uvm_fault(0xfffffd8069bbd180, 0x7, 0, 1) -> e kernel: page fault trap, code=0 Stopped at ktrops+0x4e: movq 0x8(%rbx),%r14 TID PID UID PRFLAGS PFLAGS CPU COMMAND *196332 54239 0 0x10 0x4000000 0 syz-executor.4 ktrops(ffff8000216d8808,ffffffffffffffff,0,80000120,fffffd8065e08498,fffffd807f7d75b0) at ktrops+0x4e ktrcanset sys/kern/kern_ktrace.c:700 [inline] ktrops(ffff8000216d8808,ffffffffffffffff,0,80000120,fffffd8065e08498,fffffd807f7d75b0) at ktrops+0x4e sys/kern/kern_ktrace.c:543 doktrace(fffffd8065e08498,4,120,0,ffff8000216d8808) at doktrace+0x524 ktrsetchildren sys/kern/kern_ktrace.c:568 [inline] doktrace(fffffd8065e08498,4,120,0,ffff8000216d8808) at doktrace+0x524 sys/kern/kern_ktrace.c:490 sys_ktrace(ffff8000216d8808,ffff80002e87c4a0,ffff80002e87c4f0) at sys_ktrace+0xd6 sys/kern/kern_ktrace.c:531 syscall(ffff80002e87c570) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1414e527800, 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(0xfffffd8069bbd180, 0x7, 0, 1) -> e ddb> trace ktrops(ffff8000216d8808,ffffffffffffffff,0,80000120,fffffd8065e08498,fffffd807f7d75b0) at ktrops+0x4e ktrcanset sys/kern/kern_ktrace.c:700 [inline] ktrops(ffff8000216d8808,ffffffffffffffff,0,80000120,fffffd8065e08498,fffffd807f7d75b0) at ktrops+0x4e sys/kern/kern_ktrace.c:543 doktrace(fffffd8065e08498,4,120,0,ffff8000216d8808) at doktrace+0x524 ktrsetchildren sys/kern/kern_ktrace.c:568 [inline] doktrace(fffffd8065e08498,4,120,0,ffff8000216d8808) at doktrace+0x524 sys/kern/kern_ktrace.c:490 sys_ktrace(ffff8000216d8808,ffff80002e87c4a0,ffff80002e87c4f0) at sys_ktrace+0xd6 sys/kern/kern_ktrace.c:531 syscall(ffff80002e87c570) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1414e527800, count: -5 ddb> show registers rdi 0xffff8000216d8808 rsi 0xffffffffffffffff rbp 0xffff80002e87c290 rbx 0xffffffffffffffff rdx 0 rcx 0x80000120 __kernel_virt_to_phys+0x120 rax 0xffff8000216d8808 r8 0xfffffd8065e08498 r9 0xfffffd807f7d75b0 r10 0xea67f137e5a47c5d r11 0x309966e5a8860716 r12 0xffffffffffffffff r13 0xfffffd807f7d75b0 r14 0xffff8000216d8808 r15 0x80000120 __kernel_virt_to_phys+0x120 rip 0xffffffff81059a1e ktrops+0x4e cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002e87c210 ss 0 ktrops+0x4e: movq 0x8(%rbx),%r14 ddb> show proc PROC (syz-executor.4) tid=196332 pid=54239 tcnt=3 stat=onproc flags process=10 proc=4000000 runpri=17, usrpri=52, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff8000216d7d68,0xffff8000216d8020 process=0xffff8000ffff73c0 user=0xffff80002e877000, vmspace=0xfffffd8069bbd180 estcpu=2, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 54239 46697 55511 0 3 0x90 nanoslp syz-executor.4 *54239 196332 55511 0 7 0x4000010 syz-executor.4 54239 129975 55511 0 3 0x4000090 fsleep syz-executor.4 40351 372771 53150 0 2 0 syz-executor.2 96262 304190 699 0 2 0 syz-executor.6 63336 329856 43045 0 2 0 syz-executor.0 13324 519828 95794 0 3 0x80 nanoslp syz-executor.1 13324 330530 95794 0 3 0x4000080 kqpoll syz-executor.1 52155 20526 17047 0 2 0x480 syz-executor.7 52155 283662 17047 0 2 0x4000000 syz-executor.7 52155 383563 17047 0 3 0x4000080 fsleep syz-executor.7 699 467400 17952 0 3 0x82 nanoslp syz-executor.6 17047 266561 17952 0 3 0x82 nanoslp syz-executor.7 7618 161622 17952 0 3 0x82 nanoslp syz-executor.5 55511 96214 17952 0 3 0x82 nanoslp syz-executor.4 42705 453752 17952 0 2 0x2 syz-executor.3 53150 523938 17952 0 2 0x2 syz-executor.2 43045 282908 17952 0 2 0x482 syz-executor.0 95794 317217 17952 0 2 0x482 syz-executor.1 17952 422426 19042 0 3 0x2000082 wait syz-fuzzer 17952 524165 19042 0 3 0x6000082 nanoslp syz-fuzzer 17952 37664 19042 0 3 0x6000082 wait syz-fuzzer 17952 339686 19042 0 3 0x6000082 wait syz-fuzzer 17952 353786 19042 0 3 0x6000082 wait syz-fuzzer 17952 483814 19042 0 3 0x6000082 thrsleep syz-fuzzer 17952 128358 19042 0 3 0x6000082 thrsleep syz-fuzzer 17952 297920 19042 0 3 0x6000082 wait syz-fuzzer 17952 166526 19042 0 3 0x6000082 wait syz-fuzzer 17952 248551 19042 0 3 0x6000082 thrsleep syz-fuzzer 17952 379951 19042 0 3 0x6000082 wait syz-fuzzer 17952 164137 19042 0 3 0x6000082 wait syz-fuzzer 17952 385481 19042 0 2 0x6000002 syz-fuzzer 17952 485791 19042 0 3 0x6000082 thrsleep syz-fuzzer 19042 220698 27189 0 3 0x10008a sigsusp ksh 27189 437292 51935 0 2 0x12 sshd 79487 241352 1 0 3 0x100083 ttyin getty 51935 81586 1 0 3 0x88 kqread sshd 48509 151353 26514 73 3 0x1100090 kqread syslogd 26514 108797 1 0 3 0x100082 netio syslogd 3126 8670 1 0 3 0x100080 kqread resolvd 23931 109236 42859 77 3 0x100092 kqread dhcpleased 59981 412016 42859 77 3 0x100092 kqread dhcpleased 42859 38616 1 0 3 0x80 kqread dhcpleased 1656 372155 0 0 3 0x14200 bored smr 35824 518376 0 0 2 0x14200 zerothread 40260 482128 0 0 3 0x14200 aiodoned aiodoned 35939 207987 0 0 3 0x14200 syncer update 52261 91122 0 0 3 0x14200 cleaner cleaner 87201 267970 0 0 3 0x14200 reaper reaper 18927 172762 0 0 3 0x14200 pgdaemon pagedaemon 64351 87231 0 0 3 0x14200 bored viomb 31358 120204 0 0 3 0x40014200 acpi0 acpi0 59311 121803 0 0 3 0x14200 bored softnet3 10922 266546 0 0 3 0x14200 bored softnet2 40744 91241 0 0 3 0x14200 bored softnet1 20821 173310 0 0 2 0x14200 softnet0 40020 421498 0 0 3 0x14200 bored systqmp 60373 481967 0 0 3 0x14200 bored systq 92297 272426 0 0 3 0x40014200 bored softclock 32239 306054 0 0 3 0x40014200 idle0 1 387154 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 10166 6424K 6424K 78643K 11250 0 pcb 13 8K 8K 78643K 13 0 rtable 234 6K 6K 78643K 350 0 pf 29 8K 8K 78643K 29 0 ifaddr 43 11K 11K 78643K 45 0 ifgroup 50 2K 2K 78643K 50 0 counters 28 17K 17K 78643K 28 0 ioctlops 0 0K 2K 78643K 35 0 iov 0 0K 0K 78643K 3 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1278 80K 80K 78643K 1291 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 1K 78643K 2 0 VM map 2 1K 1K 78643K 2 0 sem 3 0K 0K 78643K 5 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 16 57K 77K 78643K 162 0 proc 55 58K 75K 78643K 473 0 subproc 104 6K 6K 78643K 104 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 99 7K 7K 78643K 99 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 25 122K 122K 78643K 25 0 exec 0 0K 1K 78643K 364 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 8 62K 64K 78643K 10 0 UVM amap 303 85K 86K 78643K 3498 0 UVM aobj 3 2K 2K 78643K 3 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 3 0 NDP 11 0K 1K 78643K 27 0 temp 33 5898K 5962K 78643K 4197 0 kqueue 13 20K 22K 78643K 28 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 36 0 33 1 0 1 1 0 8 0 rtentry 112 111 0 1 4 0 4 4 0 8 0 unpcb 144 105 0 26 3 0 3 3 0 8 0 syncache 304 4 0 4 1 1 0 1 0 8 0 tcpqe 32 248 0 248 1 1 0 1 0 8 0 tcpcb 808 8 0 4 1 0 1 1 0 8 0 arp 88 18 0 0 1 0 1 1 0 8 0 inpcb 336 64 0 57 1 0 1 1 0 8 0 nd6 104 24 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 453 0 0 29 0 29 29 0 8 0 art_table 32 454 0 0 4 0 4 4 0 8 0 art_node 16 110 0 10 1 0 1 1 0 8 0 semapl 112 3 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1520 0 81 90 0 90 90 0 8 0 ffsino 240 1520 0 81 85 0 85 85 0 8 0 nchpl 144 1847 0 165 63 0 63 63 0 8 0 uvmvnodes 80 1633 0 0 34 0 34 34 0 8 0 vnodes 216 1633 0 0 91 0 91 91 0 8 0 namei 1024 6471 0 6471 3 2 1 3 0 8 1 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 6386 0 6386 3 2 1 3 1 8 1 plimitpl 152 33 0 18 1 0 1 1 0 8 0 sigapl 424 459 0 415 6 0 6 6 0 8 0 futexpl 64 692 0 690 1 0 1 1 0 8 0 knotepl 120 6196 0 6115 3 0 3 3 0 8 0 kqueuepl 184 27 0 17 1 0 1 1 0 8 0 pipepl 288 140 0 110 3 0 3 3 0 8 0 fdescpl 432 443 0 416 4 0 4 4 0 8 0 filepl 120 2008 0 1663 11 0 11 11 0 8 0 lockfpl 104 15 0 12 1 0 1 1 0 8 0 lockfspl 48 9 0 6 1 0 1 1 0 8 0 sessionpl 144 23 0 7 1 0 1 1 0 8 0 pgrppl 48 25 0 9 1 0 1 1 0 8 0 ucredpl 104 59 0 48 1 0 1 1 0 8 0 zombiepl 144 416 0 415 1 0 1 1 0 8 0 processpl 1008 459 0 415 8 1 7 7 0 8 1 procpl 680 522 0 460 6 0 6 6 0 8 0 sockpl 456 205 0 116 12 0 12 12 0 8 0 mcl64k 65536 9 0 9 1 0 1 1 0 8 1 mcl16k 16384 15 0 15 1 0 1 1 0 8 1 mcl12k 12288 2 0 2 1 0 1 1 0 8 1 mcl8k 8192 10 0 10 2 1 1 1 0 8 1 mcl4k 4096 14 0 14 2 1 1 1 0 8 1 mcl2k2 2112 1 0 1 1 0 1 1 0 8 1 mcl2k 2048 63093 0 63041 31 16 15 27 0 8 7 mtagpl 96 4 0 4 1 1 0 1 0 8 0 mbufpl 256 99918 0 99759 20 7 13 15 0 8 2 bufpl 288 4127 0 146 285 0 285 285 0 8 0 anonpl 24 209531 0 197793 72 0 72 72 0 188 0 amapchunkpl 152 12396 0 11624 34 0 34 34 0 158 1 amappl16 200 5904 0 5580 19 1 18 18 0 8 0 amappl15 192 13 0 13 1 1 0 1 0 8 0 amappl14 184 154 0 142 2 1 1 2 0 8 0 amappl13 176 11 0 11 1 1 0 1 0 8 0 amappl12 168 1060 0 1035 2 0 2 2 0 8 0 amappl11 160 51 0 40 1 0 1 1 0 8 0 amappl10 152 28 0 20 2 1 1 1 0 8 0 amappl9 144 120 0 119 1 0 1 1 0 8 0 amappl8 136 162 0 116 2 0 2 2 0 8 0 amappl7 128 55 0 48 1 0 1 1 0 8 0 amappl6 120 223 0 203 2 1 1 2 0 8 0 amappl5 112 165 0 155 1 0 1 1 0 8 0 amappl4 104 522 0 490 2 1 1 2 0 8 0 amappl3 96 3084 0 3013 4 1 3 3 0 8 0 amappl2 88 669 0 611 3 1 2 3 0 8 0 amappl1 80 9828 0 9330 22 4 18 22 0 8 7 amappl 88 3000 0 2800 6 0 6 6 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 443 0 416 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 443 0 416 1 0 1 1 0 8 0 vmmpekpl 168 9503 0 9449 3 0 3 3 0 8 0 vmmpepl 168 50662 0 48626 112 1 111 112 0 357 20 vmsppl 368 442 0 416 3 0 3 3 0 8 0 rwobjpl 24 22046 0 19129 20 1 19 20 0 8 0 pdppl 4096 893 0 832 101 38 63 71 0 8 2 pvpl 32 421880 0 405116 358 21 337 358 0 265 199 pmappl 216 442 0 416 2 0 2 2 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 671 0 67 18 0 18 18 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff8000216d8808,ffffffffffffffff,0,80000120,fffffd8065e08498,fffffd807f7d75b0) at ktrops+0x4e ktrcanset sys/kern/kern_ktrace.c:700 [inline] ktrops(ffff8000216d8808,ffffffffffffffff,0,80000120,fffffd8065e08498,fffffd807f7d75b0) at ktrops+0x4e sys/kern/kern_ktrace.c:543 doktrace(fffffd8065e08498,4,120,0,ffff8000216d8808) at doktrace+0x524 ktrsetchildren sys/kern/kern_ktrace.c:568 [inline] doktrace(fffffd8065e08498,4,120,0,ffff8000216d8808) at doktrace+0x524 sys/kern/kern_ktrace.c:490 sys_ktrace(ffff8000216d8808,ffff80002e87c4a0,ffff80002e87c4f0) at sys_ktrace+0xd6 sys/kern/kern_ktrace.c:531 syscall(ffff80002e87c570) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1414e527800, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff8000216d8808,ffffffffffffffff,0,80000120,fffffd8065e08498,fffffd807f7d75b0) at ktrops+0x4e ktrcanset sys/kern/kern_ktrace.c:700 [inline] ktrops(ffff8000216d8808,ffffffffffffffff,0,80000120,fffffd8065e08498,fffffd807f7d75b0) at ktrops+0x4e sys/kern/kern_ktrace.c:543 doktrace(fffffd8065e08498,4,120,0,ffff8000216d8808) at doktrace+0x524 ktrsetchildren sys/kern/kern_ktrace.c:568 [inline] doktrace(fffffd8065e08498,4,120,0,ffff8000216d8808) at doktrace+0x524 sys/kern/kern_ktrace.c:490 sys_ktrace(ffff8000216d8808,ffff80002e87c4a0,ffff80002e87c4f0) at sys_ktrace+0xd6 sys/kern/kern_ktrace.c:531 syscall(ffff80002e87c570) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1414e527800, count: -5