*cpu1: uvm_fault(0xfffffd8072f285d0, 0x8, 0, 1) -> e ddb{0}> trace proc_trampoline() at proc_trampoline+0xdc end of kernel end trace frame: 0xb6bab797b0, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800029503d90 rbx 0 rdx 0 rcx 0 rax 0x2a r8 0xffff800029503cc0 r9 0 r10 0x4de79fe37b0e11c r11 0x7b97661ca736ab2a r12 0 r13 0 r14 0 r15 0 rip 0xffffffff8223d50c proc_trampoline+0xdc cs 0x8 rflags 0x246 rsp 0xffff800029503d10 ss 0 proc_trampoline+0xdc: movl $0,%gs:0x538 ddb{0}> show proc PROC (syz-executor.2) pid=312324 stat=onproc flags process=10 proc=4000000 pri=81, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff80002121ad28,0xffffffff829e2c98 process=0xffff80002af2b1f8 user=0xffff8000294fe000, vmspace=0xfffffd8065f7d5d8 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 71912 235904 34875 32767 2 0x10 syz-executor.7 71912 144750 34875 32767 2 0x4000010 syz-executor.7 42479 282853 55253 32767 2 0x10 syz-executor.2 *42479 312324 55253 32767 7 0x4000010 syz-executor.2 50832 150411 14681 32767 2 0x10 syz-executor.0 50832 218803 14681 32767 3 0x4000090 fsleep syz-executor.0 26329 217845 91160 32767 2 0x10 syz-executor.3 26329 411814 91160 32767 3 0x4000090 fsleep syz-executor.3 87584 67819 86844 32767 2 0x10 syz-executor.4 87584 403898 86844 32767 7 0x4000010 syz-executor.4 34875 21947 62388 32767 3 0x90 nanoslp syz-executor.7 62388 99144 99537 0 3 0x82 wait syz-executor.7 91160 417942 22791 32767 3 0x90 nanoslp syz-executor.3 22791 121469 99537 0 3 0x82 wait syz-executor.3 55253 390508 25585 32767 3 0x90 nanoslp syz-executor.2 25585 388459 99537 0 3 0x82 wait syz-executor.2 88947 11700 0 0 3 0x14200 bored sosplice 25388 253648 5752 32767 3 0x10 biowait syz-executor.6 5752 145920 99537 0 3 0x82 wait syz-executor.6 86844 170460 42374 32767 3 0x90 nanoslp syz-executor.4 49312 326782 41368 32767 3 0x90 nanoslp syz-executor.5 42374 489650 99537 0 3 0x82 wait syz-executor.4 41368 18116 99537 0 3 0x82 wait syz-executor.5 74844 346081 62473 32767 3 0x10 biowait syz-executor.1 62473 226865 99537 0 3 0x82 wait syz-executor.1 14681 206018 12563 32767 3 0x90 nanoslp syz-executor.0 12563 48470 99537 0 3 0x82 wait syz-executor.0 99537 223622 16205 0 3 0x82 thrsleep syz-fuzzer 99537 215349 16205 0 3 0x4000082 nanoslp syz-fuzzer 99537 99286 16205 0 3 0x4000082 thrsleep syz-fuzzer 99537 133705 16205 0 3 0x4000082 thrsleep syz-fuzzer 99537 455589 16205 0 3 0x4000082 kqread syz-fuzzer 99537 478332 16205 0 3 0x4000082 nanoslp syz-fuzzer 99537 87864 16205 0 3 0x4000082 thrsleep syz-fuzzer 99537 455171 16205 0 3 0x4000082 thrsleep syz-fuzzer 16205 127767 37314 0 3 0x10008a sigsusp ksh 37314 257818 55082 0 3 0x9a kqread sshd 22299 317872 1 0 3 0x100083 ttyin getty 55082 70317 1 0 3 0x88 kqread sshd 77076 519679 52896 73 3 0x1100090 kqread syslogd 52896 131619 1 0 3 0x100082 netio syslogd 80268 435629 1 0 3 0x100080 kqread resolvd 4471 117079 20450 77 3 0x100092 kqread dhcpleased 37160 493396 20450 77 3 0x100092 kqread dhcpleased 20450 260310 1 0 3 0x80 kqread dhcpleased 90881 496015 0 0 3 0x14200 bored smr 90680 225863 0 0 2 0x14200 zerothread 79281 117933 0 0 3 0x14200 aiodoned aiodoned 42762 37340 0 0 3 0x14200 syncer update 87566 499690 0 0 3 0x14200 cleaner cleaner 4766 157666 0 0 3 0x14200 reaper reaper 13127 497598 0 0 3 0x14200 pgdaemon pagedaemon 45713 362333 0 0 3 0x14200 bored viomb 77206 8173 0 0 3 0x40014200 acpi0 acpi0 3036 40327 0 0 3 0x40014200 idle1 78844 329118 0 0 3 0x14200 bored softnet 92354 308340 0 0 3 0x14200 bored systqmp 28258 186209 0 0 3 0x14200 bored systq 6954 283195 0 0 3 0x40014200 bored softclock 76183 405821 0 0 3 0x40014200 idle0 1 272390 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 42479 (syz-executor.2) thread 0xffff80002121b508 (312324) exclusive rwlock amaplk r = 0 (0xfffffd806a68c7f8) #0 witness_lock+0x44d #1 uvm_fault_check+0x3ca sys/uvm/uvm_fault.c:774 #2 uvm_fault+0x102 sys/uvm/uvm_fault.c:602 #3 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 #4 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403 #5 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd8065f7d5f0) #0 witness_lock+0x44d #1 uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1762 #2 uvm_fault_check+0x3a sys/uvm/uvm_fault.c:674 #3 uvm_fault+0x102 sys/uvm/uvm_fault.c:602 #4 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 #5 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403 #6 recall_trap+0x8 Process 87584 (syz-executor.4) thread 0xffff8000211c17a0 (403898) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82a003b8) #0 witness_lock+0x44d #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x3d3 sys/kern/sched_bsd.c:416 #3 sleep_finish+0x198 sys/kern/kern_synch.c:437 #4 tsleep+0x12c sys/kern/kern_synch.c:158 #5 biowait+0x91 sys/kern/vfs_bio.c:1271 #6 bwrite+0x21b sys/kern/vfs_bio.c:772 #7 VOP_BWRITE+0x4a sys/kern/vfs_vops.c:656 #8 ufs_direnter+0x8fa sys/ufs/ufs/ufs_lookup.c:909 #9 ufs_makeinode+0x4cc sys/ufs/ufs/ufs_vnops.c:1868 #10 ufs_symlink+0x47 sys/ufs/ufs/ufs_vnops.c:1382 #11 VOP_SYMLINK+0xd0 sys/kern/vfs_vops.c:442 #12 dosymlinkat+0x154 sys/kern/vfs_syscalls.c:1804 #13 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #13 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80687ead58) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vget+0x1d3 sys/kern/vfs_subr.c:678 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1318 #8 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394 #9 ufs_makeinode+0xae sys/ufs/ufs/ufs_vnops.c:1830 #10 ufs_symlink+0x47 sys/ufs/ufs/ufs_vnops.c:1382 #11 VOP_SYMLINK+0xd0 sys/kern/vfs_vops.c:442 #12 dosymlinkat+0x154 sys/kern/vfs_syscalls.c:1804 #13 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #13 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #14 Xsyscall+0x128 Process 25388 (syz-executor.6) thread 0xffff8000211c07e0 (253648) exclusive rrwlock inode r = 0 (0xfffffd80687eab38) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1347 #6 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394 #7 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162 #8 VOP_MKDIR+0xbf sys/kern/vfs_vops.c:404 #9 domkdirat+0x121 sys/kern/vfs_syscalls.c:3101 #10 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #10 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806a4993d0) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:413 #6 namei+0x36a sys/kern/vfs_lookup.c:245 #7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3086 #8 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #9 Xsyscall+0x128 Process 74844 (syz-executor.1) thread 0xffff8000211c1260 (346081) exclusive rrwlock inode r = 0 (0xfffffd806acb2d58) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vget+0x1d3 sys/kern/vfs_subr.c:678 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1318 #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:561 #11 namei+0x36a sys/kern/vfs_lookup.c:245 #12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1850 #13 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #13 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806acb21a8) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:413 #6 namei+0x36a sys/kern/vfs_lookup.c:245 #7 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1850 #8 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10192 6410K 6419K 78643K 11310 0 pcb 13 20K 24K 78643K 21 0 rtable 264 7K 8K 78643K 1297 0 ifaddr 81 17K 17K 78643K 146 0 sysctl 2 0K 0K 78643K 2 0 counters 56 35K 35K 78643K 74 0 ioctlops 0 0K 2K 78643K 122 0 iov 0 0K 28K 78643K 1792 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1271 79K 79K 78643K 3568 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 115 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 3399 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 23 85K 110K 78643K 10510 0 sigio 0 0K 0K 78643K 248 0 proc 56 78K 103K 78643K 1486 0 subproc 104 6K 6K 78643K 221 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 654 0 in_multi 99 6K 7K 78643K 375 0 ether_multi 1 0K 0K 78643K 74 0 mrt 3 0K 0K 78643K 3 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 169 758K 758K 78643K 169 0 exec 0 0K 2K 78643K 2231 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 7 26K 26K 78643K 7 0 UVM amap 317 89K 107K 78643K 64965 0 UVM aobj 131 5K 5K 78643K 137 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 259 0 NDP 11 0K 2K 78643K 54 0 temp 124 4730K 4810K 78643K 28192 0 kqueue 14 20K 26K 78643K 911 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> 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 120 761 0 757 7 6 1 3 0 8 0 rtentry 112 235 0 110 4 0 4 4 0 8 0 unpcb 136 10023 0 10010 85 80 5 9 0 8 4 syncache 296 79 0 79 13 13 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 115 0 115 9 9 0 1 0 8 0 tcpcb 736 13755 0 13745 235 229 6 27 0 8 5 arp 120 39 0 20 1 0 1 1 0 8 0 ipq 40 59 0 58 5 4 1 1 0 8 0 ipqe 40 379 0 378 5 4 1 1 0 8 0 inpcb 312 19200 0 19184 178 174 4 24 0 8 1 ip6q 72 15 0 15 5 5 0 1 0 8 0 ip6af 40 24 0 24 5 5 0 1 0 8 0 nd6 48 71 0 34 1 0 1 1 0 8 0 kcovpl 48 17 0 9 1 0 1 1 0 8 0 rttmrq 48 4 0 0 1 0 1 1 0 8 0 rttmr 72 7 0 6 2 1 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1050 0 454 42 4 38 38 0 8 0 art_table 32 1051 0 454 5 0 5 5 0 8 0 art_node 16 234 0 119 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 1 1 0 1 1 0 8 0 semapl 112 3393 0 3383 1 0 1 1 0 8 0 shmpl 112 134 0 6 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 15820 0 14372 91 0 91 91 0 8 0 ffsino 272 15820 0 14372 97 0 97 97 0 8 0 nchpl 144 29544 0 27901 63 0 63 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 100363 0 100361 2 1 1 2 0 8 0 percpumem 16 49 0 9 1 0 1 1 0 8 0 kstatmem 264 40 0 18 2 0 2 2 0 8 0 scxspl 216 88370 0 88368 49 47 2 8 0 8 1 plimitpl 152 2435 0 2413 9 7 2 2 0 8 1 sigapl 424 10767 0 10717 7 0 7 7 0 8 0 futexpl 64 93684 0 93682 1 0 1 1 0 8 0 knotepl 120 949 0 0 17 0 17 17 0 8 0 kqueuepl 216 3720 0 3711 62 61 1 6 0 8 0 pipepl 336 2262 0 2234 67 64 3 9 0 8 0 fdescpl 496 10752 0 10718 6 0 6 6 0 8 0 filepl 152 80787 0 80547 123 108 15 21 0 8 5 lockfpl 104 1265 0 1263 2 1 1 2 0 8 0 lockfspl 48 401 0 399 1 0 1 1 0 8 0 sessionpl 144 32 0 16 1 0 1 1 0 8 0 pgrppl 48 72 0 56 1 0 1 1 0 8 0 ucredpl 96 12709 0 12691 1 0 1 1 0 8 0 zombiepl 144 10718 0 10717 1 0 1 1 0 8 0 processpl 1064 10767 0 10717 4 0 4 4 0 8 0 procpl 672 31398 0 31336 20 13 7 8 0 8 1 sosppl 168 224 0 224 18 17 1 1 0 8 1 sockpl 480 30424 0 30396 601 589 12 41 0 8 8 mcl64k 65536 26 0 0 3 0 3 3 0 8 0 mcl16k 16384 33 0 0 4 1 3 3 0 8 0 mcl12k 12288 33 0 0 2 0 2 2 0 8 0 mcl9k 9216 35 0 0 2 0 2 2 0 8 0 mcl8k 8192 33 0 0 5 2 3 3 0 8 0 mcl4k 4096 24 0 0 3 1 2 3 0 8 0 mcl2k2 2112 10 0 0 1 0 1 1 0 8 0 mcl2k 2048 228 0 0 18 0 18 18 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 3785 0 0 226 0 226 226 0 8 0 bufpl 288 21613 0 15285 453 0 453 453 0 8 0 anonpl 24 2230013 0 2216952 266 146 120 133 0 186 17 amapchunkpl 152 220106 0 219518 175 149 26 45 0 158 0 amappl16 200 35796 0 35414 150 128 22 45 0 8 0 amappl15 192 413 0 413 3 3 0 1 0 8 0 amappl14 184 1916 0 1911 1 0 1 1 0 8 0 amappl13 176 2517 0 2511 1 0 1 1 0 8 0 amappl12 168 1639 0 1631 1 0 1 1 0 8 0 amappl11 160 2708 0 2691 1 0 1 1 0 8 0 amappl10 152 40 0 37 1 0 1 1 0 8 0 amappl9 144 683 0 680 1 0 1 1 0 8 0 amappl8 136 2849 0 2705 7 1 6 6 0 8 0 amappl7 128 1873 0 1858 1 0 1 1 0 8 0 amappl6 120 455 0 432 2 1 1 2 0 8 0 amappl5 112 8481 0 8460 1 0 1 1 0 8 0 amappl4 104 5646 0 5613 3 1 2 2 0 8 0 amappl3 96 34283 0 34230 2 0 2 2 0 8 0 amappl2 88 14186 0 14106 3 1 2 3 0 8 0 amappl1 80 260683 0 259999 20 4 16 19 0 8 0 amappl 88 63802 0 63627 6 1 5 5 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 72 136 0 6 3 0 3 3 0 8 0 uaddrrnd 24 10752 0 10718 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 10752 0 10718 1 0 1 1 0 8 0 vmmpekpl 168 83576 0 83511 4 0 4 4 0 8 0 vmmpepl 168 1064509 0 1061786 245 111 134 147 0 357 4 vmsppl 368 10751 0 10718 4 0 4 4 0 8 0 rwobjpl 56 272554 0 265079 118 8 110 113 0 8 0 pdppl 4096 21511 0 21436 284 203 81 89 0 8 6 pvpl 32 4242205 0 4223844 465 252 213 240 0 265 42 pmappl 248 10751 0 10718 4 1 3 3 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1719 0 681 31 0 31 31 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace proc_trampoline() at proc_trampoline+0xdc end of kernel end trace frame: 0xb6bab797b0, count: -1 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020ce8ff0) 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_write_1(3f8,0,2d) at x86_bus_space_io_write_1+0x31 sys/arch/amd64/amd64/bus_space.c:759 comcnputc(800,2d) at comcnputc+0x128 bus_space_barrier machine/bus.h:481 [inline] comcnputc(800,2d) at comcnputc+0x128 sys/dev/ic/com.c:1263 cnputc(2d) at cnputc+0x4b sys/dev/cons.c:239 db_putchar(2d) at db_putchar+0x3fc sys/ddb/db_output.c:155 kprintf() at kprintf+0x20ec sys/kern/subr_prf.c:1068 db_printf(ffffffff8264b7e3) at db_printf+0x85 sys/kern/subr_prf.c:502 fault(ffffffff825fa750) at fault+0x95 sys/arch/amd64/amd64/trap.c:154 kpageflttrap(ffff8000260a1890,8) at kpageflttrap+0x25a sys/arch/amd64/amd64/trap.c:275 kerntrap(ffff8000260a1890) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b fifo_write(ffff8000260a1990) at fifo_write+0x4e sys/miscfs/fifofs/fifo_vnops.c:271 end trace frame: 0xffff8000260a1a00, count: 0 ddb{1}> trace x86_ipi_db(ffff800020ce8ff0) 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_write_1(3f8,0,2d) at x86_bus_space_io_write_1+0x31 sys/arch/amd64/amd64/bus_space.c:759 comcnputc(800,2d) at comcnputc+0x128 bus_space_barrier machine/bus.h:481 [inline] comcnputc(800,2d) at comcnputc+0x128 sys/dev/ic/com.c:1263 cnputc(2d) at cnputc+0x4b sys/dev/cons.c:239 db_putchar(2d) at db_putchar+0x3fc sys/ddb/db_output.c:155 kprintf() at kprintf+0x20ec sys/kern/subr_prf.c:1068 db_printf(ffffffff8264b7e3) at db_printf+0x85 sys/kern/subr_prf.c:502 fault(ffffffff825fa750) at fault+0x95 sys/arch/amd64/amd64/trap.c:154 kpageflttrap(ffff8000260a1890,8) at kpageflttrap+0x25a sys/arch/amd64/amd64/trap.c:275 kerntrap(ffff8000260a1890) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b fifo_write(ffff8000260a1990) at fifo_write+0x4e sys/miscfs/fifofs/fifo_vnops.c:271 VOP_WRITE(fffffd807ce38cc8,ffff8000260a1a28,8,fffffd807f7d7420) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 vn_rdwr(1,fffffd807ce38cc8,ffff800021197000,78,0,1,ad9eb4113ef33e78,ffff8000260a1b50,fffffd807ce38cc8,78) at vn_rdwr+0xe9 sys/kern/vfs_vnops.c:330 ufs_symlink(ffff8000260a1b50) at ufs_symlink+0x142 sys/ufs/ufs/ufs_vnops.c:1398 VOP_SYMLINK(fffffd807b205390,ffff8000260a1cd0,ffff8000260a1d00,ffff8000260a1c00,ffff800021197000) at VOP_SYMLINK+0xd0 sys/kern/vfs_vops.c:442 dosymlinkat(ffff8000211c17a0,200000c0,3,20000140) at dosymlinkat+0x154 sys/kern/vfs_syscalls.c:1804 syscall(ffff8000260a1e80) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000260a1e80) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc0bc1510a50, count: -21