panic: uvm_fault_unwire_locked: address not in map Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *449118 86264 0 0 0x4000000 0 syz-executor.6 88766 17766 0 0x2 0 1 syz-executor.2 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82652636) at panic+0x177 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd8064dd1478,20000000,20001000) at uvm_fault_unwire_locked+0x321 sys/uvm/uvm_fault.c:1651 uvm_fault_unwire(fffffd8064dd1478,20000000,20001000) at uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1611 sys_sysctl(ffff8000213357a0,ffff800022d6ab88,ffff800022d6abd0) at sys_sysctl+0x229 sys/kern/kern_sysctl.c:255 syscall(ffff800022d6ac50) at syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff800022d6ac50) at syscall+0x438 sys/arch/amd64/amd64/trap.c:599 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa8044fa0fa0, 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+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82652636) at panic+0x177 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd8064dd1478,20000000,20001000) at uvm_fault_unwire_locked+0x321 sys/uvm/uvm_fault.c:1651 uvm_fault_unwire(fffffd8064dd1478,20000000,20001000) at uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1611 sys_sysctl(ffff8000213357a0,ffff800022d6ab88,ffff800022d6abd0) at sys_sysctl+0x229 sys/kern/kern_sysctl.c:255 syscall(ffff800022d6ac50) at syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff800022d6ac50) at syscall+0x438 sys/arch/amd64/amd64/trap.c:599 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa8044fa0fa0, count: -7 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800022d6a950 rbx 0xffffffff829bdb8f cpu_info_full_primary+0x2b8f rdx 0 rcx 0 rax 0xffff8000213357a0 r8 0 r9 0x8080808080808080 r10 0xe652c49c628078f r11 0x378fc7022e992a8f r12 0xffffffff829bd990 cpu_info_full_primary+0x2990 r13 0 r14 0 r15 0x1 rip 0xffffffff81370d48 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800022d6a940 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.6) pid=449118 stat=onproc flags process=0 proc=4000000 pri=36, usrpri=84, nice=20 forw=0xffffffffffffffff, list=0xffff800021334fc0,0xffff800021334d30 process=0xffff80002129a5c0 user=0xffff800022d65000, vmspace=0xfffffd8064dd1478 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 379 38486 44003 0 2 0 syz-executor.7 91714 512089 69241 0 2 0 syz-executor.0 60139 357526 20905 0 2 0 syz-executor.4 60139 176185 20905 0 3 0x4000080 fsleep syz-executor.4 60139 385935 20905 0 3 0x4000080 fsleep syz-executor.4 60139 487661 20905 0 2 0x4000000 syz-executor.4 86264 348080 93549 0 2 0 syz-executor.6 *86264 449118 93549 0 7 0x4000000 syz-executor.6 86264 400607 93549 0 2 0x4000000 syz-executor.6 86264 115280 93549 0 2 0x4000000 syz-executor.6 86264 502395 93549 0 2 0x4000000 syz-executor.6 52808 395141 60355 0 2 0 syz-executor.1 52808 487903 60355 0 3 0x4000080 fsleep syz-executor.1 75542 311892 44352 0 2 0 syz-executor.5 75542 447546 44352 0 3 0x4000080 fsleep syz-executor.5 27160 336608 17766 0 3 0x4003000 suspend syz-executor.2 27160 319372 17766 0 2 0x4081000 syz-executor.2 68960 255206 19005 0 3 0x80 nanoslp syz-executor.3 68960 313148 19005 0 3 0x4000080 fsleep syz-executor.3 68960 140546 19005 0 3 0x4000080 fsleep syz-executor.3 66104 147825 1 0 3 0x100083 ttyin getty 69241 281724 32941 0 2 0x482 syz-executor.0 62016 260271 0 0 3 0x14280 nfsidl nfsio 48809 443891 0 0 3 0x14280 nfsidl nfsio 17356 22136 0 0 3 0x14280 nfsidl nfsio 50431 109326 0 0 3 0x14280 nfsidl nfsio 56565 181705 0 0 3 0x14280 nfsidl nfsio 44588 320649 0 0 3 0x14280 nfsidl nfsio 82892 282747 0 0 3 0x14280 nfsidl nfsio 7597 79674 0 0 3 0x14280 nfsidl nfsio 76519 434542 0 0 3 0x14280 nfsidl nfsio 45257 156292 0 0 3 0x14280 nfsidl nfsio 27127 377686 0 0 3 0x14280 nfsidl nfsio 89910 9480 0 0 3 0x14280 nfsidl nfsio 47006 122710 0 0 3 0x14280 nfsidl nfsio 11946 462539 0 0 3 0x14280 nfsidl nfsio 43445 401614 0 0 3 0x14280 nfsidl nfsio 11297 242838 0 0 3 0x14280 nfsidl nfsio 75241 169721 0 0 3 0x14280 nfsidl nfsio 82655 268055 0 0 3 0x14280 nfsidl nfsio 21407 124137 0 0 3 0x14280 nfsidl nfsio 49667 231403 0 0 3 0x14280 nfsidl nfsio 60355 510402 32941 0 2 0x2 syz-executor.1 44003 420697 32941 0 3 0x82 nanoslp syz-executor.7 20905 507017 32941 0 3 0x82 nanoslp syz-executor.4 17766 88766 32941 0 7 0x2 syz-executor.2 44352 252639 32941 0 2 0x482 syz-executor.5 88956 394841 0 0 3 0x14200 acct acct 79886 192714 0 0 3 0x14200 bored sosplice 93549 222387 32941 0 3 0x82 nanoslp syz-executor.6 19005 501495 32941 0 2 0x482 syz-executor.3 32941 468378 67490 0 3 0x82 thrsleep syz-fuzzer 32941 18378 67490 0 2 0x4000482 syz-fuzzer 32941 88321 67490 0 3 0x4000082 thrsleep syz-fuzzer 32941 180474 67490 0 3 0x4000082 kqread syz-fuzzer 32941 521128 67490 0 3 0x4000082 thrsleep syz-fuzzer 32941 386621 67490 0 3 0x4000082 wait syz-fuzzer 32941 407763 67490 0 3 0x4000082 wait syz-fuzzer 32941 519474 67490 0 3 0x4000082 wait syz-fuzzer 32941 169187 67490 0 3 0x4000082 thrsleep syz-fuzzer 32941 249529 67490 0 3 0x4000082 wait syz-fuzzer 32941 286001 67490 0 3 0x4000082 wait syz-fuzzer 32941 251964 67490 0 3 0x4000082 wait syz-fuzzer 32941 249539 67490 0 3 0x4000082 thrsleep syz-fuzzer 32941 202747 67490 0 3 0x4000082 wait syz-fuzzer 32941 279900 67490 0 3 0x4000082 wait syz-fuzzer 32941 272682 67490 0 3 0x4000082 thrsleep syz-fuzzer 67490 435605 96615 0 3 0x10008a sigsusp ksh 96615 331528 80481 0 3 0x9a kqread sshd 80481 274272 1 0 3 0x88 kqread sshd 97802 216217 27801 74 3 0x1100092 bpf pflogd 27801 197623 1 0 3 0x80 netio pflogd 91200 62676 30225 73 3 0x1100090 kqread syslogd 30225 377677 1 0 3 0x100082 netio syslogd 88189 236042 1 0 3 0x100080 kqread resolvd 1622 210036 79056 77 3 0x100092 kqread dhcpleased 72814 124704 79056 77 3 0x100092 kqread dhcpleased 79056 283092 1 0 3 0x80 kqread dhcpleased 63095 494971 0 0 3 0x14200 bored smr 72897 35043 0 0 2 0x14200 zerothread 81820 100581 0 0 3 0x14200 aiodoned aiodoned 14015 490195 0 0 3 0x14200 syncer update 95640 274316 0 0 3 0x14200 cleaner cleaner 53560 25860 0 0 3 0x14200 reaper reaper 25688 209465 0 0 3 0x14200 pgdaemon pagedaemon 21506 241419 0 0 3 0x14200 bored viomb 5648 318358 0 0 3 0x40014200 acpi0 acpi0 2404 37122 0 0 3 0x40014200 idle1 85262 415970 0 0 3 0x14200 bored softnet 74145 41082 0 0 3 0x14200 bored softnet 25630 223143 0 0 3 0x14200 bored softnet 21626 291622 0 0 3 0x14200 bored softnet 60858 156435 0 0 3 0x14200 bored systqmp 42800 2993 0 0 3 0x14200 bored systq 87183 146114 0 0 2 0x40014200 softclock 9005 460231 0 0 3 0x40014200 idle0 1 304177 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 86264 (syz-executor.6) thread 0xffff80002131ca90 (348080) exclusive rwlock futex r = 0 (0xffffffff8298b290) #0 witness_lock+0x44d #1 sys_futex+0x5c sys/kern/sys_futex.c:107 #2 syscall+0x4c2 mi_syscall sys/sys/syscall_mi.h:101 [inline] #2 syscall+0x4c2 sys/arch/amd64/amd64/trap.c:599 #3 Xsyscall+0x128 Process 86264 (syz-executor.6) thread 0xffff8000213357a0 (449118) shared rwlock vmmaplk r = 0 (0xfffffd8064dd1520) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 uvm_fault_unwire+0x31 sys/uvm/uvm_fault.c:1610 #3 sys_sysctl+0x229 sys/kern/kern_sysctl.c:255 #4 syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] #4 syscall+0x438 sys/arch/amd64/amd64/trap.c:599 #5 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82b51240) #0 witness_lock+0x44d #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x3bb sys/kern/sched_bsd.c:415 #3 sleep_finish+0x180 sys/kern/kern_synch.c:417 #4 rw_enter+0x35a sys/kern/kern_rwlock.c:286 #5 uvm_fault_unwire+0x31 sys/uvm/uvm_fault.c:1610 #6 sys_sysctl+0x229 sys/kern/kern_sysctl.c:255 #7 syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] #7 syscall+0x438 sys/arch/amd64/amd64/trap.c:599 #8 Xsyscall+0x128 exclusive rwlock sysctllk r = 0 (0xffffffff82994410) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 sys_sysctl+0x1b3 sys/kern/kern_sysctl.c:234 #3 syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] #3 syscall+0x438 sys/arch/amd64/amd64/trap.c:599 #4 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10204 6481K 6879K 78643K 14828 0 pcb 17 18K 28K 78643K 8441 0 rtable 187 9K 9K 78643K 1493 0 ifaddr 75 17K 19K 78643K 447 0 sysctl 3 1K 1K 78643K 6 0 counters 56 35K 36K 78643K 394 0 ioctlops 0 0K 4K 78643K 2333 0 iov 0 0K 28K 78643K 325 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1432 90K 90K 78643K 3839 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 28 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 1135 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 18 65K 93K 78643K 3313 0 sigio 0 0K 0K 78643K 472 0 proc 72 91K 127K 78643K 1144 0 subproc 104 6K 6K 78643K 299 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 143 0 in_multi 73 4K 6K 78643K 587 0 ether_multi 1 0K 0K 78643K 25 0 mrt 1 0K 0K 78643K 15 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 73 334K 334K 78643K 73 0 exec 0 0K 1K 78643K 947 0 pfkey data 0 0K 0K 78643K 7 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 8 62K 64K 78643K 10 0 UVM amap 422 333K 333K 78643K 24802 0 UVM aobj 36 2K 2K 78643K 36 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 66 0 NDP 12 0K 1K 78643K 169 0 temp 137 4694K 5718K 78643K 32120 0 kqueue 12 18K 27K 78643K 277 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> 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 120 434 0 431 8 7 1 5 0 8 0 rtentry 112 472 0 392 4 0 4 4 0 8 0 unpcb 144 1314 0 1299 13 10 3 6 0 8 2 syncache 296 16 0 16 4 4 0 1 0 8 0 tcpqe 32 169 0 169 4 4 0 1 0 8 0 tcpcb 776 465 0 461 22 21 1 8 0 8 0 arp 120 48 0 34 1 0 1 1 0 8 0 inpcb 368 10349 0 10337 132 120 12 28 0 8 10 nd6 48 111 0 93 1 0 1 1 0 8 0 pkpcb 40 17 0 17 3 3 0 1 0 8 0 kcovpl 48 23 0 15 1 0 1 1 0 8 0 ppxss 1256 120 0 120 6 6 0 1 0 8 0 pppxif 1448 33 0 33 5 5 0 1 0 8 0 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 7 0 7 2 2 0 1 0 482 0 pffrnode 88 7 0 7 2 2 0 1 0 8 0 pffrent 40 21 0 21 2 2 0 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 pfanchor 1280 12 0 4 1 0 1 1 0 8 0 pfstitem 24 145 0 115 1 0 1 1 0 8 0 pfstkey 120 145 0 111 2 0 2 2 0 8 0 pfstate 384 144 0 114 8 3 5 5 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 rttmr 136 3 0 3 1 1 0 1 0 8 0 art_heap8 4096 2 0 1 2 1 1 2 0 8 0 art_heap4 256 2442 0 2077 33 10 23 29 0 8 0 art_table 32 2444 0 2078 4 0 4 4 0 8 0 art_node 16 471 0 401 1 0 1 1 0 8 0 sysvmsgpl 40 9 0 4 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 1130 0 1120 1 0 1 1 0 8 0 shmpl 112 33 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 5713 0 4262 92 0 92 92 0 8 0 ffsino 272 5713 0 4262 98 0 98 98 0 8 0 nchpl 144 10058 0 8412 63 0 63 63 0 8 0 rtmask 32 1 0 1 1 1 0 1 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 36899 0 36899 3 2 1 2 0 8 1 percpumem 16 209 0 169 1 0 1 1 0 8 0 vcpupl 2048 17 0 0 3 0 3 3 0 8 0 vmpool 568 23 0 6 2 0 2 2 0 8 0 kstatmem 264 162 0 138 2 0 2 2 0 8 0 scsiplug 72 4 0 4 1 1 0 1 0 8 0 scxspl 216 31798 0 31798 15 14 1 8 0 8 1 plimitpl 152 259 0 243 1 0 1 1 0 8 0 sigapl 424 3635 0 3565 11 3 8 8 0 8 0 futexpl 64 31316 0 31310 2 1 1 1 0 8 0 knotepl 120 331 0 0 9 0 9 9 0 8 0 kqueuepl 216 869 0 861 15 14 1 5 0 8 0 pipepl 320 1114 0 1084 29 23 6 8 0 8 3 fdescpl 496 3576 0 3545 6 2 4 5 0 8 0 filepl 152 30079 0 29825 59 44 15 25 0 8 4 lockfpl 104 662 0 660 2 1 1 2 0 8 0 lockfspl 48 292 0 290 1 0 1 1 0 8 0 sessionpl 144 42 0 25 1 0 1 1 0 8 0 pgrppl 48 51 0 34 1 0 1 1 0 8 0 ucredpl 104 2576 0 2564 1 0 1 1 0 8 0 zombiepl 144 3566 0 3565 1 0 1 1 0 8 0 processpl 1072 3635 0 3565 5 0 5 5 0 8 0 procpl 672 9673 0 9575 12 3 9 9 0 8 0 srpgc 96 29 0 29 4 4 0 1 0 8 0 sosppl 168 17 0 17 4 4 0 1 0 8 0 sockpl 488 12128 0 12098 266 247 19 41 0 8 15 mcl64k 65536 15 0 0 2 0 2 2 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 0 8 0 mcl12k 12288 25 0 0 2 0 2 2 0 8 0 mcl9k 9216 11 0 0 1 0 1 1 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 25 0 0 4 1 3 3 0 8 0 mcl2k2 2112 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 385 0 0 48 1 47 48 0 8 0 mtagpl 96 326 0 0 8 0 8 8 0 8 0 mbufpl 256 17295 0 0 1079 0 1079 1079 0 8 0 bufpl 288 8835 0 2506 453 0 453 453 0 8 0 anonpl 24 759470 0 741405 181 59 122 174 0 186 0 amapchunkpl 152 70852 0 70025 66 32 34 61 0 158 0 amappl16 200 6545 0 6008 33 4 29 32 0 8 0 amappl15 192 16 0 15 1 0 1 1 0 8 0 amappl14 184 215 0 199 2 1 1 2 0 8 0 amappl13 176 5 0 5 2 2 0 1 0 8 0 amappl12 168 607 0 604 1 0 1 1 0 8 0 amappl11 160 61 0 46 1 0 1 1 0 8 0 amappl10 152 42 0 32 1 0 1 1 0 8 0 amappl9 144 968 0 968 5 4 1 1 0 8 1 amappl8 136 321 0 233 4 0 4 4 0 8 0 amappl7 128 194 0 168 2 0 2 2 0 8 0 amappl6 120 239 0 226 1 0 1 1 0 8 0 amappl5 112 237 0 228 1 0 1 1 0 8 0 amappl4 104 754 0 713 5 3 2 2 0 8 0 amappl3 96 10276 0 10213 2 0 2 2 0 8 0 amappl2 88 4082 0 4002 3 1 2 3 0 8 0 amappl1 80 83670 0 82845 23 5 18 23 0 8 0 amappl 88 24019 0 23784 7 1 6 6 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 35 0 0 1 0 1 1 0 8 0 uaddrrnd 24 3599 0 3551 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3599 0 3551 1 0 1 1 0 8 0 vmmpekpl 168 34368 0 34297 4 0 4 4 0 8 0 vmmpepl 168 337665 0 334595 193 56 137 158 0 357 3 vmsppl 368 3598 0 3551 6 1 5 5 0 8 0 rwobjpl 56 95075 0 87266 114 3 111 111 0 8 0 pdppl 4096 7205 0 7119 298 212 86 86 0 8 0 pvpl 32 1561172 0 1536983 346 142 204 307 0 265 0 pmappl 248 3598 0 3551 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 2271 0 356 55 0 55 55 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82652636) at panic+0x177 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd8064dd1478,20000000,20001000) at uvm_fault_unwire_locked+0x321 sys/uvm/uvm_fault.c:1651 uvm_fault_unwire(fffffd8064dd1478,20000000,20001000) at uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1611 sys_sysctl(ffff8000213357a0,ffff800022d6ab88,ffff800022d6abd0) at sys_sysctl+0x229 sys/kern/kern_sysctl.c:255 syscall(ffff800022d6ac50) at syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff800022d6ac50) at syscall+0x438 sys/arch/amd64/amd64/trap.c:599 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa8044fa0fa0, count: -7 ddb{0}> machine ddbcpu 1