uvm_fault(0xfffffd800b0635b8, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff8290ab18 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80002a389740 gsbase 0xffffffff838a3ff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff8290ab18 Starting stack trace... panic(ffffffff833e667f) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80002a389690) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_i octl_record_stop(ffff800001728000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(21e5f,81,2000,ffff80003c452ac0) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,81,2000,ffff80003c452ac0) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80002a389840) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd807b0accc0,81,fffffd80097fd7b8,ffff80003c452ac0) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806df8dc20,ffff80003c452ac0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806df8dc20,ffff80003c452ac0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806df8dc20,ffff80003c452ac0) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806df8dc20,ffff80003c452ac0) at closef+0x192 sys/kern/kern_descrip.c:1264 syscall(ffff80002a389aa0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a389aa0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3b076fd3d0, count: 245 End of stack trace. W ARNINduGm:p SPtoL d NeOvT 4L,OW1 EnRoEtD OpNo sSsYibSlCeA LL 91 -888849544 EXIT 0 a Stopped at savectx+0xae: movl $0,%gs:0x688 TID PID UID PRFLAGS PFLAGS CPU COMMAND 441913 61398 0 0 0x4000000 0 syz-executor *212267 92659 0 0 0 1 syz-executor savectx() at savectx+0xae end of kernel end trace frame: 0x75f5cb053b60, 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 *cpu0: uvm_fault(0xfffffd800b0635b8, 0x0, 0, 1) -> e ddb{1}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x75f5cb053b60, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002ebc2d20 rbx 0 rdx 0 rcx 0xffff80003c452590 rax 0x3b r8 0xffff80002ebc2c50 r9 0x1 r10 0x4f168953d510153a r11 0xb364894088d84059 r12 0 r13 0 r14 0xffff80003c452590 r15 0 rip 0xffffffff8133a3ee savectx+0xae cs 0x8 rflags 0x46 rsp 0xffff80002ebc2ca0 ss 0x10 savectx+0xae: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=212267 pid=92659 tcnt=2 stat=onproc flags process=0 proc=0 runpri=32, usrpri=84, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800039c6f7a0,0xffff80003c452d68 process=0xffff8000ffff4e78 user=0xffff80002ebbd000, vmspace=0xfffffd806c93e3f0 estcpu=34, cpticks=6, pctcpu=0.5, user=5, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 4577 478137 65584 0 2 0 syz-executor 4577 473292 65584 0 2 0x4000000 syz-executor 35478 57584 98721 0 2 0 syz-executor 35478 49736 98721 0 3 0x4000080 fsleep syz-executor 7852 351094 33539 0 3 0x3000 suspend syz-executor 7852 413380 33539 0 2 0x4081000 syz-executor 7852 443324 33539 0 2 0x4081000 syz-executor 7852 79 33539 0 2 0x4081000 syz-executor 61398 355396 83081 0 2 0 syz-executor 61398 441913 83081 0 7 0x4000000 syz-executor 61398 219972 83081 0 3 0x4000080 fsleep syz-executor 66922 3850 37115 0 2 0 syz-executor 66922 392894 37115 0 3 0x4000080 ttyin syz-executor 66922 449978 37115 0 3 0x4000080 fsleep syz-executor *92659 212267 61370 0 7 0 syz-executor 92659 47871 61370 0 3 0x4000080 sbwait syz-executor 33539 163702 66634 0 2 0xc82 syz-executor 61370 119746 66634 0 2 0xc82 syz-executor 98721 432504 66634 0 2 0xc82 syz-executor 37115 398268 66634 0 2 0xc82 syz-executor 3141 3891 0 0 3 0x14200 acct acct 16576 295398 1 0 3 0x100083 ttyopn getty 10948 309309 66634 0 2 0xc82 syz-executor 65584 296479 66634 0 2 0xc82 syz-executor 41692 465037 66634 0 2 0xc82 syz-executor 83081 470417 66634 0 2 0xc82 syz-executor 66634 486891 7605 0 3 0x82 kqread syz-executor 7605 63625 61920 0 3 0x10008a sigsusp ksh 61920 338286 70743 0 3 0x98 kqread sshd-session 70743 322324 98963 0 3 0x92 kqread sshd-session 98963 256654 1 0 3 0x88 kqread sshd 65154 271465 81001 74 3 0x1100092 bpf pflogd 81001 474652 1 0 3 0x80 sbwait pflogd 84715 245027 71044 73 3 0x1100090 kqread syslogd 71044 514039 1 0 3 0x100082 sbwait syslogd 23577 80245 1 0 3 0x100080 kqread resolvd 88284 84877 10010 77 3 0x100092 kqread dhcpleased 31603 65489 10010 77 3 0x100092 kqread dhcpleased 10010 366029 1 0 3 0x80 kqread dhcpleased 480 350299 0 0 3 0x14200 bored smr 54778 85540 0 0 2 0x14200 zerothread 11776 199268 0 0 3 0x14200 aiodoned aiodoned 51660 63014 0 0 3 0x14200 syncer update 34303 423361 0 0 3 0x14200 cleaner cleaner 74264 423522 0 0 2 0x14200 reaper 15848 140708 0 0 3 0x14200 pgdaemon pagedaemon 42591 239976 0 0 3 0x14200 bored viomb 60651 391858 0 0 3 0x40014200 acpi0 acpi0 13309 382038 0 0 3 0x40014200 idle1 89825 297063 0 0 3 0x14200 bored softnet1 53299 461621 0 0 2 0x14200 softnet0 84764 446476 0 0 3 0x14200 bored systqmp 91380 173474 0 0 3 0x14200 bored systq 44355 185525 0 0 2 0x14200 softclockmp 51908 10176 0 0 3 0x40014200 tmoslp softclock 13280 161036 0 0 3 0x40014200 idle0 1 321950 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex &uvm.pageqlock r = 0 (0xffffffff838fecc8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter+0x4b4 sys/kern/kern_lock.c:487 #2 uvm_pageclean+0x29c sys/uvm/uvm_page.c:980 #3 uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 #4 uvm_anfree+0xe9 sys/uvm/uvm_anon.c:112 #5 amap_wipeout+0x246 sys/uvm/uvm_amap.c:-1 #6 uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353 #7 uvm_map_teardown+0x360 sys/uvm/uvm_map.c:2530 #8 exit1+0x6fc sys/kern/kern_exit.c:260 #9 sys_exit+0x1a sys/kern/kern_exit.c:-1 #10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 #11 Xsyscall+0x128 Process 61398 (syz-executor) thread 0xffff80003c452ac0 (441913) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11120 12181K 14089K 166960K 18248 0 pcb 21 16K 31K 166960K 1770 0 rtable 267 15K 16K 166960K 1602 0 pf 43 19K 83K 166960K 547 0 ifaddr 46 9K 10K 166960K 391 0 ifgroup 61 2K 3K 166960K 690 0 sysctl 4 1K 9K 166960K 73 0 counters 74 37K 38K 166960K 1098 0 ioctlops 0 0K 8K 166960K 3585 0 iov 0 0K 16K 166960K 449 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1515 95K 96K 166960K 6418 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 2K 10K 166960K 73 0 VM map 2 1K 1K 166960K 2 0 sem 15 1K 1K 166960K 445 0 dirhash 12 2K 2K 166960K 138 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 240K 166960K 6119 0 sigio 0 0K 0K 166960K 291 0 proc 73 115K 180K 166960K 1674 0 subproc 72 4K 4K 166960K 268 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 1121 0 in_multi 95 7K 7K 166960K 596 0 ether_multi 1 0K 0K 166960K 75 0 mrt 1 0K 0K 166960K 47 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 265 1182K 1182K 166960K 265 0 exec 0 0K 1K 166960K 1684 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 13 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 263 170K 188K 166960K 57245 0 UVM aobj 79 40K 40K 166960K 103 0 pinsyscall 42 84K 102K 166960K 7764 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 635 0 NDP 17 0K 2K 166960K 295 0 temp 84 8688K 8944K 166960K 285533 0 kqueue 16 24K 32K 166960K 1253 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 548 0 545 3 2 1 3 0 8 0 rtentry 176 489 0 388 7 2 5 6 0 8 0 unpcb 144 4780 0 4756 39 35 4 6 0 8 3 syncache 336 9 0 9 4 4 0 1 0 8 0 tcpqe 32 4 0 4 2 2 0 1 0 8 0 tcpcb 736 2037 0 2031 37 35 2 7 0 8 1 arp 136 80 0 61 1 0 1 1 0 8 0 inpcb 328 7511 0 7497 64 60 4 12 0 8 2 nd6 152 99 0 74 1 0 1 1 0 8 0 pkpcb 40 50 0 50 12 11 1 1 0 8 1 kcovpl 48 29 0 21 1 0 1 1 0 8 0 mppekey 1024 2 0 2 2 2 0 1 0 8 0 ppxss 1192 432 0 431 4 3 1 1 0 8 0 pppxif 1504 31 0 31 9 9 0 1 0 8 0 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 37 0 24 1 0 1 1 0 482 0 pffrnode 88 34 0 21 1 0 1 1 0 8 0 pffrent 40 67 0 54 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 9 0 7 1 0 1 1 0 8 0 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 1 0 0 1 0 1 1 0 8 0 pfstkey 128 5 0 4 1 0 1 1 0 8 0 pfstate 448 3 0 2 1 0 1 1 0 8 0 pfrule 1360 3 0 1 2 1 1 1 0 8 0 rttmr 136 6 0 6 4 4 0 1 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 2379 0 1962 54 25 29 30 0 8 1 art_table 40 2383 0 1962 6 1 5 5 0 8 0 art_node 32 486 0 399 1 0 1 1 0 8 0 sysvmsgpl 40 24 0 16 3 2 1 1 0 8 0 semupl 112 4 0 4 4 4 0 1 0 8 0 semapl 112 432 0 419 1 0 1 1 0 8 0 shmpl 112 72 0 13 2 0 2 2 0 8 0 dirhash 1024 101 0 84 3 0 3 3 0 8 0 dino2pl 256 13096 0 11535 98 0 98 98 0 8 0 ffsino 296 13096 0 11535 122 1 121 121 0 8 0 nchpl 144 21340 0 19574 66 0 66 66 0 8 0 rtmask 32 73 0 73 10 9 1 1 0 8 1 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 80730 0 80730 8 7 1 2 0 8 1 percpumem 16 564 0 512 1 0 1 1 0 8 0 vcpupl 3968 20 0 3 3 0 3 3 0 8 0 vmpool 848 26 0 9 2 0 2 2 0 8 0 pfiaddrpl 120 1 0 0 1 0 1 1 0 8 0 kstatmem 264 456 0 424 6 3 3 3 0 8 0 acpiwqpl 32 3 0 3 1 0 1 1 1 8 1 scsiplug 72 23 0 23 13 12 1 1 0 8 1 scxspl 216 193301 0 193301 22 20 2 8 1 8 2 plimitpl 152 1518 0 1499 1 0 1 1 0 8 0 sigapl 424 6430 0 6381 12 4 8 8 0 8 0 knotepl 120 900 0 0 23 0 23 23 0 8 0 kqueuepl 224 2790 0 2777 29 24 5 5 0 8 4 pipepl 344 1127 0 1100 26 23 3 11 0 8 0 fdescpl 528 6323 0 6292 3 0 3 3 0 8 0 filepl 160 48437 0 48204 66 51 15 20 0 8 1 lockfpl 104 2563 0 2557 3 2 1 2 0 8 0 lockfspl 48 810 0 807 1 0 1 1 0 8 0 sessionpl 144 48 0 39 1 0 1 1 0 8 0 pgrppl 48 174 0 157 1 0 1 1 0 8 0 ucredpl 104 7499 0 7486 1 0 1 1 0 8 0 zombiepl 144 8149 0 8146 2 1 1 1 0 8 0 processpl 1232 6430 0 6381 10 5 5 6 0 8 0 procpl 664 16672 0 16613 13 6 7 8 0 8 0 sosppl 176 48 0 48 9 8 1 1 0 8 1 sockpl 752 13320 0 13279 123 112 11 23 0 8 6 mcl64k 65536 16 0 0 2 0 2 2 0 8 0 mcl16k 16384 3 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 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 135 0 0 16 1 15 16 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 53 0 0 5 0 5 5 0 8 0 mtagpl 96 7 0 0 1 0 1 1 0 8 0 mbufpl 256 1324 0 0 72 0 72 72 0 8 0 bufpl 280 81319 0 75183 439 0 439 439 0 8 0 anonpl 32 15527 0 0 126 1 125 125 0 246 0 amapchunkpl 152 197671 0 197114 87 57 30 42 0 158 5 amappl16 200 26687 0 26650 160 136 24 38 0 8 9 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 50 0 50 1 1 0 1 0 8 0 amappl13 176 678 0 677 1 0 1 1 0 8 0 amappl12 168 6559 0 6525 3 0 3 3 0 8 0 amappl11 160 52 0 51 2 1 1 1 0 8 0 amappl10 152 104 0 90 1 0 1 1 0 8 0 amappl9 144 254 0 254 1 1 0 1 0 8 0 amappl8 136 27 0 23 1 0 1 1 0 8 0 amappl7 128 163 0 161 1 0 1 1 0 8 0 amappl6 120 559 0 545 1 0 1 1 0 8 0 amappl5 112 79 0 68 1 0 1 1 0 8 0 amappl4 104 583 0 553 1 0 1 1 0 8 0 amappl3 96 35906 0 35805 5 2 3 4 0 8 0 amappl2 88 6407 0 6325 2 0 2 2 0 8 0 amappl1 80 35959 0 35372 14 0 14 14 0 8 0 amappl 88 55164 0 54981 5 0 5 5 0 92 0 uvmvnodes 80 269 0 0 6 0 6 6 0 8 0 dma65536 65536 2 0 2 2 1 1 1 0 8 1 dma16384 16384 1 0 1 1 1 0 1 0 8 0 dma8192 8192 4 0 4 3 3 0 1 0 8 0 dma4096 4096 2 0 2 2 2 0 1 0 8 0 dma2048 2048 4 0 4 4 4 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma512 512 1 0 1 1 1 0 1 0 8 0 dma256 256 42 0 42 4 4 0 1 0 8 0 dma128 128 264 0 264 9 9 0 1 0 8 0 dma64 64 8 0 8 2 2 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 72 102 0 24 2 0 2 2 0 8 0 uaddrrnd 24 6323 0 6292 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 6323 0 6292 1 0 1 1 0 8 0 vmmpekpl 168 44567 0 44498 4 0 4 4 0 8 0 vmmpepl 168 403964 0 401979 167 58 109 118 0 357 4 vmsppl 488 6322 0 6291 6 1 5 5 0 8 0 rwobjpl 80 105271 0 103965 43 6 37 39 0 8 0 pdppl 4096 12706 0 12617 180 89 91 91 0 8 2 pvpl 32 24392 0 0 196 0 196 196 0 265 0 pmappl 256 6348 0 6300 4 0 4 4 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 512 0 180 10 0 10 10 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff838a3ff0) 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(ffffffff83906d80) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83906d80) at __mp_lock+0x199 sys/kern/kern_lock.c:173 scsi_xs_get(ffff8000002a4100,103) at scsi_xs_get+0x15f scsi_iopool_get sys/scsi/scsi_base.c:260 [inline] scsi_xs_get(ffff8000002a4100,103) at scsi_xs_get+0x15f sys/scsi/scsi_base.c:655 sdactivate(ffff8000002a2c00,6) at sdactivate+0x268 sd_flush sys/scsi/sd.c:-1 [inline] sdactivate(ffff8000002a2c00,6) at sdactivate+0x268 sys/scsi/sd.c:271 config_suspend(ffff8000002a2c00,6) at config_suspend+0x62 sys/kern/subr_autoconf.c:834 scsibusactivate(ffff8000002a3500,6) at scsibusactivate+0xab scsi_activate_link sys/scsi/scsiconf.c:410 [inline] scsibusactivate(ffff8000002a3500,6) at scsibusactivate+0xab scsi_activate_bus sys/scsi/scsiconf.c:360 [inline] scsibusactivate(ffff8000002a3500,6) at scsibusactivate+0xab sys/scsi/scsiconf.c:259 config_activate_children(ffff8000000a4000,6) at config_activate_children+0x1a1 config_suspend sys/kern/subr_autoconf.c:834 [inline] config_activate_children(ffff8000000a4000,6) at config_activate_children+0x1a1 sys/kern/subr_autoconf.c:896 config_activate_children(ffff800000025a00,6) at config_activate_children+0x1c5 config_suspend sys/kern/subr_autoconf.c:-1 [inline] config_activate_children(ffff800000025a00,6) at config_activate_children+0x1c5 sys/kern/subr_autoconf.c:896 config_activate_children(ffff80000002ce00,6) at config_activate_children+0x1c5 config_suspend sys/kern/subr_autoconf.c:-1 [inline] config_activate_children(ffff80000002ce00,6) at config_activate_children+0x1c5 sys/kern/subr_autoconf.c:896 pciactivate(ffff80000002ce00,6) at pciactivate+0xd8 sys/dev/pci/pci.c:230 config_activate_children(ffff80000002f080,6) at config_activate_children+0x1a1 config_suspend sys/kern/subr_autoconf.c:834 [inline] config_activate_children(ffff80000002f080,6) at config_activate_children+0x1a1 sys/kern/subr_autoconf.c:896 config_suspend_all(6) at config_suspend_all+0x49a config_suspend sys/kern/subr_autoconf.c:-1 [inline] config_suspend_all(6) at config_suspend_all+0x49a sys/kern/subr_autoconf.c:858 end trace frame: 0xffff80002a389560, count: 0 ddb{0}> trace x86_ipi_db(ffffffff838a3ff0) 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(ffffffff83906d80) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83906d80) at __mp_lock+0x199 sys/kern/kern_lock.c:173 scsi_xs_get(ffff8000002a4100,103) at scsi_xs_get+0x15f scsi_iopool_get sys/scsi/scsi_base.c:260 [inline] scsi_xs_get(ffff8000002a4100,103) at scsi_xs_get+0x15f sys/scsi/scsi_base.c:655 sdactivate(ffff8000002a2c00,6) at sdactivate+0x268 sd_flush sys/scsi/sd.c:-1 [inline] sdactivate(ffff8000002a2c00,6) at sdactivate+0x268 sys/scsi/sd.c:271 config_suspend(ffff8000002a2c00,6) at config_suspend+0x62 sys/kern/subr_autoconf.c:834 scsibusactivate(ffff8000002a3500,6) at scsibusactivate+0xab scsi_activate_link sys/scsi/scsiconf.c:410 [inline] scsibusactivate(ffff8000002a3500,6) at scsibusactivate+0xab scsi_activate_bus sys/scsi/scsiconf.c:360 [inline] scsibusactivate(ffff8000002a3500,6) at scsibusactivate+0xab sys/scsi/scsiconf.c:259 config_activate_children(ffff8000000a4000,6) at config_activate_children+0x1a1 config_suspend sys/kern/subr_autoconf.c:834 [inline] config_activate_children(ffff8000000a4000,6) at config_activate_children+0x1a1 sys/kern/subr_autoconf.c:896 config_activate_children(ffff800000025a00,6) at config_activate_children+0x1c5 config_suspend sys/kern/subr_autoconf.c:-1 [inline] config_activate_children(ffff800000025a00,6) at config_activate_children+0x1c5 sys/kern/subr_autoconf.c:896 config_activate_children(ffff80000002ce00,6) at config_activate_children+0x1c5 config_suspend sys/kern/subr_autoconf.c:-1 [inline] config_activate_children(ffff80000002ce00,6) at config_activate_children+0x1c5 sys/kern/subr_autoconf.c:896 pciactivate(ffff80000002ce00,6) at pciactivate+0xd8 sys/dev/pci/pci.c:230 config_activate_children(ffff80000002f080,6) at config_activate_children+0x1a1 config_suspend sys/kern/subr_autoconf.c:834 [inline] config_activate_children(ffff80000002f080,6) at config_activate_children+0x1a1 sys/kern/subr_autoconf.c:896 config_suspend_all(6) at config_suspend_all+0x49a config_suspend sys/kern/subr_autoconf.c:-1 [inline] config_suspend_all(6) at config_suspend_all+0x49a sys/kern/subr_autoconf.c:858 boot(104) at boot+0x253 sys/arch/amd64/amd64/machdep.c:946 reboot(104) at reboot+0xb1 panic(ffffffff833e667f) at panic+0x1f9 kerntrap(ffff80002a389690) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff800001728000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(21e5f,81,2000,ffff80003c452ac0) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,81,2000,ffff80003c452ac0) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80002a389840) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd807b0accc0,81,fffffd80097fd7b8,ffff80003c452ac0) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806df8dc20,ffff80003c452ac0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806df8dc20,ffff80003c452ac0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806df8dc20,ffff80003c452ac0) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806df8dc20,ffff80003c452ac0) at closef+0x192 sys/kern/kern_descrip.c:1264 syscall(ffff80002a389aa0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a389aa0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3b076fd3d0, count: -28 ddb{0}> machine ddbcpu 1 Stopped at savectx+0xae: movl $0,%gs:0x688 savectx() at savectx+0xae end of kernel end trace frame: 0x75f5cb053b60, count: 14 ddb{1}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x75f5cb053b60, count: -1