uvm_fault(0xfffffd806ba3c010, 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 *420475 28719 0 0 0x4000000 0 syz-executor ktrops(ffff80002a7cd4e0,ffffffffffffffff,0,a0c7df9f,fffffd805e357b08,fffffd8007bfb8f0) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7cd4e0,ffffffffffffffff,0,a0c7df9f,fffffd805e357b08,fffffd8007bfb8f0) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd805e357b08,4,20c7df9f,0,ffff80002a7cd4e0) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd805e357b08,4,20c7df9f,0,ffff80002a7cd4e0) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7cd4e0,ffff80003c985910,ffff80003c985860) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c985910) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c985910) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x67c494ac3b0, 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(0xfffffd806ba3c010, 0xf, 0, 1) -> e ddb> trace ktrops(ffff80002a7cd4e0,ffffffffffffffff,0,a0c7df9f,fffffd805e357b08,fffffd8007bfb8f0) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7cd4e0,ffffffffffffffff,0,a0c7df9f,fffffd805e357b08,fffffd8007bfb8f0) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd805e357b08,4,20c7df9f,0,ffff80002a7cd4e0) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd805e357b08,4,20c7df9f,0,ffff80002a7cd4e0) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7cd4e0,ffff80003c985910,ffff80003c985860) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c985910) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c985910) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x67c494ac3b0, count: -5 ddb> show registers rdi 0xffff80002a7cd4e0 rsi 0xffffffffffffffff rbp 0xffff80003c985630 rbx 0xfffffd8007bfb8f0 rdx 0 rcx 0xa0c7df9f rax 0xffff80002a7cd4e0 r8 0xfffffd805e357b08 r9 0xfffffd8007bfb8f0 r10 0xd63dd28b6377872b r11 0x5f0b10af3888bb53 r12 0xffff80002a7cd4e0 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0xa0c7df9f rip 0xffffffff818a8298 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c9855b0 ss 0 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=420475 pid=28719 tcnt=4 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=81, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a7ccd18,0xffff80002a7cd258 process=0xffff80003c929218 user=0xffff80003c980000, vmspace=0xfffffd806ba3c010 estcpu=31, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 92255 521212 67733 0 2 0 syz-executor 92255 522002 67733 0 3 0x4000080 kqread syz-executor 10750 363173 97825 0 2 0 syz-executor 10750 438479 97825 0 3 0x4000080 fsleep syz-executor 28719 357848 99625 0 2 0 syz-executor *28719 420475 99625 0 7 0x4000000 syz-executor 28719 475158 99625 0 2 0x4000000 syz-executor 28719 312327 99625 0 2 0x4000000 syz-executor 93242 59278 9730 0 2 0 syz-executor 93242 488174 9730 0 3 0x4000080 fsleep syz-executor 68590 183985 46668 0 3 0x80 nanoslp syz-executor 68590 58825 46668 0 3 0x4000080 bell syz-executor 68590 58791 46668 0 3 0x4000080 fsleep syz-executor 68590 77425 46668 0 3 0x4000080 fsleep syz-executor 88453 262884 0 0 3 0x14200 acct acct 46668 301790 92145 0 3 0x82 nanoslp syz-executor 39842 458108 92145 0 2 0x2 syz-executor 55222 417988 0 0 3 0x14200 bored sosplice 76880 447828 92145 0 2 0xc82 syz-executor 10064 113014 92145 0 2 0x2 syz-executor 97825 213488 92145 0 2 0xc82 syz-executor 9730 521185 92145 0 3 0x82 nanoslp syz-executor 67733 493516 92145 0 2 0xc82 syz-executor 99625 232521 92145 0 3 0x82 nanoslp syz-executor 92145 460107 72746 0 3 0x82 kqread syz-executor 72746 40126 17450 0 3 0x10008a sigsusp ksh 17450 454382 26577 0 3 0x98 kqread sshd-session 26577 123901 759 0 3 0x92 kqread sshd-session 83268 231939 1 0 3 0x100083 ttyopn getty 759 119084 1 0 3 0x88 kqread sshd 14323 352506 48714 73 3 0x1100090 kqread syslogd 48714 167934 1 0 3 0x100082 sbwait syslogd 45341 171390 1 0 3 0x100080 kqread resolvd 38135 69325 53441 77 3 0x100092 kqread dhcpleased 22758 332543 53441 77 3 0x100092 kqread dhcpleased 53441 383274 1 0 3 0x80 kqread dhcpleased 87883 397547 0 0 3 0x14200 bored smr 69778 124351 0 0 2 0x14200 zerothread 10264 119186 0 0 3 0x14200 aiodoned aiodoned 39398 125865 0 0 3 0x14200 syncer update 85440 411627 0 0 3 0x14200 cleaner cleaner 53580 303576 0 0 3 0x14200 reaper reaper 84757 275536 0 0 3 0x14200 pgdaemon pagedaemon 46772 334494 0 0 3 0x14200 bored viomb 54463 57152 0 0 3 0x40014200 acpi0 acpi0 19998 447753 0 0 3 0x14200 bored softnet0 75788 41040 0 0 3 0x14200 bored systqmp 85117 510699 0 0 3 0x14200 bored systq 99012 183145 0 0 3 0x40014200 tmoslp softclock 32891 132857 0 0 3 0x40014200 idle0 1 454993 0 0 3 0x80082 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 10201 11049K 11319K 166960K 12686 0 pcb 17 16K 18K 166960K 275 0 rtable 188 8K 9K 166960K 591 0 pf 28 12K 76K 166960K 179 0 ifaddr 35 6K 7K 166960K 102 0 ifgroup 46 2K 2K 166960K 156 0 sysctl 3 1K 9K 166960K 14 0 counters 31 17K 18K 166960K 120 0 ioctlops 0 0K 4K 166960K 256 0 iov 0 0K 16K 166960K 130 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1432 90K 90K 166960K 2324 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 34 0 VM map 2 1K 1K 166960K 2 0 sem 3 1K 1K 166960K 5 0 dirhash 12 2K 3K 166960K 51 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 15 53K 240K 166960K 1215 0 sigio 0 0K 0K 166960K 230 0 proc 61 59K 124K 166960K 657 0 subproc 72 4K 4K 166960K 92 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 421 0 in_multi 82 6K 7K 166960K 191 0 ether_multi 1 0K 0K 166960K 17 0 mrt 1 0K 0K 166960K 9 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 247 1102K 1102K 166960K 247 0 exec 0 0K 1K 166960K 534 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 220 151K 170K 166960K 11998 0 UVM aobj 81 5K 5K 166960K 85 0 pinsyscall 37 74K 96K 166960K 2296 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 54 0 NDP 10 0K 2K 166960K 66 0 temp 84 8644K 8770K 166960K 54317 0 kqueue 14 22K 30K 166960K 229 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 120 183 0 179 3 0 3 3 0 8 2 rtentry 136 160 0 88 4 0 4 4 0 8 0 unpcb 144 768 0 751 2 0 2 2 0 8 1 syncache 336 5 0 5 2 1 1 1 0 8 1 tcpcb 736 367 0 363 5 3 2 4 0 8 1 arp 96 21 0 10 1 0 1 1 0 8 0 ipq 40 2 0 0 1 0 1 1 0 8 0 ipqe 40 3 0 1 1 0 1 1 0 8 0 inpcb 328 1265 0 1255 16 9 7 10 0 8 5 ip6q 72 6 0 3 1 0 1 1 0 8 0 ip6af 40 11 0 8 1 0 1 1 0 8 0 nd6 104 29 0 15 1 0 1 1 0 8 0 pkpcb 40 7 0 7 2 1 1 1 0 8 1 kcovpl 48 10 0 2 1 0 1 1 0 8 0 ppxss 1072 74 0 74 2 1 1 1 0 8 1 pppxif 1384 42 0 42 2 1 1 1 0 8 1 rttmr 136 2 0 2 1 0 1 1 0 8 1 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 712 0 373 29 0 29 29 0 8 4 art_table 40 716 0 373 5 0 5 5 0 8 0 art_node 32 156 0 92 1 0 1 1 0 8 0 sysvmsgpl 40 17 0 10 1 0 1 1 0 8 0 semapl 112 1 0 0 1 0 1 1 0 8 0 shmpl 112 82 0 4 3 0 3 3 0 8 0 dirhash 1024 43 0 26 3 0 3 3 0 8 0 dino2pl 256 3638 0 2141 95 0 95 95 0 8 0 ffsino 256 3638 0 2141 95 0 95 95 0 8 0 nchpl 144 5296 0 3605 64 0 64 64 0 8 1 rtmask 32 4 0 4 2 1 1 1 0 8 1 uvmvnodes 80 4270 0 0 88 0 88 88 0 8 0 vnodes 216 4270 0 0 238 0 238 238 0 8 0 namei 1024 19414 0 19413 2 1 1 2 0 8 0 kstatmem 264 92 0 72 2 0 2 2 0 8 0 scsiplug 72 6 0 6 1 0 1 1 0 8 1 scxspl 216 21825 0 21825 15 7 8 8 1 8 8 plimitpl 152 686 0 669 1 0 1 1 0 8 0 sigapl 424 1481 0 1438 6 0 6 6 0 8 0 knotepl 120 76384 0 76332 26 16 10 19 0 8 8 kqueuepl 184 616 0 606 7 3 4 4 0 8 3 pipepl 304 256 0 229 5 2 3 5 0 8 0 fdescpl 448 1464 0 1436 5 1 4 5 0 8 0 filepl 120 10103 0 9889 14 3 11 12 0 8 4 lockfpl 104 601 0 599 1 0 1 1 0 8 0 lockfspl 48 173 0 171 1 0 1 1 0 8 0 sessionpl 144 25 0 17 1 0 1 1 0 8 0 pgrppl 48 46 0 30 1 0 1 1 0 8 0 ucredpl 104 1506 0 1495 1 0 1 1 0 8 0 zombiepl 144 1439 0 1438 2 1 1 1 0 8 0 processpl 1152 1481 0 1438 4 0 4 4 0 8 0 procpl 664 3045 0 2993 6 0 6 6 0 8 1 sosppl 168 11 0 10 2 1 1 1 0 8 0 sockpl 552 2255 0 2224 15 7 8 10 0 8 5 mcl64k 65536 82 0 81 1 0 1 1 0 8 0 mcl16k 16384 4 0 4 1 0 1 1 0 8 1 mcl12k 12288 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 11 0 11 2 1 1 1 0 8 1 mcl4k 4096 3845 0 3795 14 6 8 13 0 8 1 mcl2k2 2112 2 0 2 1 0 1 1 0 8 1 mcl2k 2048 2076 0 2069 3 1 2 2 0 8 1 mtagpl 96 5 0 5 2 1 1 1 0 8 1 mbufpl 256 16034 0 15865 23 8 15 19 0 8 3 bufpl 280 7554 0 1326 446 0 446 446 0 8 1 anonpl 24 230710 0 227123 57 9 48 48 0 187 7 amapchunkpl 152 42034 0 41564 42 4 38 38 0 158 18 amappl16 200 4078 0 4045 23 9 14 15 0 8 8 amappl15 192 15 0 15 1 1 0 1 0 8 0 amappl14 184 113 0 103 1 0 1 1 0 8 0 amappl13 176 7 0 7 2 1 1 1 0 8 1 amappl12 168 2120 0 2092 3 1 2 3 0 8 0 amappl11 160 59 0 49 1 0 1 1 0 8 0 amappl10 152 6 0 5 2 1 1 1 0 8 0 amappl9 144 252 0 251 1 0 1 1 0 8 0 amappl8 136 52 0 50 1 0 1 1 0 8 0 amappl7 128 113 0 103 1 0 1 1 0 8 0 amappl6 120 193 0 190 1 0 1 1 0 8 0 amappl5 112 127 0 120 1 0 1 1 0 8 0 amappl4 104 318 0 301 1 0 1 1 0 8 0 amappl3 96 7115 0 7030 3 0 3 3 0 8 0 amappl2 88 1716 0 1646 2 0 2 2 0 8 0 amappl1 80 12718 0 12175 14 1 13 13 0 8 0 amappl 88 11107 0 10952 5 0 5 5 0 92 0 dma16384 16384 1 0 1 1 0 1 1 0 8 1 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 1 0 1 1 0 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 7 0 7 2 1 1 1 0 8 1 dma128 128 255 0 255 2 1 1 1 0 8 1 dma64 64 7 0 7 2 1 1 1 0 8 1 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 84 0 4 2 0 2 2 0 8 0 uaddrrnd 24 1464 0 1436 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1464 0 1436 1 0 1 1 0 8 0 vmmpekpl 168 12167 0 12134 2 0 2 2 0 8 0 vmmpepl 168 95541 0 93739 103 8 95 95 0 357 9 vmsppl 368 1463 0 1436 4 1 3 4 0 8 0 rwobjpl 40 29575 0 24382 53 0 53 53 0 8 0 pdppl 4096 2935 0 2872 113 46 67 83 0 8 4 pvpl 32 643992 0 635317 129 11 118 118 0 265 10 pmappl 216 1463 0 1436 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 407 0 71 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff80002a7cd4e0,ffffffffffffffff,0,a0c7df9f,fffffd805e357b08,fffffd8007bfb8f0) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7cd4e0,ffffffffffffffff,0,a0c7df9f,fffffd805e357b08,fffffd8007bfb8f0) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd805e357b08,4,20c7df9f,0,ffff80002a7cd4e0) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd805e357b08,4,20c7df9f,0,ffff80002a7cd4e0) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7cd4e0,ffff80003c985910,ffff80003c985860) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c985910) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c985910) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x67c494ac3b0, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff80002a7cd4e0,ffffffffffffffff,0,a0c7df9f,fffffd805e357b08,fffffd8007bfb8f0) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7cd4e0,ffffffffffffffff,0,a0c7df9f,fffffd805e357b08,fffffd8007bfb8f0) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd805e357b08,4,20c7df9f,0,ffff80002a7cd4e0) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd805e357b08,4,20c7df9f,0,ffff80002a7cd4e0) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7cd4e0,ffff80003c985910,ffff80003c985860) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c985910) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c985910) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x67c494ac3b0, count: -5