uvm_fault(0xfffffd806c992b90, 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 *248638 7363 0 0 0x4000000 0 syz-executor ktrops(ffff80003c93b4e0,ffffffffffffffff,0,af82c397,fffffd807e56d0d8,fffffd8007bfd820) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c93b4e0,ffffffffffffffff,0,af82c397,fffffd807e56d0d8,fffffd8007bfd820) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd807e56d0d8,4,af82c397,ffffffff,ffff80003c93b4e0) at doktrace+0x560 ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd807e56d0d8,4,af82c397,ffffffff,ffff80003c93b4e0) at doktrace+0x560 sys/kern/kern_ktrace.c:502 sys_ktrace(ffff80003c93b4e0,ffff80003c939230,ffff80003c939180) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c939230) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c939230) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbb538ed8b0, 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(0xfffffd806c992b90, 0xf, 0, 1) -> e ddb> trace ktrops(ffff80003c93b4e0,ffffffffffffffff,0,af82c397,fffffd807e56d0d8,fffffd8007bfd820) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c93b4e0,ffffffffffffffff,0,af82c397,fffffd807e56d0d8,fffffd8007bfd820) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd807e56d0d8,4,af82c397,ffffffff,ffff80003c93b4e0) at doktrace+0x560 ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd807e56d0d8,4,af82c397,ffffffff,ffff80003c93b4e0) at doktrace+0x560 sys/kern/kern_ktrace.c:502 sys_ktrace(ffff80003c93b4e0,ffff80003c939230,ffff80003c939180) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c939230) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c939230) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbb538ed8b0, count: -5 ddb> show registers rdi 0xffff8000314f8000 rsi 0x416a __ALIGN_SIZE+0x316a rbp 0xffff80003c938f50 rbx 0xfffffd8007bfd820 rdx 0xffff8000314f8000 rcx 0x4169 __ALIGN_SIZE+0x3169 rax 0xffffffff8214fe23 ktrops+0x43 r8 0xfffffd807e56d0d8 r9 0xfffffd8007bfd820 r10 0xfb4e2c1b2177a0be r11 0xb293d60f605bccd1 r12 0xffff80003c93b4e0 r13 0x1 r14 0xffffffffffffffff r15 0xaf82c397 rip 0xffffffff8214fe38 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c938ed0 ss 0 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=248638 pid=7363 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=53, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c93a550,0xffff80002a7bda18 process=0xffff8000ffff8498 user=0xffff80003c934000, vmspace=0xfffffd806c992b90 estcpu=3, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 79867 137248 18719 0 2 0 syz-executor 79867 242611 18719 0 3 0x4000080 fsleep syz-executor 37531 491436 9 0 2 0 syz-executor 37531 82560 9 0 2 0x4000000 syz-executor 37531 6990 9 0 3 0x4000080 fsleep syz-executor 75287 69647 1551 0 2 0 syz-executor 75287 201921 1551 0 3 0x4000080 kqsel syz-executor 75287 456937 1551 0 3 0x4000080 fsleep syz-executor 75287 245955 1551 0 3 0x4000080 fsleep syz-executor 53084 423431 37358 0 2 0 syz-executor 53084 389811 37358 0 3 0x4000080 fsleep syz-executor 77949 174867 40605 0 2 0 syz-executor 77949 237248 40605 0 2 0x4000000 syz-executor 7363 378772 75987 0 2 0 syz-executor * 7363 248638 75987 0 7 0x4000000 syz-executor 18719 117560 27229 0 3 0x82 nanoslp syz-executor 92324 105669 27229 0 2 0x2 syz-executor 1551 102960 27229 0 3 0x82 nanoslp syz-executor 40605 282138 27229 0 3 0x82 nanoslp syz-executor 75987 383108 27229 0 3 0x82 nanoslp syz-executor 9 100880 27229 0 3 0x82 nanoslp syz-executor 35321 339015 27229 0 2 0x2 syz-executor 37358 428679 27229 0 3 0x82 nanoslp syz-executor 27229 109227 56012 0 3 0x82 kqread syz-executor 56012 274126 78418 0 3 0x10008a sigsusp ksh 78418 230402 20098 0 3 0x98 kqread sshd-session 20098 216906 33158 0 3 0x92 kqread sshd-session 70673 267610 1 0 3 0x100083 ttyin getty 33158 36804 1 0 3 0x88 kqread sshd 29808 510965 7986 73 3 0x1100090 kqread syslogd 7986 382112 1 0 3 0x100082 sbwait syslogd 47710 511104 1 0 3 0x100080 kqread resolvd 29465 95038 44872 77 3 0x100092 kqread dhcpleased 98631 399207 44872 77 3 0x100092 kqread dhcpleased 44872 37347 1 0 3 0x80 kqread dhcpleased 87550 239161 0 0 3 0x14200 bored smr 70314 25010 0 0 2 0x14200 zerothread 35617 349938 0 0 3 0x14200 aiodoned aiodoned 69321 146631 0 0 3 0x14200 syncer update 13270 188949 0 0 3 0x14200 cleaner cleaner 96725 198584 0 0 3 0x14200 reaper reaper 62748 181910 0 0 3 0x14200 pgdaemon pagedaemon 32896 327354 0 0 3 0x14200 bored viomb 55646 9266 0 0 3 0x40014200 acpi0 acpi0 24357 443935 0 0 3 0x14200 bored softnet0 24280 77430 0 0 3 0x14200 smrbar systqmp 78070 368921 0 0 3 0x14200 bored systq 1407 29265 0 0 2 0x40014200 softclock 43758 466571 0 0 3 0x40014200 idle0 1 16322 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11031 12173K 12555K 166960K 12217 0 pcb 21 12K 12K 166960K 41 0 rtable 223 6K 7K 166960K 373 0 pf 28 12K 12K 166960K 30 0 ifaddr 40 7K 7K 166960K 44 0 ifgroup 46 2K 2K 166960K 50 0 sysctl 1 1K 9K 166960K 5 0 counters 32 17K 17K 166960K 33 0 ioctlops 0 0K 2K 166960K 35 0 iov 0 0K 1K 166960K 2 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1342 84K 85K 166960K 1397 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 1K 166960K 2 0 VM map 2 1K 1K 166960K 2 0 sem 5 0K 0K 166960K 5 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 89K 166960K 181 0 sigio 0 0K 0K 166960K 1 0 proc 60 59K 100K 166960K 474 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 in_multi 88 6K 7K 166960K 99 0 ether_multi 1 0K 0K 166960K 1 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 49 228K 228K 166960K 49 0 exec 0 0K 1K 166960K 366 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 221 151K 160K 166960K 3293 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 37 74K 96K 166960K 1259 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 26 2K 2K 166960K 27 0 temp 35 8662K 8726K 166960K 5164 0 kqueue 16 26K 26K 166960K 32 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 38 0 35 1 0 1 1 0 8 0 rtentry 136 112 0 12 4 0 4 4 0 8 0 unpcb 144 54 0 38 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 17 0 13 1 0 1 1 0 8 0 arp 96 18 0 2 1 0 1 1 0 8 0 inpcb 328 93 0 80 2 0 2 2 0 8 0 nd6 112 24 0 3 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 459 0 0 29 0 29 29 0 8 0 art_table 40 461 0 0 5 0 5 5 0 8 0 art_node 32 112 0 11 1 0 1 1 0 8 0 semapl 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 1632 0 128 95 0 95 95 0 8 0 ffsino 256 1632 0 128 95 0 95 95 0 8 0 nchpl 144 1883 0 195 63 0 63 63 0 8 0 vnodes 216 1741 0 0 97 0 97 97 0 8 0 namei 1024 5445 0 5445 2 0 2 2 0 8 2 kstatmem 264 22 0 2 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 6100 0 6100 2 0 2 2 1 8 2 plimitpl 152 27 0 11 1 0 1 1 0 8 0 sigapl 424 470 0 429 6 0 6 6 0 8 0 knotepl 120 5855 0 5302 17 0 17 17 0 8 0 kqueuepl 184 33 0 19 1 0 1 1 0 8 0 pipepl 304 122 0 95 3 0 3 3 0 8 0 fdescpl 448 457 0 429 5 0 5 5 0 8 1 filepl 120 1602 0 1384 7 0 7 7 0 8 0 lockfpl 104 17 0 14 1 0 1 1 0 8 0 lockfspl 48 10 0 7 1 0 1 1 0 8 0 sessionpl 144 21 0 13 1 0 1 1 0 8 0 pgrppl 48 34 0 17 1 0 1 1 0 8 0 ucredpl 104 87 0 75 1 0 1 1 0 8 0 zombiepl 144 429 0 429 1 0 1 1 0 8 1 processpl 1152 470 0 429 4 0 4 4 0 8 0 procpl 664 534 0 484 5 0 5 5 0 8 0 sosppl 176 1 0 1 1 0 1 1 0 8 1 sockpl 552 186 0 154 3 0 3 3 0 8 0 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 2510 0 2457 16 1 15 16 0 8 7 mcl2k 2048 262 0 261 2 0 2 2 0 8 1 mtagpl 96 9 0 4 1 0 1 1 0 8 0 mbufpl 256 4530 0 4382 11 0 11 11 0 8 1 bufpl 280 2385 0 118 162 0 162 162 0 8 0 anonpl 24 95824 0 92553 22 0 22 22 0 187 1 amapchunkpl 152 9202 0 8755 20 0 20 20 0 158 1 amappl16 200 1686 0 1649 5 0 5 5 0 8 3 amappl15 192 5 0 5 1 0 1 1 0 8 1 amappl14 184 4 0 4 1 0 1 1 0 8 1 amappl13 176 408 0 407 1 0 1 1 0 8 0 amappl12 168 800 0 763 3 0 3 3 0 8 1 amappl11 160 16 0 16 1 0 1 1 0 8 1 amappl10 152 41 0 31 1 0 1 1 0 8 0 amappl9 144 279 0 279 1 0 1 1 0 8 1 amappl8 136 36 0 35 1 0 1 1 0 8 0 amappl7 128 79 0 78 1 0 1 1 0 8 0 amappl6 120 289 0 278 1 0 1 1 0 8 0 amappl5 112 70 0 63 1 0 1 1 0 8 0 amappl4 104 376 0 353 1 0 1 1 0 8 0 amappl3 96 1475 0 1390 3 0 3 3 0 8 0 amappl2 88 564 0 495 2 0 2 2 0 8 0 amappl1 80 8977 0 8451 13 0 13 13 0 8 0 amappl 88 2583 0 2432 4 0 4 4 0 92 0 uvmvnodes 80 97 0 0 2 0 2 2 0 8 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 6 0 6 1 0 1 1 0 8 1 dma128 128 253 0 253 1 0 1 1 0 8 1 dma64 64 6 0 6 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 457 0 429 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 457 0 429 1 0 1 1 0 8 0 vmmpekpl 168 5341 0 5314 2 0 2 2 0 8 0 vmmpepl 168 36903 0 35183 82 0 82 82 0 357 3 vmsppl 368 456 0 429 4 0 4 4 0 8 1 rwobjpl 40 13197 0 12270 11 0 11 11 0 8 0 pdppl 4096 920 0 858 92 16 76 78 0 8 14 pvpl 32 222598 0 213462 81 0 81 81 0 265 0 pmappl 216 456 0 429 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 363 0 17 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff80003c93b4e0,ffffffffffffffff,0,af82c397,fffffd807e56d0d8,fffffd8007bfd820) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c93b4e0,ffffffffffffffff,0,af82c397,fffffd807e56d0d8,fffffd8007bfd820) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd807e56d0d8,4,af82c397,ffffffff,ffff80003c93b4e0) at doktrace+0x560 ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd807e56d0d8,4,af82c397,ffffffff,ffff80003c93b4e0) at doktrace+0x560 sys/kern/kern_ktrace.c:502 sys_ktrace(ffff80003c93b4e0,ffff80003c939230,ffff80003c939180) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c939230) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c939230) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbb538ed8b0, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff80003c93b4e0,ffffffffffffffff,0,af82c397,fffffd807e56d0d8,fffffd8007bfd820) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c93b4e0,ffffffffffffffff,0,af82c397,fffffd807e56d0d8,fffffd8007bfd820) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd807e56d0d8,4,af82c397,ffffffff,ffff80003c93b4e0) at doktrace+0x560 ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd807e56d0d8,4,af82c397,ffffffff,ffff80003c93b4e0) at doktrace+0x560 sys/kern/kern_ktrace.c:502 sys_ktrace(ffff80003c93b4e0,ffff80003c939230,ffff80003c939180) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c939230) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c939230) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbb538ed8b0, count: -5