Re: bin/56471: ntpd dies at startup on macppc/current, sshd randomly dies

[Jason Thorpe <thorpej%me.com@localhost>]

The following reply was made to PR bin/56471; it has been noted by GNATS.

From: Jason Thorpe <thorpej%me.com@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: gnats-admin%netbsd.org@localhost,
 netbsd-bugs%netbsd.org@localhost,
 "martin%netbsd.org@localhost" <martin%NetBSD.org@localhost>
Subject: Re: bin/56471: ntpd dies at startup on macppc/current, sshd randomly
 dies
Date: Fri, 29 Oct 2021 07:48:35 -0700

 This was probably caused by Christos=E2=80=99s change that unified =
 __libc_sigaction14() with the added #define __LIBC12_SOURCE__.  Because =
 =E2=80=9Csigcontext=E2=80=9D signal handlers have been broken for so =
 long (since 2006), re-enabling them has turned up bugs (no one has been =
 using the old __sigreturn14 system call for a long time).
 
 > On Oct 29, 2021, at 2:10 AM, Martin Husemann <martin%duskware.de@localhost> =
 wrote:
 >=20
 > The following reply was made to PR bin/56471; it has been noted by =
 GNATS.
 >=20
 > From: Martin Husemann <martin%duskware.de@localhost>
 > To: gnats-bugs%netbsd.org@localhost
 > Cc: gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost
 > Subject: Re: bin/56471: ntpd dies at startup on macppc/current, sshd =
 randomly
 > dies
 > Date: Fri, 29 Oct 2021 11:05:24 +0200
 >=20
 > Running ntpd with -D 255 shows:
 >=20
 > [..]
 > setting SO_REUSEADDR on gem0@fe80::203:93ff:fe71:ffcc%2 to off
 > setting SO_REUSEADDR on gem0@192.168.111.68 to off
 > setting SO_REUSEADDR on lo0@127.0.0.1 to off
 > setting SO_REUSEADDR on lo0@::1 to off
 > setting SO_REUSEADDR on lo0@fe80::1%3 to off
 > create_sockets: Total interfaces =3D 7
 > 29 Oct 10:57:56 ntpd[1447]: Listening on routing socket on fd #27 for =
 interface updates
 > io_open_sockets: maxactivefd 27
 > forked worker child (pid 1214)
 > parent closed request pipe, child 1214 terminating
 >=20
 >=20
 > Running ktrace -i on it again (without the debug settings) shows this
 > as last sequence of calls from the child:
 >=20
 >   1213   1213 ntpd     CALL  compat_16___sigreturn14(0xffffe000)
 >   1213   1213 ntpd     RET   compat_16___sigreturn14 -1 errno 22 =
 Invalid argument
 >   1213   1213 ntpd     CALL  exit(0x16)
 >=20
 > ... and this kernel does not have COMPAT_16 enabled.
 >=20
 > Just to make sure: this is from a clean build of today's -current. No =
 old code
 > involved.
 >=20
 > Martin
 >=20
 
 -- thorpej