[Bug 204949] panic: mtx_lock of spin mutex @ /usr/src/head/sys/kern/vfs_subr.c:512
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Wed Dec 2 20:05:38 UTC 2015
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=204949
Mateusz Guzik <mjg at FreeBSD.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mjg at FreeBSD.org
--- Comment #8 from Mateusz Guzik <mjg at FreeBSD.org> ---
Since the vnode change not all fields get reinitialized and chances some of
"surviving" fields should not. In particular the union used to store
v_mountdhere vnode is suspicious.
Unfortunately I'm unable to reproduce the problem.
Can you try running with the following?
diff --git a/sys/kern/vfs_subr.c b/sys/kern/vfs_subr.c
index ddab9f0..3c39c05 100644
--- a/sys/kern/vfs_subr.c
+++ b/sys/kern/vfs_subr.c
@@ -2784,6 +2784,7 @@ _vdrop(struct vnode *vp, bool locked)
#endif
vp->v_iflag = 0;
vp->v_vflag = 0;
+ bzero(&vp->v_un, sizeof(vp->v_un));
bo->bo_flag = 0;
uma_zfree(vnode_zone, vp);
}
There are few more suspicious fields, but they should not matter for your issue
('clustering stuff').
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