diff options
| -rw-r--r-- | sys/kern/vfs_subr.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/sys/kern/vfs_subr.c b/sys/kern/vfs_subr.c index 1be3698..e483b43 100644 --- a/sys/kern/vfs_subr.c +++ b/sys/kern/vfs_subr.c @@ -3777,13 +3777,27 @@ extattr_check_cred(struct vnode *vp, int attrnamespace, #define IGNORE_LOCK(vp) ((vp)->v_type == VCHR || (vp)->v_type == VBAD) int vfs_badlock_ddb = 1; /* Drop into debugger on violation. */ +SYSCTL_INT(_debug, OID_AUTO, vfs_badlock_ddb, CTLFLAG_RW, &vfs_badlock_ddb, 0, ""); + int vfs_badlock_mutex = 1; /* Check for interlock across VOPs. */ +SYSCTL_INT(_debug, OID_AUTO, vfs_badlock_mutex, CTLFLAG_RW, &vfs_badlock_mutex, 0, ""); + int vfs_badlock_print = 1; /* Print lock violations. */ +SYSCTL_INT(_debug, OID_AUTO, vfs_badlock_print, CTLFLAG_RW, &vfs_badlock_print, 0, ""); + +#ifdef KDB +int vfs_badlock_backtrace = 1; /* Print backtrace at lock violations. */ +SYSCTL_INT(_debug, OID_AUTO, vfs_badlock_backtrace, CTLFLAG_RW, &vfs_badlock_backtrace, 0, ""); +#endif static void vfs_badlock(const char *msg, const char *str, struct vnode *vp) { +#ifdef KDB + if (vfs_badlock_backtrace) + kdb_backtrace(); +#endif if (vfs_badlock_print) printf("%s: %p %s\n", str, (void *)vp, msg); if (vfs_badlock_ddb) |
