uvm_fault(0xffffffff839a2100, 0x4b, 0, 1) -> e kernel: page fault trap, code=0 Stopped at uvm_aio_aiodone+0x223: movl 0x48(%rax),%r12d TID PID UID PRFLAGS PFLAGS CPU COMMAND *484514 52323 0 0x14000 0x200 0 aiodoned uvm_aio_aiodone(fffffd806fbf17c0) at uvm_aio_aiodone+0x223 sys/uvm/uvm_pager.c:718 uvm_aiodone_daemon(ffff80002a777c90) at uvm_aiodone_daemon+0x212 sys/uvm/uvm_pdaemon.c:358 end trace frame: 0x0, count: 13 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(0xffffffff839a2100, 0x4b, 0, 1) -> e ddb> trace uvm_aio_aiodone(fffffd806fbf17c0) at uvm_aio_aiodone+0x223 sys/uvm/uvm_pager.c:718 uvm_aiodone_daemon(ffff80002a777c90) at uvm_aiodone_daemon+0x212 sys/uvm/uvm_pdaemon.c:358 end trace frame: 0x0, count: -2 ddb> show registers rdi 0 rsi 0 rbp 0xffff80002a7753e0 rbx 0 rdx 0 rcx 0x1 rax 0x3 r8 0xffff80002a73909a r9 0 r10 0x7b7c34978c11e80a r11 0xc6df3b4b56392446 r12 0x3 r13 0xffff800011036000 r14 0xfffffd806fbf17c0 r15 0 rip 0xffffffff81cd7313 uvm_aio_aiodone+0x223 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002a775310 ss 0x10 uvm_aio_aiodone+0x223: movl 0x48(%rax),%r12d ddb> show proc PROC (aiodoned) tid=484514 pid=52323 tcnt=1 stat=onproc flags process=14000 proc=200 runpri=4, usrpri=51, slppri=4, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a72dc88,0xffff80002a777770 process=0xffff8000ffffd200 user=0xffff80002a770000, vmspace=0xffffffff839a2100 estcpu=1, cpticks=7, pctcpu=0.1, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 94969 149859 65039 0 2 0 syz-executor 56788 28164 71148 0 2 0 syz-executor 56788 225621 71148 0 3 0x4000080 fsleep syz-executor 40725 393085 17125 0 2 0x2 syz-executor 60500 318153 17125 0 2 0x2 syz-executor 68013 371673 17125 0 2 0x2 syz-executor 65039 351553 17125 0 2 0x2 syz-executor 71148 35770 17125 0 2 0xc82 syz-executor 71288 218533 3249 0 3 0x3000 suspend syz-executor 71288 376391 3249 0 3 0x4081000 pfioctl_rw syz-executor 5470 195320 89859 0 3 0x3000 suspend syz-executor 5470 117123 89859 0 3 0x4081000 pfioctl_rw syz-executor 59299 132112 1 0 3 0x3000 suspend syz-executor 59299 493552 1 0 3 0x4081000 pfioctl_rw syz-executor 59299 519332 1 0 3 0x4081000 pfioctl_rw syz-executor 19035 215900 1 0 3 0x3000 suspend syz-executor 19035 495448 1 0 3 0x4081000 pfioctl_rw syz-executor 19035 43588 1 0 3 0x4081000 pfioctl_rw syz-executor 26273 351140 1 0 3 0x3000 suspend syz-executor 26273 423939 1 0 2 0x4081000 syz-executor 26273 301977 1 0 3 0x4081000 pfioctl_rw syz-executor 3249 219781 17125 0 3 0x82 wait syz-executor 76934 344513 1 0 3 0x100083 ttyin getty 89859 285278 17125 0 3 0x82 wait syz-executor 93384 29138 17125 0 2 0x2 syz-executor 17125 75905 9369 0 2 0x2 syz-executor 9369 184918 39836 0 3 0x10008a sigsusp ksh 39836 425414 59423 0 3 0x98 kqread sshd-session 59423 148182 7306 0 3 0x92 kqread sshd-session 7306 9758 1 0 3 0x88 kqread sshd 68690 202283 34155 73 3 0x1100090 kqread syslogd 34155 363342 1 0 3 0x100082 sbwait syslogd 58503 304456 1 0 3 0x100080 kqread resolvd 61649 345198 13424 77 3 0x100092 kqread dhcpleased 87709 282981 13424 77 3 0x100092 kqread dhcpleased 13424 87862 1 0 3 0x80 kqread dhcpleased 74852 240202 0 0 3 0x14200 bored smr 82185 43299 0 0 2 0x14200 zerothread *52323 484514 0 0 7 0x14200 aiodoned 67613 414269 0 0 3 0x14200 syncer update 57778 415770 0 0 3 0x14200 cleaner cleaner 18026 403838 0 0 3 0x14200 reaper reaper 262 420538 0 0 2 0x14200 pagedaemon 93143 41694 0 0 3 0x14200 bored viomb 34287 102894 0 0 3 0x40014200 acpi0 acpi0 89877 273086 0 0 2 0x14200 softnet0 94626 410635 0 0 3 0x14200 bored systqmp 66516 524131 0 0 3 0x14200 bored systq 13188 336200 0 0 3 0x40014200 tmoslp softclock 91926 522983 0 0 3 0x40014200 idle0 1 276446 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 11047 12111K 12474K 166960K 14776 0 pcb 17 14K 15K 166960K 341 0 rtable 123 7K 7K 166960K 684 0 pf 36 14K 16K 166960K 163 0 ifaddr 49 9K 9K 166960K 169 0 ifgroup 58 2K 2K 166960K 243 0 sysctl 4 1K 9K 166960K 24 0 counters 35 18K 18K 166960K 158 0 ioctlops 7 7K 8K 166960K 650 0 iov 0 0K 32K 166960K 172 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1468 92K 92K 166960K 2995 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 13K 166960K 9 0 VM map 2 1K 1K 166960K 2 0 sem 25 5K 5K 166960K 46 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 19 69K 240K 166960K 1849 0 sigio 0 0K 0K 166960K 73 0 proc 60 59K 124K 166960K 662 0 subproc 104 6K 6K 166960K 149 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 311 0 in_multi 30 2K 6K 166960K 212 0 ether_multi 1 0K 0K 166960K 17 0 mrt 2 0K 0K 166960K 9 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 555 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 248 191K 191K 166960K 16952 0 UVM aobj 63 24K 24K 166960K 79 0 pinsyscall 40 80K 98K 166960K 3037 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 110 0 NDP 15 0K 1K 166960K 85 0 temp 86 8739K 8801K 166960K 28635 0 kqueue 13 20K 29K 166960K 269 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 120 139 0 136 2 0 2 2 0 8 1 rtentry 136 200 0 165 4 0 4 4 0 8 1 unpcb 144 775 0 758 2 0 2 2 0 8 1 syncache 336 15 0 15 1 0 1 1 0 8 1 tcpqe 32 3 0 3 1 0 1 1 0 8 1 tcpcb 736 483 0 476 4 0 4 4 0 8 3 arp 96 30 0 24 1 0 1 1 0 8 0 ipq 40 2 0 1 1 0 1 1 0 8 0 ipqe 40 3 0 2 1 0 1 1 0 8 0 inpcb 328 1411 0 1398 10 1 9 10 0 8 7 ip6q 72 1 0 0 1 0 1 1 0 8 0 ip6af 40 1 0 0 1 0 1 1 0 8 0 nd6 112 35 0 29 1 0 1 1 0 8 0 pkpcb 40 7 0 7 1 0 1 1 0 8 1 kcovpl 48 15 0 5 1 0 1 1 0 8 0 ppxss 1072 91 0 91 1 0 1 1 0 8 1 pppxif 1384 63 0 63 1 0 1 1 0 8 1 pfstscr 40 26 0 26 1 0 1 1 0 8 1 pfrktable 1344 11 0 10 1 0 1 1 0 8 0 pfstitem 24 49 0 45 1 0 1 1 0 8 0 pfstkey 128 194 0 162 2 0 2 2 0 8 0 pfstate 384 112 0 110 1 0 1 1 0 8 0 pfrule 1360 3 0 3 1 0 1 1 0 8 1 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 792 0 642 27 13 14 27 0 8 4 art_table 40 796 0 642 5 0 5 5 0 8 3 art_node 32 199 0 168 1 0 1 1 0 8 0 sysvmsgpl 40 37 0 35 1 0 1 1 0 8 0 semupl 112 8 0 8 1 0 1 1 0 8 1 semapl 112 40 0 17 1 0 1 1 0 8 0 shmpl 112 63 0 13 2 0 2 2 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 4463 0 2954 95 0 95 95 0 8 0 ffsino 256 4463 0 2954 95 0 95 95 0 8 0 nchpl 144 6775 0 5070 64 0 64 64 0 8 0 rtmask 32 10 0 10 1 0 1 1 0 8 1 vnodes 216 5587 0 0 311 0 311 311 0 8 0 namei 1024 19646 0 19646 2 0 2 2 0 8 2 vcpupl 3904 10 0 0 2 0 2 2 0 8 0 vmpool 808 12 0 2 1 0 1 1 0 8 0 kstatmem 264 126 0 100 3 0 3 3 0 8 1 scsiplug 72 18 0 18 1 0 1 1 0 8 1 scxspl 216 23814 0 23814 9 1 8 9 1 8 8 plimitpl 152 391 0 368 1 0 1 1 0 8 0 sigapl 424 2123 0 2079 8 0 8 8 0 8 2 knotepl 120 60471 0 60424 10 0 10 10 0 8 6 kqueuepl 184 432 0 422 1 0 1 1 0 8 0 pipepl 304 203 0 173 3 0 3 3 0 8 0 fdescpl 448 2090 0 2059 5 0 5 5 0 8 1 filepl 120 9416 0 9155 11 0 11 11 0 8 3 lockfpl 104 526 0 524 1 0 1 1 0 8 0 lockfspl 48 247 0 245 1 0 1 1 0 8 0 sessionpl 144 41 0 33 1 0 1 1 0 8 0 pgrppl 48 81 0 60 1 0 1 1 0 8 0 ucredpl 104 1038 0 1027 1 0 1 1 0 8 0 zombiepl 144 2081 0 2079 1 0 1 1 0 8 0 processpl 1152 2123 0 2079 5 0 5 5 0 8 0 procpl 664 4148 0 4095 7 0 7 7 0 8 1 sosppl 176 6 0 5 1 0 1 1 0 8 0 sockpl 552 2366 0 2333 11 1 10 11 0 8 6 mcl64k 65536 229 0 229 1 0 1 1 0 8 1 mcl16k 16384 71 0 71 1 0 1 1 0 8 1 mcl12k 12288 41 0 41 1 0 1 1 0 8 1 mcl9k 9216 8 0 8 1 0 1 1 0 8 1 mcl8k 8192 113 0 113 1 0 1 1 0 8 1 mcl4k 4096 5307 0 5255 14 0 14 14 0 8 7 mcl2k2 2112 10 0 10 1 0 1 1 0 8 1 mcl2k 2048 2104 0 2102 4 0 4 4 0 8 3 mtagpl 96 35 0 28 1 0 1 1 0 8 0 mbufpl 256 24282 0 24180 126 108 18 76 0 8 8 bufpl 280 35553 0 30634 362 10 352 352 0 8 0 anonpl 24 269902 0 266464 47 0 47 47 0 187 16 amapchunkpl 152 61122 0 60611 36 0 36 36 0 158 15 amappl16 200 4063 0 4028 15 5 10 15 0 8 7 amappl15 192 38 0 38 1 0 1 1 0 8 1 amappl14 184 8 0 8 1 0 1 1 0 8 1 amappl13 176 440 0 439 1 0 1 1 0 8 0 amappl12 168 2502 0 2463 2 0 2 2 0 8 0 amappl11 160 5 0 5 1 0 1 1 0 8 1 amappl10 152 62 0 52 1 0 1 1 0 8 0 amappl9 144 247 0 247 1 0 1 1 0 8 1 amappl8 136 22 0 21 1 0 1 1 0 8 0 amappl7 128 94 0 93 1 0 1 1 0 8 0 amappl6 120 326 0 315 1 0 1 1 0 8 0 amappl5 112 102 0 93 1 0 1 1 0 8 0 amappl4 104 456 0 431 1 0 1 1 0 8 0 amappl3 96 10300 0 10205 3 0 3 3 0 8 0 amappl2 88 2291 0 2220 2 0 2 2 0 8 0 amappl1 80 19265 0 18713 15 0 15 15 0 8 1 amappl 88 15943 0 15768 5 0 5 5 0 92 0 uvmvnodes 80 138 0 0 3 0 3 3 0 8 0 dma16384 16384 1 0 1 1 0 1 1 0 8 1 dma4096 4096 2 0 2 1 0 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 0 1 1 0 8 1 dma128 128 253 0 253 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 23 0 22 1 0 1 1 0 8 0 aobjpl 72 78 0 16 2 0 2 2 0 8 0 uaoeltpl 96 51743 48 48126 89 0 89 89 0 8 0 uaddrrnd 24 2090 0 2059 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2090 0 2059 1 0 1 1 0 8 0 vmmpekpl 168 16812 0 16766 3 0 3 3 0 8 0 vmmpepl 168 137686 0 135828 94 0 94 94 0 357 9 vmsppl 368 2089 0 2059 4 0 4 4 0 8 1 rwobjpl 40 34561 0 33429 13 0 13 13 0 8 0 pdppl 4096 4210 0 4132 116 36 80 82 0 8 2 pvpl 32 1869463 0 1619054 2936 676 2260 2936 0 265 238 pmappl 216 2101 0 2061 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 509 0 157 12 0 12 12 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace uvm_aio_aiodone(fffffd806fbf17c0) at uvm_aio_aiodone+0x223 sys/uvm/uvm_pager.c:718 uvm_aiodone_daemon(ffff80002a777c90) at uvm_aiodone_daemon+0x212 sys/uvm/uvm_pdaemon.c:358 end trace frame: 0x0, count: -2 ddb> machine ddbcpu 1 No such command ddb> trace uvm_aio_aiodone(fffffd806fbf17c0) at uvm_aio_aiodone+0x223 sys/uvm/uvm_pager.c:718 uvm_aiodone_daemon(ffff80002a777c90) at uvm_aiodone_daemon+0x212 sys/uvm/uvm_pdaemon.c:358 end trace frame: 0x0, count: -2