VNASSERT_failed:_vp-›v_holdent_›_0_ not_true_at_/home/pkgbuild/worktrees/main/sys/kern/vfs_subr .c:3391_(vget_finish_ref)

[Somewhat hand corrected "OCR" conversion of some console image content.]

VNASSERT failed: vp->v_holdcnt > 0 not true at /home/pkgbuild/worktrees/main/sys/kern/vfs_subr.c:3391 (vget_finish_ref)
0xffffa006e11e6a50: type VDIR state VSTATE_CONSTRUCTED op 0xffff0001a2cb40f0
    usecount 1, writecount 0, refcount 1 seqc users 0 mountedhere 0
    hold count flags ()
    flags ()
    lock type ufs: SHARED (count 1)
        vp=0xffffa006e11e6a50, lowervp=0xffffa004b074adc0
panic: condition vp->v_holdcnt > 0 not met at /home/pkgbuild/worktrees/main/sys/kern/vfs_subr.c:3391 (vget_finish_ref)
cpuid = 8
time = 1743988125
KDB: stack backtrace:
db_trace_self() at db_trace_self
db_trace_self_wrapper() at db_trace_self_wrapper+0x38
vpanic() at vpanic+0x1a0
panic() at panic+0x48
vget_finish_ref() at vget_finish_ref+0x1a4
null_hashget() at null_hashget+0xe4
null_nodeget() at null_nodeget+0x34
null_lookup() at null_lookup+0x118
vfs_lookup() at vfs_lookup+0x3e0
namei() at namei+0x298
vn_open_cred() at vn_open_cred+0x450
openatfp() at openatfp+0x238
do_el0_sync() at do_el0_sync+0x608
handle_el0_sync() at handle_el0_sync+0x4c
--- exception, esr 0x56000000
KDB: enter: panic
[ thread pid 8113 tid 163110 ]
stopped at
kdb_enter+0x48: str xzr, [x19, #2048]
db> 

An issue may be that I'd not yet updated the world yet after
updating and booting the kernel (but no ipfw usage involved):

# uname -apKU
FreeBSD aarch64-main-pbase 15.0-CURRENT FreeBSD 15.0-CURRENT main-n276258-c5773d366ecc GENERIC arm64 aarch64 1500035 1500034

(That kernel is from installing an official PkgBase set of
kernels, not a personal build.)

# poudriere jail -l
JAILNAME         VERSION         OSVERSION ARCH          METHOD  TIMESTAMP           PATH
release-aarch64  14.2-RELEASE-p1           aarch64       pkgbase 2025-03-12 21:11:39 /usr/local/poudriere/jails/release-aarch64
. . .

The FreeBSD context is Apple Silicon M4 MAX under Parallels
on macOS. FreeBSD had been doing a poudriere-devel based bulk
build.


I've no known way to reproduce the panic on demand.


Core dumps under Parallels always seem to have backtraces
that are like:

#0  0xffff0000004b9e48 in doadump (textdump=0)
    at /home/pkgbuild/worktrees/main/sys/kern/kern_shutdown.c:404
#1  0x6fa60000000e9d98 in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

and the rest of the cores are like:

#0  0xffff0000008703b0 in ipi_stop (dummy=<optimized out>)
    at /home/pkgbuild/worktrees/main/sys/arm64/arm64/mp_machdep.c:342
#1  0xd2e9000000866b68 in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)


===
Mark Millard
marklmi at yahoo.com