[Bug 297233] nfs: panic: general protection fault

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

--- Comment #2 from Hans Rosenfeld <[email protected]> ---
I disabled nfscbd and rebooted, then tried again. The results look a bit
similar to bug #296224:

Memory modified after free 0xfffff80b37ec8180 (384, malloc-384,
0xffffffff81aaef30) + 72 =3D deadc0dedeadc0dd
panic: Memory modified after free 0xfffff80b37ec8180 (384, malloc-384, NFSCL
deleg) + 72 =3D deadc0dedeadc0dd

cpuid =3D 2
time =3D 1785750276
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x36/frame 0xfffffe01f7668=
f90
vpanic() at vpanic+0x149/frame 0xfffffe01f76690c0
panic() at panic+0x43/frame 0xfffffe01f7669120
mtrash_ctor() at mtrash_ctor+0x147/frame 0xfffffe01f7669160
item_ctor() at item_ctor+0x12c/frame 0xfffffe01f76691b0
malloc() at malloc+0x8f/frame 0xfffffe01f7669200
nfsrpc_openrpc() at nfsrpc_openrpc+0x4db/frame 0xfffffe01f76694b0
nfsrpc_openrpc() at nfsrpc_openrpc+0x979/frame 0xfffffe01f76697c0
nfsrpc_open() at nfsrpc_open+0x29c/frame 0xfffffe01f76698d0
nfs_open() at nfs_open+0x75/frame 0xfffffe01f76699e0
vop_sigdefer() at vop_sigdefer+0x30/frame 0xfffffe01f7669a10
VOP_OPEN_APV() at VOP_OPEN_APV+0x52/frame 0xfffffe01f7669a40
vn_open_vnode() at vn_open_vnode+0x1ae/frame 0xfffffe01f7669ac0
vn_open_cred() at vn_open_cred+0x6e3/frame 0xfffffe01f7669c50
openatfp() at openatfp+0x2ed/frame 0xfffffe01f7669dc0
sys_openat() at sys_openat+0x3d/frame 0xfffffe01f7669df0
amd64_syscall() at amd64_syscall+0x17c/frame 0xfffffe01f7669f30
fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe01f7669f30
--- syscall (499, FreeBSD ELF64, openat), rip =3D 0x1e268cc9a42a, rsp =3D
0x1e268006ea98, rbp =3D 0x1e268006ead0 ---

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