Re: panic: fsync: vnode is not exclusive locked but should be

[Alexander Leidinger]

Am 2025-08-04 22:14, schrieb Konstantin Belousov:

On Mon, Aug 04, 2025 at 08:50:45PM +0200, Alexander Leidinger wrote:

Hi,

I have a crash with todays -current:
---snip---
[435] VNASSERT failed: locked not true at
/space/system/usr_src/sys/kern/vfs_subr.c:5795 (assert_vop_elocked)
[435] 0xfffff806746f2000: type VREG state VSTATE_CONSTRUCTED op
0xffffffff835474f8
[435]     usecount 1, writecount 1, refcount 1 seqc users 0
[435]     hold count flags ()
[435]     flags ()

[435]     lock type zfs: SHARED (count 1)
[435]   vp=0xfffff806746f2000, lowervp=0xfffff806749bd370
[435] panic: fsync: vnode is not exclusive locked but should be

[435] v_object 0xfffff80bd3abf0f8 ref 0 pages 0 cleanbuf 0 dirtybuf 0

This is nullfs over zfs.  Try https://reviews.freebsd.org/D51730.
It should fix the issue, but I did not tested.

I confirm, no panic anymore.

Bye,
Alexander.

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