https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=244563
--- Comment #3 from Mark Johnston <ma...@freebsd.org> ---
-18446744073709551525 % (1 << 63) is ~24,000. Looking at the other mallocs, I
see shmfd is pretty close to that. sys_shm_unlink() calls free(path, M_TEMP),
which is wrong since shm_copyin_path() allocates the path buffer with M_SHMFD.
Looks like it was introduced in r354808.
diff --git a/sys/kern/uipc_shm.c b/sys/kern/uipc_shm.c
index b97e75c0e417..886a0bad8746 100644
--- a/sys/kern/uipc_shm.c
+++ b/sys/kern/uipc_shm.c
@@ -961,7 +961,7 @@ sys_shm_unlink(struct thread *td, struct shm_unlink_args
*uap)
sx_xlock(&shm_dict_lock);
error = shm_remove(path, fnv, td->td_ucred);
sx_xunlock(&shm_dict_lock);
- free(path, M_TEMP);
+ free(path, M_SHMFD);
return (error);
}
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