uvm_fault(0xfffffd8079bdda28, 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 *306464 83863 0 0 0x4000000 0 syz-executor ktrops(ffff80003c93b4e0,ffffffffffffffff,0,a0c7df9f,fffffd806c8e45e8,fffffd8007bfd680) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c93b4e0,ffffffffffffffff,0,a0c7df9f,fffffd806c8e45e8,fffffd8007bfd680) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806c8e45e8,4,20c7df9f,0,ffff80003c93b4e0) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806c8e45e8,4,20c7df9f,0,ffff80003c93b4e0) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003c93b4e0,ffff80003c975dc0,ffff80003c975d10) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c975dc0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c975dc0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x95b94262e90, 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(0xfffffd8079bdda28, 0xf, 0, 1) -> e ddb> trace ktrops(ffff80003c93b4e0,ffffffffffffffff,0,a0c7df9f,fffffd806c8e45e8,fffffd8007bfd680) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c93b4e0,ffffffffffffffff,0,a0c7df9f,fffffd806c8e45e8,fffffd8007bfd680) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806c8e45e8,4,20c7df9f,0,ffff80003c93b4e0) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806c8e45e8,4,20c7df9f,0,ffff80003c93b4e0) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003c93b4e0,ffff80003c975dc0,ffff80003c975d10) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c975dc0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c975dc0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x95b94262e90, count: -5 ddb> show registers rdi 0xffff80003c93b4e0 rsi 0xffffffffffffffff rbp 0xffff80003c975ae0 rbx 0xfffffd8007bfd680 rdx 0 rcx 0xa0c7df9f rax 0xffff80003c93b4e0 r8 0xfffffd806c8e45e8 r9 0xfffffd8007bfd680 r10 0xcee7d03512c8f198 r11 0xc059e2470b3d00c4 r12 0xffff80003c93b4e0 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0xa0c7df9f rip 0xffffffff8148b878 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c975a60 ss 0x10 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=306464 pid=83863 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=0xffff80002a8c4560,0xffffffff83896c00 process=0xffff8000ffff9218 user=0xffff80003c970000, vmspace=0xfffffd8079bdda28 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 83863 132054 40399 0 2 0 syz-executor *83863 306464 40399 0 7 0x4000000 syz-executor 78628 247342 26680 0 2 0 syz-executor 78628 222639 26680 0 3 0x4000080 fsleep syz-executor 46624 322554 79908 0 2 0 syz-executor 46624 288730 79908 0 2 0x4000000 syz-executor 2197 313129 94949 0 2 0 syz-executor 2197 484499 94949 0 3 0x4000080 fsleep syz-executor 72113 56255 13010 60929 2 0x10 syz-executor 72113 9045 13010 60929 3 0x4000090 fsleep syz-executor 72113 230852 13010 60929 3 0x4000090 fsleep syz-executor 32263 44223 219 0 3 0x80 nanoslp syz-executor 32263 155895 219 0 3 0x4000080 kqsel syz-executor 32263 8005 219 0 3 0x4000080 fsleep syz-executor 32263 21892 219 0 3 0x4000080 fsleep syz-executor 49519 521785 1 0 3 0x100083 ttyin getty 48546 102067 15911 0 2 0x2 syz-executor 219 18900 15911 0 2 0xc82 syz-executor 13010 426479 15911 0 2 0xc82 syz-executor 79908 89998 15911 0 3 0x82 nanoslp syz-executor 29890 487446 15911 0 2 0x2 syz-executor 26680 497610 15911 0 3 0x82 nanoslp syz-executor 40399 251827 15911 0 3 0x82 nanoslp syz-executor 94949 145672 15911 0 3 0x82 nanoslp syz-executor 15911 13810 85539 0 3 0x82 kqread syz-executor 85539 88298 80956 0 3 0x10008a sigsusp ksh 80956 364890 89435 0 3 0x98 kqread sshd-session 89435 263384 52267 0 3 0x92 kqread sshd-session 52267 347935 1 0 3 0x88 kqread sshd 34482 347134 16363 73 3 0x1100090 kqread syslogd 16363 91791 1 0 3 0x100082 sbwait syslogd 78598 117396 1 0 3 0x100080 kqread resolvd 74391 61505 21977 77 3 0x100092 kqread dhcpleased 2458 398798 21977 77 3 0x100092 kqread dhcpleased 21977 371101 1 0 3 0x80 kqread dhcpleased 25926 295368 0 0 3 0x14200 bored smr 85012 366368 0 0 2 0x14200 zerothread 48304 46419 0 0 3 0x14200 aiodoned aiodoned 74939 242440 0 0 3 0x14200 syncer update 54689 130844 0 0 3 0x14200 cleaner cleaner 77111 90308 0 0 3 0x14200 reaper reaper 33 330915 0 0 3 0x14200 pgdaemon pagedaemon 45924 10752 0 0 3 0x14200 bored viomb 23889 220003 0 0 3 0x40014200 acpi0 acpi0 94976 472713 0 0 3 0x14200 bored softnet0 82813 52552 0 0 3 0x14200 bored systqmp 34961 208511 0 0 3 0x14200 bored systq 11475 343829 0 0 3 0x40014200 tmoslp softclock 64216 311045 0 0 3 0x40014200 idle0 1 437314 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 11088 12319K 12500K 166960K 13382 0 pcb 18 14K 16K 166960K 275 0 rtable 207 8K 9K 166960K 574 0 pf 31 13K 14K 166960K 89 0 ifaddr 34 5K 7K 166960K 79 0 ifgroup 47 1K 2K 166960K 117 0 sysctl 4 1K 9K 166960K 20 0 counters 33 17K 18K 166960K 128 0 ioctlops 0 0K 4K 166960K 329 0 iov 0 0K 32K 166960K 43 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1406 88K 89K 166960K 2119 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 6K 10K 166960K 28 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 32 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 97K 166960K 1063 0 sigio 0 0K 0K 166960K 17 0 proc 63 67K 108K 166960K 611 0 subproc 72 4K 4K 166960K 82 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 108 0 in_multi 66 4K 7K 166960K 147 0 ether_multi 1 0K 0K 166960K 11 0 mrt 0 0K 0K 166960K 11 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 217 970K 970K 166960K 217 0 exec 0 0K 1K 166960K 479 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 227 160K 177K 166960K 11159 0 UVM aobj 100 7K 9K 166960K 107 0 pinsyscall 37 74K 94K 166960K 2202 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 0K 166960K 52 0 NDP 11 0K 2K 166960K 50 0 temp 78 8672K 8926K 166960K 36561 0 kqueue 15 24K 32K 166960K 190 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 120 183 0 179 1 0 1 1 0 8 0 rtentry 136 144 0 68 4 0 4 4 0 8 0 unpcb 144 672 0 657 7 6 1 7 0 8 0 syncache 336 9 0 9 2 1 1 1 0 8 1 tcpcb 736 339 0 335 10 3 7 7 0 8 6 arp 96 22 0 8 1 0 1 1 0 8 0 ipq 40 11 0 7 1 0 1 1 0 8 0 ipqe 40 20 0 16 1 0 1 1 0 8 0 inpcb 328 906 0 897 11 4 7 7 0 8 5 ip6q 72 2 0 2 1 1 0 1 0 8 0 ip6af 40 4 0 4 1 1 0 1 0 8 0 nd6 112 33 0 14 1 0 1 1 0 8 0 pkpcb 40 7 0 7 1 0 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1072 86 0 86 2 1 1 1 0 8 1 pppxif 1384 3 0 3 2 1 1 1 0 8 1 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 4 0 0 1 0 1 1 0 8 0 pfstkey 128 4 0 1 1 0 1 1 0 8 0 pfstate 384 2 0 0 1 0 1 1 0 8 0 pfrule 1344 2 0 2 1 0 1 1 0 8 1 rttmr 136 2 0 2 2 1 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 586 0 285 29 3 26 29 0 8 4 art_table 40 589 0 285 5 0 5 5 0 8 0 art_node 32 143 0 75 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 3 1 0 1 1 0 8 0 semapl 112 26 0 16 1 0 1 1 0 8 0 shmpl 112 100 0 5 3 0 3 3 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 3225 0 1723 95 0 95 95 0 8 0 ffsino 256 3225 0 1723 95 0 95 95 0 8 0 nchpl 144 4664 0 2970 65 1 64 64 0 8 1 rtmask 32 3 0 3 1 1 0 1 0 8 0 vnodes 216 3751 0 0 209 0 209 209 0 8 0 namei 1024 14681 0 14680 3 2 1 2 0 8 0 vcpupl 3904 2 0 0 1 0 1 1 0 8 0 vmpool 808 4 0 2 1 0 1 1 0 8 0 kstatmem 264 64 0 42 2 0 2 2 0 8 0 scsiplug 72 2 0 2 2 1 1 1 0 8 1 scxspl 216 16893 0 16893 10 7 3 8 1 8 3 plimitpl 152 276 0 259 1 0 1 1 0 8 0 sigapl 424 1364 0 1323 7 1 6 6 0 8 1 knotepl 120 38682 0 38628 17 7 10 10 0 8 7 kqueuepl 184 323 0 312 1 0 1 1 0 8 0 pipepl 304 191 0 163 3 0 3 3 0 8 0 fdescpl 448 1344 0 1316 5 1 4 5 0 8 0 filepl 120 7190 0 6968 16 3 13 13 0 8 5 lockfpl 104 251 0 247 1 0 1 1 0 8 0 lockfspl 48 109 0 105 1 0 1 1 0 8 0 sessionpl 144 32 0 24 1 0 1 1 0 8 0 pgrppl 48 53 0 37 1 0 1 1 0 8 0 ucredpl 104 893 0 881 1 0 1 1 0 8 0 zombiepl 144 1548 0 1548 1 0 1 1 0 8 1 processpl 1152 1364 0 1323 4 0 4 4 0 8 0 procpl 664 2665 0 2615 7 1 6 6 0 8 1 sosppl 176 4 0 4 2 1 1 1 0 8 1 sockpl 552 1787 0 1759 20 13 7 15 0 8 4 mcl64k 65536 72 0 72 2 1 1 1 0 8 1 mcl16k 16384 6 0 6 2 1 1 1 0 8 1 mcl12k 12288 1 0 1 1 0 1 1 0 8 1 mcl9k 9216 3 0 3 2 1 1 1 0 8 1 mcl8k 8192 13 0 13 2 1 1 1 0 8 1 mcl4k 4096 3735 0 3680 15 7 8 15 0 8 0 mcl2k2 2112 3 0 3 1 0 1 1 0 8 1 mcl2k 2048 1642 0 1637 2 0 2 2 0 8 1 mtagpl 96 35 0 14 1 0 1 1 0 8 0 mbufpl 256 14748 0 14576 75 53 22 75 0 8 8 bufpl 280 5525 0 130 386 0 386 386 0 8 0 anonpl 24 214896 0 211818 66 21 45 45 0 187 21 amapchunkpl 152 37742 0 37182 39 5 34 34 0 158 12 amappl16 200 3836 0 3802 30 18 12 15 0 8 8 amappl15 192 1 0 1 1 1 0 1 0 8 0 amappl14 184 5 0 5 1 1 0 1 0 8 0 amappl13 176 418 0 417 1 0 1 1 0 8 0 amappl12 168 1712 0 1675 2 0 2 2 0 8 0 amappl11 160 4 0 4 1 1 0 1 0 8 0 amappl10 152 50 0 40 1 0 1 1 0 8 0 amappl9 144 271 0 271 1 1 0 1 0 8 0 amappl8 136 23 0 21 1 0 1 1 0 8 0 amappl7 128 107 0 105 1 0 1 1 0 8 0 amappl6 120 284 0 273 1 0 1 1 0 8 0 amappl5 112 70 0 62 1 0 1 1 0 8 0 amappl4 104 420 0 394 1 0 1 1 0 8 0 amappl3 96 7268 0 7170 3 0 3 3 0 8 0 amappl2 88 592 0 536 2 0 2 2 0 8 0 amappl1 80 14113 0 13574 14 1 13 13 0 8 0 amappl 88 10253 0 10097 6 1 5 5 0 92 0 uvmvnodes 80 125 0 0 3 0 3 3 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 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 7 0 7 2 1 1 1 0 8 1 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 72 106 0 7 2 0 2 2 0 8 0 uaddrrnd 24 1344 0 1316 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1344 0 1316 1 0 1 1 0 8 0 vmmpekpl 168 11850 0 11806 3 0 3 3 0 8 0 vmmpepl 168 90766 0 89024 99 8 91 91 0 357 9 vmsppl 368 1343 0 1316 4 1 3 4 0 8 0 rwobjpl 40 25543 0 24481 15 1 14 14 0 8 2 pdppl 4096 2702 0 2638 109 41 68 82 0 8 4 pvpl 32 592393 0 584059 149 34 115 115 0 265 35 pmappl 216 1347 0 1318 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 461 0 118 12 0 12 12 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff80003c93b4e0,ffffffffffffffff,0,a0c7df9f,fffffd806c8e45e8,fffffd8007bfd680) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c93b4e0,ffffffffffffffff,0,a0c7df9f,fffffd806c8e45e8,fffffd8007bfd680) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806c8e45e8,4,20c7df9f,0,ffff80003c93b4e0) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806c8e45e8,4,20c7df9f,0,ffff80003c93b4e0) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003c93b4e0,ffff80003c975dc0,ffff80003c975d10) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c975dc0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c975dc0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x95b94262e90, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff80003c93b4e0,ffffffffffffffff,0,a0c7df9f,fffffd806c8e45e8,fffffd8007bfd680) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c93b4e0,ffffffffffffffff,0,a0c7df9f,fffffd806c8e45e8,fffffd8007bfd680) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806c8e45e8,4,20c7df9f,0,ffff80003c93b4e0) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806c8e45e8,4,20c7df9f,0,ffff80003c93b4e0) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003c93b4e0,ffff80003c975dc0,ffff80003c975d10) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c975dc0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c975dc0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x95b94262e90, count: -5