panic: uvm_fault_unwire_locked: address not in map Starting stack trace... WARNING: SPL NOT LOWERED ON SYSCALL pa7n3i c4(ff874fff2f4 EXffI83T3 e04 8ce Stopped at savectx+174: movl $0,%gs:1672 TID PID UID PRFLAGS PFLAGS CPU COMMAND 299387 60257 0 0 0x4000000 0K syz-executor *294269 60257 0 0 0x4000000 1 syz-executor savectx() at savectx+174 end of kernel end trace frame: 0xcdfe89722d0, count: 14 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}> set $maxwidth = 0 ddb{1}> show panic *cpu0: uvm_fault_unwire_locked: address not in map ddb{1}> trace savectx() at savectx+174 end of kernel end trace frame: 0xcdfe89722d0, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 18446603337232217536 rbx 0 rdx 0 rcx 18446603337232098000 rax 55 r8 18446603337232217328 r9 1 r10 2063199050690819962 r11 17444680101987232733 r12 0 r13 0 r14 18446603337232098000 r15 0 rip 18446744071582114798 savectx+174 cs 8 rflags 70 rsp 18446603337232217408 ss 0 savectx+174: movl $0,%gs:1672 ddb{1}> show proc PROC (syz-executor) tid=294269 pid=60257 tcnt=4 stat=onproc flags process=0 proc=4000000 runpri=84, usrpri=84, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c412038,0xffff80003c413a38 process=0xffff800033fe84f0 user=0xffff80003c42a000, vmspace=0xfffffd806fd43d88 estcpu=34, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 70485 78024 46081 0 2 0 syz-executor 70485 477826 46081 0 3 0x4000080 fsleep syz-executor 49908 119746 17472 0 2 0x2 syz-executor 84397 498841 69458 0 2 0 syz-executor 84397 88320 69458 0 2 0x4000000 syz-executor 84397 466041 69458 0 3 0x4000000 inode syz-executor 84397 113275 69458 0 3 0x4000080 fsleep syz-executor 84397 66175 69458 0 2 0x4000000 syz-executor 80838 295000 89469 0 2 0 syz-executor 80838 266678 89469 0 3 0x4000080 fsleep syz-executor 83443 136815 1720 0 2 0 syz-executor 83443 139565 1720 0 3 0x4000080 fsleep syz-executor 99234 505975 86902 0 2 0 syz-executor 99234 250966 86902 0 3 0x4000080 lockf syz-executor 99234 107147 86902 0 2 0x4000000 syz-executor 60257 313225 3359 0 2 0 syz-executor 60257 299387 3359 0 7 0x4000000 syz-executor 60257 290657 3359 0 3 0x4000080 fsleep syz-executor *60257 294269 3359 0 7 0x4000000 syz-executor 69458 436594 17472 0 2 0xc82 syz-executor 86902 132122 17472 0 2 0xc82 syz-executor 46081 91757 17472 0 2 0xc82 syz-executor 1720 335020 17472 0 2 0xc82 syz-executor 72608 64449 0 0 3 0x14280 nfsidl nfsio 50660 236725 0 0 3 0x14280 nfsidl nfsio 49107 231545 0 0 3 0x14280 nfsidl nfsio 25856 252536 0 0 3 0x14280 nfsidl nfsio 2344 91583 0 0 3 0x14280 nfsidl nfsio 84528 136619 0 0 3 0x14280 nfsidl nfsio 96703 476052 0 0 3 0x14280 nfsidl nfsio 3311 256839 0 0 3 0x14280 nfsidl nfsio 16930 129069 0 0 3 0x14280 nfsidl nfsio 55819 100107 0 0 3 0x14280 nfsidl nfsio 19100 262572 0 0 3 0x14280 nfsidl nfsio 97765 4721 0 0 3 0x14280 nfsidl nfsio 91512 179542 0 0 3 0x14280 nfsidl nfsio 11770 49350 0 0 3 0x14280 nfsidl nfsio 85643 11263 0 0 3 0x14280 nfsidl nfsio 15792 448274 0 0 3 0x14280 nfsidl nfsio 82528 439143 0 0 3 0x14280 nfsidl nfsio 88409 259708 0 0 3 0x14280 nfsidl nfsio 65885 15165 0 0 3 0x14280 nfsidl nfsio 32836 98094 0 0 3 0x14280 nfsidl nfsio 56581 455580 1 0 3 0x100083 ttyopn getty 3359 345349 17472 0 2 0xc82 syz-executor 89469 444709 17472 0 3 0x82 nanoslp syz-executor 46633 103737 17472 0 2 0xc82 syz-executor 17472 462368 98347 0 3 0x82 kqread syz-executor 98347 377824 99054 0 3 0x10008a sigsusp ksh 99054 494753 29795 0 3 0x98 kqread sshd-session 29795 512123 18708 0 3 0x92 kqread sshd-session 18708 86999 1 0 3 0x88 kqread sshd 52599 206827 76341 74 3 0x1100092 bpf pflogd 76341 276403 1 0 3 0x80 sbwait pflogd 51275 5404 90385 73 3 0x1100090 kqread syslogd 90385 309690 1 0 3 0x100082 sbwait syslogd 47742 493791 1 0 3 0x100080 kqread resolvd 18290 210704 20242 77 3 0x100092 kqread dhcpleased 59359 155408 20242 77 3 0x100092 kqread dhcpleased 20242 484000 1 0 3 0x80 kqread dhcpleased 22076 179004 0 0 3 0x14200 bored smr 25967 367780 0 0 2 0x14200 zerothread 3345 331071 0 0 3 0x14200 aiodoned aiodoned 60405 184001 0 0 3 0x14200 syncer update 21845 174942 0 0 3 0x14200 cleaner cleaner 10753 65312 0 0 3 0x14200 reaper reaper 14703 513246 0 0 3 0x14200 pgdaemon pagedaemon 46938 444348 0 0 3 0x14200 bored viomb 56761 244191 0 0 3 0x40014200 acpi0 acpi0 52865 114525 0 0 3 0x40014200 idle1 2994 239595 0 0 3 0x14200 bored softnet1 93640 200471 0 0 3 0x14200 bored softnet0 92170 161450 0 0 3 0x14200 bored systqmp 6576 121804 0 0 3 0x14200 bored systq 77530 438936 0 0 3 0x14200 tmoslp softclockmp 64576 411832 0 0 3 0x40014200 tmoslp softclock 14842 19886 0 0 3 0x40014200 idle0 1 287703 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex &sched_lock r = 0 (0xffffffff839e93e8) #0 witness_lock+1521 #1 mtx_enter+1204 #2 wakeup_n+84 #3 uvm_pmr_freepages+1003 #4 uvm_anfree_list+485 #5 amap_wiperange_chunk+424 #6 amap_wiperange+1204 #7 amap_pp_adjref+1744 #8 amap_adjref_anons+557 #9 uvm_unmap_detach+138 #10 sys_munmap+809 #11 syscall+3028 #12 Xsyscall+296 exclusive mutex &uvm.fpageqlock r = 0 (0xffffffff839b6340) #0 witness_lock+1521 #1 mtx_enter+1204 #2 uvm_pmr_freepages+424 #3 uvm_anfree_list+485 #4 amap_wiperange_chunk+424 #5 amap_wiperange+1204 #6 amap_pp_adjref+1744 #7 amap_adjref_anons+557 #8 uvm_unmap_detach+138 #9 sys_munmap+809 #10 syscall+3028 #11 Xsyscall+296 Process 70485 (syz-executor) thread 0xffff80003c416fb8 (78024) Process 84397 (syz-executor) thread 0xffff80003c417250 (88320) Process 84397 (syz-executor) thread 0xffff80003c413260 (66175) Process 80838 (syz-executor) thread 0xffff80003c413cc0 (295000) Process 60257 (syz-executor) thread 0xffff80003c416d20 (299387) Process 60257 (syz-executor) thread 0xffff80003c4122d0 (294269) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10247 11066K 11311K 166960K 14961 0 pcb 18 20K 36K 166960K 1165 0 rtable 253 17K 17K 166960K 949 0 pf 40 19K 67485K 166960K 359 0 ifaddr 35 7K 8K 166960K 216 0 ifgroup 55 2K 3K 166960K 413 0 sysctl 4 1K 9K 166960K 36 0 counters 68 36K 39K 166960K 452 0 ioctlops 0 0K 8K 166960K 2432 0 iov 0 0K 24K 166960K 267 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1584 100K 100K 166960K 4317 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 13K 166960K 62 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 151 0 dirhash 15 2K 2K 166960K 51 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 106K 166960K 3359 0 sigio 0 0K 0K 166960K 264 0 proc 72 115K 180K 166960K 1048 0 subproc 66 4K 4K 166960K 129 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 583 0 in_multi 67 5K 7K 166960K 276 0 ether_multi 1 0K 0K 166960K 38 0 mrt 2 0K 0K 166960K 34 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 241 1076K 1076K 166960K 241 0 exec 0 0K 1K 166960K 960 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 4 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 256 180K 201K 166960K 33083 0 UVM aobj 97 29K 29K 166960K 117 0 pinsyscall 42 84K 105K 166960K 4656 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 324 0 NDP 12 0K 2K 166960K 167 0 temp 81 8660K 8788K 166960K 161126 0 kqueue 13 20K 30K 166960K 685 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 26 0 0 1 0 1 1 0 8 0 rtpcb 120 348 0 345 3 2 1 3 0 8 0 rtentry 176 254 0 169 5 0 5 5 0 8 0 unpcb 144 2258 0 2241 24 20 4 6 0 8 3 syncache 336 10 0 10 5 5 0 1 0 8 0 tcpqe 32 16 0 16 3 3 0 1 0 8 0 tcpcb 736 1100 0 1094 27 25 2 13 0 8 1 arp 136 40 0 24 1 0 1 1 0 8 0 inpcb 328 4075 0 4064 46 44 2 12 0 8 0 nd6 152 50 0 28 2 0 2 2 0 8 0 pkpcb 40 14 0 14 6 6 0 1 0 8 0 kcovpl 48 14 0 7 1 0 1 1 0 8 0 ppxss 1192 154 0 154 4 3 1 1 0 8 1 pppxif 1504 13 0 13 8 8 0 1 0 8 0 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 26 0 21 1 0 1 1 0 482 0 pffrnode 88 20 0 15 1 0 1 1 0 8 0 pffrent 40 44 0 39 1 0 1 1 0 8 0 pfosfp 40 1431 0 1006 5 0 5 5 0 8 0 pfosfpen 112 1431 0 715 21 0 21 21 0 8 0 pfrktable 1344 6 0 3 1 0 1 1 0 8 0 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfstitem 24 218 0 147 1 0 1 1 0 8 0 pfstkey 128 219 0 149 3 0 3 3 0 8 0 pfstate 384 216 0 148 9 1 8 9 0 8 0 pfrule 1344 27 0 18 2 1 1 2 0 8 0 rttmr 136 4 0 4 4 4 0 1 0 8 0 art_heap8 4096 6 0 0 6 0 6 6 0 8 0 art_heap4 256 1059 0 734 36 15 21 31 0 8 0 art_table 40 1065 0 734 5 0 5 5 0 8 0 art_node 32 251 0 176 1 0 1 1 0 8 0 sysvmsgpl 40 24 0 23 1 0 1 1 0 8 0 semapl 112 149 0 139 1 0 1 1 0 8 0 shmpl 112 100 0 19 3 0 3 3 0 8 0 dirhash 1024 43 0 24 3 0 3 3 0 8 0 dino2pl 256 7635 0 6108 96 0 96 96 0 8 0 ffsino 296 7635 0 6108 118 0 118 118 0 8 0 nchpl 144 12241 0 10518 64 0 64 64 0 8 0 rtmask 32 38 0 38 8 7 1 1 0 8 1 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 42616 0 42615 6 5 1 2 0 8 0 percpumem 16 241 0 192 1 0 1 1 0 8 0 vcpupl 3968 14 0 1 2 0 2 2 0 8 0 vmpool 840 14 0 1 2 0 2 2 0 8 0 pfiaddrpl 120 2 0 0 1 0 1 1 0 8 0 kstatmem 264 282 0 252 6 3 3 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 6 0 6 5 5 0 1 0 8 0 scxspl 216 68993 0 68993 17 14 3 8 1 8 3 plimitpl 152 972 0 954 1 0 1 1 0 8 0 sigapl 424 3677 0 3610 9 1 8 8 0 8 0 knotepl 120 668 0 0 20 0 20 20 0 8 0 kqueuepl 224 1363 0 1354 14 13 1 5 0 8 0 pipepl 344 582 0 554 18 9 9 9 0 8 6 fdescpl 528 3635 0 3604 3 0 3 3 0 8 0 filepl 160 24912 0 24693 52 36 16 17 0 8 4 lockfpl 104 1437 0 1433 2 1 1 2 0 8 0 lockfspl 48 541 0 538 1 0 1 1 0 8 0 sessionpl 144 33 0 24 1 0 1 1 0 8 0 pgrppl 48 296 0 279 1 0 1 1 0 8 0 ucredpl 104 4438 0 4425 1 0 1 1 0 8 0 zombiepl 144 4996 0 4995 2 1 1 1 0 8 0 processpl 1232 3677 0 3610 6 0 6 6 0 8 0 procpl 664 9337 0 9258 8 0 8 8 0 8 0 sosppl 176 24 0 24 8 7 1 1 0 8 1 sockpl 752 6842 0 6811 91 80 11 21 0 8 6 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 8 0 0 1 0 1 1 0 8 0 mcl12k 12288 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 118 0 0 15 0 15 15 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 41 0 0 4 0 4 4 0 8 0 mtagpl 96 5 0 0 1 0 1 1 0 8 0 mbufpl 256 1483 0 0 93 0 93 93 0 8 0 bufpl 280 26183 0 20044 439 0 439 439 0 8 0 anonpl 32 11011 0 0 89 0 89 89 0 246 0 amapchunkpl 152 115918 0 115354 85 55 30 34 0 158 4 amappl16 200 12065 0 12028 63 48 15 26 0 8 5 amappl15 192 8 0 8 1 1 0 1 0 8 0 amappl14 184 4 0 4 1 1 0 1 0 8 0 amappl13 176 499 0 498 1 0 1 1 0 8 0 amappl12 168 4059 0 4017 3 0 3 3 0 8 0 amappl11 160 9 0 9 2 2 0 1 0 8 0 amappl10 152 53 0 38 1 0 1 1 0 8 0 amappl9 144 252 0 250 1 0 1 1 0 8 0 amappl8 136 29 0 26 1 0 1 1 0 8 0 amappl7 128 115 0 113 1 0 1 1 0 8 0 amappl6 120 385 0 371 1 0 1 1 0 8 0 amappl5 112 97 0 86 1 0 1 1 0 8 0 amappl4 104 484 0 453 1 0 1 1 0 8 0 amappl3 96 20299 0 20208 4 1 3 3 0 8 0 amappl2 88 3765 0 3688 2 0 2 2 0 8 0 amappl1 80 23470 0 22882 16 2 14 15 0 8 0 amappl 88 31680 0 31504 6 1 5 5 0 92 0 uvmvnodes 80 207 0 0 5 0 5 5 0 8 0 dma65536 65536 1 0 1 1 1 0 1 0 8 0 dma8192 8192 2 0 2 2 2 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 2 0 2 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 8 0 8 3 3 0 1 0 8 0 dma128 128 255 0 255 2 2 0 1 0 8 0 dma64 64 7 0 7 2 1 1 1 0 8 1 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 72 116 0 20 2 0 2 2 0 8 0 uaddrrnd 24 3635 0 3604 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3635 0 3604 1 0 1 1 0 8 0 vmmpekpl 168 29879 0 29824 4 0 4 4 0 8 0 vmmpepl 168 232129 0 230180 142 44 98 108 0 357 4 vmsppl 488 3634 0 3604 7 2 5 5 0 8 0 rwobjpl 80 60026 0 58774 36 4 32 34 0 8 0 pdppl 4096 7306 0 7223 141 56 85 87 0 8 2 pvpl 32 21454 0 0 173 1 172 172 0 265 0 pmappl 256 3648 0 3605 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 449 0 114 10 0 10 10 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+39: addq $8,%rsp x86_ipi_db(ffffffff837d2ff0) at x86_ipi_db+39 x86_ipi_handler() at x86_ipi_handler+217 Xresume_lapic_ipi() at Xresume_lapic_ipi+39 x86_bus_space_io_read_1(3f8,5) at x86_bus_space_io_read_1+55 comcnputc(800,65) at comcnputc+592 cnputc(65) at cnputc+103 kputchar(65,5,0) at kputchar+749 kprintf() at kprintf+10693 printf(ffffffff833bb823) at printf+139 db_stack_trace_print(ffff80002a33a480,1,100,ffffffff8334af0f,ffffffff83078820) at db_stack_trace_print+1630 db_stack_dump() at db_stack_dump+165 panic(ffffffff833e48e7) at panic+464 uvm_fault_unwire_locked(fffffd806fd43d88,2000003c0000,2000003c1000) at uvm_fault_unwire_locked+1262 uvm_fault_wire(fffffd806fd43d88,2000003c0000,2000003d1000,3) at uvm_fault_wire+301 end trace frame: 0xffff80002a33a6f0, count: 0 ddb{0}> trace x86_ipi_db(ffffffff837d2ff0) at x86_ipi_db+39 x86_ipi_handler() at x86_ipi_handler+217 Xresume_lapic_ipi() at Xresume_lapic_ipi+39 x86_bus_space_io_read_1(3f8,5) at x86_bus_space_io_read_1+55 comcnputc(800,65) at comcnputc+592 cnputc(65) at cnputc+103 kputchar(65,5,0) at kputchar+749 kprintf() at kprintf+10693 printf(ffffffff833bb823) at printf+139 db_stack_trace_print(ffff80002a33a480,1,100,ffffffff8334af0f,ffffffff83078820) at db_stack_trace_print+1630 db_stack_dump() at db_stack_dump+165 panic(ffffffff833e48e7) at panic+464 uvm_fault_unwire_locked(fffffd806fd43d88,2000003c0000,2000003c1000) at uvm_fault_unwire_locked+1262 uvm_fault_wire(fffffd806fd43d88,2000003c0000,2000003d1000,3) at uvm_fault_wire+301 uvm_vslock_device(ffff80003c416d20,2000003c0040,10000,3,ffff80002a33a738) at uvm_vslock_device+274 physio(ffffffff818c90f0,d02,8000,ffffffff818c9940,ffff80002a33aa18) at physio+599 spec_read(ffff80002a33a870) at spec_read+331 VOP_READ(fffffd806d3d1b28,ffff80002a33aa18,0,fffffd80097fb5b0) at VOP_READ+257 vn_read(fffffd80760d02d8,ffff80002a33aa18,1) at vn_read+379 dofilereadv(ffff80003c416d20,4,ffff80002a33aa18,1,ffff80002a33aad0) at dofilereadv+602 sys_pread(ffff80003c416d20,ffff80002a33ab80,ffff80002a33aad0) at sys_pread+174 syscall(ffff80002a33ab80) at syscall+3028 Xsyscall() at Xsyscall+296 end of kernel end trace frame: 0xce05c7a5c90, count: -23 ddb{0}> machine ddbcpu 1 Stopped at savectx+174: movl $0,%gs:1672 savectx() at savectx+174 end of kernel end trace frame: 0xcdfe89722d0, count: 14 ddb{1}> trace savectx() at savectx+174 end of kernel end trace frame: 0xcdfe89722d0, count: -1