uvm_fault(0xffffffff82ab1a40, 0xffff80001e83feec, 0, 2) -> d kernel: page fault trap, code=0 Stopped at memset+0x45: repe stosb %es:(%rdi) TID PID UID PRFLAGS PFLAGS CPU COMMAND *421075 27914 73 0x1100010 0 0K syslogd memset() at memset+0x45 ffs_write(ffff8000212bc870) at ffs_write+0x93c VOP_WRITE(fffffd806eaf7b40,ffff8000212bca90,3,fffffd807f7d7a90) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 vn_write(fffffd8071df1980,ffff8000212bca90,0) at vn_write+0x157 sys/kern/vfs_vnops.c:408 dofilewritev(ffff8000ffff7cf0,e,ffff8000212bca90,0,ffff8000212bcb80) at dofilewritev+0x19c sys/kern/sys_generic.c:375 sys_writev(ffff8000ffff7cf0,ffff8000212bcb30,ffff8000212bcb80) at sys_writev+0xa7 sys/kern/sys_generic.c:322 syscall(ffff8000212bcc00) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff8000212bcc00) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd9280, 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(0xffffffff82ab1a40, 0xffff80001e83feec, 0, 2) -> d ddb{0}> trace memset() at memset+0x45 ffs_write(ffff8000212bc870) at ffs_write+0x93c VOP_WRITE(fffffd806eaf7b40,ffff8000212bca90,3,fffffd807f7d7a90) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 vn_write(fffffd8071df1980,ffff8000212bca90,0) at vn_write+0x157 sys/kern/vfs_vnops.c:408 dofilewritev(ffff8000ffff7cf0,e,ffff8000212bca90,0,ffff8000212bcb80) at dofilewritev+0x19c sys/kern/sys_generic.c:375 sys_writev(ffff8000ffff7cf0,ffff8000212bcb30,ffff8000212bcb80) at sys_writev+0xa7 sys/kern/sys_generic.c:322 syscall(ffff8000212bcc00) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff8000212bcc00) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd9280, count: -8 ddb{0}> show registers rdi 0xffff80001e83feec rsi 0 rbp 0xffff8000212bc790 rbx 0x1 rdx 0x4 rcx 0x4 rax 0 r8 0x3110 __ALIGN_SIZE+0x2110 r9 0xffff8000212bc6e8 r10 0x1390527fe5304148 r11 0xffff80001e83feec r12 0x44eec acpi_pdirpa+0x30d54 r13 0xfffffd806e7d28a0 r14 0x4000 __ALIGN_SIZE+0x3000 r15 0xfffffd806e7d2888 rip 0xffffffff81999905 memset+0x45 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff8000212bc598 ss 0x10 memset+0x45: repe stosb %es:(%rdi) ddb{0}> show proc PROC (syslogd) pid=421075 stat=onproc flags process=1100010 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff7270,0xffff8000ffff6aa0 process=0xffff800021298860 user=0xffff8000212b7000, vmspace=0xfffffd806ef44738 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 75500 442126 91807 0 2 0 syz-executor.5 75920 230333 35072 0 2 0 syz-executor.4 75920 469996 35072 0 2 0x4000000 syz-executor.4 37956 453212 40737 0 2 0 syz-executor.7 37956 347642 40737 0 2 0x4000000 syz-executor.7 10028 397069 49129 0 2 0 syz-executor.1 10028 250255 49129 0 2 0x4000000 syz-executor.1 10028 516778 49129 0 2 0x4000000 syz-executor.1 10028 394573 49129 0 2 0x4000000 syz-executor.1 5071 440483 11405 0 2 0 syz-executor.2 5071 259822 11405 0 3 0x4000080 fsleep syz-executor.2 98971 359002 83949 0 2 0 syz-executor.6 98971 272678 83949 0 3 0x4000080 fsleep syz-executor.6 37405 515507 95778 0 2 0 syz-executor.0 37405 17842 95778 0 2 0x4000000 syz-executor.0 37405 492969 95778 0 2 0x4000000 syz-executor.0 84699 17284 25905 0 3 0x80 nanoslp syz-executor.3 84699 6180 25905 0 3 0x4000080 lockf syz-executor.3 84699 205175 25905 0 3 0x4000080 fsleep syz-executor.3 11405 44200 41697 0 3 0x82 nanoslp syz-executor.2 25905 272940 41697 0 3 0x82 nanoslp syz-executor.3 91807 417612 41697 0 3 0x82 nanoslp syz-executor.5 35072 475847 41697 0 3 0x82 nanoslp syz-executor.4 46347 205500 1 0 3 0x100083 ttyin getty 83949 84504 41697 0 3 0x82 nanoslp syz-executor.6 95778 109114 41697 0 3 0x82 nanoslp syz-executor.0 49129 176146 41697 0 3 0x82 nanoslp syz-executor.1 40737 88428 41697 0 3 0x82 nanoslp syz-executor.7 1666 209983 0 0 3 0x14280 nfsidl nfsio 98619 255268 0 0 3 0x14280 nfsidl nfsio 56190 137693 0 0 3 0x14280 nfsidl nfsio 82272 467051 0 0 3 0x14280 nfsidl nfsio 7567 10906 0 0 3 0x14280 nfsidl nfsio 92605 13862 0 0 3 0x14280 nfsidl nfsio 4619 64465 0 0 3 0x14280 nfsidl nfsio 14964 100144 0 0 3 0x14280 nfsidl nfsio 43020 142107 0 0 3 0x14280 nfsidl nfsio 71922 71979 0 0 3 0x14280 nfsidl nfsio 82615 158848 0 0 3 0x14280 nfsidl nfsio 12960 437694 0 0 3 0x14280 nfsidl nfsio 61483 378608 0 0 3 0x14280 nfsidl nfsio 46469 130878 0 0 3 0x14280 nfsidl nfsio 3398 210530 0 0 3 0x14280 nfsidl nfsio 25347 390140 0 0 3 0x14280 nfsidl nfsio 40462 226964 0 0 3 0x14280 nfsidl nfsio 68040 40149 0 0 3 0x14280 nfsidl nfsio 45808 234654 0 0 3 0x14280 nfsidl nfsio 82829 414127 0 0 3 0x14280 nfsidl nfsio 97946 342025 0 0 3 0x14200 bored sosplice 41697 500799 49349 0 3 0x82 thrsleep syz-fuzzer 41697 471357 49349 0 3 0x4000082 thrsleep syz-fuzzer 41697 85245 49349 0 3 0x4000082 wait syz-fuzzer 41697 288617 49349 0 3 0x4000082 wait syz-fuzzer 41697 13119 49349 0 3 0x4000082 thrsleep syz-fuzzer 41697 97853 49349 0 3 0x4000082 wait syz-fuzzer 41697 143828 49349 0 3 0x4000082 thrsleep syz-fuzzer 41697 207007 49349 0 3 0x4000082 thrsleep syz-fuzzer 41697 27193 49349 0 3 0x4000082 kqread syz-fuzzer 41697 81094 49349 0 3 0x4000082 wait syz-fuzzer 41697 1667 49349 0 3 0x4000082 wait syz-fuzzer 41697 268343 49349 0 3 0x4000082 thrsleep syz-fuzzer 41697 386020 49349 0 3 0x4000082 wait syz-fuzzer 41697 144998 49349 0 3 0x4000082 thrsleep syz-fuzzer 41697 289512 49349 0 3 0x4000082 wait syz-fuzzer 41697 93039 49349 0 3 0x4000082 wait syz-fuzzer 49349 126882 82828 0 3 0x10008a sigsusp ksh 82828 280236 5224 0 3 0x9a kqread sshd 5224 150348 1 0 3 0x88 kqread sshd 71431 489422 25928 74 3 0x1100092 bpf pflogd 25928 146650 1 0 3 0x80 netio pflogd *27914 421075 84055 73 7 0x1100010 syslogd 84055 290612 1 0 3 0x100082 netio syslogd 46626 419888 1 0 3 0x100080 kqread resolvd 41172 480611 71628 77 3 0x100092 kqread dhcpleased 60639 444460 71628 77 3 0x100092 kqread dhcpleased 71628 212367 1 0 3 0x80 kqread dhcpleased 22303 462854 0 0 3 0x14200 bored smr 53776 270420 0 0 2 0x14200 zerothread 58885 477595 0 0 3 0x14200 aiodoned aiodoned 83494 185910 0 0 3 0x14200 syncer update 94441 274484 0 0 3 0x14200 cleaner cleaner 57640 483360 0 0 3 0x14200 reaper reaper 7375 256076 0 0 3 0x14200 pgdaemon pagedaemon 88387 507041 0 0 3 0x14200 bored viomb 47670 299554 0 0 3 0x40014200 acpi0 acpi0 31362 419067 0 0 7 0x40014200 idle1 7807 366508 0 0 3 0x14200 bored softnet 17984 76877 0 0 3 0x14200 bored softnet 48414 409217 0 0 3 0x14200 bored softnet 78355 252084 0 0 3 0x14200 bored softnet 71625 376564 0 0 3 0x14200 bored systqmp 78335 523284 0 0 3 0x14200 bored systq 92185 328321 0 0 3 0x40014200 bored softclock 5847 403799 0 0 3 0x40014200 idle0 1 431498 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10238 6500K 7682K 78643K 57617 0 pcb 13 18K 23K 78643K 4739 0 rtable 184 15K 18K 78643K 2337 0 ifaddr 98 22K 23K 78643K 869 0 sysctl 2 0K 4K 78643K 7 0 counters 54 35K 36K 78643K 446 0 ioctlops 0 0K 4K 78643K 3425 0 iov 0 0K 32K 78643K 1033 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1489 93K 93K 78643K 12140 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 115 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 1806 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 18 65K 81K 78643K 11138 0 sigio 0 0K 0K 78643K 422 0 proc 71 91K 116K 78643K 1810 0 subproc 104 6K 7K 78643K 497 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 611 0 in_multi 73 4K 6K 78643K 772 0 ether_multi 1 0K 0K 78643K 69 0 mrt 2 0K 0K 78643K 61 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 295 1314K 1314K 78643K 295 0 exec 0 0K 2K 78643K 3490 0 pfkey data 0 0K 0K 78643K 43 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 8 62K 62K 78643K 8 0 UVM amap 481 778K 778K 78643K 65216 0 UVM aobj 134 4K 4K 78643K 140 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 389 0 NDP 15 0K 2K 78643K 236 0 temp 141 4726K 5751K 78643K 121195 0 kqueue 12 18K 28K 78643K 910 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 754 0 751 7 6 1 3 0 8 0 rtentry 112 695 0 621 4 1 3 4 0 8 0 unpcb 144 7380 0 7365 79 73 6 6 0 8 5 syncache 296 62 0 62 12 11 1 1 0 8 1 tcpqe 32 20 0 20 6 5 1 1 0 8 1 tcpcb 768 6054 0 6047 161 159 2 16 0 8 0 arp 120 81 0 68 1 0 1 1 0 8 0 inpcb 368 15448 0 15439 148 141 7 19 0 8 5 nd6 48 157 0 143 1 0 1 1 0 8 0 pkpcb 40 41 0 41 8 8 0 1 0 8 0 kcovpl 48 38 0 30 1 0 1 1 0 8 0 ppxss 1256 123 0 123 10 10 0 1 0 8 0 pfstscr 40 18 0 17 3 2 1 1 0 8 0 pffrag 232 176 0 176 3 2 1 1 0 482 1 pffrnode 88 174 0 174 3 2 1 1 0 8 1 pffrent 40 692 0 692 3 2 1 1 0 8 1 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 83 0 83 4 4 0 1 0 8 0 pfanchor 1280 83 0 66 4 2 2 2 0 8 0 pftag 88 8 0 8 2 2 0 1 0 8 0 pfstitem 24 41 0 37 1 0 1 1 0 8 0 pfstkey 120 65 0 61 1 0 1 1 0 8 0 pfstate 336 53 0 50 3 2 1 3 0 8 0 pfrule 1360 104 0 103 3 2 1 2 0 8 0 rttmr 136 23 0 23 6 6 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 3607 0 3272 43 18 25 30 0 8 0 art_table 32 3608 0 3272 4 0 4 4 0 8 0 art_node 16 692 0 627 1 0 1 1 0 8 0 sysvmsgpl 40 53 0 16 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 1800 0 1790 1 0 1 1 0 8 0 shmpl 112 137 0 9 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 15088 0 13629 92 0 92 92 0 8 0 ffsino 272 15088 0 13629 98 0 98 98 0 8 0 nchpl 144 29828 0 28176 63 0 63 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 114654 0 114653 5 4 1 2 0 8 0 percpumem 16 235 0 196 1 0 1 1 0 8 0 vcpupl 2048 57 0 0 8 0 8 8 0 8 0 vmpool 568 68 0 11 5 0 5 5 0 8 0 pfiaddrpl 120 27 0 27 4 4 0 1 0 8 0 kstatmem 264 278 0 248 4 1 3 3 0 8 0 scsiplug 72 15 0 15 5 4 1 1 0 8 1 scxspl 216 89907 0 89907 28 27 1 8 0 8 1 plimitpl 152 1504 0 1489 1 0 1 1 0 8 0 sigapl 424 11405 0 11336 9 1 8 8 0 8 0 futexpl 64 110615 0 110612 2 1 1 1 0 8 0 knotepl 120 794 0 0 12 0 12 12 0 8 0 kqueuepl 216 2322 0 2314 41 40 1 10 0 8 0 pipepl 320 1913 0 1885 45 37 8 8 0 8 5 fdescpl 496 11365 0 11334 5 0 5 5 0 8 0 filepl 152 82829 0 82587 110 92 18 24 0 8 8 lockfpl 104 16267 0 16262 29 27 2 4 0 8 1 lockfspl 48 7432 0 7429 4 3 1 2 0 8 0 sessionpl 144 56 0 39 1 0 1 1 0 8 0 pgrppl 48 128 0 111 1 0 1 1 0 8 0 ucredpl 104 9876 0 9863 1 0 1 1 0 8 0 zombiepl 144 11336 0 11336 1 0 1 1 0 8 1 processpl 1064 11405 0 11336 5 0 5 5 0 8 0 procpl 672 30893 0 30798 19 10 9 10 0 8 0 srpgc 96 46 0 46 14 14 0 1 0 8 0 sosppl 168 127 0 127 19 18 1 1 0 8 1 sockpl 488 23679 0 23652 335 317 18 30 0 8 13 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 0 8 0 mcl12k 12288 25 0 0 2 0 2 2 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 32 0 0 4 1 3 3 0 8 0 mcl4k 4096 32 0 0 4 1 3 3 0 8 0 mcl2k2 2112 6 0 0 1 0 1 1 0 8 0 mcl2k 2048 706 0 0 47 10 37 47 0 8 0 mtagpl 96 1913 0 0 39 0 39 39 0 8 0 mbufpl 256 2209 0 0 115 0 115 115 0 8 0 bufpl 288 20851 0 14519 453 0 453 453 0 8 0 anonpl 24 2176336 0 2158865 232 110 122 139 0 186 0 amapchunkpl 152 220154 0 219386 381 349 32 345 0 158 1 amappl16 200 30947 0 30323 153 119 34 45 0 8 0 amappl15 192 2445 0 2438 1 0 1 1 0 8 0 amappl14 184 695 0 687 1 0 1 1 0 8 0 amappl13 176 1477 0 1476 1 0 1 1 0 8 0 amappl12 168 1438 0 1431 1 0 1 1 0 8 0 amappl11 160 1939 0 1914 3 1 2 2 0 8 0 amappl10 152 1922 0 1915 1 0 1 1 0 8 0 amappl9 144 1780 0 1776 1 0 1 1 0 8 0 amappl8 136 2118 0 1991 5 0 5 5 0 8 0 amappl7 128 968 0 943 1 0 1 1 0 8 0 amappl6 120 1699 0 1681 2 1 1 2 0 8 0 amappl5 112 9544 0 9525 1 0 1 1 0 8 0 amappl4 104 4664 0 4627 2 1 1 2 0 8 0 amappl3 96 35255 0 35192 2 0 2 2 0 8 0 amappl2 88 3516 0 3469 2 0 2 2 0 8 0 amappl1 80 279689 0 278964 20 4 16 20 0 8 1 amappl 88 63885 0 63647 7 1 6 6 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 72 139 0 6 3 0 3 3 0 8 0 uaddrrnd 24 11434 0 11346 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 11434 0 11346 1 0 1 1 0 8 0 vmmpekpl 168 83109 0 83027 4 0 4 4 0 8 0 vmmpepl 168 1103892 0 1100867 249 110 139 152 0 357 0 vmsppl 368 11433 0 11346 9 1 8 8 0 8 0 rwobjpl 56 272428 0 264537 134 22 112 115 0 8 0 pdppl 4096 22875 0 22749 580 454 126 126 0 8 0 pvpl 32 4335245 0 4312751 433 234 199 242 0 265 3 pmappl 248 11433 0 11346 7 1 6 6 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1635 0 646 29 0 29 29 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace memset() at memset+0x45 ffs_write(ffff8000212bc870) at ffs_write+0x93c VOP_WRITE(fffffd806eaf7b40,ffff8000212bca90,3,fffffd807f7d7a90) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 vn_write(fffffd8071df1980,ffff8000212bca90,0) at vn_write+0x157 sys/kern/vfs_vnops.c:408 dofilewritev(ffff8000ffff7cf0,e,ffff8000212bca90,0,ffff8000212bcb80) at dofilewritev+0x19c sys/kern/sys_generic.c:375 sys_writev(ffff8000ffff7cf0,ffff8000212bcb30,ffff8000212bcb80) at sys_writev+0xa7 sys/kern/sys_generic.c:322 syscall(ffff8000212bcc00) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff8000212bcc00) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd9280, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020dd8ff0) at x86_ipi_db+0x1a 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+0x23 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020dd8ff0) at sched_idle+0x417 sys/kern/kern_sched.c:175 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800020dd8ff0) at x86_ipi_db+0x1a 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+0x23 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020dd8ff0) at sched_idle+0x417 sys/kern/kern_sched.c:175 end trace frame: 0x0, count: -5