panic: uvm_fault_unwire_locked: address not in map Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *510334 7429 32767 0x10 0x4000000 0K syz-executor.7 440977 91938 32767 0x10 0 1 syz-executor.4 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82804882) at panic+0x177 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806cdc36f8,20000000,20011000) at uvm_fault_unwire_locked+0x321 sys/uvm/uvm_fault.c:1651 uvm_fault_unwire(fffffd806cdc36f8,20000000,20011000) at uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1611 sys_sysctl(ffff8000212d2598,ffff800024719bd8,ffff800024719c20) at sys_sysctl+0x229 sys/kern/kern_sysctl.c:255 syscall(ffff800024719ca0) at syscall+0x555 mi_syscall sys/sys/syscall_mi.h:113 [inline] syscall(ffff800024719ca0) at syscall+0x555 sys/arch/amd64/amd64/trap.c:626 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x68fde4adc30, 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+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82804882) at panic+0x177 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806cdc36f8,20000000,20011000) at uvm_fault_unwire_locked+0x321 sys/uvm/uvm_fault.c:1651 uvm_fault_unwire(fffffd806cdc36f8,20000000,20011000) at uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1611 sys_sysctl(ffff8000212d2598,ffff800024719bd8,ffff800024719c20) at sys_sysctl+0x229 sys/kern/kern_sysctl.c:255 syscall(ffff800024719ca0) at syscall+0x555 mi_syscall sys/sys/syscall_mi.h:113 [inline] syscall(ffff800024719ca0) at syscall+0x555 sys/arch/amd64/amd64/trap.c:626 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x68fde4adc30, count: -7 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff8000247199a0 rbx 0xffffffff82bdab8f cpu_info_full_primary+0x2b8f rdx 0 rcx 0 rax 0xffff8000212d2598 r8 0x101010101010101 r9 0x8080808080808080 r10 0xbb05541ab7b9fbe8 r11 0x24889374c2f66f61 r12 0xffffffff82bda990 cpu_info_full_primary+0x2990 r13 0 r14 0 r15 0x1 rip 0xffffffff826600d8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800024719990 ss 0 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.7) pid=510334 stat=onproc flags process=10 proc=4000000 pri=17, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff800024f422f0,0xffff800027b74050 process=0xffff800027ba5d68 user=0xffff800024714000, vmspace=0xfffffd806cdc36f8 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 94112 435163 7025 32767 2 0x10 syz-executor.3 94112 447695 7025 32767 2 0x4000010 syz-executor.3 7429 53798 19040 32767 2 0x10 syz-executor.7 * 7429 510334 19040 32767 7 0x4000010 syz-executor.7 7429 516633 19040 32767 2 0x4000010 syz-executor.7 7429 118521 19040 32767 3 0x4000090 fsleep syz-executor.7 75081 309113 63812 32767 3 0x4003010 suspend syz-executor.2 75081 487572 63812 32767 2 0x4081010 syz-executor.2 26224 89337 96828 32767 3 0x90 nanoslp syz-executor.1 26224 60453 96828 32767 3 0x4000090 fsleep syz-executor.1 26224 263477 96828 32767 3 0x4000090 fsleep syz-executor.1 26224 276192 96828 32767 2 0x4000010 syz-executor.1 33214 283346 48960 32767 2 0x10 syz-executor.5 33214 26792 48960 32767 3 0x4000090 fsleep syz-executor.5 33214 13487 48960 32767 3 0x4000090 fsleep syz-executor.5 33214 201202 48960 32767 3 0x4000090 fsleep syz-executor.5 63812 170235 54479 32767 3 0x90 nanoslp syz-executor.2 54479 499758 96180 0 3 0x82 wait syz-executor.2 7424 403848 0 0 3 0x14200 bored sosplice 19040 152926 40010 32767 3 0x90 nanoslp syz-executor.7 91938 440977 54610 32767 7 0x10 syz-executor.4 32597 407389 37969 32767 2 0x10 syz-executor.6 48960 104267 31319 32767 3 0x90 nanoslp syz-executor.5 40010 199446 96180 0 3 0x82 wait syz-executor.7 37969 8751 96180 0 3 0x82 wait syz-executor.6 31319 25081 96180 0 3 0x82 wait syz-executor.5 54610 3060 96180 0 3 0x82 wait syz-executor.4 7025 156747 70211 32767 3 0x90 nanoslp syz-executor.3 70211 48875 96180 0 3 0x82 wait syz-executor.3 96828 159557 84586 32767 3 0x90 nanoslp syz-executor.1 84586 523279 96180 0 3 0x82 wait syz-executor.1 57106 334909 21897 32767 2 0x10 syz-executor.0 21897 7222 96180 0 3 0x82 wait syz-executor.0 96180 10723 81043 0 3 0x82 kqread syz-fuzzer 96180 516336 81043 0 3 0x4000082 nanoslp syz-fuzzer 96180 254089 81043 0 3 0x4000082 thrsleep syz-fuzzer 96180 145440 81043 0 3 0x4000082 wait syz-fuzzer 96180 345436 81043 0 3 0x4000082 wait syz-fuzzer 96180 198179 81043 0 3 0x4000082 wait syz-fuzzer 96180 491504 81043 0 3 0x4000082 wait syz-fuzzer 96180 408221 81043 0 3 0x4000082 wait syz-fuzzer 96180 24238 81043 0 3 0x4000082 thrsleep syz-fuzzer 96180 145960 81043 0 3 0x4000082 wait syz-fuzzer 96180 162204 81043 0 3 0x4000082 thrsleep syz-fuzzer 96180 119623 81043 0 3 0x4000082 wait syz-fuzzer 96180 453407 81043 0 3 0x4000082 thrsleep syz-fuzzer 96180 515794 81043 0 3 0x4000082 thrsleep syz-fuzzer 96180 463417 81043 0 3 0x4000082 wait syz-fuzzer 96180 94297 81043 0 3 0x4000082 thrsleep syz-fuzzer 81043 94413 6890 0 3 0x10008a sigsusp ksh 6890 275842 46058 0 3 0x9a kqread sshd 55926 267594 1 0 3 0x100083 ttyin getty 46058 276189 1 0 3 0x88 kqread sshd 19819 334071 1491 73 3 0x1100090 kqread syslogd 1491 25372 1 0 3 0x100082 netio syslogd 66431 94650 1 0 3 0x100080 kqread resolvd 2439 238678 7726 77 3 0x100092 kqread dhcpleased 69655 89783 7726 77 3 0x100092 kqread dhcpleased 7726 297685 1 0 3 0x80 kqread dhcpleased 58513 512718 0 0 3 0x14200 bored smr 1716 480150 0 0 2 0x14200 zerothread 4738 494989 0 0 3 0x14200 aiodoned aiodoned 9211 223192 0 0 3 0x14200 syncer update 5748 82779 0 0 3 0x14200 cleaner cleaner 32076 276512 0 0 3 0x14200 reaper reaper 75635 500583 0 0 3 0x14200 pgdaemon pagedaemon 13243 15541 0 0 3 0x14200 bored viomb 18220 126320 0 0 3 0x40014200 acpi0 acpi0 5068 38440 0 0 3 0x40014200 idle1 68554 214532 0 0 3 0x14200 bored softnet 89945 184024 0 0 3 0x14200 bored softnet 51922 120932 0 0 3 0x14200 bored softnet 62095 344247 0 0 3 0x14200 bored softnet 21578 287842 0 0 3 0x14200 bored systqmp 61104 456682 0 0 3 0x14200 bored systq 94975 447517 0 0 3 0x40014200 bored softclock 42106 482669 0 0 3 0x40014200 idle0 1 185044 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 7429 (syz-executor.7) thread 0xffff8000212d2598 (510334) shared rwlock vmmaplk r = 0 (0xfffffd806cdc37e8) #0 witness_lock+0x44d #1 uvm_fault_unwire+0x31 sys/uvm/uvm_fault.c:1610 #2 sys_sysctl+0x229 sys/kern/kern_sysctl.c:255 #3 syscall+0x555 mi_syscall sys/sys/syscall_mi.h:113 [inline] #3 syscall+0x555 sys/arch/amd64/amd64/trap.c:626 #4 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82c054d0) #0 witness_lock+0x44d #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x3bb sys/kern/sched_bsd.c:415 #3 sleep_finish+0x180 sys/kern/kern_synch.c:417 #4 tsleep+0x12c sys/kern/kern_synch.c:155 #5 getblk+0x13c sys/kern/vfs_bio.c:1028 #6 bread+0x3a bio_doread sys/kern/vfs_bio.c:433 [inline] #6 bread+0x3a sys/kern/vfs_bio.c:478 #7 ffs_update+0x14b sys/ufs/ffs/ffs_inode.c:91 #8 ufs_inactive+0x25f sys/ufs/ufs/ufs_inode.c:110 #9 VOP_INACTIVE+0xc4 sys/kern/vfs_vops.c:489 #10 vrele+0xd2 sys/kern/vfs_subr.c:827 #11 vfs_getcwd_scandir+0x3e7 sys/kern/vfs_getcwd.c:200 #12 vfs_getcwd_common+0x261 sys/kern/vfs_getcwd.c:353 #13 sysctl_proc_cwd+0x1f2 sys/kern/kern_sysctl.c:1992 #14 kern_sysctl+0x107 sys/kern/kern_sysctl.c:455 #15 sys_sysctl+0x209 sys/kern/kern_sysctl.c:250 #16 syscall+0x555 mi_syscall sys/sys/syscall_mi.h:113 [inline] #16 syscall+0x555 sys/arch/amd64/amd64/trap.c:626 #17 Xsyscall+0x128 exclusive rwlock sysctllk r = 0 (0xffffffff82b598e0) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 sys_sysctl+0x1b3 sys/kern/kern_sysctl.c:234 #3 syscall+0x555 mi_syscall sys/sys/syscall_mi.h:113 [inline] #3 syscall+0x555 sys/arch/amd64/amd64/trap.c:626 #4 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10220 6412K 6421K 78643K 11317 0 pcb 13 10K 12K 78643K 15 0 rtable 236 6K 7K 78643K 438 0 ifaddr 73 24K 24K 78643K 87 0 counters 60 35K 35K 78643K 64 0 ioctlops 0 0K 2K 78643K 34 0 iov 0 0K 16K 78643K 395 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1271 79K 80K 78643K 2153 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 31 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 545 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 23 85K 125K 78643K 1903 0 sigio 0 0K 0K 78643K 23 0 proc 56 78K 103K 78643K 633 0 subproc 104 6K 6K 78643K 130 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 425 0 in_multi 99 6K 6K 78643K 169 0 ether_multi 1 0K 0K 78643K 18 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 193 864K 864K 78643K 193 0 exec 0 0K 1K 78643K 686 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 352 84K 98K 78643K 15260 0 UVM aobj 131 4K 4K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 100 0 NDP 11 0K 2K 78643K 33 0 temp 124 5778K 5842K 78643K 8095 0 kqueue 12 18K 26K 78643K 153 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 120 151 0 148 3 2 1 3 0 8 0 rtentry 112 134 0 23 4 0 4 4 0 8 0 unpcb 144 1385 0 1366 20 17 3 6 0 8 2 syncache 296 16 0 16 4 3 1 1 0 8 1 tcpqe 32 60 0 60 4 3 1 1 0 8 1 tcpcb 776 842 0 835 17 9 8 8 0 8 7 arp 120 23 0 4 1 0 1 1 0 8 0 ipq 40 9 0 7 1 0 1 1 0 8 0 ipqe 40 150 0 148 1 0 1 1 0 8 0 inpcb 368 2287 0 2275 32 24 8 13 0 8 6 nd6 48 30 0 6 1 0 1 1 0 8 0 kcovpl 48 10 0 2 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 540 0 88 29 0 29 29 0 8 0 art_table 32 541 0 88 4 0 4 4 0 8 0 art_node 16 133 0 32 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 0 1 0 1 1 0 8 0 semapl 112 543 0 533 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 4549 0 3119 90 0 90 90 0 8 0 ffsino 272 4549 0 3119 96 0 96 96 0 8 0 nchpl 144 7373 0 5741 63 0 63 63 0 8 0 uvmvnodes 80 4688 0 0 96 0 96 96 0 8 0 vnodes 216 4688 0 0 261 0 261 261 0 8 0 namei 1024 27871 0 27871 2 1 1 2 0 8 1 percpumem 16 45 0 2 1 0 1 1 0 8 0 kstatmem 264 26 0 4 2 0 2 2 0 8 0 scxspl 216 19535 0 19535 14 13 1 8 0 8 1 plimitpl 152 495 0 472 5 3 2 2 0 8 1 sigapl 424 2189 0 2137 7 0 7 7 0 8 0 futexpl 64 17976 0 17970 1 0 1 1 0 8 0 knotepl 120 216 0 0 6 0 6 6 0 8 0 kqueuepl 216 662 0 654 13 12 1 5 0 8 0 pipepl 320 622 0 594 18 15 3 13 0 8 0 fdescpl 496 2171 0 2137 7 1 6 6 0 8 0 filepl 152 18925 0 18680 43 28 15 23 0 8 4 lockfpl 104 94 0 92 1 0 1 1 0 8 0 lockfspl 48 45 0 43 1 0 1 1 0 8 0 sessionpl 144 25 0 9 1 0 1 1 0 8 0 pgrppl 48 203 0 187 1 0 1 1 0 8 0 ucredpl 104 5037 0 5019 1 0 1 1 0 8 0 zombiepl 144 2138 0 2137 1 0 1 1 0 8 0 processpl 1072 2189 0 2137 5 1 4 5 0 8 0 procpl 696 5845 0 5766 12 3 9 9 0 8 1 sosppl 168 56 0 55 2 1 1 1 0 8 0 sockpl 488 3860 0 3826 96 83 13 36 0 8 7 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 0 8 0 mcl12k 12288 16 0 0 2 0 2 2 0 8 0 mcl9k 9216 11 0 0 1 0 1 1 0 8 0 mcl8k 8192 25 0 0 4 1 3 3 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 434 0 0 53 0 53 53 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 1047 0 0 63 0 63 63 0 8 0 bufpl 288 6447 0 159 450 0 450 450 0 8 0 anonpl 24 504759 0 490557 137 24 113 113 0 186 16 amapchunkpl 152 45810 0 45008 58 20 38 45 0 158 6 amappl16 200 7564 0 7188 51 23 28 33 0 8 8 amappl15 192 31 0 29 1 0 1 1 0 8 0 amappl14 184 152 0 141 2 1 1 2 0 8 0 amappl13 176 5 0 5 2 1 1 1 0 8 1 amappl12 168 430 0 424 1 0 1 1 0 8 0 amappl11 160 48 0 38 1 0 1 1 0 8 0 amappl10 152 41 0 32 1 0 1 1 0 8 0 amappl9 144 979 0 978 2 1 1 1 0 8 0 amappl8 136 245 0 181 3 0 3 3 0 8 0 amappl7 128 158 0 134 2 0 2 2 0 8 0 amappl6 120 205 0 188 2 1 1 2 0 8 0 amappl5 112 157 0 151 1 0 1 1 0 8 0 amappl4 104 547 0 520 3 2 1 3 0 8 0 amappl3 96 6119 0 6049 2 0 2 2 0 8 0 amappl2 88 2600 0 2519 3 1 2 3 0 8 0 amappl1 80 52157 0 51367 26 8 18 26 0 8 0 amappl 88 14636 0 14414 7 1 6 6 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 72 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 2171 0 2137 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2171 0 2137 1 0 1 1 0 8 0 vmmpekpl 168 23388 0 23336 3 0 3 3 0 8 0 vmmpepl 168 209986 0 207141 160 15 145 145 0 357 14 vmsppl 440 2170 0 2137 5 0 5 5 0 8 0 rwobjpl 56 64268 0 57891 95 4 91 91 0 8 0 pdppl 4096 4349 0 4274 151 70 81 95 0 8 6 pvpl 32 998994 0 978711 336 88 248 335 0 265 77 pmappl 248 2170 0 2137 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 986 0 98 26 0 26 26 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82804882) at panic+0x177 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806cdc36f8,20000000,20011000) at uvm_fault_unwire_locked+0x321 sys/uvm/uvm_fault.c:1651 uvm_fault_unwire(fffffd806cdc36f8,20000000,20011000) at uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1611 sys_sysctl(ffff8000212d2598,ffff800024719bd8,ffff800024719c20) at sys_sysctl+0x229 sys/kern/kern_sysctl.c:255 syscall(ffff800024719ca0) at syscall+0x555 mi_syscall sys/sys/syscall_mi.h:113 [inline] syscall(ffff800024719ca0) at syscall+0x555 sys/arch/amd64/amd64/trap.c:626 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x68fde4adc30, count: -7 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020d68ff0) at x86_ipi_db+0x1a 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+0x23 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xb sys/dev/kcov.c:144 syscall(ffff80002ca0b770) at syscall+0x53d mi_syscall sys/sys/syscall_mi.h:112 [inline] syscall(ffff80002ca0b770) at syscall+0x53d sys/arch/amd64/amd64/trap.c:626 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe86d0, count: 9 ddb{1}> trace x86_ipi_db(ffff800020d68ff0) at x86_ipi_db+0x1a 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+0x23 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xb sys/dev/kcov.c:144 syscall(ffff80002ca0b770) at syscall+0x53d mi_syscall sys/sys/syscall_mi.h:112 [inline] syscall(ffff80002ca0b770) at syscall+0x53d sys/arch/amd64/amd64/trap.c:626 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe86d0, count: -6