb->va is not. But from the first > > glance i do not see how it can accessed twice. Hm.. > It was raised from a monkey test on A13_k515 system and got 1/20 pcs > failed. IMO, vb->va which out of vmap_purge_lock protection could race > with a concurrent ra freeing within __purge_vmap_area_lazy. > Do you have exact steps how you run "monkey" test? -- Uladzislau Rezki