This happened on my 6.1/amd64 NFS server: uvm_fault(0xfffffe8419d06490, 0x0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff803fa3d1 cs 8 rflags 10246 cr2 c8 cpl 0 rsp ff fe811db1e660 kernel: page fault trap, code=0 stopped in pid 430.2 (nfsd) at netbsd:ufs_fhtovp+0x2e: cmpw $0,c8(%rdx)
uvs_fhtovp() at netbsd:uvs_fhtovp+0x2e ffs_fhtovp() at netbsd:ffs_fhtovp+0x55 VFS_FHTOVP() at netbsd:VFS_FHTOVP+0x1c nfsrvc_fhtovp() at netbsd:nfsrv_fhtovv+0x9a nfsrvc_write() at netbsd:nfsrvc_write+0x502 nfssvc_nfsd at netbsd:nfssvc_nfsd+0x1d7 sys_nfssvc() at netbsd:sys_nfssvc+0x22c syscall() at netbsd:syscall+0xc4 ds 30 es 1cf8 fs 2790 gs 5000 rdi fffffe82f87a43f8 rsi 1 rbp fffffe811db1e680 rbx fffffe811db1e690 rdx 0 rcx fffffe8419f4e024 rax 0 r8 fffffe8419f4e020 r9 0 r10 0 r11 1 r12 fffffe811db1e958 r13 fffffe8088290e00 r14 1 r15 fffffe80d1f306c0 rip ffffffff803fa3d1 ufs_fhtovp+0x2e cs 8 rflags 10246 rsp fffffe811db1e660 ss 10 netbsd:ufs_fhtovp+0x2e: cmpw $0,c8(%rdx) It then hung on the ddb reboot. I pressed Ctrl-Alt-ESC and tried reboot 0x4, which hung. I had to press the reset button.
