uvm_fault(0xffffffff8354a888, 0xffff800013cc3300, 0, 2) -> d kernel: page fault trap, code=2 Stopped at memcpy+0x19: repe movsq (%rsi),%es:(%rdi) TID PID UID PRFLAGS PFLAGS CPU COMMAND 459054 65534 0 0 0 0 syz-executor *208166 65150 73 0x1100010 0 1K syslogd memcpy() at memcpy+0x19 VOP_FSYNC(fffffd806e2818c0,fffffd807f7d3958,1,ffff8000ffffd960) at VOP_FSYNC+0x108 sys/kern/vfs_vops.c:311 sys_fsync(ffff8000ffffd960,ffff80002a06ac10,ffff80002a06ab60) at sys_fsync+0x16f sys/kern/vfs_syscalls.c:2926 syscall(ffff80002a06ac10) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a06ac10) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f17230b6b80, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xffffffff8354a888, 0xffff800013cc3300, 0, 2) -> d ddb{1}> trace memcpy() at memcpy+0x19 VOP_FSYNC(fffffd806e2818c0,fffffd807f7d3958,1,ffff8000ffffd960) at VOP_FSYNC+0x108 sys/kern/vfs_vops.c:311 sys_fsync(ffff8000ffffd960,ffff80002a06ac10,ffff80002a06ab60) at sys_fsync+0x16f sys/kern/vfs_syscalls.c:2926 syscall(ffff80002a06ac10) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a06ac10) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f17230b6b80, count: -5 ddb{1}> show registers rdi 0xffff800013cc3300 rsi 0xfffffd806e70fb00 rbp 0xffff80002a06aa50 rbx 0x1 rdx 0x100 rcx 0x20 rax 0x4c1 r8 0xffffffffffffffff r9 0x4bf00 acpi_pdirpa+0x37d71 r10 0xbf8fd9d8c66cd400 r11 0xffff800013cc3300 r12 0xfffffd806e4c8338 r13 0xfffffd806fbb16a0 r14 0x1 r15 0xffff800000a5f000 rip 0xffffffff81b8ca89 memcpy+0x19 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff80002a06a9e8 ss 0x10 memcpy+0x19: repe movsq (%rsi),%es:(%rdi) ddb{1}> show proc PROC (syslogd) tid=208166 pid=65150 tcnt=1 stat=onproc flags process=1100010 proc=0 runpri=17, usrpri=54, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffffd450,0xffff8000ffffccc8 process=0xffff8000ffff8498 user=0xffff80002a065000, vmspace=0xfffffd806ed928a0 estcpu=4, cpticks=9, pctcpu=3.21, user=12, sys=1951, intr=1297 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 63119 498294 54572 0 2 0 syz-executor 63119 474664 54572 0 2 0x4000000 syz-executor 93479 426286 22625 0 2 0 syz-executor 93479 219355 22625 0 3 0x4000080 fsleep syz-executor 65534 459054 71110 0 7 0 syz-executor 65534 440064 71110 0 2 0x4000080 syz-executor 16338 266436 65746 0 2 0x2 sh 58684 130298 9317 60928 2 0x10 syz-executor 58684 210267 9317 60928 3 0x4000090 fsleep syz-executor 82653 205776 64610 -1 2 0x10 syz-executor 82653 497167 64610 -1 3 0x4000090 fsleep syz-executor 19071 229452 18463 0 2 0 syz-executor 19071 364516 18463 0 3 0x4000080 rest syz-executor 19071 92999 18463 0 2 0x4000000 syz-executor 9317 300823 64694 0 3 0x82 nanoslp syz-executor 65746 122539 64694 0 3 0x82 wait syz-executor 22625 397359 64694 0 3 0x82 nanoslp syz-executor 71110 363981 64694 0 3 0x82 nanoslp syz-executor 38767 440332 64694 0 3 0x82 nanoslp syz-executor 18463 77728 64694 0 3 0x82 nanoslp syz-executor 64610 54948 64694 0 3 0x82 nanoslp syz-executor 54572 276276 64694 0 3 0x82 nanoslp syz-executor 85225 502868 0 0 3 0x14280 nfsidl nfsio 94502 402638 0 0 3 0x14280 nfsidl nfsio 32991 514123 0 0 3 0x14280 nfsidl nfsio 57014 213086 0 0 3 0x14280 nfsidl nfsio 3838 111983 0 0 3 0x14280 nfsidl nfsio 63372 92111 0 0 3 0x14280 nfsidl nfsio 16351 380725 0 0 3 0x14280 nfsidl nfsio 1650 40526 0 0 3 0x14280 nfsidl nfsio 13398 212372 0 0 3 0x14280 nfsidl nfsio 69572 49003 0 0 3 0x14280 nfsidl nfsio 23934 508348 0 0 3 0x14280 nfsidl nfsio 46488 132584 0 0 3 0x14280 nfsidl nfsio 15805 337211 0 0 3 0x14280 nfsidl nfsio 81595 438415 0 0 3 0x14280 nfsidl nfsio 86744 208995 0 0 3 0x14280 nfsidl nfsio 47547 7549 0 0 3 0x14280 nfsidl nfsio 31505 253212 0 0 3 0x14280 nfsidl nfsio 2916 188380 0 0 3 0x14280 nfsidl nfsio 61578 318473 0 0 3 0x14280 nfsidl nfsio 21244 240596 0 0 3 0x14280 nfsidl nfsio 58810 301668 1 0 3 0x100083 ttyin getty 40341 275139 0 0 3 0x14200 bored sosplice 64694 94094 50395 0 3 0x82 kqread syz-executor 50395 198111 91206 0 3 0x10008a sigsusp ksh 91206 49510 95490 0 3 0x98 kqread sshd-session 95490 135744 31106 0 3 0x92 kqread sshd-session 31106 279413 1 0 3 0x88 kqread sshd 35374 261987 52706 74 3 0x1100092 bpf pflogd 52706 352411 1 0 3 0x80 sbwait pflogd *65150 208166 39094 73 7 0x1100010 syslogd 39094 55013 1 0 3 0x100082 sbwait syslogd 10267 498850 1 0 3 0x100080 kqread resolvd 9205 168783 30114 77 3 0x100092 kqread dhcpleased 65689 265382 30114 77 3 0x100092 kqread dhcpleased 30114 372524 1 0 3 0x80 kqread dhcpleased 33338 466269 0 0 3 0x14200 bored smr 91297 426239 0 0 2 0x14200 zerothread 79235 112815 0 0 3 0x14200 aiodoned aiodoned 34417 338984 0 0 3 0x14200 syncer update 31250 391194 0 0 3 0x14200 cleaner cleaner 50864 76111 0 0 3 0x14200 reaper reaper 15910 310317 0 0 3 0x14200 pgdaemon pagedaemon 49366 130345 0 0 3 0x14200 bored viomb 63716 320940 0 0 3 0x40014200 acpi0 acpi0 17850 23731 0 0 3 0x40014200 idle1 65583 340752 0 0 3 0x14200 bored softnet3 78251 237095 0 0 3 0x14200 bored softnet2 75085 383571 0 0 3 0x14200 bored softnet1 49641 241571 0 0 3 0x14200 bored softnet0 75817 378325 0 0 3 0x14200 bored systqmp 27110 230468 0 0 3 0x14200 bored systq 38115 179434 0 0 3 0x14200 tmoslp softclockmp 85451 34022 0 0 3 0x40014200 tmoslp softclock 18481 253964 0 0 3 0x40014200 idle0 1 249598 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 63119 (syz-executor) thread 0xffff8000321862b8 (474664) exclusive rwlock vmmaplk r = 0 (0xfffffd806bd830f0) #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 vm_map_lock_ln+0x143 sys/uvm/uvm_map.c:5252 #3 uvmfault_lookup+0xe8 sys/uvm/uvm_fault.c:1779 #4 uvm_fault_check+0x83e uvmfault_amapcopy sys/uvm/uvm_fault.c:236 [inline] #4 uvm_fault_check+0x83e sys/uvm/uvm_fault.c:710 #5 uvm_fault+0x112 sys/uvm/uvm_fault.c:600 #6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #7 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #8 recall_trap+0x8 Process 19071 (syz-executor) thread 0xffff800032198028 (92999) exclusive rwlock vmmaplk r = 0 (0xfffffd806ce8dd10) #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 vm_map_lock_ln+0x143 sys/uvm/uvm_map.c:5252 #3 uvmfault_lookup+0xe8 sys/uvm/uvm_fault.c:1779 #4 uvm_fault_check+0x83e uvmfault_amapcopy sys/uvm/uvm_fault.c:236 [inline] #4 uvm_fault_check+0x83e sys/uvm/uvm_fault.c:710 #5 uvm_fault+0x112 sys/uvm/uvm_fault.c:600 #6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #7 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #8 recall_trap+0x8 Process 65150 (syslogd) thread 0xffff8000ffffd960 (208166) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83561d10) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 __mp_acquire_count+0x58 #2 mi_switch+0x658 sys/kern/sched_bsd.c:460 #3 sleep_finish+0x219 sys/kern/kern_synch.c:416 #4 vwaitforio+0xd2 #5 ffs_fsync+0x376 sys/ufs/ffs/ffs_vnops.c:482 #6 VOP_FSYNC+0x108 sys/kern/vfs_vops.c:311 #7 sys_fsync+0x16f sys/kern/vfs_syscalls.c:2926 #8 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #8 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806e4c83d0) #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 sys_fsync+0x152 sys/kern/vfs_syscalls.c:2926 #6 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #6 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10205 10114K 10437K 166960K 12568 0 pcb 18 16K 18K 166960K 194 0 rtable 209 7K 8K 166960K 2134 0 pf 41 18K 26K 166960K 231 0 ifaddr 42 7K 8K 166960K 291 0 ifgroup 64 2K 2K 166960K 333 0 sysctl 4 1K 1K 166960K 4 0 counters 68 36K 36K 166960K 206 0 ioctlops 0 0K 4K 166960K 1617 0 iov 0 0K 20K 166960K 59 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1425 90K 90K 166960K 2946 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 15 0 VM map 2 1K 1K 166960K 2 0 sem 12 1K 1K 166960K 44 0 dirhash 12 2K 2K 166960K 33 0 ACPI 1690 195K 286K 166960K 12418 0 file desc 18 65K 89K 166960K 1935 0 sigio 0 0K 0K 166960K 23 0 proc 75 103K 128K 166960K 2171 0 subproc 104 6K 6K 166960K 819 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 154 0 in_multi 86 6K 7K 166960K 744 0 ether_multi 1 0K 0K 166960K 8 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 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 1264 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 246 73K 87K 166960K 16648 0 UVM aobj 29 4K 4K 166960K 30 0 pinsyscall 43 86K 104K 166960K 4468 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 56 0 NDP 18 0K 2K 166960K 211 0 temp 75 6824K 6892K 166960K 64342 0 kqueue 14 22K 27K 166960K 168 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> 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 120 239 0 236 2 1 1 2 0 8 0 rtentry 112 736 0 644 4 1 3 4 0 8 0 unpcb 144 1332 0 1315 11 10 1 8 0 8 0 syncache 336 10 0 10 3 3 0 1 0 8 0 tcpqe 32 3 0 3 2 2 0 1 0 8 0 tcpcb 808 689 0 685 27 26 1 14 0 8 0 arp 120 131 0 113 1 0 1 1 0 8 0 ipq 40 4 0 3 1 0 1 1 0 8 0 ipqe 40 5 0 4 1 0 1 1 0 8 0 inpcb 336 1788 0 1779 30 28 2 12 0 8 0 nd6 136 195 0 174 1 0 1 1 0 8 0 pkpcb 40 35 0 35 2 2 0 1 0 8 0 kcovpl 48 63 0 55 1 0 1 1 0 8 0 ppxss 1168 7 0 7 3 3 0 1 0 8 0 pffrag 232 1 0 1 1 1 0 1 0 482 0 pffrnode 88 1 0 1 1 1 0 1 0 8 0 pffrent 40 1 0 1 1 1 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 43 0 39 1 0 1 1 0 8 0 pfstkey 128 45 0 39 2 0 2 2 0 8 0 pfstate 376 42 0 39 4 2 2 4 0 8 0 pfrule 1344 29 0 24 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 2962 0 2580 35 8 27 30 0 8 3 art_table 32 2964 0 2580 4 0 4 4 0 8 0 art_node 16 732 0 649 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 4 3 2 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 42 0 32 1 0 1 1 0 8 0 shmpl 112 27 0 1 1 0 1 1 0 8 0 dirhash 1024 31 0 14 3 0 3 3 0 8 0 dino2pl 256 3439 0 1826 101 0 101 101 0 8 0 ffsino 272 3439 0 1826 109 1 108 108 0 8 0 nchpl 144 5066 0 3300 66 0 66 66 0 8 0 uvmvnodes 80 4783 0 0 98 0 98 98 0 8 0 vnodes 216 4783 0 0 266 0 266 266 0 8 0 namei 1024 23510 0 23510 7 6 1 2 0 8 1 percpumem 16 117 0 69 1 0 1 1 0 8 0 kstatmem 264 166 0 138 2 0 2 2 0 8 0 scsiplug 72 2 0 2 2 2 0 1 0 8 0 scxspl 216 34296 0 34296 14 13 1 8 1 8 1 plimitpl 152 316 0 298 1 0 1 1 0 8 0 sigapl 424 2154 0 2083 11 2 9 9 0 8 0 futexpl 64 15235 0 15232 4 3 1 1 0 8 0 knotepl 120 642 0 0 18 1 17 17 0 8 0 kqueuepl 216 384 0 374 7 6 1 5 0 8 0 pipepl 320 384 0 357 3 0 3 3 0 8 0 fdescpl 496 2114 0 2082 5 0 5 5 0 8 0 filepl 152 11801 0 11550 29 18 11 19 0 8 0 lockfpl 104 635 0 633 2 1 1 2 0 8 0 lockfspl 48 234 0 232 1 0 1 1 0 8 0 sessionpl 144 85 0 76 1 0 1 1 0 8 0 pgrppl 48 161 0 144 1 0 1 1 0 8 0 ucredpl 104 1435 0 1418 1 0 1 1 0 8 0 zombiepl 144 2366 0 2365 2 1 1 1 0 8 0 processpl 1160 2154 0 2083 7 1 6 6 0 8 0 procpl 648 3879 0 3801 9 1 8 8 0 8 1 srpgc 96 4 0 4 2 1 1 1 0 8 1 sosppl 168 10 0 10 2 2 0 1 0 8 0 sockpl 664 3399 0 3370 42 38 4 18 0 8 0 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 242 0 0 30 0 30 30 0 8 0 mtagpl 96 84 0 0 3 0 3 3 0 8 0 mbufpl 256 382 0 0 22 0 22 22 0 8 0 bufpl 280 8607 0 2098 466 0 466 466 0 8 0 anonpl 24 326664 0 321981 118 39 79 88 0 185 32 amapchunkpl 152 53818 0 53243 67 30 37 46 0 158 12 amappl16 200 5488 0 5470 28 25 3 14 0 8 0 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 244 0 232 1 0 1 1 0 8 0 amappl13 176 8 0 8 1 1 0 1 0 8 0 amappl12 168 3632 0 3600 4 2 2 3 0 8 0 amappl11 160 57 0 43 1 0 1 1 0 8 0 amappl10 152 8 0 8 1 1 0 1 0 8 0 amappl9 144 196 0 196 3 3 0 1 0 8 0 amappl8 136 23 0 20 1 0 1 1 0 8 0 amappl7 128 227 0 215 1 0 1 1 0 8 0 amappl6 120 725 0 722 1 0 1 1 0 8 0 amappl5 112 360 0 349 1 0 1 1 0 8 0 amappl4 104 503 0 483 1 0 1 1 0 8 0 amappl3 96 10194 0 10080 5 1 4 4 0 8 0 amappl2 88 1521 0 1451 2 0 2 2 0 8 0 amappl1 80 17736 0 17166 15 1 14 14 0 8 0 amappl 88 15732 0 15550 5 0 5 5 0 92 0 dma32768 32768 1 0 1 1 1 0 1 0 8 0 dma16384 16384 1 0 1 1 1 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 1 0 1 1 1 0 1 0 8 0 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma256 256 7 0 7 2 2 0 1 0 8 0 dma128 128 255 0 255 2 2 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 8 0 8 2 2 0 1 0 8 0 dma16 16 20 0 19 1 0 1 1 0 8 0 aobjpl 72 29 0 1 1 0 1 1 0 8 0 uaddrrnd 24 2114 0 2082 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2114 0 2082 1 0 1 1 0 8 0 vmmpekpl 168 17951 0 17902 3 0 3 3 0 8 0 vmmpepl 168 136481 0 134611 107 22 85 93 0 357 1 vmsppl 440 2113 0 2082 6 2 4 5 0 8 0 rwobjpl 56 44166 0 38418 85 3 82 82 0 8 0 pdppl 4096 4235 0 4164 208 133 75 83 0 8 4 pvpl 32 47047 0 0 380 1 379 379 0 265 0 pmappl 248 2113 0 2082 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 591 0 214 12 0 12 12 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83454ff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:589 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:158 __mp_lock(ffffffff83561b08) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83561b08) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 softintr_dispatch(0) at softintr_dispatch+0x5b sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x79a6dec18ae0, count: 8 ddb{0}> trace x86_ipi_db(ffffffff83454ff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:589 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:158 __mp_lock(ffffffff83561b08) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83561b08) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 softintr_dispatch(0) at softintr_dispatch+0x5b sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x79a6dec18ae0, count: -7 ddb{0}> machine ddbcpu 1 Stopped at memcpy+0x19: repe movsq (%rsi),%es:(%rdi) memcpy() at memcpy+0x19 VOP_FSYNC(fffffd806e2818c0,fffffd807f7d3958,1,ffff8000ffffd960) at VOP_FSYNC+0x108 sys/kern/vfs_vops.c:311 sys_fsync(ffff8000ffffd960,ffff80002a06ac10,ffff80002a06ab60) at sys_fsync+0x16f sys/kern/vfs_syscalls.c:2926 syscall(ffff80002a06ac10) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a06ac10) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f17230b6b80, count: 10 ddb{1}> trace memcpy() at memcpy+0x19 VOP_FSYNC(fffffd806e2818c0,fffffd807f7d3958,1,ffff8000ffffd960) at VOP_FSYNC+0x108 sys/kern/vfs_vops.c:311 sys_fsync(ffff8000ffffd960,ffff80002a06ac10,ffff80002a06ab60) at sys_fsync+0x16f sys/kern/vfs_syscalls.c:2926 syscall(ffff80002a06ac10) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a06ac10) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f17230b6b80, count: -5