login: panic: uvm_fault_unwire_locked: address not in map Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *439193 31994 32767 0x10 0x4000000 0 syz-executor 394061 49035 32767 0x10 0 1 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8340503a) at panic+0x1e5 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806bdf8738,400000000000,400000011000) at uvm_fault_unwire_locked+0x48d sys/uvm/uvm_fault.c:1739 uvm_fault_unwire(fffffd806bdf8738,400000000000,400000011000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1702 kern_sysctl_dirs(4e,ffff80002a8b3e38,1,4000000001c0,ffff80002a8b3e68,0,ead45e3c1d70c877,1) at kern_sysctl_dirs+0x340 sysctl_vsunlock sys/kern/kern_sysctl.c:213 [inline] kern_sysctl_dirs(4e,ffff80002a8b3e38,1,4000000001c0,ffff80002a8b3e68,0,ead45e3c1d70c877,1) at kern_sysctl_dirs+0x340 sys/kern/kern_sysctl.c:430 kern_sysctl(ffff80002a8b3e34,2,4000000001c0,ffff80002a8b3e68,0,37,433d67502b3445b5) at kern_sysctl+0x12d sys/kern/kern_sysctl.c:524 sys_sysctl(ffff80003c1067c0,ffff80002a8b3fa0,ffff80002a8b3ef0) at sys_sysctl+0x425 syscall(ffff80002a8b3fa0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a8b3fa0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5df3e8989d0, count: 6 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+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8340503a) at panic+0x1e5 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806bdf8738,400000000000,400000011000) at uvm_fault_unwire_locked+0x48d sys/uvm/uvm_fault.c:1739 uvm_fault_unwire(fffffd806bdf8738,400000000000,400000011000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1702 kern_sysctl_dirs(4e,ffff80002a8b3e38,1,4000000001c0,ffff80002a8b3e68,0,ead45e3c1d70c877,1) at kern_sysctl_dirs+0x340 sysctl_vsunlock sys/kern/kern_sysctl.c:213 [inline] kern_sysctl_dirs(4e,ffff80002a8b3e38,1,4000000001c0,ffff80002a8b3e68,0,ead45e3c1d70c877,1) at kern_sysctl_dirs+0x340 sys/kern/kern_sysctl.c:430 kern_sysctl(ffff80002a8b3e34,2,4000000001c0,ffff80002a8b3e68,0,37,433d67502b3445b5) at kern_sysctl+0x12d sys/kern/kern_sysctl.c:524 sys_sysctl(ffff80003c1067c0,ffff80002a8b3fa0,ffff80002a8b3ef0) at sys_sysctl+0x425 syscall(ffff80002a8b3fa0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a8b3fa0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5df3e8989d0, count: -9 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a8b3a40 rbx 0xffffffff837bcdc7 cpu_info_full_primary+0x2dc7 rdx 0 rcx 0xffff80003c1067c0 rax 0xffffffff837bbff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xfd457deedcbf717b r11 0xfd600309103c1f08 r12 0xffffffff837bcbc8 cpu_info_full_primary+0x2bc8 r13 0 r14 0 r15 0x1 rip 0xffffffff81685985 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a8b3a30 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=439193 pid=31994 tcnt=4 stat=onproc flags process=10 proc=4000000 runpri=36, usrpri=50, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c107468,0xffff80002a368f58 process=0xffff80003a8fd010 user=0xffff80002a8af000, vmspace=0xfffffd806bdf8738 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 31994 238705 55418 32767 3 0x10 vmmaplk syz-executor *31994 439193 55418 32767 7 0x4000010 syz-executor 31994 312987 55418 32767 3 0x4000090 fsleep syz-executor 31994 18141 55418 32767 2 0x4000010 syz-executor 94233 398516 77736 32767 2 0x10 syz-executor 94233 263801 77736 32767 3 0x4000090 fsleep syz-executor 94233 500401 77736 32767 2 0x4000010 syz-executor 94233 56220 77736 32767 3 0x4000090 fsleep syz-executor 59226 498827 85442 0 2 0x2 syz-executor 33223 446128 36450 32767 3 0x3010 suspend syz-executor 33223 179757 36450 32767 2 0x4081010 syz-executor 33223 143706 36450 32767 2 0x4081010 syz-executor 23243 517975 18611 32767 2 0x10 syz-executor 30531 238469 85442 0 2 0x2 syz-executor 62314 155559 0 0 3 0x14200 bored sosplice 63457 210026 16173 0 3 0x100082 sbwait arp 16173 485312 650 0 3 0x10008a sigsusp sh 55418 29197 56967 32767 3 0x90 nanoslp syz-executor 18611 155051 1550 32767 2 0x10 syz-executor 49035 394061 19021 32767 7 0x10 syz-executor 77736 248579 31503 32767 3 0x90 nanoslp syz-executor 36450 127533 34734 32767 3 0x90 nanoslp syz-executor 650 242157 25573 0 3 0x80 wait syz-executor 19021 343000 85442 0 3 0x82 wait syz-executor 56967 344433 85442 0 3 0x82 wait syz-executor 1550 220471 85442 0 3 0x82 wait syz-executor 34734 404842 85442 0 3 0x82 wait syz-executor 31503 70053 85442 0 3 0x82 wait syz-executor 25573 489954 85442 0 3 0x82 wait syz-executor 85442 404123 18580 0 3 0x82 kqread syz-executor 18580 212250 47022 0 3 0x10008a sigsusp ksh 47022 136871 45559 0 3 0x98 kqread sshd-session 45559 98627 30848 0 3 0x92 kqread sshd-session 28857 445652 1 0 3 0x100083 ttyin getty 30848 187476 1 0 3 0x88 kqread sshd 46861 117577 28352 73 3 0x1100090 kqread syslogd 28352 207133 1 0 3 0x100082 sbwait syslogd 99136 244186 1 0 3 0x100080 kqread resolvd 89679 332322 64524 77 3 0x100092 kqread dhcpleased 91735 281652 64524 77 3 0x100092 kqread dhcpleased 64524 503307 1 0 3 0x80 kqread dhcpleased 42387 406410 0 0 3 0x14200 bored smr 40147 503484 0 0 2 0x14200 zerothread 42391 456767 0 0 3 0x14200 aiodoned aiodoned 69389 192944 0 0 3 0x14200 syncer update 37990 182926 0 0 3 0x14200 cleaner cleaner 77396 113784 0 0 3 0x14200 reaper reaper 32676 257031 0 0 3 0x14200 pgdaemon pagedaemon 83667 512212 0 0 3 0x14200 bored viomb 15967 139296 0 0 3 0x40014200 acpi0 acpi0 40304 271677 0 0 3 0x40014200 idle1 71127 276428 0 0 3 0x14200 bored softnet3 30063 316835 0 0 3 0x14200 bored softnet2 21111 439255 0 0 3 0x14200 bored softnet1 39780 194245 0 0 3 0x14200 bored softnet0 38540 137604 0 0 3 0x14200 bored systqmp 80839 385878 0 0 3 0x14200 bored systq 62294 39830 0 0 3 0x14200 tmoslp softclockmp 58295 297779 0 0 3 0x40014200 tmoslp softclock 25918 393672 0 0 3 0x40014200 idle0 1 6022 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 31994 (syz-executor) thread 0xffff80003c1067c0 (439193) shared rwlock vmmaplk r = 0 (0xfffffd806bdf8838) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_read+0x3af sys/kern/kern_rwlock.c:405 #2 uvm_fault_unwire+0x3e sys/uvm/uvm_fault.c:1701 #3 kern_sysctl_dirs+0x340 sysctl_vsunlock sys/kern/kern_sysctl.c:213 [inline] #3 kern_sysctl_dirs+0x340 sys/kern/kern_sysctl.c:430 #4 kern_sysctl+0x12d sys/kern/kern_sysctl.c:524 #5 sys_sysctl+0x425 #6 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8390d720) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 __mp_acquire_count+0x58 #2 mi_switch+0x4b7 sys/kern/sched_bsd.c:441 #3 sleep_finish+0x24f sys/kern/kern_synch.c:414 #4 rw_do_enter_read+0x2de sys/kern/kern_rwlock.c:385 #5 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1864 #6 uvm_fault_check+0x4b sys/uvm/uvm_fault.c:732 #7 uvm_fault+0x106 sys/uvm/uvm_fault.c:668 #8 uvm_fault_wire+0x73 sys/uvm/uvm_fault.c:1681 #9 sysctl_vslock+0x109 sys/kern/kern_sysctl.c:195 #10 kern_sysctl_dirs+0x247 sys/kern/kern_sysctl.c:426 #11 kern_sysctl+0x12d sys/kern/kern_sysctl.c:524 #12 sys_sysctl+0x425 #13 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 exclusive rwlock sysctllk r = 0 (0xffffffff837975d8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 sysctl_vslock+0x45 sys/kern/kern_sysctl.c:185 #3 kern_sysctl_dirs+0x247 sys/kern/kern_sysctl.c:426 #4 kern_sysctl+0x12d sys/kern/kern_sysctl.c:524 #5 sys_sysctl+0x425 #6 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10188 10950K 10966K 166960K 11273 0 pcb 17 12K 12K 166960K 17 0 rtable 176 5K 6K 166960K 342 0 pf 27 16K 16K 166960K 31 0 ifaddr 32 5K 7K 166960K 42 0 ifgroup 42 1K 2K 166960K 50 0 sysctl 1 1K 2K 166960K 2 0 counters 60 35K 36K 166960K 64 0 ioctlops 0 0K 2K 166960K 30 0 iov 0 0K 32K 166960K 79 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1333 84K 84K 166960K 1533 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 4 0 VM map 2 1K 1K 166960K 2 0 sem 9 0K 0K 166960K 9 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 23 79K 129K 166960K 327 0 sigio 0 0K 0K 166960K 3 0 proc 58 79K 115K 166960K 489 0 subproc 54 3K 4K 166960K 162 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 36 0 in_multi 67 5K 6K 166960K 99 0 ether_multi 1 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 109 493K 493K 166960K 109 0 exec 0 0K 1K 166960K 376 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 214 60K 82K 166960K 4173 0 UVM aobj 7 2K 4K 166960K 8 0 pinsyscall 45 90K 119K 166960K 1362 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 6 0 NDP 9 0K 1K 166960K 25 0 temp 67 8643K 8708K 166960K 4606 0 kqueue 13 20K 26K 166960K 51 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 51 0 47 1 0 1 1 0 8 0 rtentry 112 104 0 23 3 0 3 3 0 8 0 unpcb 144 587 0 521 12 4 8 12 0 8 5 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 808 61 0 56 2 0 2 2 0 8 1 arp 120 17 0 4 1 0 1 1 0 8 0 ipq 40 2 0 1 1 0 1 1 0 8 0 ipqe 40 46 0 45 1 0 1 1 0 8 0 inpcb 376 205 0 197 3 0 3 3 0 8 2 nd6 136 22 0 6 1 0 1 1 0 8 0 kcovpl 48 18 0 12 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 413 0 88 26 0 26 26 0 8 3 art_table 32 414 0 88 4 0 4 4 0 8 0 art_node 16 103 0 29 1 0 1 1 0 8 0 sysvmsgpl 40 65 0 65 1 1 0 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 7 0 0 1 0 1 1 0 8 0 shmpl 112 5 0 1 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1844 0 329 95 0 95 95 0 8 0 ffsino 280 1844 0 329 109 0 109 109 0 8 0 nchpl 144 2237 0 552 63 0 63 63 0 8 0 uvmvnodes 80 2015 0 0 42 0 42 42 0 8 0 vnodes 216 2015 0 0 112 0 112 112 0 8 0 namei 1024 6781 0 6781 2 1 1 2 0 8 1 percpumem 16 46 0 2 1 0 1 1 0 8 0 kstatmem 264 22 0 4 2 0 2 2 0 8 0 scxspl 216 6871 0 6871 3 2 1 2 1 8 1 plimitpl 152 81 0 59 2 0 2 2 0 8 1 sigapl 424 592 0 538 8 0 8 8 0 8 0 futexpl 64 2001 0 1998 1 0 1 1 0 8 0 knotepl 120 571 0 0 18 0 18 18 0 8 0 kqueuepl 216 63 0 54 1 0 1 1 0 8 0 pipepl 328 161 0 134 3 0 3 3 0 8 0 fdescpl 504 573 0 538 6 0 6 6 0 8 0 filepl 152 3000 0 2649 20 5 15 20 0 8 1 lockfpl 104 47 0 43 1 0 1 1 0 8 0 lockfspl 48 23 0 20 1 0 1 1 0 8 0 sessionpl 144 32 0 18 1 0 1 1 0 8 0 pgrppl 48 55 0 33 1 0 1 1 0 8 0 ucredpl 104 558 0 542 1 0 1 1 0 8 0 zombiepl 144 540 0 538 1 0 1 1 0 8 0 processpl 1168 592 0 538 5 0 5 5 0 8 0 procpl 648 846 0 784 7 0 7 7 0 8 1 sosppl 168 2 0 2 1 0 1 1 0 8 1 sockpl 688 845 0 767 29 18 11 29 0 8 3 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 130 0 0 17 0 17 17 0 8 0 mcl2k 2048 35 0 0 5 0 5 5 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 276 0 0 18 0 18 18 0 8 0 bufpl 280 2481 0 123 169 0 169 169 0 8 0 anonpl 24 107167 0 104066 46 0 46 46 0 184 20 amapchunkpl 152 13059 0 12602 25 0 25 25 0 158 4 amappl16 200 1685 0 1669 15 5 10 14 0 8 7 amappl15 192 2 0 2 1 1 0 1 0 8 0 amappl14 184 102 0 91 1 0 1 1 0 8 0 amappl13 176 33 0 33 1 1 0 1 0 8 0 amappl12 168 1182 0 1149 3 1 2 2 0 8 0 amappl11 160 76 0 66 1 0 1 1 0 8 0 amappl10 152 5 0 5 1 1 0 1 0 8 0 amappl9 144 277 0 276 1 0 1 1 0 8 0 amappl8 136 19 0 17 1 0 1 1 0 8 0 amappl7 128 96 0 85 1 0 1 1 0 8 0 amappl6 120 171 0 166 1 0 1 1 0 8 0 amappl5 112 109 0 103 1 0 1 1 0 8 0 amappl4 104 297 0 283 1 0 1 1 0 8 0 amappl3 96 2305 0 2199 5 1 4 4 0 8 0 amappl2 88 636 0 579 2 0 2 2 0 8 0 amappl1 80 8308 0 7744 14 0 14 14 0 8 0 amappl 88 3798 0 3634 5 0 5 5 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 7 0 1 1 0 1 1 0 8 0 uaddrrnd 24 573 0 538 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 573 0 538 1 0 1 1 0 8 0 vmmpekpl 168 6382 0 6330 3 0 3 3 0 8 0 vmmpepl 168 40936 0 39076 102 0 102 102 0 357 15 vmsppl 456 572 0 538 6 0 6 6 0 8 0 rwobjpl 64 15799 0 12933 47 0 47 47 0 8 0 pdppl 4096 1154 0 1076 122 38 84 100 0 8 6 pvpl 32 15365 0 0 124 0 124 124 0 265 0 pmappl 248 572 0 538 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 309 0 41 9 0 9 9 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8340503a) at panic+0x1e5 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806bdf8738,400000000000,400000011000) at uvm_fault_unwire_locked+0x48d sys/uvm/uvm_fault.c:1739 uvm_fault_unwire(fffffd806bdf8738,400000000000,400000011000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1702 kern_sysctl_dirs(4e,ffff80002a8b3e38,1,4000000001c0,ffff80002a8b3e68,0,ead45e3c1d70c877,1) at kern_sysctl_dirs+0x340 sysctl_vsunlock sys/kern/kern_sysctl.c:213 [inline] kern_sysctl_dirs(4e,ffff80002a8b3e38,1,4000000001c0,ffff80002a8b3e68,0,ead45e3c1d70c877,1) at kern_sysctl_dirs+0x340 sys/kern/kern_sysctl.c:430 kern_sysctl(ffff80002a8b3e34,2,4000000001c0,ffff80002a8b3e68,0,37,433d67502b3445b5) at kern_sysctl+0x12d sys/kern/kern_sysctl.c:524 sys_sysctl(ffff80003c1067c0,ffff80002a8b3fa0,ffff80002a8b3ef0) at sys_sysctl+0x425 syscall(ffff80002a8b3fa0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a8b3fa0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5df3e8989d0, count: -9 ddb{0}> machine ddbcpu 1