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Re: lib/60925: named and cmake dump core in 10.2_STABLE amd64 after pthread_atfork.c changes





On 2026-10-25 17.45, Michael van Elst via gnats wrote:
The following reply was made to PR lib/60925; it has been noted by GNATS.

From: mlelstv%serpens.de@localhost (Michael van Elst)
To: gnats-bugs%netbsd.org@localhost
Cc:
Subject: Re: lib/60925: named and cmake dump core in 10.2_STABLE amd64 after pthread_atfork.c changes
Date: Sun, 25 Oct 2026 23:44:25 -0000 (UTC)

  gnats-admin%NetBSD.org@localhost ("oster%netbsd.org@localhost via gnats") writes:
> Reverting this commit:
  >cvs rdiff -u -r1.17 -r1.17.2.1 src/lib/libc/gen/pthread_atfork.c
  >gets things working for me.  But no idea as to the underlying issue.
- return malloc(sizeof(atfork_builtin));
  +       rv = mmap(0, sizeof(atfork_builtin), PROT_READ|PROT_WRITE, MAP_PRIVATE,
  +           -1, 0);
Shouldn't that be MAP_ANON | MAP_PRIVATE ?
I tested starting /usr/sbin/named with pthread_atfork.c build with "MAP_ANON | MAP_PRIVATE" instead, and it worked fine!

Later...

Greg Oster





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