* BUG: unable to handle kernel paging request at 0000000100000003 - Oops: 0000 [#1] SMP @ 2014-02-21 11:40 poma 2014-02-21 13:08 ` Richard Weinberger 0 siblings, 1 reply; 5+ messages in thread From: poma @ 2014-02-21 11:40 UTC (permalink / raw) To: Mailing-List fedora-kernel Cc: Linux Kernel list, Josh Boyer, Justin M. Forbes, Stanislaw Gruszka Affected kernels - 3.14.0-0.rc3*: - 3.14.0-0.rc3.git0.1 http://koji.fedoraproject.org/koji/buildinfo?buildID=498711 - 3.14.0-0.rc3.git0.7 based on 3.14.0-0.rc3.git0.1 - 3.14.0-0.rc3.git2.1 http://koji.fedoraproject.org/koji/buildinfo?buildID=499061 - 3.14.0-0.rc3.git5.1 http://koji.fedoraproject.org/koji/buildinfo?buildID=499636 Memtest86+ 4.20 - OK http://goo.gl/1nm1nV RHBZ https://bugzilla.redhat.com/show_bug.cgi?id=1067919 messages-Oops-es-3.14.0-0.rc3 https://bugzilla.redhat.com/attachment.cgi?id=865926 poma ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: BUG: unable to handle kernel paging request at 0000000100000003 - Oops: 0000 [#1] SMP 2014-02-21 11:40 BUG: unable to handle kernel paging request at 0000000100000003 - Oops: 0000 [#1] SMP poma @ 2014-02-21 13:08 ` Richard Weinberger 2014-02-21 15:48 ` Jan Kara 0 siblings, 1 reply; 5+ messages in thread From: Richard Weinberger @ 2014-02-21 13:08 UTC (permalink / raw) To: poma Cc: Mailing-List fedora-kernel, Linux Kernel list, Josh Boyer, Justin M. Forbes, Stanislaw Gruszka, Jiri Kosina, Dave Jones, Jan Kara, Christoph Hellwig, eparis, Al Viro, Hugh Dickins, Andrew Morton, Linus Torvalds On Fri, Feb 21, 2014 at 12:40 PM, poma <pomidorabelisima@gmail.com> wrote: > > Affected kernels - 3.14.0-0.rc3*: > > - 3.14.0-0.rc3.git0.1 > http://koji.fedoraproject.org/koji/buildinfo?buildID=498711 > > - 3.14.0-0.rc3.git0.7 based on 3.14.0-0.rc3.git0.1 > > - 3.14.0-0.rc3.git2.1 > http://koji.fedoraproject.org/koji/buildinfo?buildID=499061 > > - 3.14.0-0.rc3.git5.1 > http://koji.fedoraproject.org/koji/buildinfo?buildID=499636 > > Memtest86+ 4.20 - OK > http://goo.gl/1nm1nV > > RHBZ > https://bugzilla.redhat.com/show_bug.cgi?id=1067919 > > messages-Oops-es-3.14.0-0.rc3 > https://bugzilla.redhat.com/attachment.cgi?id=865926 Maybe commits 7053aee26a3548ebaba046ae2e52396ccf56ac6c (fsnotify: do not share events between notification groups) and 85816794240b9659e66e4d9b0df7c6e814e5f603 (fanotify: Fix use after free for permission events) introduced this regression. CC'ing more guys. -- Thanks, //richard ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: BUG: unable to handle kernel paging request at 0000000100000003 - Oops: 0000 [#1] SMP 2014-02-21 13:08 ` Richard Weinberger @ 2014-02-21 15:48 ` Jan Kara 2014-03-03 19:13 ` poma 0 siblings, 1 reply; 5+ messages in thread From: Jan Kara @ 2014-02-21 15:48 UTC (permalink / raw) To: Richard Weinberger Cc: poma, Mailing-List fedora-kernel, Linux Kernel list, Josh Boyer, Justin M. Forbes, Stanislaw Gruszka, Jiri Kosina, Dave Jones, Jan Kara, Christoph Hellwig, eparis, Al Viro, Hugh Dickins, Andrew Morton, Linus Torvalds On Fri 21-02-14 14:08:03, Richard Weinberger wrote: > On Fri, Feb 21, 2014 at 12:40 PM, poma <pomidorabelisima@gmail.com> wrote: > > > > Affected kernels - 3.14.0-0.rc3*: > > > > - 3.14.0-0.rc3.git0.1 > > http://koji.fedoraproject.org/koji/buildinfo?buildID=498711 > > > > - 3.14.0-0.rc3.git0.7 based on 3.14.0-0.rc3.git0.1 > > > > - 3.14.0-0.rc3.git2.1 > > http://koji.fedoraproject.org/koji/buildinfo?buildID=499061 > > > > - 3.14.0-0.rc3.git5.1 > > http://koji.fedoraproject.org/koji/buildinfo?buildID=499636 > > > > Memtest86+ 4.20 - OK > > http://goo.gl/1nm1nV > > > > RHBZ > > https://bugzilla.redhat.com/show_bug.cgi?id=1067919 > > > > messages-Oops-es-3.14.0-0.rc3 > > https://bugzilla.redhat.com/attachment.cgi?id=865926 > > Maybe commits 7053aee26a3548ebaba046ae2e52396ccf56ac6c (fsnotify: do > not share events between notification groups) > and 85816794240b9659e66e4d9b0df7c6e814e5f603 (fanotify: Fix use after > free for permission events) introduced this regression. So the immediate problem seems to be that event->tgid is 0xffffffff instead of a pointer. I don't see how this could be use after free and we unconditionally initialize event->tgid to something sensible. Hum, but if it is an overflow event, we are in a trouble since that doesn't have ->tgid field at all so we read random crap that happens to be beyond the event structure. Actually there seem to be more problems in the handling of overflow event so I better add that to my testing (both for fanotify and inotify). I'll work on the fix. Thanks for report! Honza -- Jan Kara <jack@suse.cz> SUSE Labs, CR ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: BUG: unable to handle kernel paging request at 0000000100000003 - Oops: 0000 [#1] SMP 2014-02-21 15:48 ` Jan Kara @ 2014-03-03 19:13 ` poma 2014-03-03 20:17 ` Jan Kara 0 siblings, 1 reply; 5+ messages in thread From: poma @ 2014-03-03 19:13 UTC (permalink / raw) To: Jan Kara, Richard Weinberger Cc: Mailing-List fedora-kernel, Linux Kernel list, Josh Boyer, Justin M. Forbes, Stanislaw Gruszka, Jiri Kosina, Dave Jones, Christoph Hellwig, eparis, Al Viro, Hugh Dickins, Andrew Morton, Linus Torvalds On 21.02.2014 16:48, Jan Kara wrote: > On Fri 21-02-14 14:08:03, Richard Weinberger wrote: >> On Fri, Feb 21, 2014 at 12:40 PM, poma <pomidorabelisima@gmail.com> wrote: >>> >>> Affected kernels - 3.14.0-0.rc3*: >>> >>> - 3.14.0-0.rc3.git0.1 >>> http://koji.fedoraproject.org/koji/buildinfo?buildID=498711 >>> >>> - 3.14.0-0.rc3.git0.7 based on 3.14.0-0.rc3.git0.1 >>> >>> - 3.14.0-0.rc3.git2.1 >>> http://koji.fedoraproject.org/koji/buildinfo?buildID=499061 >>> >>> - 3.14.0-0.rc3.git5.1 >>> http://koji.fedoraproject.org/koji/buildinfo?buildID=499636 >>> >>> Memtest86+ 4.20 - OK >>> http://goo.gl/1nm1nV >>> >>> RHBZ >>> https://bugzilla.redhat.com/show_bug.cgi?id=1067919 >>> >>> messages-Oops-es-3.14.0-0.rc3 >>> https://bugzilla.redhat.com/attachment.cgi?id=865926 >> >> Maybe commits 7053aee26a3548ebaba046ae2e52396ccf56ac6c (fsnotify: do >> not share events between notification groups) >> and 85816794240b9659e66e4d9b0df7c6e814e5f603 (fanotify: Fix use after >> free for permission events) introduced this regression. > So the immediate problem seems to be that event->tgid is 0xffffffff > instead of a pointer. I don't see how this could be use after free and we > unconditionally initialize event->tgid to something sensible. Hum, but if > it is an overflow event, we are in a trouble since that doesn't have ->tgid > field at all so we read random crap that happens to be beyond the event > structure. Actually there seem to be more problems in the handling of > overflow event so I better add that to my testing (both for fanotify and > inotify). I'll work on the fix. Thanks for report! > > Honza > The test was successfully completed with the '3.14-rc5'. Thanks guys, Jan for the patchwork! poma ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: BUG: unable to handle kernel paging request at 0000000100000003 - Oops: 0000 [#1] SMP 2014-03-03 19:13 ` poma @ 2014-03-03 20:17 ` Jan Kara 0 siblings, 0 replies; 5+ messages in thread From: Jan Kara @ 2014-03-03 20:17 UTC (permalink / raw) To: poma Cc: Jan Kara, Richard Weinberger, Mailing-List fedora-kernel, Linux Kernel list, Josh Boyer, Justin M. Forbes, Stanislaw Gruszka, Jiri Kosina, Dave Jones, Christoph Hellwig, eparis, Al Viro, Hugh Dickins, Andrew Morton, Linus Torvalds On Mon 03-03-14 20:13:00, poma wrote: > On 21.02.2014 16:48, Jan Kara wrote: > > On Fri 21-02-14 14:08:03, Richard Weinberger wrote: > >> On Fri, Feb 21, 2014 at 12:40 PM, poma <pomidorabelisima@gmail.com> wrote: > >>> > >>> Affected kernels - 3.14.0-0.rc3*: > >>> > >>> - 3.14.0-0.rc3.git0.1 > >>> http://koji.fedoraproject.org/koji/buildinfo?buildID=498711 > >>> > >>> - 3.14.0-0.rc3.git0.7 based on 3.14.0-0.rc3.git0.1 > >>> > >>> - 3.14.0-0.rc3.git2.1 > >>> http://koji.fedoraproject.org/koji/buildinfo?buildID=499061 > >>> > >>> - 3.14.0-0.rc3.git5.1 > >>> http://koji.fedoraproject.org/koji/buildinfo?buildID=499636 > >>> > >>> Memtest86+ 4.20 - OK > >>> http://goo.gl/1nm1nV > >>> > >>> RHBZ > >>> https://bugzilla.redhat.com/show_bug.cgi?id=1067919 > >>> > >>> messages-Oops-es-3.14.0-0.rc3 > >>> https://bugzilla.redhat.com/attachment.cgi?id=865926 > >> > >> Maybe commits 7053aee26a3548ebaba046ae2e52396ccf56ac6c (fsnotify: do > >> not share events between notification groups) > >> and 85816794240b9659e66e4d9b0df7c6e814e5f603 (fanotify: Fix use after > >> free for permission events) introduced this regression. > > So the immediate problem seems to be that event->tgid is 0xffffffff > > instead of a pointer. I don't see how this could be use after free and we > > unconditionally initialize event->tgid to something sensible. Hum, but if > > it is an overflow event, we are in a trouble since that doesn't have ->tgid > > field at all so we read random crap that happens to be beyond the event > > structure. Actually there seem to be more problems in the handling of > > overflow event so I better add that to my testing (both for fanotify and > > inotify). I'll work on the fix. Thanks for report! > > > > Honza > > > > The test was successfully completed with the '3.14-rc5'. > Thanks guys, Jan for the patchwork! Thanks for testing and letting me know! Honza -- Jan Kara <jack@suse.cz> SUSE Labs, CR ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2014-03-03 20:17 UTC | newest] Thread overview: 5+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2014-02-21 11:40 BUG: unable to handle kernel paging request at 0000000100000003 - Oops: 0000 [#1] SMP poma 2014-02-21 13:08 ` Richard Weinberger 2014-02-21 15:48 ` Jan Kara 2014-03-03 19:13 ` poma 2014-03-03 20:17 ` Jan Kara
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