uvm_fault(0xffffffff82db20d0, 0xffff80001d765ce1, 0, 2) -> d kernel: page fault trap, code=2 Stopped at memset+0x49: repe stosb %es:(%rdi) TID PID UID PRFLAGS PFLAGS CPU COMMAND *160285 97552 73 0x1100010 0 0K syslogd memset() at memset+0x49 ffs_write(ffff80002a1d87a0) at ffs_write+0x924 VOP_WRITE(fffffd806e5512d8,ffff80002a1d89c0,3,fffffd807f7d7b60) at VOP_WRITE+0xc3 sys/kern/vfs_vops.c:245 vn_write(fffffd807a1d7850,ffff80002a1d89c0,0) at vn_write+0x15b sys/kern/vfs_vnops.c:408 dofilewritev(ffff80002a18e2a8,e,ffff80002a1d89c0,0,ffff80002a1d8a80) at dofilewritev+0x1a0 sys/kern/sys_generic.c:375 sys_writev(ffff80002a18e2a8,ffff80002a1d8b30,ffff80002a1d8a80) at sys_writev+0xab sys/kern/sys_generic.c:322 syscall(ffff80002a1d8b30) at syscall+0x5ae mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff80002a1d8b30) at syscall+0x5ae sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x71e2f70bd540, count: 7 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: uvm_fault(0xffffffff82db20d0, 0xffff80001d765ce1, 0, 2) -> d ddb{0}> trace memset() at memset+0x49 ffs_write(ffff80002a1d87a0) at ffs_write+0x924 VOP_WRITE(fffffd806e5512d8,ffff80002a1d89c0,3,fffffd807f7d7b60) at VOP_WRITE+0xc3 sys/kern/vfs_vops.c:245 vn_write(fffffd807a1d7850,ffff80002a1d89c0,0) at vn_write+0x15b sys/kern/vfs_vnops.c:408 dofilewritev(ffff80002a18e2a8,e,ffff80002a1d89c0,0,ffff80002a1d8a80) at dofilewritev+0x1a0 sys/kern/sys_generic.c:375 sys_writev(ffff80002a18e2a8,ffff80002a1d8b30,ffff80002a1d8a80) at sys_writev+0xab sys/kern/sys_generic.c:322 syscall(ffff80002a1d8b30) at syscall+0x5ae mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff80002a1d8b30) at syscall+0x5ae sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x71e2f70bd540, count: -8 ddb{0}> show registers rdi 0xffff80001d765ce1 rsi 0 rbp 0xffff80002a1d86c0 rbx 0x1 rdx 0x7 rcx 0x7 rax 0 r8 0x318 r9 0xffff80002a1d8610 r10 0xb3949e928c9b0b80 r11 0xffff80001d765ce1 r12 0x4000 __ALIGN_SIZE+0x3000 r13 0x1 r14 0xfffffd806e6e5228 r15 0x18fce1 acpi_pdirpa+0x17bb44 rip 0xffffffff813f6b99 memset+0x49 cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff80002a1d84c8 ss 0x10 memset+0x49: repe stosb %es:(%rdi) ddb{0}> show proc PROC (syslogd) tid=160285 pid=97552 tcnt=1 stat=onproc flags process=1100010 proc=0 runpri=24, usrpri=50, slppri=24, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a18e000,0xffff80002a18d818 process=0xffff8000ffff5f20 user=0xffff80002a1d3000, vmspace=0xfffffd806f3811c8 estcpu=0, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 61078 176923 17943 0 2 0 syz-executor.2 61078 485431 17943 0 2 0x4000000 syz-executor.2 40324 286368 91930 0 2 0 syz-executor.5 40324 396683 91930 0 2 0x4000000 syz-executor.5 3457 223951 6276 0 2 0x10 syz-executor.3 3457 115814 6276 0 3 0x4000090 fsleep syz-executor.3 70171 393768 25084 0 2 0 syz-executor.4 70171 130605 25084 0 2 0x4000000 syz-executor.4 82572 30507 24163 0 2 0x2 syz-executor.1 95905 408714 6805 0 2 0 syz-executor.6 95905 386201 6805 0 3 0x4000080 fsleep syz-executor.6 56822 447225 42201 0 2 0 syz-executor.7 56822 99156 42201 0 3 0x4000080 netio syz-executor.7 56822 51216 42201 0 2 0x4000000 syz-executor.7 17943 454309 24163 0 2 0x482 syz-executor.2 98111 321799 24163 0 2 0x2 syz-executor.0 6276 13477 24163 0 2 0x482 syz-executor.3 6805 273308 24163 0 2 0x482 syz-executor.6 25084 109437 24163 0 2 0x482 syz-executor.4 44004 442731 1 0 3 0x100083 ttyin getty 91930 483224 24163 0 2 0x482 syz-executor.5 80311 3009 0 0 3 0x14200 acct acct 42201 379050 24163 0 2 0x482 syz-executor.7 32729 286477 0 0 3 0x14280 nfsidl nfsio 6076 46527 0 0 3 0x14280 nfsidl nfsio 60534 423021 0 0 3 0x14280 nfsidl nfsio 21334 120604 0 0 3 0x14280 nfsidl nfsio 9063 167043 0 0 3 0x14280 nfsidl nfsio 19457 165628 0 0 3 0x14280 nfsidl nfsio 62946 103167 0 0 3 0x14280 nfsidl nfsio 33820 29922 0 0 3 0x14280 nfsidl nfsio 74249 516827 0 0 3 0x14280 nfsidl nfsio 81729 11930 0 0 3 0x14280 nfsidl nfsio 59622 404159 0 0 3 0x14280 nfsidl nfsio 86971 224642 0 0 3 0x14280 nfsidl nfsio 88646 452348 0 0 3 0x14280 nfsidl nfsio 85198 180275 0 0 3 0x14280 nfsidl nfsio 84644 74116 0 0 3 0x14280 nfsidl nfsio 42766 302042 0 0 3 0x14280 nfsidl nfsio 21987 442451 0 0 3 0x14280 nfsidl nfsio 95740 335824 0 0 3 0x14280 nfsidl nfsio 78847 339590 0 0 3 0x14280 nfsidl nfsio 67499 104494 0 0 3 0x14280 nfsidl nfsio 79451 63075 0 0 3 0x14200 bored sosplice 24163 352126 3697 0 3 0x2000082 thrsleep syz-fuzzer 24163 76907 3697 0 2 0x6000482 syz-fuzzer 24163 1386 3697 0 3 0x6000082 wait syz-fuzzer 24163 496492 3697 0 3 0x6000082 thrsleep syz-fuzzer 24163 276219 3697 0 3 0x6000082 thrsleep syz-fuzzer 24163 97658 3697 0 3 0x6000082 wait syz-fuzzer 24163 16631 3697 0 3 0x6000082 wait syz-fuzzer 24163 258241 3697 0 3 0x6000082 wait syz-fuzzer 24163 123283 3697 0 3 0x6000082 wait syz-fuzzer 24163 154801 3697 0 3 0x6000082 wait syz-fuzzer 24163 217955 3697 0 3 0x6000082 wait syz-fuzzer 24163 414940 3697 0 3 0x6000082 thrsleep syz-fuzzer 24163 435180 3697 0 3 0x6000082 wait syz-fuzzer 24163 3067 3697 0 3 0x6000082 thrsleep syz-fuzzer 24163 43855 3697 0 3 0x6000082 kqread syz-fuzzer 24163 308627 3697 0 3 0x6000082 thrsleep syz-fuzzer 3697 418011 83542 0 3 0x10008a sigsusp ksh 83542 16240 22174 0 3 0x9a kqread sshd 22174 117415 1 0 3 0x88 kqread sshd 67874 143679 79695 74 3 0x1100092 bpf pflogd 79695 259687 1 0 3 0x80 netio pflogd *97552 160285 11338 73 7 0x1100010 syslogd 11338 115224 1 0 3 0x100082 netio syslogd 14838 195537 1 0 3 0x100080 kqread resolvd 15076 114167 0 0 3 0x14200 bored smr 25187 10892 0 0 2 0x14200 zerothread 45996 404315 0 0 3 0x14200 aiodoned aiodoned 87278 67102 0 0 3 0x14200 syncer update 26573 453137 0 0 3 0x14200 cleaner cleaner 37380 70688 0 0 3 0x14200 reaper reaper 23285 452177 0 0 3 0x14200 pgdaemon pagedaemon 76299 61374 0 0 3 0x14200 bored viomb 66802 279958 0 0 3 0x40014200 acpi0 acpi0 92138 423801 0 0 7 0x40014200 idle1 44204 508306 0 0 3 0x14200 bored softnet3 19785 504835 0 0 3 0x14200 bored softnet2 36819 148524 0 0 3 0x14200 bored softnet1 34996 214859 0 0 2 0x14200 softnet0 94955 310832 0 0 3 0x14200 bored systqmp 71035 389334 0 0 3 0x14200 bored systq 55643 88273 0 0 3 0x14200 tmoslp softclockmp 23422 75166 0 0 3 0x40014200 tmoslp softclock 50823 193808 0 0 3 0x40014200 idle0 1 111550 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 82572 (syz-executor.1) thread 0xffff80002a23cd58 (30507) Process 98111 (syz-executor.0) thread 0xffff80002d6c3560 (321799) Process 97552 (syslogd) thread 0xffff80002a18e2a8 (160285) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10251 6535K 7571K 166960K 28905 0 pcb 15 22K 24K 166960K 2617 0 rtable 243 15K 16K 166960K 6105 0 pf 43 11K 11K 166960K 569 0 ifaddr 53 20K 22K 166960K 634 0 ifgroup 76 3K 3K 166960K 919 0 sysctl 4 1K 4K 166960K 13 0 counters 74 37K 38K 166960K 572 0 ioctlops 0 0K 4K 166960K 3137 0 iov 0 0K 32K 166960K 3192 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1715 107K 107K 166960K 11701 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 338 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 3636 0 dirhash 12 2K 2K 166960K 126 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 16 57K 93K 166960K 31477 0 sigio 0 0K 0K 166960K 1330 0 proc 92 69K 127K 166960K 5044 0 subproc 104 6K 9K 166960K 1635 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 2163 0 in_multi 101 7K 7K 166960K 1653 0 ether_multi 1 0K 0K 166960K 46 0 mrt 1 0K 0K 166960K 23 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 331 1473K 1473K 166960K 331 0 exec 0 0K 1K 166960K 5523 0 pfkey data 0 0K 0K 166960K 21 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 605 1136K 1145K 166960K 302151 0 UVM aobj 131 4K 4K 166960K 143 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 1383 0 NDP 19 0K 1K 166960K 494 0 temp 74 6772K 137848K 166960K 344064 0 kqueue 6 10K 29K 166960K 2611 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 24 0 0 1 0 1 1 0 8 0 rtpcb 120 1764 0 1763 17 16 1 4 0 8 0 rtentry 112 1875 0 1765 5 1 4 4 0 8 0 unpcb 144 24995 0 24983 233 226 7 10 0 8 6 syncache 336 265 0 265 54 53 1 1 0 8 1 sackhl 24 5 20 5 2 2 0 1 0 8 0 tcpqe 32 431 0 431 37 37 0 1 0 8 0 tcpcb 808 9560 0 9551 264 259 5 15 0 8 3 arp 120 399 0 381 1 0 1 1 0 8 0 ipq 40 39 0 39 2 2 0 1 0 8 0 ipqe 40 117 0 117 2 2 0 1 0 8 0 inpcb 392 24334 0 24325 399 394 5 22 0 8 3 nd6 136 366 0 342 2 1 1 2 0 8 0 pkpcb 40 252 0 252 29 28 1 1 0 8 1 kcovpl 48 116 0 108 1 0 1 1 0 8 0 ppxss 1168 86 0 86 23 23 0 1 0 8 0 pffrag 232 286 0 286 8 8 0 2 0 482 0 pffrnode 88 240 0 240 7 7 0 1 0 8 0 pffrent 40 1001 0 1001 7 7 0 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 995 0 966 1 0 1 1 0 8 0 pfstkey 128 1001 0 972 5 3 2 2 0 8 0 pfstate 376 1001 0 972 26 23 3 8 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 5984 0 5518 80 49 31 31 0 8 1 art_table 32 5985 0 5518 4 0 4 4 0 8 0 art_node 16 1762 0 1662 1 0 1 1 0 8 0 sysvmsgpl 40 12 0 7 2 1 1 1 0 8 0 semapl 112 3634 0 3624 1 0 1 1 0 8 0 shmpl 112 140 0 12 4 0 4 4 0 8 0 dirhash 1024 93 0 76 3 0 3 3 0 8 0 dino2pl 256 41381 0 39778 101 0 101 101 0 8 0 ffsino 272 41381 0 39778 108 0 108 108 0 8 0 nchpl 144 83763 0 82110 64 1 63 64 0 8 0 uvmvnodes 80 9006 0 0 184 0 184 184 0 8 0 vnodes 216 9006 0 0 501 0 501 501 0 8 0 namei 1024 288693 0 288692 18 17 1 2 0 8 0 percpumem 16 300 0 249 1 0 1 1 0 8 0 vcpupl 2048 514 0 2 64 0 64 64 0 8 0 vmpool 696 553 0 41 49 2 47 47 0 8 0 kstatmem 264 532 0 498 4 1 3 3 0 8 0 scxspl 216 262882 0 262881 67 66 1 8 1 8 0 plimitpl 152 4219 0 4204 1 0 1 1 0 8 0 sigapl 424 31672 0 31606 15 7 8 9 0 8 0 futexpl 64 250055 0 250053 12 11 1 1 0 8 0 knotepl 120 1105 0 0 12 1 11 11 0 8 0 kqueuepl 216 5973 0 5968 74 70 4 5 0 8 3 pipepl 320 5618 0 5557 148 140 8 13 0 8 2 fdescpl 496 31571 0 31545 5 0 5 5 0 8 0 filepl 152 187209 0 186916 255 237 18 22 0 8 6 lockfpl 104 9024 0 9023 12 11 1 2 0 8 0 lockfspl 48 2865 0 2864 1 0 1 1 0 8 0 sessionpl 144 138 0 122 1 0 1 1 0 8 0 pgrppl 48 478 0 462 1 0 1 1 0 8 0 ucredpl 104 28439 0 28425 1 0 1 1 0 8 0 zombiepl 144 31606 0 31606 10 9 1 1 0 8 1 processpl 1136 31672 0 31606 9 4 5 6 0 8 0 procpl 680 84227 0 84139 30 21 9 10 0 8 0 srpgc 96 154 0 154 49 49 0 1 0 8 0 sosppl 168 350 0 350 28 27 1 1 0 8 1 sockpl 584 51578 0 51556 480 469 11 22 0 8 8 mcl64k 65536 34 0 0 3 0 3 3 0 8 0 mcl16k 16384 33 0 0 4 1 3 3 0 8 0 mcl12k 12288 25 0 0 2 0 2 2 0 8 0 mcl9k 9216 33 0 0 2 0 2 2 0 8 0 mcl8k 8192 99 0 0 10 7 3 10 0 8 0 mcl4k 4096 51 0 0 5 2 3 3 0 8 0 mcl2k2 2112 7 0 0 1 0 1 1 0 8 0 mcl2k 2048 557 0 0 35 17 18 35 0 8 0 mtagpl 96 465 0 0 11 4 7 11 0 8 0 mbufpl 256 2160 0 0 71 0 71 71 0 8 0 bufpl 280 54668 0 47510 644 1 643 644 0 8 20 anonpl 24 3184971 0 3171221 496 378 118 167 0 186 0 amapchunkpl 152 969705 0 968810 260 219 41 70 0 158 0 amappl16 200 62205 0 61651 237 203 34 53 0 8 0 amappl15 192 19 0 18 1 0 1 1 0 8 0 amappl14 184 504 0 487 2 1 1 2 0 8 0 amappl13 176 113 0 112 1 0 1 1 0 8 0 amappl12 168 33937 0 33902 4 2 2 3 0 8 0 amappl11 160 89 0 79 1 0 1 1 0 8 0 amappl10 152 188 0 172 1 0 1 1 0 8 0 amappl9 144 370 0 370 56 56 0 1 0 8 0 amappl8 136 1583 0 1389 7 0 7 7 0 8 0 amappl7 128 539 0 513 2 0 2 2 0 8 0 amappl6 120 2191 0 2164 1 0 1 1 0 8 0 amappl5 112 889 0 881 1 0 1 1 0 8 0 amappl4 104 1585 0 1548 4 2 2 2 0 8 0 amappl3 96 186104 0 186024 4 1 3 3 0 8 0 amappl2 88 33579 0 33503 4 2 2 3 0 8 0 amappl1 80 127018 0 126553 24 12 12 23 0 8 0 amappl 88 299983 0 299671 8 0 8 8 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 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 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 72 142 0 12 3 0 3 3 0 8 0 uaddrrnd 24 32124 0 31586 4 0 4 4 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 32124 0 31586 4 0 4 4 0 8 0 vmmpekpl 168 198355 0 198212 7 0 7 7 0 8 0 vmmpepl 168 1892674 0 1889759 601 434 167 174 0 357 8 vmsppl 448 32123 0 31586 68 7 61 61 0 8 1 rwobjpl 56 445220 0 434340 187 30 157 157 0 8 0 pdppl 4096 64255 0 63684 1533 958 575 579 0 8 4 pvpl 32 42198 0 0 344 3 341 342 0 265 0 pmappl 248 32123 0 31586 34 0 34 34 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 2958 0 1885 31 0 31 31 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace memset() at memset+0x49 ffs_write(ffff80002a1d87a0) at ffs_write+0x924 VOP_WRITE(fffffd806e5512d8,ffff80002a1d89c0,3,fffffd807f7d7b60) at VOP_WRITE+0xc3 sys/kern/vfs_vops.c:245 vn_write(fffffd807a1d7850,ffff80002a1d89c0,0) at vn_write+0x15b sys/kern/vfs_vnops.c:408 dofilewritev(ffff80002a18e2a8,e,ffff80002a1d89c0,0,ffff80002a1d8a80) at dofilewritev+0x1a0 sys/kern/sys_generic.c:375 sys_writev(ffff80002a18e2a8,ffff80002a1d8b30,ffff80002a1d8a80) at sys_writev+0xab sys/kern/sys_generic.c:322 syscall(ffff80002a1d8b30) at syscall+0x5ae mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff80002a1d8b30) at syscall+0x5ae sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x71e2f70bd540, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffff800029cebff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800029cebff0) at sched_idle+0x41e sys/kern/kern_sched.c:183 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800029cebff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800029cebff0) at sched_idle+0x41e sys/kern/kern_sched.c:183 end trace frame: 0x0, count: -5