uvm_fault(0xfffffc006dfb4b98, 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 *136043 70106 0 0 0x4000000 0 syz-executor ktrops(ffff8000380e1a20,ffffffffffffffff,0,c0000002,fffffc006d269030,fffffc0007ffd6e8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:728 [inline] ktrops(ffff8000380e1a20,ffffffffffffffff,0,c0000002,fffffc006d269030,fffffc0007ffd6e8) at ktrops+0x58 sys/kern/kern_ktrace.c:571 doktrace(fffffc006d269030,4,40000002,0,ffff8000380e1a20) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:596 [inline] doktrace(fffffc006d269030,4,40000002,0,ffff8000380e1a20) at doktrace+0x6bd sys/kern/kern_ktrace.c:518 sys_ktrace(ffff8000380e1a20,ffff80002a75d5e0,ffff80002a75d530) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:559 syscall(ffff80002a75d5e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a75d5e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x27a02360010, 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(0xfffffc006dfb4b98, 0xf, 0, 1) -> e ddb> trace ktrops(ffff8000380e1a20,ffffffffffffffff,0,c0000002,fffffc006d269030,fffffc0007ffd6e8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:728 [inline] ktrops(ffff8000380e1a20,ffffffffffffffff,0,c0000002,fffffc006d269030,fffffc0007ffd6e8) at ktrops+0x58 sys/kern/kern_ktrace.c:571 doktrace(fffffc006d269030,4,40000002,0,ffff8000380e1a20) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:596 [inline] doktrace(fffffc006d269030,4,40000002,0,ffff8000380e1a20) at doktrace+0x6bd sys/kern/kern_ktrace.c:518 sys_ktrace(ffff8000380e1a20,ffff80002a75d5e0,ffff80002a75d530) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:559 syscall(ffff80002a75d5e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a75d5e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x27a02360010, count: -5 ddb> show registers rdi 0xffff800035cd0000 rsi 0x6b51 __ALIGN_SIZE+0x5b51 rbp 0xffff80002a75d300 rbx 0xfffffc0007ffd6e8 rdx 0xffff800035cd0000 rcx 0x6b50 __ALIGN_SIZE+0x5b50 rax 0xffffffff82933283 ktrops+0x43 r8 0xfffffc006d269030 r9 0xfffffc0007ffd6e8 r10 0xd62d3003ee11ff9e r11 0x10fef976748c7f7e r12 0xffff8000380e1a20 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0xc0000002 rip 0xffffffff82933298 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002a75d280 ss 0 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=136043 pid=70106 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=0xffff8000380e02c8,0xffff8000380e1500 process=0xffff8000ffff5220 user=0xffff80002a758000, vmspace=0xfffffc006dfb4b98 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 94166 57589 54695 0 2 0 syz-executor 94166 177356 54695 0 2 0x4000000 syz-executor 94166 450188 54695 0 2 0x4000000 syz-executor 70106 483619 26822 0 2 0 syz-executor *70106 136043 26822 0 7 0x4000000 syz-executor 9349 220747 79949 0 2 0 syz-executor 9349 507845 79949 0 3 0x4000000 smrbar syz-executor 9349 210020 79949 0 3 0x4000080 fsleep syz-executor 15748 472070 6645 0 2 0xc80 syz-executor 15748 448795 6645 0 3 0x4000080 lockf syz-executor 15748 121124 6645 0 3 0x4000080 fsleep syz-executor 21101 262242 89449 0 2 0 syz-executor 21101 135785 89449 0 3 0x4000080 fsleep syz-executor 21101 136967 89449 0 3 0x4000080 fsleep syz-executor 27971 222213 30886 60929 2 0xc90 syz-executor 27971 101347 30886 60929 3 0x4000090 msgwait syz-executor 27971 520530 30886 60929 3 0x4000090 kqsel syz-executor 27971 2392 30886 60929 3 0x4000090 fsleep syz-executor 58516 501839 28855 0 3 0x80 nanoslp syz-executor 58516 507849 28855 0 3 0x4000080 sbwait syz-executor 58516 55897 28855 0 3 0x4000080 fsleep syz-executor 33968 294283 0 0 3 0x14280 nfsidl nfsio 66501 492673 0 0 3 0x14280 nfsidl nfsio 36847 504435 0 0 3 0x14280 nfsidl nfsio 41610 322237 0 0 3 0x14280 nfsidl nfsio 20443 66862 0 0 3 0x14280 nfsidl nfsio 58070 129187 0 0 3 0x14280 nfsidl nfsio 77240 128695 0 0 3 0x14280 nfsidl nfsio 72548 316919 0 0 3 0x14280 nfsidl nfsio 21248 181281 0 0 3 0x14280 nfsidl nfsio 16336 184232 0 0 3 0x14280 nfsidl nfsio 3997 3479 0 0 3 0x14280 nfsidl nfsio 44333 302205 0 0 3 0x14280 nfsidl nfsio 27159 300852 0 0 3 0x14280 nfsidl nfsio 12197 406251 0 0 3 0x14280 nfsidl nfsio 36087 503660 0 0 3 0x14280 nfsidl nfsio 52876 517539 0 0 3 0x14280 nfsidl nfsio 27589 110783 0 0 3 0x14280 nfsidl nfsio 53216 287173 0 0 3 0x14280 nfsidl nfsio 94961 407202 0 0 3 0x14280 nfsidl nfsio 52556 410520 0 0 3 0x14280 nfsidl nfsio 75702 512766 55538 0 2 0xc82 syz-executor 79949 229486 55538 0 2 0xc82 syz-executor 26822 2928 55538 0 3 0x82 nanoslp syz-executor 54695 12515 55538 0 3 0x82 nanoslp syz-executor 6645 473119 55538 0 2 0xc82 syz-executor 30886 142187 55538 0 2 0xc82 syz-executor 89449 434703 55538 0 3 0x82 nanoslp syz-executor 28855 454683 55538 0 3 0x82 nanoslp syz-executor 55538 154325 8935 0 3 0x82 kqread syz-executor 8935 65582 1 0 3 0x10280a bqwait ksh 96739 52824 1 0 3 0x102803 bqwait getty 55423 171359 1 0 3 0x10002808 bqwait sshd 8344 425128 1 0 3 0x10102802 bqwait syslogd 44523 231126 1 0 3 0x102800 bqwait resolvd 11535 28316 0 0 3 0x14200 bored smr 86844 82527 0 0 2 0x14200 zerothread 22151 186030 0 0 3 0x14200 aiodoned aiodoned 43945 194326 0 0 3 0x14200 syncer update 62166 433242 0 0 3 0x14200 cleaner cleaner 64100 326471 0 0 3 0x14200 reaper reaper 98906 469194 0 0 3 0x14200 pgdaemon pagedaemon 23921 121586 0 0 3 0x14200 bored viomb 74333 84150 0 0 3 0x40014200 acpi0 acpi0 1422 452559 0 0 3 0x14200 bored softnet0 91136 329947 0 0 3 0x14200 bored systqmp 62805 361473 0 0 3 0x14200 bored systq 86465 310428 0 0 3 0x40014200 tmoslp softclock 36738 193263 0 0 3 0x40014200 idle0 1 516237 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 11034 12174K 12422K 166960K 12620 0 pcb 18 15K 16K 166960K 177 0 rtable 228 6K 7K 166960K 384 0 pf 29 12K 17K 166960K 47 0 ifaddr 38 6K 7K 166960K 47 0 ifgroup 43 1K 2K 166960K 63 0 sysctl 4 1K 9K 166960K 9 0 counters 32 17K 18K 166960K 36 0 ioctlops 0 0K 4K 166960K 72 0 iov 0 0K 12K 166960K 9 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1363 86K 86K 166960K 1619 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 20K 24K 166960K 5 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 20 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 65K 81K 166960K 347 0 sigio 0 0K 0K 166960K 2 0 proc 54 43K 100K 166960K 520 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 33 0 in_multi 88 6K 7K 166960K 105 0 ether_multi 1 0K 0K 166960K 1 0 mrt 1 0K 0K 166960K 9 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 73 334K 334K 166960K 73 0 exec 0 0K 1K 166960K 393 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 200 118K 157K 166960K 4749 0 UVM aobj 6 2K 2K 166960K 6 0 pinsyscall 27 54K 89K 166960K 1450 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 7 0 NDP 10 0K 2K 166960K 30 0 temp 52 9133K 9141K 166960K 9757 0 kqueue 5 10K 33K 166960K 70 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 50 0 49 1 0 1 1 0 8 0 rtentry 136 116 0 14 4 0 4 4 0 8 0 unpcb 144 185 0 179 3 0 3 3 0 8 2 syncache 336 6 0 6 1 0 1 1 0 8 1 tcpcb 736 75 0 69 1 0 1 1 0 8 0 arp 96 18 0 2 1 0 1 1 0 8 0 inpcb 328 389 0 344 7 0 7 7 0 8 3 nd6 112 28 0 4 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 pfstscr 40 4 0 4 1 0 1 1 0 8 1 pfosfp 40 1 0 0 1 0 1 1 0 8 0 pfosfpen 112 1 0 0 1 0 1 1 0 8 0 pfanchor 1288 1 0 1 1 0 1 1 0 8 1 pfstkey 128 4 0 4 1 0 1 1 0 8 1 pfstate 384 2 0 2 1 0 1 1 0 8 1 pfrule 1360 2 0 2 1 0 1 1 0 8 1 rttmr 136 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 256 512 0 83 30 0 30 30 0 8 3 art_table 40 513 0 83 5 0 5 5 0 8 0 art_node 32 116 0 23 1 0 1 1 0 8 0 sysvmsgpl 40 42 0 2 1 0 1 1 0 8 0 semapl 72 18 0 8 1 0 1 1 0 8 0 shmpl 112 3 0 0 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1988 0 524 92 0 92 92 0 8 0 ffsino 256 1989 0 524 92 0 92 92 0 8 0 nchpl 144 2534 0 833 64 0 64 64 0 8 0 vnodes 216 2227 0 0 124 0 124 124 0 8 0 namei 1024 8393 0 8387 2 0 2 2 0 8 0 kstatmem 264 29 0 8 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 8806 0 8738 8 0 8 8 1 8 2 plimitpl 152 51 0 35 1 0 1 1 0 8 0 sigapl 424 663 0 604 8 0 8 8 0 8 0 knotepl 120 10147 0 10120 9 0 9 9 0 8 7 kqueuepl 184 142 0 136 1 0 1 1 0 8 0 pipepl 304 137 0 110 3 0 3 3 0 8 0 fdescpl 448 630 0 606 4 0 4 4 0 8 0 filepl 120 3213 0 2990 10 0 10 10 0 8 2 lockfpl 104 168 0 165 1 0 1 1 0 8 0 lockfspl 48 45 0 43 1 0 1 1 0 8 0 sessionpl 144 27 0 20 1 0 1 1 0 8 0 pgrppl 48 37 0 22 1 0 1 1 0 8 0 ucredpl 104 510 0 496 1 0 1 1 0 8 0 zombiepl 144 607 0 604 1 0 1 1 0 8 0 processpl 1152 663 0 604 5 0 5 5 0 8 0 procpl 664 983 0 910 7 0 7 7 0 8 0 sockpl 552 629 0 577 8 0 8 8 0 8 4 mcl64k 65536 11 0 11 1 0 1 1 0 8 1 mcl9k128 9344 3 0 3 1 0 1 1 0 8 1 mcl8k 8192 12 0 12 1 0 1 1 0 8 1 mcl4k 4096 2801 0 2748 14 0 14 14 0 8 6 mcl2k 2048 337 0 336 1 0 1 1 0 8 0 mtagpl 96 9 0 6 1 0 1 1 0 8 0 mbufpl 256 6709 0 6509 14 0 14 14 0 8 0 bufpl 272 3504 0 102 227 0 227 227 0 8 0 anonpl 24 103424 0 99812 32 0 32 32 0 186 10 amapchunkpl 152 14147 0 13605 25 0 25 25 0 158 4 amappl16 200 1518 0 1496 4 0 4 4 0 8 2 amappl15 192 19 0 19 1 0 1 1 0 8 1 amappl14 184 410 0 409 1 0 1 1 0 8 0 amappl13 176 116 0 112 1 0 1 1 0 8 0 amappl12 168 870 0 847 2 0 2 2 0 8 0 amappl11 160 6 0 6 1 0 1 1 0 8 1 amappl10 152 60 0 58 1 0 1 1 0 8 0 amappl9 144 271 0 271 1 0 1 1 0 8 1 amappl8 136 174 0 173 1 0 1 1 0 8 0 amappl7 128 180 0 179 1 0 1 1 0 8 0 amappl6 120 165 0 164 1 0 1 1 0 8 0 amappl5 112 98 0 95 1 0 1 1 0 8 0 amappl4 104 258 0 249 1 0 1 1 0 8 0 amappl3 96 2791 0 2700 4 0 4 4 0 8 0 amappl2 88 519 0 507 2 0 2 2 0 8 0 amappl1 80 10954 0 10835 13 0 13 13 0 8 4 amappl 88 3988 0 3839 5 0 5 5 0 92 0 uvmvnodes 80 105 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 7 0 7 1 0 1 1 0 8 1 dma128 128 254 0 254 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 5 0 0 1 0 1 1 0 8 0 uaddrrnd 24 630 0 606 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 630 0 606 1 0 1 1 0 8 0 vmmpekpl 168 6796 0 6764 2 0 2 2 0 8 0 vmmpepl 168 48266 0 47202 82 0 82 82 0 357 13 vmsppl 368 629 0 606 4 0 4 4 0 8 1 rwobjpl 40 15951 0 15475 11 0 11 11 0 8 0 pdppl 4096 1266 0 1212 92 26 66 74 0 8 12 pvpl 32 277481 0 269482 89 0 89 89 0 265 17 pmappl 216 629 0 606 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 584 0 26 16 0 16 16 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff8000380e1a20,ffffffffffffffff,0,c0000002,fffffc006d269030,fffffc0007ffd6e8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:728 [inline] ktrops(ffff8000380e1a20,ffffffffffffffff,0,c0000002,fffffc006d269030,fffffc0007ffd6e8) at ktrops+0x58 sys/kern/kern_ktrace.c:571 doktrace(fffffc006d269030,4,40000002,0,ffff8000380e1a20) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:596 [inline] doktrace(fffffc006d269030,4,40000002,0,ffff8000380e1a20) at doktrace+0x6bd sys/kern/kern_ktrace.c:518 sys_ktrace(ffff8000380e1a20,ffff80002a75d5e0,ffff80002a75d530) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:559 syscall(ffff80002a75d5e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a75d5e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x27a02360010, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff8000380e1a20,ffffffffffffffff,0,c0000002,fffffc006d269030,fffffc0007ffd6e8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:728 [inline] ktrops(ffff8000380e1a20,ffffffffffffffff,0,c0000002,fffffc006d269030,fffffc0007ffd6e8) at ktrops+0x58 sys/kern/kern_ktrace.c:571 doktrace(fffffc006d269030,4,40000002,0,ffff8000380e1a20) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:596 [inline] doktrace(fffffc006d269030,4,40000002,0,ffff8000380e1a20) at doktrace+0x6bd sys/kern/kern_ktrace.c:518 sys_ktrace(ffff8000380e1a20,ffff80002a75d5e0,ffff80002a75d530) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:559 syscall(ffff80002a75d5e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a75d5e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x27a02360010, count: -5 ddb>