uvm_fault(0xfffffd8076b66e68, 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 *395585 72395 0 0 0x4000000 0 syz-executor ktrops(ffff80003c98f9d0,ffffffffffffffff,0,a0c7df9f,fffffd806b2d1d08,fffffd8007bfb618) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c98f9d0,ffffffffffffffff,0,a0c7df9f,fffffd806b2d1d08,fffffd8007bfb618) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806b2d1d08,4,20c7df9f,0,ffff80003c98f9d0) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806b2d1d08,4,20c7df9f,0,ffff80003c98f9d0) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003c98f9d0,ffff80003ca2b790,ffff80003ca2b6e0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003ca2b790) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003ca2b790) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x47c59e54ca0, 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(0xfffffd8076b66e68, 0xf, 0, 1) -> e ddb> trace ktrops(ffff80003c98f9d0,ffffffffffffffff,0,a0c7df9f,fffffd806b2d1d08,fffffd8007bfb618) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c98f9d0,ffffffffffffffff,0,a0c7df9f,fffffd806b2d1d08,fffffd8007bfb618) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806b2d1d08,4,20c7df9f,0,ffff80003c98f9d0) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806b2d1d08,4,20c7df9f,0,ffff80003c98f9d0) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003c98f9d0,ffff80003ca2b790,ffff80003ca2b6e0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003ca2b790) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003ca2b790) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x47c59e54ca0, count: -5 ddb> show registers rdi 0xffff80003c98f9d0 rsi 0xffffffffffffffff rbp 0xffff80003ca2b4b0 rbx 0xfffffd8007bfb618 rdx 0 rcx 0xa0c7df9f rax 0xffff80003c98f9d0 r8 0xfffffd806b2d1d08 r9 0xfffffd8007bfb618 r10 0x9bbd2381cb6b352b r11 0xea448d102957ccf7 r12 0xffff80003c98f9d0 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0xa0c7df9f rip 0xffffffff82573728 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003ca2b430 ss 0x10 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=395585 pid=72395 tcnt=3 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=0xffff80003c98ea70,0xffff80003c98f4c0 process=0xffff80002a8f0490 user=0xffff80003ca26000, vmspace=0xfffffd8076b66e68 estcpu=31, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 78443 58328 95263 0 2 0 syz-executor 72395 20134 695 0 2 0 syz-executor 72395 247730 695 0 2 0x4000000 syz-executor *72395 395585 695 0 7 0x4000000 syz-executor 62972 225698 74544 0 2 0x4081000 syz-executor 62972 74129 74544 0 3 0x4003000 suspend syz-executor 59278 107759 11093 0 2 0x2 syz-executor 74544 113859 11093 0 3 0x82 wait syz-executor 79705 474565 0 0 3 0x14200 acct acct 30452 408915 0 0 3 0x14280 nfsidl nfsio 34900 243868 0 0 3 0x14280 nfsidl nfsio 89486 309336 0 0 3 0x14280 nfsidl nfsio 35322 355474 0 0 3 0x14280 nfsidl nfsio 76011 166876 0 0 3 0x14280 nfsidl nfsio 615 302877 0 0 3 0x14280 nfsidl nfsio 78550 198200 0 0 3 0x14280 nfsidl nfsio 54694 479737 0 0 3 0x14280 nfsidl nfsio 79514 146108 0 0 3 0x14280 nfsidl nfsio 30316 36839 0 0 3 0x14280 nfsidl nfsio 81038 419248 0 0 3 0x14280 nfsidl nfsio 14386 506803 0 0 3 0x14280 nfsidl nfsio 46272 81285 0 0 3 0x14280 nfsidl nfsio 30453 391464 0 0 3 0x14280 nfsidl nfsio 9976 270425 0 0 3 0x14280 nfsidl nfsio 81308 370176 0 0 3 0x14280 nfsidl nfsio 65201 179568 0 0 3 0x14280 nfsidl nfsio 35401 1222 0 0 3 0x14280 nfsidl nfsio 64856 155814 0 0 3 0x14280 nfsidl nfsio 96238 106244 0 0 3 0x14280 nfsidl nfsio 43213 49560 11093 0 3 0x2 biowait syz-executor 695 361290 11093 0 3 0x82 nanoslp syz-executor 42797 451009 1 0 3 0x100083 ttyin getty 7678 79891 0 0 3 0x14200 bored sosplice 19478 365061 11093 0 2 0x2 syz-executor 95263 41300 11093 0 3 0x82 nanoslp syz-executor 7477 246819 11093 0 2 0x2 syz-executor 49355 119388 11093 0 2 0x2 syz-executor 11093 369155 46624 0 3 0x82 kqread syz-executor 46624 36181 7919 0 3 0x10008a sigsusp ksh 7919 434001 21000 0 3 0x98 kqread sshd-session 21000 177554 16344 0 3 0x92 kqread sshd-session 16344 391808 1 0 3 0x88 kqread sshd 71181 514208 83222 73 3 0x1100090 kqread syslogd 83222 175250 1 0 3 0x100082 sbwait syslogd 81896 109556 1 0 3 0x100080 kqread resolvd 51954 395260 5931 77 3 0x100092 kqread dhcpleased 86411 367000 5931 77 3 0x100092 kqread dhcpleased 5931 507145 1 0 3 0x80 kqread dhcpleased 97073 445701 0 0 3 0x14200 bored smr 1861 301057 0 0 2 0x14200 zerothread 31173 156129 0 0 3 0x14200 aiodoned aiodoned 2681 350025 0 0 3 0x14200 syncer update 31360 292275 0 0 3 0x14200 cleaner cleaner 69854 56787 0 0 3 0x14200 reaper reaper 43913 455840 0 0 3 0x14200 pgdaemon pagedaemon 73960 378003 0 0 3 0x14200 bored viomb 36567 64148 0 0 3 0x40014200 acpi0 acpi0 3905 142326 0 0 3 0x14200 bored softnet7 49672 89460 0 0 3 0x14200 bored softnet6 23164 454702 0 0 3 0x14200 bored softnet5 23954 196947 0 0 3 0x14200 bored softnet4 2535 129786 0 0 3 0x14200 bored softnet3 22996 287180 0 0 3 0x14200 bored softnet2 68879 201063 0 0 3 0x14200 bored softnet1 3792 398534 0 0 3 0x14200 bored softnet0 5605 4062 0 0 3 0x14200 smrbar systqmp 71117 161205 0 0 3 0x14200 bored systq 13766 428236 0 0 3 0x40014200 tmoslp softclock 94880 400957 0 0 3 0x40014200 idle0 1 410096 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 10261 11151K 12256K 166960K 18078 0 pcb 17 17K 21K 166960K 1099 0 rtable 170 9K 11K 166960K 785 0 pf 40 15K 131085K 166960K 267 0 ifaddr 33 5K 9K 166960K 187 0 ifgroup 57 2K 3K 166960K 300 0 sysctl 4 1K 9K 166960K 53 0 counters 34 18K 18K 166960K 248 0 ioctlops 0 0K 4K 166960K 767 0 iov 0 0K 28K 166960K 297 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1517 95K 96K 166960K 4655 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 2K 9K 166960K 38 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 201 0 dirhash 12 2K 2K 166960K 39 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 13 45K 240K 166960K 2784 0 sigio 0 0K 0K 166960K 101 0 proc 60 59K 116K 166960K 857 0 subproc 72 4K 4K 166960K 126 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 596 0 in_multi 55 4K 7K 166960K 278 0 ether_multi 1 0K 0K 166960K 24 0 mrt 2 0K 0K 166960K 11 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 271 1208K 1208K 166960K 271 0 exec 0 0K 1K 166960K 813 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 8 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 191 144K 162K 166960K 25324 0 UVM aobj 101 6K 6K 166960K 111 0 pinsyscall 34 68K 96K 166960K 3907 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 216 0 NDP 13 0K 2K 166960K 120 0 temp 80 8676K 8804K 166960K 91419 0 kqueue 14 22K 35K 166960K 555 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 120 321 0 318 3 2 1 3 0 8 0 rtentry 136 243 0 192 4 0 4 4 0 8 0 unpcb 144 2414 0 2399 18 12 6 6 0 8 5 syncache 336 8 0 8 3 3 0 1 0 8 0 tcpqe 32 2 0 2 1 1 0 1 0 8 0 tcpcb 736 1105 0 1101 27 23 4 7 0 8 3 arp 88 33 0 24 1 0 1 1 0 8 0 ipq 40 4 0 3 2 1 1 1 0 8 0 ipqe 40 6 0 5 2 1 1 1 0 8 0 inpcb 328 3529 0 3522 41 32 9 12 0 8 8 ip6q 72 9 0 9 1 0 1 1 0 8 1 ip6af 40 10 0 10 1 0 1 1 0 8 1 nd6 104 43 0 33 1 0 1 1 0 8 0 pkpcb 40 101 0 101 6 5 1 1 0 8 1 kcovpl 48 14 0 6 1 0 1 1 0 8 0 mppekey 1024 35 0 35 3 2 1 1 0 8 1 ppxss 1072 181 0 180 2 1 1 1 0 8 0 pppxif 1384 114 0 114 6 5 1 1 0 8 1 pfstscr 40 35 0 33 1 0 1 1 0 8 0 pfosfp 40 3 0 1 1 0 1 1 0 8 0 pfosfpen 112 3 0 1 1 0 1 1 0 8 0 pfrktable 1344 2 0 2 2 2 0 1 0 8 0 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pftag 88 4 0 1 1 0 1 1 0 8 0 pfstitem 24 9 0 1 1 0 1 1 0 8 0 pfstkey 128 78 0 71 1 0 1 1 0 8 0 pfstate 384 39 0 35 1 0 1 1 0 8 0 pfrule 1344 17 0 17 5 5 0 1 0 8 0 rttmr 136 2 0 2 2 2 0 1 0 8 0 art_heap8 4096 5 0 0 5 0 5 5 0 8 0 art_heap4 256 1099 0 826 36 10 26 30 0 8 6 art_table 40 1104 0 826 5 0 5 5 0 8 0 art_node 32 237 0 186 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 189 0 179 1 0 1 1 0 8 0 shmpl 112 108 0 10 3 0 3 3 0 8 0 dirhash 1024 35 0 18 3 0 3 3 0 8 0 dino2pl 256 6640 0 5133 95 0 95 95 0 8 0 ffsino 256 6640 0 5133 95 0 95 95 0 8 0 nchpl 144 10403 0 9882 63 41 22 63 0 8 0 rtmask 32 11 0 11 5 4 1 1 0 8 1 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 38038 0 38035 11 9 2 2 0 8 1 kstatmem 264 180 0 154 3 0 3 3 0 8 0 scsiplug 72 15 0 15 7 6 1 1 0 8 1 scxspl 216 31254 0 31253 11 9 2 8 1 8 1 plimitpl 152 990 0 974 1 0 1 1 0 8 0 sigapl 424 3075 0 3008 12 3 9 9 0 8 0 knotepl 120 322939 0 322891 106 94 12 24 0 8 8 kqueuepl 184 1188 0 1178 13 12 1 4 0 8 0 pipepl 304 318 0 290 3 0 3 3 0 8 0 fdescpl 448 2989 0 2964 5 1 4 5 0 8 0 filepl 120 22557 0 22315 22 10 12 12 0 8 2 lockfpl 104 2063 0 2060 2 1 1 2 0 8 0 lockfspl 48 876 0 873 1 0 1 1 0 8 0 sessionpl 144 28 0 20 1 0 1 1 0 8 0 pgrppl 48 74 0 58 1 0 1 1 0 8 0 ucredpl 104 3957 0 3946 1 0 1 1 0 8 0 zombiepl 144 3351 0 3350 3 2 1 1 0 8 0 processpl 1168 3075 0 3008 8 2 6 6 0 8 0 procpl 656 6946 0 6875 11 3 8 8 0 8 0 sosppl 168 16 0 16 6 5 1 1 0 8 1 sockpl 552 6517 0 6492 49 39 10 15 0 8 8 mcl64k 65536 233 0 233 8 7 1 1 0 8 1 mcl16k 16384 15 0 15 5 4 1 1 0 8 1 mcl12k 12288 3 0 3 3 3 0 1 0 8 0 mcl9k 9216 9 0 9 3 2 1 1 0 8 1 mcl8k 8192 33 0 33 8 7 1 1 0 8 1 mcl4k 4096 6053 0 6002 17 9 8 13 0 8 1 mcl2k2 2112 1 0 1 1 0 1 1 0 8 1 mcl2k 2048 3867 0 3863 11 6 5 5 0 8 4 mtagpl 96 125 0 96 3 0 3 3 0 8 0 mbufpl 256 33589 0 33469 102 84 18 74 0 8 3 bufpl 280 8475 0 2248 445 0 445 445 0 8 0 anonpl 24 381647 0 374529 157 86 71 71 0 187 3 amapchunkpl 152 87149 0 86734 74 39 35 35 0 158 11 amappl16 200 6672 0 6454 53 28 25 25 0 8 2 amappl15 192 10 0 10 1 1 0 1 0 8 0 amappl14 184 114 0 104 1 0 1 1 0 8 0 amappl13 176 4 0 4 1 1 0 1 0 8 0 amappl12 168 3678 0 3654 3 1 2 3 0 8 0 amappl11 160 42 0 32 1 0 1 1 0 8 0 amappl10 152 5 0 5 2 2 0 1 0 8 0 amappl9 144 245 0 245 1 1 0 1 0 8 0 amappl8 136 24 0 22 1 0 1 1 0 8 0 amappl7 128 118 0 107 1 0 1 1 0 8 0 amappl6 120 229 0 224 1 0 1 1 0 8 0 amappl5 112 157 0 150 1 0 1 1 0 8 0 amappl4 104 269 0 253 1 0 1 1 0 8 0 amappl3 96 18204 0 18128 4 0 4 4 0 8 0 amappl2 88 702 0 644 2 0 2 2 0 8 0 amappl1 80 18975 0 18444 13 1 12 13 0 8 0 amappl 88 24147 0 24020 6 1 5 5 0 92 0 dma32768 32768 2 0 2 2 2 0 1 0 8 0 dma4096 4096 2 0 2 2 2 0 1 0 8 0 dma2048 2048 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma512 512 1 0 1 1 1 0 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 258 0 258 4 4 0 1 0 8 0 dma64 64 8 0 8 2 2 0 1 0 8 0 dma32 32 9 0 9 3 3 0 1 0 8 0 dma16 16 21 0 20 1 0 1 1 0 8 0 aobjpl 72 110 0 10 2 0 2 2 0 8 0 uaddrrnd 24 2989 0 2964 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2989 0 2964 1 0 1 1 0 8 0 vmmpekpl 168 21398 0 21354 4 1 3 3 0 8 0 vmmpepl 168 183928 0 182087 126 21 105 105 0 357 4 vmsppl 368 2988 0 2964 4 1 3 4 0 8 0 rwobjpl 40 48894 0 41862 76 1 75 75 0 8 0 pdppl 4096 5984 0 5928 146 82 64 82 0 8 8 pvpl 32 1213482 0 1201941 280 129 151 151 0 265 15 pmappl 216 2988 0 2964 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 600 0 257 12 0 12 12 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff80003c98f9d0,ffffffffffffffff,0,a0c7df9f,fffffd806b2d1d08,fffffd8007bfb618) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c98f9d0,ffffffffffffffff,0,a0c7df9f,fffffd806b2d1d08,fffffd8007bfb618) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806b2d1d08,4,20c7df9f,0,ffff80003c98f9d0) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806b2d1d08,4,20c7df9f,0,ffff80003c98f9d0) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003c98f9d0,ffff80003ca2b790,ffff80003ca2b6e0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003ca2b790) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003ca2b790) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x47c59e54ca0, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff80003c98f9d0,ffffffffffffffff,0,a0c7df9f,fffffd806b2d1d08,fffffd8007bfb618) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c98f9d0,ffffffffffffffff,0,a0c7df9f,fffffd806b2d1d08,fffffd8007bfb618) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806b2d1d08,4,20c7df9f,0,ffff80003c98f9d0) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806b2d1d08,4,20c7df9f,0,ffff80003c98f9d0) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003c98f9d0,ffff80003ca2b790,ffff80003ca2b6e0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003ca2b790) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003ca2b790) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x47c59e54ca0, count: -5