uvm_fault(0xfffffd806ba46740, 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 *160147 95950 0 0 0x4000000 0 syz-executor ktrops(ffff80003c996558,ffffffffffffffff,0,a0c7df9b,fffffd805e1928c0,fffffd8007bfba28) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c996558,ffffffffffffffff,0,a0c7df9b,fffffd805e1928c0,fffffd8007bfba28) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd805e1928c0,4,20c7df9b,0,ffff80003c996558) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd805e1928c0,4,20c7df9b,0,ffff80003c996558) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003c996558,ffff80003c99d7c0,ffff80003c99d710) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c99d7c0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c99d7c0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x181f9f02e00, 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(0xfffffd806ba46740, 0xf, 0, 1) -> e ddb> trace ktrops(ffff80003c996558,ffffffffffffffff,0,a0c7df9b,fffffd805e1928c0,fffffd8007bfba28) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c996558,ffffffffffffffff,0,a0c7df9b,fffffd805e1928c0,fffffd8007bfba28) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd805e1928c0,4,20c7df9b,0,ffff80003c996558) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd805e1928c0,4,20c7df9b,0,ffff80003c996558) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003c996558,ffff80003c99d7c0,ffff80003c99d710) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c99d7c0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c99d7c0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x181f9f02e00, count: -5 ddb> show registers rdi 0xffff800031d36000 rsi 0x1aa7 __ALIGN_SIZE+0xaa7 rbp 0xffff80003c99d4e0 rbx 0xfffffd8007bfba28 rdx 0xffff800031d36000 rcx 0x1aa6 __ALIGN_SIZE+0xaa6 rax 0xffffffff81a93843 ktrops+0x43 r8 0xfffffd805e1928c0 r9 0xfffffd8007bfba28 r10 0x516726e879172a96 r11 0xde0aabd575386532 r12 0xffff80003c996558 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0xa0c7df9b rip 0xffffffff81a93858 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c99d460 ss 0x10 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=160147 pid=95950 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=79, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c997a18,0xffff80003c996d30 process=0xffff8000ffff4da0 user=0xffff80003c998000, vmspace=0xfffffd806ba46740 estcpu=29, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 4997 314619 93714 0 2 0 syz-executor 4997 391267 93714 0 3 0x4000080 fsleep syz-executor 95950 297707 14169 0 2 0 syz-executor *95950 160147 14169 0 7 0x4000000 syz-executor 95950 25081 14169 0 2 0x4000000 syz-executor 79850 170156 64893 0 3 0x80 nanoslp syz-executor 79850 507382 64893 0 2 0x4000000 syz-executor 79850 316357 64893 0 3 0x4000000 inode syz-executor 79850 92529 64893 0 3 0x4000000 inode syz-executor 79850 78175 64893 0 3 0x4000000 inode syz-executor 79850 84085 64893 0 3 0x4000080 fsleep syz-executor 58199 383001 53898 0 2 0x3000 syz-executor 53806 93473 0 0 3 0x14200 bored sosplice 34542 54202 3556 0 2 0x2 syz-executor 84574 404597 3556 0 2 0x2 syz-executor 53898 274637 3556 0 3 0x82 nanoslp syz-executor 14169 516098 3556 0 3 0x82 nanoslp syz-executor 67510 341308 3556 0 2 0x2 syz-executor 64893 193699 3556 0 3 0x82 nanoslp syz-executor 93714 448119 3556 0 3 0x82 nanoslp syz-executor 10672 507672 3556 0 2 0x2 syz-executor 3556 400948 47553 0 3 0x82 kqread syz-executor 47553 372195 82552 0 3 0x10008a sigsusp ksh 82552 161801 97213 0 3 0x98 kqread sshd-session 97213 57823 19982 0 3 0x92 kqread sshd-session 85940 402826 1 0 3 0x100083 ttyin getty 19982 83582 1 0 3 0x88 kqread sshd 89834 233706 57256 73 3 0x1100090 kqread syslogd 57256 175635 1 0 3 0x100082 sbwait syslogd 86899 53997 1 0 3 0x100080 kqread resolvd 45961 111063 66688 77 3 0x100092 kqread dhcpleased 66864 317764 66688 77 3 0x100092 kqread dhcpleased 66688 29792 1 0 3 0x80 kqread dhcpleased 27587 146969 0 0 3 0x14200 bored smr 77247 304921 0 0 2 0x14200 zerothread 9048 27432 0 0 3 0x14200 aiodoned aiodoned 2764 476536 0 0 3 0x14200 syncer update 34270 359349 0 0 3 0x14200 cleaner cleaner 17368 161102 0 0 3 0x14200 reaper reaper 93099 460372 0 0 3 0x14200 pgdaemon pagedaemon 80736 362382 0 0 3 0x14200 bored viomb 43629 78611 0 0 3 0x40014200 acpi0 acpi0 69596 17144 0 0 3 0x14200 bored softnet7 70429 523102 0 0 3 0x14200 bored softnet6 2184 450808 0 0 3 0x14200 bored softnet5 13543 417799 0 0 3 0x14200 bored softnet4 71093 175248 0 0 3 0x14200 bored softnet3 53008 163962 0 0 3 0x14200 bored softnet2 39836 497881 0 0 3 0x14200 bored softnet1 15217 393832 0 0 3 0x14200 bored softnet0 37380 411576 0 0 3 0x14200 bored systqmp 16778 17338 0 0 3 0x14200 bored systq 7463 340589 0 0 3 0x40014200 tmoslp softclock 825 462843 0 0 3 0x40014200 idle0 1 113895 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 10179 11042K 11258K 166960K 11597 0 pcb 17 12K 12K 166960K 69 0 rtable 208 7K 7K 166960K 299 0 pf 31 13K 13K 166960K 36 0 ifaddr 41 7K 7K 166960K 47 0 ifgroup 50 2K 2K 166960K 57 0 sysctl 4 1K 9K 166960K 11 0 counters 32 17K 17K 166960K 36 0 ioctlops 0 0K 4K 166960K 47 0 iov 0 0K 24K 166960K 14 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1372 86K 87K 166960K 1493 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 6 0K 0K 166960K 7 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 14 49K 97K 166960K 326 0 sigio 0 0K 0K 166960K 70 0 proc 60 59K 124K 166960K 515 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 34 0 in_multi 95 7K 7K 166960K 106 0 ether_multi 1 0K 0K 166960K 2 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 73 334K 334K 166960K 73 0 exec 0 0K 1K 166960K 356 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 205 142K 161K 166960K 4474 0 UVM aobj 10 2K 2K 166960K 11 0 pinsyscall 35 70K 96K 166960K 1348 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 15 0 NDP 11 0K 2K 166960K 29 0 temp 50 8633K 8709K 166960K 15640 0 kqueue 13 20K 34K 166960K 69 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 120 118 0 115 3 0 3 3 0 8 2 rtentry 136 101 0 10 4 0 4 4 0 8 0 unpcb 144 260 0 243 2 0 2 2 0 8 1 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 94 0 90 4 0 4 4 0 8 3 arp 96 12 0 1 1 0 1 1 0 8 0 ipq 40 3 0 0 1 0 1 1 0 8 0 ipqe 40 3 0 0 1 0 1 1 0 8 0 inpcb 328 277 0 270 4 0 4 4 0 8 3 ip6q 72 2 0 1 1 0 1 1 0 8 0 ip6af 40 3 0 2 1 0 1 1 0 8 0 nd6 104 17 0 1 1 0 1 1 0 8 0 pkpcb 40 3 0 3 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 3 0 3 1 0 1 1 0 8 1 pppxif 1384 1 0 1 1 0 1 1 0 8 1 pfrktable 1344 1 0 1 1 0 1 1 0 8 1 pfstkey 128 3 0 3 1 0 1 1 0 8 1 pfstate 384 2 0 2 1 0 1 1 0 8 1 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 478 0 55 29 0 29 29 0 8 1 art_table 40 480 0 55 5 0 5 5 0 8 0 art_node 32 101 0 19 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 1 1 0 1 1 0 8 0 semapl 112 4 0 0 1 0 1 1 0 8 0 shmpl 112 8 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1883 0 381 95 0 95 95 0 8 0 ffsino 256 1884 0 381 95 0 95 95 0 8 0 nchpl 144 2366 0 689 63 0 63 63 0 8 0 rtmask 32 1 0 1 1 0 1 1 0 8 1 uvmvnodes 80 2058 0 0 42 0 42 42 0 8 0 vnodes 216 2058 0 0 115 0 115 115 0 8 0 namei 1024 7617 0 7613 2 0 2 2 0 8 1 kstatmem 264 26 0 4 2 0 2 2 0 8 0 scxspl 216 8288 0 8288 8 0 8 8 1 8 8 plimitpl 152 50 0 34 1 0 1 1 0 8 0 sigapl 424 608 0 561 7 0 7 7 0 8 1 knotepl 120 11656 0 11609 16 5 11 16 0 8 8 kqueuepl 184 76 0 67 1 0 1 1 0 8 0 pipepl 304 126 0 99 3 0 3 3 0 8 0 fdescpl 448 587 0 561 5 0 5 5 0 8 1 filepl 120 2881 0 2670 9 0 9 9 0 8 2 lockfpl 104 79 0 77 1 0 1 1 0 8 0 lockfspl 48 37 0 35 1 0 1 1 0 8 0 sessionpl 144 21 0 13 1 0 1 1 0 8 0 pgrppl 48 31 0 15 1 0 1 1 0 8 0 ucredpl 104 261 0 250 1 0 1 1 0 8 0 zombiepl 144 562 0 561 1 0 1 1 0 8 0 processpl 1152 608 0 561 5 0 5 5 0 8 1 procpl 664 923 0 868 6 0 6 6 0 8 1 sosppl 168 1 0 1 1 0 1 1 0 8 1 sockpl 552 670 0 643 7 0 7 7 0 8 5 mcl64k 65536 14 0 14 1 0 1 1 0 8 1 mcl12k 12288 1 0 1 1 0 1 1 0 8 1 mcl9k 9216 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 6 0 6 1 0 1 1 0 8 1 mcl4k 4096 2683 0 2631 13 0 13 13 0 8 5 mcl2k 2048 677 0 673 2 0 2 2 0 8 1 mtagpl 96 5 0 4 1 0 1 1 0 8 0 mbufpl 256 6180 0 6022 16 0 16 16 0 8 3 bufpl 280 3429 0 119 237 0 237 237 0 8 0 anonpl 24 107101 0 104167 23 0 23 23 0 187 1 amapchunkpl 152 13786 0 13376 26 0 26 26 0 158 8 amappl16 200 1882 0 1850 5 0 5 5 0 8 3 amappl15 192 9 0 9 1 0 1 1 0 8 1 amappl14 184 102 0 92 1 0 1 1 0 8 0 amappl13 176 8 0 8 1 0 1 1 0 8 1 amappl12 168 1197 0 1171 3 0 3 3 0 8 1 amappl11 160 48 0 38 1 0 1 1 0 8 0 amappl10 152 7 0 7 1 0 1 1 0 8 1 amappl9 144 278 0 278 1 0 1 1 0 8 1 amappl8 136 22 0 21 1 0 1 1 0 8 0 amappl7 128 101 0 91 1 0 1 1 0 8 0 amappl6 120 168 0 165 1 0 1 1 0 8 0 amappl5 112 109 0 103 1 0 1 1 0 8 0 amappl4 104 275 0 260 1 0 1 1 0 8 0 amappl3 96 2235 0 2157 3 0 3 3 0 8 0 amappl2 88 810 0 741 2 0 2 2 0 8 0 amappl1 80 8524 0 7997 13 0 13 13 0 8 1 amappl 88 3817 0 3676 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 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 10 0 1 1 0 1 1 0 8 0 uaddrrnd 24 587 0 561 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 587 0 561 1 0 1 1 0 8 0 vmmpekpl 168 6178 0 6150 2 0 2 2 0 8 0 vmmpepl 168 42577 0 40900 84 0 84 84 0 357 4 vmsppl 368 586 0 561 4 0 4 4 0 8 1 rwobjpl 40 15796 0 12910 30 0 30 30 0 8 0 pdppl 4096 1180 0 1122 96 34 62 82 0 8 4 pvpl 32 267905 0 260275 85 0 85 85 0 265 8 pmappl 216 586 0 561 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 373 0 34 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff80003c996558,ffffffffffffffff,0,a0c7df9b,fffffd805e1928c0,fffffd8007bfba28) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c996558,ffffffffffffffff,0,a0c7df9b,fffffd805e1928c0,fffffd8007bfba28) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd805e1928c0,4,20c7df9b,0,ffff80003c996558) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd805e1928c0,4,20c7df9b,0,ffff80003c996558) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003c996558,ffff80003c99d7c0,ffff80003c99d710) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c99d7c0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c99d7c0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x181f9f02e00, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff80003c996558,ffffffffffffffff,0,a0c7df9b,fffffd805e1928c0,fffffd8007bfba28) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c996558,ffffffffffffffff,0,a0c7df9b,fffffd805e1928c0,fffffd8007bfba28) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd805e1928c0,4,20c7df9b,0,ffff80003c996558) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd805e1928c0,4,20c7df9b,0,ffff80003c996558) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003c996558,ffff80003c99d7c0,ffff80003c99d710) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c99d7c0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c99d7c0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x181f9f02e00, count: -5