panic: uvm_fault_unwire_locked: address not in map Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 415207 2835 32767 0x10 0 0 syz-executor1 * 72606 2835 32767 0x10 0x4000000 1K syz-executor1 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:399 panic() at panic+0x16c sys/kern/subr_prf.c:208 uvm_fault_unwire_locked(f6641bc1f73d942a,fffffd807baf72b8,fffffd806bd7e690) at u vm_fault_unwire_locked+0x35c uvm_map_pageable_wire(5638e5cdde9905c1,fffffd807baf72b8,21000000,20ffd000,0,4) a t uvm_map_pageable_wire+0x67f uvm_map_protect(e7b2ee62ba859a84,10,ffff800020b92720,2ee9cdfe8,0) at uvm_map_protect+0x610 sys/uvm/uvm_map.c:3294 syscall(9b9dbc6918173ab4) at syscall+0x5a0 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(9b9dbc6918173ab4) at syscall+0x5a0 sys/arch/amd64/amd64/trap.c:583 Xsyscall(6,0,ffffffffffffffa0,0,3,60f5010) at Xsyscall+0x128 end of kernel end trace frame: 0x2ee9ce070, 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}> show panic uvm_fault_unwire_locked: address not in map ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:399 panic() at panic+0x16c sys/kern/subr_prf.c:208 uvm_fault_unwire_locked(f6641bc1f73d942a,fffffd807baf72b8,fffffd806bd7e690) at uvm_fault_unwire_locked+0x35c uvm_map_pageable_wire(5638e5cdde9905c1,fffffd807baf72b8,21000000,20ffd000,0,4) at uvm_map_pageable_wire+0x67f sys/uvm/uvm_map.c:2288 uvm_map_protect(e7b2ee62ba859a84,10,ffff800020b92720,2ee9cdfe8,0) at uvm_map_protect+0x610 sys/uvm/uvm_map.c:3294 syscall(9b9dbc6918173ab4) at syscall+0x5a0 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(9b9dbc6918173ab4) at syscall+0x5a0 sys/arch/amd64/amd64/trap.c:583 Xsyscall(6,0,ffffffffffffffa0,0,3,60f5010) at Xsyscall+0x128 end of kernel end trace frame: 0x2ee9ce070, count: -7 ddb{1}> show registers rdi 0xffffffff819d4fa7 db_enter+0x17 rsi 0x1702 __ALIGN_SIZE+0x702 rbp 0xffff800020cbd7d0 rbx 0xffff800020cbd870 rdx 0x1703 __ALIGN_SIZE+0x703 rcx 0xffff800002749000 rax 0xffff800002749000 r8 0xffffffff81aa9b64 kprintf+0x174 r9 0x1 r10 0x6effb10ea25fb081 r11 0x32034b00d401a3d5 r12 0x3000000008 r13 0xffff800020cbd7e0 r14 0x100 r15 0x1 rip 0xffffffff819d4fa8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020cbd7c0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor1) pid=72606 stat=onproc flags process=10 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020b93080,0xffffffff8230f728 process=0xffff800020b94010 user=0xffff800020cb8000, vmspace=0xfffffd807f00d9d8 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 2835 415207 92290 32767 7 0x10 syz-executor1 * 2835 72606 92290 32767 7 0x4000010 syz-executor1 97633 82054 15189 32767 2 0x10 syz-executor0 97633 317031 15189 32767 3 0x4000090 netio syz-executor0 15189 291856 4159 32767 3 0x90 nanosleep syz-executor0 4159 391417 95089 0 3 0x82 wait syz-executor0 92290 452396 98537 32767 3 0x90 nanosleep syz-executor1 98537 411870 95089 0 3 0x82 wait syz-executor1 14095 322846 0 0 3 0x14200 bored sosplice 95089 70127 70295 0 3 0x82 thrsleep syz-fuzzer 95089 313071 70295 0 3 0x4000082 thrsleep syz-fuzzer 95089 249018 70295 0 3 0x4000082 thrsleep syz-fuzzer 95089 416166 70295 0 3 0x4000082 thrsleep syz-fuzzer 95089 251446 70295 0 3 0x4000082 thrsleep syz-fuzzer 95089 138147 70295 0 3 0x4000082 thrsleep syz-fuzzer 95089 350541 70295 0 3 0x4000082 thrsleep syz-fuzzer 95089 2787 70295 0 3 0x4000082 kqread syz-fuzzer 95089 500648 70295 0 3 0x4000082 thrsleep syz-fuzzer 95089 362312 70295 0 3 0x4000082 thrsleep syz-fuzzer 95089 271601 70295 0 3 0x4000082 thrsleep syz-fuzzer 95089 393292 70295 0 3 0x4000082 thrsleep syz-fuzzer 70295 283345 21644 0 3 0x10008a pause ksh 21644 251469 53425 0 3 0x92 select sshd 42 6283 1 0 3 0x100083 ttyin getty 53425 378765 1 0 3 0x80 select sshd 47975 317390 72644 73 3 0x100090 kqread syslogd 72644 357881 1 0 3 0x100082 netio syslogd 27730 453931 1 77 3 0x100090 poll dhclient 78352 314281 1 0 3 0x80 poll dhclient 82238 44154 0 0 2 0x14200 zerothread 1037 464502 0 0 3 0x14200 aiodoned aiodoned 13468 493626 0 0 3 0x14200 syncer update 43340 58710 0 0 3 0x14200 cleaner cleaner 50015 106650 0 0 3 0x14200 reaper reaper 25834 87482 0 0 3 0x14200 pgdaemon pagedaemon 82595 429753 0 0 3 0x14200 bored crynlk 59014 345205 0 0 3 0x14200 bored crypto 95274 367319 0 0 3 0x40014200 acpi0 acpi0 38925 33084 0 0 3 0x40014200 idle1 62530 167027 0 0 3 0x14200 bored softnet 76154 29900 0 0 3 0x14200 bored systqmp 13101 469362 0 0 3 0x14200 bored systq 18711 231927 0 0 3 0x40014200 bored softclock 51347 357541 0 0 3 0x40014200 idle0 1 478754 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex &uvm.pageqlock r = 0 (0xffffffff82310608) locked @ /syzkaller/managers/setuid/kernel/sys/uvm/uvm_fault.c:1339 Process 2835 (syz-executor1) thread 0xffff800020b92720 (72606) exclusive rwlock vmmaplk r = 0 (0xfffffd807f00d9f0) locked @ /syzkaller/managers/setuid/kernel/sys/uvm/uvm_map.c:2268 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8231e5d8) locked @ /syzkaller/managers/setuid/kernel/sys/uvm/uvm_map.c:2732 exclusive mutex &uvm.pageqlock r = 0 (0xffffffff82310608) locked @ /syzkaller/managers/setuid/kernel/sys/uvm/uvm_fault.c:1339 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9462 6321K 6321K 78643K 12019 0 0 pcb 23 9K 11K 78643K 6835 0 0 rtable 97 3K 3K 78643K 9575 0 0 ifaddr 36 18K 21K 78643K 1819 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 2K 78643K 358 0 0 iov 0 0K 36K 78643K 873 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1201 75K 75K 78643K 10148 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 9K 78643K 139 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 12 0K 0K 78643K 940 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1792 194K 288K 78643K 12592 0 0 file desc 8 25K 33K 78643K 13364 0 0 sigio 0 0K 0K 78643K 217 0 0 proc 41 38K 70K 78643K 7923 0 0 subproc 68 69634K 69634K 78643K 10064 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 ip_moptions 0 0K 0K 78643K 1959 0 0 in_multi 33 2K 2K 78643K 3725 0 0 ether_multi 1 0K 0K 78643K 100 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 72 318K 318K 78643K 72 0 0 exec 0 0K 1K 78643K 2352 0 0 pagedep 1 8K 8K 78643K 1 0 0 inodedep 1 32K 32K 78643K 1 0 0 newblk 1 0K 0K 78643K 1 0 0 VM swap 7 26K 26K 78643K 7 0 0 UVM amap 108 22K 62K 78643K 41409 0 0 UVM aobj 130 6K 6K 78643K 140 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 0K 78643K 340 0 0 NDP 7 0K 0K 78643K 891 0 0 temp 121 2362K 2437K 78643K 50796 0 0 kqueue 0 0K 0K 78643K 157 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 298 0 294 1 0 1 1 0 8 0 inpcbpl 280 5707 0 5699 1 0 1 1 0 8 0 plimitpl 152 698 0 689 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtentry 112 2687 0 2647 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpcb 544 2279 0 2275 1 0 1 1 0 8 0 nd6 48 592 0 588 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 12507 0 12313 15 2 13 13 0 8 0 art_table 32 12508 0 12313 2 0 2 2 0 8 0 art_node 16 2686 0 2652 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 0 1 0 1 1 0 8 0 semapl 112 936 0 926 1 0 1 1 0 8 0 shmpl 112 138 0 10 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 18744 0 17129 54 1 53 53 0 8 0 ffsino 272 18744 0 17129 110 2 108 108 0 8 0 nchpl 144 36635 0 35061 59 0 59 59 0 8 0 uvmvnodes 72 5926 0 0 108 0 108 108 0 8 0 vnodes 200 5926 0 0 312 0 312 312 0 8 0 namei 1024 136159 0 136159 6 5 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 94421 0 94421 47 46 1 6 0 8 1 sigapl 432 12649 0 12633 5 3 2 3 0 8 0 futexpl 56 125101 0 125101 4 3 1 1 0 8 1 knotepl 112 7955 0 7928 16 15 1 2 0 8 0 kqueuepl 104 3411 0 3409 1 0 1 1 0 8 0 pipepl 112 10406 0 10387 27 26 1 2 0 8 0 fdescpl 488 12650 0 12633 3 0 3 3 0 8 0 filepl 152 83972 0 83874 34 29 5 7 0 8 1 lockfpl 96 3098 0 3098 13 12 1 1 0 8 1 lockfspl 24 6637 0 6637 10 9 1 1 0 8 1 sessionpl 112 311 0 301 1 0 1 1 0 8 0 pgrppl 48 490 0 480 1 0 1 1 0 8 0 ucredpl 96 30175 0 30166 1 0 1 1 0 8 0 zombiepl 144 12633 0 12633 4 3 1 1 0 8 1 processpl 840 12665 0 12633 4 0 4 4 0 8 0 procpl 600 35333 0 35288 20 16 4 5 0 8 0 srpgc 64 1734 0 1734 44 43 1 1 0 8 1 sosppl 128 261 0 261 44 43 1 1 0 8 1 sockpl 384 12838 0 12820 21 18 3 4 0 8 1 mcl64k 65536 27 0 0 3 0 3 3 0 8 0 mcl16k 16384 11 0 0 2 0 2 2 0 8 0 mcl12k 12288 29 0 0 2 0 2 2 0 8 0 mcl9k 9216 57 0 0 3 1 2 2 0 8 0 mcl8k 8192 18 0 0 3 1 2 3 0 8 0 mcl4k 4096 33 0 0 5 2 3 3 0 8 0 mcl2k2 2112 10 0 0 1 0 1 1 0 8 0 mcl2k 2048 126 0 0 14 0 14 14 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 744 0 0 12 2 10 12 0 8 0 bufpl 256 22818 0 15849 436 0 436 436 0 8 0 anonpl 16 1310537 0 1304327 289 247 42 42 0 125 7 amapchunkpl 152 98371 0 98282 581 572 9 189 0 158 4 amappl16 192 66391 0 66124 374 350 24 27 0 8 8 amappl15 184 2623 0 2623 28 28 0 1 0 8 0 amappl14 176 1351 0 1343 2 1 1 1 0 8 0 amappl13 168 1904 0 1901 1 0 1 1 0 8 0 amappl12 160 1050 0 1042 1 0 1 1 0 8 0 amappl11 152 3567 0 3554 1 0 1 1 0 8 0 amappl10 144 1464 0 1455 2 1 1 1 0 8 0 amappl9 136 2530 0 2523 1 0 1 1 0 8 0 amappl8 128 3590 0 3512 3 0 3 3 0 8 0 amappl7 120 1881 0 1870 1 0 1 1 0 8 0 amappl6 112 1319 0 1294 1 0 1 1 0 8 0 amappl5 104 2110 0 2099 1 0 1 1 0 8 0 amappl4 96 2346 0 2310 2 1 1 2 0 8 0 amappl3 88 1490 0 1485 1 0 1 1 0 8 0 amappl2 80 111133 0 111056 2 0 2 2 0 8 0 amappl1 72 319711 0 319256 23 13 10 18 0 8 0 amappl 72 37716 0 37679 1 0 1 1 0 75 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma64 64 259 0 259 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 17 0 17 1 1 0 1 0 8 0 aobjpl 64 139 0 10 3 0 3 3 0 8 0 uaddrrnd 24 12650 0 12633 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 12650 0 12633 1 0 1 1 0 8 0 vmmpekpl 168 105964 0 105941 2 0 2 2 0 8 0 vmmpepl 168 1445698 0 1444184 310 237 73 78 0 357 1 vmsppl 360 12649 0 12633 2 0 2 2 0 8 0 pdppl 4096 25307 0 25266 8 2 6 6 0 8 0 pvpl 32 3597309 0 3587827 670 561 109 116 0 265 24 pmappl 224 12649 0 12633 53 51 2 2 0 8 1 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 621 0 18 18 0 18 18 0 8 0