*cpu1: uvm_fault(0xfffffc806cbff020, 0x98, 0, 1) -> e ddb{0}> show kasan No such command ddb{0}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7336300082c0, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff8000357977b0 rbx 0 rdx 0 rcx 0xffff800033f8cfb0 rax 0x2a r8 0xffff8000357976e0 r9 0x4 r10 0x6d6b2100fd7c142e r11 0x323252d1438da16d r12 0 r13 0 r14 0 r15 0 rip 0xffffffff8299e4c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff800035797730 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{0}> show proc PROC (syz-executor) tid=348487 pid=97848 tcnt=1 stat=onproc flags process=0 proc=0 runpri=73, usrpri=73, slppri=16, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800045fef4d8,0xffffffff83a01cb0 process=0xffff80003c3d9360 user=0xffff800035792000, vmspace=0xfffffc806ceed018 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND *97848 348487 39846 0 7 0 0 syz-executor 25999 120358 95545 0 2 0 0 syz-executor 25999 222037 95545 0 3 0 0x4000080 fsleep syz-executor 77198 403884 89385 0 2 0 0 syz-executor 77198 116881 89385 0 2 0 0x4000000 syz-executor 25304 428921 42046 0 2 0 0 syz-executor 25304 212422 42046 0 3 0 0x4000080 fsleep syz-executor 25304 380425 42046 0 3 0 0x4000080 fsleep syz-executor 62464 353085 44992 0 2 0x10 0 syz-executor 62464 130325 44992 0 3 0x10 0x4000080 fsleep syz-executor 6252 461657 26357 0 2 0 0 syz-executor 6252 240485 26357 0 7 0 0x4000000 syz-executor 17574 257083 65626 60929 2 0x10 0 syz-executor 17574 160 65626 60929 2 0x10 0x4000000 syz-executor 17574 349418 65626 60929 3 0x10 0x4000080 fsleep syz-executor 65626 43013 68462 0 3 0x2 0x80 nanoslp syz-executor 88463 188353 68462 0 3 0x2 0 biowait syz-executor 89385 404278 68462 0 3 0x2 0x80 nanoslp syz-executor 39846 191912 68462 0 3 0x2 0x80 nanoslp syz-executor 44992 411352 68462 0 2 0x2 0 syz-executor 42046 359673 68462 0 3 0x2 0x80 nanoslp syz-executor 26357 203529 68462 0 3 0x2 0x80 nanoslp syz-executor 95545 265621 68462 0 3 0x2 0x80 nanoslp syz-executor 68462 422967 51253 0 3 0x2 0x80 kqread syz-executor 51253 238771 88937 0 3 0x100002 0x88 sigsusp ksh 88937 484469 11644 0 3 0x10 0x88 kqread sshd-session 11644 287630 55501 0 3 0x12 0x80 kqread sshd-session 67375 339561 1 0 3 0x100003 0x80 ttyin getty 55501 205259 1 0 3 0 0x88 kqread sshd 10505 171819 66202 74 3 0x1100012 0x80 bpf pflogd 66202 384585 1 0 3 0 0x80 sbwait pflogd 55432 62284 76254 73 3 0x1100010 0x80 kqread syslogd 76254 12177 1 0 3 0x100002 0x80 sbwait syslogd 95922 299061 1 0 3 0x100000 0x80 kqread resolvd 51893 105589 6681 77 3 0x100012 0x80 kqread dhcpleased 45457 498517 6681 77 3 0x100012 0x80 kqread dhcpleased 6681 111490 1 0 3 0 0x80 kqread dhcpleased 33175 68227 0 0 3 0x14000 0x200 bored smr 88914 283602 0 0 2 0x14000 0x200 zerothread 75668 40737 0 0 3 0x14000 0x200 aiodoned aiodoned 78714 211586 0 0 3 0x14000 0x200 syncer update 87890 34331 0 0 3 0x14000 0x200 cleaner cleaner 8888 27383 0 0 3 0x14000 0x200 reaper reaper 1666 510435 0 0 3 0x14000 0x200 pgdaemon pagedaemon 18695 358001 0 0 3 0x14000 0x200 bored viomb 21292 394501 0 0 3 0x14000 0x40000200 acpi0 acpi0 92245 313104 0 0 3 0x14000 0x40000200 idle1 63735 177812 0 0 3 0x14000 0x200 bored softnet1 76933 298023 0 0 3 0x14000 0x200 bored softnet0 96293 330321 0 0 3 0x14000 0x200 smrbar systqmp 51862 316034 0 0 3 0x14000 0x200 bored systq 2772 479899 0 0 3 0x14000 0x200 tmoslp softclockmp 46216 272001 0 0 3 0x14000 0x40000200 tmoslp softclock 41768 24083 0 0 3 0x14000 0x40000200 idle0 1 125733 0 0 3 0x2 0x80 wait init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &pmap->pm_mtx r = 0 (0xfffffc806cbfe110) #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 pmap_enter+0x24b rcr3 sys/arch/amd64/compile/SYZKALLER/obj/machine/cpufunc.h:139 [inline] #2 pmap_enter+0x24b pmap_map_ptes sys/arch/amd64/amd64/pmap.c:441 [inline] #2 pmap_enter+0x24b sys/arch/amd64/amd64/pmap.c:2777 #3 uvm_fault_lower_lookup+0x369 sys/uvm/uvm_fault.c:-1 #4 uvm_fault_lower+0x89 sys/uvm/uvm_fault.c:1334 #5 uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 #6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #7 usertrap+0x430 sys/arch/amd64/amd64/trap.c:640 #8 recall_trap+0x8 Process 97848 (syz-executor) thread 0xffff800033f8cfb0 (348487) shared rwlock uobjlk r = 0 (0xfffffc806df51c38) #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 (0xfffffc806ceed118) #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 exclusive mutex &pmap->pm_mtx r = 0 (0xfffffc806cbfe110) #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 pmap_enter+0x24b rcr3 sys/arch/amd64/compile/SYZKALLER/obj/machine/cpufunc.h:139 [inline] #2 pmap_enter+0x24b pmap_map_ptes sys/arch/amd64/amd64/pmap.c:441 [inline] #2 pmap_enter+0x24b sys/arch/amd64/amd64/pmap.c:2777 #3 uvm_fault_lower_lookup+0x369 sys/uvm/uvm_fault.c:-1 #4 uvm_fault_lower+0x89 sys/uvm/uvm_fault.c:1334 #5 uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 #6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #7 usertrap+0x430 sys/arch/amd64/amd64/trap.c:640 #8 recall_trap+0x8 Process 6252 (syz-executor) thread 0xffff800033f8cd18 (240485) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83b124c0) #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 88463 (syz-executor) thread 0xffff800045fef770 (188353) exclusive rrwlock inode r = 0 (0xfffffc806c3db7b8) #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 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline] #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:150 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232 #6 ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3063 #10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffc806d8efd70) #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 domkdirat+0x8b sys/kern/vfs_syscalls.c:3048 #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 96293 (systqmp) thread 0xffff800045ffe000 (330321) shared rwlock systqmp r = 0 (0xffffffff839008f8) #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{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11057 12086K 12092K 166960K 12151 0 pcb 17 12K 12K 166960K 24 0 rtable 237 6K 7K 166960K 359 0 pf 34 17K 18K 166960K 45 0 ifaddr 43 7K 7K 166960K 45 0 ifgroup 55 2K 2K 166960K 55 0 sysctl 1 1K 9K 166960K 5 0 counters 70 37K 37K 166960K 70 0 ioctlops 0 0K 4K 166960K 1484 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1292 81K 81K 166960K 1363 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 3 0 VM map 2 1K 1K 166960K 2 0 sem 3 0K 0K 166960K 3 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1734 201K 291K 166960K 11964 0 file desc 17 61K 89K 166960K 149 0 proc 72 115K 164K 166960K 557 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 in_multi 99 6K 6K 166960K 99 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 5 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 43 201K 201K 166960K 43 0 exec 0 0K 1K 166960K 395 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 220 158K 167K 166960K 3330 0 UVM aobj 5 2K 2K 166960K 5 0 pinsyscall 42 84K 104K 166960K 1345 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 28 2K 2K 166960K 28 0 temp 35 9114K 9120K 166960K 5117 0 kqueue 13 20K 24K 166960K 29 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> 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 37 0 34 1 0 1 1 0 8 0 rtentry 176 111 0 1 5 0 5 5 0 8 0 unpcb 144 47 0 30 1 0 1 1 0 8 0 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 736 10 0 6 1 0 1 1 0 8 0 arp 136 18 0 0 1 0 1 1 0 8 0 inpcb 328 73 0 66 1 0 1 1 0 8 0 nd6 152 24 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 pffrent 40 1 0 1 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 pfsrclim 320 1 0 1 1 0 1 1 0 8 1 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 18 0 0 2 0 2 2 0 8 0 pfrule 1360 21 0 15 2 0 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 453 0 0 29 0 29 29 0 8 0 art_table 40 454 0 0 5 0 5 5 0 8 0 art_node 32 111 0 10 1 0 1 1 0 8 0 semapl 72 1 0 0 1 0 1 1 0 8 0 shmpl 112 2 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1583 0 112 93 0 93 93 0 8 0 ffsino 296 1583 0 112 114 0 114 114 0 8 0 nchpl 144 1799 0 95 64 0 64 64 0 8 0 vnodes 216 1673 0 0 93 0 93 93 0 8 0 namei 1024 5551 0 5550 2 0 2 2 0 8 1 percpumem 16 51 0 0 1 0 1 1 0 8 0 kstatmem 264 27 0 0 2 0 2 2 0 8 0 scxspl 216 6218 0 6217 4 3 1 3 1 8 0 plimitpl 152 29 0 12 1 0 1 1 0 8 0 sigapl 424 478 0 431 7 0 7 7 0 8 1 knotepl 120 57 0 0 2 0 2 2 0 8 0 kqueuepl 224 25 0 16 1 0 1 1 0 8 0 pipepl 344 130 0 103 3 0 3 3 0 8 0 fdescpl 528 462 0 431 3 0 3 3 0 8 0 filepl 160 1628 0 1415 10 0 10 10 0 8 0 lockfpl 104 6 0 4 1 0 1 1 0 8 0 lockfspl 48 4 0 2 1 0 1 1 0 8 0 sessionpl 144 26 0 17 1 0 1 1 0 8 0 pgrppl 48 34 0 17 1 0 1 1 0 8 0 ucredpl 104 97 0 82 1 0 1 1 0 8 0 zombiepl 144 431 0 431 1 0 1 1 0 8 1 processpl 1232 478 0 431 5 0 5 5 0 8 0 procpl 664 505 0 450 5 0 5 5 0 8 0 sockpl 752 157 0 130 4 0 4 4 0 8 1 mcl64k 65536 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 128 0 0 16 0 16 16 0 8 0 mcl2k 2048 14 0 0 2 0 2 2 0 8 0 mextrefs 64 7 0 0 1 0 1 1 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 122 0 0 8 0 8 8 0 8 0 bufpl 272 2311 0 105 148 0 148 148 0 8 0 anonpl 32 3796 0 0 31 0 31 31 0 247 0 amapchunkpl 152 8934 0 8477 19 0 19 19 0 158 0 amappl16 200 1741 0 1723 5 0 5 5 0 8 4 amappl15 192 25 0 25 2 1 1 1 0 8 1 amappl14 184 443 0 442 1 0 1 1 0 8 0 amappl13 176 128 0 116 1 0 1 1 0 8 0 amappl12 168 727 0 698 2 0 2 2 0 8 0 amappl11 160 8 0 8 1 0 1 1 0 8 1 amappl10 152 66 0 52 1 0 1 1 0 8 0 amappl9 144 273 0 272 1 0 1 1 0 8 0 amappl8 136 130 0 128 1 0 1 1 0 8 0 amappl7 128 147 0 134 1 0 1 1 0 8 0 amappl6 120 155 0 154 1 0 1 1 0 8 0 amappl5 112 101 0 91 1 0 1 1 0 8 0 amappl4 104 297 0 279 1 0 1 1 0 8 0 amappl3 96 1593 0 1505 3 0 3 3 0 8 0 amappl2 88 589 0 513 2 0 2 2 0 8 0 amappl1 80 10604 0 10007 14 0 14 14 0 8 0 amappl 88 2570 0 2421 4 0 4 4 0 92 0 uvmvnodes 80 98 0 0 2 0 2 2 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 128 253 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 4 0 0 1 0 1 1 0 8 0 uaddrrnd 24 462 0 431 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 462 0 431 1 0 1 1 0 8 0 vmmpekpl 168 5882 0 5848 2 0 2 2 0 8 0 vmmpepl 168 39395 0 37530 86 0 86 86 0 357 1 vmsppl 488 461 0 431 5 0 5 5 0 8 0 rwobjpl 80 14794 0 13795 25 1 24 24 0 8 2 pdppl 4096 931 0 862 99 16 83 83 0 8 14 pvpl 32 9376 0 0 76 0 76 76 0 265 0 pmappl 256 461 0 431 3 0 3 3 0 8 0 extentpl 40 46 0 28 1 0 1 1 0 8 0 phpool 112 415 0 18 12 0 12 12 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7336300082c0, count: -1 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff80002999dff0) 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_1(3f8,5) at x86_bus_space_io_read_1+0x37 sys/arch/amd64/amd64/bus_space.c:670 comcnputc(800,20) at comcnputc+0xd0 comcn_read_reg sys/dev/ic/com.c:1671 [inline] comcnputc(800,20) at comcnputc+0xd0 sys/dev/ic/com.c:1264 cnputc(20) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(65) at db_putchar+0x126 db_force_whitespace sys/ddb/db_output.c:102 [inline] db_putchar(65) at db_putchar+0x126 sys/ddb/db_output.c:153 kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1 db_printf(ffffffff8346220f) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff83525b88) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff80003c3cfc10,98) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff80003c3cfc10) at kerntrap+0x19d sys/arch/amd64/amd64/trap.c:528 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff800033f8cd18,fffffc806c3d1290,ffff80003c3cfdd0) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691 end trace frame: 0xffff80003c3cfe40, count: 0 ddb{1}> trace x86_ipi_db(ffff80002999dff0) 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_1(3f8,5) at x86_bus_space_io_read_1+0x37 sys/arch/amd64/amd64/bus_space.c:670 comcnputc(800,20) at comcnputc+0xd0 comcn_read_reg sys/dev/ic/com.c:1671 [inline] comcnputc(800,20) at comcnputc+0xd0 sys/dev/ic/com.c:1264 cnputc(20) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(65) at db_putchar+0x126 db_force_whitespace sys/ddb/db_output.c:102 [inline] db_putchar(65) at db_putchar+0x126 sys/ddb/db_output.c:153 kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1 db_printf(ffffffff8346220f) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff83525b88) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff80003c3cfc10,98) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff80003c3cfc10) at kerntrap+0x19d sys/arch/amd64/amd64/trap.c:528 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff800033f8cd18,fffffc806c3d1290,ffff80003c3cfdd0) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691 sys_futimens(ffff800033f8cd18,ffff80003c3cff20,ffff80003c3cfe70) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2767 syscall(ffff80003c3cff20) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c3cff20) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe4e66ca0950, count: -17