panic: uvm_fault_unwire_locked: address not in map Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *129043 91493 0 0 0x4000000 0 syz-executor 105152 93844 0 0x2 0 1 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83408738) at panic+0x1e5 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806b922908,400000002000,400000003000) at uvm_fault_unwire_locked+0x48d sys/uvm/uvm_fault.c:1739 uvm_fault_unwire(fffffd806b922908,400000002000,400000003000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1702 sysctl_vsunlock(400000002400,c6) at sysctl_vsunlock+0x7b sys/kern/kern_sysctl.c:215 sys_sysctl(ffff80003009a028,ffff80003c5a7b70,ffff80003c5a7ac0) at sys_sysctl+0x460 sys/kern/kern_sysctl.c:309 syscall(ffff80003c5a7b70) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c5a7b70) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9252f4ea50, count: 7 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:438 panic(ffffffff83408738) at panic+0x1e5 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806b922908,400000002000,400000003000) at uvm_fault_unwire_locked+0x48d sys/uvm/uvm_fault.c:1739 uvm_fault_unwire(fffffd806b922908,400000002000,400000003000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1702 sysctl_vsunlock(400000002400,c6) at sysctl_vsunlock+0x7b sys/kern/kern_sysctl.c:215 sys_sysctl(ffff80003009a028,ffff80003c5a7b70,ffff80003c5a7ac0) at sys_sysctl+0x460 sys/kern/kern_sysctl.c:309 syscall(ffff80003c5a7b70) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c5a7b70) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9252f4ea50, count: -8 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c5a7830 rbx 0xffffffff837e1dc7 cpu_info_full_primary+0x2dc7 rdx 0 rcx 0xffff80003009a028 rax 0xffffffff837e0ff0 cpu_info_full_primary+0x1ff0 r8 0 r9 0x8080808080808080 r10 0xb8304857fc33d0c5 r11 0x4ba6d411d7a9b583 r12 0xffffffff837e1bc8 cpu_info_full_primary+0x2bc8 r13 0 r14 0 r15 0x1 rip 0xffffffff818fdc85 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c5a7820 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=129043 pid=91493 tcnt=4 stat=onproc flags process=0 proc=4000000 runpri=36, usrpri=50, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003009af88,0xffff80003009b9d8 process=0xffff80003c576e18 user=0xffff80003c5a2000, vmspace=0xfffffd806b922908 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 99442 375560 59445 0 2 0 syz-executor 99442 326620 59445 0 2 0x4000000 syz-executor 91493 364389 93844 0 2 0 syz-executor 91493 190495 93844 0 2 0x4000000 syz-executor *91493 129043 93844 0 7 0x4000000 syz-executor 91493 124917 93844 0 2 0x4000000 syz-executor 63082 116783 20923 0 2 0 syz-executor 63082 14994 20923 0 3 0x4000080 fsleep syz-executor 85651 9489 6636 0 2 0 syz-executor 85651 447462 6636 0 3 0x4000080 fsleep syz-executor 85651 287134 6636 0 3 0x4000080 fsleep syz-executor 58686 284505 3334 60928 2 0x10 syz-executor 58686 374257 3334 60928 3 0x4000090 fsleep syz-executor 31060 238190 8750 0 2 0 syz-executor 31060 518351 8750 0 3 0x4000080 fsleep syz-executor 31060 427633 8750 0 3 0x4000080 fsleep syz-executor 41732 354221 0 0 3 0x14280 nfsidl nfsio 59112 52581 0 0 3 0x14280 nfsidl nfsio 62751 300344 0 0 3 0x14280 nfsidl nfsio 56836 380264 0 0 3 0x14280 nfsidl nfsio 16566 390628 0 0 3 0x14280 nfsidl nfsio 54169 412409 0 0 3 0x14280 nfsidl nfsio 28326 430057 0 0 3 0x14280 nfsidl nfsio 15292 158046 0 0 3 0x14280 nfsidl nfsio 32630 120623 0 0 3 0x14280 nfsidl nfsio 4349 306321 0 0 3 0x14280 nfsidl nfsio 16389 11220 0 0 3 0x14280 nfsidl nfsio 58150 407657 0 0 3 0x14280 nfsidl nfsio 78372 115915 0 0 3 0x14280 nfsidl nfsio 68746 24942 0 0 3 0x14280 nfsidl nfsio 14637 343148 0 0 3 0x14280 nfsidl nfsio 86211 513943 0 0 3 0x14280 nfsidl nfsio 63168 385099 0 0 3 0x14280 nfsidl nfsio 8095 362924 0 0 3 0x14280 nfsidl nfsio 63640 414855 0 0 3 0x14280 nfsidl nfsio 11906 175547 0 0 3 0x14280 nfsidl nfsio 8624 421151 0 0 3 0x14200 acct acct 36360 316798 0 0 3 0x14200 bored sosplice 93844 105152 65668 0 7 0x2 syz-executor 6636 52156 65668 0 2 0x2 syz-executor 20923 513771 65668 0 3 0x82 nanoslp syz-executor 3334 415179 65668 0 2 0x482 syz-executor 59445 263871 65668 0 2 0x2 syz-executor 83890 500801 65668 0 2 0x2 syz-executor 8750 232254 65668 0 2 0x482 syz-executor 61728 229135 65668 0 3 0x82 wait syz-executor 65668 132528 57311 0 3 0x82 kqread syz-executor 57311 416774 87443 0 3 0x10008a sigsusp ksh 87443 217797 89170 0 3 0x98 kqread sshd-session 89170 339454 27173 0 3 0x92 kqread sshd-session 83522 446221 1 0 3 0x100083 ttyin getty 27173 291854 1 0 3 0x88 kqread sshd 76968 493930 90960 74 3 0x1100092 bpf pflogd 90960 255177 1 0 3 0x80 sbwait pflogd 5121 460070 6661 73 3 0x1100090 kqread syslogd 6661 130915 1 0 3 0x100082 sbwait syslogd 66251 256819 1 0 3 0x100080 kqread resolvd 82147 31885 20581 77 3 0x100092 kqread dhcpleased 56681 90387 20581 77 3 0x100092 kqread dhcpleased 20581 148756 1 0 3 0x80 kqread dhcpleased 56097 472215 0 0 3 0x14200 bored smr 44308 117737 0 0 2 0x14200 zerothread 96737 330312 0 0 3 0x14200 aiodoned aiodoned 30812 501908 0 0 3 0x14200 syncer update 93466 135751 0 0 3 0x14200 cleaner cleaner 43093 133139 0 0 3 0x14200 reaper reaper 49737 353749 0 0 3 0x14200 pgdaemon pagedaemon 98710 382224 0 0 3 0x14200 bored viomb 16107 321484 0 0 3 0x40014200 acpi0 acpi0 86759 273618 0 0 3 0x40014200 idle1 87559 138255 0 0 3 0x14200 bored softnet3 19719 283878 0 0 3 0x14200 bored softnet2 1440 76204 0 0 3 0x14200 bored softnet1 20357 39962 0 0 3 0x14200 bored softnet0 93848 95161 0 0 3 0x14200 bored systqmp 7974 352441 0 0 3 0x14200 bored systq 96698 174022 0 0 3 0x14200 tmoslp softclockmp 51610 523345 0 0 3 0x40014200 tmoslp softclock 59068 69631 0 0 3 0x40014200 idle0 1 493296 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 91493 (syz-executor) thread 0xffff80003009a028 (129043) shared rwlock vmmaplk r = 0 (0xfffffd806b922a08) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_read+0x3af sys/kern/kern_rwlock.c:405 #2 uvm_fault_unwire+0x3e sys/uvm/uvm_fault.c:1701 #3 sysctl_vsunlock+0x7b sys/kern/kern_sysctl.c:215 #4 sys_sysctl+0x460 sys/kern/kern_sysctl.c:309 #5 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #6 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839721b0) #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+0x4b7 sys/kern/sched_bsd.c:441 #3 sleep_finish+0x24f sys/kern/kern_synch.c:414 #4 rw_do_enter_read+0x2de sys/kern/kern_rwlock.c:385 #5 uvm_fault_unwire+0x3e sys/uvm/uvm_fault.c:1701 #6 sysctl_vsunlock+0x7b sys/kern/kern_sysctl.c:215 #7 sys_sysctl+0x460 sys/kern/kern_sysctl.c:309 #8 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 exclusive rwlock sysctllk r = 0 (0xffffffff8382bb08) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 sysctl_vslock+0x45 sys/kern/kern_sysctl.c:187 #3 sys_sysctl+0x398 sys/kern/kern_sysctl.c:299 #4 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #4 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #5 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10197 11030K 11079K 166960K 11370 0 pcb 18 12K 12K 166960K 65 0 rtable 241 8K 8K 166960K 384 0 pf 34 17K 18K 166960K 59 0 ifaddr 43 7K 8K 166960K 55 0 ifgroup 55 2K 2K 166960K 73 0 sysctl 3 1K 1K 166960K 3 0 counters 64 36K 37K 166960K 80 0 ioctlops 0 0K 4K 166960K 1543 0 iov 0 0K 18K 166960K 25 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1430 90K 90K 166960K 1590 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 5 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 17 0 dirhash 12 2K 3K 166960K 30 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 240K 166960K 436 0 sigio 1 0K 0K 166960K 5 0 proc 78 115K 140K 166960K 589 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 56 0 in_multi 99 7K 7K 166960K 116 0 ether_multi 1 0K 0K 166960K 4 0 mrt 1 0K 0K 166960K 1 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 421 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 229 76K 86K 166960K 5628 0 UVM aobj 14 2K 2K 166960K 14 0 pinsyscall 42 84K 100K 166960K 1566 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 12 0K 1K 166960K 34 0 temp 47 8636K 8758K 166960K 14167 0 kqueue 14 22K 26K 166960K 80 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 57 0 52 1 0 1 1 0 8 0 rtentry 112 115 0 4 4 0 4 4 0 8 0 unpcb 144 324 0 305 6 1 5 6 0 8 4 syncache 336 10 0 10 1 0 1 1 0 8 1 tcpqe 32 3 0 3 1 0 1 1 0 8 1 tcpcb 808 103 0 96 2 0 2 2 0 8 1 arp 120 18 0 0 1 0 1 1 0 8 0 inpcb 376 450 0 439 9 0 9 9 0 8 7 nd6 136 24 0 0 1 0 1 1 0 8 0 pkpcb 40 3 0 3 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1168 6 0 6 1 0 1 1 0 8 1 pppxif 1472 2 0 2 1 0 1 1 0 8 1 pffrag 232 3 0 0 1 0 1 1 0 482 0 pffrnode 88 3 0 0 1 0 1 1 0 8 0 pffrent 40 3 0 0 1 0 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 43 0 1 1 0 1 1 0 8 0 pfstkey 128 43 0 1 2 0 2 2 0 8 0 pfstate 376 43 0 1 5 0 5 5 0 8 0 pfrule 1344 22 0 17 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 470 0 12 29 0 29 29 0 8 0 art_table 32 472 0 12 4 0 4 4 0 8 0 art_node 16 114 0 13 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 1 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 14 0 4 1 0 1 1 0 8 0 shmpl 112 11 0 0 1 0 1 1 0 8 0 dirhash 1024 29 0 12 3 0 3 3 0 8 0 dino2pl 256 2121 0 610 96 0 96 96 0 8 0 ffsino 280 2121 0 610 109 0 109 109 0 8 0 nchpl 144 2726 0 1034 63 0 63 63 0 8 0 uvmvnodes 80 2340 0 0 48 0 48 48 0 8 0 vnodes 216 2340 0 0 130 0 130 130 0 8 0 namei 1024 8880 0 8880 1 0 1 1 0 8 1 percpumem 16 54 0 8 1 0 1 1 0 8 0 kstatmem 264 36 0 12 2 0 2 2 0 8 0 scsiplug 72 2 0 2 1 0 1 1 0 8 1 scxspl 216 8953 0 8953 9 4 5 8 1 8 5 plimitpl 152 70 0 52 1 0 1 1 0 8 0 sigapl 424 759 0 688 10 1 9 9 0 8 0 futexpl 64 4547 0 4541 1 0 1 1 0 8 0 knotepl 120 529 0 0 17 0 17 17 0 8 0 kqueuepl 216 129 0 118 2 0 2 2 0 8 1 pipepl 328 135 0 106 3 0 3 3 0 8 0 fdescpl 504 719 0 688 5 0 5 5 0 8 0 filepl 152 3582 0 3352 15 1 14 15 0 8 4 lockfpl 104 75 0 73 1 0 1 1 0 8 0 lockfspl 48 28 0 26 1 0 1 1 0 8 0 sessionpl 144 29 0 20 1 0 1 1 0 8 0 pgrppl 48 40 0 23 1 0 1 1 0 8 0 ucredpl 104 387 0 371 1 0 1 1 0 8 0 zombiepl 144 689 0 688 1 0 1 1 0 8 0 processpl 1176 759 0 688 6 0 6 6 0 8 0 procpl 656 1271 0 1190 7 0 7 7 0 8 0 sosppl 168 3 0 3 1 1 0 1 0 8 0 sockpl 688 836 0 801 16 5 11 16 0 8 7 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 113 0 0 15 0 15 15 0 8 0 mcl2k 2048 19 0 0 3 0 3 3 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 162 0 0 11 0 11 11 0 8 0 bufpl 280 2913 0 131 199 0 199 199 0 8 0 anonpl 24 137239 0 133880 49 3 46 47 0 184 20 amapchunkpl 152 17733 0 17239 27 1 26 27 0 158 4 amappl16 200 2796 0 2764 17 6 11 15 0 8 7 amappl15 192 7 0 6 1 0 1 1 0 8 0 amappl14 184 130 0 118 1 0 1 1 0 8 0 amappl13 176 40 0 40 1 1 0 1 0 8 0 amappl12 168 1382 0 1351 3 1 2 2 0 8 0 amappl11 160 54 0 40 1 0 1 1 0 8 0 amappl10 152 35 0 35 1 1 0 1 0 8 0 amappl9 144 346 0 345 1 0 1 1 0 8 0 amappl8 136 31 0 29 1 0 1 1 0 8 0 amappl7 128 115 0 102 1 0 1 1 0 8 0 amappl6 120 196 0 193 1 0 1 1 0 8 0 amappl5 112 134 0 125 1 0 1 1 0 8 0 amappl4 104 348 0 329 1 0 1 1 0 8 0 amappl3 96 3306 0 3192 4 0 4 4 0 8 0 amappl2 88 720 0 657 2 0 2 2 0 8 0 amappl1 80 10523 0 9950 17 1 16 16 0 8 1 amappl 88 5197 0 5025 5 0 5 5 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 dma512 512 1 0 1 1 1 0 1 0 8 0 dma256 256 7 0 7 2 1 1 1 0 8 1 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 13 0 0 1 0 1 1 0 8 0 uaddrrnd 24 719 0 688 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 719 0 688 1 0 1 1 0 8 0 vmmpekpl 168 8099 0 8053 3 0 3 3 0 8 0 vmmpepl 168 53196 0 51325 100 1 99 100 0 357 13 vmsppl 456 718 0 688 5 0 5 5 0 8 1 rwobjpl 64 20588 0 17303 54 0 54 54 0 8 0 pdppl 4096 1446 0 1376 108 36 72 84 0 8 2 pvpl 32 16444 0 0 134 1 133 133 0 265 0 pmappl 248 718 0 688 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 285 0 39 8 0 8 8 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:438 panic(ffffffff83408738) at panic+0x1e5 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806b922908,400000002000,400000003000) at uvm_fault_unwire_locked+0x48d sys/uvm/uvm_fault.c:1739 uvm_fault_unwire(fffffd806b922908,400000002000,400000003000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1702 sysctl_vsunlock(400000002400,c6) at sysctl_vsunlock+0x7b sys/kern/kern_sysctl.c:215 sys_sysctl(ffff80003009a028,ffff80003c5a7b70,ffff80003c5a7ac0) at sys_sysctl+0x460 sys/kern/kern_sysctl.c:309 syscall(ffff80003c5a7b70) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c5a7b70) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9252f4ea50, count: -8 ddb{0}> machine ddbcpu 1