uvm_fault(0xfffffd806bb485d8, 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 *333351 13873 0 0 0x4000000 0 syz-executor ktrops(ffff80002f100548,ffffffffffffffff,0,a0c7df9f,fffffd806a99b448,fffffd8007bfb478) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002f100548,ffffffffffffffff,0,a0c7df9f,fffffd806a99b448,fffffd8007bfb478) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806a99b448,4,20c7df9f,0,ffff80002f100548) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806a99b448,4,20c7df9f,0,ffff80002f100548) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002f100548,ffff80003b1370e0,ffff80003b137030) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003b1370e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003b1370e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3b324c8a1c0, 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(0xfffffd806bb485d8, 0xf, 0, 1) -> e ddb> trace ktrops(ffff80002f100548,ffffffffffffffff,0,a0c7df9f,fffffd806a99b448,fffffd8007bfb478) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002f100548,ffffffffffffffff,0,a0c7df9f,fffffd806a99b448,fffffd8007bfb478) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806a99b448,4,20c7df9f,0,ffff80002f100548) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806a99b448,4,20c7df9f,0,ffff80002f100548) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002f100548,ffff80003b1370e0,ffff80003b137030) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003b1370e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003b1370e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3b324c8a1c0, count: -5 ddb> show registers rdi 0xffff80002ccfa000 rsi 0x24ce __ALIGN_SIZE+0x14ce rbp 0xffff80003b136e00 rbx 0xfffffd8007bfb478 rdx 0xffff80002ccfa000 rcx 0x24cd __ALIGN_SIZE+0x14cd rax 0xffffffff81d771d3 ktrops+0x43 r8 0xfffffd806a99b448 r9 0xfffffd8007bfb478 r10 0x2328fb647dee5625 r11 0x992e8c66538d4c26 r12 0xffff80002f100548 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0xa0c7df9f rip 0xffffffff81d771e8 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003b136d80 ss 0 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=333351 pid=13873 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=85, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002f100fa8,0xffff80002f1007f0 process=0xffff8000ffff8d98 user=0xffff80003b132000, vmspace=0xfffffd806bb485d8 estcpu=35, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 4993 198898 93185 0 2 0 syz-executor 4993 152358 93185 0 2 0x4000000 syz-executor 65326 196068 51800 0 2 0 syz-executor 65326 117281 51800 0 2 0x4000000 syz-executor 74010 284885 61000 0 2 0 syz-executor 74010 428291 61000 0 2 0x4000000 syz-executor 13873 86403 82823 0 2 0 syz-executor *13873 333351 82823 0 7 0x4000000 syz-executor 55787 162308 76087 0 2 0 syz-executor 55787 24736 76087 0 3 0x4000080 fsleep syz-executor 10669 508699 1 0 3 0x100083 ttyin getty 30074 158483 18327 0 2 0x2 syz-executor 61000 407577 18327 0 2 0xc82 syz-executor 93185 356006 18327 0 2 0xc82 syz-executor 49303 228362 0 0 3 0x14200 bored sosplice 51800 438467 18327 0 3 0x82 nanoslp syz-executor 58468 88705 18327 0 3 0x82 piperd syz-executor 82823 78564 18327 0 2 0xc82 syz-executor 76087 406593 18327 0 2 0xc82 syz-executor 18327 283424 52593 0 3 0x82 nanoslp syz-executor 52593 30687 51816 0 3 0x10008a sigsusp ksh 51816 359566 67280 0 3 0x98 kqread sshd-session 67280 350691 57709 0 3 0x92 kqread sshd-session 57709 200494 1 0 3 0x88 kqread sshd 19390 477164 68726 73 3 0x1100090 kqread syslogd 68726 172824 1 0 3 0x100082 sbwait syslogd 81541 213749 1 0 3 0x100080 kqread resolvd 93504 301829 49030 77 3 0x100092 kqread dhcpleased 52003 519391 49030 77 3 0x100092 kqread dhcpleased 49030 367995 1 0 3 0x80 kqread dhcpleased 7566 93109 0 0 3 0x14200 bored smr 84130 189442 0 0 2 0x14200 zerothread 69091 137040 0 0 3 0x14200 aiodoned aiodoned 99067 111241 0 0 3 0x14200 syncer update 70253 218114 0 0 3 0x14200 cleaner cleaner 21204 112860 0 0 3 0x14200 reaper reaper 74051 101350 0 0 3 0x14200 pgdaemon pagedaemon 20062 412134 0 0 3 0x14200 bored viomb 71549 4668 0 0 3 0x40014200 acpi0 acpi0 24039 140251 0 0 3 0x14200 bored softnet0 3850 180123 0 0 3 0x14200 bored systqmp 84492 236065 0 0 3 0x14200 bored systq 42371 134332 0 0 3 0x40014200 tmoslp softclock 45299 373929 0 0 3 0x40014200 idle0 1 330043 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 10207 11128K 11238K 166960K 12631 0 pcb 17 16K 18K 166960K 927 0 rtable 204 10K 10K 166960K 720 0 pf 32 13K 77K 166960K 214 0 ifaddr 34 6K 8K 166960K 154 0 ifgroup 50 2K 2K 166960K 275 0 sysctl 4 1K 9K 166960K 19 0 counters 32 17K 18K 166960K 145 0 ioctlops 0 0K 4K 166960K 618 0 iov 0 0K 26K 166960K 321 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1366 86K 86K 166960K 2886 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 4 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 166 0 dirhash 12 2K 2K 166960K 54 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 14 49K 240K 166960K 2172 0 sigio 0 0K 0K 166960K 87 0 proc 61 59K 108K 166960K 825 0 subproc 63 3K 5K 166960K 228 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 557 0 in_multi 68 5K 7K 166960K 227 0 ether_multi 1 0K 0K 166960K 25 0 mrt 1 0K 0K 166960K 14 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 229 1023K 1023K 166960K 229 0 exec 0 0K 1K 166960K 724 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 4 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 189 144K 166K 166960K 19802 0 UVM aobj 120 7K 7K 166960K 125 0 pinsyscall 35 70K 95K 166960K 3312 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 136 0 NDP 11 0K 2K 166960K 113 0 temp 80 8647K 8904K 166960K 58775 0 kqueue 13 20K 33K 166960K 469 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 120 299 0 296 3 2 1 2 0 8 0 rtentry 136 206 0 135 4 0 4 4 0 8 0 unpcb 144 1926 0 1909 15 13 2 6 0 8 1 syncache 336 5 0 5 1 1 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 1162 0 1158 20 13 7 7 0 8 6 arp 96 24 0 15 1 0 1 1 0 8 0 ipq 40 5 0 3 2 1 1 1 0 8 0 ipqe 40 9 0 7 2 1 1 1 0 8 0 inpcb 328 3073 0 3062 26 19 7 12 0 8 4 ip6q 72 11 0 9 2 1 1 1 0 8 0 ip6af 40 24 0 22 2 1 1 1 0 8 0 nd6 112 42 0 25 1 0 1 1 0 8 0 pkpcb 40 16 0 16 4 3 1 1 0 8 1 kcovpl 48 25 0 18 1 0 1 1 0 8 0 mppekey 1024 2 0 2 2 2 0 1 0 8 0 ppxss 1072 86 0 86 4 3 1 1 0 8 1 pppxif 1384 10 0 10 4 3 1 1 0 8 1 pfrktable 1344 2 0 2 2 2 0 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 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 6 0 0 6 0 6 6 0 8 0 art_heap4 256 898 0 562 30 6 24 30 0 8 1 art_table 40 904 0 562 5 0 5 5 0 8 0 art_node 32 201 0 138 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 5 1 0 1 1 0 8 0 semapl 112 163 0 153 1 0 1 1 0 8 0 shmpl 112 122 0 5 5 1 4 4 0 8 0 dirhash 1024 47 0 30 3 0 3 3 0 8 0 dino2pl 256 5365 0 3850 95 0 95 95 0 8 0 ffsino 256 5367 0 3850 95 0 95 95 0 8 0 nchpl 144 8341 0 6633 64 0 64 64 0 8 0 rtmask 32 17 0 17 3 2 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 34871 0 34868 7 5 2 4 0 8 1 kstatmem 264 172 0 150 4 2 2 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 9 0 9 3 2 1 1 0 8 1 scxspl 216 31285 0 31285 23 15 8 8 1 8 8 plimitpl 152 585 0 570 1 0 1 1 0 8 0 sigapl 424 2396 0 2356 6 0 6 6 0 8 0 knotepl 120 97851 0 97804 56 45 11 17 0 8 8 kqueuepl 184 953 0 944 9 5 4 4 0 8 3 pipepl 304 539 0 512 12 7 5 8 0 8 2 fdescpl 448 2376 0 2350 5 1 4 5 0 8 0 filepl 120 21686 0 21491 27 15 12 17 0 8 3 lockfpl 104 1137 0 1135 4 3 1 4 0 8 0 lockfspl 48 273 0 271 1 0 1 1 0 8 0 sessionpl 144 37 0 29 1 0 1 1 0 8 0 pgrppl 48 156 0 141 1 0 1 1 0 8 0 ucredpl 104 4783 0 4772 1 0 1 1 0 8 0 zombiepl 144 2599 0 2599 1 0 1 1 0 8 1 processpl 1152 2396 0 2356 4 0 4 4 0 8 0 procpl 664 5407 0 5362 6 0 6 6 0 8 1 sosppl 168 10 0 10 4 3 1 1 0 8 1 sockpl 552 5395 0 5364 28 20 8 13 0 8 3 mcl64k 65536 191 0 191 3 2 1 1 0 8 1 mcl16k 16384 6 0 6 4 3 1 1 0 8 1 mcl12k 12288 3 0 3 1 0 1 1 0 8 1 mcl9k 9216 2 0 2 2 2 0 1 0 8 0 mcl8k 8192 83 0 83 3 3 0 1 0 8 0 mcl4k 4096 5146 0 5086 15 6 9 14 0 8 0 mcl2k2 2112 2 0 2 2 1 1 1 0 8 1 mcl2k 2048 3135 0 3132 8 6 2 5 0 8 1 mtagpl 96 5 0 5 1 1 0 1 0 8 0 mbufpl 256 26013 0 25889 47 34 13 43 0 8 0 bufpl 280 11414 0 5186 446 0 446 446 0 8 0 anonpl 24 338542 0 335556 104 44 60 60 0 187 24 amapchunkpl 152 69192 0 68821 50 23 27 32 0 158 7 amappl16 200 6051 0 6020 47 33 14 20 0 8 8 amappl15 192 7 0 7 2 2 0 1 0 8 0 amappl14 184 117 0 107 1 0 1 1 0 8 0 amappl13 176 59 0 59 1 1 0 1 0 8 0 amappl12 168 2898 0 2876 3 1 2 3 0 8 0 amappl11 160 46 0 36 1 0 1 1 0 8 0 amappl10 152 5 0 5 1 1 0 1 0 8 0 amappl9 144 255 0 253 1 0 1 1 0 8 0 amappl8 136 33 0 32 1 0 1 1 0 8 0 amappl7 128 110 0 99 1 0 1 1 0 8 0 amappl6 120 424 0 416 1 0 1 1 0 8 0 amappl5 112 135 0 128 1 0 1 1 0 8 0 amappl4 104 287 0 269 1 0 1 1 0 8 0 amappl3 96 12024 0 11950 3 0 3 3 0 8 0 amappl2 88 2634 0 2562 2 0 2 2 0 8 0 amappl1 80 17009 0 16473 14 1 13 14 0 8 0 amappl 88 18692 0 18566 5 0 5 5 0 92 0 dma16384 16384 5 0 5 2 1 1 1 0 8 1 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma512 512 1 0 1 1 1 0 1 0 8 0 dma256 256 7 0 7 2 1 1 1 0 8 1 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 9 0 9 3 3 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 124 0 5 3 0 3 3 0 8 0 uaddrrnd 24 2376 0 2350 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2376 0 2350 1 0 1 1 0 8 0 vmmpekpl 168 18817 0 18769 3 0 3 3 0 8 0 vmmpepl 168 148937 0 147201 116 16 100 100 0 357 10 vmsppl 368 2375 0 2350 4 1 3 4 0 8 0 rwobjpl 40 42588 0 35744 75 2 73 73 0 8 0 pdppl 4096 4759 0 4700 131 70 61 83 0 8 2 pvpl 32 998061 0 990117 198 61 137 137 0 265 32 pmappl 216 2375 0 2350 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 486 0 157 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff80002f100548,ffffffffffffffff,0,a0c7df9f,fffffd806a99b448,fffffd8007bfb478) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002f100548,ffffffffffffffff,0,a0c7df9f,fffffd806a99b448,fffffd8007bfb478) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806a99b448,4,20c7df9f,0,ffff80002f100548) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806a99b448,4,20c7df9f,0,ffff80002f100548) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002f100548,ffff80003b1370e0,ffff80003b137030) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003b1370e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003b1370e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3b324c8a1c0, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff80002f100548,ffffffffffffffff,0,a0c7df9f,fffffd806a99b448,fffffd8007bfb478) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002f100548,ffffffffffffffff,0,a0c7df9f,fffffd806a99b448,fffffd8007bfb478) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806a99b448,4,20c7df9f,0,ffff80002f100548) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806a99b448,4,20c7df9f,0,ffff80002f100548) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002f100548,ffff80003b1370e0,ffff80003b137030) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003b1370e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003b1370e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3b324c8a1c0, count: -5