panic: uvm_fault_unwire_locked: address not in map Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 59226 51839 32767 0x10 0x4000000 0 syz-executor 229530 429 0 0x2 0 1 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830bbae4) at panic+0x1e5 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd805989bdd0,20000000,20001000) at uvm_fault_unwire_locked+0x487 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd805989bdd0,20000000,20001000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1623 sysctl_vsunlock(20000480,4) at sysctl_vsunlock+0x7b sys/kern/kern_sysctl.c:204 net_sysctl(ffff80002b560174,3,20000480,ffff80002b5601a8,0,0,fd1ec09a6cc2e875) at net_sysctl+0x69a sys/kern/uipc_domain.c:251 sys_sysctl(ffff80002fd73230,ffff80002b5602e0,ffff80002b560230) at sys_sysctl+0x422 syscall(ffff80002b5602e0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002b5602e0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ef321523e0, 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{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+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830bbae4) at panic+0x1e5 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd805989bdd0,20000000,20001000) at uvm_fault_unwire_locked+0x487 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd805989bdd0,20000000,20001000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1623 sysctl_vsunlock(20000480,4) at sysctl_vsunlock+0x7b sys/kern/kern_sysctl.c:204 net_sysctl(ffff80002b560174,3,20000480,ffff80002b5601a8,0,0,fd1ec09a6cc2e875) at net_sysctl+0x69a sys/kern/uipc_domain.c:251 sys_sysctl(ffff80002fd73230,ffff80002b5602e0,ffff80002b560230) at sys_sysctl+0x422 syscall(ffff80002b5602e0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002b5602e0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ef321523e0, count: -9 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002b55fef0 rbx 0xffffffff8343bdcf cpu_info_full_primary+0x2dcf rdx 0 rcx 0xffff80002fd73230 rax 0xffffffff8343aff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x6b2c639b39269d0c r11 0x39c13a718895368f r12 0xffffffff8343bbd0 cpu_info_full_primary+0x2bd0 r13 0 r14 0 r15 0x1 rip 0xffffffff822b4aa5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002b55fee0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=59226 pid=51839 tcnt=4 stat=onproc flags process=10 proc=4000000 runpri=36, usrpri=50, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002fd734b8,0xffff80002fd739d8 process=0xffff80002fd77b00 user=0xffff80002b55b000, vmspace=0xfffffd805989bdd0 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 51839 247193 83470 32767 2 0x10 syz-executor *51839 59226 83470 32767 7 0x4000010 syz-executor 51839 427969 83470 32767 3 0x4000090 fsleep syz-executor 51839 148946 83470 32767 3 0x4000090 fsleep syz-executor 58192 20290 88054 32767 3 0x90 nanoslp syz-executor 58192 10589 88054 32767 3 0x4000090 fsleep syz-executor 58192 73344 88054 32767 3 0x4000090 fsleep syz-executor 58192 495380 88054 32767 3 0x4000090 fsleep syz-executor 87496 237070 43349 32767 3 0x90 nanoslp syz-executor 87496 129984 43349 32767 3 0x4000090 ttyretype syz-executor 87496 56325 43349 32767 3 0x4000090 fsleep syz-executor 18530 349889 9338 32767 3 0x90 nanoslp syz-executor 18530 441108 9338 32767 3 0x4000090 pipewr syz-executor 18997 98678 84503 32767 3 0x90 nanoslp syz-executor 84503 274245 429 0 3 0x82 wait syz-executor 60771 346738 11861 32767 3 0x90 wait syz-executor 11861 291138 429 0 3 0x82 wait syz-executor 9338 218288 12889 32767 3 0x90 nanoslp syz-executor 12889 262504 429 0 3 0x82 wait syz-executor 43349 269319 44711 32767 3 0x90 nanoslp syz-executor 44711 145702 429 0 3 0x82 wait syz-executor 83470 275898 20586 32767 3 0x90 nanoslp syz-executor 20586 253870 429 0 3 0x82 wait syz-executor 88054 42343 59772 32767 3 0x90 nanoslp syz-executor 59772 290538 429 0 3 0x82 wait syz-executor 3976 429273 84358 32767 3 0x90 wait syz-executor 84358 101908 429 0 3 0x82 wait syz-executor 38303 395603 42338 32767 3 0x90 nanoslp syz-executor 42338 235644 429 0 3 0x82 wait syz-executor 37788 474844 0 0 3 0x14200 bored sosplice 429 229530 90765 0 7 0x2 syz-executor 90765 261318 10818 0 3 0x10008a sigsusp ksh 10818 204490 64055 0 3 0x98 kqread sshd-session 64055 292485 28825 0 3 0x92 kqread sshd-session 61068 282711 1 0 3 0x100083 ttyin getty 28825 251705 1 0 3 0x88 kqread sshd 26026 428782 63109 73 3 0x1100090 kqread syslogd 63109 461127 1 0 3 0x100082 sbwait syslogd 69962 355797 1 0 3 0x100080 kqread resolvd 67843 318710 68882 77 3 0x100092 kqread dhcpleased 63679 516664 68882 77 3 0x100092 kqread dhcpleased 68882 443573 1 0 3 0x80 kqread dhcpleased 81285 409174 0 0 3 0x14200 bored smr 12489 273042 0 0 3 0x14200 pgzero zerothread 98280 207656 0 0 3 0x14200 aiodoned aiodoned 50061 398553 0 0 3 0x14200 syncer update 70096 387800 0 0 3 0x14200 cleaner cleaner 96686 306544 0 0 3 0x14200 reaper reaper 62353 430958 0 0 3 0x14200 pgdaemon pagedaemon 99565 500888 0 0 3 0x14200 bored viomb 57250 142378 0 0 3 0x40014200 acpi0 acpi0 90856 94384 0 0 3 0x40014200 idle1 63327 351712 0 0 3 0x14200 bored softnet3 37086 419220 0 0 3 0x14200 bored softnet2 91132 207342 0 0 3 0x14200 bored softnet1 43816 388070 0 0 3 0x14200 bored softnet0 97074 264059 0 0 3 0x14200 bored systqmp 64764 163530 0 0 3 0x14200 bored systq 26819 55455 0 0 3 0x14200 tmoslp softclockmp 3943 83675 0 0 3 0x40014200 tmoslp softclock 5536 35821 0 0 3 0x40014200 idle0 1 42990 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 51839 (syz-executor) thread 0xffff80002fd73230 (59226) shared rwlock vmmaplk r = 0 (0xfffffd805989bec0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 uvm_fault_unwire+0x3e sys/uvm/uvm_fault.c:1622 #3 sysctl_vsunlock+0x7b sys/kern/kern_sysctl.c:204 #4 net_sysctl+0x69a sys/kern/uipc_domain.c:251 #5 sys_sysctl+0x422 #6 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #6 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83582c48) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 __mp_acquire_count+0x58 #2 mi_switch+0x658 sys/kern/sched_bsd.c:460 #3 sleep_finish+0x219 sys/kern/kern_synch.c:416 #4 rw_enter+0x348 sys/kern/kern_rwlock.c:285 #5 uvm_fault_unwire+0x3e sys/uvm/uvm_fault.c:1622 #6 sysctl_vsunlock+0x7b sys/kern/kern_sysctl.c:204 #7 net_sysctl+0x69a sys/kern/uipc_domain.c:251 #8 sys_sysctl+0x422 #9 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #9 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #10 Xsyscall+0x128 exclusive rwlock sysctllk r = 0 (0xffffffff834344e0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 sysctl_vslock+0x45 sys/kern/kern_sysctl.c:176 #3 net_sysctl+0x5a1 sys/kern/uipc_domain.c:245 #4 sys_sysctl+0x422 #5 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #5 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #6 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10244 14127K 14131K 166960K 12752 0 pcb 17 20K 22K 166960K 25 0 rtable 248 7K 7K 166960K 16244 0 pf 31 16K 16K 166960K 1001 0 ifaddr 42 11K 11K 166960K 1957 0 ifgroup 50 2K 2K 166960K 1972 0 sysctl 4 1K 5K 166960K 21 0 counters 64 36K 36K 166960K 1016 0 ioctlops 0 0K 2K 166960K 1060 0 iov 0 0K 48K 166960K 1820 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1469 92K 92K 166960K 12578 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 13K 166960K 364 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 859 0 dirhash 18 3K 4K 166960K 462 0 ACPI 1690 195K 286K 166960K 12418 0 file desc 25 93K 169K 166960K 24791 0 sigio 1 0K 0K 166960K 588 0 proc 58 79K 176K 166960K 15791 0 subproc 104 6K 13K 166960K 7878 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 5161 0 in_multi 99 7K 7K 166960K 6224 0 ether_multi 1 0K 0K 166960K 139 0 mrt 1 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 403 1791K 1791K 166960K 403 0 exec 0 0K 1K 166960K 9967 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 280 76K 141K 166960K 204792 0 UVM aobj 131 4K 4K 166960K 146 0 pinsyscall 46 92K 132K 166960K 39005 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 1652 0 NDP 11 0K 2K 166960K 1454 0 temp 75 6824K 6952K 166960K 162226 0 kqueue 14 22K 34K 166960K 3600 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 3905 0 3899 24 23 1 3 0 8 0 rtentry 112 5576 0 5459 17 13 4 4 0 8 0 unpcb 144 21083 0 21067 130 127 3 10 0 8 1 syncache 336 365 0 365 34 33 1 1 0 8 1 tcpqe 32 148 0 148 28 27 1 1 0 8 1 tcpcb 808 15012 0 14966 194 180 14 18 0 8 8 arp 120 983 0 965 1 0 1 1 0 8 0 ipq 40 117 0 113 7 6 1 1 0 8 0 ipqe 40 1637 0 1631 7 6 1 1 0 8 0 inpcb 336 35145 0 35093 241 225 16 21 0 8 7 ip6q 72 3 0 3 3 3 0 1 0 8 0 ip6af 40 6 0 6 3 3 0 1 0 8 0 nd6 136 1669 0 1638 6 4 2 2 0 8 0 kcovpl 48 606 0 598 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 22638 0 22140 227 195 32 32 0 8 0 art_table 32 22639 0 22140 12 7 5 5 0 8 0 art_node 16 5575 0 5468 1 0 1 1 0 8 0 sysvmsgpl 40 29 0 14 1 0 1 1 0 8 0 semapl 112 857 0 847 1 0 1 1 0 8 0 shmpl 112 143 0 15 4 0 4 4 0 8 0 dirhash 1024 324 0 299 11 7 4 4 0 8 0 dino2pl 256 29559 0 26452 195 0 195 195 0 8 0 ffsino 272 29559 0 26452 208 0 208 208 0 8 0 nchpl 144 53837 0 50971 108 1 107 107 0 8 0 uvmvnodes 80 10158 0 0 208 0 208 208 0 8 0 vnodes 216 10158 0 0 565 0 565 565 0 8 0 namei 1024 247690 0 247690 56 55 1 2 0 8 1 percpumem 16 522 0 476 1 0 1 1 0 8 0 kstatmem 264 974 0 952 2 0 2 2 0 8 0 scxspl 216 300714 0 300714 75 73 2 8 1 8 2 plimitpl 152 7832 0 7806 2 0 2 2 0 8 0 sigapl 424 24038 0 23981 21 13 8 9 0 8 0 futexpl 64 260838 0 260832 30 29 1 1 0 8 0 knotepl 120 1810 0 0 27 1 26 26 0 8 0 kqueuepl 216 7602 0 7592 67 62 5 10 0 8 4 pipepl 320 5400 0 5371 80 72 8 13 0 8 4 fdescpl 496 24019 0 23982 22 16 6 8 0 8 0 filepl 152 167944 0 167647 164 145 19 24 0 8 4 lockfpl 104 6575 0 6572 10 8 2 3 0 8 1 lockfspl 48 1736 0 1733 1 0 1 1 0 8 0 sessionpl 144 669 0 653 1 0 1 1 0 8 0 pgrppl 48 1628 0 1604 1 0 1 1 0 8 0 ucredpl 104 32049 0 32030 1 0 1 1 0 8 0 zombiepl 144 23985 0 23981 1 0 1 1 0 8 0 processpl 1160 24038 0 23981 16 11 5 6 0 8 0 procpl 648 53332 0 53266 18 11 7 7 0 8 0 srpgc 96 32 0 32 12 12 0 1 0 8 0 sosppl 168 268 0 267 27 26 1 1 0 8 0 sockpl 664 60586 0 60512 421 403 18 38 0 8 4 mcl64k 65536 46 0 0 3 0 3 3 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 25 0 0 4 1 3 3 0 8 0 mcl4k 4096 4 0 0 1 0 1 1 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 630 0 0 30 8 22 30 0 8 0 mtagpl 96 7 0 0 1 0 1 1 0 8 0 mbufpl 256 2108 0 0 81 0 81 81 0 8 0 bufpl 280 39698 0 29540 726 0 726 726 0 8 0 anonpl 24 2884977 0 2868556 394 274 120 120 0 185 20 amapchunkpl 152 670973 0 670197 241 208 33 50 0 158 0 amappl16 200 57780 0 57122 343 297 46 46 0 8 11 amappl15 192 15 0 15 7 7 0 1 0 8 0 amappl14 184 1415 0 1404 1 0 1 1 0 8 0 amappl13 176 43 0 43 23 23 0 1 0 8 0 amappl12 168 32469 0 32431 10 8 2 3 0 8 0 amappl11 160 50 0 40 1 0 1 1 0 8 0 amappl10 152 18 0 17 1 0 1 1 0 8 0 amappl9 144 150 0 150 1 1 0 1 0 8 0 amappl8 136 23 0 21 1 0 1 1 0 8 0 amappl7 128 1226 0 1215 1 0 1 1 0 8 0 amappl6 120 4917 0 4915 1 0 1 1 0 8 0 amappl5 112 2202 0 2193 1 0 1 1 0 8 0 amappl4 104 2396 0 2377 1 0 1 1 0 8 0 amappl3 96 134906 0 134765 4 0 4 4 0 8 0 amappl2 88 9387 0 9322 3 0 3 3 0 8 0 amappl1 80 153047 0 152509 27 13 14 19 0 8 0 amappl 88 198524 0 198300 10 4 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 72 145 0 15 3 0 3 3 0 8 0 uaddrrnd 24 24019 0 23982 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 24019 0 23982 1 0 1 1 0 8 0 vmmpekpl 168 209123 0 209069 7 3 4 5 0 8 0 vmmpepl 168 1505020 0 1502340 366 238 128 132 0 357 9 vmsppl 440 24018 0 23982 14 9 5 7 0 8 0 rwobjpl 56 396484 0 384668 198 28 170 170 0 8 3 pdppl 4096 48045 0 47964 1451 1364 87 123 0 8 6 pvpl 32 50163 0 0 395 0 395 395 0 265 0 pmappl 248 24018 0 23982 19 16 3 4 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 2741 0 2070 20 0 20 20 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830bbae4) at panic+0x1e5 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd805989bdd0,20000000,20001000) at uvm_fault_unwire_locked+0x487 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd805989bdd0,20000000,20001000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1623 sysctl_vsunlock(20000480,4) at sysctl_vsunlock+0x7b sys/kern/kern_sysctl.c:204 net_sysctl(ffff80002b560174,3,20000480,ffff80002b5601a8,0,0,fd1ec09a6cc2e875) at net_sysctl+0x69a sys/kern/uipc_domain.c:251 sys_sysctl(ffff80002fd73230,ffff80002b5602e0,ffff80002b560230) at sys_sysctl+0x422 syscall(ffff80002b5602e0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002b5602e0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ef321523e0, count: -9 ddb{0}> machine ddbcpu 1