uvm_fault(0xfffffd806ffbf748, 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 *103715 69706 0 0 0x4000000 0 syz-executor ktrops(ffff800033905cb0,ffffffffffffffff,0,e0c7c7bf,fffffd8062c95cb0,fffffd8007bfd410) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff800033905cb0,ffffffffffffffff,0,e0c7c7bf,fffffd8062c95cb0,fffffd8007bfd410) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd8062c95cb0,4,60c7c7bf,0,ffff800033905cb0) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd8062c95cb0,4,60c7c7bf,0,ffff800033905cb0) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff800033905cb0,ffff80003c987e60,ffff80003c987db0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c987e60) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c987e60) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x34e0c987c80, 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(0xfffffd806ffbf748, 0xf, 0, 1) -> e ddb> trace ktrops(ffff800033905cb0,ffffffffffffffff,0,e0c7c7bf,fffffd8062c95cb0,fffffd8007bfd410) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff800033905cb0,ffffffffffffffff,0,e0c7c7bf,fffffd8062c95cb0,fffffd8007bfd410) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd8062c95cb0,4,60c7c7bf,0,ffff800033905cb0) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd8062c95cb0,4,60c7c7bf,0,ffff800033905cb0) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff800033905cb0,ffff80003c987e60,ffff80003c987db0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c987e60) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c987e60) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x34e0c987c80, count: -5 ddb> show registers rdi 0xffff800033906000 rsi 0xec4 rbp 0xffff80003c987b80 rbx 0xfffffd8007bfd410 rdx 0xffff800033906000 rcx 0xec3 rax 0xffffffff81c84dc3 ktrops+0x43 r8 0xfffffd8062c95cb0 r9 0xfffffd8007bfd410 r10 0x4cf369827de56516 r11 0xcc15c3671465dc8f r12 0xffff800033905cb0 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0xe0c7c7bf rip 0xffffffff81c84dd8 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c987b00 ss 0x10 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=103715 pid=69706 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=75, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800033904558,0xffff80002a7bc030 process=0xffff800034119f98 user=0xffff80003c982000, vmspace=0xfffffd806ffbf748 estcpu=25, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 22536 235021 47942 0 3 0x80 nanoslp syz-executor 22536 479751 47942 0 3 0x4000080 fsleep syz-executor 22536 508254 47942 0 3 0x4000080 fsleep syz-executor 32409 251837 73004 0 2 0 syz-executor 32409 368631 73004 0 3 0x4000080 fsleep syz-executor 32409 330585 73004 0 2 0x4000000 syz-executor 32409 295975 73004 0 3 0x4000080 fsleep syz-executor 69706 338133 17087 0 3 0x80 nanoslp syz-executor *69706 103715 17087 0 7 0x4000000 syz-executor 69706 323459 17087 0 3 0x4000080 fsleep syz-executor 69965 440529 0 0 3 0x14200 acct acct 24769 27514 1 0 3 0x80 nanoslp init 40818 350540 50274 0 2 0x2 syz-executor 73004 246656 50274 0 3 0x82 nanoslp syz-executor 87378 383486 50274 0 2 0x2 syz-executor 17087 484094 50274 0 3 0x82 nanoslp syz-executor 91190 479155 50274 0 2 0x2 syz-executor 42004 184467 50274 0 2 0x2 syz-executor 44431 356999 50274 0 2 0x2 syz-executor 47942 83387 50274 0 3 0x82 nanoslp syz-executor 50274 372226 66445 0 3 0x82 kqread syz-executor 66445 305581 48838 0 3 0x10008a sigsusp ksh 48838 18127 35666 0 3 0x98 kqread sshd-session 35666 414173 73244 0 3 0x92 kqread sshd-session 73244 258738 1 0 3 0x88 kqread sshd 95587 40115 43354 73 3 0x1100090 kqread syslogd 43354 190248 1 0 3 0x100082 sbwait syslogd 99913 354878 1 0 3 0x100080 kqread resolvd 95855 5932 78014 77 3 0x100092 kqread dhcpleased 1071 287573 78014 77 3 0x100092 kqread dhcpleased 78014 520248 1 0 3 0x80 kqread dhcpleased 55503 494900 0 0 3 0x14200 bored smr 54774 53059 0 0 2 0x14200 zerothread 18002 215324 0 0 3 0x14200 aiodoned aiodoned 7295 189816 0 0 3 0x14200 syncer update 4005 485836 0 0 3 0x14200 cleaner cleaner 94014 294742 0 0 3 0x14200 reaper reaper 80301 305863 0 0 3 0x14200 pgdaemon pagedaemon 8915 111133 0 0 3 0x14200 bored viomb 27671 109104 0 0 3 0x40014200 acpi0 acpi0 21753 404090 0 0 3 0x14200 bored softnet0 73863 96689 0 0 3 0x14200 bored systqmp 67913 247564 0 0 3 0x14200 bored systq 6454 386852 0 0 3 0x40014200 tmoslp softclock 20290 193274 0 0 3 0x40014200 idle0 1 390763 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 11041 12117K 13242K 166960K 13585 0 pcb 17 16K 18K 166960K 119 0 rtable 254 8K 8K 166960K 439 0 pf 30 12K 13K 166960K 73 0 ifaddr 42 7K 7K 166960K 72 0 ifgroup 50 2K 2K 166960K 105 0 sysctl 3 1K 9K 166960K 12 0 counters 33 17K 18K 166960K 61 0 ioctlops 0 0K 4K 166960K 105 0 iov 0 0K 28K 166960K 28 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1510 95K 95K 166960K 2271 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 10 0 VM map 2 1K 1K 166960K 2 0 sem 10 0K 0K 166960K 48 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 13 45K 106K 166960K 580 0 sigio 0 0K 0K 166960K 6 0 proc 51 50K 100K 166960K 520 0 subproc 72 4K 4K 166960K 73 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 2 0K 0K 166960K 63 0 in_multi 98 7K 7K 166960K 146 0 ether_multi 1 0K 0K 166960K 5 0 mrt 1 0K 0K 166960K 4 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 91 413K 413K 166960K 91 0 exec 0 0K 1K 166960K 441 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 198 150K 165K 166960K 6851 0 UVM aobj 8 2K 4K 166960K 10 0 pinsyscall 33 66K 95K 166960K 1676 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 218 0 NDP 11 0K 1K 166960K 47 0 temp 44 8668K 8774K 166960K 31382 0 kqueue 13 20K 30K 166960K 83 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 68 0 65 1 0 1 1 0 8 0 rtentry 136 134 0 21 4 0 4 4 0 8 0 unpcb 144 666 0 651 5 0 5 5 0 8 4 syncache 336 9 0 9 1 0 1 1 0 8 1 tcpqe 32 3 0 3 1 0 1 1 0 8 1 tcpcb 736 388 0 380 13 3 10 13 0 8 8 arp 96 19 0 2 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 1 0 0 1 0 1 1 0 8 0 inpcb 328 860 0 848 13 3 10 13 0 8 8 ip6q 72 3 0 1 1 0 1 1 0 8 0 ip6af 40 3 0 2 1 0 1 1 0 8 0 nd6 112 32 0 5 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 22 0 22 1 0 1 1 0 8 1 pppxif 1384 6 0 6 1 0 1 1 0 8 1 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 532 0 83 31 0 31 31 0 8 2 art_table 40 534 0 83 5 0 5 5 0 8 0 art_node 32 132 0 30 1 0 1 1 0 8 0 semupl 112 3 0 3 1 0 1 1 0 8 1 semapl 112 46 0 38 1 0 1 1 0 8 0 shmpl 112 7 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2614 0 1112 95 0 95 95 0 8 0 ffsino 256 2615 0 1112 95 0 95 95 0 8 0 nchpl 144 3408 0 1719 64 0 64 64 0 8 0 vnodes 216 3211 0 0 179 0 179 179 0 8 0 namei 1024 12575 0 12574 2 0 2 2 0 8 1 kstatmem 264 60 0 38 2 0 2 2 0 8 0 scxspl 216 10285 0 10285 8 0 8 8 1 8 8 plimitpl 152 100 0 84 1 0 1 1 0 8 0 sigapl 424 870 0 831 6 0 6 6 0 8 1 knotepl 120 20371 0 20324 15 5 10 15 0 8 8 kqueuepl 184 257 0 248 5 0 5 5 0 8 4 pipepl 304 153 0 124 3 0 3 3 0 8 0 fdescpl 448 855 0 830 5 0 5 5 0 8 1 filepl 120 6601 0 6381 15 0 15 15 0 8 7 lockfpl 104 149 0 146 1 0 1 1 0 8 0 lockfspl 48 67 0 64 1 0 1 1 0 8 0 sessionpl 144 26 0 19 1 0 1 1 0 8 0 pgrppl 48 37 0 22 1 0 1 1 0 8 0 ucredpl 104 1228 0 1217 1 0 1 1 0 8 0 zombiepl 144 831 0 831 1 0 1 1 0 8 1 processpl 1152 870 0 831 4 0 4 4 0 8 0 procpl 664 1566 0 1520 6 0 6 6 0 8 0 sosppl 176 4 0 4 1 0 1 1 0 8 1 sockpl 552 1602 0 1572 13 1 12 13 0 8 8 mcl64k 65536 61 0 61 1 0 1 1 0 8 1 mcl16k 16384 68 0 68 1 0 1 1 0 8 1 mcl12k 12288 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 80 0 80 1 0 1 1 0 8 1 mcl4k 4096 3070 0 3014 15 0 15 15 0 8 7 mcl2k 2048 1071 0 1066 2 0 2 2 0 8 1 mtagpl 96 118 0 8 3 0 3 3 0 8 0 mbufpl 256 12879 0 12564 21 0 21 21 0 8 0 bufpl 280 3264 0 124 225 0 225 225 0 8 0 anonpl 24 152930 0 150142 44 0 44 44 0 187 20 amapchunkpl 152 23000 0 22614 36 0 36 36 0 158 15 amappl16 200 2973 0 2948 15 4 11 15 0 8 8 amappl15 192 3 0 3 1 0 1 1 0 8 1 amappl14 184 9 0 9 1 0 1 1 0 8 1 amappl13 176 408 0 407 1 0 1 1 0 8 0 amappl12 168 1211 0 1179 2 0 2 2 0 8 0 amappl11 160 7 0 7 1 0 1 1 0 8 1 amappl10 152 43 0 33 1 0 1 1 0 8 0 amappl9 144 247 0 247 1 0 1 1 0 8 1 amappl8 136 21 0 20 1 0 1 1 0 8 0 amappl7 128 80 0 78 1 0 1 1 0 8 0 amappl6 120 272 0 260 1 0 1 1 0 8 0 amappl5 112 76 0 69 1 0 1 1 0 8 0 amappl4 104 400 0 378 1 0 1 1 0 8 0 amappl3 96 3793 0 3723 3 0 3 3 0 8 0 amappl2 88 1007 0 942 2 0 2 2 0 8 0 amappl1 80 11737 0 11246 13 0 13 13 0 8 0 amappl 88 6042 0 5909 5 0 5 5 0 92 0 uvmvnodes 80 114 0 0 3 0 3 3 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 9 0 2 1 0 1 1 0 8 0 uaddrrnd 24 855 0 830 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 855 0 830 1 0 1 1 0 8 0 vmmpekpl 168 8479 0 8446 2 0 2 2 0 8 0 vmmpepl 168 62303 0 60774 89 0 89 89 0 357 10 vmsppl 368 854 0 830 4 0 4 4 0 8 1 rwobjpl 40 19807 0 18919 12 0 12 12 0 8 1 pdppl 4096 1717 0 1660 99 34 65 83 0 8 8 pvpl 32 389984 0 382668 115 0 115 115 0 265 32 pmappl 216 854 0 830 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 394 0 37 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff800033905cb0,ffffffffffffffff,0,e0c7c7bf,fffffd8062c95cb0,fffffd8007bfd410) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff800033905cb0,ffffffffffffffff,0,e0c7c7bf,fffffd8062c95cb0,fffffd8007bfd410) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd8062c95cb0,4,60c7c7bf,0,ffff800033905cb0) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd8062c95cb0,4,60c7c7bf,0,ffff800033905cb0) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff800033905cb0,ffff80003c987e60,ffff80003c987db0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c987e60) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c987e60) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x34e0c987c80, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff800033905cb0,ffffffffffffffff,0,e0c7c7bf,fffffd8062c95cb0,fffffd8007bfd410) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff800033905cb0,ffffffffffffffff,0,e0c7c7bf,fffffd8062c95cb0,fffffd8007bfd410) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd8062c95cb0,4,60c7c7bf,0,ffff800033905cb0) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd8062c95cb0,4,60c7c7bf,0,ffff800033905cb0) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff800033905cb0,ffff80003c987e60,ffff80003c987db0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c987e60) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c987e60) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x34e0c987c80, count: -5