Re: port-mips/52892: Tests hang on MIPS

[Kamil Rytarowski <n54%gmx.com@localhost>]

The following reply was made to PR port-mips/52892; it has been noted by GNATS.

From: Kamil Rytarowski <n54%gmx.com@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: port-mips/52892: Tests hang on MIPS
Date: Thu, 19 Apr 2018 15:43:09 +0200

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 From: Kamil Rytarowski <n54%gmx.com@localhost>
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 Subject: Re: port-mips/52892: Tests hang on MIPS
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  <20180103154542.EFF759892B5%guava.gson.org@localhost>
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 On 19.04.2018 14:50, Christos Zoulas wrote:
 > The following reply was made to PR port-mips/52892; it has been noted b=
 y GNATS.
 >=20
 > From: christos%zoulas.com@localhost (Christos Zoulas)
 > To: Andreas Gustafsson <gson%gson.org@localhost>, gnats-bugs%NetBSD.org@localhost
 > Cc:=20
 > Subject: Re: port-mips/52892: Tests hang on MIPS
 > Date: Thu, 19 Apr 2018 08:44:46 -0400
 >=20
 >  On Apr 19,  3:40pm, gson%gson.org@localhost (Andreas Gustafsson) wrote:
 
 >  | 4. By bisection, I found that the hpcmips tests started hanging on b=
 5
 >  | at the time of the commit
 >  |=20
 >  |   2017.12.02.22.51.22 christos src/sys/kern/kern_lwp.c 1.191
 >  |=20
 >  | Since this caused the tests to hang earlier in the test run, in the
 >  | lib/libc/sys/t_ptrace_wait3:resume1 test rather than in the network
 >  | related tests where it is now hanging, it was not immediately clear
 >  | whether that commit also triggered the present issue.  However...
 >  |=20
 >  | 5. If I revert that commit, the tests do run to completion on b5.
 > =20
 >  That's strange, because the change was put there to prevent a hang (in=
  go).
 >  I.e. sleep interruptively instead of sleep with signals blocked.
 >  There must be some other race that's causing it. Can you try to always=
 
 >  set errno to EAGAIN after cv_wait_sig() returns?
 > =20
 >  christos
 > =20
 >=20
 
 Regarding resume1 - please disable it. It's already done this way on
 -current and -8.
 
 I plan to work on threads once I will be done with forks/vforks and signa=
 ls.
 
 
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