uvm_fault(0xfffffd806c3dee20, 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 *475841 13813 0 0 0x4000000 0 syz-executor ktrops(ffff80002a776528,ffffffffffffffff,0,a0c7df9f,fffffd8067b95cc0,fffffd8007bfb680) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a776528,ffffffffffffffff,0,a0c7df9f,fffffd8067b95cc0,fffffd8007bfb680) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd8067b95cc0,4,20c7df9f,0,ffff80002a776528) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd8067b95cc0,4,20c7df9f,0,ffff80002a776528) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a776528,ffff80002a827d40,ffff80002a827c90) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80002a827d40) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a827d40) at syscall+0x97e sys/arch/amd64/amd64/trap.c:742 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfeda2908a20, 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(0xfffffd806c3dee20, 0xf, 0, 1) -> e ddb> trace ktrops(ffff80002a776528,ffffffffffffffff,0,a0c7df9f,fffffd8067b95cc0,fffffd8007bfb680) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a776528,ffffffffffffffff,0,a0c7df9f,fffffd8067b95cc0,fffffd8007bfb680) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd8067b95cc0,4,20c7df9f,0,ffff80002a776528) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd8067b95cc0,4,20c7df9f,0,ffff80002a776528) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a776528,ffff80002a827d40,ffff80002a827c90) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80002a827d40) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a827d40) at syscall+0x97e sys/arch/amd64/amd64/trap.c:742 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfeda2908a20, count: -5 ddb> show registers rdi 0xffff80002f0fc000 rsi 0x44a9 __ALIGN_SIZE+0x34a9 rbp 0xffff80002a827a60 rbx 0xfffffd8007bfb680 rdx 0xffff80002f0fc000 rcx 0x44a8 __ALIGN_SIZE+0x34a8 rax 0xffffffff825dc203 ktrops+0x43 r8 0xfffffd8067b95cc0 r9 0xfffffd8007bfb680 r10 0xac2032244e74b2a4 r11 0x3857fb836506f1 r12 0xffff80002a776528 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0xa0c7df9f rip 0xffffffff825dc218 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002a8279e0 ss 0x10 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=475841 pid=13813 tcnt=2 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=0xffff80002a840550,0xffffffff839a87a0 process=0xffff800035d14018 user=0xffff80002a822000, vmspace=0xfffffd806c3dee20 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 13813 364155 67445 0 3 0x80 fsleep syz-executor *13813 475841 67445 0 7 0x4000000 syz-executor 45107 233281 74163 0 3 0x80 fsleep syz-executor 45107 265101 74163 0 3 0x4000080 kqpoll syz-executor 64641 286880 14425 0 3 0x80 fsleep syz-executor 64641 70129 14425 0 3 0x4000080 kqread syz-executor 99493 118372 17809 0 3 0x80 fsleep syz-executor 99493 32972 17809 0 3 0x4000080 piperd syz-executor 49771 167426 23703 0 2 0 syz-executor 49771 149762 23703 0 2 0x4000000 syz-executor 31974 11540 54524 0 3 0x90 fsleep syz-executor 31974 208540 54524 0 3 0x4000090 kqread syz-executor 74163 513109 3560 0 2 0xc82 syz-executor 77699 350330 0 0 3 0x14200 acct acct 54524 516701 3560 0 3 0x82 nanoslp syz-executor 56000 196589 0 0 3 0x14280 nfsidl nfsio 36979 502916 0 0 3 0x14280 nfsidl nfsio 13186 521136 0 0 3 0x14280 nfsidl nfsio 47008 505563 0 0 3 0x14280 nfsidl nfsio 18489 60495 0 0 3 0x14280 nfsidl nfsio 11436 423920 0 0 3 0x14280 nfsidl nfsio 32351 305886 0 0 3 0x14280 nfsidl nfsio 16024 15711 0 0 3 0x14280 nfsidl nfsio 17762 176502 0 0 3 0x14280 nfsidl nfsio 13901 151669 0 0 3 0x14280 nfsidl nfsio 46944 419801 0 0 3 0x14280 nfsidl nfsio 87534 103096 0 0 3 0x14280 nfsidl nfsio 54852 49841 0 0 3 0x14280 nfsidl nfsio 62112 235629 0 0 3 0x14280 nfsidl nfsio 5009 240565 0 0 3 0x14280 nfsidl nfsio 47459 223281 0 0 3 0x14280 nfsidl nfsio 50799 77146 0 0 3 0x14280 nfsidl nfsio 31088 68131 0 0 3 0x14280 nfsidl nfsio 68108 520993 0 0 3 0x14280 nfsidl nfsio 60358 362895 0 0 3 0x14280 nfsidl nfsio 92449 447505 1 0 3 0x100083 ttyin getty 23703 153215 3560 0 2 0xc82 syz-executor 21709 154256 3560 0 3 0x82 wait syz-executor 70175 514194 0 0 3 0x14200 bored sosplice 73468 490252 3560 0 2 0x2 syz-executor 14425 18379 3560 0 2 0xc82 syz-executor 17809 468025 3560 0 3 0x82 nanoslp syz-executor 67445 187663 3560 0 2 0xc82 syz-executor 3560 101655 21909 0 2 0x2 syz-executor 21909 125429 88269 0 3 0x10008a sigsusp ksh 88269 253389 90806 0 3 0x98 kqread sshd-session 90806 159237 39917 0 3 0x92 kqread sshd-session 39917 339180 1 0 3 0x88 kqread sshd 365 489548 60630 73 3 0x1100090 kqread syslogd 60630 376578 1 0 3 0x100082 sbwait syslogd 24356 286499 1 0 3 0x100080 kqread resolvd 51227 27287 63971 77 3 0x100092 kqread dhcpleased 3294 275009 63971 77 3 0x100092 kqread dhcpleased 63971 476259 1 0 3 0x80 kqread dhcpleased 77283 159605 0 0 3 0x14200 bored smr 86899 406624 0 0 2 0x14200 zerothread 97255 232936 0 0 3 0x14200 aiodoned aiodoned 27512 460063 0 0 3 0x14200 syncer update 34348 268978 0 0 3 0x14200 cleaner cleaner 87402 470895 0 0 3 0x14200 reaper reaper 76609 338081 0 0 3 0x14200 pgdaemon pagedaemon 1458 252914 0 0 3 0x14200 bored viomb 76768 220155 0 0 3 0x40014200 acpi0 acpi0 45812 431683 0 0 3 0x14200 bored softnet3 67815 424737 0 0 3 0x14200 bored softnet2 45251 33865 0 0 3 0x14200 bored softnet1 37204 67946 0 0 2 0x14200 softnet0 29308 155146 0 0 3 0x14200 bored systqmp 96123 427865 0 0 3 0x14200 bored systq 20557 252610 0 0 2 0x40014200 softclock 81463 278501 0 0 3 0x40014200 idle0 1 355509 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 10191 11063K 11915K 166960K 13455 0 pcb 17 12K 20K 166960K 327 0 rtable 252 13K 13K 166960K 840 0 pf 35 14K 18K 166960K 196 0 ifaddr 43 8K 8K 166960K 125 0 ifgroup 53 2K 2K 166960K 191 0 sysctl 4 1K 9K 166960K 19 0 counters 32 17K 18K 166960K 108 0 ioctlops 0 0K 4K 166960K 308 0 iov 0 0K 32K 166960K 142 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1428 90K 91K 166960K 2806 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 36 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 152 0 dirhash 12 2K 2K 166960K 48 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 97K 166960K 1775 0 sigio 0 0K 0K 166960K 98 0 proc 60 59K 124K 166960K 797 0 subproc 72 4K 4K 166960K 117 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 151 0 in_multi 101 7K 7K 166960K 223 0 ether_multi 1 0K 0K 166960K 17 0 mrt 1 0K 0K 166960K 17 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 127 572K 572K 166960K 127 0 exec 0 0K 1K 166960K 1046 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 5 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 217 151K 167K 166960K 16741 0 UVM aobj 64 5K 5K 166960K 65 0 pinsyscall 38 76K 96K 166960K 2926 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 0K 166960K 81 0 NDP 11 0K 1K 166960K 85 0 temp 75 8687K 8812K 166960K 88999 0 kqueue 15 24K 35K 166960K 318 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 120 204 0 200 2 0 2 2 0 8 1 rtentry 136 280 0 174 4 0 4 4 0 8 0 unpcb 144 1338 0 1323 6 0 6 6 0 8 5 syncache 336 5 0 5 1 0 1 1 0 8 1 tcpqe 32 2 0 2 1 0 1 1 0 8 1 tcpcb 736 529 0 524 7 0 7 7 0 8 6 arp 88 33 0 12 1 0 1 1 0 8 0 ipq 40 3 0 2 1 0 1 1 0 8 0 ipqe 40 3 0 2 1 0 1 1 0 8 0 inpcb 328 1539 0 1530 7 0 7 7 0 8 5 ip6q 72 10 0 3 1 0 1 1 0 8 0 ip6af 40 13 0 6 1 0 1 1 0 8 0 nd6 104 44 0 17 1 0 1 1 0 8 0 pkpcb 40 10 0 10 1 0 1 1 0 8 1 kcovpl 48 13 0 5 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 0 1 1 0 8 1 ppxss 1072 60 0 60 1 0 1 1 0 8 1 pppxif 1384 6 0 6 1 0 1 1 0 8 1 pfstscr 40 4 0 4 1 0 1 1 0 8 1 pfosfp 40 2 0 1 1 0 1 1 0 8 0 pfosfpen 112 2 0 0 1 0 1 1 0 8 0 pfrktable 1344 3 0 2 1 0 1 1 0 8 0 pfanchor 1288 3 0 0 1 0 1 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfstkey 128 4 0 4 1 0 1 1 0 8 1 pfstate 384 2 0 2 1 0 1 1 0 8 1 pfrule 1344 3 0 1 1 0 1 1 0 8 0 rttmr 136 4 0 4 1 0 1 1 0 8 1 art_heap8 4096 6 0 0 6 0 6 6 0 8 0 art_heap4 256 1399 0 938 30 0 30 30 0 8 1 art_table 32 1405 0 938 4 0 4 4 0 8 0 art_node 16 270 0 176 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 7 1 0 1 1 0 8 0 semapl 112 150 0 140 1 0 1 1 0 8 0 shmpl 112 62 0 1 2 0 2 2 0 8 0 dirhash 1024 42 0 25 3 0 3 3 0 8 0 dino2pl 256 4473 0 2969 95 0 95 95 0 8 0 ffsino 248 4473 0 2969 95 0 95 95 0 8 0 nchpl 144 6906 0 5213 64 0 64 64 0 8 0 rtmask 32 12 0 12 1 0 1 1 0 8 1 uvmvnodes 80 5453 0 0 112 0 112 112 0 8 0 vnodes 216 5453 0 0 303 0 303 303 0 8 0 namei 1024 23883 0 23883 2 0 2 2 0 8 2 kstatmem 264 116 0 94 2 0 2 2 0 8 0 scsiplug 72 4 0 4 1 0 1 1 0 8 1 scxspl 216 30391 0 30391 8 0 8 8 1 8 8 plimitpl 152 500 0 482 1 0 1 1 0 8 0 sigapl 424 2068 0 2001 8 0 8 8 0 8 0 knotepl 120 73470 0 73420 21 10 11 16 0 8 8 kqueuepl 184 770 0 758 4 0 4 4 0 8 3 pipepl 296 359 0 331 8 0 8 8 0 8 5 fdescpl 440 2025 0 1996 5 0 5 5 0 8 1 filepl 120 13343 0 13126 13 0 13 13 0 8 5 lockfpl 104 937 0 933 2 0 2 2 0 8 1 lockfspl 48 400 0 396 1 0 1 1 0 8 0 sessionpl 144 28 0 20 1 0 1 1 0 8 0 pgrppl 48 75 0 59 1 0 1 1 0 8 0 ucredpl 104 1919 0 1906 1 0 1 1 0 8 0 zombiepl 144 2002 0 2001 1 0 1 1 0 8 0 processpl 1160 2068 0 2001 5 0 5 5 0 8 0 procpl 656 4476 0 4403 7 0 7 7 0 8 0 sosppl 168 11 0 11 1 0 1 1 0 8 1 sockpl 528 3194 0 3166 11 1 10 11 0 8 7 mcl64k 65536 45 0 45 1 0 1 1 0 8 1 mcl16k 16384 3 0 3 1 0 1 1 0 8 1 mcl12k 12288 1 0 1 1 0 1 1 0 8 1 mcl9k 9216 70 0 70 1 0 1 1 0 8 1 mcl8k 8192 93 0 91 1 0 1 1 0 8 0 mcl4k 4096 4572 0 4517 15 0 15 15 0 8 7 mcl2k 2048 2970 0 2892 19 1 18 19 0 8 7 mtagpl 96 117 0 24 3 0 3 3 0 8 0 mbufpl 256 28608 0 28352 22 0 22 22 0 8 1 bufpl 280 10523 0 4296 445 0 445 445 0 8 0 anonpl 24 273903 0 270698 45 0 45 45 0 187 17 amapchunkpl 152 57065 0 56616 34 0 34 34 0 158 13 amappl16 200 4903 0 4866 22 10 12 15 0 8 8 amappl15 192 21 0 21 1 0 1 1 0 8 1 amappl14 184 115 0 105 1 0 1 1 0 8 0 amappl13 176 13 0 13 1 0 1 1 0 8 1 amappl12 168 2714 0 2685 3 0 3 3 0 8 1 amappl11 160 48 0 37 1 0 1 1 0 8 0 amappl10 152 5 0 5 1 0 1 1 0 8 1 amappl9 144 240 0 240 1 0 1 1 0 8 1 amappl8 136 23 0 22 1 0 1 1 0 8 0 amappl7 128 105 0 94 1 0 1 1 0 8 0 amappl6 120 223 0 219 1 0 1 1 0 8 0 amappl5 112 149 0 142 1 0 1 1 0 8 0 amappl4 104 314 0 298 1 0 1 1 0 8 0 amappl3 96 11621 0 11518 4 0 4 4 0 8 0 amappl2 88 693 0 637 2 0 2 2 0 8 0 amappl1 80 15033 0 14491 14 0 14 14 0 8 0 amappl 88 15707 0 15553 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 7 0 7 1 0 1 1 0 8 1 dma128 128 255 0 255 1 0 1 1 0 8 1 dma64 64 7 0 7 1 0 1 1 0 8 1 dma32 32 9 0 9 1 0 1 1 0 8 1 dma16 16 20 0 19 1 0 1 1 0 8 0 aobjpl 72 64 0 1 2 0 2 2 0 8 0 uaddrrnd 24 2025 0 1996 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2025 0 1996 1 0 1 1 0 8 0 vmmpekpl 168 15562 0 15505 3 0 3 3 0 8 0 vmmpepl 168 127136 0 125280 94 0 94 94 0 357 9 vmsppl 360 2024 0 1996 4 0 4 4 0 8 1 rwobjpl 32 36647 0 30293 52 0 52 52 0 8 0 pdppl 4096 4056 0 3992 104 38 66 82 0 8 2 pvpl 32 829411 0 820417 115 0 115 115 0 265 30 pmappl 216 2024 0 1996 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 311 0 39 8 0 8 8 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff80002a776528,ffffffffffffffff,0,a0c7df9f,fffffd8067b95cc0,fffffd8007bfb680) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a776528,ffffffffffffffff,0,a0c7df9f,fffffd8067b95cc0,fffffd8007bfb680) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd8067b95cc0,4,20c7df9f,0,ffff80002a776528) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd8067b95cc0,4,20c7df9f,0,ffff80002a776528) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a776528,ffff80002a827d40,ffff80002a827c90) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80002a827d40) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a827d40) at syscall+0x97e sys/arch/amd64/amd64/trap.c:742 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfeda2908a20, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff80002a776528,ffffffffffffffff,0,a0c7df9f,fffffd8067b95cc0,fffffd8007bfb680) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a776528,ffffffffffffffff,0,a0c7df9f,fffffd8067b95cc0,fffffd8007bfb680) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd8067b95cc0,4,20c7df9f,0,ffff80002a776528) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd8067b95cc0,4,20c7df9f,0,ffff80002a776528) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a776528,ffff80002a827d40,ffff80002a827c90) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80002a827d40) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a827d40) at syscall+0x97e sys/arch/amd64/amd64/trap.c:742 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfeda2908a20, count: -5