uvm_fault(0xfffffd806ce6dd08, 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 *389323 59835 0 0 0x4000000 0 syz-executor ktrops(ffff80003c97aa98,ffffffffffffffff,0,c0000d06,fffffd806c3f9518,fffffd8007bfb888) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c97aa98,ffffffffffffffff,0,c0000d06,fffffd806c3f9518,fffffd8007bfb888) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806c3f9518,4,40000d06,0,ffff80003c97aa98) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806c3f9518,4,40000d06,0,ffff80003c97aa98) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003c97aa98,ffff80003c984f60,ffff80003c984eb0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c984f60) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c984f60) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x69481a81760, 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(0xfffffd806ce6dd08, 0xf, 0, 1) -> e ddb> trace ktrops(ffff80003c97aa98,ffffffffffffffff,0,c0000d06,fffffd806c3f9518,fffffd8007bfb888) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c97aa98,ffffffffffffffff,0,c0000d06,fffffd806c3f9518,fffffd8007bfb888) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806c3f9518,4,40000d06,0,ffff80003c97aa98) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806c3f9518,4,40000d06,0,ffff80003c97aa98) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003c97aa98,ffff80003c984f60,ffff80003c984eb0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c984f60) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c984f60) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x69481a81760, count: -5 ddb> show registers rdi 0xffff80003153e000 rsi 0xbf4 rbp 0xffff80003c984c80 rbx 0xfffffd8007bfb888 rdx 0xffff80003153e000 rcx 0xbf3 rax 0xffffffff82b28d73 ktrops+0x43 r8 0xfffffd806c3f9518 r9 0xfffffd8007bfb888 r10 0xb20142ee2cb13d57 r11 0x3a1b0307a95343c2 r12 0xffff80003c97aa98 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0xc0000d06 rip 0xffffffff82b28d88 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c984c00 ss 0x10 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=389323 pid=59835 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=0xffff80003c97ba28,0xffff80003c97b508 process=0xffff80003c99e000 user=0xffff80003c980000, vmspace=0xfffffd806ce6dd08 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 3059 176568 11431 0 2 0 syz-executor 3059 26729 11431 0 3 0x4000080 ttyout syz-executor 3059 55041 11431 0 2 0x4000000 syz-executor 78580 465361 28383 0 2 0 syz-executor 78580 59478 28383 0 3 0x4000080 kqsel syz-executor 78580 2640 28383 0 3 0x4000080 fsleep syz-executor 51646 260035 39525 0 2 0 syz-executor 51646 342181 39525 0 3 0x4000080 fsleep syz-executor 59835 275236 24527 0 2 0 syz-executor *59835 389323 24527 0 7 0x4000000 syz-executor 24101 223321 4325 60928 2 0x10 syz-executor 24101 285701 4325 60928 3 0x4000090 fsleep syz-executor 24101 100630 4325 60928 3 0x4000090 fsleep syz-executor 24101 522534 4325 60928 3 0x4000090 fsleep syz-executor 29390 39833 28402 0 3 0x80 nanoslp syz-executor 29390 392632 28402 0 3 0x4000080 kqsel syz-executor 29390 241543 28402 0 3 0x4000080 kqsel syz-executor 29390 99710 28402 0 3 0x4000080 fsleep syz-executor 46847 27465 0 0 3 0x14280 nfsidl nfsio 94142 387769 0 0 3 0x14280 nfsidl nfsio 39150 322940 0 0 3 0x14280 nfsidl nfsio 37639 275007 0 0 3 0x14280 nfsidl nfsio 56325 204566 0 0 3 0x14280 nfsidl nfsio 88257 72423 0 0 3 0x14280 nfsidl nfsio 77340 30015 0 0 3 0x14280 nfsidl nfsio 16874 244959 0 0 3 0x14280 nfsidl nfsio 76005 44963 0 0 3 0x14280 nfsidl nfsio 20856 248428 0 0 3 0x14280 nfsidl nfsio 36244 56524 0 0 3 0x14280 nfsidl nfsio 72226 46789 0 0 3 0x14280 nfsidl nfsio 41556 284582 0 0 3 0x14280 nfsidl nfsio 83668 213845 0 0 3 0x14280 nfsidl nfsio 69849 384652 0 0 3 0x14280 nfsidl nfsio 82913 238872 0 0 3 0x14280 nfsidl nfsio 62979 78018 0 0 3 0x14280 nfsidl nfsio 86399 363104 0 0 3 0x14280 nfsidl nfsio 8247 110123 0 0 3 0x14280 nfsidl nfsio 67923 130943 0 0 3 0x14280 nfsidl nfsio 17059 67549 0 0 3 0x14200 bored sosplice 1210 110917 80397 0 2 0x2 syz-executor 39525 431241 80397 0 3 0x82 nanoslp syz-executor 28383 121794 80397 0 3 0x82 nanoslp syz-executor 28402 332691 80397 0 2 0xc82 syz-executor 24527 346446 80397 0 2 0xc82 syz-executor 88304 359303 80397 0 2 0xc82 syz-executor 4325 269239 80397 0 2 0xc82 syz-executor 11431 331680 80397 0 3 0x82 nanoslp syz-executor 80397 102192 23113 0 3 0x82 kqread syz-executor 23113 400237 68557 0 3 0x10008a sigsusp ksh 68557 365202 96251 0 3 0x98 kqread sshd-session 96251 340730 54608 0 3 0x92 kqread sshd-session 57955 415481 1 0 3 0x100083 ttyin getty 54608 224517 1 0 3 0x88 kqread sshd 75467 11744 44216 73 3 0x1100090 kqread syslogd 44216 518794 1 0 3 0x100082 sbwait syslogd 2515 172047 1 0 3 0x100080 kqread resolvd 19625 149287 6317 77 3 0x100092 kqread dhcpleased 53080 216455 6317 77 3 0x100092 kqread dhcpleased 6317 398016 1 0 3 0x80 kqread dhcpleased 85055 222432 0 0 3 0x14200 bored smr 60858 243596 0 0 2 0x14200 zerothread 48749 256538 0 0 3 0x14200 aiodoned aiodoned 21509 475411 0 0 3 0x14200 syncer update 38408 365119 0 0 3 0x14200 cleaner cleaner 84823 232851 0 0 3 0x14200 reaper reaper 9528 286565 0 0 3 0x14200 pgdaemon pagedaemon 18447 413474 0 0 3 0x14200 bored viomb 76254 360684 0 0 3 0x40014200 acpi0 acpi0 62763 394496 0 0 3 0x14200 bored softnet7 17873 284826 0 0 3 0x14200 bored softnet6 15397 357021 0 0 3 0x14200 bored softnet5 30924 63268 0 0 3 0x14200 bored softnet4 7682 229367 0 0 3 0x14200 bored softnet3 99294 126330 0 0 3 0x14200 bored softnet2 90039 103808 0 0 3 0x14200 bored softnet1 82528 438724 0 0 3 0x14200 bored softnet0 72311 247143 0 0 3 0x14200 bored systqmp 36777 215438 0 0 3 0x14200 bored systq 99399 369403 0 0 2 0x40014200 softclock 63058 489694 0 0 3 0x40014200 idle0 1 425480 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 10192 11124K 11261K 166960K 11820 0 pcb 18 14K 16K 166960K 188 0 rtable 215 8K 8K 166960K 375 0 pf 32 13K 19K 166960K 94 0 ifaddr 40 7K 8K 166960K 76 0 ifgroup 53 2K 2K 166960K 123 0 sysctl 4 1K 9K 166960K 14 0 counters 32 17K 18K 166960K 61 0 ioctlops 0 0K 4K 166960K 174 0 iov 0 0K 16K 166960K 59 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1402 88K 89K 166960K 1979 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 8 0 VM map 2 1K 1K 166960K 2 0 sem 17 5K 5K 166960K 155 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 232K 166960K 653 0 sigio 1 0K 0K 166960K 17 0 proc 60 59K 100K 166960K 540 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 127 0 in_multi 94 6K 7K 166960K 121 0 ether_multi 1 0K 0K 166960K 3 0 mrt 0 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 91 413K 413K 166960K 91 0 exec 0 0K 1K 166960K 406 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 241 152K 180K 166960K 7066 0 UVM aobj 14 2K 2K 166960K 14 0 pinsyscall 38 76K 90K 166960K 1677 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 43 0 NDP 11 0K 2K 166960K 49 0 temp 56 8638K 8718K 166960K 34393 0 kqueue 13 20K 39K 166960K 149 0 SYN cache 2 8K 16K 166960K 3 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 75 0 72 1 0 1 1 0 8 0 rtentry 136 119 0 34 4 0 4 4 0 8 0 unpcb 144 689 0 674 4 0 4 4 0 8 3 syncache 336 7 0 7 1 0 1 1 0 8 1 tcpqe 32 3 0 3 1 0 1 1 0 8 1 tcpcb 736 203 0 197 7 0 7 7 0 8 6 arp 88 17 0 4 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 1 0 0 1 0 1 1 0 8 0 inpcb 328 729 0 715 7 0 7 7 0 8 5 ip6q 72 3 0 1 1 0 1 1 0 8 0 ip6af 40 4 0 2 1 0 1 1 0 8 0 nd6 104 19 0 1 1 0 1 1 0 8 0 pkpcb 40 6 0 6 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 0 1 1 0 8 1 ppxss 1072 20 0 20 1 0 1 1 0 8 1 pppxif 1384 4 0 4 1 0 1 1 0 8 1 pfrktable 1344 1 0 1 1 0 1 1 0 8 1 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pfrule 1344 4 0 3 1 0 1 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 507 0 101 30 0 30 30 0 8 2 art_table 40 509 0 101 5 0 5 5 0 8 0 art_node 32 119 0 47 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 1 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 149 0 134 1 0 1 1 0 8 0 shmpl 112 11 0 0 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 2723 0 1229 95 0 95 95 0 8 0 ffsino 256 2723 0 1229 95 0 95 95 0 8 0 nchpl 144 3656 0 1976 63 0 63 63 0 8 0 rtmask 32 1 0 1 1 0 1 1 0 8 1 uvmvnodes 80 3069 0 0 63 0 63 63 0 8 0 vnodes 216 3069 0 0 171 0 171 171 0 8 0 namei 1024 12042 0 12041 2 0 2 2 0 8 1 kstatmem 264 66 0 44 2 0 2 2 0 8 0 scsiplug 72 5 0 5 1 0 1 1 0 8 1 scxspl 216 13578 0 13578 8 0 8 8 1 8 8 plimitpl 152 170 0 150 1 0 1 1 0 8 0 sigapl 424 946 0 876 9 0 9 9 0 8 0 knotepl 120 301443 0 301396 28 17 11 17 0 8 8 kqueuepl 184 251 0 238 3 0 3 3 0 8 2 pipepl 304 212 0 184 3 0 3 3 0 8 0 fdescpl 448 904 0 875 4 0 4 4 0 8 0 filepl 120 6102 0 5870 13 0 13 13 0 8 5 lockfpl 104 235 0 231 1 0 1 1 0 8 0 lockfspl 48 79 0 75 1 0 1 1 0 8 0 sessionpl 144 24 0 16 1 0 1 1 0 8 0 pgrppl 48 42 0 26 1 0 1 1 0 8 0 ucredpl 104 1242 0 1229 1 0 1 1 0 8 0 zombiepl 144 877 0 876 1 0 1 1 0 8 0 processpl 1168 946 0 876 6 0 6 6 0 8 0 procpl 664 1727 0 1645 8 0 8 8 0 8 0 sosppl 168 3 0 3 1 0 1 1 0 8 1 sockpl 552 1552 0 1520 8 0 8 8 0 8 5 mcl64k 65536 65 0 64 1 0 1 1 0 8 0 mcl16k 16384 2 0 2 1 0 1 1 0 8 1 mcl8k 8192 5 0 5 1 0 1 1 0 8 1 mcl4k 4096 3121 0 3070 14 0 14 14 0 8 7 mcl2k2 2112 1 0 1 1 0 1 1 0 8 1 mcl2k 2048 917 0 913 2 0 2 2 0 8 1 mtagpl 96 7 0 5 1 0 1 1 0 8 0 mbufpl 256 9574 0 9353 15 0 15 15 0 8 0 bufpl 280 5156 0 123 360 0 360 360 0 8 0 anonpl 24 174422 0 166136 89 0 89 89 0 187 13 amapchunkpl 152 24497 0 23902 41 0 41 41 0 158 17 amappl16 200 3630 0 3369 28 0 28 28 0 8 2 amappl15 192 40 0 40 1 0 1 1 0 8 1 amappl14 184 139 0 129 1 0 1 1 0 8 0 amappl13 176 4 0 4 1 0 1 1 0 8 1 amappl12 168 1513 0 1484 2 0 2 2 0 8 0 amappl11 160 42 0 32 1 0 1 1 0 8 0 amappl10 152 3 0 3 1 0 1 1 0 8 1 amappl9 144 257 0 257 1 0 1 1 0 8 1 amappl8 136 41 0 39 1 0 1 1 0 8 0 amappl7 128 104 0 94 1 0 1 1 0 8 0 amappl6 120 174 0 169 1 0 1 1 0 8 0 amappl5 112 109 0 103 1 0 1 1 0 8 0 amappl4 104 280 0 264 1 0 1 1 0 8 0 amappl3 96 4595 0 4481 4 0 4 4 0 8 0 amappl2 88 630 0 575 2 0 2 2 0 8 0 amappl1 80 10651 0 10111 13 0 13 13 0 8 0 amappl 88 6311 0 6136 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 6 0 6 1 0 1 1 0 8 1 dma32 32 7 0 7 1 0 1 1 0 8 1 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 13 0 0 1 0 1 1 0 8 0 uaddrrnd 24 904 0 875 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 904 0 875 1 0 1 1 0 8 0 vmmpekpl 168 8760 0 8728 2 0 2 2 0 8 0 vmmpepl 168 63595 0 61498 105 0 105 105 0 357 4 vmsppl 368 903 0 875 4 0 4 4 0 8 1 rwobjpl 40 22414 0 18237 44 0 44 44 0 8 1 pdppl 4096 1814 0 1750 100 34 66 76 0 8 2 pvpl 32 428387 0 414743 182 0 182 182 0 265 35 pmappl 216 903 0 875 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 387 0 34 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff80003c97aa98,ffffffffffffffff,0,c0000d06,fffffd806c3f9518,fffffd8007bfb888) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c97aa98,ffffffffffffffff,0,c0000d06,fffffd806c3f9518,fffffd8007bfb888) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806c3f9518,4,40000d06,0,ffff80003c97aa98) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806c3f9518,4,40000d06,0,ffff80003c97aa98) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003c97aa98,ffff80003c984f60,ffff80003c984eb0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c984f60) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c984f60) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x69481a81760, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff80003c97aa98,ffffffffffffffff,0,c0000d06,fffffd806c3f9518,fffffd8007bfb888) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c97aa98,ffffffffffffffff,0,c0000d06,fffffd806c3f9518,fffffd8007bfb888) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806c3f9518,4,40000d06,0,ffff80003c97aa98) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806c3f9518,4,40000d06,0,ffff80003c97aa98) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003c97aa98,ffff80003c984f60,ffff80003c984eb0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c984f60) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c984f60) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x69481a81760, count: -5