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OGYX,h-Qݕ0g]2`Zb5k}yHrayw((Aq?[*{G^icl:"Āa󭕜6OC^"ij[N').x(v xz]Wtfa}NuLlvW6v_߁5SլdDCl,|Kذ|rtao4Ul۰3I:v[BNFzߨg2Ս`T*iƓNC#-{u%]Rzn5E'_ & R,JOs2-?4;8ĕԜ[T7i>FJ$'r-QXktWh|ItiCGlf6l1i@.gS/!m_B+{|V6#rzΏcuvm_fault(0xfffffd806b9c13e8, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff81eae448 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80003c533110 gsbase 0xffff8000299edff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff81eae448 Starting stack trace... panic(ffffffff833a0b15) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80003c533060) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff800001577000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(21e5f,81,2000,ffff800031008550) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,81,2000,ffff800031008550) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c533210) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80620cde58,81,fffffd80097fb5b0,ffff800031008550) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8065765630,ffff800031008550) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8065765630,ffff800031008550) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8065765630,ffff800031008550) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd8065765630,ffff800031008550) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff800031008550) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff800031008550,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff800031008550,ffff80003c533580,ffff80003c5334d0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c533580) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c533580) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7da180537410, count: 242 End of stack trace. WARNING: SPL NOT LOWERED ON TRAP EXIT 4 0 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x688 TID PID UID PRFLAGS PFLAGS CPU COMMAND *421335 84320 0 0 0 1 syz-executor 460021 28063 0 0x1000 0x4080000 0 syz-executor proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7f531c6aef50, count: 14 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}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xfffffd806b9c13e8, 0x0, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7f531c6aef50, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c465560 rbx 0 rdx 0 rcx 0xffff80002a3befe0 rax 0x2a r8 0xffff80003c465490 r9 0x1 r10 0xa0de23d759fa174d r11 0x1a78379075db502e r12 0 r13 0 r14 0 r15 0 rip 0xffffffff813504c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80003c4654e0 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=421335 pid=84320 tcnt=1 stat=onproc flags process=0 proc=0 runpri=50, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a3bf278,0xffffffff8394e280 process=0xffff80003c524038 user=0xffff80003c460000, vmspace=0xfffffd806b9c15d0 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *84320 421335 88401 0 7 0 syz-executor 82349 240931 62737 0 2 0 syz-executor 55304 424395 85014 0 2 0 syz-executor 77248 318431 55258 0 2 0 syz-executor 77248 120379 55258 0 3 0x4000080 fsleep syz-executor 28063 324600 85986 0 3 0x3000 suspend syz-executor 28063 460021 85986 0 7 0x4081000 syz-executor 28063 78040 85986 0 3 0x4081000 inode syz-executor 73915 15012 48214 0 2 0 syz-executor 73915 18664 48214 0 3 0x4000080 fsleep syz-executor 73915 275636 48214 0 3 0x4000080 fsleep syz-executor 83569 183834 55931 0 3 0x80 nanoslp syz-executor 83569 87992 55931 0 3 0x4000080 kqpoll syz-executor 83569 423602 55931 0 3 0x4000080 fsleep syz-executor 48214 456098 30808 0 3 0x82 nanoslp syz-executor 42551 387825 63219 0 3 0x82 sbwait sshd-session 24179 401862 1 0 3 0x100083 ttyin getty 81479 487947 30808 0 3 0x82 nanoslp syz-executor 55931 496780 30808 0 3 0x82 nanoslp syz-executor 62737 131145 30808 0 3 0x82 nanoslp syz-executor 94665 275945 0 0 3 0x14280 nfsidl nfsio 40633 335718 0 0 3 0x14280 nfsidl nfsio 2547 388402 0 0 3 0x14280 nfsidl nfsio 86076 185559 0 0 3 0x14280 nfsidl nfsio 63357 421413 0 0 3 0x14280 nfsidl nfsio 87793 151631 0 0 3 0x14280 nfsidl nfsio 68111 324875 0 0 3 0x14280 nfsidl nfsio 74617 453136 0 0 3 0x14280 nfsidl nfsio 53859 397648 0 0 3 0x14280 nfsidl nfsio 71673 337804 0 0 3 0x14280 nfsidl nfsio 60985 469247 0 0 3 0x14280 nfsidl nfsio 6617 41850 0 0 3 0x14280 nfsidl nfsio 49776 28418 0 0 3 0x14280 nfsidl nfsio 88659 27786 0 0 3 0x14280 nfsidl nfsio 15943 148457 0 0 3 0x14280 nfsidl nfsio 23826 350446 0 0 3 0x14280 nfsidl nfsio 74756 343531 0 0 3 0x14280 nfsidl nfsio 75255 180385 0 0 3 0x14280 nfsidl nfsio 49310 160845 0 0 3 0x14280 nfsidl nfsio 63306 276971 0 0 3 0x14280 nfsidl nfsio 55258 77133 30808 0 3 0x82 nanoslp syz-executor 46508 209566 0 0 3 0x14200 bored sosplice 88401 80965 30808 0 3 0x82 nanoslp syz-executor 85986 189543 30808 0 3 0x82 nanoslp syz-executor 85014 78894 30808 0 3 0x82 nanoslp syz-executor 30808 514917 5697 0 3 0x82 kqread syz-executor 5697 278523 38928 0 3 0x10008a sigsusp ksh 38928 37385 56907 0 3 0x98 kqread sshd-session 56907 125652 63219 0 3 0x92 kqread sshd-session 63219 323283 1 0 3 0x88 kqread sshd 55677 452800 19599 74 3 0x1100092 bpf pflogd 19599 507520 1 0 3 0x80 sbwait pflogd 49350 102244 33226 73 3 0x1100090 kqread syslogd 33226 198470 1 0 3 0x100082 sbwait syslogd 73153 300085 1 0 3 0x100080 kqread resolvd 32323 501971 95147 77 3 0x100092 kqread dhcpleased 98620 283336 95147 77 3 0x100092 kqread dhcpleased 95147 84386 1 0 3 0x80 kqread dhcpleased 46142 510034 0 0 3 0x14200 bored smr 91408 101912 0 0 3 0x14200 pgzero zerothread 53813 48186 0 0 3 0x14200 aiodoned aiodoned 9294 179143 0 0 3 0x14200 syncer update 21671 26034 0 0 3 0x14200 cleaner cleaner 40420 420111 0 0 3 0x14200 reaper reaper 70287 320267 0 0 3 0x14200 pgdaemon pagedaemon 73374 470215 0 0 3 0x14200 bored viomb 854 215611 0 0 3 0x40014200 acpi0 acpi0 46953 409141 0 0 3 0x40014200 idle1 29887 7827 0 0 3 0x14200 bored softnet7 5787 436295 0 0 3 0x14200 bored softnet6 42334 277955 0 0 3 0x14200 bored softnet5 11468 403259 0 0 3 0x14200 bored softnet4 96605 192764 0 0 3 0x14200 bored softnet3 36192 113233 0 0 3 0x14200 bored softnet2 10066 141607 0 0 3 0x14200 bored softnet1 2984 360247 0 0 3 0x14200 netlock softnet0 35342 483098 0 0 2 0x40014200 systqmp 34935 304120 0 0 3 0x14200 bored systq 95556 435620 0 0 3 0x14200 tmoslp softclockmp 93710 239213 0 0 3 0x40014200 tmoslp softclock 73970 169625 0 0 3 0x40014200 idle0 1 238850 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 28063 (syz-executor) thread 0xffff80002ec007f8 (460021) exclusive rrwlock inode r = 0 (0xfffffd806e0787e8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vn_write+0x18f sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x242 sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10265 11100K 11705K 166960K 13096 0 pcb 17 18K 20K 166960K 720 0 rtable 244 15K 15K 166960K 819 0 pf 44 19K 131091K 166960K 375 0 ifaddr 43 8K 8K 166960K 206 0 ifgroup 63 2K 3K 166960K 380 0 sysctl 4 1K 9K 166960K 31 0 counters 72 37K 38K 166960K 420 0 ioctlops 0 0K 6K 166960K 2116 0 iov 0 0K 28K 166960K 136 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1454 91K 92K 166960K 3437 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 37 0 VM map 2 1K 1K 166960K 2 0 sem 24 21K 21K 166960K 66 0 dirhash 12 2K 2K 166960K 54 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 240K 166960K 2608 0 sigio 0 0K 0K 166960K 46 0 proc 73 115K 164K 166960K 951 0 subproc 72 4K 4K 166960K 127 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 534 0 in_multi 95 7K 7K 166960K 266 0 ether_multi 1 0K 0K 166960K 29 0 mrt 4 0K 0K 166960K 25 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 241 1076K 1076K 166960K 241 0 exec 0 0K 1K 166960K 1020 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 8 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 240 177K 200K 166960K 25830 0 UVM aobj 8 2K 2K 166960K 8 0 pinsyscall 45 90K 103K 166960K 3907 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 180 0 NDP 14 0K 2K 166960K 154 0 temp 82 8652K 8724K 166960K 96198 0 kqueue 13 20K 34K 166960K 583 0 SYN cache 2 8K 16K 166960K 3 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 26 0 0 1 0 1 1 0 8 0 rtpcb 120 288 0 285 3 2 1 3 0 8 0 rtentry 176 300 0 210 5 0 5 5 0 8 0 unpcb 144 1978 0 1959 19 13 6 6 0 8 5 syncache 336 26 0 26 7 6 1 1 0 8 1 tcpqe 32 16 0 16 5 4 1 1 0 8 1 tcpcb 736 1017 0 996 21 14 7 8 0 8 4 arp 136 55 0 41 1 0 1 1 0 8 0 inpcb 328 3497 0 3473 46 35 11 17 0 8 8 nd6 144 36 0 13 1 0 1 1 0 8 0 pkpcb 40 37 0 37 5 4 1 1 0 8 1 kcovpl 48 14 0 6 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 139 0 139 2 1 1 1 0 8 1 pppxif 1504 14 0 14 4 3 1 1 0 8 1 pfstscr 40 9 0 6 1 0 1 1 0 8 0 pffrag 232 16 0 8 1 0 1 1 0 482 0 pffrnode 88 13 0 7 1 0 1 1 0 8 0 pffrent 40 31 0 21 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 pfanchor 1288 6 0 0 1 0 1 1 0 8 0 pftag 88 5 0 0 1 0 1 1 0 8 0 pfstitem 24 220 0 87 1 0 1 1 0 8 0 pfstkey 128 234 0 101 5 0 5 5 0 8 0 pfstate 384 226 0 96 13 0 13 13 0 8 0 pfrule 1344 37 0 31 2 1 1 2 0 8 0 rttmr 136 7 0 7 5 4 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 1178 0 730 39 11 28 30 0 8 0 art_table 40 1181 0 730 5 0 5 5 0 8 0 art_node 32 295 0 220 2 0 2 2 0 8 0 sysvmsgpl 40 22 0 14 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 56 0 34 1 0 1 1 0 8 0 shmpl 112 5 0 0 1 0 1 1 0 8 0 dirhash 1024 46 0 29 3 0 3 3 0 8 0 dino2pl 256 6444 0 4932 96 0 96 96 0 8 0 ffsino 296 6444 0 4932 118 0 118 118 0 8 0 nchpl 144 9962 0 8253 64 0 64 64 0 8 0 rtmask 32 28 0 28 5 4 1 1 0 8 1 uvmvnodes 80 5927 0 0 121 0 121 121 0 8 0 vnodes 216 5927 0 0 330 0 330 330 0 8 0 namei 1024 35879 0 35879 6 5 1 2 0 8 1 percpumem 16 225 0 174 1 0 1 1 0 8 0 kstatmem 264 256 0 222 4 1 3 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 11 0 11 3 2 1 1 0 8 1 scxspl 216 47426 0 47426 17 15 2 8 1 8 2 plimitpl 152 698 0 680 1 0 1 1 0 8 0 sigapl 424 2933 0 2857 11 2 9 9 0 8 0 knotepl 120 648 0 0 19 0 19 19 0 8 0 kqueuepl 224 1104 0 1094 10 8 2 5 0 8 1 pipepl 344 500 0 472 13 7 6 9 0 8 3 fdescpl 528 2858 0 2825 3 0 3 3 0 8 0 filepl 160 20720 0 20498 51 30 21 23 0 8 8 lockfpl 104 988 0 986 1 0 1 1 0 8 0 lockfspl 48 406 0 404 1 0 1 1 0 8 0 sessionpl 144 49 0 39 1 0 1 1 0 8 0 pgrppl 48 98 0 80 1 0 1 1 0 8 0 ucredpl 104 3814 0 3800 1 0 1 1 0 8 0 zombiepl 144 3640 0 3638 2 1 1 1 0 8 0 processpl 1232 2933 0 2857 8 1 7 7 0 8 0 procpl 664 7215 0 7132 11 2 9 9 0 8 0 sosppl 168 22 0 22 6 5 1 1 0 8 1 sockpl 752 5872 0 5826 65 49 16 29 0 8 8 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 8 0 0 1 0 1 1 0 8 0 mcl4k 4096 128 0 0 16 0 16 16 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 50 0 0 5 0 5 5 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 442 0 0 28 0 28 28 0 8 0 bufpl 280 17477 0 11334 440 0 440 440 0 8 0 anonpl 32 11672 0 0 95 0 95 95 0 246 0 amapchunkpl 152 87092 0 86632 53 21 32 33 0 158 5 amappl16 200 8424 0 8347 86 68 18 28 0 8 8 amappl15 192 31 0 31 2 2 0 1 0 8 0 amappl14 184 192 0 179 1 0 1 1 0 8 0 amappl13 176 5 0 4 1 0 1 1 0 8 0 amappl12 168 3635 0 3604 4 2 2 3 0 8 0 amappl11 160 93 0 79 1 0 1 1 0 8 0 amappl10 152 8 0 8 1 1 0 1 0 8 0 amappl9 144 287 0 287 1 1 0 1 0 8 0 amappl8 136 22 0 19 1 0 1 1 0 8 0 amappl7 128 136 0 123 1 0 1 1 0 8 0 amappl6 120 259 0 254 1 0 1 1 0 8 0 amappl5 112 162 0 152 1 0 1 1 0 8 0 amappl4 104 386 0 365 1 0 1 1 0 8 0 amappl3 96 15513 0 15423 4 0 4 4 0 8 0 amappl2 88 3308 0 3221 3 0 3 3 0 8 0 amappl1 80 23210 0 22525 16 0 16 16 0 8 0 amappl 88 24546 0 24386 5 0 5 5 0 92 0 dma32768 32768 2 0 2 1 0 1 1 0 8 1 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 12 0 12 3 3 0 1 0 8 0 dma128 128 258 0 258 4 3 1 1 0 8 1 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 7 0 0 1 0 1 1 0 8 0 uaddrrnd 24 2858 0 2825 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2858 0 2825 1 0 1 1 0 8 0 vmmpekpl 168 25677 0 25613 4 0 4 4 0 8 0 vmmpepl 168 187133 0 184921 149 34 115 115 0 357 9 vmsppl 488 2857 0 2825 5 0 5 5 0 8 0 rwobjpl 80 55751 0 48748 154 2 152 152 0 8 4 pdppl 4096 5724 0 5650 129 53 76 86 0 8 2 pvpl 32 20768 0 0 167 0 167 167 0 265 0 pmappl 256 2857 0 2825 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 366 0 94 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff837baff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 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(ffffffff839c7a60) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839c7a60) at __mp_lock+0x192 sys/kern/kern_lock.c:165 softintr_dispatch(2) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsofttty() at Xsofttty+0x27 __mp_lock(ffffffff839c7a60) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839c7a60) at __mp_lock+0x192 sys/kern/kern_lock.c:165 __mp_acquire_count(ffffffff839c7a60,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2d8 sys/kern/kern_synch.c:367 biowait(fffffd800cdc3b30) at biowait+0xc6 sys/kern/vfs_bio.c:1242 bwrite(fffffd800cdc3b30) at bwrite+0x2e7 sys/kern/vfs_bio.c:754 ffs_write(ffff80003c52d5d0) at ffs_write+0x810 sys/ufs/ffs/ffs_vnops.c:377 VOP_WRITE(fffffd807264b880,ffff80003c52d788,7,fffffd80097fb5b0) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 end trace frame: 0xffff80003c52d6c0, count: 0 ddb{0}> trace x86_ipi_db(ffffffff837baff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 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(ffffffff839c7a60) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839c7a60) at __mp_lock+0x192 sys/kern/kern_lock.c:165 softintr_dispatch(2) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsofttty() at Xsofttty+0x27 __mp_lock(ffffffff839c7a60) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839c7a60) at __mp_lock+0x192 sys/kern/kern_lock.c:165 __mp_acquire_count(ffffffff839c7a60,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2d8 sys/kern/kern_synch.c:367 biowait(fffffd800cdc3b30) at biowait+0xc6 sys/kern/vfs_bio.c:1242 bwrite(fffffd800cdc3b30) at bwrite+0x2e7 sys/kern/vfs_bio.c:754 ffs_write(ffff80003c52d5d0) at ffs_write+0x810 sys/ufs/ffs/ffs_vnops.c:377 VOP_WRITE(fffffd807264b880,ffff80003c52d788,7,fffffd80097fb5b0) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 vn_write(fffffd806aef99a0,ffff80003c52d788,0) at vn_write+0x1d3 sys/kern/vfs_vnops.c:408 dofilewritev(ffff80002ec007f8,4,ffff80003c52d788,0,ffff80003c52d840) at dofilewritev+0x242 sys/kern/sys_generic.c:380 sys_write(ffff80002ec007f8,ffff80003c52d8f0,ffff80003c52d840) at sys_write+0xa2 sys/kern/sys_generic.c:300 syscall(ffff80003c52d8f0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c52d8f0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x811d3830850, count: -19 ddb{0}> machine ddbcpu 1 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x688 proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7f531c6aef50, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7f531c6aef50, count: -1