uvm_fault(fffffd806a5d7a20,20001000,0,2) at uvm_fault+0x23e sys/uvm/uvm_fault.c:628 kpageflttrap(ffff8000216b1520,20001280) at kpageflttrap+0x202 sys/arch/amd64/amd64/trap.c:265 kerntrap(ffff8000216b1520) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:321 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x53 syscall(ffff8000216b1750) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000216b1750) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc34d0bbf460, count: -15 ddb{0}> show registers rdi 0xffff8000254d0000 rsi 0x3af9 __ALIGN_SIZE+0x2af9 rbp 0xffff8000216b0ea0 rbx 0x3 rdx 0xffff8000254d0000 rcx 0x3af8 __ALIGN_SIZE+0x2af8 rax 0xffffffff82097e57 db_enter+0x17 r8 0xffffffff81631b01 witness_checkorder+0x1061 r9 0x5 r10 0xbbf44ddc8e0b4323 r11 0xadf1c5b96a28970c r12 0 r13 0xfffffd806b004098 r14 0 r15 0xfffffd8002ce0600 rip 0xffffffff82097e58 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff8000216b0e90 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.0) pid=117733 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=78, nice=20 forw=0xffffffffffffffff, list=0xffff800021279500,0xffff800021279a50 process=0xffff800024325968 user=0xffff8000216ac000, vmspace=0xfffffd806a5d7a20 estcpu=28, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 88884 430823 48550 0 2 0 syz-executor.0 *88884 117733 48550 0 7 0x4000000 syz-executor.0 88884 388810 48550 0 3 0x4000080 fsleep syz-executor.0 20171 281086 51672 0 7 0 syz-executor.1 20171 148311 51672 0 3 0x4000080 piperd syz-executor.1 20171 153603 51672 0 2 0x4000080 syz-executor.1 48550 523663 72106 0 3 0x82 nanoslp syz-executor.0 51672 368341 72106 0 3 0x82 nanoslp syz-executor.1 61965 85854 0 0 3 0x14280 nfsidl nfsio 99363 498354 0 0 3 0x14280 nfsidl nfsio 90621 347129 0 0 3 0x14280 nfsidl nfsio 81605 31688 0 0 3 0x14280 nfsidl nfsio 87081 292716 0 0 3 0x14280 nfsidl nfsio 99128 19183 0 0 3 0x14280 nfsidl nfsio 34956 240102 0 0 3 0x14280 nfsidl nfsio 51987 443279 0 0 3 0x14280 nfsidl nfsio 64284 411183 0 0 3 0x14280 nfsidl nfsio 91327 5783 0 0 3 0x14280 nfsidl nfsio 28942 145084 0 0 3 0x14280 nfsidl nfsio 41489 449929 0 0 3 0x14280 nfsidl nfsio 52492 126999 0 0 3 0x14280 nfsidl nfsio 56313 98994 0 0 3 0x14280 nfsidl nfsio 89296 108818 0 0 3 0x14280 nfsidl nfsio 38434 83316 0 0 3 0x14280 nfsidl nfsio 67901 388418 0 0 3 0x14280 nfsidl nfsio 95249 378646 0 0 3 0x14280 nfsidl nfsio 56410 344539 0 0 3 0x14280 nfsidl nfsio 3203 510499 0 0 3 0x14280 nfsidl nfsio 66883 227273 0 0 3 0x14200 bored sosplice 72106 25293 81427 0 3 0x82 thrsleep syz-fuzzer 72106 330148 81427 0 3 0x4000082 thrsleep syz-fuzzer 72106 504916 81427 0 3 0x4000082 thrsleep syz-fuzzer 72106 108554 81427 0 3 0x4000082 kqread syz-fuzzer 72106 43697 81427 0 3 0x4000082 thrsleep syz-fuzzer 72106 116981 81427 0 3 0x4000082 thrsleep syz-fuzzer 72106 316638 81427 0 3 0x4000082 thrsleep syz-fuzzer 72106 401205 81427 0 3 0x4000082 thrsleep syz-fuzzer 81427 412776 76747 0 3 0x10008a sigsusp ksh 76747 206314 66228 0 3 0x92 select sshd 55318 33353 1 0 3 0x100083 ttyin getty 66228 337475 1 0 3 0x80 select sshd 64375 177881 15102 74 3 0x100092 bpf pflogd 15102 146327 1 0 3 0x80 netio pflogd 38771 255499 66832 73 3 0x100090 kqread syslogd 66832 249485 1 0 3 0x100082 netio syslogd 51711 263748 1 77 3 0x100090 poll dhclient 12519 319126 1 0 3 0x80 poll dhclient 92742 163401 0 0 3 0x14200 bored smr 21382 354889 0 0 2 0x14200 zerothread 27016 27274 0 0 3 0x14200 aiodoned aiodoned 90147 159719 0 0 3 0x14200 syncer update 18588 477311 0 0 3 0x14200 cleaner cleaner 73276 30628 0 0 3 0x14200 reaper reaper 5804 519314 0 0 3 0x14200 pgdaemon pagedaemon 62851 198583 0 0 3 0x14200 bored crynlk 81906 236235 0 0 3 0x14200 bored crypto 14621 213278 0 0 3 0x14200 bored viomb 59948 253586 0 0 3 0x40014200 acpi0 acpi0 56659 96095 0 0 3 0x40014200 idle1 68763 501603 0 0 3 0x14200 bored softnet 50314 291239 0 0 3 0x14200 bored systqmp 11622 369138 0 0 3 0x14200 bored systq 75909 120024 0 0 3 0x40014200 bored softclock 65274 154637 0 0 3 0x40014200 idle0 1 193897 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 88884 (syz-executor.0) thread 0xffff8000212797a0 (117733) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff827d30c8) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 kpageflttrap+0x1f1 sys/arch/amd64/amd64/trap.c:265 #2 kerntrap+0xef sys/arch/amd64/amd64/trap.c:321 #3 alltraps_kern_meltdown+0x7b #4 copyout+0x53 #5 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #5 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 #6 Xsyscall+0x128 exclusive rwlock fdlock r = 0 (0xfffffd807ccb2638) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 dopipe+0xe0 #2 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #2 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 #3 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9572 6474K 7338K 78643K 21273 0 pcb 13 8K 8K 78643K 513 0 rtable 108 3K 4K 78643K 1489 0 ifaddr 90 17K 17K 78643K 433 0 sysctl 2 0K 0K 78643K 10 0 counters 46 34K 34K 78643K 168 0 ioctlops 0 0K 4K 78643K 1762 0 iov 0 0K 32K 78643K 475 0 mount 1 1K 1K 78643K 1 0 vnodes 1235 78K 78K 78643K 4835 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 74 0 VM map 2 1K 1K 78643K 2 0 sem 11 1K 1K 78643K 13 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 6 17K 25K 78643K 9475 0 sigio 0 0K 0K 78643K 10 0 proc 63 63K 95K 78643K 1429 0 subproc 32 2K 2K 78643K 187 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 648 0 in_multi 33 2K 2K 78643K 559 0 ether_multi 1 0K 0K 78643K 81 0 mrt 0 0K 0K 78643K 110 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 61 281K 281K 78643K 61 0 exec 0 0K 2K 78643K 849 0 pfkey data 0 0K 0K 78643K 15 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 206 111K 126K 78643K 22939 0 UVM aobj 93 8K 8K 78643K 97 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 361 0 NDP 17 0K 0K 78643K 148 0 temp 151 3975K 4102K 78643K 37676 0 kqueue 3 4K 16K 78643K 341 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 arp 64 26 0 20 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 120 356 0 354 1 0 1 1 0 8 0 rtentry 112 314 0 270 2 0 2 2 0 8 0 unpcb 120 1837 0 1823 2 0 2 2 0 8 1 syncache 296 98 0 98 14 14 0 1 0 8 0 tcpqe 32 18 0 18 5 5 0 1 0 8 0 tcpcb 736 1343 0 1337 24 22 2 4 0 8 0 inpcb 304 3971 0 3963 10 8 2 2 0 8 1 rttmr 72 46 0 46 8 7 1 1 0 8 1 nd6 48 83 0 77 1 0 1 1 0 8 0 pkpcb 40 102 0 102 14 13 1 1 0 8 1 kcovpl 48 11 0 9 1 0 1 1 0 8 0 swfcl 56 4 0 0 1 0 1 1 0 8 0 ppxss 1128 11 0 11 5 5 0 1 0 8 0 pffrag 232 9 0 9 2 1 1 1 0 482 1 pffrnode 88 9 0 9 2 1 1 1 0 8 1 pffrent 40 22 0 22 2 1 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 pfstitem 24 176 0 145 1 0 1 1 0 8 0 pfstkey 112 176 0 145 2 1 1 2 0 8 0 pfstate 320 176 0 145 6 2 4 4 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 937 0 746 18 6 12 14 0 8 0 art_table 32 938 0 746 2 0 2 2 0 8 0 art_node 16 298 0 258 1 0 1 1 0 8 0 semapl 112 9 0 0 1 0 1 1 0 8 0 shmpl 112 94 0 4 3 0 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 13419 0 12008 92 3 89 89 0 8 0 ffsino 272 13419 0 12008 95 0 95 95 0 8 0 nchpl 144 24676 0 23081 60 0 60 60 0 8 0 uvmvnodes 72 5926 0 0 108 0 108 108 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 61211 0 61211 2 1 1 1 0 8 1 percpumem 16 95 0 61 1 0 1 1 0 8 0 vcpupl 1984 7 0 0 1 0 1 1 0 8 0 vmpool 560 24 0 17 3 2 1 1 0 8 0 scxspl 216 81364 0 81364 15 14 1 8 0 8 1 plimitpl 152 137 0 129 1 0 1 1 0 8 0 sigapl 424 9686 0 9632 7 0 7 7 0 8 0 futexpl 56 61399 0 61398 2 1 1 1 0 8 0 knotepl 112 639 0 619 1 0 1 1 0 8 0 kqueuepl 168 3424 0 3418 1 0 1 1 0 8 0 pipepl 336 567 0 553 6 4 2 2 0 8 0 fdescpl 496 9648 0 9631 3 0 3 3 0 8 0 filepl 152 30994 0 30886 7 1 6 6 0 8 1 lockfpl 104 1579 0 1577 1 0 1 1 0 8 0 lockfspl 48 546 0 544 1 0 1 1 0 8 0 sessionpl 144 27 0 16 1 0 1 1 0 8 0 pgrppl 48 38 0 27 1 0 1 1 0 8 0 ucredpl 96 3351 0 3340 1 0 1 1 0 8 0 zombiepl 144 9632 0 9632 1 0 1 1 0 8 1 processpl 1080 9686 0 9632 4 0 4 4 0 8 0 procpl 672 21534 0 21469 8 2 6 6 0 8 0 sosppl 168 138 0 137 10 9 1 1 0 8 0 sockpl 432 6271 0 6247 19 11 8 8 0 8 4 mcl64k 65536 28 0 0 3 0 3 3 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 14 0 0 2 0 2 2 0 8 0 mcl9k 9216 5 0 0 1 0 1 1 0 8 0 mcl8k 8192 10 0 0 2 0 2 2 0 8 0 mcl4k 4096 19 0 0 3 1 2 3 0 8 0 mcl2k2 2112 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 361 0 0 16 1 15 16 0 8 0 mtagpl 96 390 0 0 8 0 8 8 0 8 0 mbufpl 256 1020 0 0 48 0 48 48 0 8 0 bufpl 280 22572 0 16312 448 0 448 448 0 8 0 anonpl 24 682868 0 675788 98 45 53 67 0 186 9 amapchunkpl 152 39303 0 39105 49 41 8 22 0 158 0 amappl16 200 31218 0 30968 42 25 17 26 0 8 3 amappl15 192 2513 0 2511 1 0 1 1 0 8 0 amappl14 184 3 0 2 1 0 1 1 0 8 0 amappl13 176 2857 0 2853 1 0 1 1 0 8 0 amappl12 168 2707 0 2701 1 0 1 1 0 8 0 amappl11 160 46 0 33 1 0 1 1 0 8 0 amappl10 152 32 0 24 1 0 1 1 0 8 0 amappl9 144 860 0 859 1 0 1 1 0 8 0 amappl8 136 695 0 580 4 0 4 4 0 8 0 amappl7 128 668 0 657 1 0 1 1 0 8 0 amappl6 120 112 0 94 1 0 1 1 0 8 0 amappl5 112 5327 0 5315 1 0 1 1 0 8 0 amappl4 104 3408 0 3362 3 1 2 2 0 8 0 amappl3 96 4494 0 4480 1 0 1 1 0 8 0 amappl2 88 78449 0 78368 3 0 3 3 0 8 0 amappl1 80 279061 0 278546 26 14 12 21 0 8 0 amappl 88 21975 0 21908 2 0 2 2 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 64 96 0 4 2 0 2 2 0 8 0 uaddrrnd 24 9672 0 9648 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 9672 0 9648 1 0 1 1 0 8 0 vmmpekpl 168 44224 0 44186 2 0 2 2 0 8 0 vmmpepl 168 1198305 0 1196604 124 48 76 84 0 357 1 vmsppl 368 9671 0 9648 3 0 3 3 0 8 0 rwobjpl 56 252056 0 250995 34 18 16 19 0 8 1 pdppl 4096 19351 0 19303 69 21 48 49 0 8 0 pvpl 32 3051429 0 3040944 261 155 106 121 0 265 20 pmappl 232 9671 0 9648 4 2 2 2 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 391 0 62 10 0 10 10 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 witness_checkorder(fffffd806b004098,9,0) at witness_checkorder+0x108b rw_enter(fffffd806b004088,81) at rw_enter+0xd4 rrw_enter(fffffd806b004088,81) at rrw_enter+0x88 sys/kern/kern_rwlock.c:461 VOP_LOCK(fffffd807c57b8c8,81) at VOP_LOCK+0x4b sys/kern/vfs_vops.c:614 vn_lock(fffffd807c57b8c8,81) at vn_lock+0x6c sys/kern/vfs_vnops.c:575 uvn_get(fffffd80676b38d0,0,ffff8000216b1228,ffff8000216b120c,0,0) at uvn_get+0x276 uvm_vnode_lock sys/uvm/uvm_vnode.c:1499 [inline] uvn_get(fffffd80676b38d0,0,ffff8000216b1228,ffff8000216b120c,0,0) at uvn_get+0x276 sys/uvm/uvm_vnode.c:993 uvm_fault_lower(ffff8000216b1390,ffff8000216b13c8,ffff8000216b1310,0) at uvm_fault_lower+0x54d sys/uvm/uvm_fault.c:1213 uvm_fault(fffffd806a5d7a20,20001000,0,2) at uvm_fault+0x23e sys/uvm/uvm_fault.c:628 kpageflttrap(ffff8000216b1520,20001280) at kpageflttrap+0x202 sys/arch/amd64/amd64/trap.c:265 kerntrap(ffff8000216b1520) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:321 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x53 syscall(ffff8000216b1750) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000216b1750) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc34d0bbf460, count: -15 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020d68ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 end of kernel end trace frame: 0x7f7fffffae60, count: -3