*cpu0: uvm_fault(0xfffffd80685968b8, 0x8, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xd6 end of kernel end trace frame: 0x7f7ffffef640, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff8000283b40a0 rbx 0 rdx 0 rcx 0 rax 0x2a r8 0xffff8000283b3fd0 r9 0 r10 0xa475abdae8937af7 r11 0x71701830c33ec5db r12 0 r13 0 r14 0 r15 0 rip 0xffffffff816a84e6 proc_trampoline+0xd6 cs 0x8 rflags 0x246 rsp 0xffff8000283b4020 ss 0 proc_trampoline+0xd6: movl $0,%gs:0x540 ddb{1}> show proc PROC (syz-executor.2) pid=131600 stat=onproc flags process=10 proc=0 pri=65, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000212b8030,0xffff8000ffff45b8 process=0xffff800021229d60 user=0xffff8000283af000, vmspace=0xfffffd8070be85d0 estcpu=36, cpticks=2, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 63714 329726 30050 32767 2 0x10 syz-executor.1 *12673 131600 32892 32767 7 0x10 syz-executor.2 33985 5285 59771 32767 3 0x90 nanoslp syz-executor.0 33985 98811 59771 32767 3 0x4000090 fsleep syz-executor.0 33985 512324 59771 32767 3 0x4000090 fsleep syz-executor.0 67497 131316 41267 32767 2 0x10 syz-executor.6 67497 280324 41267 32767 3 0x4000090 netio syz-executor.6 39320 501648 50488 32767 2 0x10 syz-executor.5 39320 488430 50488 32767 7 0x4000010 syz-executor.5 60000 126458 0 0 3 0x14200 bored sosplice 41267 235086 63011 32767 2 0x490 syz-executor.6 64261 515746 78271 32767 2 0x490 syz-executor.7 78271 431398 18292 0 3 0x82 wait syz-executor.7 50488 131377 86255 32767 3 0x90 nanoslp syz-executor.5 57822 295501 77216 32767 2 0x10 syz-executor.4 63011 472689 18292 0 3 0x82 wait syz-executor.6 86255 289286 18292 0 3 0x82 wait syz-executor.5 1982 150782 39222 32767 2 0x10 syz-executor.3 77216 26383 18292 0 3 0x82 wait syz-executor.4 32892 488801 69189 32767 2 0x490 syz-executor.2 39222 48452 18292 0 3 0x82 wait syz-executor.3 59771 192638 15355 32767 3 0x90 nanoslp syz-executor.0 30050 53476 35520 32767 3 0x90 nanoslp syz-executor.1 69189 333807 18292 0 3 0x82 wait syz-executor.2 35520 135213 18292 0 3 0x82 wait syz-executor.1 15355 441456 18292 0 3 0x82 wait syz-executor.0 18292 13156 87782 0 3 0x82 thrsleep syz-fuzzer 18292 341094 87782 0 3 0x4000082 nanoslp syz-fuzzer 18292 72613 87782 0 3 0x4000082 wait syz-fuzzer 18292 203521 87782 0 3 0x4000082 thrsleep syz-fuzzer 18292 249803 87782 0 3 0x4000082 wait syz-fuzzer 18292 503060 87782 0 3 0x4000082 wait syz-fuzzer 18292 55521 87782 0 3 0x4000082 wait syz-fuzzer 18292 393957 87782 0 3 0x4000082 wait syz-fuzzer 18292 387384 87782 0 3 0x4000082 thrsleep syz-fuzzer 18292 201510 87782 0 3 0x4000082 wait syz-fuzzer 18292 38212 87782 0 3 0x4000082 wait syz-fuzzer 18292 175893 87782 0 3 0x4000082 thrsleep syz-fuzzer 18292 456745 87782 0 3 0x4000082 kqread syz-fuzzer 18292 377373 87782 0 3 0x4000082 wait syz-fuzzer 18292 406358 87782 0 3 0x4000082 thrsleep syz-fuzzer 87782 377745 1609 0 3 0x10008a sigsusp ksh 1609 433127 31265 0 3 0x9a kqread sshd 69158 140547 1 0 3 0x100083 ttyin getty 31265 453358 1 0 3 0x88 kqread sshd 16387 88923 68968 73 3 0x1100090 kqread syslogd 68968 403293 1 0 3 0x100082 netio syslogd 35497 49911 1 0 3 0x100080 kqread resolvd 45617 498447 51529 77 3 0x100092 kqread dhcpleased 32436 463113 51529 77 3 0x100092 kqread dhcpleased 51529 421051 1 0 3 0x80 kqread dhcpleased 40540 417716 0 0 3 0x14200 bored smr 43315 215317 0 0 2 0x14200 zerothread 62247 314204 0 0 3 0x14200 aiodoned aiodoned 1369 58985 0 0 3 0x14200 syncer update 8040 453189 0 0 3 0x14200 cleaner cleaner 36495 490721 0 0 3 0x14200 reaper reaper 19694 7949 0 0 3 0x14200 pgdaemon pagedaemon 82675 41076 0 0 3 0x14200 bored viomb 55007 223618 0 0 3 0x40014200 acpi0 acpi0 90163 521605 0 0 3 0x40014200 idle1 26839 396769 0 0 3 0x14200 bored softnet 98762 195606 0 0 3 0x14200 bored softnet 85384 139756 0 0 3 0x14200 bored softnet 29141 193620 0 0 3 0x14200 bored softnet 38960 6435 0 0 3 0x14200 bored systqmp 27178 306419 0 0 3 0x14200 bored systq 99581 421059 0 0 3 0x40014200 bored softclock 45236 415270 0 0 3 0x40014200 idle0 1 467682 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 (0xfffffd80671602f8) #0 witness_lock+0x44d #1 mtx_enter_try+0x100 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 pmap_enter+0x1bf pmap_map_ptes sys/arch/amd64/amd64/pmap.c:420 [inline] #3 pmap_enter+0x1bf sys/arch/amd64/amd64/pmap.c:2699 #4 uvm_fault_lower+0x77c sys/uvm/uvm_fault.c:1506 #5 uvm_fault+0x238 #6 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 #7 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:417 #8 recall_trap+0x8 Process 12673 (syz-executor.2) thread 0xffff8000212b9b60 (131600) exclusive rwlock amaplk r = 0 (0xfffffd80679037c0) #0 witness_lock+0x44d #1 uvm_fault_check+0x419 sys/uvm/uvm_fault.c:783 #2 uvm_fault+0xf2 sys/uvm/uvm_fault.c:601 #3 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 #4 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:417 #5 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd8070be8678) #0 witness_lock+0x44d #1 uvmfault_lookup+0xc9 sys/uvm/uvm_fault.c:1773 #2 uvm_fault_check+0x3a sys/uvm/uvm_fault.c:673 #3 uvm_fault+0xf2 sys/uvm/uvm_fault.c:601 #4 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 #5 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:417 #6 recall_trap+0x8 exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd80671602f8) #0 witness_lock+0x44d #1 mtx_enter_try+0x100 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 pmap_enter+0x1bf pmap_map_ptes sys/arch/amd64/amd64/pmap.c:420 [inline] #3 pmap_enter+0x1bf sys/arch/amd64/amd64/pmap.c:2699 #4 uvm_fault_lower+0x77c sys/uvm/uvm_fault.c:1506 #5 uvm_fault+0x238 #6 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 #7 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:417 #8 recall_trap+0x8 Process 39320 (syz-executor.5) thread 0xffff8000212b8030 (488430) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82c029a0) #0 witness_lock+0x44d #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x3bb sys/kern/sched_bsd.c:415 #3 sleep_finish+0x180 sys/kern/kern_synch.c:417 #4 tsleep+0x12c sys/kern/kern_synch.c:155 #5 biowait+0x91 sys/kern/vfs_bio.c:1268 #6 bwrite+0x21b sys/kern/vfs_bio.c:769 #7 VOP_BWRITE+0x4a sys/kern/vfs_vops.c:640 #8 ufs_direnter+0x8fa sys/ufs/ufs/ufs_lookup.c:909 #9 ufs_makeinode+0x4cc sys/ufs/ufs/ufs_vnops.c:1856 #10 ufs_symlink+0x47 sys/ufs/ufs/ufs_vnops.c:1370 #11 VOP_SYMLINK+0xd0 sys/kern/vfs_vops.c:426 #12 dosymlinkat+0x154 sys/kern/vfs_syscalls.c:1802 #13 syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] #13 syscall+0x438 sys/arch/amd64/amd64/trap.c:599 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8076b701b8) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vget+0x1fc sys/kern/vfs_subr.c:676 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1324 #8 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394 #9 ufs_makeinode+0xae sys/ufs/ufs/ufs_vnops.c:1818 #10 ufs_symlink+0x47 sys/ufs/ufs/ufs_vnops.c:1370 #11 VOP_SYMLINK+0xd0 sys/kern/vfs_vops.c:426 #12 dosymlinkat+0x154 sys/kern/vfs_syscalls.c:1802 #13 syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] #13 syscall+0x438 sys/arch/amd64/amd64/trap.c:599 #14 Xsyscall+0x128 Process 57822 (syz-executor.4) thread 0xffff8000212b8dc8 (295501) exclusive rrwlock inode r = 0 (0xfffffd8076b702c8) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vget+0x1fc sys/kern/vfs_subr.c:676 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1324 #8 ufs_lookup+0x13ba sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:566 #11 namei+0x55a sys/kern/vfs_lookup.c:250 #12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1848 #13 syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] #13 syscall+0x438 sys/arch/amd64/amd64/trap.c:599 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8063ffcf80) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:418 #6 namei+0x55a sys/kern/vfs_lookup.c:250 #7 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1848 #8 syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] #8 syscall+0x438 sys/arch/amd64/amd64/trap.c:599 #9 Xsyscall+0x128 Process 1982 (syz-executor.3) thread 0xffff8000212275e0 (150782) exclusive rrwlock inode r = 0 (0xfffffd8076b70f88) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:518 #4 ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1353 #6 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394 #7 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1150 #8 VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388 #9 domkdirat+0x121 sys/kern/vfs_syscalls.c:3112 #10 syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] #10 syscall+0x438 sys/arch/amd64/amd64/trap.c:599 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806bd436f8) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:418 #6 namei+0x55a sys/kern/vfs_lookup.c:250 #7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3097 #8 syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] #8 syscall+0x438 sys/arch/amd64/amd64/trap.c:599 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10202 6410K 6421K 78643K 11292 0 pcb 13 8K 8K 78643K 13 0 rtable 234 6K 7K 78643K 407 0 ifaddr 73 24K 24K 78643K 75 0 counters 60 35K 35K 78643K 60 0 ioctlops 0 0K 2K 78643K 27 0 iov 0 0K 28K 78643K 220 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1272 80K 80K 78643K 1669 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 9 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 300 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 23 85K 113K 78643K 997 0 sigio 0 0K 0K 78643K 2 0 proc 56 78K 115K 78643K 512 0 subproc 104 6K 6K 78643K 104 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 1 0K 0K 78643K 405 0 in_multi 101 6K 6K 78643K 106 0 ether_multi 2 0K 0K 78643K 3 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 85 387K 387K 78643K 85 0 exec 0 0K 1K 78643K 496 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 8 62K 64K 78643K 10 0 UVM amap 309 84K 89K 78643K 8855 0 UVM aobj 16 2K 2K 78643K 16 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 2 0K 0K 78643K 29 0 NDP 11 0K 2K 78643K 27 0 temp 123 5770K 5834K 78643K 6159 0 kqueue 12 18K 24K 78643K 128 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 118 0 115 2 1 1 2 0 8 0 rtentry 112 111 0 1 4 0 4 4 0 8 0 unpcb 144 883 0 870 14 12 2 6 0 8 1 syncache 296 8 0 8 3 3 0 1 0 8 0 tcpqe 32 332 0 332 4 4 0 2 0 8 0 tcpcb 776 579 0 572 25 24 1 8 0 8 0 arp 120 18 0 0 1 0 1 1 0 8 0 inpcb 368 1545 0 1533 31 28 3 8 0 8 1 nd6 48 24 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 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 32 454 0 0 4 0 4 4 0 8 0 art_node 16 110 0 10 1 0 1 1 0 8 0 sysvmsgpl 40 38 0 38 1 1 0 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 298 0 288 1 0 1 1 0 8 0 shmpl 112 13 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2902 0 1467 90 0 90 90 0 8 0 ffsino 272 2902 0 1467 96 0 96 96 0 8 0 nchpl 144 4341 0 2674 63 0 63 63 0 8 0 uvmvnodes 80 3015 0 0 62 0 62 62 0 8 0 vnodes 216 3015 0 0 168 0 168 168 0 8 0 namei 1024 15598 0 15596 3 2 1 2 0 8 0 percpumem 16 43 0 0 1 0 1 1 0 8 0 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 13171 0 13171 12 11 1 8 0 8 1 plimitpl 152 226 0 203 4 3 1 2 0 8 0 sigapl 424 1287 0 1234 7 0 7 7 0 8 0 futexpl 64 8185 0 8183 2 1 1 1 0 8 0 knotepl 120 109 0 0 4 0 4 4 0 8 0 kqueuepl 216 437 0 429 12 11 1 8 0 8 0 pipepl 320 490 0 462 16 13 3 8 0 8 0 fdescpl 496 1269 0 1235 7 2 5 6 0 8 0 filepl 152 9938 0 9700 37 25 12 20 0 8 2 lockfpl 104 145 0 143 1 0 1 1 0 8 0 lockfspl 48 49 0 47 1 0 1 1 0 8 0 sessionpl 144 23 0 7 1 0 1 1 0 8 0 pgrppl 48 25 0 9 1 0 1 1 0 8 0 ucredpl 104 2049 0 2031 1 0 1 1 0 8 0 zombiepl 144 1235 0 1234 1 0 1 1 0 8 0 processpl 1072 1287 0 1234 4 0 4 4 0 8 0 procpl 696 3202 0 3131 11 3 8 9 0 8 1 sosppl 168 21 0 21 4 4 0 1 0 8 0 sockpl 488 2566 0 2538 62 52 10 24 0 8 6 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 8 0 0 1 0 1 1 0 8 0 mcl12k 12288 6 0 0 1 0 1 1 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 8 0 0 1 0 1 1 0 8 0 mcl4k 4096 12 0 0 2 0 2 2 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 309 0 0 38 0 38 38 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 1088 0 0 65 0 65 65 0 8 0 bufpl 288 5409 0 134 377 0 377 377 0 8 0 anonpl 24 292134 0 279193 106 11 95 102 0 186 9 amapchunkpl 152 24519 0 23799 39 8 31 33 0 158 1 amappl16 200 3696 0 3386 29 11 18 29 0 8 1 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 133 0 123 1 0 1 1 0 8 0 amappl13 176 7 0 7 1 1 0 1 0 8 0 amappl12 168 415 0 410 1 0 1 1 0 8 0 amappl11 160 46 0 36 1 0 1 1 0 8 0 amappl10 152 41 0 29 1 0 1 1 0 8 0 amappl9 144 957 0 957 3 3 0 1 0 8 0 amappl8 136 177 0 122 2 0 2 2 0 8 0 amappl7 128 147 0 122 2 0 2 2 0 8 0 amappl6 120 157 0 143 2 1 1 2 0 8 0 amappl5 112 131 0 125 1 0 1 1 0 8 0 amappl4 104 467 0 437 3 2 1 3 0 8 0 amappl3 96 3348 0 3291 2 0 2 2 0 8 0 amappl2 88 1632 0 1558 3 1 2 3 0 8 0 amappl1 80 31226 0 30484 22 4 18 22 0 8 0 amappl 88 8346 0 8150 7 1 6 6 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 15 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1269 0 1235 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1269 0 1235 1 0 1 1 0 8 0 vmmpekpl 168 16101 0 16045 3 0 3 3 0 8 0 vmmpepl 168 123212 0 120535 149 22 127 132 0 357 1 vmsppl 368 1268 0 1235 4 0 4 4 0 8 0 rwobjpl 56 38096 0 33664 63 0 63 63 0 8 0 pdppl 4096 2545 0 2470 155 74 81 89 0 8 6 pvpl 32 613492 0 594617 275 101 174 271 0 265 13 pmappl 248 1268 0 1235 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 900 0 106 23 0 23 23 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff82b5fff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 x86_bus_space_io_read_4(b008,0) at x86_bus_space_io_read_4+0x28 sys/arch/amd64/amd64/bus_space.c:666 acpitimer_delay(1) at acpitimer_delay+0x8e acpitimer_read sys/dev/acpi/acpitimer.c:147 [inline] acpitimer_delay(1) at acpitimer_delay+0x8e sys/dev/acpi/acpitimer.c:121 comcnputc(800,a) at comcnputc+0x1d7 sys/dev/ic/com.c:1269 cnputc(a) at cnputc+0x4b sys/dev/cons.c:218 db_putchar(a) at db_putchar+0x4bd sys/ddb/db_output.c:168 kprintf() at kprintf+0x6ac sys/kern/subr_prf.c:724 db_printf(ffffffff82808abd) at db_printf+0x85 sys/kern/subr_prf.c:498 fault(ffffffff827b513a) at fault+0x95 sys/arch/amd64/amd64/trap.c:154 kpageflttrap(ffff800024720770,8) at kpageflttrap+0x2b7 sys/arch/amd64/amd64/trap.c:289 kerntrap(ffff800024720770) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b end trace frame: 0xffff800024720860, count: 0 ddb{0}> trace x86_ipi_db(ffffffff82b5fff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 x86_bus_space_io_read_4(b008,0) at x86_bus_space_io_read_4+0x28 sys/arch/amd64/amd64/bus_space.c:666 acpitimer_delay(1) at acpitimer_delay+0x8e acpitimer_read sys/dev/acpi/acpitimer.c:147 [inline] acpitimer_delay(1) at acpitimer_delay+0x8e sys/dev/acpi/acpitimer.c:121 comcnputc(800,a) at comcnputc+0x1d7 sys/dev/ic/com.c:1269 cnputc(a) at cnputc+0x4b sys/dev/cons.c:218 db_putchar(a) at db_putchar+0x4bd sys/ddb/db_output.c:168 kprintf() at kprintf+0x6ac sys/kern/subr_prf.c:724 db_printf(ffffffff82808abd) at db_printf+0x85 sys/kern/subr_prf.c:498 fault(ffffffff827b513a) at fault+0x95 sys/arch/amd64/amd64/trap.c:154 kpageflttrap(ffff800024720770,8) at kpageflttrap+0x2b7 sys/arch/amd64/amd64/trap.c:289 kerntrap(ffff800024720770) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b fifo_write(ffff800024720870) at fifo_write+0x4e sys/miscfs/fifofs/fifo_vnops.c:271 VOP_WRITE(fffffd80779ec568,ffff800024720908,8,fffffd807f7d7068) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 vn_rdwr(1,fffffd80779ec568,ffff8000211e9800,fd,0,1,38d7e2d3c26eb909,ffff800024720a30,fffffd80779ec568,78) at vn_rdwr+0xe9 sys/kern/vfs_vnops.c:324 ufs_symlink(ffff800024720a30) at ufs_symlink+0x142 sys/ufs/ufs/ufs_vnops.c:1386 VOP_SYMLINK(fffffd8075e73560,ffff800024720bb0,ffff800024720be0,ffff800024720ae0,ffff8000211e9800) at VOP_SYMLINK+0xd0 sys/kern/vfs_vops.c:426 dosymlinkat(ffff8000212b8030,20000100,ffffff9c,20000300) at dosymlinkat+0x154 sys/kern/vfs_syscalls.c:1802 syscall(ffff800024720d60) at syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff800024720d60) at syscall+0x438 sys/arch/amd64/amd64/trap.c:599 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9156b933ca0, count: -22 ddb{0}> machine ddbcpu 1 Stopped at proc_trampoline+0xd6: movl $0,%gs:0x540 proc_trampoline() at proc_trampoline+0xd6 end of kernel end trace frame: 0x7f7ffffef640, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xd6 end of kernel end trace frame: 0x7f7ffffef640, count: -1