*cpu0: uvm_fault(0xffffffff8353da28, 0xffff8000126b41b4, 0, 2) -> d ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7e8e89005cb0, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff8000371f7f60 rbx 0 rdx 0 rcx 0xffff800034d9d978 rax 0x2a r8 0xffff8000371f7e90 r9 0x2e641ec8001 r10 0xcfc70c2254cf2162 r11 0x98bde64d6e1fe3cd r12 0 r13 0 r14 0 r15 0 rip 0xffffffff824554c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff8000371f7ee0 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x680 ddb{1}> show proc PROC (syz-executor) tid=447716 pid=87896 tcnt=1 stat=onproc flags process=2 proc=0 runpri=50, usrpri=50, slppri=16, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800034d9c7c0,0xffff800034d9d478 process=0xffff80003728a440 user=0xffff8000371f2000, vmspace=0xfffffd807c7bf1c0 estcpu=36, cpticks=2, pctcpu=0.4, user=0, sys=7, intr=1 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 75028 420933 87896 0 2 0 syz-executor 75028 434623 87896 0 2 0x4000000 syz-executor 75028 319113 87896 0 3 0x4000080 fsleep syz-executor 75028 157519 87896 0 3 0x4000080 fsleep syz-executor 37483 57872 48539 0 2 0 syz-executor 37483 95523 48539 0 2 0x4000000 syz-executor 54378 341395 78278 0 2 0 syz-executor 54378 163007 78278 0 3 0x4000080 fsleep syz-executor 97080 66722 24001 0 2 0 syz-executor 97080 313363 24001 0 3 0x4000080 kqpoll syz-executor 97080 436390 24001 0 3 0x4000080 kqsel syz-executor 47879 434176 98201 0 2 0 syz-executor 47879 408597 98201 0 3 0x4000080 fsleep syz-executor 79689 164111 12708 0 2 0x480 syz-executor 79689 103067 12708 0 3 0x4000080 sbwait syz-executor 79689 104778 12708 0 3 0x4000080 sbwait syz-executor 26015 84475 47603 0 3 0x82 piperd syz-executor 78278 215428 47603 0 2 0x482 syz-executor 24001 239666 47603 0 2 0x482 syz-executor *87896 447716 47603 0 7 0x2 syz-executor 98201 422996 47603 0 2 0x482 syz-executor 12708 45681 47603 0 2 0x2 syz-executor 48539 212687 47603 0 2 0x482 syz-executor 95591 518106 47603 0 3 0x82 piperd syz-executor 59533 293556 0 0 3 0x14280 nfsidl nfsio 77529 341009 0 0 3 0x14280 nfsidl nfsio 12502 90151 0 0 3 0x14280 nfsidl nfsio 43401 386133 0 0 3 0x14280 nfsidl nfsio 54510 100776 0 0 3 0x14280 nfsidl nfsio 33512 279500 0 0 3 0x14280 nfsidl nfsio 57882 325595 0 0 3 0x14280 nfsidl nfsio 47338 204197 0 0 3 0x14280 nfsidl nfsio 46341 235351 0 0 3 0x14280 nfsidl nfsio 71840 260716 0 0 3 0x14280 nfsidl nfsio 33300 106629 0 0 3 0x14280 nfsidl nfsio 99654 390119 0 0 3 0x14280 nfsidl nfsio 12939 421398 0 0 3 0x14280 nfsidl nfsio 99755 309215 0 0 3 0x14280 nfsidl nfsio 12174 268229 0 0 3 0x14280 nfsidl nfsio 20379 294566 0 0 3 0x14280 nfsidl nfsio 51841 49194 0 0 3 0x14280 nfsidl nfsio 5909 391738 0 0 3 0x14280 nfsidl nfsio 95259 210692 0 0 3 0x14280 nfsidl nfsio 76783 134433 0 0 3 0x14280 nfsidl nfsio 29676 106031 0 0 3 0x14200 bored sosplice 47603 9955 61912 0 2 0x2 syz-executor 61912 107482 67057 0 3 0x10008a sigsusp ksh 67057 473002 20340 0 3 0x98 kqread sshd-session 20340 415838 49249 0 3 0x92 kqread sshd-session 8640 515340 1 0 3 0x100083 ttyin getty 49249 352037 1 0 3 0x88 kqread sshd 56271 30407 79167 74 3 0x1100092 bpf pflogd 79167 458518 1 0 3 0x80 sbwait pflogd 99302 263477 89967 73 7 0x1100011 syslogd 89967 363831 1 0 3 0x100082 sbwait syslogd 57955 242026 1 0 3 0x100080 kqread resolvd 46602 405227 45561 77 3 0x100092 kqread dhcpleased 20226 430957 45561 77 3 0x100092 kqread dhcpleased 45561 313806 1 0 3 0x80 kqread dhcpleased 65190 407939 0 0 3 0x14200 bored smr 56855 271420 0 0 2 0x14200 zerothread 19201 170665 0 0 3 0x14200 aiodoned aiodoned 77779 301458 0 0 3 0x14200 syncer update 7528 276228 0 0 3 0x14200 cleaner cleaner 47729 133856 0 0 3 0x14200 reaper reaper 61014 306709 0 0 3 0x14200 pgdaemon pagedaemon 19651 377390 0 0 3 0x14200 bored viomb 14885 379385 0 0 3 0x40014200 acpi0 acpi0 1748 187379 0 0 3 0x40014200 idle1 77229 410480 0 0 3 0x14200 bored softnet3 86148 174799 0 0 3 0x14200 bored softnet2 96146 128277 0 0 3 0x14200 bored softnet1 46442 45235 0 0 3 0x14200 bored softnet0 99704 205063 0 0 3 0x14200 bored systqmp 82443 117432 0 0 3 0x14200 bored systq 52864 25477 0 0 3 0x14200 tmoslp softclockmp 34652 506483 0 0 3 0x40014200 tmoslp softclock 94124 241898 0 0 3 0x40014200 idle0 1 303313 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806bef68d8) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 pmap_enter+0x246 rcr3 machine/cpufunc.h:139 [inline] #3 pmap_enter+0x246 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:432 [inline] #3 pmap_enter+0x246 sys/arch/amd64/amd64/pmap.c:2791 #4 uvm_fault_upper+0x376 sys/uvm/uvm_fault.c:1056 #5 uvm_fault+0x1b2 sys/uvm/uvm_fault.c:608 #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 87896 (syz-executor) thread 0xffff800034d9d978 (447716) exclusive rwlock amaplk r = 0 (0xfffffd8064698328) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 uvm_fault_check+0x521 sys/uvm/uvm_fault.c:782 #2 uvm_fault+0x112 sys/uvm/uvm_fault.c:600 #3 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #4 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #5 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd807c7bf2b0) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 #2 uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 #3 uvm_fault+0x112 sys/uvm/uvm_fault.c:600 #4 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #5 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #6 recall_trap+0x8 exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806bef68d8) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 pmap_enter+0x246 rcr3 machine/cpufunc.h:139 [inline] #3 pmap_enter+0x246 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:432 [inline] #3 pmap_enter+0x246 sys/arch/amd64/amd64/pmap.c:2791 #4 uvm_fault_upper+0x376 sys/uvm/uvm_fault.c:1056 #5 uvm_fault+0x1b2 sys/uvm/uvm_fault.c:608 #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 99302 (syslogd) thread 0xffff8000ffffdbe8 (263477) exclusive rrwlock inode r = 0 (0xfffffd807bd58a38) #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 iovec_copyin+0x20a sys/kern/sys_generic.c:120 #9 sys_writev+0x67 sys/kern/sys_generic.c:319 #10 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #10 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83628520) #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 iovec_copyin+0x20a sys/kern/sys_generic.c:120 #3 sys_writev+0x67 sys/kern/sys_generic.c:319 #4 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #4 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #5 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10203 10114K 10480K 166960K 11937 0 pcb 17 15K 16K 166960K 217 0 rtable 236 8K 8K 166960K 1380 0 pf 37 18K 19K 166960K 125 0 ifaddr 44 8K 8K 166960K 181 0 ifgroup 59 2K 2K 166960K 194 0 sysctl 2 0K 0K 166960K 2 0 counters 66 36K 36K 166960K 136 0 ioctlops 0 0K 4K 166960K 1560 0 iov 0 0K 16K 166960K 32 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1416 89K 89K 166960K 2261 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 6 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 16 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1690 195K 286K 166960K 12418 0 file desc 16 57K 93K 166960K 1042 0 sigio 0 0K 0K 166960K 4 0 proc 72 91K 128K 166960K 1437 0 subproc 104 6K 7K 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 151 0 in_multi 99 7K 7K 166960K 472 0 ether_multi 1 0K 0K 166960K 4 0 mrt 1 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 67 307K 307K 166960K 67 0 exec 0 0K 1K 166960K 811 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 234 72K 93K 166960K 9466 0 UVM aobj 5 2K 4K 166960K 6 0 pinsyscall 41 82K 104K 166960K 2917 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 32 0 NDP 19 0K 2K 166960K 128 0 temp 53 6818K 6884K 166960K 28840 0 kqueue 15 22K 28K 166960K 94 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 120 121 0 117 1 0 1 1 0 8 0 rtentry 112 471 0 363 5 1 4 4 0 8 0 unpcb 144 693 0 673 13 12 1 8 0 8 0 syncache 336 3 0 3 2 2 0 1 0 8 0 tcpcb 808 145 0 141 4 3 1 4 0 8 0 arp 120 85 0 66 1 0 1 1 0 8 0 inpcb 336 1123 0 1115 29 27 2 14 0 8 1 nd6 136 122 0 98 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 1 0 1 0 8 0 kcovpl 48 39 0 31 1 0 1 1 0 8 0 ppxss 1168 4 0 4 2 2 0 1 0 8 0 pffrag 232 4 0 1 1 0 1 1 0 482 0 pffrnode 88 4 0 1 1 0 1 1 0 8 0 pffrent 40 4 0 1 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 24 111 0 77 1 0 1 1 0 8 0 pfstkey 128 111 0 77 2 0 2 2 0 8 0 pfstate 376 110 0 77 6 1 5 6 0 8 0 pfrule 1344 39 0 33 2 0 2 2 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1861 0 1408 32 3 29 29 0 8 0 art_table 32 1862 0 1408 4 0 4 4 0 8 0 art_node 16 469 0 372 1 0 1 1 0 8 0 sysvmsgpl 40 103 0 101 1 0 1 1 0 8 0 semapl 112 14 0 4 1 0 1 1 0 8 0 shmpl 112 3 0 1 1 0 1 1 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 2545 0 980 98 0 98 98 0 8 0 ffsino 272 2545 0 980 106 1 105 105 0 8 0 nchpl 144 3386 0 1656 65 0 65 65 0 8 0 uvmvnodes 80 3241 0 0 67 0 67 67 0 8 0 vnodes 216 3241 0 0 181 0 181 181 0 8 0 namei 1024 14012 0 14012 6 5 1 2 0 8 1 percpumem 16 82 0 35 1 0 1 1 0 8 0 kstatmem 264 96 0 70 2 0 2 2 0 8 0 scxspl 216 19620 0 19620 9 8 1 8 1 8 1 plimitpl 152 174 0 157 1 0 1 1 0 8 0 sigapl 424 1300 0 1231 10 1 9 9 0 8 0 futexpl 64 7010 0 7006 5 4 1 1 0 8 0 knotepl 120 365 0 0 12 0 12 12 0 8 0 kqueuepl 216 180 0 166 3 2 1 3 0 8 0 pipepl 320 313 0 286 3 0 3 3 0 8 0 fdescpl 496 1260 0 1230 7 2 5 5 0 8 0 filepl 152 6692 0 6441 31 21 10 20 0 8 0 lockfpl 104 200 0 198 1 0 1 1 0 8 0 lockfspl 48 98 0 96 1 0 1 1 0 8 0 sessionpl 144 53 0 44 1 0 1 1 0 8 0 pgrppl 48 92 0 75 1 0 1 1 0 8 0 ucredpl 104 1097 0 1084 1 0 1 1 0 8 0 zombiepl 144 1231 0 1231 1 0 1 1 0 8 1 processpl 1160 1300 0 1231 6 0 6 6 0 8 0 procpl 648 2070 0 1991 9 1 8 8 0 8 0 srpgc 96 2 0 2 1 1 0 1 0 8 0 sosppl 168 1 0 1 1 1 0 1 0 8 0 sockpl 664 1944 0 1912 46 42 4 25 0 8 0 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 266 0 0 34 0 34 34 0 8 0 mtagpl 96 72 0 0 2 0 2 2 0 8 0 mbufpl 256 420 0 0 24 0 24 24 0 8 1 bufpl 280 7427 0 1139 450 0 450 450 0 8 0 anonpl 24 307959 0 304149 91 6 85 90 0 185 46 amapchunkpl 152 31307 0 30798 43 5 38 42 0 158 16 amappl16 200 7902 0 7884 34 28 6 18 0 8 3 amappl15 192 20 0 20 1 1 0 1 0 8 0 amappl14 184 209 0 197 1 0 1 1 0 8 0 amappl13 176 14 0 14 1 1 0 1 0 8 0 amappl12 168 2406 0 2376 3 1 2 2 0 8 0 amappl11 160 60 0 46 1 0 1 1 0 8 0 amappl10 152 13 0 13 1 1 0 1 0 8 0 amappl9 144 148 0 148 1 1 0 1 0 8 0 amappl8 136 24 0 21 1 0 1 1 0 8 0 amappl7 128 191 0 179 1 0 1 1 0 8 0 amappl6 120 476 0 475 1 0 1 1 0 8 0 amappl5 112 261 0 249 1 0 1 1 0 8 0 amappl4 104 400 0 380 1 0 1 1 0 8 0 amappl3 96 5779 0 5670 4 0 4 4 0 8 0 amappl2 88 1123 0 1055 2 0 2 2 0 8 0 amappl1 80 12093 0 11536 16 3 13 14 0 8 0 amappl 88 8843 0 8671 5 0 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 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 5 0 1 1 0 1 1 0 8 0 uaddrrnd 24 1260 0 1230 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1260 0 1230 1 0 1 1 0 8 0 vmmpekpl 168 11403 0 11352 5 1 4 4 0 8 0 vmmpepl 168 87881 0 86081 110 23 87 97 0 357 3 vmsppl 440 1259 0 1230 6 2 4 5 0 8 0 rwobjpl 56 32897 0 28734 61 1 60 60 0 8 0 pdppl 4096 2527 0 2460 140 63 77 85 0 8 10 pvpl 32 46907 0 0 380 2 378 378 0 265 0 pmappl 248 1259 0 1230 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 488 0 108 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff834f4ff0) 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 x86_bus_space_io_read_4(b008,0) at x86_bus_space_io_read_4+0x37 sys/arch/amd64/amd64/bus_space.c:666 acpitimer_delay(1) at acpitimer_delay+0xb7 acpitimer_read sys/dev/acpi/acpitimer.c:146 [inline] acpitimer_delay(1) at acpitimer_delay+0xb7 sys/dev/acpi/acpitimer.c:120 comcnputc(800,66) at comcnputc+0x29b sys/dev/ic/com.c:1269 cnputc(66) at cnputc+0x61 sys/dev/cons.c:218 db_putchar(66) at db_putchar+0x65c sys/ddb/db_output.c:155 kprintf() at kprintf+0x2aba sys/kern/subr_prf.c:1065 db_printf(ffffffff8309367f) at db_printf+0x9b fault(ffffffff8303e9bb) at fault+0xa7 sys/arch/amd64/amd64/trap.c:157 kpageflttrap(ffff80002a06a300,ffff8000126b41b4) at kpageflttrap+0x385 sys/arch/amd64/amd64/trap.c:290 kerntrap(ffff80002a06a300) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b end trace frame: 0xffff80002a06a5c0, count: 0 ddb{0}> trace x86_ipi_db(ffffffff834f4ff0) 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 x86_bus_space_io_read_4(b008,0) at x86_bus_space_io_read_4+0x37 sys/arch/amd64/amd64/bus_space.c:666 acpitimer_delay(1) at acpitimer_delay+0xb7 acpitimer_read sys/dev/acpi/acpitimer.c:146 [inline] acpitimer_delay(1) at acpitimer_delay+0xb7 sys/dev/acpi/acpitimer.c:120 comcnputc(800,66) at comcnputc+0x29b sys/dev/ic/com.c:1269 cnputc(66) at cnputc+0x61 sys/dev/cons.c:218 db_putchar(66) at db_putchar+0x65c sys/ddb/db_output.c:155 kprintf() at kprintf+0x2aba sys/kern/subr_prf.c:1065 db_printf(ffffffff8309367f) at db_printf+0x9b fault(ffffffff8303e9bb) at fault+0xa7 sys/arch/amd64/amd64/trap.c:157 kpageflttrap(ffff80002a06a300,ffff8000126b41b4) at kpageflttrap+0x385 sys/arch/amd64/amd64/trap.c:290 kerntrap(ffff80002a06a300) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b memset() at memset+0x49 ffs_write(ffff80002a06a6a0) at ffs_write+0xbab sys/ufs/ffs/ffs_vnops.c:401 VOP_WRITE(fffffd807bd673c0,ffff80002a06a758,3,fffffd807f7d34e0) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000ffffdbe8,fffffd807bd673c0,fffffd807f7d34e0,ffff80002a06a828,ffff80002a06a800) at ktrwriteraw+0x1bc sys/kern/kern_ktrace.c:682 ktrstruct(ffff8000ffffdbe8,ffffffff830a062e,ffff80002a06a960,70) at ktrstruct+0x19a sys/kern/kern_ktrace.c:308 iovec_copyin(71d002999250,ffff80002a06aa18,ffff80002a06a960,7,ffff80002a06aa10) at iovec_copyin+0x20a sys/kern/sys_generic.c:120 sys_writev(ffff8000ffffdbe8,ffff80002a06ab50,ffff80002a06aaa0) at sys_writev+0x67 sys/kern/sys_generic.c:319 syscall(ffff80002a06ab50) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a06ab50) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x71d002996fb0, count: -23 ddb{0}> machine ddbcpu 1 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x680 proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7e8e89005cb0, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7e8e89005cb0, count: -1