uvm_fault(0xfffffd806ba518b0, 0xf, 0, 1) -> e kernel: page fault trap, code=0 Stopped at ktrops+0x58: movq 0x10(%r14),%r14 TID PID UID PRFLAGS PFLAGS CPU COMMAND *167580 36486 0 0 0x4000000 0 syz-executor ktrops(ffff80002a7f87e8,ffffffffffffffff,0,a0c7df9f,fffffd8072c53cf0,fffffd8007bfb4e0) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7f87e8,ffffffffffffffff,0,a0c7df9f,fffffd8072c53cf0,fffffd8007bfb4e0) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd8072c53cf0,4,20c7df9f,0,ffff80002a7f87e8) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd8072c53cf0,4,20c7df9f,0,ffff80002a7f87e8) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7f87e8,ffff80003c99ba90,ffff80003c99b9e0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c99ba90) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c99ba90) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d3c180f410, count: 10 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> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic *cpu0: uvm_fault(0xfffffd806ba518b0, 0xf, 0, 1) -> e ddb> trace ktrops(ffff80002a7f87e8,ffffffffffffffff,0,a0c7df9f,fffffd8072c53cf0,fffffd8007bfb4e0) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7f87e8,ffffffffffffffff,0,a0c7df9f,fffffd8072c53cf0,fffffd8007bfb4e0) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd8072c53cf0,4,20c7df9f,0,ffff80002a7f87e8) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd8072c53cf0,4,20c7df9f,0,ffff80002a7f87e8) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7f87e8,ffff80003c99ba90,ffff80003c99b9e0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c99ba90) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c99ba90) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d3c180f410, count: -5 ddb> show registers rdi 0xffff80002a7f87e8 rsi 0xffffffffffffffff rbp 0xffff80003c99b7b0 rbx 0xfffffd8007bfb4e0 rdx 0 rcx 0xa0c7df9f rax 0xffff80002a7f87e8 r8 0xfffffd8072c53cf0 r9 0xfffffd8007bfb4e0 r10 0x55fb6f2b08e7ab1d r11 0xe3722d5e18fdbfa6 r12 0xffff80002a7f87e8 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0xa0c7df9f rip 0xffffffff82711998 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c99b730 ss 0x10 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=167580 pid=36486 tcnt=4 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a7f9ca8,0xffffffff838a5028 process=0xffff80003c9876f0 user=0xffff80003c996000, vmspace=0xfffffd806ba518b0 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 36486 473210 67946 0 2 0 syz-executor 36486 408533 67946 0 3 0x4000080 fsleep syz-executor 36486 113567 67946 0 3 0x4000080 fsleep syz-executor *36486 167580 67946 0 7 0x4000000 syz-executor 26938 375057 54194 0 2 0 syz-executor 26938 301735 54194 0 2 0x4000000 syz-executor 49299 417233 34485 0 2 0 syz-executor 49299 497721 34485 0 3 0x4000080 fsleep syz-executor 49299 57535 34485 0 3 0x4000080 fsleep syz-executor 49299 316531 34485 0 3 0x4000080 fsleep syz-executor 13760 291552 6726 0 2 0 syz-executor 13760 117631 6726 0 3 0x4000080 kqread syz-executor 13760 305945 6726 0 2 0x4000000 syz-executor 39774 242932 47046 0 2 0xc80 syz-executor 39774 94201 47046 0 3 0x4000080 kqsel syz-executor 39774 292791 47046 0 3 0x4000080 fsleep syz-executor 88684 435177 26112 0 2 0xc80 syz-executor 88684 25824 26112 0 3 0x4000080 kqpoll syz-executor 88684 364097 26112 0 3 0x4000080 fsleep syz-executor 88684 249708 26112 0 3 0x4000080 fsleep syz-executor 34485 420987 8266 0 3 0x82 nanoslp syz-executor 67946 357292 8266 0 2 0xc82 syz-executor 47046 206445 8266 0 3 0x82 nanoslp syz-executor 50250 139622 8266 0 3 0x82 nanoslp syz-executor 85827 139446 8266 0 2 0xc82 syz-executor 54194 50731 8266 0 3 0x82 nanoslp syz-executor 6726 486642 8266 0 3 0x82 nanoslp syz-executor 26112 434291 8266 0 3 0x82 nanoslp syz-executor 8266 241852 27448 0 3 0x82 kqread syz-executor 27448 432397 35481 0 3 0x10008a sigsusp ksh 35481 402821 29477 0 3 0x98 kqread sshd-session 29477 11929 69515 0 3 0x92 kqread sshd-session 86745 355292 1 0 3 0x100083 ttyin getty 69515 232801 1 0 3 0x88 kqread sshd 71405 112266 78111 73 3 0x1100090 kqread syslogd 78111 291041 1 0 3 0x100082 sbwait syslogd 26823 163564 1 0 3 0x100080 kqread resolvd 10594 5222 8145 77 3 0x100092 kqread dhcpleased 6942 170815 8145 77 3 0x100092 kqread dhcpleased 8145 66311 1 0 3 0x80 kqread dhcpleased 86091 385324 0 0 3 0x14200 bored smr 58727 304881 0 0 2 0x14200 zerothread 42983 361666 0 0 3 0x14200 aiodoned aiodoned 43352 261144 0 0 3 0x14200 syncer update 89567 417394 0 0 3 0x14200 cleaner cleaner 60952 384146 0 0 3 0x14200 reaper reaper 241 326846 0 0 3 0x14200 pgdaemon pagedaemon 92763 146900 0 0 3 0x14200 bored viomb 16901 297910 0 0 3 0x40014200 acpi0 acpi0 1735 43568 0 0 3 0x14200 bored softnet7 20733 22462 0 0 3 0x14200 bored softnet6 45339 193188 0 0 3 0x14200 bored softnet5 27348 523287 0 0 3 0x14200 bored softnet4 59675 432963 0 0 3 0x14200 bored softnet3 74562 397285 0 0 3 0x14200 bored softnet2 72545 485971 0 0 3 0x14200 bored softnet1 13370 179961 0 0 2 0x14200 softnet0 47568 55016 0 0 3 0x14200 bored systqmp 19597 321956 0 0 3 0x14200 bored systq 1150 469154 0 0 3 0x40014200 tmoslp softclock 75707 161827 0 0 3 0x40014200 idle0 1 43007 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10181 11051K 11252K 166960K 11321 0 pcb 20 12K 12K 166960K 43 0 rtable 222 7K 7K 166960K 299 0 pf 30 12K 13K 166960K 40 0 ifaddr 42 7K 7K 166960K 49 0 ifgroup 50 2K 2K 166960K 62 0 sysctl 3 1K 9K 166960K 9 0 counters 32 17K 18K 166960K 39 0 ioctlops 0 0K 4K 166960K 49 0 iov 0 0K 12K 166960K 5 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1338 84K 84K 166960K 1402 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 3 0 VM map 2 1K 1K 166960K 2 0 sem 9 0K 0K 166960K 11 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 93K 166960K 226 0 sigio 0 0K 0K 166960K 3 0 proc 60 59K 83K 166960K 485 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 2 0K 0K 166960K 21 0 in_multi 99 7K 7K 166960K 107 0 ether_multi 1 0K 0K 166960K 4 0 mrt 0 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 73 334K 334K 166960K 73 0 exec 0 0K 1K 166960K 358 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 234 143K 152K 166960K 3518 0 UVM aobj 6 2K 2K 166960K 6 0 pinsyscall 39 78K 94K 166960K 1268 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 14 0 NDP 11 0K 2K 166960K 30 0 temp 39 8634K 8698K 166960K 4097 0 kqueue 15 24K 28K 166960K 42 0 SYN cache 2 16K 16K 166960K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 43 0 40 1 0 1 1 0 8 0 rtentry 136 101 0 6 4 0 4 4 0 8 0 unpcb 144 233 0 215 6 0 6 6 0 8 5 syncache 336 5 0 5 1 0 1 1 0 8 1 tcpqe 32 2 0 2 1 0 1 1 0 8 1 tcpcb 736 37 0 31 1 0 1 1 0 8 0 arp 88 11 0 1 1 0 1 1 0 8 0 inpcb 328 136 0 122 2 0 2 2 0 8 0 ip6q 72 1 0 0 1 0 1 1 0 8 0 ip6af 40 1 0 0 1 0 1 1 0 8 0 nd6 104 16 0 0 1 0 1 1 0 8 0 pkpcb 40 3 0 3 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 5 0 5 1 0 1 1 0 8 1 pppxif 1384 2 0 2 1 0 1 1 0 8 1 pfrule 1344 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 452 0 15 29 0 29 29 0 8 1 art_table 40 453 0 15 5 0 5 5 0 8 0 art_node 32 101 0 16 1 0 1 1 0 8 0 semupl 112 3 0 3 1 0 1 1 0 8 1 semapl 112 9 0 2 1 0 1 1 0 8 0 shmpl 112 3 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1710 0 210 95 0 95 95 0 8 0 ffsino 256 1710 0 210 95 0 95 95 0 8 0 nchpl 144 2028 0 347 63 0 63 63 0 8 0 rtmask 32 1 0 1 1 0 1 1 0 8 1 uvmvnodes 80 1817 0 0 38 0 38 38 0 8 0 vnodes 216 1817 0 0 101 0 101 101 0 8 0 namei 1024 6255 0 6255 2 0 2 2 0 8 2 kstatmem 264 28 0 6 2 0 2 2 0 8 0 scxspl 216 7111 0 7111 8 0 8 8 1 8 8 plimitpl 152 72 0 56 1 0 1 1 0 8 0 sigapl 424 513 0 463 7 0 7 7 0 8 1 knotepl 120 5936 0 5888 6 0 6 6 0 8 4 kqueuepl 184 55 0 42 1 0 1 1 0 8 0 pipepl 304 138 0 110 5 0 5 5 0 8 2 fdescpl 448 492 0 462 5 0 5 5 0 8 1 filepl 120 2029 0 1804 11 0 11 11 0 8 3 lockfpl 104 30 0 27 1 0 1 1 0 8 0 lockfspl 48 14 0 11 1 0 1 1 0 8 0 sessionpl 144 23 0 15 1 0 1 1 0 8 0 pgrppl 48 33 0 17 1 0 1 1 0 8 0 ucredpl 104 170 0 158 1 0 1 1 0 8 0 zombiepl 144 465 0 463 1 0 1 1 0 8 0 processpl 1168 513 0 463 5 0 5 5 0 8 1 procpl 664 653 0 589 6 0 6 6 0 8 0 sockpl 552 417 0 382 12 0 12 12 0 8 9 mcl64k 65536 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2527 0 2472 14 0 14 14 0 8 7 mcl2k 2048 290 0 287 4 0 4 4 0 8 3 mtagpl 96 5 0 4 1 0 1 1 0 8 0 mbufpl 256 5034 0 4881 14 0 14 14 0 8 0 bufpl 280 3118 0 125 214 0 214 214 0 8 0 anonpl 24 101470 0 98245 44 0 44 44 0 187 22 amapchunkpl 152 10256 0 9741 21 0 21 21 0 158 0 amappl16 200 1877 0 1850 15 5 10 15 0 8 8 amappl15 192 6 0 6 1 0 1 1 0 8 1 amappl14 184 109 0 99 1 0 1 1 0 8 0 amappl13 176 7 0 7 1 0 1 1 0 8 1 amappl12 168 1109 0 1078 3 0 3 3 0 8 0 amappl11 160 41 0 31 1 0 1 1 0 8 0 amappl10 152 4 0 4 1 0 1 1 0 8 1 amappl9 144 252 0 252 1 0 1 1 0 8 1 amappl8 136 19 0 18 1 0 1 1 0 8 0 amappl7 128 100 0 90 1 0 1 1 0 8 0 amappl6 120 172 0 169 1 0 1 1 0 8 0 amappl5 112 108 0 102 1 0 1 1 0 8 0 amappl4 104 272 0 258 1 0 1 1 0 8 0 amappl3 96 1755 0 1640 3 0 3 3 0 8 0 amappl2 88 627 0 570 2 0 2 2 0 8 0 amappl1 80 8698 0 8150 13 0 13 13 0 8 0 amappl 88 2856 0 2684 4 0 4 4 0 92 0 dma4096 4096 1 0 1 1 0 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 8 0 8 1 0 1 1 0 8 1 dma128 128 253 0 253 1 0 1 1 0 8 1 dma64 64 7 0 7 1 0 1 1 0 8 1 dma32 32 7 0 7 1 0 1 1 0 8 1 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 5 0 0 1 0 1 1 0 8 0 uaddrrnd 24 492 0 462 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 492 0 462 1 0 1 1 0 8 0 vmmpekpl 168 5665 0 5636 2 0 2 2 0 8 0 vmmpepl 168 37706 0 35820 92 0 92 92 0 357 10 vmsppl 368 491 0 462 4 0 4 4 0 8 1 rwobjpl 40 15006 0 12332 29 0 29 29 0 8 1 pdppl 4096 991 0 924 95 26 69 81 0 8 2 pvpl 32 235896 0 227116 103 0 103 103 0 265 26 pmappl 216 491 0 462 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 373 0 26 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff80002a7f87e8,ffffffffffffffff,0,a0c7df9f,fffffd8072c53cf0,fffffd8007bfb4e0) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7f87e8,ffffffffffffffff,0,a0c7df9f,fffffd8072c53cf0,fffffd8007bfb4e0) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd8072c53cf0,4,20c7df9f,0,ffff80002a7f87e8) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd8072c53cf0,4,20c7df9f,0,ffff80002a7f87e8) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7f87e8,ffff80003c99ba90,ffff80003c99b9e0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c99ba90) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c99ba90) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d3c180f410, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff80002a7f87e8,ffffffffffffffff,0,a0c7df9f,fffffd8072c53cf0,fffffd8007bfb4e0) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7f87e8,ffffffffffffffff,0,a0c7df9f,fffffd8072c53cf0,fffffd8007bfb4e0) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd8072c53cf0,4,20c7df9f,0,ffff80002a7f87e8) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd8072c53cf0,4,20c7df9f,0,ffff80002a7f87e8) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7f87e8,ffff80003c99ba90,ffff80003c99b9e0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c99ba90) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c99ba90) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d3c180f410, count: -5