panic: uvm_fault_unwire_locked: address not in map Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *491855 2326 32767 0x10 0x4000000 0 syz-executor.4 436428 66187 32767 0x10 0 1 syz-executor.0 db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8286162d) at panic+0x17b sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd8069d7b020,20002000,20003000) at uvm_fault_unwire_locked+0x321 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd8069d7b020,20002000,20003000) at uvm_fault_unwire+0x43 sys/uvm/uvm_fault.c:1623 sys_sysctl(ffff8000246f9a90,ffff8000246ef0f0,ffff8000246ef140) at sys_sysctl+0x239 sys/kern/kern_sysctl.c:259 syscall(ffff8000246ef1c0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff8000246ef1c0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2c043df13a0, 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(ffffffff8286162d) at panic+0x17b sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd8069d7b020,20002000,20003000) at uvm_fault_unwire_locked+0x321 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd8069d7b020,20002000,20003000) at uvm_fault_unwire+0x43 sys/uvm/uvm_fault.c:1623 sys_sysctl(ffff8000246f9a90,ffff8000246ef0f0,ffff8000246ef140) at sys_sysctl+0x239 sys/kern/kern_sysctl.c:259 syscall(ffff8000246ef1c0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff8000246ef1c0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2c043df13a0, count: -7 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff8000246eeec0 rbx 0xffffffff82c2dba7 cpu_info_full_primary+0x2ba7 rdx 0 rcx 0xffff8000246f9a90 rax 0xffffffff82c2cff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xe8d63f1f32e5866d r11 0x4bad9025ad2a2ad7 r12 0xffffffff82c2d9a8 cpu_info_full_primary+0x29a8 r13 0 r14 0 r15 0x1 rip 0xffffffff81be1a9c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff8000246eeeb0 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.4) tid=491855 pid=2326 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=0xffff80002125a2c8,0xffff8000246f8010 process=0xffff80002127e198 user=0xffff8000246ea000, vmspace=0xfffffd8069d7b020 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 49212 481380 14121 32767 2 0x10 syz-executor.1 49212 283549 14121 32767 2 0x4000010 syz-executor.1 49212 201879 14121 32767 2 0x4000010 syz-executor.1 2326 339495 62455 32767 2 0x10 syz-executor.4 2326 213914 62455 32767 2 0x4000010 syz-executor.4 * 2326 491855 62455 32767 7 0x4000010 syz-executor.4 2326 154936 62455 32767 3 0x4000090 fsleep syz-executor.4 69920 358887 72409 32767 2 0x10 syz-executor.5 69920 368052 72409 32767 3 0x4000090 fsleep syz-executor.5 69920 311016 72409 32767 3 0x4000090 fsleep syz-executor.5 92487 515553 66187 32767 2 0x10 syz-executor.0 92487 100550 66187 32767 2 0x4000010 syz-executor.0 51129 337688 51067 32767 2 0x10 syz-executor.3 51067 306278 12191 0 3 0x82 wait syz-executor.3 62455 400329 25729 32767 3 0x90 nanoslp syz-executor.4 25729 439162 12191 0 3 0x82 wait syz-executor.4 66187 436428 25786 32767 7 0x10 syz-executor.0 25786 372892 12191 0 3 0x82 wait syz-executor.0 14121 166963 42727 32767 3 0x90 nanoslp syz-executor.1 42727 326640 12191 0 3 0x82 wait syz-executor.1 78525 198055 75708 32767 3 0x90 piperd syz-executor.7 75708 80689 12191 0 3 0x82 wait syz-executor.7 81690 188558 39078 32767 3 0x90 nanoslp syz-executor.2 39078 146897 12191 0 3 0x82 wait syz-executor.2 59457 282194 60547 32767 3 0x90 piperd syz-executor.6 60547 99266 12191 0 3 0x82 wait syz-executor.6 72409 187874 88406 32767 3 0x90 nanoslp syz-executor.5 88406 187296 12191 0 3 0x82 wait syz-executor.5 77261 508417 0 0 3 0x14200 bored sosplice 12191 437826 65882 0 3 0x2000082 wait syz-fuzzer 12191 385724 65882 0 3 0x6000082 nanoslp syz-fuzzer 12191 294700 65882 0 3 0x6000082 thrsleep syz-fuzzer 12191 397873 65882 0 3 0x6000082 thrsleep syz-fuzzer 12191 442406 65882 0 3 0x6000082 wait syz-fuzzer 12191 292708 65882 0 3 0x6000082 wait syz-fuzzer 12191 309060 65882 0 3 0x6000082 kqread syz-fuzzer 12191 17644 65882 0 3 0x6000082 wait syz-fuzzer 12191 341793 65882 0 3 0x6000082 thrsleep syz-fuzzer 12191 12733 65882 0 3 0x6000082 thrsleep syz-fuzzer 12191 464369 65882 0 3 0x6000082 wait syz-fuzzer 12191 138768 65882 0 3 0x6000082 wait syz-fuzzer 12191 474338 65882 0 3 0x6000082 wait syz-fuzzer 12191 336995 65882 0 3 0x6000082 wait syz-fuzzer 12191 500068 65882 0 3 0x6000082 thrsleep syz-fuzzer 12191 299741 65882 0 3 0x6000082 thrsleep syz-fuzzer 65882 486506 87473 0 3 0x10008a sigsusp ksh 87473 324776 21898 0 3 0x9a kqread sshd 42155 144939 1 0 3 0x100083 ttyin getty 21898 209435 1 0 3 0x88 kqread sshd 42287 348146 95764 73 3 0x1100090 kqread syslogd 95764 103369 1 0 3 0x100082 netio syslogd 75064 328380 1 0 3 0x100080 kqread resolvd 14240 112326 80049 77 3 0x100092 kqread dhcpleased 66591 109264 80049 77 3 0x100092 kqread dhcpleased 80049 208291 1 0 3 0x80 kqread dhcpleased 41902 327226 0 0 3 0x14200 bored smr 75213 8435 0 0 2 0x14200 zerothread 44876 356975 0 0 3 0x14200 aiodoned aiodoned 59216 106879 0 0 3 0x14200 syncer update 1162 260412 0 0 3 0x14200 cleaner cleaner 5036 416206 0 0 3 0x14200 reaper reaper 67781 490344 0 0 3 0x14200 pgdaemon pagedaemon 85964 311234 0 0 3 0x14200 bored viomb 49595 436155 0 0 3 0x40014200 acpi0 acpi0 45469 409535 0 0 3 0x40014200 idle1 29010 247538 0 0 3 0x14200 bored softnet3 38879 235018 0 0 3 0x14200 bored softnet2 75397 46738 0 0 3 0x14200 bored softnet1 76462 2633 0 0 3 0x14200 bored softnet0 99405 441616 0 0 3 0x14200 bored systqmp 98938 212504 0 0 3 0x14200 bored systq 16887 185464 0 0 3 0x14200 tmoslp softclockmp 97520 259072 0 0 3 0x40014200 tmoslp softclock 8440 425334 0 0 3 0x40014200 idle0 1 150757 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 2326 (syz-executor.4) thread 0xffff80002125a2c8 (213914) exclusive rwlock amaplk r = 0 (0xfffffd806b9e0940) #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+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] #4 syscall+0x606 sys/arch/amd64/amd64/trap.c:623 #5 Xsyscall+0x128 Process 2326 (syz-executor.4) thread 0xffff8000246f9a90 (491855) shared rwlock vmmaplk r = 0 (0xfffffd8069d7b118) #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+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #4 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #5 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82d6c010) #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+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #7 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #8 Xsyscall+0x128 exclusive rwlock sysctllk r = 0 (0xffffffff82c42200) #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+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #3 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #4 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10227 6414K 6420K 78643K 11475 0 pcb 13 16K 20K 78643K 19 0 rtable 244 6K 7K 78643K 3878 0 pf 29 8K 8K 78643K 141 0 ifaddr 44 16K 16K 78643K 276 0 ifgroup 50 2K 2K 78643K 274 0 sysctl 4 1K 5K 78643K 11 0 counters 60 35K 35K 78643K 172 0 ioctlops 0 0K 2K 78643K 280 0 iov 0 0K 32K 78643K 7481 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1279 80K 80K 78643K 5910 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 382 0 VM map 2 1K 1K 78643K 2 0 sem 11 1K 1K 78643K 51 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 22 81K 117K 78643K 24213 0 sigio 0 0K 0K 78643K 254 0 proc 56 78K 115K 78643K 3589 0 subproc 104 6K 6K 78643K 832 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 4879 0 in_multi 99 7K 7K 78643K 920 0 ether_multi 1 0K 0K 78643K 52 0 mrt 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 301 1341K 1341K 78643K 301 0 exec 0 0K 1K 78643K 4187 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 8 62K 64K 78643K 10 0 UVM amap 434 92K 109K 78643K 238143 0 UVM aobj 131 4K 4K 78643K 134 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 502 0 NDP 11 0K 2K 78643K 195 0 temp 74 5920K 6048K 78643K 62959 0 kqueue 12 18K 29K 78643K 1811 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 2480 0 2477 21 20 1 5 0 8 0 rtentry 112 770 0 655 4 0 4 4 0 8 0 unpcb 144 52598 0 52585 244 240 4 16 0 8 3 syncache 312 281 0 281 37 36 1 1 0 8 1 tcpqe 32 457 0 457 36 35 1 1 0 8 1 tcpcb 808 12083 0 12040 241 233 8 19 0 8 3 arp 120 136 0 117 1 0 1 1 0 8 0 ipq 40 25 0 25 9 8 1 1 0 8 1 ipqe 40 74 0 74 9 8 1 1 0 8 1 inpcb 368 20790 0 20742 271 263 8 27 0 8 1 nd6 136 229 0 201 7 6 1 2 0 8 0 kcovpl 48 64 0 56 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 3064 0 2583 34 3 31 31 0 8 0 art_table 32 3065 0 2583 5 1 4 5 0 8 0 art_node 16 769 0 664 1 0 1 1 0 8 0 semupl 112 9 0 9 2 2 0 1 0 8 0 semapl 112 9 0 0 1 0 1 1 0 8 0 shmpl 112 131 0 3 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 32883 0 31402 93 0 93 93 0 8 0 ffsino 272 32883 0 31402 100 0 100 100 0 8 0 nchpl 144 64887 0 63244 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 218596 0 218596 3 2 1 2 0 8 1 percpumem 16 99 0 56 1 0 1 1 0 8 0 kstatmem 264 134 0 112 2 0 2 2 0 8 0 scxspl 216 193079 0 193079 72 69 3 8 1 8 3 plimitpl 152 3614 0 3591 29 28 1 2 0 8 0 sigapl 424 24398 0 24344 10 3 7 7 0 8 0 futexpl 64 219767 0 219764 2 1 1 1 0 8 0 knotepl 120 1200 0 0 20 0 20 20 0 8 0 kqueuepl 216 4515 0 4507 83 80 3 8 0 8 2 pipepl 320 6187 0 6159 141 135 6 13 0 8 3 fdescpl 496 24379 0 24346 7 2 5 6 0 8 0 filepl 152 188246 0 188012 307 293 14 28 0 8 4 lockfpl 104 4252 0 4250 2 1 1 2 0 8 0 lockfspl 48 1012 0 1010 1 0 1 1 0 8 0 sessionpl 144 79 0 63 1 0 1 1 0 8 0 pgrppl 48 419 0 403 1 0 1 1 0 8 0 ucredpl 104 22419 0 22401 1 0 1 1 0 8 0 zombiepl 144 24346 0 24344 1 0 1 1 0 8 0 processpl 1072 24398 0 24344 5 1 4 5 0 8 0 procpl 680 67141 0 67064 30 22 8 9 0 8 1 sosppl 168 324 0 323 20 19 1 1 0 8 0 sockpl 488 79408 0 79343 1367 1349 18 60 0 8 5 mcl64k 65536 45 0 0 3 0 3 3 0 8 0 mcl16k 16384 25 0 0 3 0 3 3 0 8 0 mcl12k 12288 41 0 0 3 1 2 2 0 8 0 mcl9k 9216 25 0 0 2 0 2 2 0 8 0 mcl8k 8192 81 0 0 6 3 3 5 0 8 0 mcl4k 4096 38 0 0 3 0 3 3 0 8 0 mcl2k2 2112 17 0 0 2 0 2 2 0 8 0 mcl2k 2048 423 0 0 35 19 16 35 0 8 0 mtagpl 96 20 0 0 1 0 1 1 0 8 0 mbufpl 256 1757 0 0 92 0 92 92 0 8 0 bufpl 288 45564 0 39243 452 0 452 452 0 8 0 anonpl 24 2291951 0 2280524 263 170 93 118 0 186 0 amapchunkpl 152 758683 0 757809 181 142 39 52 0 158 2 amappl16 200 45065 0 44754 280 262 18 40 0 8 0 amappl15 192 37 0 36 1 0 1 1 0 8 0 amappl14 184 358 0 344 2 1 1 2 0 8 0 amappl13 176 21 0 21 5 5 0 1 0 8 0 amappl12 168 25853 0 25814 2 0 2 2 0 8 0 amappl11 160 51 0 41 1 0 1 1 0 8 0 amappl10 152 85 0 75 2 1 1 1 0 8 0 amappl9 144 477 0 475 1 0 1 1 0 8 0 amappl8 136 987 0 807 7 0 7 7 0 8 0 amappl7 128 372 0 345 2 0 2 2 0 8 0 amappl6 120 1420 0 1397 1 0 1 1 0 8 0 amappl5 112 647 0 639 1 0 1 1 0 8 0 amappl4 104 1318 0 1283 6 4 2 2 0 8 0 amappl3 96 145950 0 145853 36 32 4 4 0 8 1 amappl2 88 26583 0 26498 4 2 2 3 0 8 0 amappl1 80 95988 0 95465 22 10 12 22 0 8 0 amappl 88 236424 0 236163 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 72 133 0 3 3 0 3 3 0 8 0 uaddrrnd 24 24379 0 24346 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 24379 0 24346 1 0 1 1 0 8 0 vmmpekpl 168 190828 0 190772 4 0 4 4 0 8 0 vmmpepl 168 1421554 0 1419111 323 196 127 132 0 357 0 vmsppl 464 24378 0 24346 7 2 5 6 0 8 0 rwobjpl 56 344490 0 336976 130 20 110 111 0 8 0 pdppl 4096 48766 0 48692 806 724 82 92 0 8 8 pvpl 32 6613798 0 6596146 674 508 166 362 0 265 0 pmappl 248 24378 0 24346 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 2216 0 1307 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(ffffffff8286162d) at panic+0x17b sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd8069d7b020,20002000,20003000) at uvm_fault_unwire_locked+0x321 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd8069d7b020,20002000,20003000) at uvm_fault_unwire+0x43 sys/uvm/uvm_fault.c:1623 sys_sysctl(ffff8000246f9a90,ffff8000246ef0f0,ffff8000246ef140) at sys_sysctl+0x239 sys/kern/kern_sysctl.c:259 syscall(ffff8000246ef1c0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff8000246ef1c0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2c043df13a0, count: -7 ddb{0}> machine ddbcpu 1