uvm_fault(0xfffffd806cb1b180, 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 *126991 17808 0 0 0x4000000 0 syz-executor ktrops(ffff800035cdba10,ffffffffffffffff,0,80000538,fffffd80654a3640,fffffd8007ffd750) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff800035cdba10,ffffffffffffffff,0,80000538,fffffd80654a3640,fffffd8007ffd750) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd80654a3640,4,538,0,ffff800035cdba10) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd80654a3640,4,538,0,ffff800035cdba10) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff800035cdba10,ffff8000314c74a0,ffff8000314c73f0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff8000314c74a0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000314c74a0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb68aacb7480, 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(0xfffffd806cb1b180, 0xf, 0, 1) -> e ddb> trace ktrops(ffff800035cdba10,ffffffffffffffff,0,80000538,fffffd80654a3640,fffffd8007ffd750) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff800035cdba10,ffffffffffffffff,0,80000538,fffffd80654a3640,fffffd8007ffd750) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd80654a3640,4,538,0,ffff800035cdba10) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd80654a3640,4,538,0,ffff800035cdba10) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff800035cdba10,ffff8000314c74a0,ffff8000314c73f0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff8000314c74a0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000314c74a0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb68aacb7480, count: -5 ddb> show registers rdi 0xffff8000380ec000 rsi 0xe21 rbp 0xffff8000314c71c0 rbx 0xfffffd8007ffd750 rdx 0xffff8000380ec000 rcx 0xe20 rax 0xffffffff812ac9d3 ktrops+0x43 r8 0xfffffd80654a3640 r9 0xfffffd8007ffd750 r10 0xa8fa45e54c6689fc r11 0xbb093b10055758e3 r12 0xffff800035cdba10 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0x80000538 __kernel_virt_to_phys+0x538 rip 0xffffffff812ac9e8 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000314c7140 ss 0 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=126991 pid=17808 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=0xffff800035cdad18,0xffff800035cdbcb8 process=0xffff8000ffff9f98 user=0xffff8000314c2000, vmspace=0xfffffd806cb1b180 estcpu=2, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 96923 245097 1 0 2 0 init 3218 261365 80832 0 2 0 syz-executor 17808 384758 98429 0 2 0 syz-executor *17808 126991 98429 0 7 0x4000000 syz-executor 74592 290649 71190 0 2 0xc80 syz-executor 74592 171585 71190 0 3 0x4000080 fsleep syz-executor 22368 1147 76133 0 2 0 syz-executor 22368 468904 76133 0 3 0x4000080 fsleep syz-executor 38517 228433 53299 0 2 0 syz-executor 38517 149212 53299 0 3 0x4000080 kqpoll syz-executor 38517 453670 53299 0 3 0x4000080 fsleep syz-executor 82674 256768 44481 -1 2 0xc90 syz-executor 82674 506768 44481 -1 3 0x4000090 ttyin syz-executor 82674 141861 44481 -1 3 0x4000090 fsleep syz-executor 82674 263056 44481 -1 3 0x4000090 fsleep syz-executor 98551 432570 41562 0 2 0xc80 syz-executor 98551 186804 41562 0 3 0x4000088 kqpoll syz-executor 98551 313129 41562 0 3 0x4000080 piperd syz-executor 98551 222513 41562 0 3 0x4000080 fsleep syz-executor 75210 189671 43099 0 3 0x82 nanoslp syz-executor 98429 115954 43099 0 3 0x82 nanoslp syz-executor 71190 415206 43099 0 3 0x82 nanoslp syz-executor 80832 202723 43099 0 2 0x2 syz-executor 76133 376825 43099 0 2 0xc82 syz-executor 53299 373924 43099 0 2 0xc82 syz-executor 41562 82934 43099 0 2 0xc82 syz-executor 44481 359715 43099 0 2 0xc82 syz-executor 43099 306069 1 0 3 0x82 kqread syz-executor 23515 320510 1 73 3 0x1100090 kqread syslogd 83384 28857 0 0 3 0x14200 bored smr 61594 113322 0 0 2 0x14200 zerothread 47877 4172 0 0 3 0x14200 aiodoned aiodoned 11488 356272 0 0 3 0x14200 syncer update 23494 479025 0 0 3 0x14200 cleaner cleaner 14896 127176 0 0 3 0x14200 reaper reaper 19949 495240 0 0 3 0x14200 pgdaemon pagedaemon 15635 490314 0 0 3 0x14200 bored viomb 37105 256048 0 0 3 0x40014200 acpi0 acpi0 60064 356243 0 0 3 0x14200 bored softnet0 98779 53943 0 0 3 0x14200 bored systqmp 25887 486887 0 0 3 0x14200 bored systq 37483 143265 0 0 3 0x40014200 tmoslp softclock 8739 87503 0 0 3 0x40014200 idle0 1 25298 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 11040 12169K 12303K 166960K 12345 0 pcb 18 12K 12K 166960K 41 0 rtable 239 7K 7K 166960K 357 0 pf 30 12K 19K 166960K 48 0 ifaddr 42 7K 7K 166960K 47 0 ifgroup 50 2K 2K 166960K 56 0 sysctl 3 1K 9K 166960K 7 0 counters 33 17K 18K 166960K 37 0 ioctlops 0 0K 4K 166960K 83 0 iov 0 0K 20K 166960K 5 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1289 81K 82K 166960K 1427 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 1K 166960K 2 0 VM map 2 1K 1K 166960K 2 0 sem 9 0K 0K 166960K 10 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 93K 166960K 223 0 sigio 0 0K 0K 166960K 3 0 proc 11 17K 91K 166960K 505 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 28 0 in_multi 99 7K 7K 166960K 105 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 67 307K 307K 166960K 67 0 exec 0 0K 1K 166960K 378 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 148 87K 167K 166960K 3678 0 UVM aobj 4 2K 2K 166960K 4 0 pinsyscall 21 42K 94K 166960K 1315 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 14 0 NDP 11 0K 2K 166960K 30 0 temp 42 9068K 9132K 166960K 9924 0 kqueue 4 6K 24K 166960K 39 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 40 0 40 1 0 1 1 0 8 1 rtentry 136 111 0 1 4 0 4 4 0 8 0 unpcb 144 93 0 86 1 0 1 1 0 8 0 syncache 336 5 0 5 1 0 1 1 0 8 1 tcpcb 736 44 0 43 1 0 1 1 0 8 0 arp 96 18 0 0 1 0 1 1 0 8 0 inpcb 328 142 0 138 2 0 2 2 0 8 1 nd6 112 24 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 4 0 4 1 0 1 1 0 8 1 pfstlim 224 1 0 1 1 0 1 1 0 8 1 pfrule 1360 1 0 1 1 0 1 1 0 8 1 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 40 454 0 0 5 0 5 5 0 8 0 art_node 32 111 0 11 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 1 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 7 0 0 1 0 1 1 0 8 0 shmpl 112 1 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1727 0 272 92 0 92 92 0 8 0 ffsino 256 1727 0 272 92 0 92 92 0 8 0 nchpl 144 2055 0 362 64 0 64 64 0 8 0 vnodes 216 1848 0 0 103 0 103 103 0 8 0 namei 1024 6086 0 6086 2 0 2 2 0 8 2 kstatmem 264 29 0 6 2 0 2 2 0 8 0 scxspl 216 6675 0 6675 3 0 3 3 1 8 3 plimitpl 152 40 0 27 1 0 1 1 0 8 0 sigapl 424 517 0 483 6 0 6 6 0 8 1 knotepl 120 6945 0 6920 10 0 10 10 0 8 8 kqueuepl 184 108 0 103 1 0 1 1 0 8 0 pipepl 304 124 0 96 3 0 3 3 0 8 0 fdescpl 448 504 0 483 5 0 5 5 0 8 1 filepl 120 1883 0 1700 8 0 8 8 0 8 1 lockfpl 104 54 0 52 1 0 1 1 0 8 0 lockfspl 48 25 0 23 1 0 1 1 0 8 0 sessionpl 144 27 0 24 1 0 1 1 0 8 0 pgrppl 48 37 0 26 1 0 1 1 0 8 0 ucredpl 104 219 0 212 1 0 1 1 0 8 0 zombiepl 144 484 0 483 1 0 1 1 0 8 0 processpl 1152 517 0 483 4 0 4 4 0 8 0 procpl 664 660 0 615 5 0 5 5 0 8 0 sockpl 552 284 0 273 4 0 4 4 0 8 2 mcl64k 65536 18 0 18 1 0 1 1 0 8 1 mcl16k 16384 7 0 7 1 0 1 1 0 8 1 mcl12k 12288 2 0 2 1 0 1 1 0 8 1 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2674 0 2622 14 0 14 14 0 8 7 mcl2k2 2112 3 0 3 1 0 1 1 0 8 1 mcl2k 2048 182 0 182 1 0 1 1 0 8 1 mtagpl 96 71 0 4 2 0 2 2 0 8 0 mbufpl 256 5306 0 5087 15 0 15 15 0 8 0 bufpl 280 2458 0 102 169 0 169 169 0 8 0 anonpl 24 93738 0 91900 21 0 21 21 0 187 1 amapchunkpl 152 10647 0 10260 26 0 26 26 0 158 7 amappl16 200 1467 0 1447 4 0 4 4 0 8 2 amappl15 192 2 0 2 1 0 1 1 0 8 1 amappl14 184 410 0 410 1 0 1 1 0 8 1 amappl13 176 113 0 112 1 0 1 1 0 8 0 amappl12 168 743 0 724 2 0 2 2 0 8 0 amappl11 160 3 0 3 1 0 1 1 0 8 1 amappl10 152 83 0 81 1 0 1 1 0 8 0 amappl9 144 244 0 244 1 0 1 1 0 8 1 amappl8 136 117 0 117 1 0 1 1 0 8 1 amappl7 128 165 0 161 1 0 1 1 0 8 0 amappl6 120 154 0 153 1 0 1 1 0 8 0 amappl5 112 89 0 87 1 0 1 1 0 8 0 amappl4 104 265 0 258 1 0 1 1 0 8 0 amappl3 96 1946 0 1865 3 0 3 3 0 8 0 amappl2 88 502 0 489 2 0 2 2 0 8 0 amappl1 80 9366 0 9238 13 0 13 13 0 8 4 amappl 88 2980 0 2849 4 0 4 4 0 92 0 uvmvnodes 80 100 0 0 3 0 3 3 0 8 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 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 18 0 17 1 0 1 1 0 8 0 aobjpl 72 3 0 0 1 0 1 1 0 8 0 uaddrrnd 24 504 0 483 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 504 0 483 1 0 1 1 0 8 0 vmmpekpl 168 5691 0 5658 2 0 2 2 0 8 0 vmmpepl 168 39239 0 38302 81 0 81 81 0 357 33 vmsppl 368 503 0 483 4 0 4 4 0 8 1 rwobjpl 40 13725 0 13292 11 0 11 11 0 8 1 pdppl 4096 1014 0 966 96 30 66 80 0 8 18 pvpl 32 233982 0 229132 87 0 87 87 0 265 30 pmappl 216 503 0 483 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 363 0 30 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff800035cdba10,ffffffffffffffff,0,80000538,fffffd80654a3640,fffffd8007ffd750) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff800035cdba10,ffffffffffffffff,0,80000538,fffffd80654a3640,fffffd8007ffd750) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd80654a3640,4,538,0,ffff800035cdba10) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd80654a3640,4,538,0,ffff800035cdba10) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff800035cdba10,ffff8000314c74a0,ffff8000314c73f0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff8000314c74a0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000314c74a0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb68aacb7480, count: -5 ddb> machine ddbcpu 1 No such command ddb>