*cpu0: uvm_fault(0xfffffc006cec63e8, 0x98, 0, 1) -> e ddb{1}> show kasan No such command ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7c4e7b756580, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c47e350 rbx 0 rdx 0 rcx 0xffff800045fe8a88 rax 0x2a r8 0xffff80003c47e280 r9 0x4 r10 0x6606f64fe4f9db54 r11 0xdbd0bcd3619fa959 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff812854c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80003c47e2d0 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=429592 pid=96440 tcnt=2 stat=onproc flags process=0 proc=0 runpri=50, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800045fe9a18,0xffff800035fa2040 process=0xffff800045fe0e98 user=0xffff80003c479000, vmspace=0xfffffc006cec69a0 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND *96440 429592 18660 0 7 0 0 syz-executor 96440 73631 18660 0 3 0 0x4000080 fsleep syz-executor 28060 222268 38960 0 2 0x1000000 0 syz-executor 28060 16315 38960 0 7 0x1000000 0x4000000 syz-executor 28060 491271 38960 0 3 0x1000000 0x4000080 fsleep syz-executor 28060 357646 38960 0 3 0x1000000 0x4000080 fsleep syz-executor 14977 401765 28425 0 3 0 0x80 nanoslp syz-executor 14977 197586 28425 0 3 0 0x4000080 piperd syz-executor 14977 92542 28425 0 3 0 0x4000080 fsleep syz-executor 78474 343708 6568 -1 3 0x10 0x80 nanoslp syz-executor 78474 335955 6568 -1 3 0x10 0x4000080 lockf syz-executor 78474 60454 6568 -1 3 0x10 0x4000080 fsleep syz-executor 59948 355794 53351 60929 3 0x10 0x80 nanoslp syz-executor 59948 496112 53351 60929 2 0x10 0x4000000 syz-executor 59948 199716 53351 60929 3 0x10 0x4000080 fsleep syz-executor 7869 272847 0 0 3 0x14000 0x280 nfsidl nfsio 81819 301089 0 0 3 0x14000 0x280 nfsidl nfsio 81359 504826 0 0 3 0x14000 0x280 nfsidl nfsio 1368 400976 0 0 3 0x14000 0x280 nfsidl nfsio 38715 175701 0 0 3 0x14000 0x280 nfsidl nfsio 45664 241913 0 0 3 0x14000 0x280 nfsidl nfsio 26132 21823 0 0 3 0x14000 0x280 nfsidl nfsio 97121 223902 0 0 3 0x14000 0x280 nfsidl nfsio 6481 496958 0 0 3 0x14000 0x280 nfsidl nfsio 64251 172180 0 0 3 0x14000 0x280 nfsidl nfsio 37483 388278 0 0 3 0x14000 0x280 nfsidl nfsio 73279 244550 0 0 3 0x14000 0x280 nfsidl nfsio 57913 327409 0 0 3 0x14000 0x280 nfsidl nfsio 32875 254867 0 0 3 0x14000 0x280 nfsidl nfsio 72247 372982 0 0 3 0x14000 0x280 nfsidl nfsio 27276 156090 0 0 3 0x14000 0x280 nfsidl nfsio 16061 481820 0 0 3 0x14000 0x280 nfsidl nfsio 66710 353418 0 0 3 0x14000 0x280 nfsidl nfsio 70465 487579 0 0 3 0x14000 0x280 nfsidl nfsio 3685 381845 0 0 3 0x14000 0x280 nfsidl nfsio 74924 2068 11942 0 3 0 0x80 nanoslp syz-executor 74924 110388 11942 0 3 0 0x4000080 kqread syz-executor 74924 90096 11942 0 3 0 0x4000080 fsleep syz-executor 5503 463069 746 0 2 0x2 0 syz-executor 28425 179506 746 0 3 0x2 0x80 nanoslp syz-executor 53351 93427 746 0 3 0x2 0x80 nanoslp syz-executor 6568 309615 746 0 3 0x2 0x80 nanoslp syz-executor 38960 284926 746 0 3 0x2 0x80 nanoslp syz-executor 11942 388153 746 0 3 0x2 0x80 nanoslp syz-executor 18660 116747 746 0 3 0x2 0x80 nanoslp syz-executor 84148 260404 746 0 3 0x2 0x80 nanoslp syz-executor 746 286735 49613 0 3 0x2 0x80 kqread syz-executor 49613 260561 28691 0 3 0x100002 0x88 sigsusp ksh 28691 175261 64607 0 3 0x10 0x88 kqread sshd-session 64607 377846 7788 0 3 0x12 0x80 kqread sshd-session 80986 488524 1 0 3 0x100003 0x80 ttyin getty 7788 294593 1 0 3 0 0x88 kqread sshd 33338 8741 94944 74 3 0x1100012 0x80 bpf pflogd 94944 77391 1 0 3 0 0x80 sbwait pflogd 62915 394558 23253 73 3 0x1100010 0x80 kqread syslogd 23253 165880 1 0 3 0x100002 0x80 sbwait syslogd 28906 495353 1 0 3 0x100000 0x80 kqread resolvd 42296 307686 53481 77 3 0x100012 0x80 kqread dhcpleased 71571 138160 53481 77 2 0x100012 0 dhcpleased 53481 178802 1 0 3 0 0x80 kqread dhcpleased 31623 392002 0 0 3 0x14000 0x200 bored smr 72581 406464 0 0 2 0x14000 0x200 zerothread 22896 41142 0 0 3 0x14000 0x200 aiodoned aiodoned 57349 64645 0 0 3 0x14000 0x200 syncer update 31786 252858 0 0 3 0x14000 0x200 cleaner cleaner 36782 179719 0 0 3 0x14000 0x200 reaper reaper 14467 454696 0 0 3 0x14000 0x200 pgdaemon pagedaemon 81521 286220 0 0 3 0x14000 0x200 bored viomb 41550 199419 0 0 3 0x14000 0x40000200 acpi0 acpi0 57648 311272 0 0 3 0x14000 0x40000200 idle1 39297 251933 0 0 3 0x14000 0x200 bored softnet1 99944 135640 0 0 3 0x14000 0x200 bored softnet0 46647 127694 0 0 3 0x14000 0x200 smrbar systqmp 7352 132753 0 0 3 0x14000 0x200 bored systq 77939 38088 0 0 3 0x14000 0x200 tmoslp softclockmp 3019 358840 0 0 3 0x14000 0x40000200 tmoslp softclock 48725 140566 0 0 3 0x14000 0x40000200 idle0 1 194857 0 0 3 0x2 0x80 wait init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb{1}> show all locks Process 96440 (syz-executor) thread 0xffff800045fe8a88 (429592) shared rwlock uobjlk r = 0 (0xfffffc006e12d220) #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_read+0x3e8 sys/kern/kern_rwlock.c:413 #2 uvm_fault_lower_lookup+0x53 sys/uvm/uvm_fault.c:1204 #3 uvm_fault_lower+0x89 sys/uvm/uvm_fault.c:1334 #4 uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x430 sys/arch/amd64/amd64/trap.c:640 #7 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffc006cec6aa0) #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_read+0x3e8 sys/kern/kern_rwlock.c:413 #2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1880 #3 uvm_fault_check+0x4f sys/uvm/uvm_fault.c:693 #4 uvm_fault+0x106 sys/uvm/uvm_fault.c:627 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x430 sys/arch/amd64/amd64/trap.c:640 #7 recall_trap+0x8 Process 28060 (syz-executor) thread 0xffff800045fe9a18 (16315) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83a38540) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] #1 syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783 #2 Xsyscall+0x128 Process 5503 (syz-executor) thread 0xffff800045ff2a78 (463069) exclusive rrwlock inode r = 0 (0xfffffc00630f18e0) #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+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576 #5 vget+0x2a2 sys/kern/vfs_subr.c:692 #6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203 #8 ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x963 sys/kern/vfs_lookup.c:580 #11 namei+0x7c5 sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1807 #13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffc006d09cea0) #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+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576 #5 vfs_lookup+0x12b sys/kern/vfs_lookup.c:431 #6 namei+0x7c5 sys/kern/vfs_lookup.c:250 #7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1807 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #9 Xsyscall+0x128 Process 46647 (systqmp) thread 0xffff800045ffe530 (127694) shared rwlock systqmp r = 0 (0xffffffff839949d8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 taskq_thread+0x12a sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11056 12147K 12223K 166960K 12330 0 pcb 18 12K 12K 166960K 32 0 rtable 217 6K 7K 166960K 381 0 pf 33 17K 24K 166960K 75 0 ifaddr 39 6K 7K 166960K 46 0 ifgroup 51 2K 2K 166960K 57 0 sysctl 3 1K 9K 166960K 8 0 counters 68 36K 37K 166960K 72 0 ioctlops 0 0K 4K 166960K 1570 0 iov 1 1K 16K 166960K 7 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1290 81K 82K 166960K 1434 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 5 0 VM map 2 1K 1K 166960K 2 0 sem 5 0K 0K 166960K 5 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1734 201K 291K 166960K 11964 0 file desc 17 61K 93K 166960K 227 0 sigio 0 0K 0K 166960K 1 0 proc 75 131K 164K 166960K 568 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 11 0 in_multi 88 5K 6K 166960K 101 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 4 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 61 281K 281K 166960K 61 0 exec 0 0K 1K 166960K 398 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 241 159K 169K 166960K 3984 0 UVM aobj 5 2K 2K 166960K 6 0 pinsyscall 42 84K 104K 166960K 1413 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 1 0 NDP 11 0K 2K 166960K 29 0 temp 37 9114K 9162K 166960K 8423 0 kqueue 14 22K 24K 166960K 36 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 28 0 0 1 0 1 1 0 8 0 rtpcb 120 42 0 39 1 0 1 1 0 8 0 rtentry 176 121 0 21 6 0 6 6 0 8 0 unpcb 144 86 0 69 1 0 1 1 0 8 0 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 736 23 0 17 1 0 1 1 0 8 0 arp 136 21 0 5 1 0 1 1 0 8 0 inpcb 328 123 0 113 2 0 2 2 0 8 1 nd6 152 25 0 3 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 1 0 1 1 0 1 1 0 8 1 pfstscr 40 2 0 0 1 0 1 1 0 8 0 pffrag 232 2 0 2 1 0 1 1 0 482 1 pffrnode 88 2 0 2 1 0 1 1 0 8 1 pffrent 40 4 0 4 1 0 1 1 0 8 1 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 4 0 0 1 0 1 1 0 8 0 pfstitem 24 18 0 0 1 0 1 1 0 8 0 pfstkey 128 18 0 0 1 0 1 1 0 8 0 pfstate 448 17 0 0 2 0 2 2 0 8 0 pfrule 1360 21 0 19 2 0 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 465 0 4 29 0 29 29 0 8 0 art_table 40 466 0 4 5 0 5 5 0 8 0 art_node 32 121 0 18 1 0 1 1 0 8 0 semapl 72 3 0 0 1 0 1 1 0 8 0 shmpl 112 3 0 1 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1735 0 267 93 0 93 93 0 8 0 ffsino 296 1735 0 267 114 0 114 114 0 8 0 nchpl 144 2066 0 360 64 0 64 64 0 8 0 vnodes 216 1864 0 0 104 0 104 104 0 8 0 namei 1024 6575 0 6575 2 0 2 2 0 8 2 percpumem 16 52 0 2 1 0 1 1 0 8 0 kstatmem 264 29 0 4 2 0 2 2 0 8 0 scsiplug 72 2 0 2 1 0 1 1 0 8 1 scxspl 216 7404 0 7404 10 2 8 8 1 8 8 plimitpl 152 36 0 18 1 0 1 1 0 8 0 sigapl 424 573 0 506 8 0 8 8 0 8 0 knotepl 120 308 0 0 10 0 10 10 0 8 0 kqueuepl 224 42 0 31 1 0 1 1 0 8 0 pipepl 344 137 0 109 3 0 3 3 0 8 0 fdescpl 528 537 0 506 3 0 3 3 0 8 0 filepl 160 2157 0 1930 10 0 10 10 0 8 0 lockfpl 104 36 0 28 1 0 1 1 0 8 0 lockfspl 48 20 0 14 1 0 1 1 0 8 0 sessionpl 144 29 0 20 1 0 1 1 0 8 0 pgrppl 48 38 0 21 1 0 1 1 0 8 0 ucredpl 104 211 0 196 1 0 1 1 0 8 0 zombiepl 144 507 0 506 1 0 1 1 0 8 0 processpl 1232 573 0 506 6 0 6 6 0 8 0 procpl 664 745 0 666 7 0 7 7 0 8 0 sockpl 752 253 0 223 4 0 4 4 0 8 0 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl9k128 9344 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 124 0 0 16 0 16 16 0 8 0 mcl2k 2048 17 0 0 3 0 3 3 0 8 0 mextrefs 64 17 0 0 1 0 1 1 0 8 0 mtagpl 96 1 0 0 1 0 1 1 0 8 0 mbufpl 256 127 0 0 8 0 8 8 0 8 0 bufpl 272 2543 0 106 163 0 163 163 0 8 0 anonpl 32 7423 0 0 60 0 60 60 0 247 0 amapchunkpl 152 11091 0 10581 23 0 23 23 0 158 2 amappl16 200 1588 0 1563 11 0 11 11 0 8 8 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 440 0 439 1 0 1 1 0 8 0 amappl13 176 127 0 115 1 0 1 1 0 8 0 amappl12 168 892 0 862 2 0 2 2 0 8 0 amappl11 160 4 0 3 1 0 1 1 0 8 0 amappl10 152 62 0 48 1 0 1 1 0 8 0 amappl9 144 301 0 301 1 1 0 1 0 8 0 amappl8 136 103 0 100 1 0 1 1 0 8 0 amappl7 128 152 0 139 1 0 1 1 0 8 0 amappl6 120 179 0 178 1 0 1 1 0 8 0 amappl5 112 95 0 85 1 0 1 1 0 8 0 amappl4 104 299 0 279 1 0 1 1 0 8 0 amappl3 96 1959 0 1858 3 0 3 3 0 8 0 amappl2 88 661 0 585 2 0 2 2 0 8 0 amappl1 80 10996 0 10378 15 0 15 15 0 8 1 amappl 88 3216 0 3048 4 0 4 4 0 92 0 uvmvnodes 80 100 0 0 3 0 3 3 0 8 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 128 254 0 254 2 1 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 18 0 17 1 0 1 1 0 8 0 aobjpl 72 5 0 1 1 0 1 1 0 8 0 uaddrrnd 24 537 0 506 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 537 0 506 1 0 1 1 0 8 0 vmmpekpl 168 6506 0 6469 2 0 2 2 0 8 0 vmmpepl 168 43365 0 41435 94 0 94 94 0 357 7 vmsppl 488 536 0 506 5 0 5 5 0 8 0 rwobjpl 80 15370 0 14324 25 0 25 25 0 8 3 pdppl 4096 1081 0 1012 101 28 73 85 0 8 4 pvpl 32 14378 0 0 117 1 116 116 0 265 0 pmappl 256 536 0 506 3 0 3 3 0 8 0 extentpl 40 46 0 28 1 0 1 1 0 8 0 phpool 112 434 0 30 12 0 12 12 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83966ff0) 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 x86_bus_space_io_read_4(b008,0) at x86_bus_space_io_read_4+0x37 sys/arch/amd64/amd64/bus_space.c:682 acpitimer_delay(1) at acpitimer_delay+0x57 acpitimer_read sys/dev/acpi/acpitimer.c:141 [inline] acpitimer_delay(1) at acpitimer_delay+0x57 sys/dev/acpi/acpitimer.c:120 comcnputc(800,65) at comcnputc+0x29b sys/dev/ic/com.c:1274 cnputc(65) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(65) at db_putchar+0x36d sys/ddb/db_output.c:155 kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1 db_printf(ffffffff8346140f) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff83525b43) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff80003c458590,98) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff80003c458590) at kerntrap+0x19d sys/arch/amd64/amd64/trap.c:528 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b end trace frame: 0xffff80003c458740, count: 0 ddb{0}> trace x86_ipi_db(ffffffff83966ff0) 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 x86_bus_space_io_read_4(b008,0) at x86_bus_space_io_read_4+0x37 sys/arch/amd64/amd64/bus_space.c:682 acpitimer_delay(1) at acpitimer_delay+0x57 acpitimer_read sys/dev/acpi/acpitimer.c:141 [inline] acpitimer_delay(1) at acpitimer_delay+0x57 sys/dev/acpi/acpitimer.c:120 comcnputc(800,65) at comcnputc+0x29b sys/dev/ic/com.c:1274 cnputc(65) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(65) at db_putchar+0x36d sys/ddb/db_output.c:155 kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1 db_printf(ffffffff8346140f) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff83525b43) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff80003c458590,98) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff80003c458590) at kerntrap+0x19d sys/arch/amd64/amd64/trap.c:528 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff800045fe9a18,fffffc005fdbf498,ffff80003c458770) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691 sys_futimes(ffff800045fe9a18,ffff80003c4588c0,ffff80003c458810) at sys_futimes+0x208 sys/kern/vfs_syscalls.c:2733 syscall(ffff80003c4588c0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4588c0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9156444a1d0, count: -18 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: 0x7c4e7b756580, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7c4e7b756580, count: -1