panic: uvm_fault_unwire_locked: address not in map Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *421301 3718 32767 0x10 0x4000000 0 syz-executor.6 348558 14055 0 0x14000 0x200 1 softnet0 db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8285a153) at panic+0x17b sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd807ac94768,20002000,20004000) at uvm_fault_unwire_locked+0x321 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd807ac94768,20002000,20004000) at uvm_fault_unwire+0x43 sys/uvm/uvm_fault.c:1623 sys_sysctl(ffff80002a1d8800,ffff800030db6b10,ffff800030db6b60) at sys_sysctl+0x239 sys/kern/kern_sysctl.c:259 syscall(ffff800030db6be0) at syscall+0x4e6 sys/arch/amd64/amd64/trap.c:606 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc4553d80e30, 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(ffffffff8285a153) at panic+0x17b sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd807ac94768,20002000,20004000) at uvm_fault_unwire_locked+0x321 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd807ac94768,20002000,20004000) at uvm_fault_unwire+0x43 sys/uvm/uvm_fault.c:1623 sys_sysctl(ffff80002a1d8800,ffff800030db6b10,ffff800030db6b60) at sys_sysctl+0x239 sys/kern/kern_sysctl.c:259 syscall(ffff800030db6be0) at syscall+0x4e6 sys/arch/amd64/amd64/trap.c:606 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc4553d80e30, count: -7 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800030db68e0 rbx 0xffffffff82b81ba7 cpu_info_full_primary+0x2ba7 rdx 0 rcx 0xffff80002a1d8800 rax 0xffffffff82b80ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xa767fc781724ec59 r11 0xb837a52e94311e27 r12 0xffffffff82b819a8 cpu_info_full_primary+0x29a8 r13 0 r14 0 r15 0x1 rip 0xffffffff82251bec db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff800030db68d0 ss 0 db_enter+0x1c: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.6) tid=421301 pid=3718 tcnt=4 stat=onproc flags process=10 proc=4000000 runpri=36, usrpri=79, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a1d8d50,0xffff80002a1d8ab8 process=0xffff8000ffff8438 user=0xffff800030db1000, vmspace=0xfffffd807ac94768 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 3718 173553 9687 32767 2 0x10 syz-executor.6 3718 120518 9687 32767 2 0x4000010 syz-executor.6 * 3718 421301 9687 32767 7 0x4000010 syz-executor.6 3718 444823 9687 32767 2 0x4000010 syz-executor.6 17123 511357 46237 32767 2 0x10 syz-executor.1 83711 115932 16189 32767 2 0x81010 syz-executor.3 83711 325039 16189 32767 3 0x4003010 suspend syz-executor.3 41604 250849 44712 32767 2 0x10 syz-executor.0 41604 243181 44712 32767 3 0x4000090 fsleep syz-executor.0 41604 384323 44712 32767 3 0x4000090 fsleep syz-executor.0 38492 246177 73753 32767 2 0x10 syz-executor.5 38492 351134 73753 32767 3 0x4000090 netcon syz-executor.5 17398 295369 97813 32767 2 0x10 syz-executor.7 17398 360461 97813 32767 3 0x4000090 fsleep syz-executor.7 17538 18737 86946 32767 3 0x90 nanoslp syz-executor.4 17538 77129 86946 32767 3 0x4000090 netcon2 syz-executor.4 17538 481284 86946 32767 3 0x4000090 fsleep syz-executor.4 17538 181129 86946 32767 3 0x4000090 fsleep syz-executor.4 44712 177787 34203 32767 3 0x90 nanoslp syz-executor.0 34203 236660 8591 0 3 0x82 wait syz-executor.0 46237 26784 65534 32767 3 0x90 nanoslp syz-executor.1 65534 158720 8591 0 3 0x82 wait syz-executor.1 9687 501748 7057 32767 3 0x90 nanoslp syz-executor.6 7057 505627 8591 0 3 0x82 wait syz-executor.6 44159 368581 36185 32767 2 0x10 syz-executor.2 36185 96025 8591 0 3 0x82 wait syz-executor.2 86946 39859 1229 32767 3 0x90 nanoslp syz-executor.4 1229 79961 8591 0 3 0x82 wait syz-executor.4 16189 132139 70770 32767 3 0x90 nanoslp syz-executor.3 70770 311543 8591 0 3 0x82 wait syz-executor.3 97813 60067 36325 32767 3 0x90 nanoslp syz-executor.7 36325 61975 8591 0 3 0x82 wait syz-executor.7 65485 485519 0 0 3 0x14200 bored sosplice 73753 255884 11195 32767 3 0x90 nanoslp syz-executor.5 11195 451445 8591 0 3 0x82 wait syz-executor.5 8591 336682 88448 0 3 0x2000082 thrsleep syz-fuzzer 8591 486510 88448 0 3 0x6000082 nanoslp syz-fuzzer 8591 290226 88448 0 3 0x6000082 wait syz-fuzzer 8591 260428 88448 0 3 0x6000082 kqread syz-fuzzer 8591 301446 88448 0 3 0x6000082 thrsleep syz-fuzzer 8591 214068 88448 0 3 0x6000082 wait syz-fuzzer 8591 234719 88448 0 3 0x6000082 wait syz-fuzzer 8591 167865 88448 0 3 0x6000082 thrsleep syz-fuzzer 8591 339647 88448 0 3 0x6000082 wait syz-fuzzer 8591 492073 88448 0 3 0x6000082 thrsleep syz-fuzzer 8591 24078 88448 0 3 0x6000082 thrsleep syz-fuzzer 8591 339933 88448 0 3 0x6000082 wait syz-fuzzer 8591 229502 88448 0 3 0x6000082 thrsleep syz-fuzzer 8591 89462 88448 0 3 0x6000082 wait syz-fuzzer 8591 126534 88448 0 3 0x6000082 wait syz-fuzzer 8591 293624 88448 0 3 0x6000082 wait syz-fuzzer 88448 126574 18109 0 3 0x10008a sigsusp ksh 18109 123826 12274 0 3 0x9a kqread sshd 56425 477518 1 0 3 0x100083 ttyin getty 12274 389779 1 0 3 0x88 kqread sshd 39098 358421 4843 73 3 0x1100090 kqread syslogd 4843 96799 1 0 3 0x100082 netio syslogd 86290 247695 1 0 3 0x100080 kqread resolvd 41517 257479 78178 77 3 0x100092 kqread dhcpleased 24826 274933 78178 77 3 0x100092 kqread dhcpleased 78178 109127 1 0 3 0x80 kqread dhcpleased 5836 197337 0 0 3 0x14200 bored smr 63477 393183 0 0 2 0x14200 zerothread 39567 236317 0 0 3 0x14200 aiodoned aiodoned 56289 354447 0 0 3 0x14200 syncer update 1911 286822 0 0 3 0x14200 cleaner cleaner 83861 17010 0 0 3 0x14200 reaper reaper 90590 425294 0 0 3 0x14200 pgdaemon pagedaemon 51234 178928 0 0 3 0x14200 bored viomb 91465 195964 0 0 3 0x40014200 acpi0 acpi0 56839 309466 0 0 3 0x40014200 idle1 49815 32498 0 0 3 0x14200 bored softnet3 653 403679 0 0 3 0x14200 bored softnet2 93373 75982 0 0 3 0x14200 bored softnet1 14055 348558 0 0 7 0x14200 softnet0 87148 403846 0 0 3 0x14200 bored systqmp 40950 182277 0 0 3 0x14200 bored systq 30808 40621 0 0 3 0x14200 tmoslp softclockmp 24513 496823 0 0 3 0x40014200 tmoslp softclock 89044 194810 0 0 3 0x40014200 idle0 1 489121 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 1: exclusive mutex &uvm.fpageqlock r = 0 (0xffffffff82c5a0e8) #0 witness_lock+0x447 #1 mtx_enter_try+0x104 #2 mtx_enter+0x4f sys/kern/kern_lock.c:266 #3 uvm_pmr_freepages+0x10c sys/uvm/uvm_pmemrange.c:1289 #4 uvm_anfree_list+0x160 sys/uvm/uvm_anon.c:116 #5 amap_wiperange_chunk+0x15f sys/uvm/uvm_amap.c:986 #6 amap_pp_adjref+0x53b sys/uvm/uvm_amap.c:947 #7 amap_adjref_anons+0x198 sys/uvm/uvm_amap.c:1332 #8 uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1366 #9 sys_munmap+0x22e sys/uvm/uvm_mmap.c:539 #10 syscall+0x50f mi_syscall sys/sys/syscall_mi.h:103 [inline] #10 syscall+0x50f sys/arch/amd64/amd64/trap.c:606 #11 Xsyscall+0x128 exclusive mutex &uvm.pageqlock r = 0 (0xffffffff82c5a0b8) #0 witness_lock+0x447 #1 mtx_enter_try+0x104 #2 mtx_enter+0x4f sys/kern/kern_lock.c:266 #3 uvm_anfree_list+0xa4 sys/uvm/uvm_anon.c:104 #4 amap_wiperange_chunk+0x15f sys/uvm/uvm_amap.c:986 #5 amap_pp_adjref+0x53b sys/uvm/uvm_amap.c:947 #6 amap_adjref_anons+0x198 sys/uvm/uvm_amap.c:1332 #7 uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1366 #8 sys_munmap+0x22e sys/uvm/uvm_mmap.c:539 #9 syscall+0x50f mi_syscall sys/sys/syscall_mi.h:103 [inline] #9 syscall+0x50f sys/arch/amd64/amd64/trap.c:606 #10 Xsyscall+0x128 Process 3718 (syz-executor.6) thread 0xffff80002a1d8d50 (120518) exclusive rwlock amaplk r = 0 (0xfffffd806906d320) #0 witness_lock+0x447 #1 amap_unref+0x2f sys/uvm/uvm_amap.c:1363 #2 uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1366 #3 sys_munmap+0x22e sys/uvm/uvm_mmap.c:539 #4 syscall+0x50f mi_syscall sys/sys/syscall_mi.h:103 [inline] #4 syscall+0x50f sys/arch/amd64/amd64/trap.c:606 #5 Xsyscall+0x128 Process 3718 (syz-executor.6) thread 0xffff80002a1d8800 (421301) shared rwlock vmmaplk r = 0 (0xfffffd807ac94860) #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+0x4e6 sys/arch/amd64/amd64/trap.c:606 #5 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82d3b700) #0 witness_lock+0x447 #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x46d 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+0x4e6 sys/arch/amd64/amd64/trap.c:606 #8 Xsyscall+0x128 exclusive rwlock sysctllk r = 0 (0xffffffff82b71130) #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+0x4e6 sys/arch/amd64/amd64/trap.c:606 #4 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10222 6413K 6421K 166960K 11386 0 pcb 13 20K 24K 166960K 21 0 rtable 248 7K 7K 166960K 1972 0 pf 29 8K 8K 166960K 85 0 ifaddr 44 15K 15K 166960K 162 0 ifgroup 50 2K 2K 166960K 162 0 sysctl 4 1K 2K 166960K 7 0 counters 64 36K 36K 166960K 120 0 ioctlops 0 0K 2K 166960K 462 0 iov 0 0K 24K 166960K 1830 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1279 80K 80K 166960K 3918 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 309 0 VM map 2 1K 1K 166960K 2 0 sem 12 1K 1K 166960K 393 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 25 93K 117K 166960K 19565 0 sigio 0 0K 0K 166960K 344 0 proc 56 78K 115K 166960K 2434 0 subproc 104 6K 6K 166960K 468 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 9641 0 in_multi 99 7K 7K 166960K 585 0 ether_multi 1 0K 0K 166960K 27 0 mrt 1 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 253 1129K 1129K 166960K 253 0 exec 0 0K 1K 166960K 3033 0 tdb 3 0K 0K 166960K 3 0 pagedep 1 8K 8K 166960K 1 0 inodedep 1 32K 32K 166960K 1 0 newblk 1 0K 0K 166960K 1 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 462 92K 108K 166960K 196837 0 UVM aobj 131 4K 6K 166960K 155 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 3617 0 NDP 11 0K 2K 166960K 111 0 temp 74 5932K 6060K 166960K 51046 0 kqueue 12 18K 31K 166960K 1622 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 1185 0 1182 17 16 1 5 0 8 0 rtentry 112 454 0 337 4 0 4 4 0 8 0 unpcb 144 17780 0 17767 134 131 3 11 0 8 2 syncache 312 263 0 263 33 32 1 1 0 8 1 tcpqe 32 309 0 309 29 28 1 1 0 8 1 tcpcb 808 16505 0 16431 264 250 14 32 0 8 5 arp 120 81 0 62 1 0 1 1 0 8 0 ipq 40 95 0 92 7 6 1 1 0 8 0 ipqe 40 330 0 325 7 6 1 1 0 8 0 inpcb 368 31856 0 31771 260 246 14 29 0 8 2 nd6 136 136 0 106 3 1 2 2 0 8 0 kcovpl 48 36 0 28 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1803 0 1334 35 5 30 30 0 8 0 art_table 32 1804 0 1334 4 0 4 4 0 8 0 art_node 16 453 0 346 1 0 1 1 0 8 0 sysvmsgpl 40 13 0 5 1 0 1 1 0 8 0 semupl 112 5 0 5 2 2 0 1 0 8 0 semapl 112 391 0 381 1 0 1 1 0 8 0 shmpl 112 152 0 24 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 25582 0 24120 92 0 92 92 0 8 0 ffsino 272 25582 0 24120 98 0 98 98 0 8 0 nchpl 144 50877 0 49234 63 0 63 63 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 163193 0 163193 6 5 1 2 0 8 1 percpumem 16 74 0 28 1 0 1 1 0 8 0 kstatmem 264 78 0 56 2 0 2 2 0 8 0 scxspl 216 155038 0 155038 66 65 1 8 1 8 1 plimitpl 152 3261 0 3238 31 29 2 2 0 8 1 sigapl 424 19812 0 19757 7 0 7 7 0 8 0 futexpl 64 162356 0 162351 6 5 1 1 0 8 0 knotepl 120 1021 0 0 19 2 17 17 0 8 0 kqueuepl 216 4302 0 4294 69 68 1 8 0 8 0 pipepl 320 4080 0 4052 103 95 8 11 0 8 5 fdescpl 496 19793 0 19757 7 1 6 6 0 8 0 filepl 152 129304 0 129060 172 154 18 23 0 8 5 lockfpl 104 2849 0 2847 3 2 1 2 0 8 0 lockfspl 48 720 0 718 1 0 1 1 0 8 0 sessionpl 144 51 0 35 1 0 1 1 0 8 0 pgrppl 48 400 0 384 1 0 1 1 0 8 0 ucredpl 104 14697 0 14679 1 0 1 1 0 8 0 zombiepl 144 19758 0 19757 1 0 1 1 0 8 0 processpl 1072 19812 0 19757 5 1 4 5 0 8 0 procpl 680 56192 0 56111 12 4 8 9 0 8 0 sosppl 168 277 0 268 11 10 1 1 0 8 0 sockpl 488 52651 0 52555 681 657 24 43 0 8 6 mcl64k 65536 26 0 0 4 1 3 3 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 0 8 0 mcl12k 12288 33 0 0 2 0 2 2 0 8 0 mcl9k 9216 18 0 0 2 0 2 2 0 8 0 mcl8k 8192 122 0 0 12 8 4 10 0 8 0 mcl4k 4096 49 0 0 3 0 3 3 0 8 0 mcl2k2 2112 11 0 0 1 0 1 1 0 8 0 mcl2k 2048 407 0 0 30 14 16 30 0 8 0 mtagpl 96 14 0 0 1 0 1 1 0 8 0 mbufpl 256 1766 0 0 65 0 65 65 0 8 0 bufpl 288 33555 0 27231 455 2 453 453 0 8 0 anonpl 24 2080560 0 2068630 164 68 96 114 0 186 0 amapchunkpl 152 649966 0 648958 161 108 53 55 0 158 9 amappl16 200 45562 0 45254 237 212 25 40 0 8 6 amappl15 192 29 0 29 6 6 0 1 0 8 0 amappl14 184 242 0 230 2 1 1 2 0 8 0 amappl13 176 42 0 41 2 1 1 1 0 8 0 amappl12 168 20866 0 20823 6 4 2 3 0 8 0 amappl11 160 66 0 55 1 0 1 1 0 8 0 amappl10 152 84 0 68 2 1 1 1 0 8 0 amappl9 144 290 0 290 40 39 1 1 0 8 1 amappl8 136 810 0 662 6 0 6 6 0 8 0 amappl7 128 344 0 316 2 0 2 2 0 8 0 amappl6 120 846 0 831 1 0 1 1 0 8 0 amappl5 112 568 0 558 1 0 1 1 0 8 0 amappl4 104 1031 0 998 4 3 1 2 0 8 0 amappl3 96 121161 0 121045 37 33 4 4 0 8 1 amappl2 88 21201 0 21114 7 4 3 3 0 8 1 amappl1 80 78667 0 78126 22 10 12 22 0 8 0 amappl 88 195302 0 195011 8 0 8 8 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 72 154 0 24 3 0 3 3 0 8 0 uaddrrnd 24 19793 0 19757 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 19793 0 19757 1 0 1 1 0 8 0 vmmpekpl 168 159520 0 159453 4 0 4 4 0 8 0 vmmpepl 168 1156699 0 1154128 351 222 129 138 0 357 0 vmsppl 464 19792 0 19757 7 2 5 6 0 8 0 rwobjpl 56 294837 0 287311 122 12 110 110 0 8 0 pdppl 4096 39594 0 39514 545 463 82 92 0 8 2 pvpl 32 44630 0 0 360 0 360 360 0 265 0 pmappl 248 19792 0 19757 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1924 0 1032 27 0 27 27 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(ffffffff8285a153) at panic+0x17b sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd807ac94768,20002000,20004000) at uvm_fault_unwire_locked+0x321 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd807ac94768,20002000,20004000) at uvm_fault_unwire+0x43 sys/uvm/uvm_fault.c:1623 sys_sysctl(ffff80002a1d8800,ffff800030db6b10,ffff800030db6b60) at sys_sysctl+0x239 sys/kern/kern_sysctl.c:259 syscall(ffff800030db6be0) at syscall+0x4e6 sys/arch/amd64/amd64/trap.c:606 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc4553d80e30, count: -7 ddb{0}> machine ddbcpu 1