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From:   Joe Korty <Joe.Korty@concurrent-rt.com>
To:     Mark Gross <markgross@kernel.org>,
        "Luis Claudio R. Goncalves" <lgoncalv@redhat.com>
CC:     LKML <linux-kernel@vger.kernel.org>,
        Linux RT users <linux-rt-users@archiver.kernel.org>,
        Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
        Thomas Gleixner <tglx@linutronix.de>,
        Steven Rostedt <rostedt@goodmis.org>
Subject: [RT BUG] Mismatched get_uid/free_uid usage in signals in some rts
 (2nd try)
Thread-Topic: [RT BUG] Mismatched get_uid/free_uid usage in signals in some
 rts (2nd try)
Thread-Index: AQHYhYCqPSRVaFiBokm36HtjI5/Zog==
Date:   Tue, 21 Jun 2022 15:16:39 +0000
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Mismatched get_uid/free_uid usage in signals in 4.9.312-rt193=0A=
=0A=
     [  First attempt using mutt did not show up on the mailing lists.=0A=
        Trying again with office365 Outlook.   Also added the 4.9-rt=0A=
        maintainers. ]=0A=
=0A=
The 4.19-rt patch,=0A=
=0A=
   0329-signal-Prevent-double-free-of-user-struct.patch=0A=
=0A=
needs to be ported to LAG 4.9-rt, as that release now has the Linus commit,=
=0A=
=0A=
   fda31c50292a ("signal: avoid double atomic counter increments for user a=
ccounting")=0A=
=0A=
which breaks the longstanding rt patch,=0A=
=0A=
   0259-signals-Allow-rt-tasks-to-cache-one-sigqueue-struct.patch=0A=
=0A=
Current application status:=0A=
=0A=
   4.4.302-rt232        OK      has both Linus's patch and the fix needed f=
or rt.=0A=
   4.9.312-rt193        BROKE   has Linus's patch but not the fix.=0A=
   4.14.87-rt50         OK      does NOT have either Linus's patch nor its =
rt fix.=0A=
   4.19.246-rt110       OK      has both Linus's patch and the fix needed f=
or rt.=0A=
   5.4.193-rt74         OK	has both Linus's patch and the fix needed for rt=
.=0A=
   5.10.120-rt70        OK	has both Linus's patch and the fix needed for rt=
.=0A=
   5.15.44-rt46         UNKNOWN no get_uid/free_uid usage in kernel/signal.=
c anymore.=0A=
=0A=
Regards,=0A=
Joe=0A=