[Bug 293382] Dead lock and kernel crash around closefp_impl

From: <bugzilla-noreply_at_freebsd.org>
Date: Thu, 16 Apr 2026 17:42:39 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=293382

Kristofer Peterson <kris@tranception.com> changed:

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--- Comment #83 from Kristofer Peterson <kris@tranception.com> ---
Created attachment 269851
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=269851&action=edit
Updated userspace utility for calling memory testing kernel module [v2]

Updated version of command line tool to invoke syscall in memory allocation
testing module. Very little has changed however it will return a non-zero exit
status if the syscall fails allowing for easier scripting.

The following script should exit with failure quite quickly on an affected
system.

NTHRDS=2
MODE=4
SIZE=$((1<<18))
ITER=512
INCR=4096
while (set -x; ./call3 $NTHRDS $MODE $SIZE $ITER $INCR); do true; done

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