panic: uvm_fault_unwire_locked: address not in map Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 200428 85063 0 0 0 1 syz-executor.6 *454289 25460 0 0 0x4000000 0 syz-executor.4 db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82968578) at panic+0x17b sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806bc65540,20000000,20001000) at uvm_fault_unwire_locked+0x321 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd806bc65540,20000000,20001000) at uvm_fault_unwire+0x43 sys/uvm/uvm_fault.c:1623 sys_sysctl(ffff80002a1a97f8,ffff80002d517380,ffff80002d5172d0) at sys_sysctl+0x239 sys/kern/kern_sysctl.c:259 syscall(ffff80002d517380) at syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff80002d517380) at syscall+0x533 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc5db1047c80, 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(ffffffff82968578) at panic+0x17b sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806bc65540,20000000,20001000) at uvm_fault_unwire_locked+0x321 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd806bc65540,20000000,20001000) at uvm_fault_unwire+0x43 sys/uvm/uvm_fault.c:1623 sys_sysctl(ffff80002a1a97f8,ffff80002d517380,ffff80002d5172d0) at sys_sysctl+0x239 sys/kern/kern_sysctl.c:259 syscall(ffff80002d517380) at syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff80002d517380) at syscall+0x533 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc5db1047c80, count: -7 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002d517080 rbx 0xffffffff82d28cb7 cpu_info_full_primary+0x2cb7 rdx 0 rcx 0xffff80002a1a97f8 rax 0xffffffff82d27ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xaf77b2ee94c9a186 r11 0x3c1987092633b48d r12 0xffffffff82d28ab8 cpu_info_full_primary+0x2ab8 r13 0 r14 0 r15 0x1 rip 0xffffffff823f13fc db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002d517070 ss 0 db_enter+0x1c: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.4) tid=454289 pid=25460 tcnt=4 stat=onproc flags process=0 proc=4000000 runpri=36, usrpri=78, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a1de548,0xffff80002d6ac018 process=0xffff8000ffff30e8 user=0xffff80002d512000, vmspace=0xfffffd806bc65540 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 85063 200428 93363 0 7 0 syz-executor.6 13729 125247 79892 0 2 0 syz-executor.5 38482 300908 27104 0 2 0 syz-executor.2 9714 231885 75759 0 2 0 syz-executor.3 85463 449764 87096 0 3 0x80 nanoslp syz-executor.0 85463 32 87096 0 3 0x4000080 fsleep syz-executor.0 85463 145151 87096 0 3 0x4000080 fsleep syz-executor.0 25460 7241 59043 0 2 0 syz-executor.4 25460 212378 59043 0 3 0x4000080 fsleep syz-executor.4 25460 211385 59043 0 3 0x4000080 fsleep syz-executor.4 *25460 454289 59043 0 7 0x4000000 syz-executor.4 74397 236431 33304 0 3 0x80 nanoslp syz-executor.1 74397 65106 33304 0 3 0x4000080 netio syz-executor.1 74397 51065 33304 0 3 0x4000080 fsleep syz-executor.1 79892 459227 35841 0 3 0x82 nanoslp syz-executor.5 93363 118562 35841 0 3 0x82 nanoslp syz-executor.6 75759 353131 35841 0 3 0x82 nanoslp syz-executor.3 17236 302022 0 0 3 0x14200 acct acct 33304 305372 35841 0 3 0x82 nanoslp syz-executor.1 87096 207762 35841 0 3 0x82 nanoslp syz-executor.0 44810 119682 1 0 3 0x100083 ttyin getty 95832 117851 35841 0 2 0x2 syz-executor.7 27104 402582 35841 0 3 0x82 nanoslp syz-executor.2 59043 266697 35841 0 3 0x82 nanoslp syz-executor.4 49684 231469 0 0 3 0x14200 bored sosplice 52935 504931 0 0 3 0x14280 nfsidl nfsio 546 353697 0 0 3 0x14280 nfsidl nfsio 35600 484350 0 0 3 0x14280 nfsidl nfsio 24717 503439 0 0 3 0x14280 nfsidl nfsio 80825 449750 0 0 3 0x14280 nfsidl nfsio 69456 83092 0 0 3 0x14280 nfsidl nfsio 79977 59862 0 0 3 0x14280 nfsidl nfsio 67590 66333 0 0 3 0x14280 nfsidl nfsio 8389 220296 0 0 3 0x14280 nfsidl nfsio 32637 483876 0 0 3 0x14280 nfsidl nfsio 99724 291419 0 0 3 0x14280 nfsidl nfsio 13565 212113 0 0 3 0x14280 nfsidl nfsio 57144 317278 0 0 3 0x14280 nfsidl nfsio 71324 326378 0 0 3 0x14280 nfsidl nfsio 8291 67892 0 0 3 0x14280 nfsidl nfsio 87652 423693 0 0 3 0x14280 nfsidl nfsio 94131 523431 0 0 3 0x14280 nfsidl nfsio 88201 132413 0 0 3 0x14280 nfsidl nfsio 24869 390448 0 0 3 0x14280 nfsidl nfsio 8513 37158 0 0 3 0x14280 nfsidl nfsio 35841 79635 75427 0 3 0x2000082 wait syz-fuzzer 35841 486524 75427 0 3 0x6000082 nanoslp syz-fuzzer 35841 139976 75427 0 3 0x6000082 wait syz-fuzzer 35841 402135 75427 0 3 0x6000082 wait syz-fuzzer 35841 57909 75427 0 3 0x6000082 thrsleep syz-fuzzer 35841 366383 75427 0 3 0x6000082 thrsleep syz-fuzzer 35841 226490 75427 0 3 0x6000082 thrsleep syz-fuzzer 35841 60766 75427 0 3 0x6000082 wait syz-fuzzer 35841 316327 75427 0 3 0x6000082 wait syz-fuzzer 35841 23067 75427 0 3 0x6000082 wait syz-fuzzer 35841 210957 75427 0 3 0x6000082 thrsleep syz-fuzzer 35841 104151 75427 0 3 0x6000082 wait syz-fuzzer 35841 343541 75427 0 3 0x6000082 thrsleep syz-fuzzer 35841 174027 75427 0 3 0x6000082 thrsleep syz-fuzzer 35841 111779 75427 0 3 0x6000082 wait syz-fuzzer 35841 300168 75427 0 3 0x6000082 kqread syz-fuzzer 75427 238662 73949 0 3 0x10008a sigsusp ksh 73949 312673 49812 0 3 0x9a kqread sshd 49812 302920 1 0 3 0x88 kqread sshd 87657 382336 68010 74 3 0x1100092 bpf pflogd 68010 230407 1 0 3 0x80 netio pflogd 66263 72341 20167 73 3 0x1100090 kqread syslogd 20167 415285 1 0 3 0x100082 netio syslogd 80481 474008 1 0 3 0x100080 kqread resolvd 37336 384144 83180 77 3 0x100092 kqread dhcpleased 23093 124593 83180 77 3 0x100092 kqread dhcpleased 83180 170464 1 0 3 0x80 kqread dhcpleased 61962 115915 0 0 3 0x14200 bored smr 13524 450066 0 0 2 0x14200 zerothread 46895 322933 0 0 3 0x14200 aiodoned aiodoned 63620 374514 0 0 3 0x14200 syncer update 42017 6188 0 0 3 0x14200 cleaner cleaner 81489 223470 0 0 3 0x14200 reaper reaper 13171 132875 0 0 3 0x14200 pgdaemon pagedaemon 16985 231641 0 0 3 0x14200 bored viomb 95091 196303 0 0 3 0x40014200 acpi0 acpi0 35056 409572 0 0 3 0x40014200 idle1 43466 241899 0 0 3 0x14200 bored softnet3 74633 388873 0 0 3 0x14200 bored softnet2 33237 404415 0 0 3 0x14200 bored softnet1 98100 79823 0 0 3 0x14200 bored softnet0 89110 344417 0 0 3 0x14200 bored systqmp 79773 81379 0 0 3 0x14200 bored systq 61599 299400 0 0 3 0x14200 tmoslp softclockmp 53038 512455 0 0 3 0x40014200 tmoslp softclock 14169 237009 0 0 3 0x40014200 idle0 1 398959 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 25460 (syz-executor.4) thread 0xffff80002a1a97f8 (454289) shared rwlock vmmaplk r = 0 (0xfffffd806bc65638) #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+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] #4 syscall+0x533 sys/arch/amd64/amd64/trap.c:577 #5 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82e2a1d0) #0 witness_lock+0x447 #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x46f 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+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] #7 syscall+0x533 sys/arch/amd64/amd64/trap.c:577 #8 Xsyscall+0x128 exclusive rwlock sysctllk r = 0 (0xffffffff82d3a290) #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+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] #3 syscall+0x533 sys/arch/amd64/amd64/trap.c:577 #4 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10198 6498K 7542K 166960K 22274 0 pcb 15 22K 27K 166960K 597 0 rtable 252 7K 8K 166960K 1819 0 pf 36 10K 11K 166960K 214 0 ifaddr 48 16K 17K 166960K 182 0 ifgroup 63 2K 2K 166960K 334 0 sysctl 3 0K 1K 166960K 16 0 counters 68 36K 37K 166960K 210 0 ioctlops 0 0K 4K 166960K 1869 0 iov 0 0K 18K 166960K 940 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1470 92K 92K 166960K 4864 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 71 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 1706 0 dirhash 12 2K 2K 166960K 39 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 17 61K 93K 166960K 7446 0 sigio 0 0K 0K 166960K 277 0 proc 71 91K 128K 166960K 1291 0 subproc 104 6K 6K 166960K 332 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 336 0 in_multi 98 7K 7K 166960K 332 0 ether_multi 1 0K 0K 166960K 6 0 mrt 0 0K 0K 166960K 5 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 73 334K 334K 166960K 73 0 exec 0 0K 1K 166960K 1204 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 444 432K 441K 166960K 74901 0 UVM aobj 131 6K 6K 166960K 135 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 244 0 NDP 14 0K 1K 166960K 137 0 temp 74 6772K 6892K 166960K 59012 0 kqueue 12 18K 24K 166960K 478 0 SYN cache 2 36K 44K 166960K 3 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 120 331 0 328 5 4 1 3 0 8 0 rtentry 112 571 0 455 4 0 4 4 0 8 0 unpcb 144 6525 0 6508 60 59 1 6 0 8 0 syncache 336 68 0 68 14 14 0 1 0 8 0 tcpqe 32 792 0 792 14 14 0 2 0 8 0 tcpcb 808 1553 0 1532 59 56 3 11 0 8 0 arp 120 139 0 118 1 0 1 1 0 8 0 ipq 40 3 0 3 1 1 0 1 0 8 0 ipqe 40 9 0 9 1 1 0 1 0 8 0 inpcb 392 4581 0 4553 88 83 5 16 0 8 1 nd6 136 80 0 55 1 0 1 1 0 8 0 pkpcb 40 91 0 91 5 5 0 1 0 8 0 kcovpl 48 25 0 17 1 0 1 1 0 8 0 ppxss 1168 19 0 19 5 5 0 1 0 8 0 pffrag 232 35 0 33 3 2 1 1 0 482 0 pffrnode 88 35 0 33 3 2 1 1 0 8 0 pffrent 40 88 0 86 3 2 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 256 0 226 1 0 1 1 0 8 0 pfstkey 128 262 0 232 2 0 2 2 0 8 0 pfstate 376 262 0 232 10 4 6 7 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 2 0 1 2 1 1 2 0 8 0 art_heap4 256 1843 0 1355 41 10 31 31 0 8 0 art_table 32 1845 0 1356 4 0 4 4 0 8 0 art_node 16 563 0 462 1 0 1 1 0 8 0 sysvmsgpl 40 39 0 39 1 1 0 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 1701 0 1691 1 0 1 1 0 8 0 shmpl 112 132 0 4 4 0 4 4 0 8 0 dirhash 1024 35 0 18 3 0 3 3 0 8 0 dino2pl 256 12418 0 10933 94 0 94 94 0 8 0 ffsino 272 12418 0 10933 100 0 100 100 0 8 0 nchpl 144 23811 0 22161 64 0 64 64 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 78692 0 78692 6 5 1 2 0 8 1 percpumem 16 119 0 71 1 0 1 1 0 8 0 vcpupl 2048 107 0 0 14 0 14 14 0 8 0 vmpool 696 113 0 6 11 1 10 10 0 8 0 kstatmem 264 170 0 142 6 3 3 3 0 8 0 scxspl 216 73847 0 73847 26 25 1 8 1 8 1 plimitpl 152 1098 0 1082 1 0 1 1 0 8 0 sigapl 424 7768 0 7698 10 2 8 9 0 8 0 futexpl 64 60191 0 60186 3 2 1 1 0 8 0 knotepl 120 359 0 0 11 0 11 11 0 8 0 kqueuepl 216 898 0 889 11 10 1 5 0 8 0 pipepl 320 1013 0 985 27 24 3 8 0 8 0 fdescpl 496 7721 0 7691 5 0 5 5 0 8 0 filepl 152 42331 0 42087 77 66 11 18 0 8 1 lockfpl 104 1784 0 1782 2 1 1 2 0 8 0 lockfspl 48 593 0 591 1 0 1 1 0 8 0 sessionpl 144 43 0 26 1 0 1 1 0 8 0 pgrppl 48 148 0 131 1 0 1 1 0 8 0 ucredpl 104 6395 0 6382 1 0 1 1 0 8 0 zombiepl 144 7698 0 7698 1 0 1 1 0 8 1 processpl 1136 7768 0 7698 6 0 6 6 0 8 0 procpl 680 20848 0 20756 16 7 9 10 0 8 0 srpgc 96 20 0 20 7 7 0 1 0 8 0 sosppl 168 85 0 83 11 10 1 1 0 8 0 sockpl 584 11536 0 11492 113 107 6 17 0 8 2 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 0 8 1 mcl12k 12288 33 0 0 2 0 2 2 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 25 0 0 3 0 3 3 0 8 0 mcl4k 4096 18 0 0 3 0 3 3 0 8 0 mcl2k2 2112 6 0 0 1 0 1 1 0 8 0 mcl2k 2048 418 0 0 47 9 38 47 0 8 1 mtagpl 96 415 0 0 8 0 8 8 0 8 0 mbufpl 256 1170 0 0 64 0 64 64 0 8 0 bufpl 280 17471 0 11154 452 0 452 452 0 8 0 anonpl 24 874907 0 860783 198 95 103 167 0 186 0 amapchunkpl 152 242359 0 241477 102 63 39 69 0 158 0 amappl16 200 17554 0 17061 87 60 27 43 0 8 1 amappl15 192 52 0 51 1 0 1 1 0 8 0 amappl14 184 217 0 203 2 1 1 2 0 8 0 amappl13 176 13 0 13 1 1 0 1 0 8 0 amappl12 168 8646 0 8616 4 2 2 3 0 8 0 amappl11 160 56 0 42 1 0 1 1 0 8 0 amappl10 152 43 0 33 1 0 1 1 0 8 0 amappl9 144 243 0 242 1 0 1 1 0 8 0 amappl8 136 536 0 430 4 0 4 4 0 8 0 amappl7 128 255 0 229 2 0 2 2 0 8 0 amappl6 120 559 0 548 1 0 1 1 0 8 0 amappl5 112 254 0 242 1 0 1 1 0 8 0 amappl4 104 693 0 660 4 3 1 2 0 8 0 amappl3 96 46462 0 46374 4 1 3 3 0 8 0 amappl2 88 8525 0 8451 3 1 2 3 0 8 0 amappl1 80 36968 0 36416 23 10 13 23 0 8 0 amappl 88 73982 0 73714 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 72 134 0 4 3 0 3 3 0 8 0 uaddrrnd 24 7835 0 7698 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 7835 0 7698 1 0 1 1 0 8 0 vmmpekpl 168 60951 0 60869 4 0 4 4 0 8 0 vmmpepl 168 473819 0 471230 291 160 131 139 0 357 8 vmsppl 448 7834 0 7698 18 2 16 16 0 8 0 rwobjpl 56 123427 0 115716 123 12 111 112 0 8 0 pdppl 4096 15677 0 15503 449 273 176 178 0 8 2 pvpl 32 45633 0 0 369 0 369 369 0 265 0 pmappl 248 7834 0 7698 10 1 9 9 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1060 0 491 17 0 17 17 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(ffffffff82968578) at panic+0x17b sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806bc65540,20000000,20001000) at uvm_fault_unwire_locked+0x321 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd806bc65540,20000000,20001000) at uvm_fault_unwire+0x43 sys/uvm/uvm_fault.c:1623 sys_sysctl(ffff80002a1a97f8,ffff80002d517380,ffff80002d5172d0) at sys_sysctl+0x239 sys/kern/kern_sysctl.c:259 syscall(ffff80002d517380) at syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff80002d517380) at syscall+0x533 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc5db1047c80, count: -7 ddb{0}> machine ddbcpu 1