panic: uvm_fault_unwire_locked: address not in map Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *384978 26243 32767 0x10 0x4000000 0 syz-executor 14800 93459 32767 0x10 0 1 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830bb062) at panic+0x1e5 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd80574aea50,20001000,20002000) at uvm_fault_unwire_locked+0x487 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd80574aea50,20001000,20002000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1623 sysctl_vsunlock(20001540,210) at sysctl_vsunlock+0x7b sys/kern/kern_sysctl.c:204 net_sysctl(ffff8000344d2ff4,3,20001540,ffff8000344d3028,0,0,432e1cfa562cb549) at net_sysctl+0x69a sys/kern/uipc_domain.c:251 sys_sysctl(ffff8000fffea028,ffff8000344d3160,ffff8000344d30b0) at sys_sysctl+0x422 syscall(ffff8000344d3160) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff8000344d3160) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x20cd35c7e80, 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(ffffffff830bb062) at panic+0x1e5 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd80574aea50,20001000,20002000) at uvm_fault_unwire_locked+0x487 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd80574aea50,20001000,20002000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1623 sysctl_vsunlock(20001540,210) at sysctl_vsunlock+0x7b sys/kern/kern_sysctl.c:204 net_sysctl(ffff8000344d2ff4,3,20001540,ffff8000344d3028,0,0,432e1cfa562cb549) at net_sysctl+0x69a sys/kern/uipc_domain.c:251 sys_sysctl(ffff8000fffea028,ffff8000344d3160,ffff8000344d30b0) at sys_sysctl+0x422 syscall(ffff8000344d3160) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff8000344d3160) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x20cd35c7e80, count: -9 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff8000344d2d70 rbx 0xffffffff83452d87 cpu_info_full_primary+0x2d87 rdx 0 rcx 0xffff8000fffea028 rax 0xffffffff83451ff0 cpu_info_full_primary+0x1ff0 r8 0 r9 0x8080808080808080 r10 0xb89dd2bede335369 r11 0xba16d6b826e77883 r12 0xffffffff83452b88 cpu_info_full_primary+0x2b88 r13 0 r14 0 r15 0x1 rip 0xffffffff82216ee5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff8000344d2d60 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=384978 pid=26243 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=0xffff8000fffeacd0,0xffff8000fffeb478 process=0xffff80002a09faf8 user=0xffff8000344ce000, vmspace=0xfffffd80574aea50 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 26243 243170 45600 32767 2 0x10 syz-executor *26243 384978 45600 32767 7 0x4000010 syz-executor 26243 232852 45600 32767 2 0x4000010 syz-executor 26243 486004 45600 32767 2 0x4000010 syz-executor 93459 14800 6595 32767 7 0x10 syz-executor 93459 172539 6595 32767 3 0x4000090 ttyout syz-executor 93459 193699 6595 32767 3 0x4000090 fsleep syz-executor 93459 298208 6595 32767 3 0x4000090 fsleep syz-executor 25329 126823 13630 32767 3 0x90 nanoslp syz-executor 25329 287258 13630 32767 3 0x4000090 kqsel syz-executor 25329 7349 13630 32767 3 0x4000090 fsleep syz-executor 48113 509451 94911 32767 3 0x90 nanoslp syz-executor 94911 230208 25400 0 3 0x82 wait syz-executor 88528 62869 40002 32767 3 0x90 nanoslp syz-executor 40002 411451 25400 0 3 0x82 wait syz-executor 49980 306052 77895 32767 3 0x90 nanoslp syz-executor 77895 520752 25400 0 3 0x82 wait syz-executor 6595 30524 23103 32767 3 0x90 nanoslp syz-executor 23103 172248 25400 0 3 0x82 wait syz-executor 45600 224051 19204 32767 3 0x90 nanoslp syz-executor 19204 461210 25400 0 3 0x82 wait syz-executor 71232 95557 96144 32767 3 0x90 wait syz-executor 96144 107489 25400 0 3 0x82 wait syz-executor 13630 505910 45245 32767 3 0x90 nanoslp syz-executor 45245 154467 25400 0 3 0x82 wait syz-executor 69603 363993 71793 32767 3 0x90 wait syz-executor 71793 22743 25400 0 3 0x82 wait syz-executor 21682 14616 58829 0 3 0x100082 sbwait arp 58829 315756 53485 0 3 0x10008a sigsusp sh 53485 34554 1 0 3 0x80 wait syz-executor 91295 227618 0 0 3 0x14200 bored sosplice 25400 56187 71134 0 3 0x82 kqread syz-executor 71134 271100 99441 0 3 0x10008a sigsusp ksh 99441 99597 60241 0 3 0x98 kqread sshd-session 60241 26629 40592 0 3 0x92 kqread sshd-session 75989 513604 1 0 3 0x100083 ttyin getty 40592 36530 1 0 3 0x88 kqread sshd 97455 291056 34668 73 3 0x1100090 kqread syslogd 34668 173323 1 0 3 0x100082 sbwait syslogd 25830 165861 1 0 3 0x100080 kqread resolvd 72456 162299 50940 77 3 0x100092 kqread dhcpleased 12933 224155 50940 77 3 0x100092 kqread dhcpleased 50940 325831 1 0 3 0x80 kqread dhcpleased 20105 5535 0 0 3 0x14200 bored smr 70650 308552 0 0 3 0x14200 pgzero zerothread 88750 390350 0 0 3 0x14200 aiodoned aiodoned 58482 295115 0 0 3 0x14200 syncer update 4176 254035 0 0 3 0x14200 cleaner cleaner 425 395234 0 0 3 0x14200 reaper reaper 32122 152476 0 0 3 0x14200 pgdaemon pagedaemon 11733 152801 0 0 3 0x14200 bored viomb 10736 350153 0 0 3 0x40014200 acpi0 acpi0 5179 124324 0 0 3 0x40014200 idle1 79913 142566 0 0 3 0x14200 bored softnet3 21833 466609 0 0 3 0x14200 bored softnet2 78569 125476 0 0 3 0x14200 bored softnet1 9698 29025 0 0 3 0x14200 bored softnet0 54686 389082 0 0 3 0x14200 bored systqmp 15646 172329 0 0 3 0x14200 bored systq 27602 318648 0 0 3 0x14200 tmoslp softclockmp 40563 86904 0 0 2 0x40014200 softclock 97658 241495 0 0 3 0x40014200 idle0 1 320122 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 26243 (syz-executor) thread 0xffff8000fffea028 (384978) shared rwlock vmmaplk r = 0 (0xfffffd80574aeb40) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #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 (0xffffffff834fe560) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #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 (0xffffffff834bd090) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #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 10235 14126K 14131K 166960K 14009 0 pcb 17 20K 22K 166960K 25 0 rtable 238 6K 7K 166960K 31675 0 pf 31 16K 16K 166960K 1838 0 ifaddr 42 15K 19K 166960K 3636 0 ifgroup 50 2K 2K 166960K 3653 0 sysctl 4 1K 5K 166960K 53 0 counters 64 36K 36K 166960K 1860 0 ioctlops 0 0K 4K 166960K 2193 0 iov 0 0K 36K 166960K 5995 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1470 92K 92K 166960K 27607 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 13K 166960K 1194 0 VM map 2 1K 1K 166960K 2 0 sem 12 1K 1K 166960K 13 0 dirhash 30 5K 6K 166960K 1827 0 ACPI 1690 195K 286K 166960K 12418 0 file desc 29 109K 169K 166960K 64194 0 sigio 0 0K 0K 166960K 2287 0 proc 58 79K 176K 166960K 31445 0 subproc 117 7K 13K 166960K 13611 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 16778 0 in_multi 99 7K 7K 166960K 12419 0 ether_multi 1 0K 0K 166960K 373 0 mrt 1 0K 0K 166960K 16 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 349 1553K 1553K 166960K 349 0 exec 0 0K 1K 166960K 23556 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 325 85K 142K 166960K 558483 0 UVM aobj 131 7K 7K 166960K 145 0 pinsyscall 51 102K 134K 166960K 91697 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 4686 0 NDP 11 0K 2K 166960K 2711 0 temp 80 6824K 6952K 166960K 457754 0 kqueue 13 20K 40K 166960K 10497 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 9587 0 9583 64 63 1 5 0 8 0 rtentry 112 10618 0 10506 16 12 4 4 0 8 0 unpcb 144 65512 0 65494 239 232 7 11 0 8 6 syncache 336 1043 0 1043 38 37 1 1 0 8 1 tcpqe 32 408 0 408 53 53 0 1 0 8 0 tcpcb 808 43126 0 43079 384 375 9 20 0 8 3 arp 120 1845 0 1827 1 0 1 1 0 8 0 ipq 40 377 0 371 6 5 1 1 0 8 0 ipqe 40 6359 0 6351 6 5 1 1 0 8 0 inpcb 336 98544 0 98493 423 412 11 20 0 8 4 ip6q 72 18 0 18 16 15 1 1 0 8 1 ip6af 40 36 0 36 16 15 1 1 0 8 1 nd6 136 3339 0 3313 12 10 2 2 0 8 0 kcovpl 48 1047 0 1038 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 42988 0 42522 227 196 31 33 0 8 0 art_table 32 42989 0 42522 15 11 4 5 0 8 0 art_node 16 10617 0 10515 1 0 1 1 0 8 0 sysvmsgpl 40 18 0 14 1 0 1 1 0 8 0 semapl 112 11 0 1 1 0 1 1 0 8 0 shmpl 112 142 0 14 4 0 4 4 0 8 0 dirhash 1024 1255 0 1213 12 6 6 6 0 8 0 dino2pl 256 87603 0 82510 321 2 319 319 0 8 0 ffsino 272 87603 0 82510 341 1 340 340 0 8 0 nchpl 144 158728 0 155536 119 0 119 119 0 8 0 uvmvnodes 80 12049 0 0 246 0 246 246 0 8 0 vnodes 216 12049 0 0 670 0 670 670 0 8 0 namei 1024 685610 0 685610 56 55 1 2 0 8 1 percpumem 16 944 0 898 1 0 1 1 0 8 0 kstatmem 264 1818 0 1796 2 0 2 2 0 8 0 scxspl 216 613099 0 613099 152 150 2 8 1 8 2 plimitpl 152 21344 0 21315 2 0 2 2 0 8 0 sigapl 424 63040 0 62980 26 17 9 9 0 8 0 futexpl 64 771247 0 771244 25 24 1 1 0 8 0 knotepl 120 2268 0 0 26 1 25 25 0 8 0 kqueuepl 216 22969 0 22959 208 207 1 8 0 8 0 pipepl 320 14193 0 14163 170 166 4 13 0 8 0 fdescpl 496 63021 0 62980 24 18 6 8 0 8 0 filepl 152 483196 0 482922 260 244 16 24 0 8 2 lockfpl 104 17372 0 17370 10 9 1 2 0 8 0 lockfspl 48 4949 0 4947 1 0 1 1 0 8 0 sessionpl 144 1563 0 1546 1 0 1 1 0 8 0 pgrppl 48 4048 0 4023 1 0 1 1 0 8 0 ucredpl 104 101472 0 101453 1 0 1 1 0 8 0 zombiepl 144 62985 0 62980 1 0 1 1 0 8 0 processpl 1160 63040 0 62980 14 9 5 6 0 8 0 procpl 648 149825 0 149757 15 8 7 7 0 8 0 srpgc 96 30 0 30 15 15 0 1 0 8 0 sosppl 168 670 0 665 22 21 1 1 0 8 0 sockpl 664 175234 0 175157 579 560 19 30 0 8 7 mcl64k 65536 98 0 0 4 1 3 3 0 8 0 mcl16k 16384 6 0 0 1 0 1 1 0 8 0 mcl12k 12288 5 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 33 0 0 3 0 3 3 0 8 0 mcl4k 4096 9 0 0 2 0 2 2 0 8 0 mcl2k2 2112 38 0 0 3 0 3 3 0 8 0 mcl2k 2048 1051 0 0 28 7 21 28 0 8 0 mtagpl 96 110 0 0 2 0 2 2 0 8 0 mbufpl 256 7525 0 0 419 0 419 419 0 8 0 bufpl 280 105842 0 93792 862 0 862 862 0 8 0 anonpl 24 7531650 0 7515293 524 390 134 148 0 185 5 amapchunkpl 152 1812752 0 1811781 436 397 39 54 0 158 0 amappl16 200 172165 0 171611 535 491 44 53 0 8 6 amappl15 192 28 0 28 18 18 0 1 0 8 0 amappl14 184 3211 0 3200 1 0 1 1 0 8 0 amappl13 176 88 0 87 13 12 1 1 0 8 0 amappl12 168 78658 0 78615 18 15 3 3 0 8 0 amappl11 160 52 0 41 1 0 1 1 0 8 0 amappl10 152 23 0 22 3 2 1 1 0 8 0 amappl9 144 159 0 158 2 1 1 1 0 8 0 amappl8 136 32 0 30 1 0 1 1 0 8 0 amappl7 128 2544 0 2532 1 0 1 1 0 8 0 amappl6 120 9124 0 9120 1 0 1 1 0 8 0 amappl5 112 4363 0 4353 1 0 1 1 0 8 0 amappl4 104 5638 0 5618 1 0 1 1 0 8 0 amappl3 96 376293 0 376130 9 4 5 5 0 8 0 amappl2 88 20926 0 20858 8 6 2 3 0 8 0 amappl1 80 416823 0 416250 51 35 16 19 0 8 0 amappl 88 543289 0 543023 10 3 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 72 144 0 14 3 0 3 3 0 8 0 uaddrrnd 24 63021 0 62980 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 63021 0 62980 1 0 1 1 0 8 0 vmmpekpl 168 577306 0 577249 7 2 5 5 0 8 0 vmmpepl 168 4143574 0 4140796 575 424 151 163 0 357 10 vmsppl 440 63020 0 62980 19 14 5 7 0 8 0 rwobjpl 56 1056110 0 1042400 253 56 197 198 0 8 0 pdppl 4096 126049 0 125960 1998 1907 91 119 0 8 2 pvpl 32 46800 0 0 371 0 371 371 0 265 0 pmappl 248 63020 0 62980 14 10 4 4 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 4261 0 3001 37 0 37 37 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(ffffffff830bb062) at panic+0x1e5 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd80574aea50,20001000,20002000) at uvm_fault_unwire_locked+0x487 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd80574aea50,20001000,20002000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1623 sysctl_vsunlock(20001540,210) at sysctl_vsunlock+0x7b sys/kern/kern_sysctl.c:204 net_sysctl(ffff8000344d2ff4,3,20001540,ffff8000344d3028,0,0,432e1cfa562cb549) at net_sysctl+0x69a sys/kern/uipc_domain.c:251 sys_sysctl(ffff8000fffea028,ffff8000344d3160,ffff8000344d30b0) at sys_sysctl+0x422 syscall(ffff8000344d3160) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff8000344d3160) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x20cd35c7e80, count: -9 ddb{0}> machine ddbcpu 1