panic: uvm_fault_unwire_locked: address not in map Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 18439 35024 32767 0x10 0 1 syz-executor.2 *237041 35024 32767 0x10 0x4000000 0 syz-executor.2 db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82860e34) at panic+0x17b sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd80671ac940,20002000,20003000) at uvm_fault_unwire_locked+0x321 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd80671ac940,20002000,20003000) at uvm_fault_unwire+0x43 sys/uvm/uvm_fault.c:1623 sys_sysctl(ffff8000211e5d50,ffff80002e4214b0,ffff80002e421500) at sys_sysctl+0x239 sys/kern/kern_sysctl.c:259 syscall(ffff80002e421580) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e421580) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd55e005f140, 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(ffffffff82860e34) at panic+0x17b sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd80671ac940,20002000,20003000) at uvm_fault_unwire_locked+0x321 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd80671ac940,20002000,20003000) at uvm_fault_unwire+0x43 sys/uvm/uvm_fault.c:1623 sys_sysctl(ffff8000211e5d50,ffff80002e4214b0,ffff80002e421500) at sys_sysctl+0x239 sys/kern/kern_sysctl.c:259 syscall(ffff80002e421580) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e421580) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd55e005f140, count: -7 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002e421280 rbx 0xffffffff82bfaba7 cpu_info_full_primary+0x2ba7 rdx 0 rcx 0xffff8000211e5d50 rax 0xffffffff82bf9ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x1041ca7f48a8b073 r11 0xaebd09e9ecb6457a r12 0xffffffff82bfa9a8 cpu_info_full_primary+0x29a8 r13 0 r14 0 r15 0x1 rip 0xffffffff8105869c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002e421270 ss 0 db_enter+0x1c: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.2) tid=237041 pid=35024 tcnt=3 stat=onproc flags process=10 proc=4000000 runpri=36, usrpri=50, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002126bd38,0xffffffff82cab208 process=0xffff8000ffff9d58 user=0xffff80002e41c000, vmspace=0xfffffd80671ac940 estcpu=0, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 11401 186781 59996 32767 2 0x10 syz-executor.4 35024 18439 93180 32767 7 0x10 syz-executor.2 35024 408593 93180 32767 3 0x4000090 fsleep syz-executor.2 *35024 237041 93180 32767 7 0x4000010 syz-executor.2 95687 146584 24854 32767 2 0x10 syz-executor.1 95687 279304 24854 32767 2 0x4000010 syz-executor.1 95687 273450 24854 32767 3 0x4000090 fsleep syz-executor.1 55873 395695 85095 32767 3 0x90 nanoslp syz-executor.0 55873 82677 85095 32767 3 0x4000090 fsleep syz-executor.0 55873 168552 85095 32767 3 0x4000090 fsleep syz-executor.0 55873 152635 85095 32767 3 0x4000090 netcon syz-executor.0 63254 495787 67242 32767 3 0x90 nanoslp syz-executor.5 63254 347915 67242 32767 3 0x4000090 netio syz-executor.5 63254 471405 67242 32767 3 0x4000090 fsleep syz-executor.5 63254 521436 67242 32767 3 0x4000090 fsleep syz-executor.5 1645 50230 0 0 3 0x14200 bored sosplice 87575 242537 54933 32767 3 0x90 piperd syz-executor.7 86430 408475 11364 32767 3 0x90 piperd syz-executor.6 54933 321485 93048 0 3 0x82 wait syz-executor.7 59996 41592 9040 32767 3 0x90 nanoslp syz-executor.4 9040 273119 93048 0 3 0x82 wait syz-executor.4 11364 346931 93048 0 3 0x82 wait syz-executor.6 67242 156967 82367 32767 3 0x90 nanoslp syz-executor.5 82367 76324 93048 0 3 0x82 wait syz-executor.5 60474 246264 44087 32767 3 0x90 piperd syz-executor.3 44087 143321 93048 0 3 0x82 wait syz-executor.3 93180 65112 1950 32767 3 0x90 nanoslp syz-executor.2 85095 108751 88900 32767 3 0x90 nanoslp syz-executor.0 24854 36867 53523 32767 3 0x90 nanoslp syz-executor.1 1950 253244 93048 0 3 0x82 wait syz-executor.2 53523 510579 93048 0 3 0x82 wait syz-executor.1 88900 72475 93048 0 3 0x82 wait syz-executor.0 93048 192075 17232 0 3 0x2000082 wait syz-fuzzer 93048 438098 17232 0 2 0x6000002 syz-fuzzer 93048 503284 17232 0 3 0x6000082 wait syz-fuzzer 93048 286957 17232 0 3 0x6000082 thrsleep syz-fuzzer 93048 66528 17232 0 3 0x6000082 wait syz-fuzzer 93048 101469 17232 0 3 0x6000082 wait syz-fuzzer 93048 34859 17232 0 3 0x6000082 thrsleep syz-fuzzer 93048 412143 17232 0 3 0x6000082 wait syz-fuzzer 93048 143907 17232 0 3 0x6000082 thrsleep syz-fuzzer 93048 279296 17232 0 3 0x6000082 wait syz-fuzzer 93048 78000 17232 0 3 0x6000082 thrsleep syz-fuzzer 93048 151294 17232 0 3 0x6000082 wait syz-fuzzer 93048 501312 17232 0 3 0x6000082 wait syz-fuzzer 93048 485551 17232 0 3 0x6000082 thrsleep syz-fuzzer 93048 483878 17232 0 3 0x6000082 kqread syz-fuzzer 17232 344775 29078 0 3 0x10008a sigsusp ksh 29078 22303 85965 0 3 0x9a kqread sshd 42007 200270 1 0 3 0x100083 ttyin getty 85965 92229 1 0 3 0x88 kqread sshd 14030 29640 29261 73 3 0x1100090 kqread syslogd 29261 45414 1 0 3 0x100082 netio syslogd 67468 242089 1 0 3 0x100080 kqread resolvd 4206 36719 79027 77 3 0x100092 kqread dhcpleased 93463 198400 79027 77 3 0x100092 kqread dhcpleased 79027 299767 1 0 3 0x80 kqread dhcpleased 48341 145446 0 0 3 0x14200 bored smr 45556 521470 0 0 2 0x14200 zerothread 66823 242 0 0 3 0x14200 aiodoned aiodoned 82980 195323 0 0 3 0x14200 syncer update 49401 416257 0 0 3 0x14200 cleaner cleaner 24551 441844 0 0 3 0x14200 reaper reaper 67428 143326 0 0 3 0x14200 pgdaemon pagedaemon 89493 306589 0 0 3 0x14200 bored viomb 89131 392589 0 0 3 0x40014200 acpi0 acpi0 3713 32374 0 0 3 0x40014200 idle1 5897 120124 0 0 3 0x14200 bored softnet3 7740 455682 0 0 3 0x14200 bored softnet2 74239 8702 0 0 3 0x14200 bored softnet1 95438 39742 0 0 3 0x14200 bored softnet0 82645 509973 0 0 3 0x14200 bored systqmp 270 16925 0 0 3 0x14200 bored systq 59628 267387 0 0 3 0x14200 tmoslp softclockmp 26342 189914 0 0 3 0x40014200 tmoslp softclock 83905 378695 0 0 3 0x40014200 idle0 1 89120 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 35024 (syz-executor.2) thread 0xffff80002126bd38 (408593) exclusive rwlock amaplk r = 0 (0xfffffd8069405f60) #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 35024 (syz-executor.2) thread 0xffff8000211e5d50 (237041) shared rwlock vmmaplk r = 0 (0xfffffd80671aca38) #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 (0xffffffff82d1aa78) #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 (0xffffffff82bb4500) #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 10189 6409K 6421K 78643K 11267 0 pcb 13 8K 8K 78643K 13 0 rtable 234 6K 6K 78643K 359 0 pf 29 8K 8K 78643K 29 0 ifaddr 44 15K 15K 78643K 46 0 ifgroup 50 2K 2K 78643K 50 0 counters 62 36K 36K 78643K 62 0 ioctlops 0 0K 2K 78643K 29 0 iov 0 0K 0K 78643K 47 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1278 80K 80K 78643K 1297 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 15 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 27 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 23 85K 125K 78643K 465 0 sigio 0 0K 0K 78643K 235 0 proc 56 78K 115K 78643K 489 0 subproc 104 6K 6K 78643K 104 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 99 7K 7K 78643K 99 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 55 254K 254K 78643K 55 0 exec 0 0K 1K 78643K 377 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 342 81K 82K 78643K 6866 0 UVM aobj 21 2K 2K 78643K 21 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 6 0 NDP 11 0K 2K 78643K 27 0 temp 74 5924K 5988K 78643K 4934 0 kqueue 13 20K 24K 78643K 67 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 48 0 45 1 0 1 1 0 8 0 rtentry 112 111 0 1 4 0 4 4 0 8 0 unpcb 144 557 0 475 7 3 4 4 0 8 0 syncache 312 6 0 6 2 1 1 1 0 8 1 tcpqe 32 151 0 151 2 1 1 1 0 8 1 tcpcb 808 201 0 130 14 6 8 8 0 8 0 arp 120 18 0 0 1 0 1 1 0 8 0 ipq 40 2 0 2 1 1 0 1 0 8 0 ipqe 40 4 0 4 1 1 0 1 0 8 0 inpcb 368 362 0 287 13 6 7 7 0 8 0 nd6 136 24 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 453 0 0 29 0 29 29 0 8 0 art_table 32 454 0 0 4 0 4 4 0 8 0 art_node 16 110 0 10 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 25 0 15 1 0 1 1 0 8 0 shmpl 112 18 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1846 0 405 91 0 91 91 0 8 0 ffsino 272 1846 0 405 97 0 97 97 0 8 0 nchpl 144 2540 0 864 63 0 63 63 0 8 0 uvmvnodes 80 1959 0 0 40 0 40 40 0 8 0 vnodes 216 1959 0 0 109 0 109 109 0 8 0 namei 1024 8313 0 8313 2 1 1 2 0 8 1 percpumem 16 44 0 0 1 0 1 1 0 8 0 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 8571 0 8571 10 9 1 8 1 8 1 plimitpl 152 55 0 31 1 0 1 1 0 8 0 sigapl 424 766 0 713 7 0 7 7 0 8 0 futexpl 64 2960 0 2954 1 0 1 1 0 8 0 knotepl 120 232 0 0 8 0 8 8 0 8 0 kqueuepl 216 114 0 105 3 2 1 3 0 8 0 pipepl 320 178 0 149 3 0 3 3 0 8 0 fdescpl 496 747 0 713 7 1 6 6 0 8 0 filepl 152 3681 0 3303 19 3 16 16 0 8 0 lockfpl 104 29 0 27 1 0 1 1 0 8 0 lockfspl 48 14 0 12 1 0 1 1 0 8 0 sessionpl 144 23 0 7 1 0 1 1 0 8 0 pgrppl 48 35 0 19 1 0 1 1 0 8 0 ucredpl 104 255 0 237 1 0 1 1 0 8 0 zombiepl 144 713 0 713 1 0 1 1 0 8 1 processpl 1072 766 0 713 5 1 4 5 0 8 0 procpl 680 1420 0 1343 9 1 8 8 0 8 1 sosppl 168 2 0 2 1 1 0 1 0 8 0 sockpl 488 973 0 813 35 12 23 23 0 8 0 mcl64k 65536 10 0 0 2 0 2 2 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 9 0 0 2 0 2 2 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 250 0 0 32 0 32 32 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 306 0 0 19 0 19 19 0 8 0 bufpl 288 4354 0 133 302 0 302 302 0 8 0 anonpl 24 212761 0 201951 74 7 67 74 0 186 0 amapchunkpl 152 22188 0 21302 42 4 38 40 0 158 1 amappl16 200 5383 0 5114 15 0 15 15 0 8 0 amappl15 192 20 0 19 1 0 1 1 0 8 0 amappl14 184 149 0 138 2 1 1 2 0 8 0 amappl13 176 7 0 7 1 1 0 1 0 8 0 amappl12 168 1385 0 1348 3 0 3 3 0 8 0 amappl11 160 49 0 38 1 0 1 1 0 8 0 amappl10 152 38 0 29 1 0 1 1 0 8 0 amappl9 144 158 0 157 1 0 1 1 0 8 0 amappl8 136 245 0 188 3 0 3 3 0 8 1 amappl7 128 180 0 159 2 0 2 2 0 8 0 amappl6 120 279 0 264 1 0 1 1 0 8 0 amappl5 112 128 0 119 1 0 1 1 0 8 0 amappl4 104 434 0 411 3 2 1 3 0 8 0 amappl3 96 4550 0 4451 3 0 3 3 0 8 0 amappl2 88 1192 0 1115 3 1 2 3 0 8 0 amappl1 80 10834 0 10309 22 9 13 22 0 8 0 amappl 88 6349 0 6104 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 20 0 0 1 0 1 1 0 8 0 uaddrrnd 24 747 0 713 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 747 0 713 1 0 1 1 0 8 0 vmmpekpl 168 11457 0 11398 3 0 3 3 0 8 0 vmmpepl 168 65741 0 63475 127 19 108 126 0 357 2 vmsppl 464 746 0 713 7 1 6 6 0 8 0 rwobjpl 56 25026 0 21767 49 2 47 47 0 8 0 pdppl 4096 1502 0 1426 120 38 82 96 0 8 6 pvpl 32 474855 0 458218 358 41 317 355 0 265 178 pmappl 248 746 0 713 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 745 0 55 20 0 20 20 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(ffffffff82860e34) at panic+0x17b sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd80671ac940,20002000,20003000) at uvm_fault_unwire_locked+0x321 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd80671ac940,20002000,20003000) at uvm_fault_unwire+0x43 sys/uvm/uvm_fault.c:1623 sys_sysctl(ffff8000211e5d50,ffff80002e4214b0,ffff80002e421500) at sys_sysctl+0x239 sys/kern/kern_sysctl.c:259 syscall(ffff80002e421580) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e421580) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd55e005f140, count: -7 ddb{0}> machine ddbcpu 1