*cpu0: uvm_fault(0xfffffd806c9edb90, 0x8, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xd6 end of kernel end trace frame: 0x7f7fffffac10, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002e4f7a40 rbx 0 rdx 0 rcx 0 rax 0x2a r8 0xffff80002e4f7970 r9 0 r10 0xde2022f37d96c155 r11 0x2ebe9c4314d36770 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff8110f4e6 proc_trampoline+0xd6 cs 0x8 rflags 0x246 rsp 0xffff80002e4f79c0 ss 0 proc_trampoline+0xd6: movl $0,%gs:0x540 ddb{1}> show proc PROC (syz-executor.2) pid=1378 stat=onproc flags process=10 proc=0 pri=82, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff800027e3ca88,0xffff800027e3c7f8 process=0xffff8000ffff8430 user=0xffff80002e4f2000, vmspace=0xfffffd806c9edd00 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 705 65311 66833 32767 2 0x10 syz-executor.6 *44471 1378 96935 32767 7 0x10 syz-executor.2 53252 166140 97223 32767 2 0x10 syz-executor.3 9869 2282 94985 32767 2 0x490 syz-executor.7 9869 158958 94985 32767 3 0x4000090 fsleep syz-executor.7 14535 245500 78573 32767 2 0x10 syz-executor.1 14535 499113 78573 32767 7 0x4000010 syz-executor.1 36111 217915 96049 32767 2 0x4081010 syz-executor.0 36111 116440 96049 32767 3 0x4003010 suspend syz-executor.0 78573 81455 92671 32767 2 0x490 syz-executor.1 92671 168056 32716 0 3 0x82 wait syz-executor.1 96935 116874 20196 32767 2 0x490 syz-executor.2 20196 91019 32716 0 3 0x82 wait syz-executor.2 36080 253302 90486 32767 2 0x10 syz-executor.5 90486 19228 32716 0 3 0x82 wait syz-executor.5 94985 149836 42680 32767 2 0x490 syz-executor.7 42680 173463 32716 0 3 0x82 wait syz-executor.7 96049 514469 21661 32767 2 0x490 syz-executor.0 21661 47054 32716 0 3 0x82 wait syz-executor.0 54701 213074 35873 32767 2 0x10 syz-executor.4 35873 112476 32716 0 3 0x82 wait syz-executor.4 75527 136665 0 0 3 0x14200 bored sosplice 66833 391088 49136 32767 3 0x90 nanoslp syz-executor.6 97223 174315 65006 32767 2 0x490 syz-executor.3 49136 338076 32716 0 3 0x82 wait syz-executor.6 65006 116894 32716 0 3 0x82 wait syz-executor.3 32716 97162 12768 0 3 0x82 thrsleep syz-fuzzer 32716 22014 12768 0 3 0x4000082 nanoslp syz-fuzzer 32716 270409 12768 0 3 0x4000082 wait syz-fuzzer 32716 409782 12768 0 3 0x4000082 wait syz-fuzzer 32716 46812 12768 0 3 0x4000082 thrsleep syz-fuzzer 32716 246291 12768 0 3 0x4000082 kqread syz-fuzzer 32716 380744 12768 0 3 0x4000082 thrsleep syz-fuzzer 32716 141006 12768 0 3 0x4000082 thrsleep syz-fuzzer 32716 57134 12768 0 3 0x4000082 thrsleep syz-fuzzer 32716 94644 12768 0 3 0x4000082 wait syz-fuzzer 32716 427778 12768 0 3 0x4000082 wait syz-fuzzer 32716 129481 12768 0 3 0x4000082 wait syz-fuzzer 32716 434930 12768 0 3 0x4000082 thrsleep syz-fuzzer 32716 54685 12768 0 3 0x4000082 wait syz-fuzzer 32716 267123 12768 0 3 0x4000082 wait syz-fuzzer 32716 312337 12768 0 3 0x4000082 wait syz-fuzzer 12768 12526 49734 0 3 0x10008a sigsusp ksh 49734 445600 18577 0 3 0x9a kqread sshd 46803 50549 1 0 3 0x100083 ttyin getty 18577 436831 1 0 3 0x88 kqread sshd 43616 26619 5782 73 3 0x1100090 kqread syslogd 5782 508524 1 0 3 0x100082 netio syslogd 91660 147869 1 0 3 0x100080 kqread resolvd 99567 109495 30658 77 3 0x100092 kqread dhcpleased 98613 485121 30658 77 3 0x100092 kqread dhcpleased 30658 161658 1 0 3 0x80 kqread dhcpleased 36786 350514 0 0 3 0x14200 bored smr 31934 376562 0 0 2 0x14200 zerothread 93479 145966 0 0 3 0x14200 aiodoned aiodoned 61453 61411 0 0 3 0x14200 syncer update 47156 455450 0 0 3 0x14200 cleaner cleaner 60812 147354 0 0 3 0x14200 reaper reaper 34398 185724 0 0 3 0x14200 pgdaemon pagedaemon 1397 345870 0 0 3 0x14200 bored viomb 4992 353758 0 0 3 0x40014200 acpi0 acpi0 60710 247055 0 0 3 0x40014200 idle1 76231 172719 0 0 3 0x14200 bored softnet 78737 487612 0 0 3 0x14200 bored softnet 92816 121258 0 0 3 0x14200 bored softnet 60550 407550 0 0 3 0x14200 bored softnet 5047 236427 0 0 3 0x14200 bored systqmp 18126 282058 0 0 3 0x14200 bored systq 65586 76577 0 0 2 0x40014200 softclock 11213 89663 0 0 3 0x40014200 idle0 1 105632 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex pvpl r = 0 (0xffffffff82a959a0) #0 witness_lock+0x44d #1 mtx_enter_try+0x100 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 pool_put+0x80 sys/kern/subr_pool.c:797 #4 pmap_enter+0xa5b sys/arch/amd64/amd64/pmap.c:2885 #5 uvm_fault_upper+0x2b1 sys/uvm/uvm_fault.c:1057 #6 uvm_fault+0x154 sys/uvm/uvm_fault.c:609 #7 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 #8 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:417 #9 recall_trap+0x8 Process 44471 (syz-executor.2) thread 0xffff800027e3dce8 (1378) exclusive rwlock amaplk r = 0 (0xfffffd806805fe88) #0 witness_lock+0x44d #1 uvm_fault_check+0x422 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 (0xfffffd806c9edd18) #0 witness_lock+0x44d #1 uvmfault_lookup+0xd9 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 pvpl r = 0 (0xffffffff82a959a0) #0 witness_lock+0x44d #1 mtx_enter_try+0x100 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 pool_put+0x80 sys/kern/subr_pool.c:797 #4 pmap_enter+0xa5b sys/arch/amd64/amd64/pmap.c:2885 #5 uvm_fault_upper+0x2b1 sys/uvm/uvm_fault.c:1057 #6 uvm_fault+0x154 sys/uvm/uvm_fault.c:609 #7 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 #8 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:417 #9 recall_trap+0x8 Process 14535 (syz-executor.1) thread 0xffff800027e3d268 (499113) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82bb0a40) #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 (0xfffffd807a3bd0a8) #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 36080 (syz-executor.5) thread 0xffff8000ffff22a8 (253302) exclusive rrwlock inode r = 0 (0xfffffd806eaf83d0) #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 (0xfffffd8065bd2b40) #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:412 #6 namei+0x36a sys/kern/vfs_lookup.c:244 #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 Process 54701 (syz-executor.4) thread 0xffff8000ffff5500 (213074) exclusive rrwlock inode r = 0 (0xfffffd806eaf5b48) #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 (0xfffffd806e5953d0) #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:412 #6 namei+0x36a sys/kern/vfs_lookup.c:244 #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 10216 6412K 6420K 78643K 11352 0 pcb 13 12K 14K 78643K 17 0 rtable 240 6K 7K 78643K 1405 0 ifaddr 82 17K 17K 78643K 191 0 sysctl 3 1K 1K 78643K 3 0 counters 56 35K 35K 78643K 86 0 ioctlops 0 0K 2K 78643K 91 0 iov 0 0K 24K 78643K 1802 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1272 80K 80K 78643K 3392 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 128 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 4578 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 24 89K 113K 78643K 10727 0 sigio 0 0K 0K 78643K 416 0 proc 56 78K 115K 78643K 1642 0 subproc 104 6K 6K 78643K 299 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 992 0 in_multi 99 6K 6K 78643K 429 0 ether_multi 1 0K 0K 78643K 62 0 mrt 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 205 917K 917K 78643K 205 0 exec 0 0K 1K 78643K 2069 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 396 94K 111K 78643K 78334 0 UVM aobj 131 8K 8K 78643K 138 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 465 0 NDP 11 0K 2K 78643K 72 0 temp 124 4734K 4862K 78643K 29744 0 kqueue 12 18K 30K 78643K 1081 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 120 945 0 942 13 12 1 3 0 8 0 rtentry 112 294 0 181 4 0 4 4 0 8 0 unpcb 144 8734 0 8721 87 82 5 10 0 8 4 syncache 296 86 0 86 19 19 0 1 0 8 0 tcpqe 32 546 0 546 12 12 0 1 0 8 0 tcpcb 768 12338 0 12247 278 268 10 20 0 8 0 arp 120 49 0 31 1 0 1 1 0 8 0 ipq 40 7 0 7 3 3 0 1 0 8 0 ipqe 40 18 0 18 3 3 0 1 0 8 0 inpcb 368 17852 0 17845 213 203 10 19 0 8 9 nd6 48 86 0 59 1 0 1 1 0 8 0 kcovpl 48 23 0 15 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1233 0 772 33 4 29 30 0 8 0 art_table 32 1234 0 772 4 0 4 4 0 8 0 art_node 16 293 0 190 1 0 1 1 0 8 0 sysvmsgpl 40 23 0 14 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 4576 0 4566 1 0 1 1 0 8 0 shmpl 112 135 0 7 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 15959 0 14494 92 0 92 92 0 8 0 ffsino 272 15959 0 14494 98 0 98 98 0 8 0 nchpl 144 30208 0 28572 63 0 63 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 101562 0 101559 6 5 1 2 0 8 0 percpumem 16 55 0 15 1 0 1 1 0 8 0 kstatmem 264 52 0 30 2 0 2 2 0 8 0 scxspl 216 96367 0 96367 62 61 1 8 0 8 1 plimitpl 152 2535 0 2512 28 26 2 2 0 8 1 sigapl 424 10987 0 10934 7 0 7 7 0 8 0 futexpl 64 104247 0 104246 5 4 1 1 0 8 0 knotepl 120 1171 0 0 17 1 16 17 0 8 0 kqueuepl 216 3162 0 3154 56 55 1 8 0 8 0 pipepl 320 2398 0 2370 61 58 3 8 0 8 0 fdescpl 496 10969 0 10934 7 1 6 6 0 8 0 filepl 152 78193 0 77960 151 134 17 21 0 8 7 lockfpl 104 2904 0 2902 3 2 1 2 0 8 0 lockfspl 48 530 0 528 1 0 1 1 0 8 0 sessionpl 144 38 0 22 1 0 1 1 0 8 0 pgrppl 48 208 0 192 1 0 1 1 0 8 0 ucredpl 104 13353 0 13335 1 0 1 1 0 8 0 zombiepl 144 10935 0 10934 1 0 1 1 0 8 0 processpl 1064 10987 0 10934 4 0 4 4 0 8 0 procpl 672 33437 0 33365 30 22 8 9 0 8 1 sosppl 168 179 0 179 22 21 1 1 0 8 1 sockpl 488 28000 0 27977 550 534 16 37 0 8 13 mcl64k 65536 33 0 0 3 0 3 3 0 8 0 mcl16k 16384 29 0 0 3 0 3 3 0 8 0 mcl12k 12288 25 0 0 2 0 2 2 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 25 0 0 4 1 3 3 0 8 0 mcl4k 4096 66 0 0 7 3 4 5 0 8 0 mcl2k2 2112 13 0 0 1 0 1 1 0 8 0 mcl2k 2048 363 0 0 29 7 22 29 0 8 0 mtagpl 96 5 0 0 1 0 1 1 0 8 0 mbufpl 256 7798 0 0 463 0 463 463 0 8 0 bufpl 288 23543 0 17211 453 0 453 453 0 8 0 anonpl 24 2354300 0 2340730 332 230 102 137 0 186 0 amapchunkpl 152 223774 0 223031 161 128 33 46 0 158 0 amappl16 200 29770 0 29436 243 223 20 37 0 8 1 amappl15 192 4 0 4 2 2 0 1 0 8 0 amappl14 184 179 0 166 1 0 1 1 0 8 0 amappl13 176 6 0 6 2 2 0 1 0 8 0 amappl12 168 580 0 575 1 0 1 1 0 8 0 amappl11 160 43 0 33 1 0 1 1 0 8 0 amappl10 152 58 0 46 1 0 1 1 0 8 0 amappl9 144 1133 0 1131 1 0 1 1 0 8 0 amappl8 136 806 0 645 6 0 6 6 0 8 0 amappl7 128 132 0 115 1 0 1 1 0 8 0 amappl6 120 562 0 542 2 1 1 2 0 8 0 amappl5 112 359 0 350 1 0 1 1 0 8 0 amappl4 104 1269 0 1236 2 0 2 2 0 8 0 amappl3 96 33820 0 33766 2 0 2 2 0 8 0 amappl2 88 11929 0 11846 3 1 2 3 0 8 0 amappl1 80 254459 0 253726 35 18 17 21 0 8 0 amappl 88 77317 0 77096 6 0 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 72 137 0 7 3 0 3 3 0 8 0 uaddrrnd 24 10969 0 10934 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 10969 0 10934 1 0 1 1 0 8 0 vmmpekpl 168 97550 0 97499 3 0 3 3 0 8 0 vmmpepl 168 1026732 0 1023934 281 146 135 145 0 357 1 vmsppl 368 10968 0 10934 4 0 4 4 0 8 0 rwobjpl 56 288210 0 280629 116 4 112 112 0 8 0 pdppl 4096 21945 0 21868 389 308 81 89 0 8 4 pvpl 32 4379312 0 4359363 608 416 192 270 0 265 13 pmappl 248 10968 0 10934 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1804 0 533 37 0 37 37 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff829beff0) 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_1(3f8,5) at x86_bus_space_io_read_1+0x28 sys/arch/amd64/amd64/bus_space.c:651 comcnputc(800,3e) at comcnputc+0x1a7 sys/dev/ic/com.c:1269 cnputc(3e) at cnputc+0x4b sys/dev/cons.c:218 db_putchar(3e) at db_putchar+0x3fc sys/ddb/db_output.c:155 kprintf() at kprintf+0x20ec sys/kern/subr_prf.c:1064 db_printf(ffffffff8265b461) at db_printf+0x85 sys/kern/subr_prf.c:498 fault(ffffffff8260d140) at fault+0x95 sys/arch/amd64/amd64/trap.c:154 kpageflttrap(ffff80002e4af4c0,8) at kpageflttrap+0x2b7 sys/arch/amd64/amd64/trap.c:289 kerntrap(ffff80002e4af4c0) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b fifo_write(ffff80002e4af5c0) at fifo_write+0x4e sys/miscfs/fifofs/fifo_vnops.c:271 end trace frame: 0xffff80002e4af630, count: 0 ddb{0}> trace x86_ipi_db(ffffffff829beff0) 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_1(3f8,5) at x86_bus_space_io_read_1+0x28 sys/arch/amd64/amd64/bus_space.c:651 comcnputc(800,3e) at comcnputc+0x1a7 sys/dev/ic/com.c:1269 cnputc(3e) at cnputc+0x4b sys/dev/cons.c:218 db_putchar(3e) at db_putchar+0x3fc sys/ddb/db_output.c:155 kprintf() at kprintf+0x20ec sys/kern/subr_prf.c:1064 db_printf(ffffffff8265b461) at db_printf+0x85 sys/kern/subr_prf.c:498 fault(ffffffff8260d140) at fault+0x95 sys/arch/amd64/amd64/trap.c:154 kpageflttrap(ffff80002e4af4c0,8) at kpageflttrap+0x2b7 sys/arch/amd64/amd64/trap.c:289 kerntrap(ffff80002e4af4c0) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b fifo_write(ffff80002e4af5c0) at fifo_write+0x4e sys/miscfs/fifofs/fifo_vnops.c:271 VOP_WRITE(fffffd80736fb490,ffff80002e4af658,8,fffffd807f7d72d8) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 vn_rdwr(1,fffffd80736fb490,ffff800021258800,ff,0,1,8167622ee4be01c5,ffff80002e4af780,fffffd80736fb490,78) at vn_rdwr+0xe9 sys/kern/vfs_vnops.c:324 ufs_symlink(ffff80002e4af780) at ufs_symlink+0x142 sys/ufs/ufs/ufs_vnops.c:1386 VOP_SYMLINK(fffffd8067d7ae68,ffff80002e4af900,ffff80002e4af930,ffff80002e4af830,ffff800021258800) at VOP_SYMLINK+0xd0 sys/kern/vfs_vops.c:426 dosymlinkat(ffff800027e3d268,20002dc0,ffffff9c,20002ec0) at dosymlinkat+0x154 sys/kern/vfs_syscalls.c:1802 syscall(ffff80002e4afab0) at syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002e4afab0) at syscall+0x438 sys/arch/amd64/amd64/trap.c:599 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x67237dd5230, count: -21 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: 0x7f7fffffac10, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xd6 end of kernel end trace frame: 0x7f7fffffac10, count: -1