Author: mckusick
Date: Thu Apr 9 23:42:13 2020
New Revision: 359759
URL: https://svnweb.freebsd.org/changeset/base/359759
Log:
When running with a kernel compiled with DEBUG_LOCKS, before
panic'ing for recusing on a non-recursive lock, print out the
kernel stack where the lock was originally acquired.
Modified:
head/sys/kern/kern_lock.c
Modified: head/sys/kern/kern_lock.c
==============================================================================
--- head/sys/kern/kern_lock.c Thu Apr 9 23:22:35 2020 (r359758)
+++ head/sys/kern/kern_lock.c Thu Apr 9 23:42:13 2020 (r359759)
@@ -732,6 +732,7 @@ lockmgr_xlock_hard(struct lock *lk, u_int flags, struc
class = LOCK_CLASS(ilk);
class->lc_unlock(ilk);
}
+ STACK_PRINT(lk);
panic("%s: recursing on non recursive lockmgr %p "
"@ %s:%d\n", __func__, lk, file, line);
}
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