panic: uvm_fault_unwire_locked: address not in map Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *172427 40573 32767 0x10 0x4000000 1 syz-executor.0 292754 83341 32767 0x10 0 0 syz-executor.3 db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8285927d) at panic+0x17b sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806f160008,20002000,20003000) at uvm_fault_unwire_locked+0x321 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd806f160008,20002000,20003000) at uvm_fault_unwire+0x43 sys/uvm/uvm_fault.c:1623 sys_sysctl(ffff80002a1cdd60,ffff80002d4f81a0,ffff80002d4f81f0) at sys_sysctl+0x239 sys/kern/kern_sysctl.c:259 syscall(ffff80002d4f8270) at syscall+0x4e6 sys/arch/amd64/amd64/trap.c:606 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75d9f63df0, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault_unwire_locked: address not in map ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8285927d) at panic+0x17b sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806f160008,20002000,20003000) at uvm_fault_unwire_locked+0x321 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd806f160008,20002000,20003000) at uvm_fault_unwire+0x43 sys/uvm/uvm_fault.c:1623 sys_sysctl(ffff80002a1cdd60,ffff80002d4f81a0,ffff80002d4f81f0) at sys_sysctl+0x239 sys/kern/kern_sysctl.c:259 syscall(ffff80002d4f8270) at syscall+0x4e6 sys/arch/amd64/amd64/trap.c:606 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75d9f63df0, count: -7 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002d4f7f70 rbx 0xffff800029d3cba7 rdx 0 rcx 0xffff80002a1cdd60 rax 0xffff800029d3bff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xe98d45056f9a096 r11 0x16bb9bc14923c846 r12 0xffff800029d3c9a8 r13 0 r14 0 r15 0x1 rip 0xffffffff82624a7c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002d4f7f60 ss 0 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.0) tid=172427 pid=40573 tcnt=3 stat=onproc flags process=10 proc=4000000 runpri=36, usrpri=83, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a214d58,0xffff80002a1ced60 process=0xffff80002a273688 user=0xffff80002d4f3000, vmspace=0xfffffd806f160008 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 63457 346886 95817 32767 2 0x10 syz-executor.6 69448 22689 46305 32767 2 0x10 syz-executor.2 40573 254822 73902 32767 2 0x10 syz-executor.0 40573 199244 73902 32767 3 0x4000090 fsleep syz-executor.0 *40573 172427 73902 32767 7 0x4000010 syz-executor.0 6715 185284 3122 32767 2 0x10 syz-executor.1 58238 187120 86272 32767 2 0x10 syz-executor.7 58238 493820 86272 32767 2 0x4000010 syz-executor.7 76567 488946 68233 32767 2 0x10 syz-executor.5 23463 326698 99433 32767 2 0x10 syz-executor.4 23463 420064 99433 32767 3 0x4000090 fsleep syz-executor.4 83341 292754 70417 32767 7 0x10 syz-executor.3 83341 390967 70417 32767 2 0x4000090 syz-executor.3 46305 511682 40365 32767 3 0x90 nanoslp syz-executor.2 40365 476798 34459 0 3 0x82 wait syz-executor.2 3122 210923 31727 32767 3 0x90 nanoslp syz-executor.1 31727 28219 34459 0 3 0x82 wait syz-executor.1 95817 240156 12275 32767 2 0x10 syz-executor.6 12275 498090 34459 0 3 0x82 wait syz-executor.6 73902 443047 16923 32767 3 0x90 nanoslp syz-executor.0 16923 353594 34459 0 3 0x82 wait syz-executor.0 68233 234508 58267 32767 3 0x90 nanoslp syz-executor.5 58267 513285 34459 0 3 0x82 wait syz-executor.5 99433 22243 20679 32767 3 0x90 nanoslp syz-executor.4 20679 410811 34459 0 3 0x82 wait syz-executor.4 86272 391764 7867 32767 3 0x90 nanoslp syz-executor.7 7867 476511 34459 0 3 0x82 wait syz-executor.7 30989 83401 0 0 3 0x14200 bored sosplice 70417 421057 36312 32767 2 0x10 syz-executor.3 36312 476528 34459 0 3 0x82 wait syz-executor.3 34459 122945 1521 0 3 0x2000082 thrsleep syz-fuzzer 34459 147213 1521 0 3 0x6000082 thrsleep syz-fuzzer 34459 213048 1521 0 3 0x6000082 kqread syz-fuzzer 34459 263205 1521 0 3 0x6000082 wait syz-fuzzer 34459 69461 1521 0 3 0x6000082 wait syz-fuzzer 34459 315319 1521 0 3 0x6000082 wait syz-fuzzer 34459 35027 1521 0 3 0x6000082 thrsleep syz-fuzzer 34459 211318 1521 0 3 0x6000082 wait syz-fuzzer 34459 297799 1521 0 3 0x6000082 thrsleep syz-fuzzer 34459 90643 1521 0 3 0x6000082 thrsleep syz-fuzzer 34459 52749 1521 0 3 0x6000082 thrsleep syz-fuzzer 34459 53812 1521 0 3 0x6000082 wait syz-fuzzer 34459 134843 1521 0 3 0x6000082 wait syz-fuzzer 34459 163696 1521 0 3 0x6000082 wait syz-fuzzer 34459 120997 1521 0 3 0x6000082 wait syz-fuzzer 34459 279597 1521 0 3 0x6000082 thrsleep syz-fuzzer 1521 408796 15996 0 3 0x10008a sigsusp ksh 15996 280459 90679 0 3 0x9a kqread sshd 57184 310371 1 0 3 0x100083 ttyin getty 90679 296852 1 0 3 0x88 kqread sshd 60439 317626 33019 73 3 0x1100090 kqread syslogd 33019 152033 1 0 3 0x100082 netio syslogd 54976 25877 1 0 3 0x100080 kqread resolvd 33134 49945 78494 77 3 0x100092 kqread dhcpleased 55525 413840 78494 77 3 0x100092 kqread dhcpleased 78494 148310 1 0 3 0x80 kqread dhcpleased 85116 243899 0 0 3 0x14200 bored smr 62188 517045 0 0 2 0x14200 zerothread 67647 341750 0 0 3 0x14200 aiodoned aiodoned 89404 437024 0 0 3 0x14200 syncer update 84526 122894 0 0 3 0x14200 cleaner cleaner 95672 2950 0 0 3 0x14200 reaper reaper 14358 489359 0 0 3 0x14200 pgdaemon pagedaemon 22630 460808 0 0 3 0x14200 bored viomb 50312 68574 0 0 3 0x40014200 acpi0 acpi0 56340 498888 0 0 3 0x40014200 idle1 4897 499896 0 0 3 0x14200 bored softnet3 89948 391986 0 0 3 0x14200 bored softnet2 44970 131877 0 0 3 0x14200 bored softnet1 81199 314383 0 0 3 0x14200 bored softnet0 39924 325425 0 0 3 0x14200 bored systqmp 20767 256042 0 0 3 0x14200 bored systq 73748 50086 0 0 3 0x14200 tmoslp softclockmp 84615 59690 0 0 3 0x40014200 tmoslp softclock 74385 161405 0 0 3 0x40014200 idle0 1 15637 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 40573 (syz-executor.0) thread 0xffff80002a214d58 (199244) exclusive rwlock amaplk r = 0 (0xfffffd806995e9e8) #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 40573 (syz-executor.0) thread 0xffff80002a1cdd60 (172427) shared rwlock vmmaplk r = 0 (0xfffffd806f160100) #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 (0xffffffff82cdcd50) #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 (0xffffffff82bcef00) #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{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10220 6413K 6421K 166960K 11438 0 pcb 13 16K 20K 166960K 19 0 rtable 250 7K 7K 166960K 3796 0 pf 29 8K 8K 166960K 121 0 ifaddr 44 15K 16K 166960K 234 0 ifgroup 50 2K 2K 166960K 234 0 sysctl 4 1K 1K 166960K 4 0 counters 64 36K 36K 166960K 156 0 ioctlops 0 0K 2K 166960K 586 0 iov 0 0K 24K 166960K 3189 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1279 80K 80K 166960K 8217 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 385 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 5354 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 26 97K 117K 166960K 38472 0 sigio 0 0K 0K 166960K 1004 0 proc 56 78K 103K 166960K 4147 0 subproc 104 6K 6K 166960K 702 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 2508 0 in_multi 99 7K 7K 166960K 956 0 ether_multi 1 0K 0K 166960K 65 0 mrt 2 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 241 1076K 1076K 166960K 241 0 exec 0 0K 1K 166960K 5984 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 532 96K 113K 166960K 384165 0 UVM aobj 131 4K 7K 166960K 148 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 797 0 NDP 11 0K 2K 166960K 165 0 temp 74 5924K 6052K 166960K 95096 0 kqueue 12 18K 30K 166960K 3148 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> 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 2288 0 2285 35 34 1 5 0 8 0 rtentry 112 660 0 542 4 0 4 4 0 8 0 unpcb 144 28168 0 28155 265 262 3 10 0 8 2 syncache 312 533 0 533 69 68 1 1 0 8 1 tcpqe 32 510 0 510 64 64 0 1 0 8 0 tcpcb 808 23471 0 23448 388 375 13 17 0 8 8 arp 120 117 0 98 1 0 1 1 0 8 0 ipq 40 59 0 59 15 15 0 1 0 8 0 ipqe 40 326 0 326 15 15 0 1 0 8 0 inpcb 368 69659 0 69628 561 543 18 32 0 8 13 ip6q 72 2 0 2 1 1 0 1 0 8 0 ip6af 40 3 0 3 1 1 0 1 0 8 0 nd6 136 198 0 167 3 1 2 2 0 8 0 kcovpl 48 54 0 46 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 2651 0 2156 36 4 32 32 0 8 0 art_table 32 2652 0 2156 6 1 5 5 0 8 0 art_node 16 659 0 551 1 0 1 1 0 8 0 semapl 112 5352 0 5342 1 0 1 1 0 8 0 shmpl 112 145 0 17 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 50740 0 49240 94 0 94 94 0 8 0 ffsino 272 50740 0 49240 101 0 101 101 0 8 0 nchpl 144 100186 0 98542 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 331614 0 331614 6 5 1 2 0 8 1 percpumem 16 92 0 46 1 0 1 1 0 8 0 kstatmem 264 114 0 92 2 0 2 2 0 8 0 scxspl 216 313533 0 313533 124 121 3 8 1 8 3 plimitpl 152 6006 0 5983 58 56 2 2 0 8 1 sigapl 424 38676 0 38620 7 0 7 7 0 8 0 futexpl 64 359191 0 359189 12 11 1 1 0 8 0 knotepl 120 2041 0 0 19 2 17 18 0 8 0 kqueuepl 216 8642 0 8634 174 173 1 9 0 8 0 pipepl 320 10958 0 10930 275 272 3 13 0 8 0 fdescpl 496 38657 0 38620 7 2 5 6 0 8 0 filepl 152 279399 0 279161 475 458 17 25 0 8 7 lockfpl 104 14348 0 14345 3 2 1 2 0 8 0 lockfspl 48 3225 0 3222 1 0 1 1 0 8 0 sessionpl 144 69 0 53 1 0 1 1 0 8 0 pgrppl 48 719 0 703 1 0 1 1 0 8 0 ucredpl 104 35220 0 35202 1 0 1 1 0 8 0 zombiepl 144 38620 0 38620 1 0 1 1 0 8 1 processpl 1072 38676 0 38620 5 1 4 5 0 8 0 procpl 680 109785 0 109709 58 50 8 9 0 8 1 sosppl 168 523 0 523 26 25 1 1 0 8 1 sockpl 488 102479 0 102437 1373 1347 26 45 0 8 17 mcl64k 65536 68 0 0 4 1 3 3 0 8 0 mcl16k 16384 73 0 0 6 3 3 3 0 8 0 mcl12k 12288 41 0 0 2 0 2 2 0 8 0 mcl9k 9216 25 0 0 2 0 2 2 0 8 0 mcl8k 8192 81 0 0 5 2 3 3 0 8 0 mcl4k 4096 134 0 0 8 5 3 4 0 8 0 mcl2k2 2112 18 0 0 2 0 2 2 0 8 0 mcl2k 2048 658 0 0 31 21 10 30 0 8 0 mtagpl 96 17 0 0 1 0 1 1 0 8 0 mbufpl 256 5659 0 0 262 0 262 262 0 8 0 bufpl 288 67506 0 61182 453 0 453 453 0 8 0 anonpl 24 3714199 0 3702160 213 114 99 113 0 186 0 amapchunkpl 152 1222574 0 1221678 379 327 52 54 0 158 14 amappl16 200 76335 0 76048 410 392 18 37 0 8 0 amappl15 192 15 0 15 4 4 0 1 0 8 0 amappl14 184 303 0 285 2 1 1 2 0 8 0 amappl13 176 46 0 46 12 12 0 1 0 8 0 amappl12 168 39967 0 39929 2 0 2 2 0 8 0 amappl11 160 61 0 51 1 0 1 1 0 8 0 amappl10 152 122 0 107 1 0 1 1 0 8 0 amappl9 144 687 0 686 2 1 1 1 0 8 0 amappl8 136 2461 0 2165 12 1 11 11 0 8 0 amappl7 128 597 0 568 2 0 2 2 0 8 0 amappl6 120 1502 0 1485 1 0 1 1 0 8 0 amappl5 112 1105 0 1096 1 0 1 1 0 8 0 amappl4 104 2563 0 2525 6 4 2 2 0 8 0 amappl3 96 236359 0 236262 68 64 4 4 0 8 1 amappl2 88 42974 0 42877 5 2 3 3 0 8 0 amappl1 80 142312 0 141782 22 10 12 22 0 8 0 amappl 88 381020 0 380762 7 0 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 72 147 0 17 3 0 3 3 0 8 0 uaddrrnd 24 38658 0 38621 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 38658 0 38621 1 0 1 1 0 8 0 vmmpekpl 168 311935 0 311871 4 0 4 4 0 8 0 vmmpepl 168 2238339 0 2235648 342 209 133 139 0 357 0 vmsppl 464 38657 0 38621 7 2 5 6 0 8 0 rwobjpl 56 548219 0 540587 125 13 112 114 0 8 0 pdppl 4096 77324 0 77242 1089 1007 82 92 0 8 0 pvpl 32 44833 0 0 362 0 362 362 0 265 0 pmappl 248 38657 0 38621 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 3178 0 2086 32 0 32 32 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffffffff82b72ff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 end of kernel end trace frame: 0x7442960667a0, count: 12 ddb{0}> trace x86_ipi_db(ffffffff82b72ff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 end of kernel end trace frame: 0x7442960667a0, count: -3 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x1c: addq $0x8,%rsp db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8285927d) at panic+0x17b sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806f160008,20002000,20003000) at uvm_fault_unwire_locked+0x321 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd806f160008,20002000,20003000) at uvm_fault_unwire+0x43 sys/uvm/uvm_fault.c:1623 sys_sysctl(ffff80002a1cdd60,ffff80002d4f81a0,ffff80002d4f81f0) at sys_sysctl+0x239 sys/kern/kern_sysctl.c:259 syscall(ffff80002d4f8270) at syscall+0x4e6 sys/arch/amd64/amd64/trap.c:606 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75d9f63df0, count: 8 ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8285927d) at panic+0x17b sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806f160008,20002000,20003000) at uvm_fault_unwire_locked+0x321 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd806f160008,20002000,20003000) at uvm_fault_unwire+0x43 sys/uvm/uvm_fault.c:1623 sys_sysctl(ffff80002a1cdd60,ffff80002d4f81a0,ffff80002d4f81f0) at sys_sysctl+0x239 sys/kern/kern_sysctl.c:259 syscall(ffff80002d4f8270) at syscall+0x4e6 sys/arch/amd64/amd64/trap.c:606 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75d9f63df0, count: -7