uvm_fault(0xfffffd807efff170, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at uvm_fault_lower+0xbb1: movq 0(%rbx),%rdi TID PID UID PRFLAGS PFLAGS CPU COMMAND *118171 40550 32767 0x10 0 1K syz-executor.1 238257 40550 32767 0x10 0x4000000 0 syz-executor.1 uvm_fault_lower(ffff80002466c150,ffff80002466c188,ffff80002466c0d0,0) at uvm_fault_lower+0xbb1 sys/uvm/uvm_fault.c:1325 uvm_fault(fffffd807efff170,20001000,0,2) at uvm_fault+0x24f sys/uvm/uvm_fault.c:640 upageflttrap(ffff80002466c2c0,20001700) at upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 usertrap(ffff80002466c2c0) at usertrap+0x214 sys/arch/amd64/amd64/trap.c:403 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7fffff2000, count: 10 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xfffffd807efff170, 0x0, 0, 1) -> e ddb{1}> trace uvm_fault_lower(ffff80002466c150,ffff80002466c188,ffff80002466c0d0,0) at uvm_fault_lower+0xbb1 sys/uvm/uvm_fault.c:1325 uvm_fault(fffffd807efff170,20001000,0,2) at uvm_fault+0x24f sys/uvm/uvm_fault.c:640 upageflttrap(ffff80002466c2c0,20001700) at upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 usertrap(ffff80002466c2c0) at usertrap+0x214 sys/arch/amd64/amd64/trap.c:403 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7fffff2000, count: -5 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002466c040 rbx 0 rdx 0 rcx 0x8 rax 0xffff80002468b270 r8 0xffffffff81a8edde witness_assert+0x1fe r9 0x5 r10 0xa0c49793a740735a r11 0x1ea3cb61daa984b7 r12 0xffff80002466c150 r13 0xfffffd806f86f7e0 r14 0 r15 0xffffffff81b25d00 uvn_flush+0x950 rip 0xffffffff817b9101 uvm_fault_lower+0xbb1 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002466bfb0 ss 0 uvm_fault_lower+0xbb1: movq 0(%rbx),%rdi ddb{1}> show proc PROC (syz-executor.1) pid=118171 stat=onproc flags process=10 proc=0 pri=36, usrpri=71, nice=20 forw=0xffffffffffffffff, list=0xffff8000fffef7a0,0xffff80002468ad40 process=0xffff8000ffff94d0 user=0xffff800024667000, vmspace=0xfffffd807efff170 estcpu=36, cpticks=2, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *40550 118171 95295 32767 7 0x10 syz-executor.1 40550 335473 95295 32767 3 0x4000090 fsleep syz-executor.1 40550 181005 95295 32767 3 0x4000090 fsleep syz-executor.1 40550 238257 95295 32767 7 0x4000010 syz-executor.1 29493 368524 32754 32767 3 0x10 biowait syz-executor.0 32754 228252 82199 0 3 0x82 wait syz-executor.0 95295 472956 70533 32767 3 0x90 nanoslp syz-executor.1 70533 427479 82199 0 3 0x82 wait syz-executor.1 28671 175186 0 0 3 0x14200 bored sosplice 82199 208148 58718 0 3 0x82 thrsleep syz-fuzzer 82199 436348 58718 0 3 0x4000082 nanoslp syz-fuzzer 82199 330140 58718 0 3 0x4000082 thrsleep syz-fuzzer 82199 51803 58718 0 3 0x4000082 thrsleep syz-fuzzer 82199 391025 58718 0 3 0x4000082 thrsleep syz-fuzzer 82199 258429 58718 0 3 0x4000082 thrsleep syz-fuzzer 82199 305546 58718 0 3 0x4000082 thrsleep syz-fuzzer 82199 103009 58718 0 3 0x4000082 kqread syz-fuzzer 58718 362758 86741 0 3 0x10008a sigsusp ksh 86741 507633 29374 0 3 0x9a kqread sshd 2499 306693 1 0 3 0x100083 ttyin getty 29374 300684 1 0 3 0x88 kqread sshd 77111 415004 48763 73 3 0x100090 kqread syslogd 48763 430952 1 0 3 0x100082 netio syslogd 16918 369478 1 0 3 0x100080 kqread resolvd 89512 240916 76067 77 3 0x100092 kqread dhcpleased 37318 511266 76067 77 3 0x100092 kqread dhcpleased 76067 368302 1 0 3 0x80 kqread dhcpleased 16222 4289 0 0 3 0x14200 bored smr 64296 275761 0 0 3 0x14200 pgzero zerothread 33220 291113 0 0 3 0x14200 aiodoned aiodoned 83433 258334 0 0 3 0x14200 syncer update 10796 247117 0 0 3 0x14200 cleaner cleaner 46082 69502 0 0 3 0x14200 reaper reaper 77319 495629 0 0 3 0x14200 pgdaemon pagedaemon 73994 443891 0 0 3 0x14200 bored viomb 75351 479779 0 0 3 0x40014200 acpi0 acpi0 26749 331243 0 0 3 0x40014200 idle1 31857 8370 0 0 3 0x14200 bored softnet 51309 138807 0 0 3 0x14200 bored systqmp 27304 224581 0 0 3 0x14200 bored systq 57296 298457 0 0 3 0x40014200 bored softclock 89936 372960 0 0 3 0x40014200 idle0 1 53033 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 40550 (syz-executor.1) thread 0xffff80002468b270 (118171) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff828b70b8) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 __mp_acquire_count+0x4c sys/kern/kern_lock.c:227 #2 mi_switch+0x3d3 sys/kern/sched_bsd.c:416 #3 sleep_finish+0x1b2 sys/kern/kern_synch.c:433 #4 rw_enter+0x35b sys/kern/kern_rwlock.c:286 #5 uvmfault_relock+0x6f sys/uvm/uvm_fault.c:1801 #6 uvm_fault_lower+0x931 sys/uvm/uvm_fault.c:1288 #7 uvm_fault+0x24f sys/uvm/uvm_fault.c:640 #8 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 #9 usertrap+0x214 sys/arch/amd64/amd64/trap.c:403 #10 recall_trap+0x8 Process 40550 (syz-executor.1) thread 0xffff80002468bcf0 (238257) exclusive rwlock amaplk r = 0 (0xfffffd8068775de0) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 uvm_fault_check+0x3d2 sys/uvm/uvm_fault.c:776 #2 uvm_fault+0x102 sys/uvm/uvm_fault.c:602 #3 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 #4 usertrap+0x214 sys/arch/amd64/amd64/trap.c:403 #5 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd807efff188) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 uvmfault_lookup+0xe9 sys/uvm/uvm_fault.c:1745 #2 uvm_fault_check+0x3a sys/uvm/uvm_fault.c:676 #3 uvm_fault+0x102 sys/uvm/uvm_fault.c:602 #4 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 #5 usertrap+0x214 sys/arch/amd64/amd64/trap.c:403 #6 recall_trap+0x8 Process 29493 (syz-executor.0) thread 0xffff8000fffef7a0 (368524) exclusive rrwlock inode r = 0 (0xfffffd806ad06a28) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 rw_enter+0x3e2 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vget+0x1eb sys/kern/vfs_subr.c:677 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1318 #8 ufs_lookup+0x145f sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x737 sys/kern/vfs_lookup.c:561 #11 namei+0x55a sys/kern/vfs_lookup.c:245 #12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1849 #13 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #13 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8069285d60) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 rw_enter+0x3e2 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vfs_lookup+0xdd sys/kern/vfs_lookup.c:413 #6 namei+0x55a sys/kern/vfs_lookup.c:245 #7 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1849 #8 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10152 6394K 6416K 78643K 11289 0 pcb 13 12K 14K 78643K 17 0 rtable 110 3K 4K 78643K 1270 0 ifaddr 39 10K 10K 78643K 147 0 sysctl 2 0K 0K 78643K 2 0 counters 44 34K 34K 78643K 74 0 ioctlops 0 0K 2K 78643K 162 0 iov 0 0K 32K 78643K 1007 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1209 76K 76K 78643K 2444 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 64 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 3485 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 7 21K 33K 78643K 8932 0 sigio 0 0K 0K 78643K 265 0 proc 56 74K 99K 78643K 1195 0 subproc 26 1K 1K 78643K 221 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 1 0K 0K 78643K 3364 0 in_multi 33 2K 2K 78643K 289 0 ether_multi 1 0K 0K 78643K 26 0 mrt 1 0K 0K 78643K 4 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 229 1023K 1023K 78643K 229 0 exec 0 0K 2K 78643K 2152 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 249 35K 48K 78643K 119372 0 UVM aobj 131 4K 4K 78643K 132 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 171 0 NDP 5 0K 0K 78643K 54 0 temp 76 4195K 4275K 78643K 23243 0 kqueue 13 20K 31K 78643K 533 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 971 0 968 12 11 1 3 0 8 0 rtentry 112 231 0 185 2 0 2 2 0 8 0 unpcb 128 5930 0 5917 60 59 1 5 0 8 0 syncache 296 66 0 66 22 21 1 1 0 8 1 tcpqe 32 70 0 70 10 10 0 1 0 8 0 tcpcb 736 3494 0 3483 123 115 8 17 0 8 5 arp 120 38 0 32 1 0 1 1 0 8 0 ipq 40 12 0 11 7 6 1 1 0 8 0 ipqe 40 120 0 119 7 6 1 1 0 8 0 inpcb 304 14393 0 14381 129 115 14 14 0 8 12 ip6q 72 39 0 39 6 6 0 1 0 8 0 ip6af 40 78 0 78 6 6 0 1 0 8 0 nd6 48 70 0 62 1 0 1 1 0 8 0 kcovpl 48 17 0 15 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1011 0 805 21 8 13 16 0 8 0 art_table 32 1012 0 805 3 1 2 3 0 8 0 art_node 16 230 0 188 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 3 1 1 0 1 0 8 0 semapl 112 3483 0 3473 1 0 1 1 0 8 0 shmpl 112 129 0 1 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 12588 0 11172 91 2 89 89 0 8 0 ffsino 272 12588 0 11172 95 0 95 95 0 8 0 nchpl 144 24222 0 22621 60 0 60 60 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 78861 0 78861 3 2 1 1 0 8 1 percpumem 16 49 0 15 1 0 1 1 0 8 0 scxspl 216 74129 0 74128 26 25 1 8 0 8 0 plimitpl 152 2017 0 2007 1 0 1 1 0 8 0 sigapl 424 9109 0 9076 4 0 4 4 0 8 0 futexpl 64 72061 0 72059 3 2 1 1 0 8 0 knotepl 112 144 0 0 3 0 3 3 0 8 0 kqueuepl 216 2533 0 2517 40 37 3 5 0 8 2 pipepl 336 1510 0 1500 58 57 1 7 0 8 0 fdescpl 496 9094 0 9076 3 0 3 3 0 8 0 filepl 152 60070 0 59966 106 95 11 14 0 8 6 lockfpl 104 1063 0 1060 2 1 1 2 0 8 0 lockfspl 48 294 0 291 1 0 1 1 0 8 0 sessionpl 144 32 0 22 1 0 1 1 0 8 0 pgrppl 48 44 0 34 1 0 1 1 0 8 0 ucredpl 96 8920 0 8908 1 0 1 1 0 8 0 zombiepl 144 9076 0 9076 1 0 1 1 0 8 1 processpl 1064 9109 0 9076 3 0 3 3 0 8 0 procpl 672 28597 0 28554 18 13 5 6 0 8 0 sosppl 168 130 0 130 24 23 1 1 0 8 1 sockpl 480 21620 0 21592 375 349 26 33 0 8 21 mcl64k 65536 41 0 0 4 1 3 3 0 8 0 mcl16k 16384 25 0 0 4 1 3 3 0 8 0 mcl12k 12288 25 0 0 2 0 2 2 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 25 0 0 3 0 3 3 0 8 0 mcl2k2 2112 17 0 0 2 0 2 2 0 8 0 mcl2k 2048 279 0 0 22 6 16 22 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 3189 0 0 187 0 187 187 0 8 0 bufpl 288 16773 0 10451 452 0 452 452 0 8 0 anonpl 24 2719161 0 2706836 268 180 88 105 0 186 5 amapchunkpl 152 293654 0 293099 97 73 24 35 0 158 1 amappl16 200 26832 0 26477 157 138 19 34 0 8 0 amappl15 192 2529 0 2524 1 0 1 1 0 8 0 amappl14 184 860 0 857 2 1 1 1 0 8 0 amappl13 176 313 0 310 1 0 1 1 0 8 0 amappl12 168 161 0 157 1 0 1 1 0 8 0 amappl11 160 2051 0 2037 1 0 1 1 0 8 0 amappl10 152 55 0 49 1 0 1 1 0 8 0 amappl9 144 1186 0 1183 1 0 1 1 0 8 0 amappl8 136 3747 0 3666 3 0 3 3 0 8 0 amappl7 128 3141 0 3131 1 0 1 1 0 8 0 amappl6 120 1060 0 1050 1 0 1 1 0 8 0 amappl5 112 8420 0 8401 1 0 1 1 0 8 0 amappl4 104 3825 0 3792 2 1 1 2 0 8 0 amappl3 96 991 0 973 1 0 1 1 0 8 0 amappl2 88 9786 0 9742 5 3 2 2 0 8 0 amappl1 80 163626 0 163188 13 3 10 12 0 8 0 amappl 88 118446 0 118282 5 0 5 5 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 131 0 1 3 0 3 3 0 8 0 uaddrrnd 24 9094 0 9076 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 9094 0 9076 1 0 1 1 0 8 0 vmmpekpl 168 67457 0 67435 2 0 2 2 0 8 0 vmmpepl 168 848806 0 847112 253 166 87 96 0 357 7 vmsppl 368 9093 0 9076 2 0 2 2 0 8 0 rwobjpl 56 220019 0 212833 119 16 103 106 0 8 0 pdppl 4096 18196 0 18152 67 21 46 50 0 8 2 pvpl 32 4550286 0 4534349 442 287 155 198 0 265 19 pmappl 248 9093 0 9076 2 0 2 2 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 1142 0 215 27 0 27 27 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff827adff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x17 kd_curproc sys/dev/kcov.c:559 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x17 sys/dev/kcov.c:143 __mp_lock(ffffffff828b6eb0) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828b6eb0) at __mp_lock+0x133 sys/kern/kern_lock.c:147 intr_handler(ffff8000246609e0,ffff80000004ad00) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge21_untramp() at Xintr_ioapic_edge21_untramp+0x18f __mp_lock(ffffffff828b6eb0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828b6eb0) at __mp_lock+0x122 sys/kern/kern_lock.c:147 uvm_fault(fffffd807efff170,e7b2813e000,0,2) at uvm_fault+0x233 sys/uvm/uvm_fault.c:639 upageflttrap(ffff800024660d50,e7b2813e848) at upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 usertrap(ffff800024660d50) at usertrap+0x214 sys/arch/amd64/amd64/trap.c:403 recall_trap() at recall_trap+0x8 end trace frame: 0x0, count: 3 ddb{0}> trace x86_ipi_db(ffffffff827adff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x17 kd_curproc sys/dev/kcov.c:559 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x17 sys/dev/kcov.c:143 __mp_lock(ffffffff828b6eb0) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828b6eb0) at __mp_lock+0x133 sys/kern/kern_lock.c:147 intr_handler(ffff8000246609e0,ffff80000004ad00) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge21_untramp() at Xintr_ioapic_edge21_untramp+0x18f __mp_lock(ffffffff828b6eb0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828b6eb0) at __mp_lock+0x122 sys/kern/kern_lock.c:147 uvm_fault(fffffd807efff170,e7b2813e000,0,2) at uvm_fault+0x233 sys/uvm/uvm_fault.c:639 upageflttrap(ffff800024660d50,e7b2813e848) at upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 usertrap(ffff800024660d50) at usertrap+0x214 sys/arch/amd64/amd64/trap.c:403 recall_trap() at recall_trap+0x8 end trace frame: 0x0, count: -12 ddb{0}> machine ddbcpu 1 Stopped at uvm_fault_lower+0xbb1: movq 0(%rbx),%rdi uvm_fault_lower(ffff80002466c150,ffff80002466c188,ffff80002466c0d0,0) at uvm_fault_lower+0xbb1 sys/uvm/uvm_fault.c:1325 uvm_fault(fffffd807efff170,20001000,0,2) at uvm_fault+0x24f sys/uvm/uvm_fault.c:640 upageflttrap(ffff80002466c2c0,20001700) at upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 usertrap(ffff80002466c2c0) at usertrap+0x214 sys/arch/amd64/amd64/trap.c:403 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7fffff2000, count: 10 ddb{1}> trace uvm_fault_lower(ffff80002466c150,ffff80002466c188,ffff80002466c0d0,0) at uvm_fault_lower+0xbb1 sys/uvm/uvm_fault.c:1325 uvm_fault(fffffd807efff170,20001000,0,2) at uvm_fault+0x24f sys/uvm/uvm_fault.c:640 upageflttrap(ffff80002466c2c0,20001700) at upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 usertrap(ffff80002466c2c0) at usertrap+0x214 sys/arch/amd64/amd64/trap.c:403 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7fffff2000, count: -5