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Groups > linux.kernel > #1684696
| From | Jerome Glisse <jglisse@redhat.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [HMM 12/15] mm/migrate: new memory migration helper for use with device memory v4 |
| Date | 2017-07-11 01:50 +0200 |
| Message-ID | <u1QBc-38v-7@gated-at.bofh.it> (permalink) |
| References | (1 earlier) <tJYQz-8az-67@gated-at.bofh.it> <tWMeR-X0-3@gated-at.bofh.it> <tYdmF-3lY-3@gated-at.bofh.it> <tYeVr-4aS-11@gated-at.bofh.it> <u1POO-2A7-5@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
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On Mon, Jul 10, 2017 at 03:59:37PM -0700, Evgeny Baskakov wrote: > On 6/30/17 5:57 PM, Jerome Glisse wrote: > ... > > Hi Jerome, > > I am seeing a strange crash in our code that uses the hmm_device_new() > helper. After the driver is repeatedly loaded/unloaded, hmm_device_new() > suddenly returns NULL. > > I have reproduced this with the dummy driver from the hmm-next branch: > > BUG: unable to handle kernel NULL pointer dereference at 0000000000000208 Horrible stupid bug in the code, most likely from cut and paste. Attached patch should fix it. I don't know how long it took for you to trigger it. Jérôme
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Re: [HMM 12/15] mm/migrate: new memory migration helper for use with device memory v4 Evgeny Baskakov <ebaskakov@nvidia.com> - 2017-07-11 01:00 +0200
Re: [HMM 12/15] mm/migrate: new memory migration helper for use with device memory v4 Jerome Glisse <jglisse@redhat.com> - 2017-07-11 01:50 +0200
Re: [HMM 12/15] mm/migrate: new memory migration helper for use with device memory v4 Evgeny Baskakov <ebaskakov@nvidia.com> - 2017-07-11 02:20 +0200
Re: [HMM 12/15] mm/migrate: new memory migration helper for use with device memory v4 Jerome Glisse <jglisse@redhat.com> - 2017-07-11 03:00 +0200
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