uvm_fault(0xffffffff83508d40, 0xffff80002847378e, 0, 2) -> d kernel: page fault trap, code=2 Stopped at memset+0x49: repe stosb %es:(%rdi) TID PID UID PRFLAGS PFLAGS CPU COMMAND *388445 98070 0 0x2 0x1 1K syz-executor 44245 73170 0 0x14000 0x40000200 0 softclock memset() at memset+0x49 ffs_write(ffff80002a0f6220) at ffs_write+0xbab sys/ufs/ffs/ffs_vnops.c:401 VOP_WRITE(fffffd806f7806c8,ffff80002a0f62d8,3,fffffd807f7d3340) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002a03e7b8,fffffd806f7806c8,fffffd807f7d3340,ffff80002a0f63a8,ffff80002a0f6380) at ktrwriteraw+0x1bc sys/kern/kern_ktrace.c:682 ktrstruct(ffff80002a03e7b8,ffffffff82ffcedb,ffff80002a0f64a0,10) at ktrstruct+0x19a sys/kern/kern_ktrace.c:308 sys_nanosleep(ffff80002a03e7b8,ffff80002a0f65e0,ffff80002a0f6530) at sys_nanosleep+0x109 sys/kern/kern_time.c:292 syscall(ffff80002a0f65e0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0f65e0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x72c74ac9b1b0, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xffffffff83508d40, 0xffff80002847378e, 0, 2) -> d ddb{1}> trace memset() at memset+0x49 ffs_write(ffff80002a0f6220) at ffs_write+0xbab sys/ufs/ffs/ffs_vnops.c:401 VOP_WRITE(fffffd806f7806c8,ffff80002a0f62d8,3,fffffd807f7d3340) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002a03e7b8,fffffd806f7806c8,fffffd807f7d3340,ffff80002a0f63a8,ffff80002a0f6380) at ktrwriteraw+0x1bc sys/kern/kern_ktrace.c:682 ktrstruct(ffff80002a03e7b8,ffffffff82ffcedb,ffff80002a0f64a0,10) at ktrstruct+0x19a sys/kern/kern_ktrace.c:308 sys_nanosleep(ffff80002a03e7b8,ffff80002a0f65e0,ffff80002a0f6530) at sys_nanosleep+0x109 sys/kern/kern_time.c:292 syscall(ffff80002a0f65e0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0f65e0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x72c74ac9b1b0, count: -8 ddb{1}> show registers rdi 0xffff80002847378e rsi 0 rbp 0xffff80002a0f6140 rbx 0x978e __ALIGN_SIZE+0x878e rdx 0x2 rcx 0x2 rax 0 r8 0x70 r9 0xffff80002a0f60a0 r10 0xd31b150a0fb83a1a r11 0xffff80002847378e r12 0x1800 __ALIGN_SIZE+0x800 r13 0x178e __ALIGN_SIZE+0x78e r14 0xfffffd806f7806c8 r15 0x1 rip 0xffffffff82762859 memset+0x49 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff80002a0f5f38 ss 0x10 memset+0x49: repe stosb %es:(%rdi) ddb{1}> show proc PROC (syz-executor) tid=388445 pid=98070 tcnt=1 stat=onproc flags process=2 proc=1 runpri=32, usrpri=85, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000fffee538,0xffff80002a03fc08 process=0xffff800029fe9228 user=0xffff80002a0f1000, vmspace=0xfffffd806bd11dc8 estcpu=35, cpticks=1, pctcpu=0.0, user=0, sys=9, intr=1 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 67138 407418 75278 0 2 0 syz-executor 67138 421078 75278 0 3 0x4000080 fsleep syz-executor 16594 258350 24573 0 3 0 futex syz-executor 16594 79568 24573 0 3 0x4000080 fsleep syz-executor 16594 84287 24573 0 3 0x4000080 fsleep syz-executor 16594 466769 24573 0 3 0x4000080 fsleep syz-executor 84677 474631 98070 0 3 0 futex syz-executor 84677 72161 98070 0 3 0x4000080 fsleep syz-executor 84677 81662 98070 0 3 0x4000000 futex syz-executor 3008 95627 71064 0 2 0 syz-executor 3008 211480 71064 0 3 0x4000000 futex syz-executor 3008 31977 71064 0 3 0x4000080 fsleep syz-executor 18981 35785 17463 0 3 0 futex syz-executor 18981 217565 17463 0 3 0x4000080 fsleep syz-executor 18981 328442 17463 0 3 0x4000080 fsleep syz-executor 55910 497900 79979 0 2 0 syz-executor 55910 270601 79979 0 3 0x4000000 futex syz-executor 55910 337147 79979 0 3 0x4000000 futex syz-executor 55910 482727 79979 0 3 0x4000080 fsleep syz-executor 72159 25716 99782 0 2 0x10 syz-executor 72159 34280 99782 0 3 0x4000010 futex syz-executor 72159 405143 99782 0 3 0x4000010 futex syz-executor 72159 188325 99782 0 2 0x4000010 syz-executor 9058 395008 1 0 3 0x100083 ttyin getty 96292 144583 0 0 3 0x14280 nfsidl nfsio 17132 236650 0 0 3 0x14280 nfsidl nfsio 2674 45633 0 0 3 0x14280 nfsidl nfsio 23464 394357 0 0 3 0x14280 nfsidl nfsio 126 20853 0 0 3 0x14280 nfsidl nfsio 4564 11679 0 0 3 0x14280 nfsidl nfsio 14082 22790 0 0 3 0x14280 nfsidl nfsio 14825 10706 0 0 3 0x14280 nfsidl nfsio 32329 513052 0 0 3 0x14280 nfsidl nfsio 11068 110407 0 0 3 0x14280 nfsidl nfsio 22807 477019 0 0 3 0x14280 nfsidl nfsio 50135 464644 0 0 3 0x14280 nfsidl nfsio 88117 185851 0 0 3 0x14280 nfsidl nfsio 23933 303793 0 0 3 0x14280 nfsidl nfsio 44109 89109 0 0 3 0x14280 nfsidl nfsio 3328 14648 0 0 3 0x14280 nfsidl nfsio 12208 318002 0 0 3 0x14280 nfsidl nfsio 43715 370563 0 0 3 0x14280 nfsidl nfsio 71809 224673 0 0 3 0x14280 nfsidl nfsio 66515 50533 0 0 3 0x14280 nfsidl nfsio 75278 270294 95076 0 3 0x82 nanoslp syz-executor 71064 253613 95076 0 2 0x482 syz-executor 24573 181755 95076 0 2 0x482 syz-executor 79979 15278 95076 0 2 0x482 syz-executor 17463 123166 95076 0 2 0x482 syz-executor 99782 359176 95076 0 2 0x482 syz-executor *98070 388445 95076 0 7 0x3 syz-executor 88332 201955 0 0 3 0x14200 bored sosplice 82437 289222 0 0 3 0x14200 acct acct 95076 156502 83196 0 3 0x82 wait syz-executor 83196 208284 18049 0 3 0x10008a sigsusp ksh 18049 60899 29471 0 3 0x98 kqread sshd-session 29471 486327 52535 0 3 0x92 kqread sshd-session 52535 239714 1 0 3 0x88 kqread sshd 35504 336677 50995 74 3 0x1100092 bpf pflogd 50995 125286 1 0 3 0x80 sbwait pflogd 73057 264170 63915 73 3 0x1100090 kqread syslogd 63915 318467 1 0 3 0x100082 sbwait syslogd 97282 159935 1 0 3 0x100080 kqread resolvd 14410 431584 54580 77 3 0x100092 kqread dhcpleased 94582 493056 54580 77 3 0x100092 kqread dhcpleased 54580 132410 1 0 3 0x80 kqread dhcpleased 33606 321015 0 0 3 0x14200 bored smr 49344 128344 0 0 2 0x14200 zerothread 37385 165266 0 0 3 0x14200 aiodoned aiodoned 66802 97419 0 0 3 0x14200 syncer update 91043 61480 0 0 3 0x14200 cleaner cleaner 12513 232055 0 0 3 0x14200 reaper reaper 66576 199807 0 0 3 0x14200 pgdaemon pagedaemon 73342 47705 0 0 3 0x14200 bored viomb 5612 508089 0 0 3 0x40014200 acpi0 acpi0 66318 363135 0 0 3 0x40014200 idle1 80907 186791 0 0 3 0x14200 bored softnet3 92372 270781 0 0 3 0x14200 bored softnet2 18858 231931 0 0 3 0x14200 bored softnet1 41049 498474 0 0 3 0x14200 bored softnet0 66988 187772 0 0 3 0x14200 bored systqmp 95864 96328 0 0 3 0x14200 bored systq 5236 147089 0 0 3 0x14200 tmoslp softclockmp 73170 44245 0 0 7 0x40014200 softclock 48962 344865 0 0 3 0x40014200 idle0 1 484599 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 72159 (syz-executor) thread 0xffff80002a03f6e8 (188325) exclusive rwlock futex r = 0 (0xffffffff834106e0) #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 sys_futex+0x69 sys/kern/sys_futex.c:98 #3 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #3 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #4 Xsyscall+0x128 Process 98070 (syz-executor) thread 0xffff80002a03e7b8 (388445) exclusive rrwlock inode r = 0 (0xfffffd8073be6098) #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 vget+0x2bd sys/kern/vfs_subr.c:676 #6 ktrwriteraw+0x172 sys/kern/kern_ktrace.c:679 #7 ktrstruct+0x19a sys/kern/kern_ktrace.c:308 #8 sys_nanosleep+0x109 sys/kern/kern_time.c:292 #9 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #9 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #10 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83507c70) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 ktrstruct+0xe2 sys/kern/kern_ktrace.c:307 #2 sys_nanosleep+0x109 sys/kern/kern_time.c:292 #3 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #3 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #4 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10217 10356K 10488K 166960K 12159 0 pcb 19 12K 12K 166960K 115 0 rtable 240 8K 8K 166960K 1361 0 pf 37 18K 22K 166960K 171 0 ifaddr 43 7K 8K 166960K 183 0 ifgroup 58 2K 2K 166960K 205 0 sysctl 3 0K 0K 166960K 5 0 counters 64 36K 36K 166960K 142 0 ioctlops 0 0K 4K 166960K 1681 0 iov 0 0K 22K 166960K 112 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1403 88K 88K 166960K 2197 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 12 0K 0K 166960K 24 0 dirhash 12 2K 2K 166960K 27 0 ACPI 1690 195K 286K 166960K 12418 0 file desc 17 61K 93K 166960K 1117 0 sigio 0 0K 0K 166960K 13 0 proc 72 91K 128K 166960K 1456 0 subproc 104 6K 6K 166960K 507 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 37 0 in_multi 99 7K 7K 166960K 456 0 ether_multi 1 0K 0K 166960K 4 0 mrt 0 0K 0K 166960K 2 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 819 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 262 73K 91K 166960K 10238 0 UVM aobj 17 4K 4K 166960K 20 0 pinsyscall 42 84K 106K 166960K 3021 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 27 0 NDP 12 0K 1K 166960K 131 0 temp 74 6823K 6943K 166960K 45177 0 kqueue 14 22K 28K 166960K 98 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 120 132 0 129 1 0 1 1 0 8 0 rtentry 112 481 0 371 4 0 4 4 0 8 0 unpcb 144 477 0 455 7 5 2 4 0 8 1 syncache 336 8 0 8 3 3 0 1 0 8 0 tcpcb 808 249 0 244 11 9 2 7 0 8 1 arp 120 89 0 71 1 0 1 1 0 8 0 inpcb 336 806 0 792 13 11 2 7 0 8 0 nd6 136 121 0 96 1 0 1 1 0 8 0 pkpcb 40 8 0 8 4 4 0 1 0 8 0 kcovpl 48 39 0 31 1 0 1 1 0 8 0 ppxss 1168 5 0 5 3 3 0 1 0 8 0 pfstscr 40 5 0 5 2 2 0 1 0 8 0 pffrag 232 3 0 2 2 1 1 1 0 482 0 pffrnode 88 3 0 2 2 1 1 1 0 8 0 pffrent 40 4 0 3 3 2 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 0 1 0 1 1 0 8 0 pfstitem 24 35 0 29 1 0 1 1 0 8 0 pfstkey 128 66 0 59 1 0 1 1 0 8 0 pfstate 376 50 0 45 3 1 2 3 0 8 0 pfrule 1344 29 0 22 2 0 2 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 1859 0 1393 30 0 30 30 0 8 0 art_table 32 1861 0 1393 4 0 4 4 0 8 0 art_node 16 479 0 381 1 0 1 1 0 8 0 sysvmsgpl 40 9 0 4 1 0 1 1 0 8 0 semapl 112 20 0 10 1 0 1 1 0 8 0 shmpl 112 17 0 3 1 0 1 1 0 8 0 dirhash 1024 27 0 10 3 0 3 3 0 8 0 dino2pl 256 2532 0 962 99 0 99 99 0 8 0 ffsino 272 2533 0 963 106 0 106 106 0 8 0 nchpl 144 3496 0 1771 65 0 65 65 0 8 0 uvmvnodes 80 3320 0 0 68 0 68 68 0 8 0 vnodes 216 3320 0 0 185 0 185 185 0 8 0 namei 1024 14578 0 14578 4 3 1 1 0 8 1 percpumem 16 85 0 39 1 0 1 1 0 8 0 kstatmem 264 102 0 78 2 0 2 2 0 8 0 scxspl 216 27636 0 27636 11 10 1 7 1 8 1 plimitpl 152 212 0 193 1 0 1 1 0 8 0 sigapl 424 1381 0 1310 10 1 9 9 0 8 0 futexpl 64 8368 0 8358 3 2 1 1 0 8 0 knotepl 120 605 0 0 17 0 17 17 0 8 0 kqueuepl 216 146 0 134 1 0 1 1 0 8 0 pipepl 320 261 0 234 3 0 3 3 0 8 0 fdescpl 496 1341 0 1310 8 3 5 5 0 8 0 filepl 152 6310 0 6038 17 6 11 13 0 8 0 lockfpl 104 186 0 183 1 0 1 1 0 8 0 lockfspl 48 84 0 81 1 0 1 1 0 8 0 sessionpl 144 59 0 50 1 0 1 1 0 8 0 pgrppl 48 114 0 97 1 0 1 1 0 8 0 ucredpl 104 727 0 713 1 0 1 1 0 8 0 zombiepl 144 1354 0 1353 1 0 1 1 0 8 0 processpl 1160 1381 0 1310 7 1 6 6 0 8 0 procpl 648 2297 0 2210 8 0 8 8 0 8 0 srpgc 96 2 0 2 1 1 0 1 0 8 0 sosppl 168 2 0 2 1 1 0 1 0 8 0 sockpl 664 1431 0 1392 15 10 5 9 0 8 1 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 248 0 0 31 0 31 31 0 8 0 mtagpl 96 42 0 0 2 0 2 2 0 8 0 mbufpl 256 347 0 0 18 0 18 18 0 8 0 bufpl 280 9299 0 3125 442 0 442 442 0 8 0 anonpl 24 291021 0 286606 112 60 52 76 0 185 10 amapchunkpl 152 33114 0 32489 59 25 34 42 0 158 6 amappl16 200 7128 0 7099 55 43 12 15 0 8 7 amappl15 192 13 0 13 1 1 0 1 0 8 0 amappl14 184 192 0 180 1 0 1 1 0 8 0 amappl13 176 17 0 17 1 1 0 1 0 8 0 amappl12 168 2484 0 2453 4 2 2 3 0 8 0 amappl11 160 54 0 40 1 0 1 1 0 8 0 amappl10 152 13 0 13 1 1 0 1 0 8 0 amappl9 144 135 0 133 1 0 1 1 0 8 0 amappl8 136 25 0 22 1 0 1 1 0 8 0 amappl7 128 176 0 163 1 0 1 1 0 8 0 amappl6 120 552 0 551 1 0 1 1 0 8 0 amappl5 112 271 0 260 1 0 1 1 0 8 0 amappl4 104 426 0 408 1 0 1 1 0 8 0 amappl3 96 6324 0 6198 5 1 4 4 0 8 0 amappl2 88 1158 0 1090 2 0 2 2 0 8 0 amappl1 80 13518 0 12953 15 1 14 14 0 8 0 amappl 88 9566 0 9367 6 1 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 20 0 19 1 0 1 1 0 8 0 aobjpl 72 19 0 3 1 0 1 1 0 8 0 uaddrrnd 24 1341 0 1310 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1341 0 1310 1 0 1 1 0 8 0 vmmpekpl 168 12824 0 12779 3 0 3 3 0 8 0 vmmpepl 168 92472 0 90571 120 26 94 94 0 357 2 vmsppl 440 1340 0 1310 6 2 4 5 0 8 0 rwobjpl 56 34190 0 29883 66 2 64 64 0 8 0 pdppl 4096 2689 0 2620 144 73 71 85 0 8 2 pvpl 32 32176 0 0 260 1 259 260 0 265 0 pmappl 248 1340 0 1310 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 473 0 104 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff834aaff0) 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 __mp_lock(ffffffff83507a68) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83507a68) at __mp_lock+0x192 sys/kern/kern_lock.c:144 __mp_acquire_count(ffffffff83507a68,1) at __mp_acquire_count+0x58 mi_switch() at mi_switch+0x658 sys/kern/sched_bsd.c:460 sleep_finish(0,1) at sleep_finish+0x219 sys/kern/kern_synch.c:416 msleep(ffffffff8350da40,ffffffff834523c0,0,ffffffff830e4f3f,0) at msleep+0x13b sys/kern/kern_synch.c:249 softclock_thread(ffff8000fffff1b8) at softclock_thread+0x11f sys/kern/kern_timeout.c:807 end trace frame: 0x0, count: 6 ddb{0}> trace x86_ipi_db(ffffffff834aaff0) 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 __mp_lock(ffffffff83507a68) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83507a68) at __mp_lock+0x192 sys/kern/kern_lock.c:144 __mp_acquire_count(ffffffff83507a68,1) at __mp_acquire_count+0x58 mi_switch() at mi_switch+0x658 sys/kern/sched_bsd.c:460 sleep_finish(0,1) at sleep_finish+0x219 sys/kern/kern_synch.c:416 msleep(ffffffff8350da40,ffffffff834523c0,0,ffffffff830e4f3f,0) at msleep+0x13b sys/kern/kern_synch.c:249 softclock_thread(ffff8000fffff1b8) at softclock_thread+0x11f sys/kern/kern_timeout.c:807 end trace frame: 0x0, count: -9 ddb{0}> machine ddbcpu 1 Stopped at memset+0x49: repe stosb %es:(%rdi) memset() at memset+0x49 ffs_write(ffff80002a0f6220) at ffs_write+0xbab sys/ufs/ffs/ffs_vnops.c:401 VOP_WRITE(fffffd806f7806c8,ffff80002a0f62d8,3,fffffd807f7d3340) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002a03e7b8,fffffd806f7806c8,fffffd807f7d3340,ffff80002a0f63a8,ffff80002a0f6380) at ktrwriteraw+0x1bc sys/kern/kern_ktrace.c:682 ktrstruct(ffff80002a03e7b8,ffffffff82ffcedb,ffff80002a0f64a0,10) at ktrstruct+0x19a sys/kern/kern_ktrace.c:308 sys_nanosleep(ffff80002a03e7b8,ffff80002a0f65e0,ffff80002a0f6530) at sys_nanosleep+0x109 sys/kern/kern_time.c:292 syscall(ffff80002a0f65e0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0f65e0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x72c74ac9b1b0, count: 7 ddb{1}> trace memset() at memset+0x49 ffs_write(ffff80002a0f6220) at ffs_write+0xbab sys/ufs/ffs/ffs_vnops.c:401 VOP_WRITE(fffffd806f7806c8,ffff80002a0f62d8,3,fffffd807f7d3340) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002a03e7b8,fffffd806f7806c8,fffffd807f7d3340,ffff80002a0f63a8,ffff80002a0f6380) at ktrwriteraw+0x1bc sys/kern/kern_ktrace.c:682 ktrstruct(ffff80002a03e7b8,ffffffff82ffcedb,ffff80002a0f64a0,10) at ktrstruct+0x19a sys/kern/kern_ktrace.c:308 sys_nanosleep(ffff80002a03e7b8,ffff80002a0f65e0,ffff80002a0f6530) at sys_nanosleep+0x109 sys/kern/kern_time.c:292 syscall(ffff80002a0f65e0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0f65e0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x72c74ac9b1b0, count: -8