Re: pkg/59009: pbulk-build SIGSEGV on null pointer dereference

["Taylor R Campbell via gnats" <gnats-admin%NetBSD.org@localhost>]

The following reply was made to PR pkg/59009; it has been noted by GNATS.

From: Taylor R Campbell <riastradh%NetBSD.org@localhost>
To: gnats-bugs%NetBSD.org@localhost, netbsd-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: pkg/59009: pbulk-build SIGSEGV on null pointer dereference
Date: Tue, 23 Jun 2026 14:56:45 +0000

 Hit this again today.
 
 Program terminated with signal SIGSEGV, Segmentation fault.
 #0  0x000000007720389c in send_build_info (arg=3D0x7ada366f7400) at master.=
 c:128
 128     master.c: No such file or directory.
 (gdb) bt
 #0  0x000000007720389c in send_build_info (arg=3D0x7ada366f7400) at master.=
 c:128
 #1  0x0000000077204b57 in deferred_write_handler (fd=3D<optimized out>,=20
     arg=3D0x7ada2b083060) at event.c:134
 #2  0x0000000077204e77 in event_dispatch () at event.c:360
 #3  0x0000000077203ef5 in master_mode (
     master_port=3D0x7f7fff474522 "127.0.0.1:2002",=20
     start_script=3D0x7f7fff4744ec "/pbulk/2026Q2/pkg/libexec/pbulk/build-cl=
 ient-start") at master.c:322
 #4  0x0000000077202327 in main (argc=3D3, argv=3D0x7f7fff473f58) at pbuild.=
 c:164
 (gdb) info locals
 peer =3D 0x7ada366f7400
 (gdb) print *peer
 $1 =3D {peer_link =3D {le_next =3D 0x0, le_prev =3D 0x7740f320 <unassigned_=
 peers>},
   job =3D 0x0, fd =3D 9, tmp_buf =3D "G\000\021&", buf =3D 0x0}
 (gdb) print active_peers
  $2 =3D {lh_first =3D 0x7ada366f7400}
 (gdb) print *active_peers->lh_first
 $3 =3D {peer_link =3D {le_next =3D 0x0, le_prev =3D 0x7740f320 <unassigned_=
 peers>},
   job =3D 0x0, fd =3D 9, tmp_buf =3D "G\000\021&", buf =3D 0x0}
 (gdb) print inactive_peers
 $4 =3D {lh_first =3D 0x0}
 (gdb) print clients_started
 $5 =3D 1
 (gdb) print child_event
 $6 =3D {sig_link =3D {le_next =3D 0x0, le_prev =3D 0x7740f3c8 <all_signals>=
 },
   sig_id =3D 20, sig_received =3D 0, sig_handler =3D 0x77203be1 <child_hand=
 ler>}
 (gdb) print child_pid
 $7 =3D 28726
 
 So in this case, it looks like=20