uvm_fault(0xfffffd80698b16f0, 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 *370083 47634 0 0 0x4000000 0 syz-executor.1 ktrops(ffff80002a5f8568,ffffffffffffffff,0,80001808,fffffd806960c2a0,fffffd807f7d7680) at ktrops+0x4e ktrcanset sys/kern/kern_ktrace.c:718 [inline] ktrops(ffff80002a5f8568,ffffffffffffffff,0,80001808,fffffd806960c2a0,fffffd807f7d7680) at ktrops+0x4e sys/kern/kern_ktrace.c:561 doktrace(fffffd806960c2a0,4,1808,0,ffff80002a5f8568) at doktrace+0x524 ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd806960c2a0,4,1808,0,ffff80002a5f8568) at doktrace+0x524 sys/kern/kern_ktrace.c:508 sys_ktrace(ffff80002a5f8568,ffff80002f31b350,ffff80002f31b2a0) at sys_ktrace+0xd6 sys/kern/kern_ktrace.c:549 syscall(ffff80002f31b350) at syscall+0x751 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa0ea7207350, 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(0xfffffd80698b16f0, 0x7, 0, 1) -> e ddb> trace ktrops(ffff80002a5f8568,ffffffffffffffff,0,80001808,fffffd806960c2a0,fffffd807f7d7680) at ktrops+0x4e ktrcanset sys/kern/kern_ktrace.c:718 [inline] ktrops(ffff80002a5f8568,ffffffffffffffff,0,80001808,fffffd806960c2a0,fffffd807f7d7680) at ktrops+0x4e sys/kern/kern_ktrace.c:561 doktrace(fffffd806960c2a0,4,1808,0,ffff80002a5f8568) at doktrace+0x524 ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd806960c2a0,4,1808,0,ffff80002a5f8568) at doktrace+0x524 sys/kern/kern_ktrace.c:508 sys_ktrace(ffff80002a5f8568,ffff80002f31b350,ffff80002f31b2a0) at sys_ktrace+0xd6 sys/kern/kern_ktrace.c:549 syscall(ffff80002f31b350) at syscall+0x751 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa0ea7207350, count: -5 ddb> show registers rdi 0xffff80002db0c000 rsi 0xca4 rbp 0xffff80002f31b070 rbx 0xffffffffffffffff rdx 0xffff80002db0c000 rcx 0xca3 rax 0xffffffff816d5ca3 ktrops+0x43 r8 0xfffffd806960c2a0 r9 0xfffffd807f7d7680 r10 0xcd932561442cf758 r11 0x36f560566c1fdf81 r12 0xffffffffffffffff r13 0xfffffd807f7d7680 r14 0xffff80002a5f8568 r15 0x80001808 __kernel_virt_to_phys+0x1808 rip 0xffffffff816d5cae ktrops+0x4e cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002f31aff0 ss 0x10 ktrops+0x4e: movq 0x8(%rbx),%r14 ddb> show proc PROC (syz-executor.1) tid=370083 pid=47634 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=83, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a698550,0xffff80002a63e828 process=0xffff8000ffff4cb0 user=0xffff80002f316000, vmspace=0xfffffd80698b16f0 estcpu=33, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 47634 367571 25878 0 3 0x80 fsleep syz-executor.1 *47634 370083 25878 0 7 0x4000000 syz-executor.1 34621 257585 98974 0 3 0x3000 suspend syz-executor.5 34621 124603 98974 0 2 0x4081000 syz-executor.5 22044 199643 50966 0 2 0x4081000 syz-executor.3 22044 283228 50966 0 3 0x4003000 suspend syz-executor.3 34948 84563 56909 0 2 0x2 syz-executor.7 4867 58564 56909 0 2 0x2 syz-executor.0 41255 30603 56909 0 2 0x2 syz-executor.2 50966 175488 56909 0 3 0x82 nanoslp syz-executor.3 62195 411509 56909 0 2 0x2 syz-executor.4 95210 116317 1 0 3 0x100083 ttyin getty 25878 240814 56909 0 3 0x82 nanoslp syz-executor.1 76540 491794 0 0 3 0x14280 nfsidl nfsio 11869 177896 0 0 3 0x14280 nfsidl nfsio 89796 140899 0 0 3 0x14280 nfsidl nfsio 25370 424914 0 0 3 0x14280 nfsidl nfsio 60859 57881 0 0 3 0x14280 nfsidl nfsio 4735 315892 0 0 3 0x14280 nfsidl nfsio 49405 515101 0 0 3 0x14280 nfsidl nfsio 31 18736 0 0 3 0x14280 nfsidl nfsio 92534 403784 0 0 3 0x14280 nfsidl nfsio 87662 362449 0 0 3 0x14280 nfsidl nfsio 39803 490991 0 0 3 0x14280 nfsidl nfsio 96738 146959 0 0 3 0x14280 nfsidl nfsio 19995 266628 0 0 3 0x14280 nfsidl nfsio 93010 118052 0 0 3 0x14280 nfsidl nfsio 85639 122952 0 0 3 0x14280 nfsidl nfsio 13583 310903 0 0 3 0x14280 nfsidl nfsio 80141 74240 0 0 3 0x14280 nfsidl nfsio 34830 490863 0 0 3 0x14280 nfsidl nfsio 62079 322289 0 0 3 0x14280 nfsidl nfsio 71760 474932 0 0 3 0x14280 nfsidl nfsio 98974 382810 56909 0 3 0x82 nanoslp syz-executor.5 41271 87580 56909 0 2 0x2 syz-executor.6 17891 471112 0 0 3 0x14200 bored sosplice 56909 311839 24974 0 3 0x2000082 wait syz-fuzzer 56909 260901 24974 0 3 0x6000082 nanoslp syz-fuzzer 56909 281563 24974 0 3 0x6000082 wait syz-fuzzer 56909 315617 24974 0 3 0x6000082 wait syz-fuzzer 56909 456309 24974 0 3 0x6000082 thrsleep syz-fuzzer 56909 233797 24974 0 3 0x6000082 wait syz-fuzzer 56909 203285 24974 0 3 0x6000082 thrsleep syz-fuzzer 56909 227675 24974 0 3 0x6000082 thrsleep syz-fuzzer 56909 133625 24974 0 3 0x6000082 wait syz-fuzzer 56909 342276 24974 0 3 0x6000082 thrsleep syz-fuzzer 56909 126113 24974 0 3 0x6000082 kqread syz-fuzzer 56909 517340 24974 0 3 0x6000082 wait syz-fuzzer 56909 377552 24974 0 3 0x6000082 wait syz-fuzzer 56909 469909 24974 0 3 0x6000082 wait syz-fuzzer 24974 189335 87712 0 3 0x10008a sigsusp ksh 87712 415545 56871 0 3 0x9a kqread sshd 56871 454343 1 0 3 0x88 kqread sshd 59004 456485 78173 73 2 0x1100090 syslogd 78173 189783 1 0 3 0x100082 netio syslogd 89331 249999 1 0 3 0x100080 kqread resolvd 12340 124331 6313 77 3 0x100092 kqread dhcpleased 25832 108947 6313 77 3 0x100092 kqread dhcpleased 6313 502990 1 0 3 0x80 kqread dhcpleased 98556 332007 0 0 3 0x14200 bored smr 91104 490070 0 0 2 0x14200 zerothread 73990 189185 0 0 3 0x14200 aiodoned aiodoned 84547 189237 0 0 3 0x14200 syncer update 24059 192322 0 0 3 0x14200 cleaner cleaner 36213 173910 0 0 3 0x14200 reaper reaper 25068 101169 0 0 3 0x14200 pgdaemon pagedaemon 34389 173547 0 0 3 0x14200 bored viomb 48632 184198 0 0 3 0x40014200 acpi0 acpi0 54806 220868 0 0 3 0x14200 bored softnet3 89379 326995 0 0 3 0x14200 bored softnet2 23783 404366 0 0 3 0x14200 bored softnet1 56165 198166 0 0 2 0x14200 softnet0 38436 364963 0 0 3 0x14200 bored systqmp 55688 25714 0 0 3 0x14200 bored systq 75607 295861 0 0 2 0x40014200 softclock 59086 435493 0 0 3 0x40014200 idle0 1 302968 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 10211 6438K 14884K 166960K 54473 0 pcb 15 18K 20K 166960K 1149 0 rtable 190 13K 15K 166960K 1197 0 pf 31 9K 9K 166960K 150 0 ifaddr 37 10K 12K 166960K 157 0 ifgroup 54 2K 2K 166960K 235 0 sysctl 3 0K 0K 166960K 3 0 counters 31 17K 17K 166960K 84 0 ioctlops 0 0K 2K 166960K 3917 0 iov 0 0K 20K 166960K 1485 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1474 92K 92K 166960K 29195 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 17K 166960K 363 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 2566 0 dirhash 12 2K 3K 166960K 108 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 13 45K 73K 166960K 28624 0 sigio 0 0K 0K 166960K 1898 0 proc 62 59K 99K 166960K 1329 0 subproc 104 6K 6K 166960K 325 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 1261 0 in_multi 73 5K 7K 166960K 422 0 ether_multi 2 0K 0K 166960K 18 0 mrt 2 0K 0K 166960K 11 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 229 1023K 1023K 166960K 229 0 exec 0 0K 1K 166960K 922 0 pfkey data 0 0K 4K 166960K 98 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 372 89K 93K 166960K 271627 0 UVM aobj 131 4K 4K 166960K 146 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 294 0 NDP 12 0K 2K 166960K 116 0 temp 74 6764K 7400K 166960K 146070 0 kqueue 13 20K 30K 166960K 4097 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 120 315 0 312 1 0 1 1 0 8 0 rtentry 112 310 0 225 6 2 4 4 0 8 0 unpcb 144 10758 0 10745 29 22 7 7 0 8 6 syncache 336 195 0 195 3 2 1 1 0 8 1 tcpqe 32 382 0 382 3 2 1 1 0 8 1 tcpcb 808 4949 0 4940 28 20 8 11 0 8 6 arp 88 52 0 38 1 0 1 1 0 8 0 inpcb 360 11337 0 11327 51 41 10 13 0 8 8 nd6 104 76 0 60 1 0 1 1 0 8 0 pkpcb 40 42 0 42 4 3 1 1 0 8 1 kcovpl 48 25 0 17 1 0 1 1 0 8 0 ppxss 1072 22 0 22 3 2 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1240 0 883 39 11 28 29 0 8 2 art_table 32 1241 0 883 5 1 4 4 0 8 0 art_node 16 301 0 223 1 0 1 1 0 8 0 sysvmsgpl 40 39 0 39 1 1 0 1 0 8 0 semapl 112 2564 0 2554 1 0 1 1 0 8 0 shmpl 112 143 0 15 4 0 4 4 0 8 0 dirhash 1024 81 0 64 3 0 3 3 0 8 0 dino2pl 256 45058 0 43497 98 0 98 98 0 8 0 ffsino 240 45058 0 43497 92 0 92 92 0 8 0 nchpl 144 80259 0 78604 63 0 63 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 258011 0 258010 36 34 2 2 0 8 1 vcpupl 2048 6 0 1 1 0 1 1 0 8 0 vmpool 664 15 0 10 2 1 1 1 0 8 0 kstatmem 264 130 0 106 3 1 2 2 0 8 0 scxspl 216 209471 0 209471 13 11 2 8 1 8 2 plimitpl 152 565 0 550 1 0 1 1 0 8 0 sigapl 424 28974 0 28913 9 1 8 8 0 8 0 futexpl 64 195223 0 195222 5 4 1 1 0 8 0 knotepl 120 225279 0 225195 22 11 11 14 0 8 8 kqueuepl 184 7081 0 7072 10 3 7 7 0 8 6 pipepl 288 5253 0 5224 62 51 11 11 0 8 8 fdescpl 432 28876 0 28852 4 0 4 4 0 8 0 filepl 120 170316 0 170043 95 80 15 15 0 8 6 lockfpl 104 6223 0 6220 2 0 2 2 0 8 1 lockfspl 48 2770 0 2767 1 0 1 1 0 8 0 sessionpl 144 42 0 26 1 0 1 1 0 8 0 pgrppl 48 1056 0 1040 1 0 1 1 0 8 0 ucredpl 104 57523 0 57457 2 0 2 2 0 8 0 zombiepl 144 28915 0 28913 6 5 1 1 0 8 0 processpl 1072 28974 0 28913 5 0 5 5 0 8 0 procpl 680 76871 0 76793 11 2 9 9 0 8 1 sosppl 168 194 0 194 5 4 1 1 0 8 1 sockpl 488 22456 0 22430 266 253 13 26 0 8 8 mcl64k 65536 491 0 491 24 23 1 1 0 8 1 mcl16k 16384 208 0 208 9 8 1 2 0 8 1 mcl12k 12288 655 0 655 30 29 1 1 0 8 1 mcl9k 9216 289 0 289 18 17 1 1 0 8 1 mcl8k 8192 847 0 847 25 24 1 1 0 8 1 mcl4k 4096 1839 0 1839 42 41 1 1 0 8 1 mcl2k2 2112 107 0 107 7 6 1 1 0 8 1 mcl2k 2048 74933 0 74809 79 52 27 27 0 8 8 mtagpl 96 3133 0 2661 26 0 26 26 0 8 3 mbufpl 256 293734 0 293188 299 224 75 122 0 8 8 bufpl 280 39544 0 33150 458 0 458 458 0 8 0 anonpl 24 2304279 0 2295195 94 14 80 80 0 188 13 amapchunkpl 152 851669 0 851009 74 42 32 35 0 158 4 amappl16 200 39174 0 38901 66 42 24 28 0 8 8 amappl15 192 47 0 44 1 0 1 1 0 8 0 amappl14 184 204 0 191 2 1 1 2 0 8 0 amappl13 176 26 0 26 3 3 0 1 0 8 0 amappl12 168 29772 0 29745 2 0 2 2 0 8 0 amappl11 160 44 0 34 1 0 1 1 0 8 0 amappl10 152 42 0 31 1 0 1 1 0 8 0 amappl9 144 197 0 195 1 0 1 1 0 8 0 amappl8 136 643 0 511 5 0 5 5 0 8 0 amappl7 128 252 0 229 2 0 2 2 0 8 0 amappl6 120 592 0 579 1 0 1 1 0 8 0 amappl5 112 379 0 371 1 0 1 1 0 8 0 amappl4 104 777 0 750 2 1 1 2 0 8 0 amappl3 96 169729 0 169646 3 0 3 3 0 8 0 amappl2 88 29983 0 29908 3 1 2 3 0 8 0 amappl1 80 107758 0 107269 22 11 11 22 0 8 0 amappl 88 270530 0 270337 7 1 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 72 145 0 15 3 0 3 3 0 8 0 uaddrrnd 24 28891 0 28862 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 28891 0 28862 1 0 1 1 0 8 0 vmmpekpl 168 199529 0 199458 4 0 4 4 0 8 0 vmmpepl 168 1620314 0 1618330 134 27 107 109 0 357 4 vmsppl 352 28890 0 28862 22 18 4 4 0 8 1 rwobjpl 24 367823 0 360437 46 0 46 46 0 8 0 pdppl 4096 57788 0 57729 2011 1944 67 70 0 8 8 pvpl 32 7015700 0 7001073 397 240 157 337 0 265 18 pmappl 216 28890 0 28862 2 0 2 2 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 2866 0 2438 14 0 14 14 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff80002a5f8568,ffffffffffffffff,0,80001808,fffffd806960c2a0,fffffd807f7d7680) at ktrops+0x4e ktrcanset sys/kern/kern_ktrace.c:718 [inline] ktrops(ffff80002a5f8568,ffffffffffffffff,0,80001808,fffffd806960c2a0,fffffd807f7d7680) at ktrops+0x4e sys/kern/kern_ktrace.c:561 doktrace(fffffd806960c2a0,4,1808,0,ffff80002a5f8568) at doktrace+0x524 ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd806960c2a0,4,1808,0,ffff80002a5f8568) at doktrace+0x524 sys/kern/kern_ktrace.c:508 sys_ktrace(ffff80002a5f8568,ffff80002f31b350,ffff80002f31b2a0) at sys_ktrace+0xd6 sys/kern/kern_ktrace.c:549 syscall(ffff80002f31b350) at syscall+0x751 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa0ea7207350, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff80002a5f8568,ffffffffffffffff,0,80001808,fffffd806960c2a0,fffffd807f7d7680) at ktrops+0x4e ktrcanset sys/kern/kern_ktrace.c:718 [inline] ktrops(ffff80002a5f8568,ffffffffffffffff,0,80001808,fffffd806960c2a0,fffffd807f7d7680) at ktrops+0x4e sys/kern/kern_ktrace.c:561 doktrace(fffffd806960c2a0,4,1808,0,ffff80002a5f8568) at doktrace+0x524 ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd806960c2a0,4,1808,0,ffff80002a5f8568) at doktrace+0x524 sys/kern/kern_ktrace.c:508 sys_ktrace(ffff80002a5f8568,ffff80002f31b350,ffff80002f31b2a0) at sys_ktrace+0xd6 sys/kern/kern_ktrace.c:549 syscall(ffff80002f31b350) at syscall+0x751 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa0ea7207350, count: -5