panic: uvm_fault_unwire_locked: address not in map Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *204536 28582 0 0x1000 0x4080000 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833dc55f) at panic+0x1cf sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806c09fe20,400000000000,400000001000) at uvm_fault_unwire_locked+0x487 sys/uvm/uvm_fault.c:1741 uvm_fault_unwire(fffffd806c09fe20,400000000000,400000001000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1704 kern_sysctl_dirs(4e,ffff80003c951368,1,400000000100,ffff80003c951398,0,5b28b5a7f65a4096,1) at kern_sysctl_dirs+0x5d1 kern_sysctl(ffff80003c951364,2,400000000100,ffff80003c951398,0,27,63d4329c0436c8c3) at kern_sysctl+0x12d sys/kern/kern_sysctl.c:526 sys_sysctl(ffff80003c994cf8,ffff80003c9514d0,ffff80003c951420) at sys_sysctl+0x425 syscall(ffff80003c9514d0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb052ecf5130, 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(ffffffff833dc55f) at panic+0x1cf sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806c09fe20,400000000000,400000001000) at uvm_fault_unwire_locked+0x487 sys/uvm/uvm_fault.c:1741 uvm_fault_unwire(fffffd806c09fe20,400000000000,400000001000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1704 kern_sysctl_dirs(4e,ffff80003c951368,1,400000000100,ffff80003c951398,0,5b28b5a7f65a4096,1) at kern_sysctl_dirs+0x5d1 kern_sysctl(ffff80003c951364,2,400000000100,ffff80003c951398,0,27,63d4329c0436c8c3) at kern_sysctl+0x12d sys/kern/kern_sysctl.c:526 sys_sysctl(ffff80003c994cf8,ffff80003c9514d0,ffff80003c951420) at sys_sysctl+0x425 syscall(ffff80003c9514d0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb052ecf5130, count: -9 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80003c950f70 rbx 0xe rdx 0xffff80000145d200 rcx 0 rax 0xffff80003c994cf8 r8 0x101010101010101 r9 0x8080808080808080 r10 0x490e35df33a373e1 r11 0xf976e6eb64a3b442 r12 0 r13 0x7f7fffffc000 r14 0 r15 0x1 rip 0xffffffff8175cf35 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c950f60 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb> show proc PROC (syz-executor) tid=204536 pid=28582 tcnt=2 stat=onproc flags process=1000<SINGLEEXIT> proc=4080000<SUSPSINGLE,THREAD> runpri=32, usrpri=78, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003c9942b8 scnt=1 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c9942b8,0xffff80002a7cccf8 process=0xffff800033d24d20 user=0xffff80003c94c000, vmspace=0xfffffd806c09fe20 estcpu=28, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 16255 340546 81790 0 3 0x80 nanoslp syz-executor 16255 511536 81790 0 3 0x4000080 sysctllk syz-executor 16255 286406 81790 0 3 0x4000080 sysctllk syz-executor 16255 127688 81790 0 3 0x4000080 sysctllk syz-executor 61210 259938 71085 0 3 0x90 nanoslp syz-executor 61210 300113 71085 0 3 0x4000090 sysctllk syz-executor 56634 240471 37837 0 3 0x80 nanoslp syz-executor 56634 277132 37837 0 3 0x4000080 sysctllk syz-executor 16652 72978 4728 0 3 0x80 nanoslp syz-executor 16652 421876 4728 0 3 0x4000080 sysctllk syz-executor 16652 444304 4728 0 3 0x4000080 fsleep syz-executor 16652 328892 4728 0 3 0x4000080 sysctllk syz-executor 79566 250978 44112 0 3 0x80 nanoslp syz-executor 79566 55778 44112 0 3 0x4000080 sysctllk syz-executor 79566 278943 44112 0 3 0x4000080 fsleep syz-executor 29430 357771 6660 0 3 0x80 nanoslp syz-executor 29430 469364 6660 0 3 0x4000080 msgwait syz-executor 29430 52008 6660 0 3 0x4000080 fsleep syz-executor 28582 474777 59589 0 3 0x3000 suspend syz-executor *28582 204536 59589 0 7 0x4081000 syz-executor 67352 4476 0 0 3 0x14200 bored sosplice 59589 218351 2352 0 3 0x82 nanoslp syz-executor 44112 443026 2352 0 3 0x82 nanoslp syz-executor 6098 219074 2352 0 3 0x82 nanoslp syz-executor 71085 208520 2352 0 3 0x82 nanoslp syz-executor 6660 488430 2352 0 3 0x82 nanoslp syz-executor 4728 20921 2352 0 3 0x82 nanoslp syz-executor 81790 205731 2352 0 3 0x82 nanoslp syz-executor 37837 499863 2352 0 3 0x82 nanoslp syz-executor 2352 246054 61220 0 3 0x82 kqread syz-executor 61220 166134 54624 0 3 0x10008a sigsusp ksh 54624 468506 82313 0 3 0x98 kqread sshd-session 82313 235955 94978 0 3 0x92 kqread sshd-session 99331 492645 1 0 3 0x100083 ttyin getty 94978 140712 1 0 3 0x88 kqread sshd 23580 5903 13434 73 3 0x1100090 kqread syslogd 13434 110247 1 0 3 0x100082 sbwait syslogd 46264 468690 1 0 3 0x100080 kqread resolvd 66665 252081 72019 77 3 0x100092 kqread dhcpleased 24096 380137 72019 77 3 0x100092 kqread dhcpleased 72019 343122 1 0 3 0x80 kqread dhcpleased 78035 202898 0 0 3 0x14200 bored smr 55475 228362 0 0 2 0x14200 zerothread 64530 420712 0 0 3 0x14200 aiodoned aiodoned 64905 4389 0 0 3 0x14200 syncer update 86085 169428 0 0 3 0x14200 cleaner cleaner 86451 28505 0 0 3 0x14200 reaper reaper 55951 423745 0 0 3 0x14200 pgdaemon pagedaemon 54234 405347 0 0 3 0x14200 bored viomb 71985 248708 0 0 3 0x40014200 acpi0 acpi0 5936 52449 0 0 3 0x14200 bored softnet3 46138 230380 0 0 3 0x14200 bored softnet2 29157 226917 0 0 3 0x14200 bored softnet1 31719 109385 0 0 3 0x14200 bored softnet0 82479 405051 0 0 3 0x14200 bored systqmp 84689 437979 0 0 3 0x14200 bored systq 60543 131005 0 0 3 0x40014200 tmoslp softclock 73904 178710 0 0 3 0x40014200 idle0 1 460831 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10187 11048K 11559K 166960K 11995 0 pcb 17 12K 12K 166960K 69 0 rtable 245 7K 8K 166960K 388 0 pf 38 14K 14K 166960K 60 0 ifaddr 46 8K 8K 166960K 64 0 ifgroup 64 2K 2K 166960K 93 0 sysctl 4 1K 1K 166960K 4 0 counters 35 18K 18K 166960K 82 0 ioctlops 0 0K 4K 166960K 98 0 iov 0 0K 16K 166960K 83 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1411 89K 89K 166960K 1847 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 5K 166960K 8 0 VM map 2 1K 1K 166960K 2 0 sem 9 0K 0K 166960K 11 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 89K 166960K 422 0 sigio 0 0K 0K 166960K 5 0 proc 60 59K 91K 166960K 501 0 subproc 72 4K 4K 166960K 73 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 42 0 in_multi 100 7K 7K 166960K 121 0 ether_multi 1 0K 0K 166960K 6 0 mrt 1 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 388 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 233 72K 88K 166960K 5200 0 UVM aobj 12 4K 4K 166960K 13 0 pinsyscall 39 78K 92K 166960K 1444 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 7 0 NDP 14 0K 2K 166960K 39 0 temp 44 8676K 8934K 166960K 13902 0 kqueue 15 24K 32K 166960K 64 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 60 0 57 1 0 1 1 0 8 0 rtentry 112 119 0 6 4 0 4 4 0 8 0 unpcb 144 325 0 306 4 0 4 4 0 8 3 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 808 72 0 67 2 0 2 2 0 8 1 arp 88 18 0 0 1 0 1 1 0 8 0 ipq 40 2 0 1 1 0 1 1 0 8 0 ipqe 40 3 0 2 1 0 1 1 0 8 0 inpcb 344 492 0 483 8 0 8 8 0 8 7 nd6 104 26 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 mppekey 1024 33 0 33 1 0 1 1 0 8 1 ppxss 1072 46 0 43 1 0 1 1 0 8 0 pppxif 1384 38 0 36 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 480 0 18 29 0 29 29 0 8 0 art_table 32 481 0 18 4 0 4 4 0 8 0 art_node 16 116 0 13 1 0 1 1 0 8 0 sysvmsgpl 40 5 0 4 1 0 1 1 0 8 0 semapl 112 9 0 2 1 0 1 1 0 8 0 shmpl 112 10 0 1 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2214 0 712 95 0 95 95 0 8 0 ffsino 248 2214 0 712 95 0 95 95 0 8 0 nchpl 144 2799 0 1117 63 0 63 63 0 8 0 uvmvnodes 80 2550 0 0 53 0 53 53 0 8 0 vnodes 216 2550 0 0 142 0 142 142 0 8 0 namei 1024 8861 0 8861 1 0 1 1 0 8 1 kstatmem 264 46 0 18 2 0 2 2 0 8 0 scxspl 216 8528 0 8528 8 0 8 8 1 8 8 plimitpl 152 103 0 86 1 0 1 1 0 8 0 sigapl 424 700 0 653 6 0 6 6 0 8 0 futexpl 64 4570 0 4567 1 0 1 1 0 8 0 knotepl 120 13166 0 13115 9 0 9 9 0 8 7 kqueuepl 184 152 0 140 4 0 4 4 0 8 3 pipepl 296 190 0 162 8 0 8 8 0 8 5 fdescpl 440 683 0 653 5 0 5 5 0 8 1 filepl 120 4203 0 3972 15 0 15 15 0 8 6 lockfpl 104 181 0 179 2 0 2 2 0 8 1 lockfspl 48 50 0 48 1 0 1 1 0 8 0 sessionpl 144 21 0 13 1 0 1 1 0 8 0 pgrppl 48 32 0 16 1 0 1 1 0 8 0 ucredpl 104 970 0 958 1 0 1 1 0 8 0 zombiepl 144 655 0 653 1 0 1 1 0 8 0 processpl 1112 700 0 653 4 0 4 4 0 8 0 procpl 656 1143 0 1083 6 0 6 6 0 8 0 sosppl 168 2 0 2 1 0 1 1 0 8 1 sockpl 528 882 0 851 12 2 10 12 0 8 7 mcl64k 65536 8 0 8 1 0 1 1 0 8 1 mcl12k 12288 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 8 0 8 1 0 1 1 0 8 1 mcl4k 4096 2840 0 2785 15 0 15 15 0 8 7 mcl2k 2048 467 0 465 3 0 3 3 0 8 2 mtagpl 96 34 0 7 1 0 1 1 0 8 0 mbufpl 256 7283 0 7107 19 0 19 19 0 8 6 bufpl 280 2806 0 124 192 0 192 192 0 8 0 anonpl 24 140982 0 137640 45 0 45 45 0 187 18 amapchunkpl 152 17663 0 17125 34 0 34 34 0 158 13 amappl16 200 2960 0 2928 25 10 15 15 0 8 11 amappl15 192 9 0 9 1 0 1 1 0 8 1 amappl14 184 105 0 95 1 0 1 1 0 8 0 amappl13 176 6 0 6 1 0 1 1 0 8 1 amappl12 168 1291 0 1261 2 0 2 2 0 8 0 amappl11 160 42 0 32 1 0 1 1 0 8 0 amappl10 152 8 0 8 1 0 1 1 0 8 1 amappl9 144 244 0 244 1 0 1 1 0 8 1 amappl8 136 27 0 26 1 0 1 1 0 8 0 amappl7 128 94 0 84 1 0 1 1 0 8 0 amappl6 120 175 0 171 1 0 1 1 0 8 0 amappl5 112 114 0 108 1 0 1 1 0 8 0 amappl4 104 280 0 267 1 0 1 1 0 8 0 amappl3 96 3086 0 2964 4 0 4 4 0 8 1 amappl2 88 609 0 554 2 0 2 2 0 8 0 amappl1 80 8231 0 7710 12 0 12 12 0 8 0 amappl 88 4832 0 4648 5 0 5 5 0 92 0 dma4096 4096 1 0 1 1 0 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 0 1 1 0 8 1 dma128 128 253 0 253 1 0 1 1 0 8 1 dma64 64 7 0 7 1 0 1 1 0 8 1 dma32 32 7 0 7 1 0 1 1 0 8 1 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 12 0 1 1 0 1 1 0 8 0 uaddrrnd 24 683 0 653 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 683 0 653 1 0 1 1 0 8 0 vmmpekpl 168 7086 0 7055 2 0 2 2 0 8 0 vmmpepl 168 47275 0 45472 89 0 89 89 0 357 8 vmsppl 360 682 0 653 4 0 4 4 0 8 1 rwobjpl 32 18431 0 15000 29 0 29 29 0 8 1 pdppl 4096 1373 0 1306 93 26 67 79 0 8 0 pvpl 32 329691 0 319402 117 0 117 117 0 265 34 pmappl 216 682 0 653 2 0 2 2 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 268 0 26 7 0 7 7 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(ffffffff833dc55f) at panic+0x1cf sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806c09fe20,400000000000,400000001000) at uvm_fault_unwire_locked+0x487 sys/uvm/uvm_fault.c:1741 uvm_fault_unwire(fffffd806c09fe20,400000000000,400000001000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1704 kern_sysctl_dirs(4e,ffff80003c951368,1,400000000100,ffff80003c951398,0,5b28b5a7f65a4096,1) at kern_sysctl_dirs+0x5d1 kern_sysctl(ffff80003c951364,2,400000000100,ffff80003c951398,0,27,63d4329c0436c8c3) at kern_sysctl+0x12d sys/kern/kern_sysctl.c:526 sys_sysctl(ffff80003c994cf8,ffff80003c9514d0,ffff80003c951420) at sys_sysctl+0x425 syscall(ffff80003c9514d0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb052ecf5130, 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(ffffffff833dc55f) at panic+0x1cf sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806c09fe20,400000000000,400000001000) at uvm_fault_unwire_locked+0x487 sys/uvm/uvm_fault.c:1741 uvm_fault_unwire(fffffd806c09fe20,400000000000,400000001000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1704 kern_sysctl_dirs(4e,ffff80003c951368,1,400000000100,ffff80003c951398,0,5b28b5a7f65a4096,1) at kern_sysctl_dirs+0x5d1 kern_sysctl(ffff80003c951364,2,400000000100,ffff80003c951398,0,27,63d4329c0436c8c3) at kern_sysctl+0x12d sys/kern/kern_sysctl.c:526 sys_sysctl(ffff80003c994cf8,ffff80003c9514d0,ffff80003c951420) at sys_sysctl+0x425 syscall(ffff80003c9514d0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb052ecf5130, count: -9