uvm_fault(0xfffffd806ba23d00, 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 *517414 85235 0 0 0x4000000 0 syz-executor ktrops(ffff80002a7b54d8,ffffffffffffffff,0,a0c7df9f,fffffd807091de68,fffffd8007bfb7b8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7b54d8,ffffffffffffffff,0,a0c7df9f,fffffd807091de68,fffffd8007bfb7b8) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd807091de68,4,20c7df9f,0,ffff80002a7b54d8) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd807091de68,4,20c7df9f,0,ffff80002a7b54d8) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7b54d8,ffff80003c961550,ffff80003c9614a0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c961550) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c961550) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd16856f89d0, 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(0xfffffd806ba23d00, 0xf, 0, 1) -> e ddb> trace ktrops(ffff80002a7b54d8,ffffffffffffffff,0,a0c7df9f,fffffd807091de68,fffffd8007bfb7b8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7b54d8,ffffffffffffffff,0,a0c7df9f,fffffd807091de68,fffffd8007bfb7b8) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd807091de68,4,20c7df9f,0,ffff80002a7b54d8) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd807091de68,4,20c7df9f,0,ffff80002a7b54d8) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7b54d8,ffff80003c961550,ffff80003c9614a0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c961550) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c961550) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd16856f89d0, count: -5 ddb> show registers rdi 0xffff80002a7b54d8 rsi 0xffffffffffffffff rbp 0xffff80003c961270 rbx 0xfffffd8007bfb7b8 rdx 0 rcx 0xa0c7df9f rax 0xffff80002a7b54d8 r8 0xfffffd807091de68 r9 0xfffffd8007bfb7b8 r10 0x6a29da37fb21a035 r11 0x774114e5d34bb1ac r12 0xffff80002a7b54d8 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0xa0c7df9f rip 0xffffffff82d91208 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c9611f0 ss 0 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=517414 pid=85235 tcnt=3 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=0xffff80002a7b47e0,0xffff80002a7b5a18 process=0xffff80003a928018 user=0xffff80003c95c000, vmspace=0xfffffd806ba23d00 estcpu=34, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 1821 409437 22620 0 2 0 syz-executor 1821 323716 22620 0 3 0x4000000 vget syz-executor 85235 416647 9179 0 2 0 syz-executor *85235 517414 9179 0 7 0x4000000 syz-executor 85235 199970 9179 0 3 0x4000080 lockf syz-executor 23076 132966 63944 0 3 0x80 nanoslp syz-executor 23076 149436 63944 0 3 0x4000080 kqsel syz-executor 23076 197362 63944 0 3 0x4000080 fsleep syz-executor 26860 130856 0 0 3 0x14200 acct acct 98020 315016 79476 60929 3 0x90 nanoslp syz-executor 98020 78117 79476 60929 3 0x4000090 ttyout syz-executor 98020 81053 79476 60929 3 0x4000090 ttyin syz-executor 98020 436163 79476 60929 3 0x4000090 fsleep syz-executor 10896 149230 0 0 3 0x14200 bored sosplice 63944 310783 76091 0 3 0x82 nanoslp syz-executor 22620 367762 76091 0 3 0x82 nanoslp syz-executor 55739 274805 76091 0 2 0x2 syz-executor 81499 38002 76091 0 2 0x2 syz-executor 79476 353326 76091 0 3 0x82 nanoslp syz-executor 9179 293552 76091 0 3 0x82 nanoslp syz-executor 38521 96955 76091 0 2 0x2 syz-executor 6129 276253 76091 0 2 0x2 syz-executor 76091 51943 84835 0 3 0x82 kqread syz-executor 84835 429180 75444 0 3 0x10008a sigsusp ksh 75444 262167 77323 0 3 0x98 kqread sshd-session 77323 84940 32806 0 3 0x92 kqread sshd-session 1364 183267 1 0 3 0x100083 ttyopn getty 32806 294215 1 0 3 0x88 kqread sshd 22100 111220 92553 73 3 0x1100090 kqread syslogd 92553 518367 1 0 3 0x100082 sbwait syslogd 53099 301487 1 0 3 0x100080 kqread resolvd 57347 86822 54958 77 3 0x100092 kqread dhcpleased 89822 295071 54958 77 3 0x100092 kqread dhcpleased 54958 376464 1 0 3 0x80 kqread dhcpleased 96372 215930 0 0 3 0x14200 bored smr 55003 200741 0 0 2 0x14200 zerothread 66111 318520 0 0 3 0x14200 aiodoned aiodoned 16879 118919 0 0 3 0x14200 syncer update 52141 57469 0 0 3 0x14200 cleaner cleaner 9490 423843 0 0 3 0x14200 reaper reaper 27344 74639 0 0 3 0x14200 pgdaemon pagedaemon 95822 450460 0 0 3 0x14200 bored viomb 9642 20663 0 0 3 0x40014200 acpi0 acpi0 35836 523278 0 0 2 0x14200 softnet0 77734 488792 0 0 3 0x14200 smrbar systqmp 15674 492699 0 0 3 0x14200 bored systq 28756 221602 0 0 3 0x40014200 tmoslp softclock 83179 329939 0 0 3 0x40014200 idle0 1 12754 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 10173 11167K 12745K 166960K 12040 0 pcb 19 12K 12K 166960K 44 0 rtable 184 6K 7K 166960K 302 0 pf 26 12K 13K 166960K 42 0 ifaddr 34 6K 7K 166960K 52 0 ifgroup 42 1K 2K 166960K 62 0 sysctl 4 1K 9K 166960K 8 0 counters 30 17K 18K 166960K 42 0 ioctlops 0 0K 2K 166960K 48 0 iov 0 0K 28K 166960K 12 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1497 94K 95K 166960K 1702 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 6 0K 0K 166960K 7 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 14 49K 93K 166960K 267 0 sigio 1 0K 0K 166960K 70 0 proc 60 59K 100K 166960K 488 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 0 0K 0K 166960K 13 0 in_multi 77 5K 7K 166960K 99 0 ether_multi 1 0K 0K 166960K 2 0 mrt 0 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 67 307K 307K 166960K 67 0 exec 0 0K 2K 166960K 359 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 200 158K 172K 166960K 3909 0 UVM aobj 4 2K 2K 166960K 4 0 pinsyscall 35 70K 92K 166960K 1304 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 0K 166960K 11 0 NDP 9 0K 2K 166960K 33 0 temp 39 8630K 8695K 166960K 8730 0 kqueue 13 20K 28K 166960K 55 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 48 0 45 1 0 1 1 0 8 0 rtentry 136 104 0 26 4 0 4 4 0 8 0 unpcb 144 321 0 305 6 0 6 6 0 8 5 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 736 36 0 30 1 0 1 1 0 8 0 arp 96 12 0 4 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 328 152 0 140 2 0 2 2 0 8 1 ip6q 72 1 0 1 1 0 1 1 0 8 1 ip6af 40 2 0 2 1 0 1 1 0 8 1 nd6 104 17 0 4 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 10 0 10 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 256 460 0 48 28 0 28 28 0 8 1 art_table 40 462 0 48 5 0 5 5 0 8 0 art_node 32 104 0 34 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 3 1 0 1 1 0 8 1 semupl 112 2 0 1 1 0 1 1 0 8 0 semapl 112 5 0 1 1 0 1 1 0 8 0 shmpl 112 1 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1796 0 296 95 0 95 95 0 8 0 ffsino 256 1796 0 296 95 0 95 95 0 8 0 nchpl 144 2180 0 500 63 0 63 63 0 8 0 rtmask 32 3 0 3 1 0 1 1 0 8 1 uvmvnodes 80 2183 0 0 45 0 45 45 0 8 0 vnodes 216 2183 0 0 122 0 122 122 0 8 0 namei 1024 7052 0 7050 2 0 2 2 0 8 1 kstatmem 264 34 0 16 2 0 2 2 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 7554 0 7554 8 0 8 8 1 8 8 plimitpl 152 124 0 107 1 0 1 1 0 8 0 sigapl 424 547 0 506 6 0 6 6 0 8 0 knotepl 120 9040 0 8993 9 0 9 9 0 8 6 kqueuepl 184 91 0 80 3 0 3 3 0 8 2 pipepl 304 174 0 147 8 0 8 8 0 8 5 fdescpl 448 532 0 506 5 0 5 5 0 8 1 filepl 120 3056 0 2836 13 0 13 13 0 8 5 lockfpl 104 46 0 41 1 0 1 1 0 8 0 lockfspl 48 25 0 21 1 0 1 1 0 8 0 sessionpl 144 22 0 14 1 0 1 1 0 8 0 pgrppl 48 30 0 14 1 0 1 1 0 8 0 ucredpl 104 253 0 241 1 0 1 1 0 8 0 zombiepl 144 506 0 506 1 0 1 1 0 8 1 processpl 1152 547 0 506 4 0 4 4 0 8 0 procpl 664 774 0 725 6 0 6 6 0 8 0 sockpl 552 527 0 496 13 3 10 13 0 8 7 mcl64k 65536 42 0 42 1 0 1 1 0 8 1 mcl8k 8192 5 0 5 1 0 1 1 0 8 1 mcl4k 4096 2606 0 2552 13 0 13 13 0 8 6 mcl2k 2048 359 0 357 3 0 3 3 0 8 2 mtagpl 96 5 0 4 1 0 1 1 0 8 0 mbufpl 256 5284 0 5149 13 0 13 13 0 8 0 bufpl 280 3111 0 122 214 0 214 214 0 8 0 anonpl 24 111317 0 108370 34 0 34 34 0 187 8 amapchunkpl 152 11906 0 11507 26 0 26 26 0 158 7 amappl16 200 2004 0 1979 5 0 5 5 0 8 2 amappl15 192 8 0 7 1 0 1 1 0 8 0 amappl14 184 106 0 96 1 0 1 1 0 8 0 amappl13 176 7 0 7 1 0 1 1 0 8 1 amappl12 168 1144 0 1118 3 0 3 3 0 8 1 amappl11 160 47 0 37 1 0 1 1 0 8 0 amappl10 152 7 0 6 1 0 1 1 0 8 0 amappl9 144 254 0 254 1 0 1 1 0 8 1 amappl8 136 19 0 18 1 0 1 1 0 8 0 amappl7 128 102 0 92 1 0 1 1 0 8 0 amappl6 120 173 0 170 1 0 1 1 0 8 0 amappl5 112 111 0 105 1 0 1 1 0 8 0 amappl4 104 266 0 251 1 0 1 1 0 8 0 amappl3 96 1909 0 1833 3 0 3 3 0 8 0 amappl2 88 768 0 699 2 0 2 2 0 8 0 amappl1 80 8563 0 8023 14 0 14 14 0 8 2 amappl 88 3240 0 3104 5 0 5 5 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 6 0 6 1 0 1 1 0 8 1 dma128 128 254 0 254 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 3 0 0 1 0 1 1 0 8 0 uaddrrnd 24 532 0 506 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 532 0 506 1 0 1 1 0 8 0 vmmpekpl 168 5990 0 5963 2 0 2 2 0 8 0 vmmpepl 168 40029 0 38352 88 0 88 88 0 357 6 vmsppl 368 531 0 506 4 0 4 4 0 8 1 rwobjpl 40 15728 0 12723 31 0 31 31 0 8 0 pdppl 4096 1070 0 1012 100 32 68 80 0 8 10 pvpl 32 258965 0 251300 108 0 108 108 0 265 23 pmappl 216 531 0 506 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 370 0 32 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff80002a7b54d8,ffffffffffffffff,0,a0c7df9f,fffffd807091de68,fffffd8007bfb7b8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7b54d8,ffffffffffffffff,0,a0c7df9f,fffffd807091de68,fffffd8007bfb7b8) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd807091de68,4,20c7df9f,0,ffff80002a7b54d8) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd807091de68,4,20c7df9f,0,ffff80002a7b54d8) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7b54d8,ffff80003c961550,ffff80003c9614a0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c961550) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c961550) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd16856f89d0, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff80002a7b54d8,ffffffffffffffff,0,a0c7df9f,fffffd807091de68,fffffd8007bfb7b8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7b54d8,ffffffffffffffff,0,a0c7df9f,fffffd807091de68,fffffd8007bfb7b8) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd807091de68,4,20c7df9f,0,ffff80002a7b54d8) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd807091de68,4,20c7df9f,0,ffff80002a7b54d8) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7b54d8,ffff80003c961550,ffff80003c9614a0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c961550) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c961550) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd16856f89d0, count: -5