panic: uvm_fault_unwire_locked: address not in map Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *221363 19965 32767 0x10 0x4000000 0 syz-executor.7 91567 63605 32767 0x10 0 1 syz-executor.1 db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8285a755) at panic+0x17b sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806bf9f598,20002000,20004000) at uvm_fault_unwire_locked+0x321 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd806bf9f598,20002000,20004000) at uvm_fault_unwire+0x43 sys/uvm/uvm_fault.c:1623 sys_sysctl(ffff80002a27c558,ffff80002f0fa110,ffff80002f0fa160) at sys_sysctl+0x239 sys/kern/kern_sysctl.c:259 syscall(ffff80002f0fa1e0) at syscall+0x4e6 sys/arch/amd64/amd64/trap.c:606 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc4a0d83cdd0, count: 8 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: uvm_fault_unwire_locked: address not in map ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8285a755) at panic+0x17b sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806bf9f598,20002000,20004000) at uvm_fault_unwire_locked+0x321 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd806bf9f598,20002000,20004000) at uvm_fault_unwire+0x43 sys/uvm/uvm_fault.c:1623 sys_sysctl(ffff80002a27c558,ffff80002f0fa110,ffff80002f0fa160) at sys_sysctl+0x239 sys/kern/kern_sysctl.c:259 syscall(ffff80002f0fa1e0) at syscall+0x4e6 sys/arch/amd64/amd64/trap.c:606 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc4a0d83cdd0, count: -7 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002f0f9ee0 rbx 0xffffffff82b7fba7 cpu_info_full_primary+0x2ba7 rdx 0 rcx 0xffff80002a27c558 rax 0xffffffff82b7eff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xd204b8ab44fbdde9 r11 0x97bd4cd0f1494129 r12 0xffffffff82b7f9a8 cpu_info_full_primary+0x29a8 r13 0 r14 0 r15 0x1 rip 0xffffffff81dab7fc db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002f0f9ed0 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.7) tid=221363 pid=19965 tcnt=4 stat=onproc flags process=10 proc=4000000 runpri=36, usrpri=86, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a27c2b0,0xffff80002a27c810 process=0xffff80002bee0020 user=0xffff80002f0f5000, vmspace=0xfffffd806bf9f598 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 19965 447985 60452 32767 2 0x10 syz-executor.7 19965 291528 60452 32767 2 0x4000010 syz-executor.7 *19965 221363 60452 32767 7 0x4000010 syz-executor.7 19965 523320 60452 32767 2 0x4000010 syz-executor.7 63605 91567 6307 32767 7 0x10 syz-executor.1 63605 166661 6307 32767 3 0x4000090 ttyretype syz-executor.1 87933 74569 54800 32767 2 0x10 syz-executor.5 87933 216873 54800 32767 3 0x4000090 fsleep syz-executor.5 46628 73232 44883 32767 2 0x10 syz-executor.3 46628 466175 44883 32767 3 0x4000090 fsleep syz-executor.3 52402 507911 20565 32767 2 0x10 syz-executor.0 52402 461955 20565 32767 2 0x4000010 syz-executor.0 27429 205550 0 0 3 0x14200 bored sosplice 60452 514173 44471 32767 3 0x90 nanoslp syz-executor.7 44471 449945 13146 0 3 0x82 wait syz-executor.7 88663 273730 7055 32767 2 0x10 syz-executor.6 7055 64316 13146 0 3 0x82 wait syz-executor.6 54800 514185 48946 32767 3 0x90 nanoslp syz-executor.5 44883 169837 5540 32767 2 0x10 syz-executor.3 73032 190455 62802 32767 2 0x10 syz-executor.4 48946 228285 13146 0 3 0x82 wait syz-executor.5 62802 121184 13146 0 3 0x82 wait syz-executor.4 5540 237225 13146 0 3 0x82 wait syz-executor.3 75068 188170 5475 32767 2 0x10 syz-executor.2 20565 462928 71634 32767 3 0x90 nanoslp syz-executor.0 5475 66245 13146 0 3 0x82 wait syz-executor.2 6307 264332 17003 32767 3 0x90 nanoslp syz-executor.1 17003 451216 13146 0 3 0x82 wait syz-executor.1 71634 198511 13146 0 3 0x82 wait syz-executor.0 13146 432137 61147 0 3 0x2000082 wait syz-fuzzer 13146 398932 61147 0 3 0x6000082 nanoslp syz-fuzzer 13146 18874 61147 0 3 0x6000082 wait syz-fuzzer 13146 239635 61147 0 3 0x6000082 thrsleep syz-fuzzer 13146 377916 61147 0 3 0x6000082 wait syz-fuzzer 13146 507450 61147 0 3 0x6000082 wait syz-fuzzer 13146 320673 61147 0 3 0x6000082 wait syz-fuzzer 13146 492648 61147 0 3 0x6000082 thrsleep syz-fuzzer 13146 173012 61147 0 3 0x6000082 wait syz-fuzzer 13146 385466 61147 0 3 0x6000082 wait syz-fuzzer 13146 359827 61147 0 3 0x6000082 thrsleep syz-fuzzer 13146 518654 61147 0 3 0x6000082 wait syz-fuzzer 13146 219737 61147 0 2 0x6000082 syz-fuzzer 13146 173513 61147 0 3 0x6000082 thrsleep syz-fuzzer 13146 524257 61147 0 2 0x6000082 syz-fuzzer 61147 35256 91165 0 3 0x10008a sigsusp ksh 91165 488322 80771 0 2 0x9a sshd 79299 8341 1 0 3 0x100083 ttyin getty 80771 173680 1 0 3 0x88 kqread sshd 64346 239825 1812 73 3 0x1100090 kqread syslogd 1812 200827 1 0 3 0x100082 netio syslogd 83102 54720 1 0 3 0x100080 kqread resolvd 10375 94912 70480 77 3 0x100092 kqread dhcpleased 35066 100231 70480 77 3 0x100092 kqread dhcpleased 70480 323069 1 0 3 0x80 kqread dhcpleased 59540 424122 0 0 3 0x14200 bored smr 24403 226614 0 0 2 0x14200 zerothread 63128 349535 0 0 3 0x14200 aiodoned aiodoned 15058 141998 0 0 3 0x14200 syncer update 69648 384011 0 0 3 0x14200 cleaner cleaner 16395 100489 0 0 3 0x14200 reaper reaper 79506 223466 0 0 3 0x14200 pgdaemon pagedaemon 55297 449682 0 0 3 0x14200 bored viomb 61744 193098 0 0 3 0x40014200 acpi0 acpi0 46593 292368 0 0 3 0x40014200 idle1 29073 141892 0 0 3 0x14200 bored softnet3 91568 516776 0 0 3 0x14200 bored softnet2 96430 75828 0 0 3 0x14200 bored softnet1 31255 248168 0 0 3 0x14200 bored softnet0 62949 308074 0 0 3 0x14200 bored systqmp 72841 420156 0 0 3 0x14200 bored systq 63438 303908 0 0 3 0x14200 tmoslp softclockmp 24653 169550 0 0 3 0x40014200 tmoslp softclock 20309 398039 0 0 3 0x40014200 idle0 1 476000 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 19965 (syz-executor.7) thread 0xffff80002a27c558 (221363) shared rwlock vmmaplk r = 0 (0xfffffd806bf9f690) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 uvm_fault_unwire+0x35 sys/uvm/uvm_fault.c:1622 #3 sys_sysctl+0x239 sys/kern/kern_sysctl.c:259 #4 syscall+0x4e6 sys/arch/amd64/amd64/trap.c:606 #5 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82d0c3a8) #0 witness_lock+0x447 #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x46d sys/kern/sched_bsd.c:470 #3 sleep_finish+0x19b sys/kern/kern_synch.c:414 #4 rw_enter+0x341 sys/kern/kern_rwlock.c:285 #5 uvm_fault_unwire+0x35 sys/uvm/uvm_fault.c:1622 #6 sys_sysctl+0x239 sys/kern/kern_sysctl.c:259 #7 syscall+0x4e6 sys/arch/amd64/amd64/trap.c:606 #8 Xsyscall+0x128 exclusive rwlock sysctllk r = 0 (0xffffffff82b9ad10) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 sys_sysctl+0x1c3 sys/kern/kern_sysctl.c:238 #3 syscall+0x4e6 sys/arch/amd64/amd64/trap.c:606 #4 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10223 6414K 6421K 166960K 11303 0 pcb 13 10K 12K 166960K 15 0 rtable 238 6K 6K 166960K 370 0 pf 29 8K 8K 166960K 29 0 ifaddr 44 15K 15K 166960K 46 0 ifgroup 50 2K 2K 166960K 50 0 sysctl 1 0K 0K 166960K 1 0 counters 64 36K 36K 166960K 64 0 ioctlops 0 0K 2K 166960K 36 0 iov 0 0K 16K 166960K 43 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1279 80K 80K 166960K 1675 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 22 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 138 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 23 85K 117K 166960K 1139 0 sigio 0 0K 0K 166960K 6 0 proc 56 78K 103K 166960K 504 0 subproc 104 6K 6K 166960K 104 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 10 0 in_multi 99 7K 7K 166960K 99 0 ether_multi 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 259 1155K 1155K 166960K 259 0 exec 0 0K 1K 166960K 407 0 tdb 3 0K 0K 166960K 3 0 pagedep 1 8K 8K 166960K 1 0 inodedep 1 32K 32K 166960K 1 0 newblk 1 0K 0K 166960K 1 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 351 88K 88K 166960K 13520 0 UVM aobj 62 2K 2K 166960K 68 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 18 0 NDP 11 0K 2K 166960K 27 0 temp 73 5928K 5992K 166960K 6499 0 kqueue 12 18K 24K 166960K 124 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 24 0 0 1 0 1 1 0 8 0 rtpcb 120 129 0 126 3 2 1 3 0 8 0 rtentry 112 114 0 2 4 0 4 4 0 8 0 unpcb 144 3408 0 3395 16 8 8 10 0 8 7 syncache 312 24 0 24 2 1 1 1 0 8 1 tcpqe 32 197 0 197 2 1 1 1 0 8 1 tcpcb 808 533 0 513 15 4 11 12 0 8 8 arp 120 19 0 0 1 0 1 1 0 8 0 ipq 40 6 0 4 1 0 1 1 0 8 0 ipqe 40 15 0 13 1 0 1 1 0 8 0 inpcb 368 768 0 745 14 3 11 11 0 8 8 nd6 136 26 0 1 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 463 0 7 29 0 29 29 0 8 0 art_table 32 464 0 7 4 0 4 4 0 8 0 art_node 16 113 0 11 1 0 1 1 0 8 0 sysvmsgpl 40 13 0 6 1 0 1 1 0 8 0 semapl 112 136 0 126 1 0 1 1 0 8 0 shmpl 112 65 0 6 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 3197 0 1755 91 0 91 91 0 8 0 ffsino 272 3197 0 1755 97 0 97 97 0 8 0 nchpl 144 4935 0 3255 63 0 63 63 0 8 0 uvmvnodes 80 3310 0 0 68 0 68 68 0 8 0 vnodes 216 3310 0 0 184 0 184 184 0 8 0 namei 1024 15628 0 15628 2 1 1 2 0 8 1 percpumem 16 46 0 0 1 0 1 1 0 8 0 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 14344 0 14344 13 10 3 8 1 8 3 plimitpl 152 106 0 82 1 0 1 1 0 8 0 sigapl 424 1437 0 1384 7 0 7 7 0 8 0 futexpl 64 9056 0 9054 1 0 1 1 0 8 0 knotepl 120 156 0 0 5 0 5 5 0 8 0 kqueuepl 216 300 0 292 9 4 5 5 0 8 4 pipepl 320 282 0 254 9 0 9 9 0 8 6 fdescpl 496 1418 0 1384 7 2 5 6 0 8 0 filepl 152 10778 0 10541 31 13 18 21 0 8 8 lockfpl 104 116 0 114 1 0 1 1 0 8 0 lockfspl 48 44 0 42 1 0 1 1 0 8 0 sessionpl 144 23 0 7 1 0 1 1 0 8 0 pgrppl 48 26 0 10 1 0 1 1 0 8 0 ucredpl 104 1905 0 1887 1 0 1 1 0 8 0 zombiepl 144 1384 0 1384 1 0 1 1 0 8 1 processpl 1072 1437 0 1384 5 0 5 5 0 8 0 procpl 680 3316 0 3242 9 1 8 8 0 8 1 sosppl 168 11 0 6 2 1 1 1 0 8 0 sockpl 488 4326 0 4287 119 96 23 34 0 8 16 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 8 0 0 1 0 1 1 0 8 0 mcl12k 12288 9 0 0 1 0 1 1 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 10 0 0 2 0 2 2 0 8 0 mcl4k 4096 20 0 0 3 0 3 3 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 238 0 0 30 0 30 30 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 347 0 0 20 0 20 20 0 8 0 bufpl 288 5804 0 140 405 0 405 405 0 8 0 anonpl 24 283809 0 272432 81 6 75 75 0 186 2 amapchunkpl 152 43423 0 42528 40 1 39 39 0 158 2 amappl16 200 6978 0 6689 16 0 16 16 0 8 0 amappl15 192 16 0 16 2 2 0 1 0 8 0 amappl14 184 150 0 138 2 1 1 2 0 8 0 amappl13 176 13 0 13 1 1 0 1 0 8 0 amappl12 168 2064 0 2026 3 0 3 3 0 8 0 amappl11 160 57 0 47 1 0 1 1 0 8 0 amappl10 152 25 0 14 1 0 1 1 0 8 0 amappl9 144 192 0 189 2 1 1 1 0 8 0 amappl8 136 271 0 208 3 0 3 3 0 8 0 amappl7 128 175 0 153 2 0 2 2 0 8 0 amappl6 120 310 0 300 1 0 1 1 0 8 0 amappl5 112 148 0 140 1 0 1 1 0 8 0 amappl4 104 436 0 415 2 1 1 2 0 8 0 amappl3 96 8608 0 8512 3 0 3 3 0 8 0 amappl2 88 1888 0 1813 3 1 2 3 0 8 0 amappl1 80 13042 0 12514 22 9 13 22 0 8 0 amappl 88 12975 0 12728 7 0 7 7 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 67 0 6 2 0 2 2 0 8 0 uaddrrnd 24 1418 0 1384 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1418 0 1384 1 0 1 1 0 8 0 vmmpekpl 168 15844 0 15788 3 0 3 3 0 8 0 vmmpepl 168 103029 0 100732 119 12 107 116 0 357 1 vmsppl 464 1417 0 1384 7 2 5 6 0 8 0 rwobjpl 56 35637 0 30973 67 1 66 66 0 8 0 pdppl 4096 2844 0 2768 128 46 82 92 0 8 6 pvpl 32 44714 0 0 363 2 361 361 0 265 0 pmappl 248 1417 0 1384 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 856 0 58 23 0 23 23 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8285a755) at panic+0x17b sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806bf9f598,20002000,20004000) at uvm_fault_unwire_locked+0x321 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd806bf9f598,20002000,20004000) at uvm_fault_unwire+0x43 sys/uvm/uvm_fault.c:1623 sys_sysctl(ffff80002a27c558,ffff80002f0fa110,ffff80002f0fa160) at sys_sysctl+0x239 sys/kern/kern_sysctl.c:259 syscall(ffff80002f0fa1e0) at syscall+0x4e6 sys/arch/amd64/amd64/trap.c:606 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc4a0d83cdd0, count: -7 ddb{0}> machine ddbcpu 1