The memory statistics code leads to segfaults during initialization (on
machines with InfiniPath networking):

  (gdb) bt full
  #0  ips_ptl_init (ep=0x1fc6af8, ptl=0x1fc6f88, ctl=0x1fc6d78) at ptl.c:224
	  err = PSM_OK
	  num_of_send_bufs = 1024
	  num_of_send_desc = 4096
	  imm_size = 128
	  context = 0x1fc6b70
	  user_info = 0x1fc6b90
	  enable_shcontexts = 0
	  current_count = <optimized out>
  #1  0x00007fb2aa672abf in __psm_ep_open_internal (
      unique_job_key=unique_job_key@entry=0x7ffed1ee5800 "<\207\020#5\271\267\200\354x\242e8\364zo", 
      devid_enabled=devid_enabled@entry=0x7ffed1ee5724, opts_i=opts_i@entry=0x7ffed1ee5810, mq=<optimized out>, 
      epo=epo@entry=0x7ffed1ee5710, epido=epido@entry=0x7ffed1ee5708) at psm_ep.c:929
	  ep = 0x1fc6af8
	  num_units = 1
	  len = <optimized out>
	  err = <optimized out>
	  epaddr = 0x1e9dd78
	  buf = "miriel044:2.0.", '\000' <repeats 113 times>
	  p = <optimized out>
	  e = <optimized out>
	  old_cpuaff = 0x0
	  old_unit = 0x0
	  yield_cnt = {e_void = 0xfa, e_str = 0xfa <error: Cannot access memory at address 0xfa>, e_int = 250, 
	    e_uint = 250, e_long = 250, e_ulong = 250, e_ulonglong = 250}
	  no_cpuaff = {e_void = 0x0, e_str = 0x0, e_int = 0, e_uint = 0, e_long = 0, e_ulong = 0, e_ulonglong = 0}
	  env_unit_id = {e_void = 0xffffffffffffffff, 
	    e_str = 0xffffffffffffffff <error: Cannot access memory at address 0xffffffffffffffff>, e_int = -1, 
	    e_uint = 4294967295, e_long = -1, e_ulong = 18446744073709551615, e_ulonglong = 18446744073709551615}
	  env_port_id = {e_void = 0x0, e_str = 0x0, e_int = 0, e_uint = 0, e_long = 0, e_ulong = 0, e_ulonglong = 0}
	  env_sl = {e_void = 0x0, e_str = 0x0, e_int = 0, e_uint = 0, e_long = 0, e_ulong = 0, e_ulonglong = 0}
	  ptl_sizes = <optimized out>
	  default_cpuaff = <optimized out>
	  opts = {timeout = 180000000000, unit = -1, affinity = 0, shm_mbytes = 10, sendbufs_num = 1024, 
	    network_pkey = 65535, port = 0, outsl = 0, service_id = 1152940698815692800, 
	    path_res_type = PSM_PATH_RES_NONE, senddesc_num = 4096, imm_size = 128}
	  amsh_ptl = 0x1fc6e48
	  ips_ptl = 0x1fc6f88
	  self_ptl = 0x1fc99c8
	  i = 3

It looks like ptl.c:24 is writing past the region that was malloc'd.

Turning stats off solves the problem.

diff --git a/psm_utils.c b/psm_utils.c
index c8651fe..5514921 100644
--- a/psm_utils.c
+++ b/psm_utils.c
@@ -1058,7 +1058,7 @@ psmi_log_memstats(psmi_memtype_t type, int64_t nbytes)
     return;
 }
 
-#define psmi_stats_mask PSMI_STATSTYPE_MEMORY
+#define psmi_stats_mask 0
 
 #ifdef malloc
 #undef malloc
and</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2023-08-13 02:00:00 +0200'>2023-08-13</span></td><td><a href='/guix/commit/gnu/packages/mc.scm?id=e4a876d45dfbdd71fff6f6ef18ea814bfcc87940'>gnu: mc: Shrink closure.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/mc.scm (mc)[arguments]: Add "--disable-configure-args"
to the #:configure-flags.
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2023-08-13 02:00:00 +0200'>2023-08-13</span></td><td><a href='/guix/commit/gnu/packages/mc.scm?id=a5f76d482f00a4d5bce2bb089ecdb0be69cea1b5'>gnu: mc: Fix cross-(mis)compilation &amp; substitutions.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/mc.scm (mc)[arguments]: Set PERL_FOR_BUILD.
Rename 'patch-FHS-file-names phase to 'patch-file-names.
Properly distinguish build-time from run-time commands.
Reorganise to catch more occurrences.
[inputs]: Add bash-minimal and perl.
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2023-08-13 02:00:00 +0200'>2023-08-13</span></td><td><a href='/guix/commit/gnu/packages/mc.scm?id=bce8235ebe1a17f55f17f3537fd789572f4ebe1a'>gnu: mc: Remove obsolete substitution.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/mc.scm (mc)[arguments]: Don't SUBSTITUTE* "/bin/cat".
It's been fixed upstream.
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2023-08-13 02:00:00 +0200'>2023-08-13</span></td><td><a href='/guix/commit/gnu/packages/mc.scm?id=6048467f0686e1fe9e9bd114e69a5290645f3243'>gnu: mc: Use G-expressions.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/mc.scm (mc)[arguments]: Rewrite as G-expressions.
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2023-08-13 02:00:00 +0200'>2023-08-13</span></td><td><a href='/guix/commit/gnu/packages/mc.scm?id=9421890fa24411b9481de5538bcd8d12b9dbcc5c'>gnu: mc: Update to 4.8.30.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/mc.scm (mc): Update to 4.8.30.
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>