uvm_fault(0xfffffd806ba59e70, 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 *141517 11355 0 0 0x4000000 0 syz-executor ktrops(ffff80002a7dc548,ffffffffffffffff,0,a0c7df9f,fffffd806bdce7d8,fffffd8007bfb680) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7dc548,ffffffffffffffff,0,a0c7df9f,fffffd806bdce7d8,fffffd8007bfb680) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806bdce7d8,4,20c7df9f,0,ffff80002a7dc548) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806bdce7d8,4,20c7df9f,0,ffff80002a7dc548) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7dc548,ffff80003c98b590,ffff80003c98b4e0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c98b590) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c98b590) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x33a4e18f090, 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(0xfffffd806ba59e70, 0xf, 0, 1) -> e ddb> trace ktrops(ffff80002a7dc548,ffffffffffffffff,0,a0c7df9f,fffffd806bdce7d8,fffffd8007bfb680) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7dc548,ffffffffffffffff,0,a0c7df9f,fffffd806bdce7d8,fffffd8007bfb680) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806bdce7d8,4,20c7df9f,0,ffff80002a7dc548) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806bdce7d8,4,20c7df9f,0,ffff80002a7dc548) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7dc548,ffff80003c98b590,ffff80003c98b4e0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c98b590) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c98b590) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x33a4e18f090, count: -5 ddb> show registers rdi 0xffff800030532000 rsi 0xb46 rbp 0xffff80003c98b2b0 rbx 0xfffffd8007bfb680 rdx 0xffff800030532000 rcx 0xb45 rax 0xffffffff82a92eb3 ktrops+0x43 r8 0xfffffd806bdce7d8 r9 0xfffffd8007bfb680 r10 0x6a295993480afa31 r11 0x8c561329b3c0c580 r12 0xffff80002a7dc548 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0xa0c7df9f rip 0xffffffff82a92ec8 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c98b230 ss 0 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=141517 pid=11355 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=83, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a7dc018,0xffff80002a7dd250 process=0xffff80002cd2a418 user=0xffff80003c986000, vmspace=0xfffffd806ba59e70 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 11355 377530 58546 0 2 0 syz-executor *11355 141517 58546 0 7 0x4000000 syz-executor 26338 798 17775 0 2 0 syz-executor 26338 128210 17775 0 3 0x4000080 fsleep syz-executor 10415 289168 25226 0 2 0 syz-executor 10415 171743 25226 0 3 0x4000080 fsleep syz-executor 44290 439043 47287 0 4 0x82004 syz-executor 44290 894 47287 0 4 0x4082004 syz-executor 44290 31926 47287 0 2 0x4002004 syz-executor 44290 121877 47287 0 4 0x4082004 syz-executor 5695 203573 89918 0 2 0 syz-executor 5695 12353 89918 0 3 0x4000080 fsleep syz-executor 76297 431818 1 0 3 0x100083 ttyopn getty 25226 455808 73588 0 3 0x82 nanoslp syz-executor 24001 109727 0 0 3 0x14200 bored sosplice 89918 279276 73588 0 3 0x82 nanoslp syz-executor 50718 350747 73588 0 2 0x2 syz-executor 32322 217628 73588 0 2 0x2 syz-executor 58546 502643 73588 0 3 0x82 nanoslp syz-executor 17775 478594 73588 0 3 0x82 nanoslp syz-executor 20547 220015 73588 0 2 0x2 syz-executor 47287 403734 73588 0 3 0x82 nanoslp syz-executor 73588 344976 7164 0 3 0x82 kqread syz-executor 7164 22554 89761 0 3 0x10008a sigsusp ksh 89761 232786 9304 0 3 0x98 kqread sshd-session 9304 230831 15127 0 3 0x92 kqread sshd-session 15127 446810 1 0 3 0x88 kqread sshd 93325 111432 23064 73 3 0x1100090 kqread syslogd 23064 170438 1 0 3 0x100082 sbwait syslogd 20116 138509 1 0 3 0x100080 kqread resolvd 38006 461737 74324 77 3 0x100092 kqread dhcpleased 12518 420062 74324 77 3 0x100092 kqread dhcpleased 74324 305091 1 0 3 0x80 kqread dhcpleased 37075 384821 0 0 3 0x14200 bored smr 9246 148210 0 0 2 0x14200 zerothread 18242 214030 0 0 3 0x14200 aiodoned aiodoned 73712 295235 0 0 3 0x14200 syncer update 95877 324092 0 0 3 0x14200 cleaner cleaner 4799 388954 0 0 3 0x14200 reaper reaper 10342 74899 0 0 3 0x14200 pgdaemon pagedaemon 8616 9091 0 0 3 0x14200 bored viomb 16870 506874 0 0 3 0x40014200 acpi0 acpi0 1406 8318 0 0 3 0x14200 bored softnet7 34853 482999 0 0 3 0x14200 bored softnet6 83698 326540 0 0 3 0x14200 bored softnet5 90419 62763 0 0 3 0x14200 bored softnet4 23057 516488 0 0 3 0x14200 bored softnet3 8404 30102 0 0 3 0x14200 bored softnet2 42104 230179 0 0 3 0x14200 bored softnet1 76510 64223 0 0 3 0x14200 bored softnet0 75045 267153 0 0 3 0x14200 bored systqmp 4912 38470 0 0 3 0x14200 bored systq 32047 226885 0 0 3 0x40014200 tmoslp softclock 47693 31351 0 0 3 0x40014200 idle0 1 274264 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 10202 11045K 11661K 166960K 12193 0 pcb 17 14K 15K 166960K 169 0 rtable 206 8K 9K 166960K 477 0 pf 29 12K 131084K 166960K 73 0 ifaddr 37 6K 7K 166960K 67 0 ifgroup 46 2K 2K 166960K 93 0 sysctl 3 1K 9K 166960K 74 0 counters 31 17K 18K 166960K 57 0 ioctlops 0 0K 4K 166960K 144 0 iov 0 0K 28K 166960K 42 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1427 90K 90K 166960K 1954 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 14 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 23 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 97K 166960K 747 0 sigio 0 0K 0K 166960K 13 0 proc 60 59K 124K 166960K 574 0 subproc 72 4K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 92 0 in_multi 85 6K 7K 166960K 133 0 ether_multi 1 0K 0K 166960K 4 0 mrt 1 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 217 970K 970K 166960K 217 0 exec 1 0K 2K 166960K 568 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 206 155K 160K 166960K 8350 0 UVM aobj 55 6K 6K 166960K 55 0 pinsyscall 37 74K 96K 166960K 1824 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 55 0 NDP 10 0K 2K 166960K 45 0 temp 65 8640K 8897K 166960K 31414 0 kqueue 13 20K 34K 166960K 154 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 120 147 0 143 2 1 1 2 0 8 0 rtentry 136 120 0 39 4 0 4 4 0 8 0 unpcb 144 667 0 646 8 7 1 8 0 8 0 syncache 336 6 0 6 3 2 1 1 0 8 1 tcpqe 32 7 0 7 2 1 1 1 0 8 1 tcpcb 736 286 0 281 10 3 7 7 0 8 6 arp 88 13 0 3 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 2 0 1 1 0 1 1 0 8 0 inpcb 328 814 0 805 10 3 7 7 0 8 5 ip6q 72 2 0 0 1 0 1 1 0 8 0 ip6af 40 2 0 0 1 0 1 1 0 8 0 nd6 104 23 0 6 1 0 1 1 0 8 0 pkpcb 40 10 0 10 2 1 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1072 22 0 22 2 1 1 1 0 8 1 pfosfp 40 3 0 3 1 0 1 1 0 8 1 pfosfpen 112 3 0 3 1 0 1 1 0 8 1 pfrktable 1344 2 0 2 2 1 1 1 0 8 1 pftag 88 3 0 0 1 0 1 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 2 0 0 1 0 1 1 0 8 0 pfstate 384 1 0 0 1 0 1 1 0 8 0 pfrule 1344 5 0 5 2 1 1 1 0 8 1 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 565 0 178 30 3 27 29 0 8 1 art_table 40 569 0 178 5 0 5 5 0 8 0 art_node 32 119 0 47 1 0 1 1 0 8 0 sysvmsgpl 40 12 0 7 1 0 1 1 0 8 0 semupl 112 3 0 3 2 1 1 1 0 8 1 semapl 112 20 0 10 1 0 1 1 0 8 0 shmpl 112 52 0 0 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2806 0 1308 95 0 95 95 0 8 0 ffsino 256 2806 0 1308 95 0 95 95 0 8 0 nchpl 144 3886 0 2207 63 0 63 63 0 8 0 rtmask 32 5 0 5 3 2 1 1 0 8 1 uvmvnodes 80 3203 0 0 66 0 66 66 0 8 0 vnodes 216 3203 0 0 178 0 178 178 0 8 0 namei 1024 13087 0 13084 4 3 1 2 0 8 0 kstatmem 264 54 0 34 2 0 2 2 0 8 0 scsiplug 72 6 0 6 3 2 1 1 0 8 1 scxspl 216 12967 0 12967 16 14 2 8 1 8 2 plimitpl 152 235 0 218 1 0 1 1 0 8 0 sigapl 424 1039 0 990 7 1 6 7 0 8 0 knotepl 120 27977 0 27930 37 27 10 23 0 8 8 kqueuepl 184 372 0 362 7 6 1 4 0 8 0 pipepl 304 218 0 191 8 0 8 8 0 8 5 fdescpl 448 1013 0 985 5 1 4 5 0 8 0 filepl 120 6588 0 6368 20 6 14 14 0 8 5 lockfpl 104 510 0 506 2 1 1 2 0 8 0 lockfspl 48 218 0 214 1 0 1 1 0 8 0 sessionpl 144 26 0 18 1 0 1 1 0 8 0 pgrppl 48 44 0 28 1 0 1 1 0 8 0 ucredpl 104 1077 0 1066 1 0 1 1 0 8 0 zombiepl 144 1252 0 1252 1 0 1 1 0 8 1 processpl 1152 1039 0 990 5 1 4 5 0 8 0 procpl 664 2063 0 2007 6 0 6 6 0 8 0 sosppl 168 6 0 6 3 2 1 1 0 8 1 sockpl 552 1658 0 1624 24 16 8 17 0 8 5 mcl64k 65536 32 0 32 3 2 1 1 0 8 1 mcl16k 16384 2 0 2 1 1 0 1 0 8 0 mcl12k 12288 1 0 1 1 1 0 1 0 8 0 mcl9k 9216 1 0 1 1 1 0 1 0 8 0 mcl8k 8192 8 0 8 3 2 1 1 0 8 1 mcl4k 4096 3279 0 3229 15 7 8 13 0 8 1 mcl2k 2048 1052 0 1049 7 5 2 6 0 8 1 mtagpl 96 16 0 6 2 1 1 1 0 8 0 mbufpl 256 11037 0 10872 21 2 19 19 0 8 6 bufpl 280 4392 0 126 305 0 305 305 0 8 0 anonpl 24 160148 0 155117 69 37 32 45 0 187 0 amapchunkpl 152 26756 0 26216 32 7 25 25 0 158 1 amappl16 200 2579 0 2551 22 19 3 14 0 8 0 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 112 0 102 1 0 1 1 0 8 0 amappl13 176 3 0 3 1 1 0 1 0 8 0 amappl12 168 1644 0 1617 3 1 2 3 0 8 0 amappl11 160 48 0 38 1 0 1 1 0 8 0 amappl10 152 8 0 7 1 0 1 1 0 8 0 amappl9 144 254 0 254 1 1 0 1 0 8 0 amappl8 136 23 0 22 1 0 1 1 0 8 0 amappl7 128 103 0 92 1 0 1 1 0 8 0 amappl6 120 183 0 178 1 0 1 1 0 8 0 amappl5 112 117 0 110 1 0 1 1 0 8 0 amappl4 104 280 0 264 1 0 1 1 0 8 0 amappl3 96 5273 0 5178 4 0 4 4 0 8 1 amappl2 88 652 0 597 2 0 2 2 0 8 0 amappl1 80 11259 0 10719 16 2 14 14 0 8 1 amappl 88 7555 0 7412 6 1 5 5 0 92 0 dma65536 65536 1 0 1 1 1 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 255 0 255 3 2 1 1 0 8 1 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 54 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1012 0 985 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1012 0 985 1 0 1 1 0 8 0 vmmpekpl 168 9718 0 9679 3 0 3 3 0 8 0 vmmpepl 168 68369 0 66640 100 11 89 93 0 357 5 vmsppl 368 1012 0 985 4 1 3 4 0 8 0 rwobjpl 40 23011 0 18928 43 1 42 42 0 8 0 pdppl 4096 2031 0 1970 111 44 67 83 0 8 6 pvpl 32 447669 0 436543 144 49 95 113 0 265 0 pmappl 216 1011 0 985 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 418 0 79 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff80002a7dc548,ffffffffffffffff,0,a0c7df9f,fffffd806bdce7d8,fffffd8007bfb680) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7dc548,ffffffffffffffff,0,a0c7df9f,fffffd806bdce7d8,fffffd8007bfb680) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806bdce7d8,4,20c7df9f,0,ffff80002a7dc548) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806bdce7d8,4,20c7df9f,0,ffff80002a7dc548) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7dc548,ffff80003c98b590,ffff80003c98b4e0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c98b590) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c98b590) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x33a4e18f090, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff80002a7dc548,ffffffffffffffff,0,a0c7df9f,fffffd806bdce7d8,fffffd8007bfb680) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7dc548,ffffffffffffffff,0,a0c7df9f,fffffd806bdce7d8,fffffd8007bfb680) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806bdce7d8,4,20c7df9f,0,ffff80002a7dc548) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806bdce7d8,4,20c7df9f,0,ffff80002a7dc548) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7dc548,ffff80003c98b590,ffff80003c98b4e0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c98b590) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c98b590) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x33a4e18f090, count: -5