uvm_fault(0xfffffd80799e7cf8, 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 * 64400 92875 0 0 0x4000000 0 syz-executor ktrops(ffff80003c933250,ffffffffffffffff,0,a0c7df9f,fffffd806c982128,fffffd8007bfd340) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c933250,ffffffffffffffff,0,a0c7df9f,fffffd806c982128,fffffd8007bfd340) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806c982128,4,20c7df9f,0,ffff80003c933250) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806c982128,4,20c7df9f,0,ffff80003c933250) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003c933250,ffff80003c93fba0,ffff80003c93faf0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c93fba0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c93fba0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4e63d589a90, 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(0xfffffd80799e7cf8, 0xf, 0, 1) -> e ddb> trace ktrops(ffff80003c933250,ffffffffffffffff,0,a0c7df9f,fffffd806c982128,fffffd8007bfd340) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c933250,ffffffffffffffff,0,a0c7df9f,fffffd806c982128,fffffd8007bfd340) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806c982128,4,20c7df9f,0,ffff80003c933250) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806c982128,4,20c7df9f,0,ffff80003c933250) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003c933250,ffff80003c93fba0,ffff80003c93faf0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c93fba0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c93fba0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4e63d589a90, count: -5 ddb> show registers rdi 0xffff80003c933250 rsi 0xffffffffffffffff rbp 0xffff80003c93f8c0 rbx 0xfffffd8007bfd340 rdx 0 rcx 0xa0c7df9f rax 0xffff80003c933250 r8 0xfffffd806c982128 r9 0xfffffd8007bfd340 r10 0x8c97b7460693e395 r11 0x31d319f28ed5a16a r12 0xffff80003c933250 r13 0xffffffffffffffff r14 0xffffffffffffffff r15 0xa0c7df9f rip 0xffffffff81010d28 ktrops+0x58 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c93f840 ss 0 ktrops+0x58: movq 0x10(%r14),%r14 ddb> show proc PROC (syz-executor) tid=64400 pid=92875 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=83, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c9327f0,0xffff80003c932a98 process=0xffff80003c962d20 user=0xffff80003c93a000, vmspace=0xfffffd80799e7cf8 estcpu=33, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 50351 470249 10150 0 3 0x2 clonelk ifconfig 10150 472263 75691 0 3 0x10008a sigsusp sh 92875 16462 47829 0 2 0 syz-executor *92875 64400 47829 0 7 0x4000000 syz-executor 92875 511695 47829 0 3 0x4000080 fsleep syz-executor 75691 74922 69203 0 3 0x82 wait syz-executor 74964 493531 57190 0 3 0x80 nanoslp syz-executor 74964 500901 57190 0 3 0x4000000 smrbar syz-executor 53379 424 50612 0 2 0xc80 syz-executor 53379 113251 50612 0 3 0x4000080 kqsel syz-executor 53379 215075 50612 0 3 0x4000080 fsleep syz-executor 53379 435214 50612 0 3 0x4000080 fsleep syz-executor 26779 357936 69203 0 2 0x2 syz-executor 99914 409713 69203 0 2 0xc82 syz-executor 11667 205186 1 0 3 0x100083 ttyin getty 50612 272764 69203 0 3 0x82 nanoslp syz-executor 57190 350315 69203 0 3 0x82 nanoslp syz-executor 67954 39166 69203 0 2 0x2 syz-executor 47829 464630 69203 0 3 0x82 nanoslp syz-executor 51619 515678 0 0 3 0x14200 acct acct 15242 369973 69203 0 2 0xc82 syz-executor 69203 145075 42950 0 3 0x82 kqread syz-executor 42950 348220 169 0 3 0x10008a sigsusp ksh 169 394264 93663 0 3 0x98 kqread sshd-session 93663 26616 80850 0 3 0x92 kqread sshd-session 80850 359092 1 0 3 0x88 kqread sshd 73484 61029 63363 73 3 0x1100090 kqread syslogd 63363 174186 1 0 3 0x100082 sbwait syslogd 42974 393711 1 0 3 0x100080 kqread resolvd 78631 308493 74192 77 3 0x100092 kqread dhcpleased 31260 310113 74192 77 3 0x100092 kqread dhcpleased 74192 210013 1 0 3 0x80 kqread dhcpleased 63600 47382 0 0 3 0x14200 bored smr 84390 410653 0 0 2 0x14200 zerothread 26224 78383 0 0 3 0x14200 aiodoned aiodoned 33102 508240 0 0 3 0x14200 syncer update 2044 478495 0 0 3 0x14200 cleaner cleaner 20627 340114 0 0 3 0x14200 reaper reaper 64352 189546 0 0 3 0x14200 pgdaemon pagedaemon 5896 305372 0 0 3 0x14200 bored viomb 7864 268902 0 0 3 0x40014200 acpi0 acpi0 68496 71386 0 0 2 0x14200 softnet0 12452 139175 0 0 3 0x14200 bored systqmp 72786 413633 0 0 3 0x14200 bored systq 36999 327125 0 0 3 0x40014200 tmoslp softclock 52084 379265 0 0 3 0x40014200 idle0 1 379259 0 0 3 0x80082 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 11080 12147K 13200K 166960K 15414 0 pcb 17 15K 23K 166960K 962 0 rtable 266 14K 14K 166960K 1136 0 pf 39 14K 18K 166960K 275 0 ifaddr 43 8K 9K 166960K 203 0 ifgroup 57 2K 2K 166960K 326 0 sysctl 4 1K 9K 166960K 18 0 counters 36 18K 18K 166960K 317 0 ioctlops 0 0K 4K 166960K 787 0 iov 0 0K 28K 166960K 125 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1428 90K 90K 166960K 3700 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 32 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 150 0 dirhash 12 2K 2K 166960K 39 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 240K 166960K 2522 0 sigio 0 0K 0K 166960K 97 0 proc 68 67K 124K 166960K 1021 0 subproc 72 4K 4K 166960K 182 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 290 0 in_multi 90 6K 7K 166960K 323 0 ether_multi 1 0K 0K 166960K 24 0 mrt 1 0K 0K 166960K 17 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 247 1102K 1102K 166960K 247 0 exec 0 0K 2K 166960K 780 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 226 156K 173K 166960K 23211 0 UVM aobj 106 27K 27K 166960K 115 0 pinsyscall 38 76K 96K 166960K 3883 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 124 0 NDP 13 0K 2K 166960K 144 0 temp 81 8676K 8932K 166960K 74114 0 kqueue 13 20K 32K 166960K 514 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 120 446 0 442 3 2 1 3 0 8 0 rtentry 136 295 0 197 4 0 4 4 0 8 0 unpcb 144 1849 0 1830 6 5 1 6 0 8 0 syncache 336 8 0 8 1 1 0 1 0 8 0 tcpqe 32 9 0 9 1 1 0 1 0 8 0 tcpcb 736 810 0 738 13 6 7 7 0 8 0 arp 96 44 0 27 1 0 1 1 0 8 0 ipq 40 13 0 8 1 0 1 1 0 8 0 ipqe 40 20 0 15 1 0 1 1 0 8 0 inpcb 328 2546 0 2467 15 8 7 10 0 8 0 ip6q 72 7 0 4 1 0 1 1 0 8 0 ip6af 40 11 0 7 1 0 1 1 0 8 0 nd6 112 69 0 46 1 0 1 1 0 8 0 pkpcb 40 7 0 7 1 1 0 1 0 8 0 kcovpl 48 20 0 12 1 0 1 1 0 8 0 mppekey 1024 67 0 66 2 1 1 1 0 8 0 ppxss 1072 250 0 248 2 1 1 1 0 8 0 pppxif 1384 17 0 17 1 1 0 1 0 8 0 pfstscr 40 8 0 6 1 0 1 1 0 8 0 pfrktable 1344 35 0 35 1 1 0 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 6 0 3 1 0 1 1 0 8 0 pfstkey 128 14 0 10 1 0 1 1 0 8 0 pfstate 384 8 0 6 1 0 1 1 0 8 0 pfrule 1360 9 0 7 1 0 1 1 0 8 0 rttmr 136 4 0 4 2 1 1 1 0 8 1 art_heap8 4096 5 0 0 5 0 5 5 0 8 0 art_heap4 256 1255 0 835 37 6 31 31 0 8 1 art_table 40 1260 0 835 6 0 6 6 0 8 0 art_node 32 295 0 207 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 4 1 1 0 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 146 0 136 1 0 1 1 0 8 0 shmpl 112 99 0 7 3 0 3 3 0 8 0 dirhash 1024 36 0 19 3 0 3 3 0 8 0 dino2pl 256 6225 0 4703 96 0 96 96 0 8 0 ffsino 256 6225 0 4703 96 0 96 96 0 8 0 nchpl 144 9606 0 7878 65 0 65 65 0 8 0 rtmask 32 23 0 23 2 1 1 1 0 8 1 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 35535 0 35534 3 2 1 2 0 8 0 vcpupl 3904 11 0 0 2 0 2 2 0 8 0 vmpool 808 13 0 2 2 0 2 2 0 8 0 kstatmem 264 212 0 186 3 0 3 3 0 8 0 scsiplug 72 18 0 18 2 1 1 1 0 8 1 scxspl 216 42072 0 42072 8 7 1 8 1 8 1 plimitpl 152 736 0 717 1 0 1 1 0 8 0 sigapl 424 2793 0 2750 8 2 6 8 0 8 0 knotepl 120 106680 0 106633 37 26 11 17 0 8 7 kqueuepl 184 880 0 870 4 1 3 4 0 8 2 pipepl 304 363 0 336 5 2 3 5 0 8 0 fdescpl 448 2757 0 2728 5 1 4 5 0 8 0 filepl 120 20271 0 19985 15 4 11 14 0 8 2 lockfpl 104 888 0 886 2 1 1 2 0 8 0 lockfspl 48 335 0 333 1 0 1 1 0 8 0 sessionpl 144 36 0 28 1 0 1 1 0 8 0 pgrppl 48 77 0 61 1 0 1 1 0 8 0 ucredpl 104 4259 0 4248 1 0 1 1 0 8 0 zombiepl 144 2752 0 2750 2 1 1 1 0 8 0 processpl 1152 2793 0 2750 5 0 5 5 0 8 0 procpl 664 6119 0 6070 8 1 7 8 0 8 0 sosppl 176 18 0 18 2 1 1 1 0 8 1 sockpl 552 5061 0 4959 18 10 8 12 0 8 0 mcl64k 65536 126 0 126 2 1 1 1 0 8 1 mcl16k 16384 1 0 1 1 1 0 1 0 8 0 mcl9k 9216 1 0 1 1 1 0 1 0 8 0 mcl8k 8192 38 0 38 2 1 1 1 0 8 1 mcl4k 4096 5477 0 5418 16 8 8 16 0 8 0 mcl2k 2048 2448 0 2441 5 3 2 4 0 8 1 mtagpl 96 57 0 57 2 1 1 2 0 8 1 mbufpl 256 32295 0 32128 36 19 17 36 0 8 2 bufpl 280 14454 0 8233 445 0 445 445 0 8 0 anonpl 24 366059 0 362734 94 56 38 94 0 187 0 amapchunkpl 152 79742 0 79294 37 13 24 34 0 158 4 amappl16 200 6319 0 6292 42 36 6 34 0 8 0 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 4 0 4 1 1 0 1 0 8 0 amappl13 176 542 0 540 1 0 1 1 0 8 0 amappl12 168 3169 0 3132 2 0 2 2 0 8 0 amappl11 160 5 0 5 1 1 0 1 0 8 0 amappl10 152 42 0 32 1 0 1 1 0 8 0 amappl9 144 264 0 263 1 0 1 1 0 8 0 amappl8 136 20 0 18 1 0 1 1 0 8 0 amappl7 128 127 0 125 1 0 1 1 0 8 0 amappl6 120 399 0 385 1 0 1 1 0 8 0 amappl5 112 67 0 59 1 0 1 1 0 8 0 amappl4 104 458 0 432 1 0 1 1 0 8 0 amappl3 96 14028 0 13943 3 0 3 3 0 8 0 amappl2 88 2846 0 2773 2 0 2 2 0 8 0 amappl1 80 19416 0 18883 13 1 12 13 0 8 0 amappl 88 21906 0 21751 5 0 5 5 0 92 0 uvmvnodes 80 163 0 0 4 0 4 4 0 8 0 dma16384 16384 2 0 2 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 6 0 6 1 1 0 1 0 8 0 dma128 128 260 0 260 1 1 0 1 0 8 0 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 18 0 17 1 0 1 1 0 8 0 aobjpl 72 114 0 9 2 0 2 2 0 8 0 uaddrrnd 24 2757 0 2728 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2757 0 2728 1 0 1 1 0 8 0 vmmpekpl 168 20801 0 20737 4 0 4 4 0 8 0 vmmpepl 168 171842 0 170112 107 23 84 107 0 357 3 vmsppl 368 2756 0 2728 4 1 3 4 0 8 0 rwobjpl 40 41867 0 40750 16 2 14 16 0 8 0 pdppl 4096 5546 0 5471 139 60 79 82 0 8 4 pvpl 32 1131823 0 1123349 175 74 101 175 0 265 4 pmappl 216 2769 0 2730 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 473 0 114 12 0 12 12 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ktrops(ffff80003c933250,ffffffffffffffff,0,a0c7df9f,fffffd806c982128,fffffd8007bfd340) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c933250,ffffffffffffffff,0,a0c7df9f,fffffd806c982128,fffffd8007bfd340) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806c982128,4,20c7df9f,0,ffff80003c933250) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806c982128,4,20c7df9f,0,ffff80003c933250) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003c933250,ffff80003c93fba0,ffff80003c93faf0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c93fba0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c93fba0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4e63d589a90, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace ktrops(ffff80003c933250,ffffffffffffffff,0,a0c7df9f,fffffd806c982128,fffffd8007bfd340) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff80003c933250,ffffffffffffffff,0,a0c7df9f,fffffd806c982128,fffffd8007bfd340) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd806c982128,4,20c7df9f,0,ffff80003c933250) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd806c982128,4,20c7df9f,0,ffff80003c933250) at doktrace+0x6bd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff80003c933250,ffff80003c93fba0,ffff80003c93faf0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff80003c93fba0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c93fba0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4e63d589a90, count: -5