uvm_fault(0xfffffd806bb6b010, 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 *119014 66294 0 0 0x4000000 0 syz-executor ktrops(ffff80002a7f54e0,ffffffffffffffff,0,a0c7df9f,fffffd807e0d3b20,fffffd8007bfb618) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7f54e0,ffffffffffffffff,0,a0c7df9f,fffffd807e0d3b20,fffffd8007bfb618) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd807e0d3b20,4,20c7df9f,0,ffff80002a7f54e0) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd807e0d3b20,4,20c7df9f,0,ffff80002a7f54e0) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7f54e0,ffff80003a56b280,ffff80003a56b1d0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003a56b280) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a56b280) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb23561d1880, 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(0xfffffd806bb6b010, 0xf, 0, 1) -> e ddb> trace ktrops(ffff80002a7f54e0,ffffffffffffffff,0,a0c7df9f,fffffd807e0d3b20,fffffd8007bfb618) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7f54e0,ffffffffffffffff,0,a0c7df9f,fffffd807e0d3b20,fffffd8007bfb618) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd807e0d3b20,4,20c7df9f,0,ffff80002a7f54e0) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd807e0d3b20,4,20c7df9f,0,ffff80002a7f54e0) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7f54e0,ffff80003a56b280,ffff80003a56b1d0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003a56b280) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a56b280) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb23561d1880, count: -5 ddb> show registers rdi 0xffff80003a56c000 rsi 0x769 rbp 0xffff80003a56afa0 rbx 0xfffffd8007bfb618 rdx 0xffff80003a56c000 rcx 0x768 rax 0xffffffff829364c3 ktrops+0x43 r8 0xfffffd807e0d3b20 r9 0xfffffd8007bfb618 r10 0x63f5e9617a9c1667 r11 0xb84f864c60d1aef4 r12 0xffff80002a7f54e0 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0xa0c7df9f rip 0xffffffff829364d8 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003a56af20 ss 0 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=119014 pid=66294 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=0xffff80002a7f5778,0xffffffff8396d698 process=0xffff8000ffff5b20 user=0xffff80003a566000, vmspace=0xfffffd806bb6b010 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 66294 52057 73854 0 2 0 syz-executor *66294 119014 73854 0 7 0x4000000 syz-executor 17110 485670 15141 0 2 0xc80 syz-executor 17110 216972 15141 0 3 0x4000080 sbwait syz-executor 17110 313402 15141 0 3 0x4000080 fsleep syz-executor 8851 146404 67054 0 2 0xc80 syz-executor 8851 219786 67054 0 3 0x4000080 piperd syz-executor 8851 6299 67054 0 3 0x4000080 fsleep syz-executor 60781 522122 38213 0 3 0x1000080 nanoslp syz-executor 60781 506523 38213 0 3 0x5000080 kqread syz-executor 74094 317125 12296 0 3 0x1000080 nanoslp syz-executor 74094 339356 12296 0 3 0x5000080 sbwait syz-executor 74094 113966 12296 0 3 0x5000080 fsleep syz-executor 58028 328481 0 0 3 0x14200 bored sosplice 73854 268107 21827 0 3 0x82 nanoslp syz-executor 67404 483331 21827 0 2 0x2 syz-executor 38213 83725 21827 0 2 0xc82 syz-executor 12296 19239 21827 0 3 0x82 nanoslp syz-executor 81393 243642 21827 0 2 0x2 syz-executor 51095 345921 21827 0 2 0x2 syz-executor 67054 27876 21827 0 3 0x82 nanoslp syz-executor 15141 179511 21827 0 2 0xc82 syz-executor 21827 148904 53180 0 3 0x82 kqread syz-executor 53180 354778 39197 0 3 0x10008a sigsusp ksh 39197 82923 48043 0 3 0x98 kqread sshd-session 48043 163982 55368 0 3 0x92 kqread sshd-session 44222 119132 1 0 3 0x100083 ttyin getty 55368 227057 1 0 3 0x88 kqread sshd 99920 281867 82447 73 3 0x1100090 kqread syslogd 82447 152335 1 0 3 0x100082 sbwait syslogd 64074 193783 1 0 3 0x100080 kqread resolvd 34253 341930 57440 77 3 0x100092 kqread dhcpleased 71694 70730 57440 77 3 0x100092 kqread dhcpleased 57440 378674 1 0 3 0x80 kqread dhcpleased 31307 403611 0 0 3 0x14200 bored smr 69837 321562 0 0 2 0x14200 zerothread 18623 391113 0 0 3 0x14200 aiodoned aiodoned 66120 75689 0 0 3 0x14200 syncer update 29020 53298 0 0 3 0x14200 cleaner cleaner 68471 239388 0 0 3 0x14200 reaper reaper 76853 229068 0 0 3 0x14200 pgdaemon pagedaemon 65024 238505 0 0 3 0x14200 bored viomb 30370 338954 0 0 3 0x40014200 acpi0 acpi0 81398 362599 0 0 3 0x14200 bored softnet7 1873 367240 0 0 3 0x14200 bored softnet6 62317 82165 0 0 3 0x14200 bored softnet5 17820 30940 0 0 3 0x14200 bored softnet4 59469 247650 0 0 3 0x14200 bored softnet3 28853 287068 0 0 3 0x14200 bored softnet2 74973 306749 0 0 3 0x14200 bored softnet1 54001 258822 0 0 2 0x14200 softnet0 90462 76953 0 0 3 0x14200 bored systqmp 57098 309509 0 0 3 0x14200 bored systq 84675 185553 0 0 3 0x40014200 tmoslp softclock 47932 44771 0 0 3 0x40014200 idle0 1 156352 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 10181 11106K 11133K 166960K 11293 0 pcb 17 12K 12K 166960K 30 0 rtable 211 6K 6K 166960K 270 0 pf 30 12K 13K 166960K 32 0 ifaddr 42 7K 7K 166960K 45 0 ifgroup 50 2K 2K 166960K 52 0 sysctl 1 1K 9K 166960K 5 0 counters 32 17K 17K 166960K 33 0 ioctlops 0 0K 4K 166960K 34 0 iov 0 0K 6K 166960K 2 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1341 84K 85K 166960K 1385 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 3 0 VM map 2 1K 1K 166960K 2 0 sem 2 0K 0K 166960K 2 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 15 53K 97K 166960K 176 0 sigio 1 0K 0K 166960K 2 0 proc 60 59K 100K 166960K 475 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 5 0 in_multi 99 7K 7K 166960K 99 0 ether_multi 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 49 228K 228K 166960K 49 0 exec 0 0K 1K 166960K 345 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 209 142K 150K 166960K 3053 0 UVM aobj 4 2K 2K 166960K 4 0 pinsyscall 36 72K 96K 166960K 1188 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 3 0 NDP 15 0K 1K 166960K 28 0 temp 35 8634K 8702K 166960K 4418 0 kqueue 16 26K 34K 166960K 33 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 39 0 36 1 0 1 1 0 8 0 rtentry 136 95 0 1 4 0 4 4 0 8 0 unpcb 144 74 0 57 2 0 2 2 0 8 1 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 11 0 6 1 0 1 1 0 8 0 arp 96 10 0 0 1 0 1 1 0 8 0 inpcb 328 113 0 102 4 0 4 4 0 8 2 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 104 16 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 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 256 435 0 0 28 0 28 28 0 8 0 art_table 40 436 0 0 5 0 5 5 0 8 0 art_node 32 95 0 11 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 1637 0 130 95 0 95 95 0 8 0 ffsino 256 1637 0 130 95 0 95 95 0 8 0 nchpl 144 1870 0 183 63 0 63 63 0 8 0 uvmvnodes 80 1733 0 0 36 0 36 36 0 8 0 vnodes 216 1733 0 0 97 0 97 97 0 8 0 namei 1024 5547 0 5545 1 0 1 1 0 8 0 kstatmem 264 24 0 2 2 0 2 2 0 8 0 scxspl 216 6746 0 6746 8 0 8 8 1 8 8 plimitpl 152 38 0 20 1 0 1 1 0 8 0 sigapl 424 455 0 407 7 0 7 7 0 8 1 knotepl 120 12672 0 12620 10 0 10 10 0 8 8 kqueuepl 184 32 0 20 1 0 1 1 0 8 0 pipepl 304 103 0 75 3 0 3 3 0 8 0 fdescpl 448 434 0 407 5 0 5 5 0 8 1 filepl 120 1626 0 1403 9 0 9 9 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 21 0 13 1 0 1 1 0 8 0 pgrppl 48 29 0 13 1 0 1 1 0 8 0 ucredpl 104 126 0 115 1 0 1 1 0 8 0 zombiepl 144 407 0 407 1 0 1 1 0 8 1 processpl 1152 455 0 407 5 0 5 5 0 8 1 procpl 664 525 0 469 6 0 6 6 0 8 0 sosppl 168 1 0 1 1 0 1 1 0 8 1 sockpl 552 227 0 196 6 0 6 6 0 8 3 mcl64k 65536 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2488 0 2424 16 0 16 16 0 8 8 mcl2k 2048 209 0 206 1 0 1 1 0 8 0 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 4151 0 3984 12 0 12 12 0 8 1 bufpl 280 3011 0 117 207 0 207 207 0 8 0 anonpl 24 86438 0 83217 23 0 23 23 0 187 0 amapchunkpl 152 8772 0 8337 21 0 21 21 0 158 0 amappl16 200 1295 0 1260 4 0 4 4 0 8 1 amappl15 192 7 0 7 1 0 1 1 0 8 1 amappl14 184 99 0 89 1 0 1 1 0 8 0 amappl13 176 8 0 7 1 0 1 1 0 8 0 amappl12 168 1034 0 1007 2 0 2 2 0 8 0 amappl11 160 43 0 33 1 0 1 1 0 8 0 amappl10 152 19 0 19 1 0 1 1 0 8 1 amappl9 144 259 0 258 1 0 1 1 0 8 0 amappl8 136 19 0 17 1 0 1 1 0 8 0 amappl7 128 92 0 82 1 0 1 1 0 8 0 amappl6 120 169 0 166 1 0 1 1 0 8 0 amappl5 112 116 0 110 1 0 1 1 0 8 0 amappl4 104 251 0 238 1 0 1 1 0 8 0 amappl3 96 1373 0 1290 3 0 3 3 0 8 0 amappl2 88 653 0 585 2 0 2 2 0 8 0 amappl1 80 8065 0 7524 13 0 13 13 0 8 0 amappl 88 2427 0 2279 4 0 4 4 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 3 0 0 1 0 1 1 0 8 0 uaddrrnd 24 434 0 407 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 434 0 407 1 0 1 1 0 8 0 vmmpekpl 168 4993 0 4960 2 0 2 2 0 8 0 vmmpepl 168 33556 0 31834 84 0 84 84 0 357 1 vmsppl 368 433 0 407 4 0 4 4 0 8 1 rwobjpl 40 13413 0 10840 27 0 27 27 0 8 0 pdppl 4096 875 0 814 97 28 69 83 0 8 8 pvpl 32 205946 0 197247 87 0 87 87 0 265 4 pmappl 216 433 0 407 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 365 0 28 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff80002a7f54e0,ffffffffffffffff,0,a0c7df9f,fffffd807e0d3b20,fffffd8007bfb618) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7f54e0,ffffffffffffffff,0,a0c7df9f,fffffd807e0d3b20,fffffd8007bfb618) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd807e0d3b20,4,20c7df9f,0,ffff80002a7f54e0) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd807e0d3b20,4,20c7df9f,0,ffff80002a7f54e0) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7f54e0,ffff80003a56b280,ffff80003a56b1d0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003a56b280) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a56b280) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb23561d1880, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff80002a7f54e0,ffffffffffffffff,0,a0c7df9f,fffffd807e0d3b20,fffffd8007bfb618) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7f54e0,ffffffffffffffff,0,a0c7df9f,fffffd807e0d3b20,fffffd8007bfb618) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd807e0d3b20,4,20c7df9f,0,ffff80002a7f54e0) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd807e0d3b20,4,20c7df9f,0,ffff80002a7f54e0) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7f54e0,ffff80003a56b280,ffff80003a56b1d0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003a56b280) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a56b280) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb23561d1880, count: -5