uvm_fault(0xfffffd806c9afe70, 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 *462872 25081 0 0 0x4000000 0 syz-executor ktrops(ffff80002a8c74f8,ffffffffffffffff,0,a0c7df9f,fffffd8069e632a0,fffffd8007bfd4e0) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a8c74f8,ffffffffffffffff,0,a0c7df9f,fffffd8069e632a0,fffffd8007bfd4e0) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd8069e632a0,4,20c7df9f,0,ffff80002a8c74f8) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd8069e632a0,4,20c7df9f,0,ffff80002a8c74f8) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a8c74f8,ffff80003c9f1870,ffff80003c9f17c0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c9f1870) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9f1870) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfad985ae260, 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(0xfffffd806c9afe70, 0xf, 0, 1) -> e ddb> trace ktrops(ffff80002a8c74f8,ffffffffffffffff,0,a0c7df9f,fffffd8069e632a0,fffffd8007bfd4e0) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a8c74f8,ffffffffffffffff,0,a0c7df9f,fffffd8069e632a0,fffffd8007bfd4e0) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd8069e632a0,4,20c7df9f,0,ffff80002a8c74f8) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd8069e632a0,4,20c7df9f,0,ffff80002a8c74f8) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a8c74f8,ffff80003c9f1870,ffff80003c9f17c0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c9f1870) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9f1870) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfad985ae260, count: -5 ddb> show registers rdi 0xffff80002a8e6000 rsi 0xc2d rbp 0xffff80003c9f1590 rbx 0xfffffd8007bfd4e0 rdx 0xffff80002a8e6000 rcx 0xc2c rax 0xffffffff8274a3c3 ktrops+0x43 r8 0xfffffd8069e632a0 r9 0xfffffd8007bfd4e0 r10 0x907e38c55a66b1a5 r11 0x63b37175b5c2174b r12 0xffff80002a8c74f8 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0xa0c7df9f rip 0xffffffff8274a3d8 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c9f1510 ss 0 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=462872 pid=25081 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=0xffff80002a7bcfa8,0xffff80002a8c6d40 process=0xffff80003c954020 user=0xffff80003c9ec000, vmspace=0xfffffd806c9afe70 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 6747 206885 2315 0 2 0 syz-executor 6747 151319 2315 0 3 0x4000080 fsleep syz-executor 6747 159282 2315 0 2 0x4000000 syz-executor 28042 463364 27835 0 2 0 syz-executor 28042 302770 27835 0 3 0x4000080 fsleep syz-executor 15508 495619 95222 0 2 0 syz-executor 15508 259715 95222 0 3 0x4000080 fsleep syz-executor 37553 68710 59111 0 2 0 syz-executor 37553 307754 59111 0 3 0x4000080 fsleep syz-executor 25081 422639 7445 0 2 0 syz-executor *25081 462872 7445 0 7 0x4000000 syz-executor 25081 56953 7445 0 3 0x4000080 fsleep syz-executor 33886 291486 35744 0 2 0 syz-executor 33886 211357 35744 0 3 0x4000080 msgwait syz-executor 33886 376690 35744 0 3 0x4000080 fsleep syz-executor 32658 89623 44227 0 2 0 syz-executor 32658 461449 44227 0 3 0x4000080 sbwait syz-executor 32658 27879 44227 0 3 0x4000000 sbufrcv syz-executor 32658 177367 44227 0 3 0x4000080 sbufrcv syz-executor 32658 449621 44227 0 3 0x4000000 sbufrcv syz-executor 32658 41384 44227 0 2 0x4000000 syz-executor 11983 496801 0 0 3 0x14280 nfsidl nfsio 94870 54576 0 0 3 0x14280 nfsidl nfsio 6070 166040 0 0 3 0x14280 nfsidl nfsio 85885 454520 0 0 3 0x14280 nfsidl nfsio 10088 211355 0 0 3 0x14280 nfsidl nfsio 20149 8252 0 0 3 0x14280 nfsidl nfsio 99225 52312 0 0 3 0x14280 nfsidl nfsio 45700 286258 0 0 3 0x14280 nfsidl nfsio 41107 498277 0 0 3 0x14280 nfsidl nfsio 47965 30597 0 0 3 0x14280 nfsidl nfsio 87108 398167 0 0 3 0x14280 nfsidl nfsio 97923 113485 0 0 3 0x14280 nfsidl nfsio 40143 486937 0 0 3 0x14280 nfsidl nfsio 19283 177640 0 0 3 0x14280 nfsidl nfsio 34104 108626 0 0 3 0x14280 nfsidl nfsio 96752 116426 0 0 3 0x14280 nfsidl nfsio 43630 109873 0 0 3 0x14280 nfsidl nfsio 88726 172052 0 0 3 0x14280 nfsidl nfsio 66473 39435 0 0 3 0x14280 nfsidl nfsio 52722 109189 0 0 3 0x14280 nfsidl nfsio 59111 377088 93151 0 3 0x82 nanoslp syz-executor 2315 504122 93151 0 3 0x82 nanoslp syz-executor 27835 38570 93151 0 3 0x82 nanoslp syz-executor 95222 110073 93151 0 3 0x82 nanoslp syz-executor 35872 193998 93151 0 3 0x82 nanoslp syz-executor 44227 44101 93151 0 3 0x82 nanoslp syz-executor 35744 427258 93151 0 3 0x82 nanoslp syz-executor 7445 130674 93151 0 3 0x82 nanoslp syz-executor 93151 133289 75966 0 3 0x82 kqread syz-executor 75966 185283 81276 0 3 0x10008a sigsusp ksh 81276 297034 24545 0 3 0x98 kqread sshd-session 24545 214232 80824 0 3 0x92 kqread sshd-session 41736 469481 1 0 3 0x100083 ttyin getty 80824 413324 1 0 3 0x88 kqread sshd 51654 460634 25151 73 3 0x1100090 kqread syslogd 25151 166930 1 0 3 0x100082 sbwait syslogd 3194 271544 1 0 3 0x100080 kqread resolvd 60510 228756 71897 77 3 0x100092 kqread dhcpleased 45301 425641 71897 77 3 0x100092 kqread dhcpleased 71897 175242 1 0 3 0x80 kqread dhcpleased 5614 455574 0 0 3 0x14200 bored smr 83242 418195 0 0 2 0x14200 zerothread 52024 394062 0 0 3 0x14200 aiodoned aiodoned 67874 21928 0 0 3 0x14200 syncer update 52592 280045 0 0 3 0x14200 cleaner cleaner 55024 5368 0 0 3 0x14200 reaper reaper 32375 111270 0 0 3 0x14200 pgdaemon pagedaemon 56104 13998 0 0 3 0x14200 bored viomb 86100 94435 0 0 3 0x40014200 acpi0 acpi0 51891 90274 0 0 3 0x14200 bored softnet0 29790 45889 0 0 3 0x14200 bored systqmp 11255 428964 0 0 3 0x14200 bored systq 23475 246272 0 0 3 0x40014200 tmoslp softclock 62456 66789 0 0 3 0x40014200 idle0 1 83229 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 11035 12112K 13180K 166960K 13439 0 pcb 18 14K 15K 166960K 120 0 rtable 225 9K 10K 166960K 468 0 pf 32 13K 15K 166960K 87 0 ifaddr 41 7K 8K 166960K 79 0 ifgroup 50 2K 2K 166960K 109 0 sysctl 4 1K 9K 166960K 14 0 counters 33 17K 18K 166960K 67 0 ioctlops 0 0K 4K 166960K 133 0 iov 1 4K 16K 166960K 32 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1470 92K 93K 166960K 2117 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 12 32K 32K 166960K 29 0 dirhash 12 2K 2K 166960K 27 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 97K 166960K 597 0 sigio 0 0K 0K 166960K 11 0 proc 63 67K 124K 166960K 553 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 68 0 in_multi 97 7K 7K 166960K 130 0 ether_multi 1 0K 0K 166960K 7 0 mrt 1 0K 0K 166960K 8 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 73 334K 334K 166960K 73 0 exec 0 0K 1K 166960K 493 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 237 151K 165K 166960K 7417 0 UVM aobj 16 3K 3K 166960K 19 0 pinsyscall 39 78K 96K 166960K 1696 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 18 0 NDP 11 0K 2K 166960K 53 0 temp 50 8669K 8742K 166960K 37930 0 kqueue 13 20K 30K 166960K 120 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 74 0 71 1 0 1 1 0 8 0 rtentry 136 141 0 47 4 0 4 4 0 8 0 unpcb 144 380 0 363 6 0 6 6 0 8 5 syncache 336 4 0 4 2 1 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 736 226 0 188 8 1 7 7 0 8 3 arp 96 25 0 9 1 0 1 1 0 8 0 ipq 40 3 0 0 1 0 1 1 0 8 0 ipqe 40 4 0 1 1 0 1 1 0 8 0 inpcb 328 648 0 605 7 0 7 7 0 8 3 nd6 112 29 0 3 1 0 1 1 0 8 0 pkpcb 40 5 0 5 1 0 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1072 29 0 29 2 1 1 1 0 8 1 pppxif 1384 3 0 3 2 1 1 1 0 8 1 pfstscr 40 1 0 1 1 0 1 1 0 8 1 pfsrclim 320 1 0 1 1 0 1 1 0 8 1 pftag 88 1 0 0 1 0 1 1 0 8 0 pfqueue 320 2 0 1 1 0 1 1 0 8 0 pfstitem 24 1 0 0 1 0 1 1 0 8 0 pfstkey 128 4 0 3 1 0 1 1 0 8 0 pfstate 384 3 0 2 1 0 1 1 0 8 0 pfrule 1360 3 0 3 2 1 1 1 0 8 1 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 556 0 115 31 0 31 31 0 8 1 art_table 40 558 0 115 5 0 5 5 0 8 0 art_node 32 141 0 59 1 0 1 1 0 8 0 sysvmsgpl 40 5 0 2 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 23 0 13 1 0 1 1 0 8 0 shmpl 112 16 0 3 1 0 1 1 0 8 0 dirhash 1024 28 0 11 3 0 3 3 0 8 0 dino2pl 256 2548 0 1046 95 0 95 95 0 8 0 ffsino 256 2548 0 1046 95 0 95 95 0 8 0 nchpl 144 3364 0 1668 64 0 64 64 0 8 0 rtmask 32 4 0 4 1 0 1 1 0 8 1 vnodes 216 3105 0 0 173 0 173 173 0 8 0 namei 1024 11143 0 11143 3 2 1 2 0 8 1 kstatmem 264 68 0 46 3 0 3 3 0 8 1 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 5 0 5 2 1 1 1 0 8 1 scxspl 216 10437 0 10437 8 7 1 8 1 8 1 plimitpl 152 232 0 215 1 0 1 1 0 8 0 sigapl 424 904 0 841 9 1 8 8 0 8 0 knotepl 120 24171 0 24124 32 20 12 17 0 8 8 kqueuepl 184 236 0 227 4 0 4 4 0 8 3 pipepl 304 149 0 122 3 0 3 3 0 8 0 fdescpl 448 869 0 839 5 1 4 5 0 8 0 filepl 120 5108 0 4861 15 0 15 15 0 8 6 lockfpl 104 352 0 349 2 0 2 2 0 8 1 lockfspl 48 159 0 156 1 0 1 1 0 8 0 sessionpl 144 23 0 15 1 0 1 1 0 8 0 pgrppl 48 70 0 54 1 0 1 1 0 8 0 ucredpl 104 821 0 810 1 0 1 1 0 8 0 zombiepl 144 1238 0 1237 1 0 1 1 0 8 0 processpl 1152 904 0 841 5 0 5 5 0 8 0 procpl 664 1804 0 1727 8 1 7 7 0 8 0 sosppl 176 3 0 3 2 1 1 1 0 8 1 sockpl 552 1185 0 1122 12 1 11 12 0 8 6 mcl64k 65536 20 0 18 2 1 1 1 0 8 0 mcl8k 8192 11 0 11 2 1 1 1 0 8 1 mcl4k 4096 3066 0 3014 14 6 8 13 0 8 1 mcl2k 2048 785 0 781 9 0 9 9 0 8 8 mtagpl 96 26 0 7 1 0 1 1 0 8 0 mbufpl 256 10471 0 10257 30 8 22 29 0 8 6 bufpl 280 3349 0 120 231 0 231 231 0 8 0 anonpl 24 143031 0 139810 45 2 43 43 0 187 17 amapchunkpl 152 23433 0 22926 29 0 29 29 0 158 8 amappl16 200 2455 0 2422 18 6 12 15 0 8 8 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 8 0 8 1 1 0 1 0 8 0 amappl13 176 414 0 413 1 0 1 1 0 8 0 amappl12 168 1216 0 1177 2 0 2 2 0 8 0 amappl11 160 38 0 38 1 1 0 1 0 8 0 amappl10 152 43 0 32 1 0 1 1 0 8 0 amappl9 144 250 0 250 1 1 0 1 0 8 0 amappl8 136 20 0 19 1 0 1 1 0 8 0 amappl7 128 84 0 83 1 0 1 1 0 8 0 amappl6 120 280 0 268 1 0 1 1 0 8 0 amappl5 112 77 0 69 1 0 1 1 0 8 0 amappl4 104 385 0 363 1 0 1 1 0 8 0 amappl3 96 4101 0 4006 3 0 3 3 0 8 0 amappl2 88 983 0 910 2 0 2 2 0 8 0 amappl1 80 10997 0 10456 14 1 13 13 0 8 0 amappl 88 6632 0 6462 5 0 5 5 0 92 0 uvmvnodes 80 106 0 0 3 0 3 3 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 128 254 0 254 2 1 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 18 0 3 1 0 1 1 0 8 0 uaddrrnd 24 869 0 839 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 869 0 839 1 0 1 1 0 8 0 vmmpekpl 168 8790 0 8753 3 0 3 3 0 8 0 vmmpepl 168 61865 0 60017 85 0 85 85 0 357 4 vmsppl 368 868 0 839 4 1 3 4 0 8 0 rwobjpl 40 19213 0 18233 12 0 12 12 0 8 1 pdppl 4096 1745 0 1678 101 34 67 83 0 8 0 pvpl 32 384210 0 375344 109 4 105 105 0 265 22 pmappl 216 868 0 839 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 411 0 59 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff80002a8c74f8,ffffffffffffffff,0,a0c7df9f,fffffd8069e632a0,fffffd8007bfd4e0) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a8c74f8,ffffffffffffffff,0,a0c7df9f,fffffd8069e632a0,fffffd8007bfd4e0) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd8069e632a0,4,20c7df9f,0,ffff80002a8c74f8) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd8069e632a0,4,20c7df9f,0,ffff80002a8c74f8) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a8c74f8,ffff80003c9f1870,ffff80003c9f17c0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c9f1870) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9f1870) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfad985ae260, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff80002a8c74f8,ffffffffffffffff,0,a0c7df9f,fffffd8069e632a0,fffffd8007bfd4e0) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a8c74f8,ffffffffffffffff,0,a0c7df9f,fffffd8069e632a0,fffffd8007bfd4e0) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd8069e632a0,4,20c7df9f,0,ffff80002a8c74f8) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd8069e632a0,4,20c7df9f,0,ffff80002a8c74f8) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a8c74f8,ffff80003c9f1870,ffff80003c9f17c0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c9f1870) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9f1870) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfad985ae260, count: -5