panic: uvm_fault_unwire_locked: address not in map Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *421210 43116 0 0 0x4000000 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833d9fa8) at panic+0x1cf sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd8072953cb0,400000000000,400000011000) at uvm_fault_unwire_locked+0x48d sys/uvm/uvm_fault.c:1739 uvm_fault_unwire(fffffd8072953cb0,400000000000,400000011000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1702 kern_sysctl_dirs(49,ffff80003c996f28,4,400000000100,ffff80003c996f58,0,6ca32f2094dbd981,4) at kern_sysctl_dirs+0x5d1 kern_sysctl(ffff80003c996f24,5,400000000100,ffff80003c996f58,0,37,5780909ddef6396b) at kern_sysctl+0x12d sys/kern/kern_sysctl.c:526 sys_sysctl(ffff80002f112fa0,ffff80003c997090,ffff80003c996fe0) at sys_sysctl+0x425 syscall(ffff80003c997090) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2cef3194690, count: 6 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> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic *cpu0: uvm_fault_unwire_locked: address not in map ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833d9fa8) at panic+0x1cf sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd8072953cb0,400000000000,400000011000) at uvm_fault_unwire_locked+0x48d sys/uvm/uvm_fault.c:1739 uvm_fault_unwire(fffffd8072953cb0,400000000000,400000011000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1702 kern_sysctl_dirs(49,ffff80003c996f28,4,400000000100,ffff80003c996f58,0,6ca32f2094dbd981,4) at kern_sysctl_dirs+0x5d1 kern_sysctl(ffff80003c996f24,5,400000000100,ffff80003c996f58,0,37,5780909ddef6396b) at kern_sysctl+0x12d sys/kern/kern_sysctl.c:526 sys_sysctl(ffff80002f112fa0,ffff80003c997090,ffff80003c996fe0) at sys_sysctl+0x425 syscall(ffff80003c997090) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2cef3194690, count: -9 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80003c996b30 rbx 0 rdx 0 rcx 0 rax 0xffff80002f112fa0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x7cbf282eab3266e4 r11 0x50265849a3d31379 r12 0 r13 0x7f7fffffc000 r14 0 r15 0x1 rip 0xffffffff8246fc85 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c996b20 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb> show proc PROC (syz-executor) tid=421210 pid=43116 tcnt=4 stat=onproc flags process=0 proc=4000000 runpri=36, usrpri=81, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002f112a80,0xffff80002a7f2a70 process=0xffff8000ffff2b90 user=0xffff80003c992000, vmspace=0xfffffd8072953cb0 estcpu=31, cpticks=0, pctcpu=0.1, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 78223 207066 10946 0 2 0 syz-executor 2873 64022 68499 0 2 0 syz-executor 2873 166279 68499 0 3 0x4000080 fsleep syz-executor 49222 428336 55727 0 2 0 syz-executor 49222 347331 55727 0 3 0x4000080 fsleep syz-executor 73824 442472 64040 0 2 0 syz-executor 73824 314473 64040 0 3 0x4000080 fsleep syz-executor 73824 140020 64040 0 2 0x4000000 syz-executor 84634 366537 60482 0 2 0 syz-executor 84634 383062 60482 0 2 0x4000000 syz-executor 84634 315154 60482 0 2 0x4000000 syz-executor 84634 119361 60482 0 2 0x4000000 syz-executor 33051 24907 72933 0 2 0 syz-executor 33051 5513 72933 0 3 0x4000080 fsleep syz-executor 33051 279567 72933 0 3 0x4000080 fsleep syz-executor 48686 413727 34165 0 2 0 syz-executor 48686 429249 34165 0 3 0x4000080 fsleep syz-executor 48686 137588 34165 0 3 0x4000080 fsleep syz-executor 48686 52899 34165 0 3 0x4000080 fsleep syz-executor 43116 394094 69535 0 3 0 futex syz-executor 43116 515295 69535 0 2 0x4000000 syz-executor *43116 421210 69535 0 7 0x4000000 syz-executor 43116 449801 69535 0 2 0x4000000 syz-executor 69535 249317 24129 0 3 0x82 nanoslp syz-executor 21422 273749 0 0 3 0x14200 acct acct 56777 402513 0 0 3 0x14280 nfsidl nfsio 72237 203356 0 0 3 0x14280 nfsidl nfsio 57075 156376 0 0 3 0x14280 nfsidl nfsio 87952 1737 0 0 3 0x14280 nfsidl nfsio 13008 155595 0 0 3 0x14280 nfsidl nfsio 87941 207122 0 0 3 0x14280 nfsidl nfsio 39085 448371 0 0 3 0x14280 nfsidl nfsio 79507 290243 0 0 3 0x14280 nfsidl nfsio 49580 185970 0 0 3 0x14280 nfsidl nfsio 75517 517447 0 0 3 0x14280 nfsidl nfsio 45726 390556 0 0 3 0x14280 nfsidl nfsio 69614 465556 0 0 3 0x14280 nfsidl nfsio 75986 119348 0 0 3 0x14280 nfsidl nfsio 30909 217880 0 0 3 0x14280 nfsidl nfsio 48701 99053 0 0 3 0x14280 nfsidl nfsio 77293 420090 0 0 3 0x14280 nfsidl nfsio 65789 328017 0 0 3 0x14280 nfsidl nfsio 75126 88759 0 0 3 0x14280 nfsidl nfsio 91073 161179 0 0 3 0x14280 nfsidl nfsio 24862 431760 0 0 3 0x14280 nfsidl nfsio 68499 194335 24129 0 3 0x82 nanoslp syz-executor 26822 184462 1 0 3 0x100083 ttyin getty 81697 452718 0 0 3 0x14200 bored sosplice 72933 117538 24129 0 3 0x82 nanoslp syz-executor 34165 132092 24129 0 3 0x82 nanoslp syz-executor 55727 120998 24129 0 3 0x82 nanoslp syz-executor 10946 330720 24129 0 3 0x82 nanoslp syz-executor 60482 317858 24129 0 3 0x82 nanoslp syz-executor 64040 399102 24129 0 3 0x82 nanoslp syz-executor 24129 124130 12197 0 3 0x82 kqread syz-executor 12197 448048 18305 0 3 0x10008a sigsusp ksh 18305 338568 91926 0 3 0x98 kqread sshd-session 91926 216975 62232 0 3 0x92 kqread sshd-session 62232 18389 1 0 3 0x88 kqread sshd 10366 90485 52787 73 3 0x1100090 kqread syslogd 52787 514128 1 0 3 0x100082 sbwait syslogd 34956 200202 1 0 3 0x100080 kqread resolvd 77493 334471 21687 77 3 0x100092 kqread dhcpleased 17896 222205 21687 77 3 0x100092 kqread dhcpleased 21687 236387 1 0 3 0x80 kqread dhcpleased 64632 152622 0 0 3 0x14200 bored smr 55542 164184 0 0 2 0x14200 zerothread 25683 55148 0 0 3 0x14200 aiodoned aiodoned 29127 429271 0 0 3 0x14200 syncer update 39224 449054 0 0 3 0x14200 cleaner cleaner 80517 294106 0 0 3 0x14200 reaper reaper 78378 492153 0 0 3 0x14200 pgdaemon pagedaemon 97961 431790 0 0 3 0x14200 bored viomb 93208 243021 0 0 3 0x40014200 acpi0 acpi0 37333 283526 0 0 3 0x14200 bored softnet3 51707 120867 0 0 3 0x14200 bored softnet2 86284 197560 0 0 3 0x14200 bored softnet1 61502 316002 0 0 3 0x14200 bored softnet0 11496 8997 0 0 3 0x14200 bored systqmp 98997 449200 0 0 3 0x14200 bored systq 19913 383475 0 0 3 0x40014200 tmoslp softclock 6088 48847 0 0 3 0x40014200 idle0 1 329242 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10211 11065K 12163K 166960K 13513 0 pcb 17 15K 16K 166960K 226 0 rtable 177 8K 9K 166960K 652 0 pf 31 13K 14K 166960K 120 0 ifaddr 32 5K 7K 166960K 99 0 ifgroup 48 2K 2K 166960K 169 0 sysctl 3 1K 1K 166960K 7 0 counters 30 17K 17K 166960K 76 0 ioctlops 0 0K 4K 166960K 258 0 iov 0 0K 16K 166960K 78 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1510 95K 96K 166960K 2843 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 5K 166960K 26 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 34 0 dirhash 12 2K 3K 166960K 45 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 97K 166960K 1568 0 sigio 0 0K 0K 166960K 68 0 proc 60 59K 124K 166960K 671 0 subproc 72 4K 4K 166960K 90 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 158 0 in_multi 58 4K 7K 166960K 172 0 ether_multi 1 0K 0K 166960K 4 0 mrt 0 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 241 1076K 1076K 166960K 241 0 exec 0 0K 1K 166960K 757 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 231 73K 87K 166960K 16425 0 UVM aobj 20 2K 4K 166960K 22 0 pinsyscall 39 78K 96K 166960K 2660 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 98 0 NDP 11 0K 1K 166960K 63 0 temp 76 8684K 8810K 166960K 59697 0 kqueue 14 22K 30K 166960K 273 0 SYN cache 2 16K 16K 166960K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 278 0 274 5 2 3 3 0 8 2 rtentry 128 205 0 131 4 0 4 4 0 8 0 unpcb 144 1433 0 1350 10 4 6 6 0 8 2 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 808 522 0 484 22 14 8 8 0 8 4 arp 88 31 0 16 1 0 1 1 0 8 0 ipq 40 2 0 2 1 0 1 1 0 8 1 ipqe 40 5 0 5 1 0 1 1 0 8 1 inpcb 344 1646 0 1600 25 15 10 10 0 8 5 nd6 104 40 0 28 1 0 1 1 0 8 0 pkpcb 40 11 0 11 2 1 1 1 0 8 1 kcovpl 48 10 0 2 1 0 1 1 0 8 0 mppekey 1024 5 0 5 2 1 1 1 0 8 1 ppxss 1072 28 0 27 3 2 1 1 0 8 0 pppxif 1384 10 0 10 2 1 1 1 0 8 1 pftag 88 1 0 0 1 0 1 1 0 8 0 pfqueue 320 1 0 1 1 1 0 1 0 8 0 pfrule 1344 4 0 4 2 1 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 651 0 354 29 0 29 29 0 8 5 art_table 32 654 0 354 4 0 4 4 0 8 0 art_node 16 176 0 112 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 5 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 31 0 21 1 0 1 1 0 8 0 shmpl 112 19 0 2 1 0 1 1 0 8 0 dirhash 1024 39 0 22 3 0 3 3 0 8 0 dino2pl 256 4337 0 2848 95 0 95 95 0 8 0 ffsino 248 4337 0 2848 95 0 95 95 0 8 0 nchpl 144 6530 0 4847 63 0 63 63 0 8 0 rtmask 32 4 0 4 2 2 0 1 0 8 0 uvmvnodes 80 5264 0 0 108 0 108 108 0 8 0 vnodes 216 5264 0 0 293 0 293 293 0 8 0 namei 1024 23029 0 23028 2 1 1 2 0 8 0 kstatmem 264 86 0 64 2 0 2 2 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 9 0 9 3 2 1 1 0 8 1 scxspl 216 20306 0 20306 12 9 3 8 1 8 3 plimitpl 152 439 0 422 1 0 1 1 0 8 0 sigapl 424 1871 0 1803 9 1 8 8 0 8 0 futexpl 64 20413 0 20404 1 0 1 1 0 8 0 knotepl 120 341162 0 341111 37 27 10 17 0 8 8 kqueuepl 184 584 0 572 5 1 4 4 0 8 3 pipepl 296 258 0 231 5 0 5 5 0 8 2 fdescpl 440 1830 0 1800 5 1 4 5 0 8 0 filepl 120 12738 0 12414 21 9 12 14 0 8 2 lockfpl 104 478 0 474 1 0 1 1 0 8 0 lockfspl 48 196 0 192 1 0 1 1 0 8 0 sessionpl 144 25 0 17 1 0 1 1 0 8 0 pgrppl 48 110 0 94 1 0 1 1 0 8 0 ucredpl 104 2717 0 2704 1 0 1 1 0 8 0 zombiepl 144 2516 0 2516 2 1 1 1 0 8 1 processpl 1112 1871 0 1803 5 0 5 5 0 8 0 procpl 656 4334 0 4251 10 1 9 9 0 8 1 sosppl 168 5 0 5 2 1 1 1 0 8 1 sockpl 528 3388 0 3256 27 17 10 14 0 8 1 mcl64k 65536 105 0 105 3 2 1 1 0 8 1 mcl16k 16384 18 0 18 2 1 1 1 0 8 1 mcl12k 12288 4 0 4 1 0 1 1 0 8 1 mcl9k 9216 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 37 0 37 3 2 1 1 0 8 1 mcl4k 4096 4531 0 4480 15 7 8 14 0 8 1 mcl2k2 2112 2 0 2 1 0 1 1 0 8 1 mcl2k 2048 1570 0 1570 3 1 2 2 0 8 2 mtagpl 96 84 0 25 2 0 2 2 0 8 0 mbufpl 256 22171 0 21984 89 69 20 77 0 8 4 bufpl 280 6749 0 521 446 0 446 446 0 8 0 anonpl 24 254768 0 246419 76 0 76 76 0 187 2 amapchunkpl 152 55099 0 54501 40 6 34 34 0 158 11 amappl16 200 5144 0 4877 29 2 27 27 0 8 1 amappl15 192 3 0 3 1 1 0 1 0 8 0 amappl14 184 107 0 97 1 0 1 1 0 8 0 amappl13 176 67 0 67 2 1 1 1 0 8 1 amappl12 168 2474 0 2445 2 0 2 2 0 8 0 amappl11 160 57 0 47 1 0 1 1 0 8 0 amappl10 152 3 0 3 2 1 1 1 0 8 1 amappl9 144 254 0 253 2 1 1 1 0 8 0 amappl8 136 19 0 17 1 0 1 1 0 8 0 amappl7 128 104 0 93 1 0 1 1 0 8 0 amappl6 120 198 0 195 1 0 1 1 0 8 0 amappl5 112 120 0 113 1 0 1 1 0 8 0 amappl4 104 299 0 283 1 0 1 1 0 8 0 amappl3 96 11001 0 10886 5 1 4 4 0 8 0 amappl2 88 652 0 594 2 0 2 2 0 8 0 amappl1 80 11943 0 11427 14 2 12 13 0 8 0 amappl 88 15960 0 15777 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 128 257 0 257 2 1 1 1 0 8 1 dma64 64 7 0 7 2 1 1 1 0 8 1 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 21 0 2 1 0 1 1 0 8 0 uaddrrnd 24 1830 0 1800 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1830 0 1800 1 0 1 1 0 8 0 vmmpekpl 168 15527 0 15477 3 0 3 3 0 8 0 vmmpepl 168 116453 0 114410 105 5 100 100 0 357 5 vmsppl 360 1829 0 1800 4 1 3 4 0 8 0 rwobjpl 32 36108 0 29720 53 0 53 53 0 8 0 pdppl 4096 3667 0 3600 123 56 67 83 0 8 0 pvpl 32 783016 0 769110 163 11 152 152 0 265 14 pmappl 216 1829 0 1800 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 398 0 157 9 0 9 9 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833d9fa8) at panic+0x1cf sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd8072953cb0,400000000000,400000011000) at uvm_fault_unwire_locked+0x48d sys/uvm/uvm_fault.c:1739 uvm_fault_unwire(fffffd8072953cb0,400000000000,400000011000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1702 kern_sysctl_dirs(49,ffff80003c996f28,4,400000000100,ffff80003c996f58,0,6ca32f2094dbd981,4) at kern_sysctl_dirs+0x5d1 kern_sysctl(ffff80003c996f24,5,400000000100,ffff80003c996f58,0,37,5780909ddef6396b) at kern_sysctl+0x12d sys/kern/kern_sysctl.c:526 sys_sysctl(ffff80002f112fa0,ffff80003c997090,ffff80003c996fe0) at sys_sysctl+0x425 syscall(ffff80003c997090) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2cef3194690, count: -9 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833d9fa8) at panic+0x1cf sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd8072953cb0,400000000000,400000011000) at uvm_fault_unwire_locked+0x48d sys/uvm/uvm_fault.c:1739 uvm_fault_unwire(fffffd8072953cb0,400000000000,400000011000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1702 kern_sysctl_dirs(49,ffff80003c996f28,4,400000000100,ffff80003c996f58,0,6ca32f2094dbd981,4) at kern_sysctl_dirs+0x5d1 kern_sysctl(ffff80003c996f24,5,400000000100,ffff80003c996f58,0,37,5780909ddef6396b) at kern_sysctl+0x12d sys/kern/kern_sysctl.c:526 sys_sysctl(ffff80002f112fa0,ffff80003c997090,ffff80003c996fe0) at sys_sysctl+0x425 syscall(ffff80003c997090) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2cef3194690, count: -9