uvm_fault(0xffffffff83504770, 0xffff800027bd5820, 0, 2) -> d kernel: page fault trap, code=2 Stopped at memset+0x52: repe stosq %es:(%rdi) TID PID UID PRFLAGS PFLAGS CPU COMMAND *335385 58455 73 0x1100010 0 0K syslogd memset() at memset+0x52 ffs_write(ffff80002a069c00) at ffs_write+0xbab sys/ufs/ffs/ffs_vnops.c:401 VOP_WRITE(fffffd806e287b48,ffff80002a069e20,3,fffffd807f7d3a90) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 vn_write(fffffd806f8a48e8,ffff80002a069e20,0) at vn_write+0x1d1 sys/kern/vfs_vnops.c:408 dofilewritev(ffff8000ffffd6d8,e,ffff80002a069e20,0,ffff80002a069ee0) at dofilewritev+0x23c sys/kern/sys_generic.c:380 sys_writev(ffff8000ffffd6d8,ffff80002a069f90,ffff80002a069ee0) at sys_writev+0xd8 sys/kern/sys_generic.c:327 syscall(ffff80002a069f90) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a069f90) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7400ea7f7090, 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(0xffffffff83504770, 0xffff800027bd5820, 0, 2) -> d ddb{0}> trace memset() at memset+0x52 ffs_write(ffff80002a069c00) at ffs_write+0xbab sys/ufs/ffs/ffs_vnops.c:401 VOP_WRITE(fffffd806e287b48,ffff80002a069e20,3,fffffd807f7d3a90) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 vn_write(fffffd806f8a48e8,ffff80002a069e20,0) at vn_write+0x1d1 sys/kern/vfs_vnops.c:408 dofilewritev(ffff8000ffffd6d8,e,ffff80002a069e20,0,ffff80002a069ee0) at dofilewritev+0x23c sys/kern/sys_generic.c:380 sys_writev(ffff8000ffffd6d8,ffff80002a069f90,ffff80002a069ee0) at sys_writev+0xd8 sys/kern/sys_generic.c:327 syscall(ffff80002a069f90) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a069f90) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7400ea7f7090, count: -8 ddb{0}> show registers rdi 0xffff800027bd5820 rsi 0 rbp 0xffff80002a069b20 rbx 0x43820 acpi_pdirpa+0x2f691 rdx 0 rcx 0xfc rax 0 r8 0x7e0 r9 0xffff80002a069a80 r10 0xc1e1fd4c2b3a7add r11 0xffff800027bd5820 r12 0x4000 __ALIGN_SIZE+0x3000 r13 0x3820 __ALIGN_SIZE+0x2820 r14 0xfffffd806e287b48 r15 0x1 rip 0xffffffff810078c2 memset+0x52 cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff80002a069918 ss 0x10 memset+0x52: repe stosq %es:(%rdi) ddb{0}> show proc PROC (syslogd) tid=335385 pid=58455 tcnt=1 stat=onproc flags process=1100010 proc=0 runpri=17, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffffd450,0xffff8000ffffca40 process=0xffff8000ffff9fc8 user=0xffff80002a065000, vmspace=0xfffffd80787ed530 estcpu=0, cpticks=5, pctcpu=0.15, user=1, sys=36, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 53054 397118 95599 0 2 0 syz-executor 53054 74405 95599 0 2 0x4000000 syz-executor 17760 307445 51400 0 2 0x100000 sh 9294 387740 76300 0 2 0 syz-executor 9294 426070 76300 0 2 0x4000000 syz-executor 51400 63692 94365 0 3 0x10008a sigsusp sh 3466 365336 27845 0 2 0 syz-executor 3466 341435 27845 0 3 0x4000080 ttyout syz-executor 3466 47231 27845 0 3 0x4000080 ttyout syz-executor 3466 165825 27845 0 3 0x4000080 fsleep syz-executor 87442 100930 49702 0 2 0 syz-executor 87442 279639 49702 0 3 0x4000080 fsleep syz-executor 87442 67480 49702 0 2 0x4000000 syz-executor 8464 206665 97886 0 2 0 syz-executor 8464 423364 97886 0 3 0x4000080 fsleep syz-executor 8464 176257 97886 0 3 0x4000080 fsleep syz-executor 94365 253466 62381 0 3 0x82 wait syz-executor 67513 100946 0 0 3 0x14200 acct acct 76300 115656 62381 0 2 0x482 syz-executor 97150 281256 62381 0 2 0x482 syz-executor 49702 39680 62381 0 2 0x482 syz-executor 95599 464399 62381 0 2 0x482 syz-executor 66673 171832 62381 0 3 0x82 piperd syz-executor 97886 320291 62381 0 2 0x482 syz-executor 27845 428618 62381 0 2 0x482 syz-executor 31642 467140 0 0 3 0x14280 nfsidl nfsio 20913 327951 0 0 3 0x14280 nfsidl nfsio 7421 142282 0 0 3 0x14280 nfsidl nfsio 21530 393702 0 0 3 0x14280 nfsidl nfsio 62820 438557 0 0 3 0x14280 nfsidl nfsio 35616 293554 0 0 3 0x14280 nfsidl nfsio 70618 521199 0 0 3 0x14280 nfsidl nfsio 97230 127014 0 0 3 0x14280 nfsidl nfsio 96264 373514 0 0 3 0x14280 nfsidl nfsio 57930 283903 0 0 3 0x14280 nfsidl nfsio 54667 428580 0 0 3 0x14280 nfsidl nfsio 54953 406439 0 0 3 0x14280 nfsidl nfsio 66631 202238 0 0 3 0x14280 nfsidl nfsio 35139 99738 0 0 3 0x14280 nfsidl nfsio 14483 205966 0 0 3 0x14280 nfsidl nfsio 19911 511256 0 0 3 0x14280 nfsidl nfsio 57404 456793 0 0 3 0x14280 nfsidl nfsio 2696 284177 0 0 3 0x14280 nfsidl nfsio 50942 193498 0 0 3 0x14280 nfsidl nfsio 27810 310133 0 0 3 0x14280 nfsidl nfsio 33674 178910 1 0 3 0x100083 ttyin getty 22626 469345 0 0 3 0x14200 bored sosplice 62381 483785 44383 0 2 0x2 syz-executor 44383 28846 59187 0 3 0x10008a sigsusp ksh 59187 217814 88197 0 3 0x98 kqread sshd-session 88197 74424 94291 0 3 0x92 kqread sshd-session 94291 226862 1 0 3 0x88 kqread sshd 72197 59582 91117 74 3 0x1100092 bpf pflogd 91117 250392 1 0 3 0x80 sbwait pflogd *58455 335385 66635 73 7 0x1100010 syslogd 66635 139832 1 0 3 0x100082 sbwait syslogd 59750 144363 1 0 3 0x100080 kqread resolvd 77440 472543 73786 77 3 0x100092 kqread dhcpleased 8168 483900 73786 77 3 0x100092 kqread dhcpleased 73786 86094 1 0 3 0x80 kqread dhcpleased 3394 329869 0 0 3 0x14200 bored smr 37457 501584 0 0 2 0x14200 zerothread 56395 359790 0 0 3 0x14200 aiodoned aiodoned 10911 438028 0 0 3 0x14200 syncer update 47590 74057 0 0 3 0x14200 cleaner cleaner 68963 326085 0 0 3 0x14200 reaper reaper 37521 12032 0 0 3 0x14200 pgdaemon pagedaemon 79253 481983 0 0 3 0x14200 bored viomb 71226 480296 0 0 3 0x40014200 acpi0 acpi0 25118 11428 0 0 7 0x40014200 idle1 41999 404307 0 0 3 0x14200 bored softnet3 93579 309327 0 0 3 0x14200 bored softnet2 14767 371742 0 0 3 0x14200 bored softnet1 88208 143983 0 0 3 0x14200 bored softnet0 35248 492962 0 0 3 0x14200 bored systqmp 96013 104692 0 0 3 0x14200 bored systq 5688 209108 0 0 3 0x14200 tmoslp softclockmp 11250 92133 0 0 2 0x40014200 softclock 25351 69237 0 0 3 0x40014200 idle0 1 162998 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 58455 (syslogd) thread 0xffff8000ffffd6d8 (335385) exclusive rrwlock inode r = 0 (0xfffffd806e4cc1b0) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 vn_write+0x18d sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x23c sys/kern/sys_generic.c:380 #7 sys_writev+0xd8 sys/kern/sys_generic.c:327 #8 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #8 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83553178) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 vn_write+0x4e sys/kern/vfs_vnops.c:393 #2 dofilewritev+0x23c sys/kern/sys_generic.c:380 #3 sys_writev+0xd8 sys/kern/sys_generic.c:327 #4 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #4 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #5 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10209 10220K 10352K 166960K 12033 0 pcb 17 14K 16K 166960K 217 0 rtable 222 7K 7K 166960K 847 0 pf 35 17K 21K 166960K 94 0 ifaddr 40 7K 8K 166960K 110 0 ifgroup 53 2K 2K 166960K 128 0 sysctl 2 0K 0K 166960K 2 0 counters 64 36K 36K 166960K 106 0 ioctlops 0 0K 4K 166960K 1542 0 iov 1 0K 24K 166960K 25 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1398 88K 88K 166960K 1974 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 11 0K 0K 166960K 19 0 dirhash 12 2K 3K 166960K 33 0 ACPI 1690 195K 286K 166960K 12418 0 file desc 18 65K 89K 166960K 813 0 sigio 0 0K 0K 166960K 8 0 proc 72 91K 140K 166960K 952 0 subproc 104 6K 6K 166960K 286 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 70 0 in_multi 88 6K 7K 166960K 262 0 ether_multi 1 0K 0K 166960K 2 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 85 387K 387K 166960K 85 0 exec 0 0K 1K 166960K 659 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 241 73K 93K 166960K 8215 0 UVM aobj 49 2K 2K 166960K 53 0 pinsyscall 43 86K 103K 166960K 2241 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 34 0 NDP 12 0K 1K 166960K 76 0 temp 75 6824K 6890K 166960K 39035 0 kqueue 13 20K 27K 166960K 90 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 87 0 84 1 0 1 1 0 8 0 rtentry 112 262 0 160 4 0 4 4 0 8 0 unpcb 144 404 0 387 5 3 2 4 0 8 1 syncache 336 6 0 6 4 3 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 808 153 0 148 2 0 2 2 0 8 1 arp 120 44 0 28 1 0 1 1 0 8 0 inpcb 336 736 0 727 13 6 7 7 0 8 5 nd6 136 71 0 47 1 0 1 1 0 8 0 pkpcb 40 6 0 6 2 1 1 1 0 8 1 kcovpl 48 22 0 14 1 0 1 1 0 8 0 ppxss 1168 6 0 5 3 2 1 1 0 8 0 pffrag 232 7 0 1 1 0 1 1 0 482 0 pffrnode 88 7 0 1 1 0 1 1 0 8 0 pffrent 40 42 0 36 1 0 1 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 pfrktable 1344 1 0 1 1 1 0 1 0 8 0 pftag 88 1 0 1 1 1 0 1 0 8 0 pfstitem 24 71 0 30 1 0 1 1 0 8 0 pfstkey 128 71 0 30 2 0 2 2 0 8 0 pfstate 376 71 0 30 5 0 5 5 0 8 0 pfrule 1344 24 0 18 2 0 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1040 0 623 31 2 29 29 0 8 2 art_table 32 1041 0 623 4 0 4 4 0 8 0 art_node 16 261 0 168 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 5 1 0 1 1 0 8 0 semapl 112 15 0 6 1 0 1 1 0 8 0 shmpl 112 50 0 4 2 0 2 2 0 8 0 dirhash 1024 31 0 14 3 0 3 3 0 8 0 dino2pl 256 2531 0 999 96 0 96 96 0 8 0 ffsino 272 2531 0 999 104 1 103 103 0 8 0 nchpl 144 3423 0 1708 64 0 64 64 0 8 0 uvmvnodes 80 3011 0 0 62 0 62 62 0 8 0 vnodes 216 3011 0 0 168 0 168 168 0 8 0 namei 1024 13132 0 13132 3 2 1 2 0 8 1 percpumem 16 67 0 21 1 0 1 1 0 8 0 kstatmem 264 66 0 42 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 216 14925 0 14925 10 9 1 8 1 8 1 plimitpl 152 112 0 94 1 0 1 1 0 8 0 sigapl 424 1111 0 1039 9 0 9 9 0 8 0 futexpl 64 7867 0 7863 2 1 1 1 0 8 0 knotepl 120 555 0 0 17 0 17 17 0 8 0 kqueuepl 216 129 0 120 2 1 1 2 0 8 0 pipepl 320 195 0 168 3 0 3 3 0 8 0 fdescpl 496 1069 0 1037 6 1 5 5 0 8 0 filepl 152 5588 0 5333 18 5 13 16 0 8 3 lockfpl 104 269 0 266 1 0 1 1 0 8 0 lockfspl 48 115 0 112 1 0 1 1 0 8 0 sessionpl 144 40 0 31 1 0 1 1 0 8 0 pgrppl 48 70 0 53 1 0 1 1 0 8 0 ucredpl 104 905 0 892 1 0 1 1 0 8 0 zombiepl 144 1040 0 1039 1 0 1 1 0 8 0 processpl 1160 1111 0 1039 6 0 6 6 0 8 0 procpl 648 1847 0 1766 8 0 8 8 0 8 0 srpgc 96 6 0 6 2 2 0 1 0 8 0 sosppl 168 2 0 2 1 1 0 1 0 8 0 sockpl 664 1234 0 1205 15 6 9 9 0 8 6 mcl64k 65536 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 223 0 0 28 0 28 28 0 8 1 mtagpl 96 11 0 0 1 0 1 1 0 8 0 mbufpl 256 324 0 0 19 0 19 19 0 8 0 bufpl 280 6746 0 572 442 0 442 442 0 8 0 anonpl 24 254305 0 245600 116 6 110 110 0 185 33 amapchunkpl 152 27310 0 26733 54 9 45 45 0 158 21 amappl16 200 6454 0 6193 28 1 27 27 0 8 0 amappl15 192 8 0 8 1 1 0 1 0 8 0 amappl14 184 159 0 147 1 0 1 1 0 8 0 amappl13 176 11 0 11 1 1 0 1 0 8 0 amappl12 168 1921 0 1887 3 1 2 2 0 8 0 amappl11 160 54 0 40 1 0 1 1 0 8 0 amappl10 152 11 0 11 2 2 0 1 0 8 0 amappl9 144 144 0 144 1 1 0 1 0 8 0 amappl8 136 26 0 22 1 0 1 1 0 8 0 amappl7 128 135 0 122 1 0 1 1 0 8 0 amappl6 120 300 0 298 1 0 1 1 0 8 0 amappl5 112 186 0 174 1 0 1 1 0 8 0 amappl4 104 361 0 342 1 0 1 1 0 8 0 amappl3 96 5273 0 5164 4 0 4 4 0 8 0 amappl2 88 900 0 830 2 0 2 2 0 8 0 amappl1 80 11139 0 10578 17 3 14 14 0 8 0 amappl 88 7678 0 7499 5 0 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 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 7 0 7 2 2 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 52 0 4 1 0 1 1 0 8 0 uaddrrnd 24 1069 0 1037 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1069 0 1037 1 0 1 1 0 8 0 vmmpekpl 168 9515 0 9465 3 0 3 3 0 8 0 vmmpepl 168 77881 0 75798 107 1 106 106 0 357 9 vmsppl 440 1068 0 1037 6 2 4 5 0 8 0 rwobjpl 56 28283 0 24052 63 1 62 62 0 8 0 pdppl 4096 2145 0 2074 123 50 73 83 0 8 2 pvpl 32 50526 0 0 408 0 408 408 0 265 0 pmappl 248 1068 0 1037 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 436 0 68 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace memset() at memset+0x52 ffs_write(ffff80002a069c00) at ffs_write+0xbab sys/ufs/ffs/ffs_vnops.c:401 VOP_WRITE(fffffd806e287b48,ffff80002a069e20,3,fffffd807f7d3a90) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 vn_write(fffffd806f8a48e8,ffff80002a069e20,0) at vn_write+0x1d1 sys/kern/vfs_vnops.c:408 dofilewritev(ffff8000ffffd6d8,e,ffff80002a069e20,0,ffff80002a069ee0) at dofilewritev+0x23c sys/kern/sys_generic.c:380 sys_writev(ffff8000ffffd6d8,ffff80002a069f90,ffff80002a069ee0) at sys_writev+0xd8 sys/kern/sys_generic.c:327 syscall(ffff80002a069f90) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a069f90) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7400ea7f7090, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 acpicpu_idle() at acpicpu_idle+0x41e sys/dev/acpi/acpicpu.c:1219 sched_idle(ffff800029b7bff0) at sched_idle+0x558 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 acpicpu_idle() at acpicpu_idle+0x41e sys/dev/acpi/acpicpu.c:1219 sched_idle(ffff800029b7bff0) at sched_idle+0x558 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: -5