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Date: Wed, 21 Sep 2022 19:02:59 +0200 From: Michal Koutný <mkoutny@...e.com> To: Anatoly Pugachev <matorola@...il.com> Cc: Vasily Averin <vvs@...nvz.org>, Andrew Morton <akpm@...ux-foundation.org>, kernel@...nvz.org, Linux Kernel list <linux-kernel@...r.kernel.org>, linux-mm <linux-mm@...ck.org>, Shakeel Butt <shakeelb@...gle.com>, Roman Gushchin <roman.gushchin@...ux.dev>, Vlastimil Babka <vbabka@...e.cz>, Michal Hocko <mhocko@...e.com>, Florian Westphal <fw@...len.de>, "David S. Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Eric Dumazet <edumazet@...gle.com>, cgroups@...r.kernel.org, Sparc kernel list <sparclinux@...r.kernel.org> Subject: Re: [sparc64] fails to boot, (was: Re: [PATCH memcg v6] net: set proper memcg for net_init hooks allocations) Hello. Thanks for the report. On Wed, Sep 21, 2022 at 05:44:56PM +0300, Anatoly Pugachev <matorola@...il.com> wrote: > On Sun, Sep 18, 2022 at 12:39 PM Anatoly Pugachev <matorola@...il.com> wrote: > > > > > > I'm unable to boot my sparc64 VM anymore (5.19 still boots, 6.0-rc1 does not), > > bisected up to this patch, > > > > mator@...p:~/linux-2.6$ git bisect bad > > 1d0403d20f6c281cb3d14c5f1db5317caeec48e9 is the first bad commit > > commit 1d0403d20f6c281cb3d14c5f1db5317caeec48e9 > > reverting this patch makes my sparc64 box boot successfully. The failed address falls into vmmemmap region (per your boot log output). It looks like the respective page/folio (of init_net struct) is unbacked there (and likely folio_test_slab fails dereferencing ->flags). Would you mind sharing your kernel's config? (I'm most curious about CONFIG_SPARSMEM_VMEMMAP, I'm not familiar with your arch at all though.) Thanks, Michal
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