uvm_fault(fffffd806a5195d8,20000000,0,1) at uvm_fault+0x17c sys/uvm/uvm_fault.c:603 kpageflttrap(ffff800024581790,20000000) at kpageflttrap+0x202 sys/arch/amd64/amd64/trap.c:265 kerntrap(ffff800024581790) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:321 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyin() at copyin+0x53 sys_connect(ffff8000212a4fd0,ffff800024581958,ffff8000245819a0) at sys_connect+0x9b sys/kern/uipc_syscalls.c:362 syscall(ffff800024581a20) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800024581a20) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe3ce7984a10, count: -13 ddb{1}> show registers rdi 0x3 rsi 0x40000 acpi_pdirpa+0x2be68 rbp 0xffff800024581290 rbx 0x3 rdx 0xffff800000af8900 rcx 0x3 rax 0x3ffff acpi_pdirpa+0x2be67 r8 0xffffffff816a9031 witness_checkorder+0x1061 r9 0x5 r10 0xf60252f72e5e3adc r11 0xdd348014857d6ae r12 0xffffffff8285e4c0 w_lodata+0x46990 r13 0xffffffff8275f620 netlock+0x10 r14 0xffffffff8285c520 w_lodata+0x449f0 r15 0xfffffd8002cdc680 rip 0xffffffff81446938 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800024581280 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.0) pid=456270 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=77, nice=20 forw=0xffffffffffffffff, list=0xffff8000212a4010,0xffffffff8293dcf8 process=0xffff80002452c888 user=0xffff80002457c000, vmspace=0xfffffd806a5195d8 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 11273 33023 67304 0 7 0 syz-executor.0 *11273 456270 67304 0 7 0x4000000 syz-executor.0 45389 477382 49928 0 3 0x82 nanoslp syz-executor.1 67304 232693 49928 0 3 0x82 nanoslp syz-executor.0 18204 40549 0 0 3 0x14200 bored sosplice 52145 342541 0 0 3 0x14280 nfsidl nfsio 3541 19649 0 0 3 0x14280 nfsidl nfsio 73113 227750 0 0 3 0x14280 nfsidl nfsio 57933 308283 0 0 3 0x14280 nfsidl nfsio 23875 144973 0 0 3 0x14280 nfsidl nfsio 60219 389733 0 0 3 0x14280 nfsidl nfsio 86318 231524 0 0 3 0x14280 nfsidl nfsio 219 119830 0 0 3 0x14280 nfsidl nfsio 65296 418785 0 0 3 0x14280 nfsidl nfsio 6469 244872 0 0 3 0x14280 nfsidl nfsio 41677 138351 0 0 3 0x14280 nfsidl nfsio 24067 33395 0 0 3 0x14280 nfsidl nfsio 68772 330895 0 0 3 0x14280 nfsidl nfsio 70220 168459 0 0 3 0x14280 nfsidl nfsio 23040 497167 0 0 3 0x14280 nfsidl nfsio 92789 60786 0 0 3 0x14280 nfsidl nfsio 97392 409421 0 0 3 0x14280 nfsidl nfsio 25308 506454 0 0 3 0x14280 nfsidl nfsio 19658 279252 0 0 3 0x14280 nfsidl nfsio 89495 19795 0 0 3 0x14280 nfsidl nfsio 49928 219233 70542 0 3 0x82 thrsleep syz-fuzzer 49928 326356 70542 0 3 0x4000082 nanoslp syz-fuzzer 49928 232597 70542 0 3 0x4000082 nanoslp syz-fuzzer 49928 238344 70542 0 3 0x4000082 thrsleep syz-fuzzer 49928 83930 70542 0 3 0x4000082 thrsleep syz-fuzzer 49928 350793 70542 0 3 0x4000082 thrsleep syz-fuzzer 49928 475159 70542 0 3 0x4000082 kqread syz-fuzzer 49928 173764 70542 0 3 0x4000082 thrsleep syz-fuzzer 70542 453592 27125 0 3 0x10008a sigsusp ksh 27125 157433 70742 0 3 0x92 select sshd 57770 486637 1 0 3 0x100083 ttyin getty 70742 238087 1 0 3 0x80 select sshd 75439 504430 1619 74 3 0x100092 bpf pflogd 1619 444338 1 0 3 0x80 netio pflogd 33423 453123 45809 73 3 0x100090 kqread syslogd 45809 512799 1 0 3 0x100082 netio syslogd 40245 276710 1 77 3 0x100090 poll dhclient 5478 171982 1 0 3 0x80 poll dhclient 34118 74737 0 0 3 0x14200 bored smr 73055 386037 0 0 3 0x14200 pgzero zerothread 73556 201547 0 0 3 0x14200 aiodoned aiodoned 98443 272323 0 0 3 0x14200 syncer update 58023 226860 0 0 3 0x14200 cleaner cleaner 78919 421781 0 0 3 0x14200 reaper reaper 64357 451215 0 0 3 0x14200 pgdaemon pagedaemon 1198 68437 0 0 3 0x14200 bored crynlk 42085 448267 0 0 3 0x14200 bored crypto 74445 151139 0 0 3 0x14200 bored viomb 34181 228071 0 0 3 0x40014200 acpi0 acpi0 70645 8501 0 0 3 0x40014200 idle1 94906 362008 0 0 3 0x14200 bored softnet 99592 510252 0 0 3 0x14200 bored systqmp 30251 364169 0 0 3 0x14200 bored systq 47868 202445 0 0 3 0x40014200 bored softclock 417 267623 0 0 3 0x40014200 idle0 1 33280 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 11273 (syz-executor.0) thread 0xffff8000212a4fd0 (456270) exclusive rrwlock inode r = 0 (0xfffffd806e38ff88) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 rw_enter+0x416 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:614 #4 vn_lock+0x6c sys/kern/vfs_vnops.c:575 #5 uvn_get+0xd7 uvm_vnode_lock sys/uvm/uvm_vnode.c:1499 [inline] #5 uvn_get+0xd7 sys/uvm/uvm_vnode.c:993 #6 uvm_fault_lower+0x5e7 sys/uvm/uvm_fault.c:1206 #7 uvm_fault+0x17c sys/uvm/uvm_fault.c:603 #8 kpageflttrap+0x202 sys/arch/amd64/amd64/trap.c:265 #9 kerntrap+0xef sys/arch/amd64/amd64/trap.c:321 #10 alltraps_kern_meltdown+0x7b #11 copyin+0x53 #12 sys_connect+0x9b sys/kern/uipc_syscalls.c:362 #13 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #13 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 #14 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 2 (0xffffffff828cdca8) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 syscall+0x3fd mi_syscall sys/sys/syscall_mi.h:93 [inline] #1 syscall+0x3fd sys/arch/amd64/amd64/trap.c:590 #2 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9536 6444K 7153K 78643K 16060 0 pcb 13 8K 8K 78643K 245 0 rtable 107 3K 4K 78643K 845 0 ifaddr 69 13K 13K 78643K 175 0 sysctl 1 1K 1K 78643K 1 0 counters 44 34K 34K 78643K 74 0 ioctlops 0 0K 4K 78643K 1683 0 iov 0 0K 16K 78643K 115 0 mount 1 1K 1K 78643K 1 0 vnodes 1225 77K 77K 78643K 3168 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 41 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 297 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 5 13K 25K 78643K 6485 0 sigio 0 0K 0K 78643K 6 0 proc 63 63K 95K 78643K 1049 0 subproc 32 2K 2K 78643K 170 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 354 0 in_multi 33 2K 2K 78643K 340 0 ether_multi 1 0K 0K 78643K 47 0 mrt 1 0K 0K 78643K 27 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 67 307K 307K 78643K 67 0 exec 0 0K 2K 78643K 670 0 pfkey data 0 0K 1K 78643K 6 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 224 322K 323K 78643K 15844 0 UVM aobj 58 7K 7K 78643K 98 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 214 0 NDP 14 0K 0K 78643K 62 0 temp 130 3974K 4070K 78643K 39205 0 kqueue 3 4K 12K 78643K 173 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 arp 64 22 0 16 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 120 215 0 213 1 0 1 1 0 8 0 rtentry 112 205 0 161 2 0 2 2 0 8 0 unpcb 120 985 0 973 2 1 1 2 0 8 0 syncache 296 46 0 46 6 5 1 1 0 8 1 tcpqe 32 108 0 108 4 4 0 1 0 8 0 tcpcb 736 859 0 855 21 19 2 5 0 8 1 inpcb 304 2174 0 2167 7 5 2 2 0 8 1 rttmr 72 7 0 7 2 2 0 1 0 8 0 nd6 48 48 0 42 1 0 1 1 0 8 0 pkpcb 40 52 0 52 7 7 0 1 0 8 0 kcovpl 48 10 0 8 1 0 1 1 0 8 0 ppxss 1128 1 0 1 1 0 1 1 0 8 1 pffrag 232 5 0 5 2 1 1 1 0 482 1 pffrnode 88 5 0 5 2 1 1 1 0 8 1 pffrent 40 13 0 13 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 32 0 30 1 0 1 1 0 8 0 pfstkey 112 32 0 30 1 0 1 1 0 8 0 pfstate 320 32 0 30 3 2 1 2 0 8 0 pfrule 1360 43 0 37 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 944 0 753 17 5 12 13 0 8 0 art_table 32 945 0 753 2 0 2 2 0 8 0 art_node 16 202 0 162 1 0 1 1 0 8 0 sysvmsgpl 40 40 0 11 2 1 1 1 0 8 0 semupl 112 9 0 9 1 1 0 1 0 8 0 semapl 112 295 0 285 1 0 1 1 0 8 0 shmpl 112 95 0 40 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 9019 0 7615 92 3 89 89 0 8 0 ffsino 272 9019 0 7615 95 0 95 95 0 8 0 nchpl 144 16133 0 14539 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 39150 0 39150 2 1 1 1 0 8 1 percpumem 16 48 0 15 1 0 1 1 0 8 0 vcpupl 1984 24 0 0 3 0 3 3 0 8 0 vmpool 560 42 0 18 2 0 2 2 0 8 0 scsiplug 72 5 0 5 1 1 0 1 0 8 0 scxspl 216 47706 0 47706 9 8 1 7 0 8 1 plimitpl 152 102 0 94 1 0 1 1 0 8 0 sigapl 424 6697 0 6644 7 0 7 7 0 8 1 futexpl 56 38748 0 38748 1 0 1 1 0 8 1 knotepl 112 357 0 337 1 0 1 1 0 8 0 kqueuepl 168 3652 0 3648 1 0 1 1 0 8 0 pipepl 336 264 0 253 13 11 2 2 0 8 0 fdescpl 496 6660 0 6644 3 0 3 3 0 8 0 filepl 152 19461 0 19358 8 3 5 6 0 8 1 lockfpl 104 459 0 458 1 0 1 1 0 8 0 lockfspl 48 155 0 154 1 0 1 1 0 8 0 sessionpl 144 26 0 15 1 0 1 1 0 8 0 pgrppl 48 41 0 30 1 0 1 1 0 8 0 ucredpl 96 1668 0 1659 1 0 1 1 0 8 0 zombiepl 144 6644 0 6643 2 1 1 1 0 8 0 processpl 1080 6697 0 6643 4 0 4 4 0 8 0 procpl 672 14738 0 14676 6 0 6 6 0 8 0 srpgc 96 2 0 2 1 1 0 1 0 8 0 sosppl 168 53 0 53 9 9 0 1 0 8 0 sockpl 432 3444 0 3423 13 9 4 6 0 8 0 mcl64k 65536 18 0 0 3 0 3 3 0 8 0 mcl12k 12288 15 0 0 2 0 2 2 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 15 0 0 2 0 2 2 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 308 0 0 17 0 17 17 0 8 0 mtagpl 96 211 0 0 4 0 4 4 0 8 0 mbufpl 256 764 0 0 38 0 38 38 0 8 0 bufpl 280 11121 0 4861 448 0 448 448 0 8 0 anonpl 24 483217 0 475429 111 53 58 68 0 186 5 amapchunkpl 152 25137 0 24926 34 20 14 21 0 158 5 amappl16 200 19865 0 19544 54 36 18 29 0 8 0 amappl15 192 3 0 2 1 0 1 1 0 8 0 amappl14 184 4 0 2 1 0 1 1 0 8 0 amappl13 176 962 0 960 1 0 1 1 0 8 0 amappl12 168 38 0 27 1 0 1 1 0 8 0 amappl11 160 3534 0 3519 1 0 1 1 0 8 0 amappl10 152 421 0 412 1 0 1 1 0 8 0 amappl9 144 1570 0 1569 2 1 1 1 0 8 0 amappl8 136 673 0 577 4 0 4 4 0 8 0 amappl7 128 1652 0 1643 1 0 1 1 0 8 0 amappl6 120 508 0 491 1 0 1 1 0 8 0 amappl5 112 8185 0 8172 1 0 1 1 0 8 0 amappl4 104 2848 0 2812 3 1 2 2 0 8 1 amappl3 96 1275 0 1265 1 0 1 1 0 8 0 amappl2 88 51829 0 51746 3 0 3 3 0 8 1 amappl1 80 196522 0 196038 26 14 12 21 0 8 0 amappl 88 15177 0 15091 3 0 3 3 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 97 0 40 1 0 1 1 0 8 0 uaddrrnd 24 6702 0 6662 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 6702 0 6662 1 0 1 1 0 8 0 vmmpekpl 168 33932 0 33899 2 0 2 2 0 8 0 vmmpepl 168 837821 0 836162 134 48 86 86 0 357 6 vmsppl 368 6701 0 6662 4 0 4 4 0 8 0 rwobjpl 56 175849 0 174728 37 20 17 20 0 8 0 pdppl 4096 13411 0 13348 83 16 67 67 0 8 4 pvpl 32 2296125 0 2285117 222 112 110 121 0 265 8 pmappl 232 6701 0 6662 4 1 3 3 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 397 0 58 11 1 10 10 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff826eaff0) 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 __mp_lock(ffffffff828cdaa0) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828cdaa0) at __mp_lock+0x129 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x1f __sanitizer_cov_trace_cmp8(ffff8000212a4010,ffff8000212a4088) at __sanitizer_cov_trace_cmp8+0x46 sys/dev/kcov.c:203 syscall(ffff8000234bd070) at syscall+0x3d9 mi_syscall sys/sys/syscall_mi.h:87 [inline] syscall(ffff8000234bd070) at syscall+0x3d9 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffafe0, count: -9 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x18: addq $0x8,%rsp ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 witness_checkorder(ffffffff8275f620,9,0) at witness_checkorder+0x108b rw_enter_write(ffffffff8275f610) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 uvn_get(fffffd80664ad648,0,ffff800024581498,ffff80002458147c,0,1) at uvn_get+0xeb uvm_vnode_lock sys/uvm/uvm_vnode.c:1501 [inline] uvn_get(fffffd80664ad648,0,ffff800024581498,ffff80002458147c,0,1) at uvn_get+0xeb sys/uvm/uvm_vnode.c:993 uvm_fault_lower(ffff800024581600,ffff800024581638,ffff800024581500,0) at uvm_fault_lower+0x5e7 sys/uvm/uvm_fault.c:1206 uvm_fault(fffffd806a5195d8,20000000,0,1) at uvm_fault+0x17c sys/uvm/uvm_fault.c:603 kpageflttrap(ffff800024581790,20000000) at kpageflttrap+0x202 sys/arch/amd64/amd64/trap.c:265 kerntrap(ffff800024581790) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:321 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyin() at copyin+0x53 sys_connect(ffff8000212a4fd0,ffff800024581958,ffff8000245819a0) at sys_connect+0x9b sys/kern/uipc_syscalls.c:362 syscall(ffff800024581a20) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800024581a20) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe3ce7984a10, count: -13