uvm_fault(0xfffffd806c0b0718, 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 * 19297 65861 0 0 0x4000000 0 syz-executor ktrops(ffff80002a7f2f78,ffffffffffffffff,0,c0000d06,fffffd8061c75390,fffffd807f7d7820) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7f2f78,ffffffffffffffff,0,c0000d06,fffffd8061c75390,fffffd807f7d7820) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd8061c75390,4,40000d06,0,ffff80002a7f2f78) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd8061c75390,4,40000d06,0,ffff80002a7f2f78) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7f2f78,ffff80003c99b2f0,ffff80003c99b240) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c99b2f0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa1077f956c0, 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(0xfffffd806c0b0718, 0xf, 0, 1) -> e ddb> trace ktrops(ffff80002a7f2f78,ffffffffffffffff,0,c0000d06,fffffd8061c75390,fffffd807f7d7820) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7f2f78,ffffffffffffffff,0,c0000d06,fffffd8061c75390,fffffd807f7d7820) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd8061c75390,4,40000d06,0,ffff80002a7f2f78) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd8061c75390,4,40000d06,0,ffff80002a7f2f78) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7f2f78,ffff80003c99b2f0,ffff80003c99b240) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c99b2f0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa1077f956c0, count: -5 ddb> show registers rdi 0xffff80002a7f2f78 rsi 0xffffffffffffffff rbp 0xffff80003c99b010 rbx 0xfffffd807f7d7820 rdx 0 rcx 0xc0000d06 rax 0xffff80002a7f2f78 r8 0xfffffd8061c75390 r9 0xfffffd807f7d7820 r10 0x57aa0c8a015a3582 r11 0xc2fa38795382c341 r12 0xffff80002a7f2f78 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0xc0000d06 rip 0xffffffff81304148 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c99af90 ss 0 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=19297 pid=65861 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a8c8030,0xffffffff838bafe0 process=0xffff800035d24d20 user=0xffff80003c996000, vmspace=0xfffffd806c0b0718 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 65861 167269 54761 0 2 0 syz-executor 65861 516816 54761 0 3 0x4000080 bell syz-executor *65861 19297 54761 0 7 0x4000000 syz-executor 5934 98780 43208 0 2 0x480 syz-executor 5934 513265 43208 0 3 0x4000080 kqread syz-executor 5934 473910 43208 0 3 0x4000080 fsleep syz-executor 59374 480492 87407 0 3 0x80 nanoslp syz-executor 59374 311491 87407 0 3 0x4000080 pipewr syz-executor 59374 219437 87407 0 3 0x4000080 pipewr syz-executor 59374 118994 87407 0 3 0x4000080 fsleep syz-executor 29788 398308 21739 -1 2 0x490 syz-executor 29788 442432 21739 -1 3 0x4000090 kqsel syz-executor 29788 133194 21739 -1 3 0x4000090 fsleep syz-executor 58963 88563 40188 0 3 0x82 wait syz-executor 13650 139330 0 0 3 0x14280 nfsidl nfsio 20683 98475 0 0 3 0x14280 nfsidl nfsio 13127 378404 0 0 3 0x14280 nfsidl nfsio 72712 471353 0 0 3 0x14280 nfsidl nfsio 54117 350541 0 0 3 0x14280 nfsidl nfsio 25775 365792 0 0 3 0x14280 nfsidl nfsio 14952 242714 0 0 3 0x14280 nfsidl nfsio 47642 395617 0 0 3 0x14280 nfsidl nfsio 79646 259700 0 0 3 0x14280 nfsidl nfsio 36901 430569 0 0 3 0x14280 nfsidl nfsio 91806 174313 0 0 3 0x14280 nfsidl nfsio 12211 53404 0 0 3 0x14280 nfsidl nfsio 86541 146585 0 0 3 0x14280 nfsidl nfsio 29701 387899 0 0 3 0x14280 nfsidl nfsio 49180 146863 0 0 3 0x14280 nfsidl nfsio 67314 213525 0 0 3 0x14280 nfsidl nfsio 90708 376391 0 0 3 0x14280 nfsidl nfsio 93371 511915 0 0 3 0x14280 nfsidl nfsio 68360 512934 0 0 3 0x14280 nfsidl nfsio 19554 456175 0 0 3 0x14280 nfsidl nfsio 87407 304576 40188 0 2 0x482 syz-executor 42631 67597 0 0 3 0x14200 acct acct 29810 343492 40188 0 2 0x2 syz-executor 29177 204170 0 0 3 0x14200 bored sosplice 7169 447301 40188 0 2 0x482 syz-executor 54761 481882 40188 0 2 0x482 syz-executor 43208 478982 40188 0 3 0x82 nanoslp syz-executor 21739 497252 40188 0 3 0x82 nanoslp syz-executor 6940 47807 40188 0 2 0x2 syz-executor 40188 344680 53349 0 3 0x82 kqread syz-executor 53349 9279 52542 0 3 0x10008a sigsusp ksh 52542 343969 30029 0 3 0x98 kqread sshd-session 30029 518715 3129 0 3 0x92 kqread sshd-session 57735 134656 1 0 3 0x100083 ttyopn getty 3129 276598 1 0 3 0x88 kqread sshd 63638 173084 44466 73 3 0x1100090 kqread syslogd 44466 295434 1 0 3 0x100082 sbwait syslogd 77192 381517 1 0 3 0x100080 kqread resolvd 47151 328288 65245 77 3 0x100092 kqread dhcpleased 99155 226866 65245 77 3 0x100092 kqread dhcpleased 65245 379421 1 0 3 0x80 kqread dhcpleased 9396 7658 0 0 3 0x14200 bored smr 63467 235791 0 0 2 0x14200 zerothread 69335 62117 0 0 3 0x14200 aiodoned aiodoned 64225 225198 0 0 3 0x14200 syncer update 60768 137350 0 0 3 0x14200 cleaner cleaner 63903 388959 0 0 3 0x14200 reaper reaper 76100 375470 0 0 3 0x14200 pgdaemon pagedaemon 57046 260905 0 0 3 0x14200 bored viomb 38480 201271 0 0 3 0x40014200 acpi0 acpi0 81651 346589 0 0 3 0x14200 bored softnet3 3669 104067 0 0 3 0x14200 bored softnet2 9002 179184 0 0 3 0x14200 bored softnet1 76181 172822 0 0 3 0x14200 bored softnet0 22132 494796 0 0 3 0x14200 bored systqmp 36135 469198 0 0 3 0x14200 bored systq 62020 509997 0 0 2 0x40014200 softclock 21373 465935 0 0 3 0x40014200 idle0 1 464879 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 10196 11186K 11566K 166960K 12521 0 pcb 17 15K 16K 166960K 265 0 rtable 199 11K 12K 166960K 555 0 pf 31 13K 15K 166960K 83 0 ifaddr 36 6K 7K 166960K 79 0 ifgroup 50 2K 2K 166960K 117 0 sysctl 3 1K 1K 166960K 3 0 counters 30 17K 17K 166960K 57 0 ioctlops 0 0K 4K 166960K 118 0 iov 0 0K 28K 166960K 124 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1400 88K 89K 166960K 2218 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 20 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 25 0 dirhash 12 2K 2K 166960K 33 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 236K 166960K 1039 0 sigio 0 0K 0K 166960K 153 0 proc 60 59K 124K 166960K 663 0 subproc 72 4K 4K 166960K 100 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 126 0 in_multi 77 5K 7K 166960K 162 0 ether_multi 1 0K 0K 166960K 4 0 mrt 0 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 103 466K 466K 166960K 103 0 exec 0 0K 1K 166960K 560 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 214 72K 100K 166960K 10680 0 UVM aobj 34 3K 3K 166960K 36 0 pinsyscall 37 74K 96K 166960K 2126 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 36 0 NDP 11 0K 2K 166960K 52 0 temp 76 8684K 8763K 166960K 23619 0 kqueue 17 25K 32K 166960K 198 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 120 146 0 143 2 0 2 2 0 8 1 rtentry 112 167 0 83 4 0 4 4 0 8 0 unpcb 144 1496 0 1480 7 1 6 6 0 8 5 syncache 336 4 0 4 2 1 1 1 0 8 1 tcpqe 32 2 0 2 1 0 1 1 0 8 1 tcpcb 808 416 0 409 14 7 7 7 0 8 6 arp 88 27 0 12 1 0 1 1 0 8 0 ipq 40 2 0 1 1 0 1 1 0 8 0 ipqe 40 3 0 2 1 0 1 1 0 8 0 inpcb 344 1265 0 1253 21 12 9 14 0 8 7 nd6 104 41 0 21 1 0 1 1 0 8 0 pkpcb 40 6 0 6 2 1 1 1 0 8 1 kcovpl 48 11 0 3 1 0 1 1 0 8 0 ppxss 1072 16 0 16 3 2 1 1 0 8 1 pppxif 1384 4 0 4 2 1 1 1 0 8 1 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 4 0 2 1 0 1 1 0 8 0 pfstate 344 2 0 1 1 0 1 1 0 8 0 pfrule 1344 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 695 0 328 30 1 29 30 0 8 4 art_table 32 697 0 328 4 0 4 4 0 8 0 art_node 16 166 0 93 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 5 1 0 1 1 0 8 0 semapl 112 22 0 12 1 0 1 1 0 8 0 shmpl 112 33 0 2 1 0 1 1 0 8 0 dirhash 1024 31 0 14 3 0 3 3 0 8 0 dino2pl 256 3302 0 1803 95 0 95 95 0 8 0 ffsino 248 3303 0 1803 95 0 95 95 0 8 0 nchpl 144 4733 0 3046 63 0 63 63 0 8 0 rtmask 32 3 0 3 2 1 1 1 0 8 1 uvmvnodes 80 3862 0 0 79 0 79 79 0 8 0 vnodes 216 3862 0 0 215 0 215 215 0 8 0 namei 1024 16768 0 16767 4 3 1 2 0 8 0 kstatmem 264 60 0 38 2 0 2 2 0 8 0 scsiplug 72 4 0 4 2 1 1 1 0 8 1 scxspl 216 14310 0 14310 12 9 3 8 1 8 3 plimitpl 152 279 0 263 1 0 1 1 0 8 0 sigapl 424 1322 0 1256 9 1 8 8 0 8 0 futexpl 64 14072 0 14069 1 0 1 1 0 8 0 knotepl 120 34851 0 34793 19 9 10 10 0 8 8 kqueuepl 184 354 0 339 3 2 1 3 0 8 0 pipepl 296 341 0 312 3 0 3 3 0 8 0 fdescpl 440 1281 0 1253 5 1 4 5 0 8 0 filepl 120 9401 0 9169 15 2 13 13 0 8 5 lockfpl 104 266 0 264 1 0 1 1 0 8 0 lockfspl 48 106 0 104 1 0 1 1 0 8 0 sessionpl 144 24 0 16 1 0 1 1 0 8 0 pgrppl 48 110 0 94 1 0 1 1 0 8 0 ucredpl 104 1397 0 1384 1 0 1 1 0 8 0 zombiepl 144 1373 0 1371 2 1 1 1 0 8 0 processpl 1112 1322 0 1256 5 0 5 5 0 8 0 procpl 656 2630 0 2555 8 0 8 8 0 8 1 sosppl 168 5 0 5 1 0 1 1 0 8 1 sockpl 528 2942 0 2911 19 8 11 12 0 8 8 mcl64k 65536 78 0 78 3 2 1 1 0 8 1 mcl12k 12288 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 17 0 17 3 2 1 1 0 8 1 mcl4k 4096 3517 0 3467 16 8 8 14 0 8 1 mcl2k 2048 998 0 990 4 0 4 4 0 8 2 mtagpl 96 77 0 33 2 0 2 2 0 8 0 mbufpl 256 13375 0 13179 20 0 20 20 0 8 3 bufpl 280 3872 0 130 268 0 268 268 0 8 0 anonpl 24 185322 0 182133 55 10 45 45 0 187 18 amapchunkpl 152 35890 0 35418 45 11 34 34 0 158 12 amappl16 200 3504 0 3473 21 9 12 15 0 8 8 amappl15 192 33 0 32 1 0 1 1 0 8 0 amappl14 184 114 0 104 1 0 1 1 0 8 0 amappl13 176 2 0 2 1 1 0 1 0 8 0 amappl12 168 1933 0 1905 3 1 2 3 0 8 0 amappl11 160 48 0 38 1 0 1 1 0 8 0 amappl10 152 2 0 2 1 1 0 1 0 8 0 amappl9 144 244 0 244 1 1 0 1 0 8 0 amappl8 136 29 0 28 1 0 1 1 0 8 0 amappl7 128 105 0 94 1 0 1 1 0 8 0 amappl6 120 200 0 197 1 0 1 1 0 8 0 amappl5 112 147 0 140 1 0 1 1 0 8 0 amappl4 104 307 0 291 1 0 1 1 0 8 0 amappl3 96 6956 0 6849 6 2 4 4 0 8 0 amappl2 88 671 0 615 2 0 2 2 0 8 0 amappl1 80 10338 0 9822 14 2 12 13 0 8 0 amappl 88 10238 0 10074 6 1 5 5 0 92 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 dma512 512 1 0 1 1 0 1 1 0 8 1 dma256 256 7 0 7 2 1 1 1 0 8 1 dma128 128 256 0 256 3 2 1 1 0 8 1 dma64 64 6 0 6 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 35 0 2 1 0 1 1 0 8 0 uaddrrnd 24 1281 0 1253 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1281 0 1253 1 0 1 1 0 8 0 vmmpekpl 168 11263 0 11219 3 0 3 3 0 8 0 vmmpepl 168 81932 0 80233 91 1 90 90 0 357 12 vmsppl 360 1280 0 1253 4 1 3 4 0 8 0 rwobjpl 32 26664 0 21917 39 0 39 39 0 8 0 pdppl 4096 2569 0 2506 101 34 67 83 0 8 4 pvpl 32 539673 0 530996 141 24 117 117 0 265 28 pmappl 216 1280 0 1253 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 302 0 60 8 1 7 8 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff80002a7f2f78,ffffffffffffffff,0,c0000d06,fffffd8061c75390,fffffd807f7d7820) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7f2f78,ffffffffffffffff,0,c0000d06,fffffd8061c75390,fffffd807f7d7820) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd8061c75390,4,40000d06,0,ffff80002a7f2f78) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd8061c75390,4,40000d06,0,ffff80002a7f2f78) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7f2f78,ffff80003c99b2f0,ffff80003c99b240) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c99b2f0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa1077f956c0, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff80002a7f2f78,ffffffffffffffff,0,c0000d06,fffffd8061c75390,fffffd807f7d7820) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80002a7f2f78,ffffffffffffffff,0,c0000d06,fffffd8061c75390,fffffd807f7d7820) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd8061c75390,4,40000d06,0,ffff80002a7f2f78) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd8061c75390,4,40000d06,0,ffff80002a7f2f78) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80002a7f2f78,ffff80003c99b2f0,ffff80003c99b240) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c99b2f0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa1077f956c0, count: -5