witness: lock order reversal: 1st 0xfffffd806b307d60 inode (&ip->i_lock) 2nd 0xffffffff8277e670 netlock (netlock) lock order "netlock"(rwlock) -> "&ip->i_lock"(rrwlock) first seen at: #0 witness_checkorder+0x65e witness_lock_order_add sys/kern/subr_witness.c:2463 [inline] #0 witness_checkorder+0x65e sys/kern/subr_witness.c:880 #1 rw_enter+0xd4 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:614 #4 vn_lock+0x6c sys/kern/vfs_vnops.c:575 #5 vget+0x1c6 sys/kern/vfs_subr.c:671 #6 ktrwriteraw+0x138 sys/kern/kern_ktrace.c:659 #7 ktrstruct+0x169 ktrwrite2 sys/kern/kern_ktrace.c:627 [inline] #7 ktrstruct+0x169 sys/kern/kern_ktrace.c:311 #8 sys_connect+0x246 #9 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #9 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 #10 Xsyscall+0x128 lock order "&ip->i_lock"(rrwlock) -> "netlock"(rwlock) first seen at: #0 witness_checkorder+0x65e witness_lock_order_add sys/kern/subr_witness.c:2463 [inline] #0 witness_checkorder+0x65e sys/kern/subr_witness.c:880 #1 rw_enter_write+0x5b sys/kern/kern_rwlock.c:127 #2 uvn_get+0xeb uvm_vnode_lock sys/uvm/uvm_vnode.c:1501 [inline] #2 uvn_get+0xeb sys/uvm/uvm_vnode.c:993 #3 uvm_fault+0xa41 sys/uvm/uvm_fault.c:1073 #4 kpageflttrap+0x202 sys/arch/amd64/amd64/trap.c:265 #5 kerntrap+0xef sys/arch/amd64/amd64/trap.c:321 #6 alltraps_kern_meltdown+0x7b #7 copyin+0x53 #8 sys_connect+0x9b sys/kern/uipc_syscalls.c:362 #9 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #9 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 #10 Xsyscall+0x128 Stopped at db_enter+0x18: addq $0x8,%rsp ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic the kernel did not panic ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 witness_checkorder(ffffffff8277e670,9,0) at witness_checkorder+0xf5a witness_debugger sys/kern/subr_witness.c:2490 [inline] witness_checkorder(ffffffff8277e670,9,0) at witness_checkorder+0xf5a sys/kern/subr_witness.c:1087 rw_enter_write(ffffffff8277e660) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:127 uvn_get(fffffd807825b8d0,0,ffff8000233712b8,ffff800023371254,0,1) at uvn_get+0xeb uvm_vnode_lock sys/uvm/uvm_vnode.c:1501 [inline] uvn_get(fffffd807825b8d0,0,ffff8000233712b8,ffff800023371254,0,1) at uvn_get+0xeb sys/uvm/uvm_vnode.c:993 uvm_fault(fffffd806a6c25d0,20000000,0,1) at uvm_fault+0xa41 sys/uvm/uvm_fault.c:1073 kpageflttrap(ffff8000233713e0,20000000) at kpageflttrap+0x202 sys/arch/amd64/amd64/trap.c:265 kerntrap(ffff8000233713e0) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:321 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyin() at copyin+0x53 sys_connect(ffff8000212a74a8,ffff8000233715a8,ffff8000233715f0) at sys_connect+0x9b sys/kern/uipc_syscalls.c:362 syscall(ffff800023371670) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023371670) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x28557d67cc0, count: -12 ddb{1}> show registers rdi 0x3 rsi 0x40000 acpi_pdirpa+0x2be68 rbp 0xffff800023370f20 rbx 0x3 rdx 0xffff800000b07940 rcx 0x3 rax 0x3ffff acpi_pdirpa+0x2be67 r8 0xffffffff81e34c43 witness_checkorder+0xf33 r9 0x5 r10 0x97b1174a3ac9b547 r11 0xba964b82c022833b r12 0xffffffff82847c20 w_lodata+0x4b060 r13 0 r14 0xffffffff82842c60 w_lodata+0x460a0 r15 0xfffffd8002c975c0 rip 0xffffffff82243a18 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800023370f10 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.1) pid=111695 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000212a6028,0xffffffff828e9418 process=0xffff800021290018 user=0xffff80002336c000, vmspace=0xfffffd806a6c25d0 estcpu=1, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 17921 122322 75179 0 7 0 syz-executor.1 *17921 111695 75179 0 7 0x4000000 syz-executor.1 90971 298475 18091 0 3 0x80 nanosleep syz-executor.0 90971 257919 18091 0 3 0x4000080 fsleep syz-executor.0 33716 293652 0 0 3 0x14200 acct acct 61284 122279 0 0 3 0x14280 nfsidl nfsio 20881 404431 0 0 3 0x14280 nfsidl nfsio 26322 251711 0 0 3 0x14280 nfsidl nfsio 33999 180386 0 0 3 0x14280 nfsidl nfsio 79739 464481 0 0 3 0x14280 nfsidl nfsio 45959 83118 0 0 3 0x14280 nfsidl nfsio 17546 445765 0 0 3 0x14280 nfsidl nfsio 50356 387334 0 0 3 0x14280 nfsidl nfsio 45041 176511 0 0 3 0x14280 nfsidl nfsio 10264 226889 0 0 3 0x14280 nfsidl nfsio 70665 441493 0 0 3 0x14280 nfsidl nfsio 24969 318709 0 0 3 0x14280 nfsidl nfsio 49512 147723 0 0 3 0x14280 nfsidl nfsio 38793 374085 0 0 3 0x14280 nfsidl nfsio 29722 404966 0 0 3 0x14280 nfsidl nfsio 92291 204914 0 0 3 0x14280 nfsidl nfsio 77260 307514 0 0 3 0x14280 nfsidl nfsio 6010 425504 0 0 3 0x14280 nfsidl nfsio 72970 435868 0 0 3 0x14280 nfsidl nfsio 27238 485801 0 0 3 0x14280 nfsidl nfsio 75179 160652 26906 0 3 0x82 nanosleep syz-executor.1 18091 180005 26906 0 3 0x82 nanosleep syz-executor.0 73031 44876 0 0 3 0x14200 bored sosplice 26906 414231 16862 0 3 0x82 kqread syz-fuzzer 26906 319895 16862 0 3 0x4000082 nanosleep syz-fuzzer 26906 410446 16862 0 3 0x4000082 thrsleep syz-fuzzer 26906 491172 16862 0 3 0x4000082 thrsleep syz-fuzzer 26906 360445 16862 0 3 0x4000082 thrsleep syz-fuzzer 26906 322116 16862 0 3 0x4000082 nanosleep syz-fuzzer 26906 79470 16862 0 3 0x4000082 thrsleep syz-fuzzer 26906 84400 16862 0 3 0x4000082 thrsleep syz-fuzzer 16862 98409 41801 0 3 0x10008a pause ksh 41801 182243 32614 0 3 0x92 select sshd 84771 228424 1 0 3 0x100083 ttyin getty 32614 24321 1 0 3 0x80 select sshd 57309 45718 85352 74 3 0x100092 bpf pflogd 85352 221427 1 0 3 0x80 netio pflogd 20803 123210 33469 73 3 0x100090 kqread syslogd 33469 216534 1 0 3 0x100082 netio syslogd 51472 357441 1 77 3 0x100090 poll dhclient 89392 245050 1 0 3 0x80 poll dhclient 27034 260723 0 0 3 0x14200 bored smr 5953 379689 0 0 3 0x14200 pgzero zerothread 65366 125189 0 0 3 0x14200 aiodoned aiodoned 16004 478953 0 0 3 0x14200 syncer update 34678 123005 0 0 3 0x14200 cleaner cleaner 41294 241048 0 0 3 0x14200 reaper reaper 96248 68924 0 0 3 0x14200 pgdaemon pagedaemon 26566 187869 0 0 3 0x14200 bored crynlk 79527 306327 0 0 3 0x14200 bored crypto 38448 115700 0 0 3 0x14200 bored viomb 8045 8548 0 0 3 0x40014200 acpi0 acpi0 55142 321065 0 0 3 0x40014200 idle1 66512 177945 0 0 3 0x14200 bored softnet 38329 400327 0 0 3 0x14200 bored systqmp 77227 339049 0 0 3 0x14200 bored systq 33094 314178 0 0 3 0x40014200 bored softclock 93942 267046 0 0 3 0x40014200 idle0 1 260557 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 17921 (syz-executor.1) thread 0xffff8000212a74a8 (111695) exclusive rrwlock inode r = 0 (0xfffffd806b307d60) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1164 #1 rw_enter+0x446 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #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+0xa41 sys/uvm/uvm_fault.c:1073 #7 kpageflttrap+0x202 sys/arch/amd64/amd64/trap.c:265 #8 kerntrap+0xef sys/arch/amd64/amd64/trap.c:321 #9 alltraps_kern_meltdown+0x7b #10 copyin+0x53 #11 sys_connect+0x9b sys/kern/uipc_syscalls.c:362 #12 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #12 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 #13 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff828cea78) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1164 #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 9556 6452K 7210K 78643K 13942 0 pcb 13 8K 8K 78643K 186 0 rtable 106 3K 5K 78643K 768 0 ifaddr 82 16K 16K 78643K 371 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 165 0 ioctlops 0 0K 4K 78643K 1602 0 iov 0 0K 24K 78643K 132 0 mount 1 1K 1K 78643K 1 0 vnodes 1227 77K 77K 78643K 2332 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 13 0 VM map 2 1K 1K 78643K 2 0 sem 11 1K 1K 78643K 17 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1825 197K 290K 78643K 13109 0 file desc 6 17K 25K 78643K 3040 0 sigio 0 0K 0K 78643K 8 0 proc 64 63K 83K 78643K 733 0 subproc 32 2K 2K 78643K 68 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 183 0 in_multi 33 2K 2K 78643K 151 0 ether_multi 1 0K 0K 78643K 38 0 mrt 0 0K 0K 78643K 37 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 73 334K 334K 78643K 73 0 exec 0 0K 2K 78643K 456 0 pfkey data 0 0K 1K 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 185 208K 208K 78643K 7662 0 UVM aobj 39 7K 7K 78643K 39 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 211 0 NDP 15 0K 0K 78643K 84 0 temp 145 3968K 4033K 78643K 23115 0 kqueue 3 4K 10K 78643K 167 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 10 0 4 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 120 80 0 78 1 0 1 1 0 8 0 rtentry 112 83 0 39 2 0 2 2 0 8 0 unpcb 120 716 0 706 1 0 1 1 0 8 0 syncache 296 33 0 33 4 4 0 1 0 8 0 tcpqe 32 185 0 185 2 2 0 1 0 8 0 tcpcb 736 591 0 585 13 12 1 6 0 8 0 inpcb 296 1392 0 1384 3 2 1 2 0 8 0 rttmr 72 16 0 16 2 2 0 1 0 8 0 nd6 48 12 0 6 1 0 1 1 0 8 0 pkpcb 40 10 0 10 2 2 0 1 0 8 0 kcovpl 48 4 0 2 1 0 1 1 0 8 0 swfcl 56 15 0 0 1 0 1 1 0 8 0 ppxss 1128 7 0 7 1 1 0 1 0 8 0 pffrent 40 5 0 5 1 1 0 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 24 0 24 1 1 0 1 0 8 0 pfstitem 24 13 0 11 1 0 1 1 0 8 0 pfstkey 112 13 0 11 1 0 1 1 0 8 0 pfstate 328 13 0 11 2 1 1 2 0 8 0 pfrule 1360 67 0 52 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 282 0 88 13 0 13 13 0 8 0 art_table 32 283 0 88 2 0 2 2 0 8 0 art_node 16 82 0 42 1 0 1 1 0 8 0 sysvmsgpl 40 30 0 11 1 0 1 1 0 8 0 semupl 112 7 0 7 2 2 0 1 0 8 0 semapl 112 9 0 0 1 0 1 1 0 8 0 shmpl 112 36 0 0 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 5409 0 3999 89 0 89 89 0 8 0 ffsino 272 5409 0 3999 95 0 95 95 0 8 0 nchpl 144 9085 0 7493 60 0 60 60 0 8 0 uvmvnodes 72 5926 0 0 108 0 108 108 0 8 0 vnodes 208 5926 0 0 312 0 312 312 0 8 0 namei 1024 22456 0 22456 2 1 1 1 0 8 1 percpumem 16 93 0 61 1 0 1 1 0 8 0 vcpupl 1984 12 0 0 2 0 2 2 0 8 0 vmpool 560 12 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 8 0 8 1 1 0 1 0 8 0 scxspl 216 26137 0 26137 9 8 1 8 0 8 1 plimitpl 152 192 0 183 1 0 1 1 0 8 0 sigapl 424 3272 0 3217 7 0 7 7 0 8 0 futexpl 56 20672 0 20671 2 1 1 1 0 8 0 knotepl 112 230 0 210 1 0 1 1 0 8 0 kqueuepl 152 1315 0 1312 1 0 1 1 0 8 0 pipepl 304 203 0 192 7 6 1 2 0 8 0 fdescpl 496 3234 0 3217 3 0 3 3 0 8 0 filepl 152 10999 0 10892 6 1 5 6 0 8 0 lockfpl 104 318 0 317 1 0 1 1 0 8 0 lockfspl 48 145 0 144 1 0 1 1 0 8 0 sessionpl 144 20 0 9 1 0 1 1 0 8 0 pgrppl 48 63 0 52 1 0 1 1 0 8 0 ucredpl 96 1472 0 1463 1 0 1 1 0 8 0 zombiepl 144 3217 0 3217 1 0 1 1 0 8 1 processpl 1056 3272 0 3217 4 0 4 4 0 8 0 procpl 656 6873 0 6809 6 0 6 6 0 8 0 sosppl 168 20 0 20 1 1 0 1 0 8 0 sockpl 400 2198 0 2178 7 4 3 5 0 8 0 mcl64k 65536 10 0 0 2 0 2 2 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 8 0 0 1 0 1 1 0 8 0 mcl4k 4096 15 0 0 2 0 2 2 0 8 0 mcl2k 2048 191 0 0 16 0 16 16 0 8 0 mtagpl 96 165 0 0 4 0 4 4 0 8 0 mbufpl 256 646 0 0 37 0 37 37 0 8 0 bufpl 280 7260 0 1011 447 0 447 447 0 8 0 anonpl 16 219224 0 212300 31 1 30 30 0 124 0 amapchunkpl 152 11830 0 11654 10 2 8 9 0 158 0 amappl16 192 9350 0 9091 15 0 15 15 0 8 1 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 581 0 576 1 0 1 1 0 8 0 amappl13 168 732 0 728 1 0 1 1 0 8 0 amappl12 160 9 0 6 1 0 1 1 0 8 0 amappl11 152 60 0 45 1 0 1 1 0 8 0 amappl10 144 846 0 843 1 0 1 1 0 8 0 amappl9 136 1086 0 1082 1 0 1 1 0 8 0 amappl8 128 246 0 178 3 0 3 3 0 8 0 amappl7 120 1196 0 1188 1 0 1 1 0 8 0 amappl6 112 908 0 893 1 0 1 1 0 8 0 amappl5 104 3801 0 3782 1 0 1 1 0 8 0 amappl4 96 308 0 282 1 0 1 1 0 8 0 amappl3 88 870 0 862 1 0 1 1 0 8 0 amappl2 80 22609 0 22525 3 1 2 3 0 8 0 amappl1 72 99700 0 99197 24 14 10 19 0 8 0 amappl 80 7171 0 7093 2 0 2 2 0 84 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 38 0 0 1 0 1 1 0 8 0 uaddrrnd 24 3246 0 3217 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3246 0 3217 1 0 1 1 0 8 0 vmmpekpl 168 18926 0 18889 2 0 2 2 0 8 0 vmmpepl 168 405685 0 404031 93 18 75 75 0 357 2 vmsppl 368 3245 0 3217 3 0 3 3 0 8 0 pdppl 4096 6499 0 6446 71 18 53 53 0 8 0 pvpl 32 967206 0 956914 146 50 96 114 0 265 11 pmappl 232 3245 0 3217 3 1 2 2 0 8 0 extentpl 40 57 0 39 1 0 1 1 0 8 0 phpool 112 362 0 38 10 0 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(ffffffff8272eff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x3e kd_curproc sys/dev/kcov.c:571 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x3e sys/dev/kcov.c:143 __mp_lock(ffffffff828ce870) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828ce870) at __mp_lock+0x133 sys/kern/kern_lock.c:147 intr_handler(ffff80002336ac50,ffff80000065a300) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge4_untramp() at Xintr_ioapic_edge4_untramp+0x19f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x37 kd_curproc sys/dev/kcov.c:570 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x37 sys/dev/kcov.c:143 __mp_lock(ffffffff828ce870) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828ce870) at __mp_lock+0x133 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_pc() at __sanitizer_cov_trace_pc+0x19 sys/dev/kcov.c:143 syscall(ffff80002336af50) at syscall+0x2f3 mi_syscall sys/sys/syscall_mi.h:73 [inline] syscall(ffff80002336af50) at syscall+0x2f3 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe0230, count: -14 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(ffffffff8277e670,9,0) at witness_checkorder+0xf5a witness_debugger sys/kern/subr_witness.c:2490 [inline] witness_checkorder(ffffffff8277e670,9,0) at witness_checkorder+0xf5a sys/kern/subr_witness.c:1087 rw_enter_write(ffffffff8277e660) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:127 uvn_get(fffffd807825b8d0,0,ffff8000233712b8,ffff800023371254,0,1) at uvn_get+0xeb uvm_vnode_lock sys/uvm/uvm_vnode.c:1501 [inline] uvn_get(fffffd807825b8d0,0,ffff8000233712b8,ffff800023371254,0,1) at uvn_get+0xeb sys/uvm/uvm_vnode.c:993 uvm_fault(fffffd806a6c25d0,20000000,0,1) at uvm_fault+0xa41 sys/uvm/uvm_fault.c:1073 kpageflttrap(ffff8000233713e0,20000000) at kpageflttrap+0x202 sys/arch/amd64/amd64/trap.c:265 kerntrap(ffff8000233713e0) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:321 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyin() at copyin+0x53 sys_connect(ffff8000212a74a8,ffff8000233715a8,ffff8000233715f0) at sys_connect+0x9b sys/kern/uipc_syscalls.c:362 syscall(ffff800023371670) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023371670) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x28557d67cc0, count: -12