uvm_fault(fffffd806b43a528,42b9a54e000,0,4) at uvm_fault+0x255 sys/uvm/uvm_fault.c:637
upageflttrap(ffff8000353739b0,42b9a54e260) at upageflttrap+0x8e sys/arch/amd64/amd64/trap.c:188
usertrap(ffff8000353739b0) at usertrap+0x22a sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7a95bff630f0, count: -20
ddb{0}> machine ddbcpu 1
Stopped at      db_enter+0x1c:  addq    $0x8,%rsp
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8289573e) at panic+0x17b sys/kern/subr_prf.c:198
vop_generic_badop(ffff8000373c36a8) at vop_generic_badop+0x1f sys/kern/vfs_default.c:133
VOP_STRATEGY(fffffd8067df1de0,fffffd805d09ab30) at VOP_STRATEGY+0x9f sys/kern/vfs_vops.c:628
bwrite(fffffd805d09ab30) at bwrite+0x1d3 sys/kern/vfs_bio.c:757
VOP_BWRITE(fffffd805d09ab30) at VOP_BWRITE+0x4e sys/kern/vfs_vops.c:640
ufs_mkdir(ffff8000373c3920) at ufs_mkdir+0x445 sys/ufs/ufs/ufs_vnops.c:1165
VOP_MKDIR(fffffd806620e2a0,ffff8000373c3a80,ffff8000373c3ab0,ffff8000373c39b0) at VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388
domkdirat(ffff80002a1fea60,ffffff9c,7021ee5d2df0,1ff) at domkdirat+0x125 sys/kern/vfs_syscalls.c:3077
syscall(ffff8000373c3c30) at syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline]
syscall(ffff8000373c3c30) at syscall+0x854 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7021ee5d2e60, count: 4
ddb{1}> trace
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8289573e) at panic+0x17b sys/kern/subr_prf.c:198
vop_generic_badop(ffff8000373c36a8) at vop_generic_badop+0x1f sys/kern/vfs_default.c:133
VOP_STRATEGY(fffffd8067df1de0,fffffd805d09ab30) at VOP_STRATEGY+0x9f sys/kern/vfs_vops.c:628
bwrite(fffffd805d09ab30) at bwrite+0x1d3 sys/kern/vfs_bio.c:757
VOP_BWRITE(fffffd805d09ab30) at VOP_BWRITE+0x4e sys/kern/vfs_vops.c:640
ufs_mkdir(ffff8000373c3920) at ufs_mkdir+0x445 sys/ufs/ufs/ufs_vnops.c:1165
VOP_MKDIR(fffffd806620e2a0,ffff8000373c3a80,ffff8000373c3ab0,ffff8000373c39b0) at VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388
domkdirat(ffff80002a1fea60,ffffff9c,7021ee5d2df0,1ff) at domkdirat+0x125 sys/kern/vfs_syscalls.c:3077
syscall(ffff8000373c3c30) at syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline]
syscall(ffff8000373c3c30) at syscall+0x854 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7021ee5d2e60, count: -11