[Bug 297233] nfs: panic: general protection fault

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D297233

--- Comment #9 from Hans Rosenfeld <[email protected]> ---
With 71ac1ec5c9 reverted, it happened again with a different stack:


Memory modified after free 0xfffff801066bf900 (384, malloc-384,
0xffffffff81aaefa0) + 72 =3D deadc0dedeadc0dd
panic: Memory modified after free 0xfffff801066bf900 (384, malloc-384, NFSCL
deleg) + 72 =3D deadc0dedeadc0dd

cpuid =3D 5
time =3D 1785776804
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x36/frame 0xfffffe0197a33=
f90
vpanic() at vpanic+0x149/frame 0xfffffe0197a340c0
panic() at panic+0x43/frame 0xfffffe0197a34120
mtrash_ctor() at mtrash_ctor+0x147/frame 0xfffffe0197a34160
item_ctor() at item_ctor+0x12c/frame 0xfffffe0197a341b0
malloc() at malloc+0x8f/frame 0xfffffe0197a34200
nfsrpc_openrpc() at nfsrpc_openrpc+0x4db/frame 0xfffffe0197a344b0
nfsrpc_openrpc() at nfsrpc_openrpc+0x979/frame 0xfffffe0197a347c0
nfsrpc_open() at nfsrpc_open+0x29c/frame 0xfffffe0197a348d0
nfs_open() at nfs_open+0x75/frame 0xfffffe0197a349e0
vop_sigdefer() at vop_sigdefer+0x30/frame 0xfffffe0197a34a10
VOP_OPEN_APV() at VOP_OPEN_APV+0x52/frame 0xfffffe0197a34a40
vn_open_vnode() at vn_open_vnode+0x1ae/frame 0xfffffe0197a34ac0
vn_open_cred() at vn_open_cred+0x6e3/frame 0xfffffe0197a34c50
openatfp() at openatfp+0x2ed/frame 0xfffffe0197a34dc0
sys_openat() at sys_openat+0x3d/frame 0xfffffe0197a34df0
amd64_syscall() at amd64_syscall+0x17c/frame 0xfffffe0197a34f30
fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe0197a34f30
--- syscall (499, FreeBSD ELF64, openat), rip =3D 0x61f6ac7f42a, rsp =3D
0x61f55c92c48, rbp =3D 0x61f55c92c80 ---

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