*cpu0: uvm_fault(0xfffffd806c2281c0, 0x8, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7e684e79ad80, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002a090b50 rbx 0 rdx 0 rcx 0xffff8000367c31f0 rax 0x2a r8 0xffff80002a090a80 r9 0x7e684e79a001 r10 0xf21c122451a961c9 r11 0x773675507f83bcd5 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff81e404c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80002a090ad0 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x680 ddb{1}> show proc PROC (syz-executor) tid=286286 pid=87962 tcnt=1 stat=onproc flags process=10 proc=0 runpri=17, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000367c2548,0xffff8000367cf700 process=0xffff8000372196b8 user=0xffff80002a08b000, vmspace=0xfffffd806c237dd8 estcpu=36, cpticks=1, pctcpu=0.2, user=0, sys=4, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 61738 278541 87962 32767 2 0x10 syz-executor 81071 122004 73192 32767 2 0x10 syz-executor 2120 213453 91374 32767 2 0x10 syz-executor 2120 205736 91374 32767 7 0x4000010 syz-executor 23226 78334 20127 32767 2 0x10 syz-executor 23226 209999 20127 32767 3 0x4000090 netcon syz-executor 141 421226 18131 32767 2 0x490 syz-executor 141 115105 18131 32767 3 0x4000090 pipewr syz-executor 141 477495 18131 32767 3 0x4000090 pipewr syz-executor 141 142347 18131 32767 3 0x4000090 fsleep syz-executor 5625 371185 38262 32767 2 0x10 syz-executor 38262 382619 82176 0 3 0x82 wait syz-executor 18131 455421 75416 32767 3 0x90 nanoslp syz-executor 20127 67105 66521 32767 3 0x90 nanoslp syz-executor 58579 32046 16679 32767 2 0x10 syz-executor 91374 121379 3974 32767 2 0x490 syz-executor 73192 420666 36726 32767 3 0x90 nanoslp syz-executor *87962 286286 65440 32767 7 0x10 syz-executor 66521 243886 82176 0 3 0x82 wait syz-executor 65440 13218 82176 0 3 0x82 wait syz-executor 3974 412932 82176 0 3 0x82 wait syz-executor 36726 171327 82176 0 3 0x82 wait syz-executor 75416 100144 82176 0 3 0x82 wait syz-executor 16679 213279 82176 0 3 0x82 wait syz-executor 5142 318851 36550 0 3 0x100082 sbwait ndp 36550 284195 97 0 3 0x10008a sigsusp sh 97 250958 29135 0 3 0x80 wait syz-executor 29135 484981 82176 0 3 0x82 wait syz-executor 27715 27704 0 0 3 0x14200 bored sosplice 82176 442475 49281 0 2 0x2 syz-executor 49281 517896 32921 0 3 0x10008a sigsusp ksh 32921 381096 89813 0 3 0x98 kqread sshd-session 89813 416239 82791 0 3 0x92 kqread sshd-session 15428 322954 1 0 3 0x100083 ttyin getty 82791 495154 1 0 3 0x88 kqread sshd 57325 34022 22148 73 3 0x1100090 kqread syslogd 22148 93964 1 0 3 0x100082 sbwait syslogd 62153 367634 1 0 3 0x100080 kqread resolvd 52846 259231 89706 77 3 0x100092 kqread dhcpleased 1385 482531 89706 77 3 0x100092 kqread dhcpleased 89706 173220 1 0 3 0x80 kqread dhcpleased 64190 321584 0 0 3 0x14200 bored smr 39362 475534 0 0 2 0x14200 zerothread 59910 316718 0 0 3 0x14200 aiodoned aiodoned 77803 287255 0 0 3 0x14200 syncer update 58723 511213 0 0 3 0x14200 cleaner cleaner 78336 371625 0 0 3 0x14200 reaper reaper 2617 438312 0 0 3 0x14200 pgdaemon pagedaemon 30769 199755 0 0 3 0x14200 bored viomb 16072 338748 0 0 3 0x40014200 acpi0 acpi0 13322 135186 0 0 3 0x40014200 idle1 20229 482146 0 0 3 0x14200 bored softnet3 15917 296828 0 0 3 0x14200 bored softnet2 31508 61246 0 0 3 0x14200 bored softnet1 76685 304721 0 0 3 0x14200 bored softnet0 34630 484583 0 0 3 0x14200 bored systqmp 10231 424663 0 0 3 0x14200 bored systq 25097 103671 0 0 3 0x14200 tmoslp softclockmp 88910 146140 0 0 3 0x40014200 tmoslp softclock 21051 360784 0 0 3 0x40014200 idle0 1 432530 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 (0xfffffd806c6ff308) #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 2120 (syz-executor) thread 0xffff80002a159470 (205736) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff835678f8) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 __mp_acquire_count+0x58 #2 mi_switch+0x658 sys/kern/sched_bsd.c:460 #3 sleep_finish+0x219 sys/kern/kern_synch.c:416 #4 biowait+0xc1 sys/kern/vfs_bio.c:1254 #5 bwrite+0x2e2 sys/kern/vfs_bio.c:766 #6 VOP_BWRITE+0x60 sys/kern/vfs_vops.c:646 #7 ufs_direnter+0x7d1 sys/ufs/ufs/ufs_lookup.c:833 #8 ufs_makeinode+0x51e sys/ufs/ufs/ufs_vnops.c:1764 #9 ufs_symlink+0x54 sys/ufs/ufs/ufs_vnops.c:1293 #10 VOP_SYMLINK+0x11a sys/kern/vfs_vops.c:432 #11 dosymlinkat+0x1dd sys/kern/vfs_syscalls.c:1806 #12 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #12 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #13 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806e1861b8) #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 ufs_ihashget+0x171 sys/ufs/ufs/ufs_ihash.c:95 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201 #8 ffs_inode_alloc+0x283 sys/ufs/ffs/ffs_alloc.c:393 #9 ufs_makeinode+0xcb sys/ufs/ufs/ufs_vnops.c:1728 #10 ufs_symlink+0x54 sys/ufs/ufs/ufs_vnops.c:1293 #11 VOP_SYMLINK+0x11a sys/kern/vfs_vops.c:432 #12 dosymlinkat+0x1dd sys/kern/vfs_syscalls.c:1806 #13 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #13 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 Process 5625 (syz-executor) thread 0xffff80002a158540 (371185) exclusive rrwlock inode r = 0 (0xfffffd8061578f78) #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 ufs_ihashget+0x171 sys/ufs/ufs/ufs_ihash.c:95 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201 #8 ufs_lookup+0x19f8 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #11 namei+0x7aa sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852 #13 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #13 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80615782b8) #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 cache_lookup+0x36e sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x218 sys/ufs/ufs/ufs_lookup.c:160 #8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #10 namei+0x7aa sys/kern/vfs_lookup.c:250 #11 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852 #12 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #12 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #13 Xsyscall+0x128 Process 87962 (syz-executor) thread 0xffff8000367c31f0 (286286) exclusive rwlock amaplk r = 0 (0xfffffd8074d9bbe0) #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 (0xfffffd806c237ec8) #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 (0xfffffd806c6ff308) #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 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10211 10028K 10036K 166960K 11515 0 pcb 17 14K 16K 166960K 19 0 rtable 232 6K 7K 166960K 2615 0 pf 31 16K 16K 166960K 185 0 ifaddr 42 8K 8K 166960K 347 0 ifgroup 50 2K 2K 166960K 354 0 sysctl 4 1K 1K 166960K 4 0 counters 64 36K 36K 166960K 214 0 ioctlops 0 0K 2K 166960K 118 0 iov 0 0K 16K 166960K 207 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1468 92K 92K 166960K 2826 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 26 0 VM map 2 1K 1K 166960K 2 0 sem 11 1K 1K 166960K 11 0 dirhash 15 2K 3K 166960K 45 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 25 93K 157K 166960K 2367 0 sigio 0 0K 0K 166960K 17 0 proc 56 78K 176K 166960K 2657 0 subproc 104 6K 13K 166960K 1352 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 278 0 in_multi 99 7K 7K 166960K 985 0 ether_multi 1 0K 0K 166960K 13 0 mrt 1 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 217 970K 970K 166960K 217 0 exec 0 0K 1K 166960K 1525 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 235 74K 133K 166960K 18203 0 UVM aobj 131 4K 4K 166960K 132 0 pinsyscall 47 94K 126K 166960K 5294 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 0K 166960K 91 0 NDP 11 0K 2K 166960K 249 0 temp 74 6824K 6889K 166960K 21830 0 kqueue 14 22K 32K 166960K 204 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 120 415 0 411 3 2 1 3 0 8 0 rtentry 112 935 0 826 7 3 4 4 0 8 0 unpcb 144 1127 0 1112 10 8 2 4 0 8 1 syncache 336 14 0 14 7 6 1 1 0 8 1 tcpqe 32 8 0 8 3 2 1 1 0 8 1 tcpcb 808 920 0 912 29 21 8 11 0 8 6 arp 120 167 0 149 1 0 1 1 0 8 0 ipq 40 4 0 3 2 1 1 1 0 8 0 ipqe 40 37 0 36 2 1 1 1 0 8 0 inpcb 336 2365 0 2353 38 31 7 10 0 8 5 nd6 136 255 0 232 1 0 1 1 0 8 0 kcovpl 48 104 0 96 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 3804 0 3346 62 33 29 30 0 8 0 art_table 32 3805 0 3346 4 0 4 4 0 8 0 art_node 16 934 0 835 1 0 1 1 0 8 0 sysvmsgpl 40 13 0 11 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 9 0 0 1 0 1 1 0 8 0 shmpl 112 129 0 1 4 0 4 4 0 8 0 dirhash 1024 39 0 20 3 0 3 3 0 8 0 dino2pl 256 3312 0 1601 108 0 108 108 0 8 0 ffsino 272 3312 0 1601 115 0 115 115 0 8 0 nchpl 144 4984 0 3143 69 0 69 69 0 8 0 uvmvnodes 80 4673 0 0 96 0 96 96 0 8 0 vnodes 216 4673 0 0 260 0 260 260 0 8 0 namei 1024 24439 0 24438 10 8 2 2 0 8 1 percpumem 16 121 0 75 1 0 1 1 0 8 0 kstatmem 264 172 0 150 2 0 2 2 0 8 0 scxspl 216 45116 0 45116 18 15 3 8 1 8 3 plimitpl 152 651 0 626 2 0 2 2 0 8 0 sigapl 424 2450 0 2394 10 2 8 9 0 8 0 futexpl 64 15569 0 15568 7 6 1 1 0 8 0 knotepl 120 548 0 0 14 0 14 14 0 8 0 kqueuepl 216 442 0 432 5 4 1 3 0 8 0 pipepl 320 635 0 607 8 4 4 6 0 8 0 fdescpl 496 2431 0 2394 10 3 7 7 0 8 0 filepl 152 12989 0 12746 29 15 14 17 0 8 0 lockfpl 104 286 0 284 1 0 1 1 0 8 0 lockfspl 48 98 0 96 1 0 1 1 0 8 0 sessionpl 144 99 0 83 1 0 1 1 0 8 0 pgrppl 48 220 0 196 1 0 1 1 0 8 0 ucredpl 104 1980 0 1962 1 0 1 1 0 8 0 zombiepl 144 2394 0 2394 1 0 1 1 0 8 1 processpl 1160 2450 0 2394 8 2 6 6 0 8 0 procpl 648 4187 0 4126 9 2 7 7 0 8 0 srpgc 96 2 0 2 1 1 0 1 0 8 0 sosppl 168 15 0 15 4 4 0 1 0 8 0 sockpl 664 3919 0 3888 45 35 10 15 0 8 5 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 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 254 0 0 30 0 30 30 0 8 0 mtagpl 96 1 0 0 1 0 1 1 0 8 0 mbufpl 256 520 0 0 26 0 26 26 0 8 0 bufpl 280 8451 0 1942 466 0 466 466 0 8 0 anonpl 24 400685 0 395457 105 42 63 100 0 185 9 amapchunkpl 152 58767 0 58208 47 9 38 39 0 158 9 amappl16 200 8295 0 8247 74 62 12 23 0 8 8 amappl15 192 9 0 9 4 4 0 1 0 8 0 amappl14 184 268 0 257 1 0 1 1 0 8 0 amappl13 176 20 0 20 1 1 0 1 0 8 0 amappl12 168 4229 0 4194 7 4 3 3 0 8 1 amappl11 160 59 0 49 1 0 1 1 0 8 0 amappl10 152 12 0 12 1 1 0 1 0 8 0 amappl9 144 139 0 139 1 1 0 1 0 8 0 amappl8 136 25 0 23 1 0 1 1 0 8 0 amappl7 128 247 0 236 1 0 1 1 0 8 0 amappl6 120 899 0 897 1 0 1 1 0 8 0 amappl5 112 429 0 420 1 0 1 1 0 8 0 amappl4 104 517 0 496 1 0 1 1 0 8 0 amappl3 96 9913 0 9822 5 1 4 4 0 8 0 amappl2 88 2814 0 2733 3 0 3 3 0 8 0 amappl1 80 19366 0 18788 17 2 15 15 0 8 0 amappl 88 17226 0 17048 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 72 131 0 1 3 0 3 3 0 8 0 uaddrrnd 24 2431 0 2394 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2431 0 2394 1 0 1 1 0 8 0 vmmpekpl 168 22973 0 22909 5 1 4 5 0 8 0 vmmpepl 168 159411 0 157388 139 34 105 111 0 357 5 vmsppl 440 2430 0 2394 6 0 6 6 0 8 0 rwobjpl 56 50461 0 44739 92 8 84 84 0 8 1 pdppl 4096 4869 0 4788 335 248 87 113 0 8 6 pvpl 32 37594 0 0 304 1 303 303 0 265 0 pmappl 248 2430 0 2394 7 3 4 4 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 771 0 349 13 0 13 13 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83452ff0) 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_1(3f8,5) at x86_bus_space_io_read_1+0x37 sys/arch/amd64/amd64/bus_space.c:654 comcnputc(800,31) at comcnputc+0x250 comcn_read_reg sys/dev/ic/com.c:1655 [inline] comcnputc(800,31) at comcnputc+0x250 sys/dev/ic/com.c:1269 cnputc(31) at cnputc+0x61 sys/dev/cons.c:218 db_putchar(31) at db_putchar+0x65c sys/ddb/db_output.c:155 kprintf() at kprintf+0x2aba sys/kern/subr_prf.c:1065 db_printf(ffffffff8308ea0a) at db_printf+0x9b fault(ffffffff8303dbad) at fault+0xa7 sys/arch/amd64/amd64/trap.c:157 kpageflttrap(ffff80002cd6b4b0,8) at kpageflttrap+0x385 sys/arch/amd64/amd64/trap.c:290 kerntrap(ffff80002cd6b4b0) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b fifo_write(ffff80002cd6b5a0) at fifo_write+0x6e sys/miscfs/fifofs/fifo_vnops.c:281 end trace frame: 0xffff80002cd6b610, count: 0 ddb{0}> trace x86_ipi_db(ffffffff83452ff0) 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_1(3f8,5) at x86_bus_space_io_read_1+0x37 sys/arch/amd64/amd64/bus_space.c:654 comcnputc(800,31) at comcnputc+0x250 comcn_read_reg sys/dev/ic/com.c:1655 [inline] comcnputc(800,31) at comcnputc+0x250 sys/dev/ic/com.c:1269 cnputc(31) at cnputc+0x61 sys/dev/cons.c:218 db_putchar(31) at db_putchar+0x65c sys/ddb/db_output.c:155 kprintf() at kprintf+0x2aba sys/kern/subr_prf.c:1065 db_printf(ffffffff8308ea0a) at db_printf+0x9b fault(ffffffff8303dbad) at fault+0xa7 sys/arch/amd64/amd64/trap.c:157 kpageflttrap(ffff80002cd6b4b0,8) at kpageflttrap+0x385 sys/arch/amd64/amd64/trap.c:290 kerntrap(ffff80002cd6b4b0) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b fifo_write(ffff80002cd6b5a0) at fifo_write+0x6e sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd806c0392e8,ffff80002cd6b638,8,fffffd807f7d3068) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 vn_rdwr(1,fffffd806c0392e8,ffff800029fe6800,100,0,1,16e01ca9a94fd567,ffff80002cd6b760,fffffd806c0392e8,78) at vn_rdwr+0x12d sys/kern/vfs_vnops.c:324 ufs_symlink(ffff80002cd6b760) at ufs_symlink+0x1ee sys/ufs/ufs/ufs_vnops.c:1309 VOP_SYMLINK(fffffd806c039a80,ffff80002cd6b8e0,ffff80002cd6b910,ffff80002cd6b810,ffff800029fe6800) at VOP_SYMLINK+0x11a sys/kern/vfs_vops.c:432 dosymlinkat(ffff80002a159470,200010c0,4,200004c0) at dosymlinkat+0x1dd sys/kern/vfs_syscalls.c:1806 syscall(ffff80002cd6ba90) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002cd6ba90) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x316fca512d0, count: -21 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: 0x7e684e79ad80, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7e684e79ad80, count: -1