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Groups > linux.debian.kernel > #73938
| From | Salvatore Bonaccorso <carnil@debian.org> |
|---|---|
| Newsgroups | linux.debian.bugs.dist, linux.debian.kernel |
| Subject | Bug#988044: linux-image-5.10.0-0.bpo.4-amd64: Kernel panic due nfsd error: refcount_t: addition on 0; use-after-free |
| Date | 2021-12-13 21:40 +0100 |
| Message-ID | <Du0h3-1sv-1@gated-at.bofh.it> (permalink) |
| References | (1 earlier) <Cb8qZ-5NL-1@gated-at.bofh.it> <CaYhY-8pZ-1@gated-at.bofh.it> <DmdXQ-5UA-15@gated-at.bofh.it> <CaYhY-8pZ-1@gated-at.bofh.it> <DmdXQ-5UA-15@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Cross-posted to 2 groups.
Hi Olivier, On Mon, Nov 22, 2021 at 09:27:26AM +0000, Olivier Monaco wrote: > Hi Salvatore, > > Sorry for my very very late answer. > > I tried many actions to reproduce and/or fix this problem. We > upgraded our kernel to the lastest backport version for Buster but > the issue was still there. We upgraded to Bullseye at the end of > October but today this issue occurred again. > > I think it related to https://lore.kernel.org/linux-nfs/YV3vDQOPVgxc%2FJ99@eldamar.lan/ > > I just send an email to this thread. > > Something that may be important: our groups of servers are used to > host websites, some with only one website, some with many. For now, > this issue only occurred on NFS servers part of a group with many > websites. But one of the most loaded NFS server is also used only > for one website and has never had this issue. May be this issue > occurs only when the NFS server is serving many different files. I was never able to reliably reproduce the issue myself, but upstream now thinks to have isolated the issue and should be fixed with: https://git.kernel.org/linus/548ec0805c399c65ed66c6641be467f717833ab5 Fixes are as well queued to stable series. Regards, Salvatore
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Bug#988044: linux-image-5.10.0-0.bpo.4-amd64: Kernel panic due nfsd error: refcount_t: addition on 0; use-after-free Salvatore Bonaccorso <carnil@debian.org> - 2021-05-04 21:00 +0200
Bug#988044: linux-image-5.10.0-0.bpo.4-amd64: Kernel panic due nfsd error: refcount_t: addition on 0; use-after-free Olivier Monaco <olivier@bm-services.com> - 2021-11-22 10:40 +0100
Bug#988044: linux-image-5.10.0-0.bpo.4-amd64: Kernel panic due nfsd error: refcount_t: addition on 0; use-after-free Salvatore Bonaccorso <carnil@debian.org> - 2021-12-13 21:40 +0100
Bug#988044: linux-image-5.10.0-0.bpo.4-amd64: Kernel panic due nfsd error: refcount_t: addition on 0; use-after-free Olivier Monaco <olivier@bm-services.com> - 2021-12-14 10:00 +0100
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