uvm_fault(0xfffffd8068c11aa0, 0x2f, 0, 1) -> e kernel: page fault trap, code=0 Stopped at sysctl_diskinit+0x80: movq 0x30(%rbx),%r14 TID PID UID PRFLAGS PFLAGS CPU COMMAND *487949 39802 0 0 0x4000000 0 syz-executor.0 sysctl_diskinit(1,ffffffff82756910) at sysctl_diskinit+0x80 sys/kern/kern_sysctl.c:2143 hw_sysctl(ffff8000216ed454,1,0,ffff8000216ed488,0,0,d6a5cf73bdeaf3e0) at hw_sysctl+0x61a sys/kern/kern_sysctl.c:706 sys_sysctl(ffff8000216d3ce8,ffff8000216ed4f8,ffff8000216ed550) at sys_sysctl+0x209 sys/kern/kern_sysctl.c:250 syscall(ffff8000216ed5c0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xec237694f0, 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(0xfffffd8068c11aa0, 0x2f, 0, 1) -> e ddb> trace sysctl_diskinit(1,ffffffff82756910) at sysctl_diskinit+0x80 sys/kern/kern_sysctl.c:2143 hw_sysctl(ffff8000216ed454,1,0,ffff8000216ed488,0,0,d6a5cf73bdeaf3e0) at hw_sysctl+0x61a sys/kern/kern_sysctl.c:706 sys_sysctl(ffff8000216d3ce8,ffff8000216ed4f8,ffff8000216ed550) at sys_sysctl+0x209 sys/kern/kern_sysctl.c:250 syscall(ffff8000216ed5c0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xec237694f0, count: -5 ddb> show registers rdi 0xffff800023100000 rsi 0x1c rbp 0xffff8000216ed390 rbx 0xffffffffffffffff rdx 0xffff800023100000 rcx 0x1b rax 0xffffffff812d5066 sysctl_diskinit+0xb6 r8 0x101010101010101 r9 0x8080808080808080 r10 0xdc47733255ca48af r11 0x4f5ea5432132c0b r12 0x2b r13 0 r14 0xffff8000006b3024 r15 0x1 rip 0xffffffff812d5030 sysctl_diskinit+0x80 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000216ed340 ss 0x10 sysctl_diskinit+0x80: movq 0x30(%rbx),%r14 ddb> show proc PROC (syz-executor.0) pid=487949 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000216d2d28,0xffffffff82860290 process=0xffff800024b80fd8 user=0xffff8000216e8000, vmspace=0xfffffd8068c11aa0 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 39802 9358 6741 0 2 0 syz-executor.0 *39802 487949 6741 0 7 0x4000000 syz-executor.0 6741 34948 80871 0 3 0x82 nanoslp syz-executor.0 67027 4328 80871 0 2 0x2 syz-executor.1 18969 394341 0 0 3 0x14200 acct acct 13125 75753 0 0 3 0x14200 bored sosplice 91253 459408 0 0 3 0x14280 nfsidl nfsio 9984 46451 0 0 3 0x14280 nfsidl nfsio 37728 121934 0 0 3 0x14280 nfsidl nfsio 36704 445375 0 0 3 0x14280 nfsidl nfsio 33179 475640 0 0 3 0x14280 nfsidl nfsio 24527 186083 0 0 3 0x14280 nfsidl nfsio 32102 433486 0 0 3 0x14280 nfsidl nfsio 63889 148801 0 0 3 0x14280 nfsidl nfsio 73990 280138 0 0 3 0x14280 nfsidl nfsio 34707 445580 0 0 3 0x14280 nfsidl nfsio 53572 50587 0 0 3 0x14280 nfsidl nfsio 31365 496218 0 0 3 0x14280 nfsidl nfsio 81093 225377 0 0 3 0x14280 nfsidl nfsio 78678 97451 0 0 3 0x14280 nfsidl nfsio 73872 412808 0 0 3 0x14280 nfsidl nfsio 25641 191032 0 0 3 0x14280 nfsidl nfsio 67506 257031 0 0 3 0x14280 nfsidl nfsio 21970 266003 0 0 3 0x14280 nfsidl nfsio 29699 261539 0 0 3 0x14280 nfsidl nfsio 91168 194471 0 0 3 0x14280 nfsidl nfsio 80871 96022 736 0 3 0x82 thrsleep syz-fuzzer 80871 241763 736 0 3 0x4000082 nanoslp syz-fuzzer 80871 147324 736 0 3 0x4000082 thrsleep syz-fuzzer 80871 506176 736 0 3 0x4000082 thrsleep syz-fuzzer 80871 408049 736 0 3 0x4000082 thrsleep syz-fuzzer 80871 29082 736 0 3 0x4000082 kqread syz-fuzzer 736 313662 85813 0 3 0x10008a sigsusp ksh 85813 384847 10573 0 3 0x9a kqread sshd 68731 419303 1 0 3 0x100083 ttyin getty 10573 194876 1 0 3 0x88 kqread sshd 36630 141191 22160 73 3 0x100090 kqread syslogd 22160 145792 1 0 3 0x100082 netio syslogd 44795 466220 1 0 3 0x100080 kqread resolvd 64281 345796 77092 77 3 0x100092 kqread dhcpleased 27935 348410 77092 77 3 0x100092 kqread dhcpleased 77092 20720 1 0 3 0x80 kqread dhcpleased 55090 493920 0 0 3 0x14200 bored smr 15263 131650 0 0 2 0x14200 zerothread 32299 245987 0 0 3 0x14200 aiodoned aiodoned 86805 37188 0 0 3 0x14200 syncer update 72889 513102 0 0 3 0x14200 cleaner cleaner 80765 361937 0 0 3 0x14200 reaper reaper 5613 293039 0 0 3 0x14200 pgdaemon pagedaemon 18808 214379 0 0 3 0x14200 bored viomb 49073 500983 0 0 3 0x40014200 acpi0 acpi0 56678 212817 0 0 3 0x14200 bored softnet 65184 467875 0 0 3 0x14200 bored systqmp 95015 106142 0 0 3 0x14200 bored systq 29558 408848 0 0 3 0x40014200 bored softclock 84755 152086 0 0 3 0x40014200 idle0 1 383846 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10144 6390K 6843K 78643K 15870 0 pcb 13 16K 18K 78643K 1280 0 rtable 157 26K 27K 78643K 3832 0 ifaddr 66 18K 19K 78643K 981 0 counters 21 16K 16K 78643K 110 0 ioctlops 0 0K 4K 78643K 894 0 iov 0 0K 16K 78643K 409 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1306 82K 82K 78643K 3898 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 27 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 580 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 5 13K 25K 78643K 4108 0 sigio 0 0K 0K 78643K 11 0 proc 59 55K 63K 78643K 1455 0 subproc 26 1K 1K 78643K 510 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 234 0 in_multi 39 2K 2K 78643K 681 0 ether_multi 1 0K 0K 78643K 98 0 mrt 1 0K 0K 78643K 28 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 229 1023K 1023K 78643K 229 0 exec 0 0K 2K 78643K 1702 0 pfkey data 0 0K 1K 78643K 4 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 273 421K 422K 78643K 49589 0 UVM aobj 81 3K 3K 78643K 81 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 314 0 NDP 6 0K 0K 78643K 181 0 temp 85 4198K 6223K 78643K 58293 0 kqueue 12 18K 24K 78643K 184 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 397 0 394 5 4 1 3 0 8 0 rtentry 112 510 0 473 4 2 2 2 0 8 0 unpcb 128 2553 0 2540 29 27 2 5 0 8 1 syncache 296 21 0 21 8 8 0 1 0 8 0 tcpqe 32 55 0 55 6 6 0 1 0 8 0 tcpcb 736 1522 0 1516 68 61 7 10 0 8 6 arp 88 82 0 76 1 0 1 1 0 8 0 ipq 40 10 0 10 4 4 0 1 0 8 0 ipqe 40 153 0 153 4 4 0 1 0 8 0 inpcb 304 4863 0 4854 89 78 11 16 0 8 10 rttmr 72 11 0 11 4 4 0 1 0 8 0 nd6 48 128 0 122 1 0 1 1 0 8 0 pkpcb 40 21 0 21 4 3 1 1 0 8 1 kcovpl 48 39 0 37 1 0 1 1 0 8 0 ppxss 1152 41 0 41 2 2 0 1 0 8 0 pfstscr 40 7 0 6 1 0 1 1 0 8 0 pfrktable 1344 1173 0 1144 4 1 3 3 0 8 0 pftag 88 104 0 96 1 0 1 1 0 8 0 pfstitem 24 5 0 3 1 0 1 1 0 8 0 pfstkey 112 24 0 22 1 0 1 1 0 8 0 pfstate 320 12 0 11 1 0 1 1 0 8 0 pfrule 1360 456 0 372 11 3 8 8 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 2107 0 1920 24 12 12 14 0 8 0 art_table 32 2108 0 1920 2 0 2 2 0 8 0 art_node 16 509 0 479 1 0 1 1 0 8 0 sysvmsgpl 40 57 0 45 2 1 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 578 0 568 1 0 1 1 0 8 0 shmpl 112 78 0 0 3 0 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 7858 0 6449 89 0 89 89 0 8 0 ffsino 240 7858 0 6449 84 0 84 84 0 8 0 nchpl 144 13303 0 11711 60 0 60 60 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 49692 0 49692 3 2 1 1 0 8 1 vcpupl 1984 28 0 0 4 0 4 4 0 8 0 vmpool 528 40 0 12 2 0 2 2 0 8 0 pfiaddrpl 120 456 0 401 2 0 2 2 0 8 0 scxspl 216 48170 0 48170 13 10 3 8 0 8 3 plimitpl 152 615 0 607 1 0 1 1 0 8 0 sigapl 424 4250 0 4199 6 0 6 6 0 8 0 futexpl 64 39255 0 39255 5 4 1 1 0 8 1 knotepl 112 31243 0 31200 2 0 2 2 0 8 0 kqueuepl 184 1303 0 1295 20 19 1 4 0 8 0 pipepl 304 814 0 804 15 13 2 6 0 8 1 fdescpl 432 4213 0 4197 8 6 2 3 0 8 0 filepl 120 32660 0 32559 55 47 8 10 0 8 4 lockfpl 104 1108 0 1106 2 1 1 2 0 8 0 lockfspl 48 333 0 331 1 0 1 1 0 8 0 sessionpl 144 54 0 44 1 0 1 1 0 8 0 pgrppl 48 57 0 47 1 0 1 1 0 8 0 ucredpl 96 5116 0 5105 1 0 1 1 0 8 0 zombiepl 144 4199 0 4199 1 0 1 1 0 8 1 processpl 1000 4250 0 4199 8 1 7 7 0 8 0 procpl 672 10763 0 10706 16 10 6 7 0 8 0 sosppl 168 12 0 12 4 4 0 1 0 8 0 sockpl 448 7838 0 7813 178 160 18 25 0 8 15 mcl64k 65536 159 0 159 15 14 1 1 0 8 1 mcl16k 16384 62 0 62 12 12 0 1 0 8 0 mcl12k 12288 91 0 91 15 14 1 1 0 8 1 mcl9k 9216 92 0 92 13 12 1 1 0 8 1 mcl8k 8192 438 0 438 10 9 1 1 0 8 1 mcl4k 4096 655 0 655 11 10 1 1 0 8 1 mcl2k2 2112 45 0 45 11 11 0 1 0 8 0 mcl2k 2048 83807 0 83764 24 16 8 11 0 8 0 mtagpl 96 617 0 617 10 9 1 4 0 8 1 mbufpl 256 164399 0 164210 80 63 17 31 0 8 1 bufpl 288 13387 0 6988 458 0 458 458 0 8 0 anonpl 24 1147414 0 1129868 159 51 108 126 0 188 0 amapchunkpl 152 122279 0 121687 82 57 25 38 0 158 2 amappl16 200 9331 0 8707 55 21 34 45 0 8 1 amappl15 192 412 0 405 1 0 1 1 0 8 0 amappl14 184 449 0 446 1 0 1 1 0 8 0 amappl13 176 434 0 433 1 0 1 1 0 8 0 amappl12 168 330 0 329 1 0 1 1 0 8 0 amappl11 160 1014 0 998 1 0 1 1 0 8 0 amappl10 152 618 0 615 1 0 1 1 0 8 0 amappl9 144 317 0 314 1 0 1 1 0 8 0 amappl8 136 1775 0 1736 2 0 2 2 0 8 0 amappl7 128 1046 0 1041 1 0 1 1 0 8 0 amappl6 120 290 0 282 1 0 1 1 0 8 0 amappl5 112 3664 0 3646 1 0 1 1 0 8 0 amappl4 104 3058 0 3034 1 0 1 1 0 8 0 amappl3 96 905 0 887 1 0 1 1 0 8 0 amappl2 88 4953 0 4912 2 0 2 2 0 8 0 amappl1 80 74217 0 73804 21 11 10 12 0 8 0 amappl 88 47994 0 47827 5 0 5 5 0 92 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 128 253 0 253 1 1 0 1 0 8 0 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 18 0 17 1 0 1 1 0 8 0 aobjpl 72 80 0 0 2 0 2 2 0 8 0 uaddrrnd 24 4253 0 4209 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4253 0 4209 1 0 1 1 0 8 0 vmmpekpl 168 32189 0 32161 2 0 2 2 0 8 0 vmmpepl 168 400734 0 398924 274 166 108 112 0 357 22 vmsppl 272 4252 0 4209 4 1 3 3 0 8 0 rwobjpl 24 95712 0 88350 45 0 45 45 0 8 0 pdppl 4096 8512 0 8446 106 38 68 68 0 8 2 pvpl 32 2118805 0 2097855 329 156 173 227 0 265 4 pmappl 216 4252 0 4209 4 1 3 3 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 1184 0 403 23 0 23 23 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace sysctl_diskinit(1,ffffffff82756910) at sysctl_diskinit+0x80 sys/kern/kern_sysctl.c:2143 hw_sysctl(ffff8000216ed454,1,0,ffff8000216ed488,0,0,d6a5cf73bdeaf3e0) at hw_sysctl+0x61a sys/kern/kern_sysctl.c:706 sys_sysctl(ffff8000216d3ce8,ffff8000216ed4f8,ffff8000216ed550) at sys_sysctl+0x209 sys/kern/kern_sysctl.c:250 syscall(ffff8000216ed5c0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xec237694f0, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace sysctl_diskinit(1,ffffffff82756910) at sysctl_diskinit+0x80 sys/kern/kern_sysctl.c:2143 hw_sysctl(ffff8000216ed454,1,0,ffff8000216ed488,0,0,d6a5cf73bdeaf3e0) at hw_sysctl+0x61a sys/kern/kern_sysctl.c:706 sys_sysctl(ffff8000216d3ce8,ffff8000216ed4f8,ffff8000216ed550) at sys_sysctl+0x209 sys/kern/kern_sysctl.c:250 syscall(ffff8000216ed5c0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xec237694f0, count: -5