uvm_fault(0xffffffff82d4db60, 0xffff80001e0e1840, 0, 2) -> d kernel: page fault trap, code=2 Stopped at memset+0x52: repe stosq %es:(%rdi) TID PID UID PRFLAGS PFLAGS CPU COMMAND 129901 38523 0 0x14000 0x200 1 reaper memset() at memset+0x52 ffs_write(ffff80002e41d4b0) at ffs_write+0x924 VOP_WRITE(fffffd806839bb10,ffff80002e41d548,23,fffffd807f7d7548) at VOP_WRITE+0xc3 sys/kern/vfs_vops.c:245 vn_rdwr(1,fffffd806839bb10,ffff80002e41d638,40,0,1,ef939320edbc486d,0,ffff8000212afd40,fffffd806839bb10) at vn_rdwr+0xed sys/kern/vfs_vnops.c:324 acct_process(ffff8000212afd40) at acct_process+0x62c sys/kern/kern_acct.c:243 exit1(ffff8000212afd40,0,0,1) at exit1+0x3b1 sys/kern/kern_exit.c:212 sys_exit(ffff8000212afd40,ffff80002e41d7c0,ffff80002e41d810) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002e41d890) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e41d890) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6fa9e6690200, count: 6 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(0xffffffff82d4db60, 0xffff80001e0e1840, 0, 2) -> d ddb{0}> trace memset() at memset+0x52 ffs_write(ffff80002e41d4b0) at ffs_write+0x924 VOP_WRITE(fffffd806839bb10,ffff80002e41d548,23,fffffd807f7d7548) at VOP_WRITE+0xc3 sys/kern/vfs_vops.c:245 vn_rdwr(1,fffffd806839bb10,ffff80002e41d638,40,0,1,ef939320edbc486d,0,ffff8000212afd40,fffffd806839bb10) at vn_rdwr+0xed sys/kern/vfs_vnops.c:324 acct_process(ffff8000212afd40) at acct_process+0x62c sys/kern/kern_acct.c:243 exit1(ffff8000212afd40,0,0,1) at exit1+0x3b1 sys/kern/kern_exit.c:212 sys_exit(ffff8000212afd40,ffff80002e41d7c0,ffff80002e41d810) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002e41d890) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e41d890) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6fa9e6690200, count: -9 ddb{0}> show registers rdi 0xffff80001e0e1840 rsi 0 rbp 0xffff80002e41d3d0 rbx 0x1 rdx 0 rcx 0xf8 rax 0 r8 0x7c0 r9 0xffff80002e41d328 r10 0x15477fbf29f1278d r11 0xffff80001e0e1840 r12 0x1a840 acpi_pdirpa+0x66a3 r13 0xfffffd806e453ab8 r14 0x3000 __ALIGN_SIZE+0x2000 r15 0xfffffd806e453aa0 rip 0xffffffff81777132 memset+0x52 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff80002e41d1d8 ss 0x10 memset+0x52: repe stosq %es:(%rdi) ddb{0}> show proc PROC (syz-executor.2) tid=497299 pid=39892 tcnt=1 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=82, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff8000212afd40 forw=0xffffffffffffffff, list=0xffff8000211f0020,0xffffffff82cb8f40 process=0xffff8000212ca5c8 user=0xffff80002e418000, vmspace=0xfffffd8066fb47c8 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 42759 53363 93030 0 2 0 syz-executor.3 42759 476568 93030 0 2 0x4000000 syz-executor.3 42759 114214 93030 0 3 0x4000080 fsleep syz-executor.3 61190 397283 503 0 3 0x80 nanoslp syz-executor.7 61190 264885 503 0 3 0x4000080 netio syz-executor.7 61190 23169 503 0 3 0x4000080 fsleep syz-executor.7 29121 522399 58134 0 2 0 syz-executor.5 29121 162059 58134 0 3 0x4000080 pipewr syz-executor.5 29121 499605 58134 0 3 0x4000080 pipewr syz-executor.5 1906 338591 16252 0 2 0 syz-executor.4 1906 420239 16252 0 3 0x4000080 fsleep syz-executor.4 10468 373419 9434 0 2 0 syz-executor.0 10468 493946 9434 0 3 0x4000080 fsleep syz-executor.0 10468 112982 9434 0 2 0x4000000 syz-executor.0 503 249078 7180 0 2 0x482 syz-executor.7 93030 464769 7180 0 2 0x482 syz-executor.3 80292 154566 1 0 3 0x100083 ttyin getty 16252 50212 7180 0 3 0x82 nanoslp syz-executor.4 40058 181051 0 0 3 0x14200 acct acct 7544 514774 7180 0 2 0x2 syz-executor.6 9434 248374 7180 0 2 0x2 syz-executor.0 66342 470716 0 0 3 0x14200 bored sosplice 58134 393518 7180 0 2 0x482 syz-executor.5 30925 83925 7180 0 3 0x82 nanoslp syz-executor.2 48373 317009 7180 0 3 0x82 nanoslp syz-executor.1 7180 112274 63734 0 3 0x2000082 wait syz-fuzzer 7180 287471 63734 0 3 0x6000082 thrsleep syz-fuzzer 7180 259391 63734 0 3 0x6000082 wait syz-fuzzer 7180 414373 63734 0 3 0x6000082 wait syz-fuzzer 7180 51718 63734 0 3 0x6000082 wait syz-fuzzer 7180 419500 63734 0 3 0x6000082 thrsleep syz-fuzzer 7180 33307 63734 0 3 0x6000082 wait syz-fuzzer 7180 60033 63734 0 3 0x6000082 kqread syz-fuzzer 7180 314407 63734 0 3 0x6000082 thrsleep syz-fuzzer 7180 408741 63734 0 3 0x6000082 thrsleep syz-fuzzer 7180 66667 63734 0 3 0x6000082 thrsleep syz-fuzzer 7180 61334 63734 0 3 0x6000082 wait syz-fuzzer 7180 450611 63734 0 3 0x6000082 wait syz-fuzzer 7180 268248 63734 0 3 0x6000082 thrsleep syz-fuzzer 7180 481308 63734 0 3 0x6000082 thrsleep syz-fuzzer 7180 222956 63734 0 3 0x6000082 wait syz-fuzzer 63734 257642 95168 0 3 0x10008a sigsusp ksh 95168 164777 9225 0 3 0x9a kqread sshd 9225 247085 1 0 3 0x88 kqread sshd 17045 327200 81993 74 3 0x1100092 bpf pflogd 81993 361487 1 0 3 0x80 netio pflogd 6313 307038 89657 73 3 0x1100090 kqread syslogd 89657 84033 1 0 3 0x100082 netio syslogd 72406 449782 1 0 3 0x100080 kqread resolvd 83139 340827 82171 77 3 0x100092 kqread dhcpleased 39987 329997 82171 77 3 0x100092 kqread dhcpleased 82171 160256 1 0 3 0x80 kqread dhcpleased 12959 102960 0 0 3 0x14200 bored smr 66669 511103 0 0 2 0x14200 zerothread 34071 308858 0 0 3 0x14200 aiodoned aiodoned 2401 331314 0 0 3 0x14200 syncer update 82722 232206 0 0 3 0x14200 cleaner cleaner 38523 129901 0 0 7 0x14200 reaper 42306 103652 0 0 3 0x14200 pgdaemon pagedaemon 55256 38471 0 0 3 0x14200 bored viomb 35815 26412 0 0 3 0x40014200 acpi0 acpi0 24300 160746 0 0 3 0x40014200 idle1 26001 157836 0 0 3 0x14200 bored softnet3 54406 413376 0 0 3 0x14200 bored softnet2 96484 236111 0 0 3 0x14200 bored softnet1 57544 240230 0 0 3 0x14200 bored softnet0 13373 326445 0 0 3 0x14200 bored systqmp 57941 159836 0 0 3 0x14200 bored systq 26776 225720 0 0 3 0x14200 tmoslp softclockmp 96300 453615 0 0 2 0x40014200 softclock 20687 19141 0 0 3 0x40014200 idle0 1 170062 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 42759 (syz-executor.3) thread 0xffff8000211f1010 (476568) exclusive rrwlock inode r = 0 (0xfffffd807e6895e8) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vn_close+0x66 sys/kern/vfs_vnops.c:292 #6 vndioctl+0x8cc vndclear sys/dev/vnd.c:705 [inline] #6 vndioctl+0x8cc sys/dev/vnd.c:565 #7 VOP_IOCTL+0x97 sys/kern/vfs_vops.c:264 #8 vn_ioctl+0xc0 sys/kern/vfs_vnops.c:525 #9 sys_ioctl+0x4a2 #10 syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] #10 syscall+0x606 sys/arch/amd64/amd64/trap.c:623 #11 Xsyscall+0x128 exclusive rwlock dklk r = 0 (0xffff8000006b7068) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 vndioctl+0x3b7 sys/dev/vnd.c:544 #3 VOP_IOCTL+0x97 sys/kern/vfs_vops.c:264 #4 vn_ioctl+0xc0 sys/kern/vfs_vnops.c:525 #5 sys_ioctl+0x4a2 #6 syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] #6 syscall+0x606 sys/arch/amd64/amd64/trap.c:623 #7 Xsyscall+0x128 Process 7544 (syz-executor.6) thread 0xffff8000211f1560 (514774) exclusive rrwlock inode r = 0 (0xfffffd807da99f80) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vget+0x200 sys/kern/vfs_subr.c:676 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1314 #8 ufs_lookup+0x13ba sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x6e2 sys/kern/vfs_lookup.c:566 #11 namei+0x55a sys/kern/vfs_lookup.c:250 #12 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1847 #13 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #13 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806cc8e1a8) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0xd5 sys/kern/vfs_lookup.c:418 #6 namei+0x55a sys/kern/vfs_lookup.c:250 #7 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1847 #8 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #8 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10219 6507K 6878K 78643K 13570 0 pcb 13 14K 16K 78643K 547 0 rtable 241 7K 7K 78643K 1034 0 pf 34 9K 10K 78643K 359 0 ifaddr 46 17K 18K 78643K 227 0 ifgroup 59 2K 2K 78643K 565 0 sysctl 3 0K 0K 78643K 7 0 counters 62 36K 36K 78643K 326 0 ioctlops 0 0K 4K 78643K 2232 0 iov 0 0K 18K 78643K 894 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1481 93K 93K 78643K 4189 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 120 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 1385 0 dirhash 12 2K 2K 78643K 57 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 16 57K 85K 78643K 10408 0 sigio 0 0K 0K 78643K 639 0 proc 70 91K 127K 78643K 1329 0 subproc 104 6K 6K 78643K 293 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 338 0 in_multi 99 7K 7K 78643K 331 0 ether_multi 1 0K 0K 78643K 10 0 mrt 1 0K 0K 78643K 4 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 163 731K 731K 78643K 163 0 exec 0 0K 1K 78643K 1637 0 pfkey data 0 0K 0K 78643K 1 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 64K 78643K 10 0 UVM amap 542 509K 510K 78643K 103905 0 UVM aobj 131 6K 6K 78643K 137 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 320 0 NDP 13 0K 1K 78643K 187 0 temp 74 5924K 6180K 78643K 98857 0 kqueue 12 18K 28K 78643K 518 0 SYN cache 2 824K 832K 78643K 3 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 120 414 0 411 5 4 1 3 0 8 0 rtentry 112 275 0 163 4 0 4 4 0 8 0 unpcb 144 8486 0 8469 84 80 4 10 0 8 3 syncache 312 78 0 78 17 16 1 1 0 8 1 tcpqe 32 139 78 139 10 10 0 1 0 8 0 tcpcb 808 2245 0 2231 61 53 8 10 0 8 6 arp 120 45 0 27 1 0 1 1 0 8 0 inpcb 368 5982 0 5965 96 89 7 13 0 8 5 nd6 136 70 0 44 1 0 1 1 0 8 0 pkpcb 40 91 0 91 7 7 0 1 0 8 0 kcovpl 48 21 0 13 1 0 1 1 0 8 0 ppxss 1256 36 0 36 8 7 1 1 0 8 1 pffrag 232 153 0 150 1 0 1 1 0 482 0 pffrnode 88 153 0 150 1 0 1 1 0 8 0 pffrent 40 332 0 329 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 pfstitem 24 259 0 236 1 0 1 1 0 8 0 pfstkey 128 259 0 236 2 1 1 2 0 8 0 pfstate 376 259 0 236 9 6 3 5 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 1064 0 593 30 0 30 30 0 8 0 art_table 32 1065 0 593 4 0 4 4 0 8 0 art_node 16 261 0 159 1 0 1 1 0 8 0 sysvmsgpl 40 114 0 106 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 1380 0 1370 1 0 1 1 0 8 0 shmpl 112 134 0 6 4 0 4 4 0 8 0 dirhash 1024 47 0 30 3 0 3 3 0 8 0 dino2pl 256 16376 0 14889 94 0 94 94 0 8 0 ffsino 272 16376 0 14889 101 1 100 100 0 8 0 nchpl 144 33183 0 32702 63 40 23 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 108444 0 108444 5 4 1 2 0 8 1 percpumem 16 176 0 132 1 0 1 1 0 8 0 vcpupl 2048 111 0 0 14 0 14 14 0 8 0 vmpool 696 189 0 78 11 0 11 11 0 8 0 kstatmem 264 290 0 264 2 0 2 2 0 8 0 scxspl 216 90008 0 90008 27 25 2 8 1 8 2 plimitpl 152 954 0 938 1 0 1 1 0 8 0 sigapl 424 10751 0 10701 10 3 7 8 0 8 0 futexpl 64 84246 0 84242 1 0 1 1 0 8 0 knotepl 120 586 0 0 17 0 17 17 0 8 0 kqueuepl 216 1783 0 1775 23 22 1 5 0 8 0 pipepl 320 3174 0 3129 61 53 8 16 0 8 4 fdescpl 496 10691 0 10662 5 1 4 5 0 8 0 filepl 152 72663 0 72351 104 89 15 27 0 8 2 lockfpl 104 3217 0 3215 7 6 1 2 0 8 0 lockfspl 48 888 0 886 1 0 1 1 0 8 0 sessionpl 144 40 0 23 1 0 1 1 0 8 0 pgrppl 48 143 0 126 1 0 1 1 0 8 0 ucredpl 104 8247 0 8234 1 0 1 1 0 8 0 zombiepl 144 10703 0 10701 2 1 1 1 0 8 0 processpl 1072 10751 0 10701 5 0 5 5 0 8 0 procpl 680 28978 0 28903 14 5 9 9 0 8 0 sosppl 168 96 0 94 7 6 1 1 0 8 0 sockpl 488 14980 0 14943 337 324 13 36 0 8 8 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 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 15 0 0 2 0 2 2 0 8 0 mcl8k 8192 18 0 0 3 0 3 3 0 8 0 mcl4k 4096 33 0 0 3 0 3 3 0 8 0 mcl2k2 2112 17 0 0 2 0 2 2 0 8 0 mcl2k 2048 314 0 0 32 4 28 32 0 8 0 mtagpl 96 28 0 0 1 0 1 1 0 8 0 mbufpl 256 1137 0 0 59 0 59 59 0 8 0 bufpl 288 21090 0 14768 452 0 452 452 0 8 0 anonpl 24 1058604 0 1043786 171 58 113 120 0 186 10 amapchunkpl 152 327233 0 326242 90 50 40 49 0 158 1 amappl16 200 21379 0 20870 116 82 34 41 0 8 5 amappl15 192 12 0 11 1 0 1 1 0 8 0 amappl14 184 199 0 186 2 1 1 2 0 8 0 amappl13 176 18 0 17 1 0 1 1 0 8 0 amappl12 168 11564 0 11528 3 1 2 2 0 8 0 amappl11 160 64 0 49 1 0 1 1 0 8 0 amappl10 152 61 0 47 1 0 1 1 0 8 0 amappl9 144 277 0 275 1 0 1 1 0 8 0 amappl8 136 644 0 500 6 0 6 6 0 8 1 amappl7 128 253 0 225 2 0 2 2 0 8 0 amappl6 120 593 0 575 1 0 1 1 0 8 0 amappl5 112 302 0 291 1 0 1 1 0 8 0 amappl4 104 710 0 681 2 1 1 2 0 8 0 amappl3 96 64289 0 64186 4 1 3 3 0 8 0 amappl2 88 11626 0 11546 3 1 2 3 0 8 0 amappl1 80 46425 0 45860 24 11 13 23 0 8 0 amappl 88 102876 0 102562 10 2 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 72 136 0 6 3 0 3 3 0 8 0 uaddrrnd 24 10880 0 10739 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 10880 0 10739 1 0 1 1 0 8 0 vmmpekpl 168 83778 0 83706 5 1 4 4 0 8 0 vmmpepl 168 644302 0 641546 313 172 141 142 0 357 17 vmsppl 464 10879 0 10739 19 1 18 18 0 8 0 rwobjpl 56 159998 0 152176 120 6 114 114 0 8 0 pdppl 4096 21768 0 21589 450 269 181 181 0 8 2 pvpl 32 2856198 0 2835363 434 229 205 337 0 265 22 pmappl 248 10879 0 10739 10 1 9 9 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1452 0 450 29 0 29 29 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace memset() at memset+0x52 ffs_write(ffff80002e41d4b0) at ffs_write+0x924 VOP_WRITE(fffffd806839bb10,ffff80002e41d548,23,fffffd807f7d7548) at VOP_WRITE+0xc3 sys/kern/vfs_vops.c:245 vn_rdwr(1,fffffd806839bb10,ffff80002e41d638,40,0,1,ef939320edbc486d,0,ffff8000212afd40,fffffd806839bb10) at vn_rdwr+0xed sys/kern/vfs_vnops.c:324 acct_process(ffff8000212afd40) at acct_process+0x62c sys/kern/kern_acct.c:243 exit1(ffff8000212afd40,0,0,1) at exit1+0x3b1 sys/kern/kern_exit.c:212 sys_exit(ffff8000212afd40,ffff80002e41d7c0,ffff80002e41d810) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002e41d890) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e41d890) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6fa9e6690200, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffff800020d48ff0) 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 __mp_lock(ffffffff82d4ab30) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d4ab30) at __mp_lock+0x122 sys/kern/kern_lock.c:147 reaper(ffff8000211a3548) at reaper+0x160 sys/kern/kern_exit.c:446 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800020d48ff0) 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 __mp_lock(ffffffff82d4ab30) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d4ab30) at __mp_lock+0x122 sys/kern/kern_lock.c:147 reaper(ffff8000211a3548) at reaper+0x160 sys/kern/kern_exit.c:446 end trace frame: 0x0, count: -5