uvm_fault(0xfffffd807e8f02f8, 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 *202981 27999 0 0 0x4000000 0 syz-executor ktrops(ffff80003c8fa2b8,ffffffffffffffff,0,a0c7df9f,fffffd806b0c1e90,fffffd8007ffd270) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:728 [inline] ktrops(ffff80003c8fa2b8,ffffffffffffffff,0,a0c7df9f,fffffd806b0c1e90,fffffd8007ffd270) at ktrops+0x58 sys/kern/kern_ktrace.c:571 doktrace(fffffd806b0c1e90,4,20c7df9f,0,ffff80003c8fa2b8) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:596 [inline] doktrace(fffffd806b0c1e90,4,20c7df9f,0,ffff80003c8fa2b8) at doktrace+0x6bd sys/kern/kern_ktrace.c:518 sys_ktrace(ffff80003c8fa2b8,ffff800032caff00,ffff800032cafe50) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:559 syscall(ffff800032caff00) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800032caff00) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfef7f5a2120, 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(0xfffffd807e8f02f8, 0xf, 0, 1) -> e ddb> trace ktrops(ffff80003c8fa2b8,ffffffffffffffff,0,a0c7df9f,fffffd806b0c1e90,fffffd8007ffd270) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:728 [inline] ktrops(ffff80003c8fa2b8,ffffffffffffffff,0,a0c7df9f,fffffd806b0c1e90,fffffd8007ffd270) at ktrops+0x58 sys/kern/kern_ktrace.c:571 doktrace(fffffd806b0c1e90,4,20c7df9f,0,ffff80003c8fa2b8) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:596 [inline] doktrace(fffffd806b0c1e90,4,20c7df9f,0,ffff80003c8fa2b8) at doktrace+0x6bd sys/kern/kern_ktrace.c:518 sys_ktrace(ffff80003c8fa2b8,ffff800032caff00,ffff800032cafe50) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:559 syscall(ffff800032caff00) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800032caff00) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfef7f5a2120, count: -5 ddb> show registers rdi 0xffff80003c8fa2b8 rsi 0xffffffffffffffff rbp 0xffff800032cafc20 rbx 0xfffffd8007ffd270 rdx 0 rcx 0xa0c7df9f rax 0xffff80003c8fa2b8 r8 0xfffffd806b0c1e90 r9 0xfffffd8007ffd270 r10 0x75bbcaa111edf551 r11 0xecb2b3f82e69de1d r12 0xffff80003c8fa2b8 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0xa0c7df9f rip 0xffffffff820e1a38 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800032cafba0 ss 0 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=202981 pid=27999 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=71, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c8ee7f8,0xffff80003c8fbcb8 process=0xffff8000ffffa898 user=0xffff800032caa000, vmspace=0xfffffd807e8f02f8 estcpu=21, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 40381 2572 81539 0 2 0 syz-executor 8785 386305 57351 0 2 0 syz-executor 41394 163181 94464 0 2 0 syz-executor 41394 215523 94464 0 2 0x4000000 syz-executor 27999 177934 19265 0 2 0 syz-executor 27999 192559 19265 0 3 0x4000080 fsleep syz-executor *27999 202981 19265 0 7 0x4000000 syz-executor 58591 141014 64419 0 2 0x4081000 syz-executor 58591 263146 64419 0 3 0x4003000 suspend syz-executor 13627 61572 0 0 3 0x14280 nfsidl nfsio 40682 208323 0 0 3 0x14280 nfsidl nfsio 31134 5771 0 0 3 0x14280 nfsidl nfsio 4144 65289 0 0 3 0x14280 nfsidl nfsio 23986 263395 0 0 3 0x14280 nfsidl nfsio 9499 149697 0 0 3 0x14280 nfsidl nfsio 88007 185592 0 0 3 0x14280 nfsidl nfsio 75154 200399 0 0 3 0x14280 nfsidl nfsio 94383 307755 0 0 3 0x14280 nfsidl nfsio 95391 201034 0 0 3 0x14280 nfsidl nfsio 43100 160345 0 0 3 0x14280 nfsidl nfsio 51873 38834 0 0 3 0x14280 nfsidl nfsio 16289 491437 0 0 3 0x14280 nfsidl nfsio 35562 211820 0 0 3 0x14280 nfsidl nfsio 3071 423296 0 0 3 0x14280 nfsidl nfsio 70396 266611 0 0 3 0x14280 nfsidl nfsio 4869 382416 0 0 3 0x14280 nfsidl nfsio 38159 6935 0 0 3 0x14280 nfsidl nfsio 35200 147172 0 0 3 0x14280 nfsidl nfsio 41105 88409 0 0 3 0x14280 nfsidl nfsio 64419 280545 25012 0 3 0x82 nanoslp syz-executor 26313 52425 25012 0 2 0x2 syz-executor 39142 92613 25012 0 2 0x2 syz-executor 57351 181432 25012 0 3 0x82 nanoslp syz-executor 94464 861 25012 0 3 0x82 nanoslp syz-executor 81539 399096 25012 0 3 0x82 nanoslp syz-executor 19265 224428 25012 0 3 0x82 nanoslp syz-executor 32884 96832 25012 0 2 0x2 syz-executor 25012 95297 42999 0 3 0x82 nanoslp syz-executor 42999 55281 41748 0 3 0x10008a sigsusp ksh 41748 244891 97832 0 3 0x98 kqread sshd-session 97832 195103 64378 0 3 0x92 kqread sshd-session 50646 309365 1 0 3 0x100083 ttyin getty 64378 21274 1 0 3 0x88 kqread sshd 20329 320404 22972 73 3 0x1100090 kqread syslogd 22972 433230 1 0 3 0x100082 sbwait syslogd 61266 128628 1 0 3 0x100080 kqread resolvd 87603 484272 34987 77 3 0x100092 kqread dhcpleased 69894 299088 34987 77 3 0x100092 kqread dhcpleased 34987 217394 1 0 3 0x80 kqread dhcpleased 94255 322633 0 0 3 0x14200 bored smr 78448 385543 0 0 2 0x14200 zerothread 9338 37226 0 0 3 0x14200 aiodoned aiodoned 10974 219179 0 0 3 0x14200 syncer update 60350 180028 0 0 3 0x14200 cleaner cleaner 66397 66137 0 0 3 0x14200 reaper reaper 92360 381933 0 0 3 0x14200 pgdaemon pagedaemon 54638 1256 0 0 3 0x14200 bored viomb 93563 392812 0 0 3 0x40014200 acpi0 acpi0 19141 414965 0 0 3 0x14200 bored softnet0 89812 114015 0 0 3 0x14200 bored systqmp 75902 275739 0 0 3 0x14200 bored systq 63368 383228 0 0 3 0x40014200 tmoslp softclock 60221 476414 0 0 3 0x40014200 idle0 1 395506 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 11028 12101K 12184K 166960K 12156 0 pcb 17 12K 12K 166960K 39 0 rtable 223 6K 6K 166960K 376 0 pf 28 12K 20K 166960K 55 0 ifaddr 38 6K 7K 166960K 46 0 ifgroup 46 2K 2K 166960K 55 0 sysctl 1 1K 9K 166960K 8 0 counters 32 17K 17K 166960K 35 0 ioctlops 0 0K 4K 166960K 42 0 iov 0 0K 1K 166960K 1 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1291 81K 81K 166960K 1394 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 6 0 VM map 2 1K 1K 166960K 2 0 sem 8 0K 0K 166960K 76 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 15 53K 93K 166960K 212 0 proc 59 59K 100K 166960K 513 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 6 0 in_multi 88 6K 7K 166960K 108 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 6 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 55 254K 254K 166960K 55 0 exec 0 0K 1K 166960K 437 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 185 157K 168K 166960K 3552 0 UVM aobj 7 2K 2K 166960K 7 0 pinsyscall 36 72K 94K 166960K 1322 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 2 0 NDP 10 0K 2K 166960K 28 0 temp 33 9102K 9110K 166960K 3797 0 kqueue 13 20K 24K 166960K 37 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 136 113 0 14 4 0 4 4 0 8 0 unpcb 144 64 0 48 1 0 1 1 0 8 0 syncache 336 5 0 5 1 0 1 1 0 8 1 tcpcb 736 30 0 26 1 0 1 1 0 8 0 arp 96 18 0 2 1 0 1 1 0 8 0 inpcb 328 119 0 112 2 0 2 2 0 8 1 nd6 112 25 0 4 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 1 0 1 1 0 1 1 0 8 1 pppxif 1416 1 0 1 1 0 1 1 0 8 1 pfsrclim 320 1 0 1 1 0 1 1 0 8 1 pfanchor 1288 4 0 0 1 0 1 1 0 8 0 pfrule 1360 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 256 474 0 65 30 0 30 30 0 8 2 art_table 40 475 0 65 5 0 5 5 0 8 0 art_node 32 113 0 23 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 72 73 0 67 1 0 1 1 0 8 0 shmpl 112 4 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1681 0 222 92 0 92 92 0 8 0 ffsino 256 1681 0 222 92 0 92 92 0 8 0 nchpl 144 1984 0 296 64 0 64 64 0 8 0 vnodes 216 1785 0 0 100 0 100 100 0 8 0 namei 1024 6118 0 6117 2 0 2 2 0 8 1 kstatmem 264 25 0 4 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 6635 0 6635 4 0 4 4 1 8 4 plimitpl 152 40 0 24 1 0 1 1 0 8 0 sigapl 424 530 0 470 8 0 8 8 0 8 0 knotepl 120 4841 0 4794 10 0 10 10 0 8 8 kqueuepl 184 41 0 32 1 0 1 1 0 8 0 pipepl 304 125 0 98 3 0 3 3 0 8 0 fdescpl 448 497 0 470 5 0 5 5 0 8 1 filepl 120 1771 0 1565 7 0 7 7 0 8 0 lockfpl 104 40 0 38 1 0 1 1 0 8 0 lockfspl 48 17 0 15 1 0 1 1 0 8 0 sessionpl 144 23 0 15 1 0 1 1 0 8 0 pgrppl 48 32 0 16 1 0 1 1 0 8 0 ucredpl 104 159 0 148 1 0 1 1 0 8 0 zombiepl 144 470 0 470 1 0 1 1 0 8 1 processpl 1152 530 0 470 5 0 5 5 0 8 0 procpl 664 649 0 584 7 0 7 7 0 8 0 sockpl 552 228 0 202 3 0 3 3 0 8 0 mcl64k 65536 5 0 5 1 0 1 1 0 8 1 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 5 1 0 1 1 0 8 1 mcl4k 4096 2579 0 2524 16 1 15 16 0 8 7 mcl2k 2048 190 0 190 1 0 1 1 0 8 1 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 4831 0 4685 12 0 12 12 0 8 2 bufpl 280 2334 0 102 160 0 160 160 0 8 0 anonpl 24 83405 0 80592 37 0 37 37 0 186 11 amapchunkpl 152 9916 0 9566 24 0 24 24 0 158 6 amappl16 200 935 0 912 4 0 4 4 0 8 2 amappl15 192 32 0 32 1 0 1 1 0 8 1 amappl14 184 415 0 414 1 0 1 1 0 8 0 amappl13 176 115 0 105 1 0 1 1 0 8 0 amappl12 168 734 0 710 2 0 2 2 0 8 0 amappl11 160 3 0 2 1 0 1 1 0 8 0 amappl10 152 80 0 70 1 0 1 1 0 8 0 amappl9 144 268 0 268 1 0 1 1 0 8 1 amappl8 136 95 0 94 1 0 1 1 0 8 0 amappl7 128 155 0 144 1 0 1 1 0 8 0 amappl6 120 152 0 150 1 0 1 1 0 8 0 amappl5 112 92 0 85 1 0 1 1 0 8 0 amappl4 104 288 0 271 1 0 1 1 0 8 0 amappl3 96 1900 0 1822 3 0 3 3 0 8 0 amappl2 88 524 0 472 2 0 2 2 0 8 0 amappl1 80 10491 0 9947 13 0 13 13 0 8 1 amappl 88 2836 0 2713 4 0 4 4 0 92 0 uvmvnodes 80 101 0 0 3 0 3 3 0 8 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 6 0 0 1 0 1 1 0 8 0 uaddrrnd 24 497 0 470 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 497 0 470 1 0 1 1 0 8 0 vmmpekpl 168 5929 0 5897 2 0 2 2 0 8 0 vmmpepl 168 40034 0 38412 80 0 80 80 0 357 5 vmsppl 368 496 0 470 4 0 4 4 0 8 1 rwobjpl 40 14052 0 13155 11 0 11 11 0 8 0 pdppl 4096 1000 0 940 96 32 64 80 0 8 4 pvpl 32 227050 0 219671 107 0 107 107 0 265 29 pmappl 216 496 0 470 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 363 0 33 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff80003c8fa2b8,ffffffffffffffff,0,a0c7df9f,fffffd806b0c1e90,fffffd8007ffd270) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:728 [inline] ktrops(ffff80003c8fa2b8,ffffffffffffffff,0,a0c7df9f,fffffd806b0c1e90,fffffd8007ffd270) at ktrops+0x58 sys/kern/kern_ktrace.c:571 doktrace(fffffd806b0c1e90,4,20c7df9f,0,ffff80003c8fa2b8) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:596 [inline] doktrace(fffffd806b0c1e90,4,20c7df9f,0,ffff80003c8fa2b8) at doktrace+0x6bd sys/kern/kern_ktrace.c:518 sys_ktrace(ffff80003c8fa2b8,ffff800032caff00,ffff800032cafe50) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:559 syscall(ffff800032caff00) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800032caff00) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfef7f5a2120, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff80003c8fa2b8,ffffffffffffffff,0,a0c7df9f,fffffd806b0c1e90,fffffd8007ffd270) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:728 [inline] ktrops(ffff80003c8fa2b8,ffffffffffffffff,0,a0c7df9f,fffffd806b0c1e90,fffffd8007ffd270) at ktrops+0x58 sys/kern/kern_ktrace.c:571 doktrace(fffffd806b0c1e90,4,20c7df9f,0,ffff80003c8fa2b8) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:596 [inline] doktrace(fffffd806b0c1e90,4,20c7df9f,0,ffff80003c8fa2b8) at doktrace+0x6bd sys/kern/kern_ktrace.c:518 sys_ktrace(ffff80003c8fa2b8,ffff800032caff00,ffff800032cafe50) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:559 syscall(ffff800032caff00) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800032caff00) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfef7f5a2120, count: -5