uvm_fault(0xfffffd806cb298b8, 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 * 50143 12561 0 0 0x4000000 0 syz-executor ktrops(ffff80003c924d20,ffffffffffffffff,0,a0c7df9f,fffffd801959d568,fffffd8007bfd750) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c924d20,ffffffffffffffff,0,a0c7df9f,fffffd801959d568,fffffd8007bfd750) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd801959d568,4,20c7df9f,0,ffff80003c924d20) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd801959d568,4,20c7df9f,0,ffff80003c924d20) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003c924d20,ffff80003c9432b0,ffff80003c943200) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c9432b0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9432b0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd2ccee1afb0, 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(0xfffffd806cb298b8, 0xf, 0, 1) -> e ddb> trace ktrops(ffff80003c924d20,ffffffffffffffff,0,a0c7df9f,fffffd801959d568,fffffd8007bfd750) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c924d20,ffffffffffffffff,0,a0c7df9f,fffffd801959d568,fffffd8007bfd750) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd801959d568,4,20c7df9f,0,ffff80003c924d20) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd801959d568,4,20c7df9f,0,ffff80003c924d20) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003c924d20,ffff80003c9432b0,ffff80003c943200) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c9432b0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9432b0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd2ccee1afb0, count: -5 ddb> show registers rdi 0xffff80002f0f2000 rsi 0x2178 __ALIGN_SIZE+0x1178 rbp 0xffff80003c942fd0 rbx 0xfffffd8007bfd750 rdx 0xffff80002f0f2000 rcx 0x2177 __ALIGN_SIZE+0x1177 rax 0xffffffff825b9b03 ktrops+0x43 r8 0xfffffd801959d568 r9 0xfffffd8007bfd750 r10 0xdf177fe733062f01 r11 0x2a5b7fe06fd05547 r12 0xffff80003c924d20 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0xa0c7df9f rip 0xffffffff825b9b18 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c942f50 ss 0 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=50143 pid=12561 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=0xffff80003c925a18,0xffffffff83938a60 process=0xffff8000ffffa898 user=0xffff80003c93e000, vmspace=0xfffffd806cb298b8 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 12561 119826 12225 0 2 0 syz-executor *12561 50143 12225 0 7 0x4000000 syz-executor 62162 316705 29725 0 2 0 syz-executor 62162 209963 29725 0 3 0x4000080 fsleep syz-executor 5491 167224 22401 0 3 0x80 nanoslp syz-executor 5491 391122 22401 0 3 0x4000080 bpf syz-executor 5491 179072 22401 0 3 0x4000080 fsleep syz-executor 92031 121433 14791 -1 3 0x90 nanoslp syz-executor 92031 62439 14791 -1 3 0x4000090 kqread syz-executor 92031 173286 14791 -1 3 0x4000090 fsleep syz-executor 36528 37155 16502 0 3 0x80 nanoslp syz-executor 36528 470119 16502 0 3 0x4000080 kqread syz-executor 36528 125878 16502 0 3 0x4000080 fsleep syz-executor 16502 47337 39673 0 2 0xc82 syz-executor 64075 282430 39673 0 3 0x82 nanoslp syz-executor 14791 369796 39673 0 3 0x82 nanoslp syz-executor 92142 12985 1 0 3 0x100083 ttyopn getty 29725 522440 39673 0 2 0xc82 syz-executor 22401 121312 39673 0 3 0x82 nanoslp syz-executor 42967 34679 39673 0 2 0x2 syz-executor 12225 116509 39673 0 2 0xc82 syz-executor 80026 452335 39673 0 3 0x82 wait syz-executor 39673 381819 14435 0 2 0x2 syz-executor 14435 21621 6495 0 3 0x10008a sigsusp ksh 6495 45327 68512 0 3 0x98 kqread sshd-session 68512 216689 35308 0 3 0x92 kqread sshd-session 35308 129269 1 0 3 0x88 kqread sshd 39175 395914 19126 73 3 0x1100090 kqread syslogd 19126 71773 1 0 3 0x100082 sbwait syslogd 77784 54524 1 0 3 0x100080 kqread resolvd 91220 63258 65030 77 3 0x100092 kqread dhcpleased 6280 285108 65030 77 3 0x100092 kqread dhcpleased 65030 47850 1 0 3 0x80 kqread dhcpleased 14137 56501 0 0 3 0x14200 bored smr 32135 469306 0 0 2 0x14200 zerothread 93880 12394 0 0 3 0x14200 aiodoned aiodoned 46745 363845 0 0 3 0x14200 syncer update 90481 247222 0 0 3 0x14200 cleaner cleaner 84582 275717 0 0 3 0x14200 reaper reaper 93527 200266 0 0 3 0x14200 pgdaemon pagedaemon 46803 12971 0 0 3 0x14200 bored viomb 94193 205394 0 0 3 0x40014200 acpi0 acpi0 64885 106078 0 0 3 0x14200 bored softnet0 69443 487226 0 0 3 0x14200 smrbar systqmp 31107 367716 0 0 3 0x14200 bored systq 79044 58838 0 0 3 0x40014200 tmoslp softclock 29501 393694 0 0 3 0x40014200 idle0 1 407299 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11064 12220K 14360K 166960K 15822 0 pcb 17 20K 25K 166960K 654 0 rtable 157 9K 11K 166960K 861 0 pf 35 14K 18K 166960K 181 0 ifaddr 27 3K 8K 166960K 116 0 ifgroup 54 2K 2K 166960K 184 0 sysctl 4 1K 9K 166960K 82 0 counters 34 17K 18K 166960K 102 0 ioctlops 0 0K 4K 166960K 373 0 iov 0 0K 28K 166960K 97 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1616 102K 102K 166960K 3827 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 27 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 233 0 dirhash 12 2K 2K 166960K 78 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 110K 166960K 1608 0 sigio 0 0K 0K 166960K 91 0 proc 60 59K 91K 166960K 736 0 subproc 72 4K 4K 166960K 102 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 353 0 in_multi 32 2K 7K 166960K 204 0 ether_multi 1 0K 0K 166960K 19 0 mrt 0 0K 0K 166960K 5 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 91 413K 413K 166960K 91 0 exec 0 0K 1K 166960K 855 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 245 146K 164K 166960K 15905 0 UVM aobj 83 16K 18K 166960K 96 0 pinsyscall 38 76K 93K 166960K 2766 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 123 0 NDP 14 0K 2K 166960K 77 0 temp 80 8680K 8800K 166960K 87611 0 kqueue 15 24K 35K 166960K 301 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 120 157 0 153 1 0 1 1 0 8 0 rtentry 136 261 0 218 5 1 4 5 0 8 0 unpcb 144 1285 0 1270 7 5 2 6 0 8 1 syncache 336 9 0 9 1 1 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 815 0 810 16 9 7 10 0 8 6 arp 96 32 0 23 1 0 1 1 0 8 0 ipq 40 5 0 0 1 0 1 1 0 8 0 ipqe 40 6 0 1 1 0 1 1 0 8 0 inpcb 328 2082 0 2073 30 20 10 15 0 8 8 ip6q 72 18 0 17 1 0 1 1 0 8 0 ip6af 40 36 0 34 1 0 1 1 0 8 0 nd6 112 45 0 38 1 0 1 1 0 8 0 pkpcb 40 11 0 11 2 1 1 1 0 8 1 kcovpl 48 11 0 3 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1072 51 0 51 1 0 1 1 0 8 1 pppxif 1384 8 0 8 1 0 1 1 0 8 1 pfstscr 40 1 0 0 1 0 1 1 0 8 0 pfrktable 1344 10 0 8 1 0 1 1 0 8 0 pfanchor 1288 4 0 0 1 0 1 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 2 0 0 1 0 1 1 0 8 0 pfstate 384 1 0 0 1 0 1 1 0 8 0 pfrule 1360 9 0 4 1 0 1 1 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 38 0 32 38 0 38 38 0 8 32 art_heap4 256 1035 0 812 35 10 25 30 0 8 9 art_table 40 1073 0 844 5 0 5 5 0 8 0 art_node 32 258 0 220 1 0 1 1 0 8 0 sysvmsgpl 40 16 0 13 1 0 1 1 0 8 0 semupl 112 8 0 8 1 1 0 1 0 8 0 semapl 112 230 0 220 1 0 1 1 0 8 0 shmpl 112 84 0 10 3 0 3 3 0 8 0 dirhash 1024 63 0 46 3 0 3 3 0 8 0 dino2pl 256 4746 0 3243 95 0 95 95 0 8 0 ffsino 256 4746 0 3243 95 0 95 95 0 8 0 nchpl 144 6896 0 5192 64 0 64 64 0 8 0 rtmask 32 8 0 8 1 1 0 1 0 8 0 vnodes 216 6295 0 0 350 0 350 350 0 8 0 namei 1024 24727 0 24727 3 2 1 2 0 8 1 vcpupl 3904 8 0 2 1 0 1 1 0 8 0 vmpool 808 9 0 3 1 0 1 1 0 8 0 pfiaddrpl 120 5 0 0 1 0 1 1 0 8 0 kstatmem 264 108 0 84 3 1 2 3 0 8 0 scsiplug 72 5 0 5 2 1 1 1 0 8 1 scxspl 216 59762 0 59762 8 7 1 8 1 8 1 plimitpl 152 451 0 432 1 0 1 1 0 8 0 sigapl 424 1886 0 1844 7 1 6 6 0 8 1 knotepl 120 615230 0 615177 39 29 10 17 0 8 7 kqueuepl 184 520 0 509 1 0 1 1 0 8 0 pipepl 304 283 0 256 7 4 3 7 0 8 0 fdescpl 448 1872 0 1843 5 1 4 5 0 8 0 filepl 120 13690 0 13469 21 10 11 16 0 8 3 lockfpl 104 662 0 658 2 1 1 2 0 8 0 lockfspl 48 264 0 260 1 0 1 1 0 8 0 sessionpl 144 28 0 20 1 0 1 1 0 8 0 pgrppl 48 101 0 85 1 0 1 1 0 8 0 ucredpl 104 2917 0 2902 1 0 1 1 0 8 0 zombiepl 144 1846 0 1844 1 0 1 1 0 8 0 processpl 1152 1886 0 1844 4 0 4 4 0 8 0 procpl 664 4012 0 3962 6 1 5 6 0 8 0 sosppl 176 3 0 3 1 1 0 1 0 8 0 sockpl 552 3723 0 3695 31 20 11 15 0 8 8 mcl64k 65536 215 0 215 2 1 1 1 0 8 1 mcl16k 16384 9 0 9 1 1 0 1 0 8 0 mcl12k 12288 1 0 1 1 1 0 1 0 8 0 mcl8k 8192 28 0 28 2 1 1 1 0 8 1 mcl4k 4096 4434 0 4377 16 8 8 16 0 8 0 mcl2k2 2112 3 0 3 1 1 0 1 0 8 0 mcl2k 2048 1716 0 1710 5 0 5 5 0 8 3 mtagpl 96 66 0 52 1 0 1 1 0 8 0 mbufpl 256 20420 0 20286 19 4 15 18 0 8 0 bufpl 280 45047 0 37751 2925 2383 542 2925 0 8 0 anonpl 24 279848 0 265456 140 22 118 118 0 187 5 amapchunkpl 152 53547 0 52835 46 15 31 34 0 158 2 amappl16 200 5060 0 4548 51 10 41 41 0 8 0 amappl15 192 6 0 5 2 1 1 1 0 8 0 amappl14 184 6 0 6 1 1 0 1 0 8 0 amappl13 176 439 0 438 1 0 1 1 0 8 0 amappl12 168 2249 0 2211 2 0 2 2 0 8 0 amappl11 160 5 0 5 1 1 0 1 0 8 0 amappl10 152 44 0 34 1 0 1 1 0 8 0 amappl9 144 275 0 274 1 0 1 1 0 8 0 amappl8 136 24 0 22 1 0 1 1 0 8 0 amappl7 128 90 0 89 1 0 1 1 0 8 0 amappl6 120 299 0 287 1 0 1 1 0 8 0 amappl5 112 73 0 65 1 0 1 1 0 8 0 amappl4 104 409 0 385 1 0 1 1 0 8 0 amappl3 96 9299 0 9207 3 0 3 3 0 8 0 amappl2 88 1998 0 1927 2 0 2 2 0 8 0 amappl1 80 15717 0 15175 13 0 13 13 0 8 0 amappl 88 14894 0 14717 5 0 5 5 0 92 0 uvmvnodes 80 147 0 0 3 0 3 3 0 8 0 dma8192 8192 33 0 33 1 1 0 1 0 8 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 7 0 7 1 1 0 1 0 8 0 dma128 128 255 0 255 2 1 1 1 0 8 1 dma64 64 7 0 7 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 95 0 13 2 0 2 2 0 8 0 uaddrrnd 24 1872 0 1843 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1872 0 1843 1 0 1 1 0 8 0 vmmpekpl 168 15562 0 15529 2 0 2 2 0 8 0 vmmpepl 168 121967 0 119683 131 9 122 122 0 357 8 vmsppl 368 1871 0 1843 4 1 3 4 0 8 0 rwobjpl 40 31564 0 29988 19 0 19 19 0 8 0 pdppl 4096 3769 0 3698 121 44 77 81 0 8 6 pvpl 32 971474 0 951453 1515 1302 213 1390 0 265 17 pmappl 216 1880 0 1846 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 468 0 87 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff80003c924d20,ffffffffffffffff,0,a0c7df9f,fffffd801959d568,fffffd8007bfd750) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c924d20,ffffffffffffffff,0,a0c7df9f,fffffd801959d568,fffffd8007bfd750) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd801959d568,4,20c7df9f,0,ffff80003c924d20) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd801959d568,4,20c7df9f,0,ffff80003c924d20) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003c924d20,ffff80003c9432b0,ffff80003c943200) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c9432b0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9432b0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd2ccee1afb0, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff80003c924d20,ffffffffffffffff,0,a0c7df9f,fffffd801959d568,fffffd8007bfd750) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c924d20,ffffffffffffffff,0,a0c7df9f,fffffd801959d568,fffffd8007bfd750) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd801959d568,4,20c7df9f,0,ffff80003c924d20) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd801959d568,4,20c7df9f,0,ffff80003c924d20) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003c924d20,ffff80003c9432b0,ffff80003c943200) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c9432b0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9432b0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd2ccee1afb0, count: -5