uvm_fault(0xfffffd806ba175d0, 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 *316631 12884 60928 0x10 0x4000000 0 syz-executor ktrops(ffff80002a7c07e8,ffffffffffffffff,0,a0c7df9f,fffffd806a9402e8,fffffd8007bfb340) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7c07e8,ffffffffffffffff,0,a0c7df9f,fffffd806a9402e8,fffffd8007bfb340) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806a9402e8,4,20c7df9f,0,ffff80002a7c07e8) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806a9402e8,4,20c7df9f,0,ffff80002a7c07e8) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7c07e8,ffff80003c975ae0,ffff80003c975a30) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c975ae0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c975ae0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd4cd933d6c0, 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(0xfffffd806ba175d0, 0xf, 0, 1) -> e ddb> trace ktrops(ffff80002a7c07e8,ffffffffffffffff,0,a0c7df9f,fffffd806a9402e8,fffffd8007bfb340) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7c07e8,ffffffffffffffff,0,a0c7df9f,fffffd806a9402e8,fffffd8007bfb340) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806a9402e8,4,20c7df9f,0,ffff80002a7c07e8) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806a9402e8,4,20c7df9f,0,ffff80002a7c07e8) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7c07e8,ffff80003c975ae0,ffff80003c975a30) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c975ae0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c975ae0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd4cd933d6c0, count: -5 ddb> show registers rdi 0xffff80003190a000 rsi 0x5c0 rbp 0xffff80003c975800 rbx 0xfffffd8007bfb340 rdx 0xffff80003190a000 rcx 0x5bf rax 0xffffffff82951bf3 ktrops+0x43 r8 0xfffffd806a9402e8 r9 0xfffffd8007bfb340 r10 0xea390223098fed7b r11 0xbe3894f905e94862 r12 0xffff80002a7c07e8 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0xa0c7df9f rip 0xffffffff82951c08 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c975780 ss 0 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=316631 pid=12884 tcnt=2 stat=onproc flags process=10 proc=4000000 runpri=17, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a7c1248,0xffffffff8398eb58 process=0xffff80003a529f98 user=0xffff80003c970000, vmspace=0xfffffd806ba175d0 estcpu=2, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 12884 506652 1355 60928 2 0x10 syz-executor *12884 316631 1355 60928 7 0x4000010 syz-executor 39834 202231 96890 0 2 0 syz-executor 39834 351508 96890 0 3 0x4000080 bell syz-executor 39834 185111 96890 0 3 0x4000080 fsleep syz-executor 77728 262726 6233 0 3 0x80 nanoslp syz-executor 77728 270409 6233 0 2 0x4000000 syz-executor 77728 137284 6233 0 3 0x4000080 fsleep syz-executor 87788 320876 11895 0 2 0 syz-executor 87788 26558 11895 0 3 0x4000080 fsleep syz-executor 96890 344926 53436 0 2 0xc82 syz-executor 5122 456234 53436 0 2 0x2 syz-executor 6233 159542 53436 0 2 0xc82 syz-executor 1355 468190 53436 0 2 0xc82 syz-executor 11895 434025 53436 0 3 0x82 nanoslp syz-executor 65066 270294 53436 0 3 0x82 nanoslp syz-executor 7554 380349 53436 0 2 0x2 syz-executor 57764 14381 53436 0 2 0xc82 syz-executor 53436 505672 98787 0 3 0x82 kqread syz-executor 98787 151676 23748 0 3 0x10008a sigsusp ksh 23748 273382 88375 0 3 0x98 kqread sshd-session 88375 58847 56846 0 3 0x92 kqread sshd-session 99071 438339 1 0 3 0x100083 ttyin getty 56846 279417 1 0 3 0x88 kqread sshd 68310 179858 20493 73 3 0x1100090 kqread syslogd 20493 304216 1 0 3 0x100082 sbwait syslogd 59619 237427 1 0 3 0x100080 kqread resolvd 49667 502454 73211 77 3 0x100092 kqread dhcpleased 67904 4921 73211 77 3 0x100092 kqread dhcpleased 73211 515161 1 0 3 0x80 kqread dhcpleased 35757 424977 0 0 3 0x14200 bored smr 77553 343796 0 0 2 0x14200 zerothread 90792 303905 0 0 3 0x14200 aiodoned aiodoned 82420 179586 0 0 3 0x14200 syncer update 78180 127958 0 0 3 0x14200 cleaner cleaner 12301 289646 0 0 3 0x14200 reaper reaper 83673 390018 0 0 3 0x14200 pgdaemon pagedaemon 4317 214546 0 0 3 0x14200 bored viomb 22949 475027 0 0 3 0x40014200 acpi0 acpi0 90803 49920 0 0 3 0x14200 bored softnet0 81669 203495 0 0 3 0x14200 smrbar systqmp 93905 318614 0 0 3 0x14200 bored systq 29373 332920 0 0 3 0x40014200 tmoslp softclock 40438 126766 0 0 3 0x40014200 idle0 1 176841 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 10167 11041K 11053K 166960K 11251 0 pcb 17 12K 12K 166960K 17 0 rtable 205 5K 5K 166960K 260 0 pf 30 12K 12K 166960K 30 0 ifaddr 42 7K 7K 166960K 44 0 ifgroup 50 2K 2K 166960K 50 0 sysctl 1 1K 9K 166960K 5 0 counters 32 17K 17K 166960K 32 0 ioctlops 0 0K 2K 166960K 30 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1338 84K 84K 166960K 1355 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 2 0K 0K 166960K 2 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 97K 166960K 139 0 sigio 0 0K 0K 166960K 1 0 proc 59 59K 124K 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 99 7K 7K 166960K 99 0 ether_multi 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 37 175K 175K 166960K 37 0 exec 0 0K 1K 166960K 348 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 217 146K 152K 166960K 2836 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 37 74K 96K 166960K 1171 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 27 2K 2K 166960K 27 0 temp 34 8634K 8698K 166960K 3699 0 kqueue 15 22K 26K 166960K 26 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 39 0 34 1 0 1 1 0 8 0 rtentry 136 95 0 1 4 0 4 4 0 8 0 unpcb 144 33 0 16 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 7 0 2 1 0 1 1 0 8 0 arp 96 10 0 0 1 0 1 1 0 8 0 inpcb 328 56 0 47 2 0 2 2 0 8 1 nd6 112 16 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 437 0 0 28 0 28 28 0 8 0 art_table 40 438 0 0 5 0 5 5 0 8 0 art_node 32 95 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1550 0 43 95 0 95 95 0 8 0 ffsino 256 1550 0 43 95 0 95 95 0 8 0 nchpl 144 1740 0 54 63 0 63 63 0 8 0 vnodes 216 1635 0 0 91 0 91 91 0 8 0 namei 1024 5092 0 5090 2 0 2 2 0 8 1 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 6280 0 6280 8 0 8 8 1 8 8 plimitpl 152 28 0 12 1 0 1 1 0 8 0 sigapl 424 416 0 375 6 0 6 6 0 8 1 knotepl 120 3553 0 3506 14 0 14 14 0 8 12 kqueuepl 184 20 0 10 1 0 1 1 0 8 0 pipepl 304 100 0 73 3 0 3 3 0 8 0 fdescpl 448 403 0 375 5 0 5 5 0 8 1 filepl 120 1307 0 1087 7 0 7 7 0 8 0 lockfpl 104 9 0 6 1 0 1 1 0 8 0 lockfspl 48 6 0 3 1 0 1 1 0 8 0 sessionpl 144 21 0 13 1 0 1 1 0 8 0 pgrppl 48 30 0 13 1 0 1 1 0 8 0 ucredpl 104 80 0 67 1 0 1 1 0 8 0 zombiepl 144 377 0 375 1 0 1 1 0 8 0 processpl 1152 416 0 375 4 0 4 4 0 8 0 procpl 664 429 0 382 5 0 5 5 0 8 0 sockpl 552 128 0 97 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 2442 0 2392 13 0 13 13 0 8 4 mcl2k 2048 149 0 145 1 0 1 1 0 8 0 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 3744 0 3609 9 0 9 9 0 8 0 bufpl 280 2914 0 117 200 0 200 200 0 8 0 anonpl 24 96424 0 93251 23 0 23 23 0 187 3 amapchunkpl 152 8024 0 7575 20 0 20 20 0 158 0 amappl16 200 1806 0 1778 5 0 5 5 0 8 3 amappl15 192 5 0 5 1 0 1 1 0 8 1 amappl14 184 109 0 99 1 0 1 1 0 8 0 amappl13 176 5 0 5 1 0 1 1 0 8 1 amappl12 168 1017 0 989 3 0 3 3 0 8 1 amappl11 160 49 0 39 1 0 1 1 0 8 0 amappl10 152 8 0 8 1 0 1 1 0 8 1 amappl9 144 250 0 250 1 0 1 1 0 8 1 amappl8 136 23 0 22 1 0 1 1 0 8 0 amappl7 128 99 0 89 1 0 1 1 0 8 0 amappl6 120 186 0 183 1 0 1 1 0 8 0 amappl5 112 113 0 107 1 0 1 1 0 8 0 amappl4 104 259 0 245 1 0 1 1 0 8 0 amappl3 96 1197 0 1111 3 0 3 3 0 8 0 amappl2 88 626 0 558 2 0 2 2 0 8 0 amappl1 80 7875 0 7326 13 0 13 13 0 8 0 amappl 88 2194 0 2041 4 0 4 4 0 92 0 uvmvnodes 80 1635 0 0 34 0 34 34 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 24 403 0 375 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 403 0 375 1 0 1 1 0 8 0 vmmpekpl 168 4768 0 4735 2 0 2 2 0 8 0 vmmpepl 168 32196 0 30430 82 0 82 82 0 357 1 vmsppl 368 402 0 375 4 0 4 4 0 8 1 rwobjpl 40 13567 0 11100 26 0 26 26 0 8 0 pdppl 4096 813 0 750 97 14 83 83 0 8 20 pvpl 32 206084 0 198185 68 0 68 68 0 265 0 pmappl 216 402 0 375 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 360 0 14 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff80002a7c07e8,ffffffffffffffff,0,a0c7df9f,fffffd806a9402e8,fffffd8007bfb340) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7c07e8,ffffffffffffffff,0,a0c7df9f,fffffd806a9402e8,fffffd8007bfb340) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806a9402e8,4,20c7df9f,0,ffff80002a7c07e8) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806a9402e8,4,20c7df9f,0,ffff80002a7c07e8) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7c07e8,ffff80003c975ae0,ffff80003c975a30) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c975ae0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c975ae0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd4cd933d6c0, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff80002a7c07e8,ffffffffffffffff,0,a0c7df9f,fffffd806a9402e8,fffffd8007bfb340) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7c07e8,ffffffffffffffff,0,a0c7df9f,fffffd806a9402e8,fffffd8007bfb340) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806a9402e8,4,20c7df9f,0,ffff80002a7c07e8) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806a9402e8,4,20c7df9f,0,ffff80002a7c07e8) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7c07e8,ffff80003c975ae0,ffff80003c975a30) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c975ae0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c975ae0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd4cd933d6c0, count: -5