witness: lock order reversal: 1st 0xffffffff8290fe50 netlock (netlock) 2nd 0xfffffd8068e22760 vmmaplk (&map->lock) lock order "&map->lock"(rwlock) -> "netlock"(rwlock) first seen at: #0 rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 #1 udp_sysctl+0x8a sys/netinet/udp_usrreq.c:1269 #2 sys_sysctl+0x209 sys/kern/kern_sysctl.c:249 #3 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #3 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #4 Xsyscall+0x128 lock order "netlock"(rwlock) -> "&map->lock"(rwlock) first seen at: #0 rw_enter_read+0x66 sys/kern/kern_rwlock.c:112 #1 uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1758 #2 uvm_fault_check+0x3a sys/uvm/uvm_fault.c:674 #3 uvm_fault+0x102 sys/uvm/uvm_fault.c:602 #4 kpageflttrap+0x209 #5 kerntrap+0xef sys/arch/amd64/amd64/trap.c:318 #6 alltraps_kern_meltdown+0x7b #7 copyout+0x53 #8 soo_ioctl+0x26c #9 sys_ioctl+0x4a2 #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 Stopped at db_enter+0x18: addq $0x8,%rsp ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 witness_checkorder(fffffd8068e22760,1,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(fffffd8068e22760,1,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1105 rw_enter_read(fffffd8068e22750) at rw_enter_read+0x66 sys/kern/kern_rwlock.c:112 uvmfault_lookup(ffff80002e37f880,0) at uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1758 uvm_fault_check(ffff80002e37f880,ffff80002e37f8b8,ffff80002e37f8e0) at uvm_fault_check+0x3a sys/uvm/uvm_fault.c:674 uvm_fault(fffffd8068e22748,20ff9000,0,2) at uvm_fault+0x102 sys/uvm/uvm_fault.c:602 kpageflttrap(ffff80002e37fa10,20ff9000) at kpageflttrap+0x209 kerntrap(ffff80002e37fa10) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x53 soo_ioctl(fffffd805bd80268,c0286988,ffff80002e37fc30,ffff800026099510) at soo_ioctl+0x26c sys_ioctl(ffff800026099510,ffff80002e37fd48,ffff80002e37fda0) at sys_ioctl+0x4a2 syscall(ffff80002e37fe10) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e37fe10) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf5c367e6410, count: -14 ddb{0}> show registers rdi 0x3 rsi 0x40000 acpi_pdirpa+0x2be68 rbp 0xffff80002e37f570 rbx 0x3 rdx 0xffff800000bc2240 rcx 0 rax 0x3ffff acpi_pdirpa+0x2be67 r8 0xffff80002e37f4e0 r9 0x8080808080808080 r10 0x1cb7f83461b3cb39 r11 0xd989a07aa92131db r12 0xffffffff82ab0430 w_lodata+0x52ac0 r13 0 r14 0xffffffff82aa2410 w_lodata+0x44aa0 r15 0xfffffd8002f62d80 rip 0xffffffff8138d658 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002e37f560 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.0) pid=1658 stat=onproc flags process=10 proc=4000000 pri=32, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff800026098a90,0xffff8000ffff7280 process=0xffff800029725910 user=0xffff80002e37a000, vmspace=0xfffffd8068e22748 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 55093 381569 32993 32767 7 0x10 syz-executor.4 35924 41154 82893 32767 2 0x10 syz-executor.0 *35924 1658 82893 32767 7 0x4000010 syz-executor.0 99179 30480 73644 32767 2 0x10 syz-executor.2 99179 104484 73644 32767 3 0x4000090 fsleep syz-executor.2 99179 317849 73644 32767 2 0x4000010 syz-executor.2 99179 376398 73644 32767 3 0x4000090 fsleep syz-executor.2 61076 340457 29448 32767 2 0x10 syz-executor.6 61076 298302 29448 32767 3 0x4000090 fsleep syz-executor.6 61076 315928 29448 32767 3 0x4000090 fsleep syz-executor.6 62078 78147 43099 32767 2 0x10 syz-executor.7 62078 384959 43099 32767 3 0x4000090 fsleep syz-executor.7 37322 428839 41690 32767 2 0x10 syz-executor.3 37322 23122 41690 32767 3 0x4000090 fsleep syz-executor.3 37322 489031 41690 32767 3 0x4000090 fsleep syz-executor.3 32993 67361 33612 32767 3 0x90 nanoslp syz-executor.4 33612 84644 2094 0 3 0x82 wait syz-executor.4 43099 295755 4836 32767 3 0x90 nanoslp syz-executor.7 4836 469034 2094 0 3 0x82 wait syz-executor.7 23497 489321 0 0 3 0x14200 bored sosplice 41690 260526 7869 32767 3 0x90 nanoslp syz-executor.3 29448 216199 61862 32767 3 0x90 nanoslp syz-executor.6 61862 470844 2094 0 3 0x82 wait syz-executor.6 92444 114394 63571 32767 3 0x10 biowait syz-executor.5 63571 347257 2094 0 3 0x82 wait syz-executor.5 7869 439488 2094 0 3 0x82 wait syz-executor.3 73644 349036 71882 32767 3 0x90 nanoslp syz-executor.2 82018 308250 96013 32767 3 0x90 nanoslp syz-executor.1 82893 479781 18111 32767 3 0x90 nanoslp syz-executor.0 71882 418466 2094 0 3 0x82 wait syz-executor.2 96013 29771 2094 0 3 0x82 wait syz-executor.1 18111 97037 2094 0 3 0x82 wait syz-executor.0 2094 158433 99638 0 3 0x82 thrsleep syz-fuzzer 2094 439082 99638 0 3 0x4000082 nanoslp syz-fuzzer 2094 472563 99638 0 3 0x4000082 thrsleep syz-fuzzer 2094 226187 99638 0 3 0x4000082 thrsleep syz-fuzzer 2094 169213 99638 0 3 0x4000082 thrsleep syz-fuzzer 2094 29520 99638 0 3 0x4000082 thrsleep syz-fuzzer 2094 12074 99638 0 3 0x4000082 kqread syz-fuzzer 2094 67180 99638 0 3 0x4000082 thrsleep syz-fuzzer 2094 34553 99638 0 3 0x4000082 thrsleep syz-fuzzer 99638 49672 98404 0 3 0x10008a sigsusp ksh 98404 375558 26982 0 3 0x9a kqread sshd 20317 225752 1 0 3 0x100083 ttyin getty 26982 239122 1 0 3 0x88 kqread sshd 93291 471898 99497 73 3 0x1100090 kqread syslogd 99497 55554 1 0 3 0x100082 netio syslogd 96938 14549 1 0 3 0x100080 kqread resolvd 57090 176426 74178 77 3 0x100092 kqread dhcpleased 67903 347493 74178 77 3 0x100092 kqread dhcpleased 74178 286082 1 0 3 0x80 kqread dhcpleased 8104 81840 0 0 3 0x14200 bored smr 89460 121240 0 0 2 0x14200 zerothread 52238 207293 0 0 3 0x14200 aiodoned aiodoned 30164 487834 0 0 3 0x14200 syncer update 2875 328620 0 0 3 0x14200 cleaner cleaner 37456 186103 0 0 3 0x14200 reaper reaper 60309 137453 0 0 3 0x14200 pgdaemon pagedaemon 64528 497450 0 0 3 0x14200 bored viomb 22647 327457 0 0 3 0x40014200 acpi0 acpi0 70314 379941 0 0 3 0x40014200 idle1 59551 399894 0 0 3 0x14200 bored softnet 72104 418557 0 0 3 0x14200 bored systqmp 99721 456488 0 0 3 0x14200 bored systq 22453 220119 0 0 3 0x40014200 bored softclock 4895 516128 0 0 3 0x40014200 idle0 1 235929 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 35924 (syz-executor.0) thread 0xffff800026099510 (1658) shared rwlock netlock r = 0 (0xffffffff8290fe50) #0 witness_lock+0x44d #1 ifioctl_get+0x3f0 sys/net/if.c:2348 #2 soo_ioctl+0x26c #3 sys_ioctl+0x4a2 #4 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #4 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #5 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff829de988) #0 witness_lock+0x44d #1 soo_ioctl+0x25a sys/kern/sys_socket.c:136 #2 sys_ioctl+0x4a2 #3 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #3 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #4 Xsyscall+0x128 Process 92444 (syz-executor.5) thread 0xffff800022c4ea88 (114394) exclusive rrwlock inode r = 0 (0xfffffd806aa61d68) #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:677 #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 (0xfffffd8068fe4f78) #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 10195 6410K 6419K 78643K 11304 0 pcb 13 12K 14K 78643K 17 0 rtable 250 7K 7K 78643K 644 0 ifaddr 81 17K 17K 78643K 125 0 sysctl 3 1K 1K 78643K 3 0 counters 56 35K 35K 78643K 68 0 ioctlops 0 0K 2K 78643K 62 0 iov 0 0K 16K 78643K 462 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1271 79K 79K 78643K 1982 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 68 0 VM map 2 1K 1K 78643K 2 0 sem 8 1K 1K 78643K 8 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 24 89K 121K 78643K 7633 0 sigio 0 0K 0K 78643K 131 0 proc 56 74K 99K 78643K 1041 0 subproc 104 6K 6K 78643K 182 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 793 0 in_multi 99 6K 6K 78643K 442 0 ether_multi 1 0K 0K 78643K 211 0 mrt 2 0K 0K 78643K 2 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 187 837K 837K 78643K 187 0 exec 0 0K 2K 78643K 1262 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 391 89K 104K 78643K 97023 0 UVM aobj 131 4K 4K 78643K 132 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 100 0 NDP 11 0K 2K 78643K 45 0 temp 125 4707K 4771K 78643K 20802 0 kqueue 12 18K 26K 78643K 345 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 120 247 0 244 3 2 1 3 0 8 0 rtentry 112 203 0 87 4 0 4 4 0 8 0 unpcb 136 7398 0 7384 38 33 5 9 0 8 4 syncache 296 48 0 48 9 8 1 1 0 8 1 tcpqe 32 6 0 6 3 3 0 1 0 8 0 tcpcb 736 3720 0 3716 64 62 2 14 0 8 1 arp 120 30 0 12 1 0 1 1 0 8 0 ipq 40 2 0 2 2 2 0 1 0 8 0 ipqe 40 17 0 17 2 2 0 1 0 8 0 inpcb 304 6629 0 6589 46 40 6 12 0 8 2 rttmr 72 4 0 3 1 0 1 1 0 8 0 ip6q 72 9 0 7 3 2 1 1 0 8 0 ip6af 40 13 0 11 3 2 1 1 0 8 0 nd6 48 67 0 38 1 0 1 1 0 8 0 kcovpl 48 14 0 6 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 798 0 307 31 0 31 31 0 8 0 art_table 32 799 0 307 4 0 4 4 0 8 0 art_node 16 202 0 96 1 0 1 1 0 8 0 sysvmsgpl 40 91 0 82 1 0 1 1 0 8 0 semapl 112 6 0 0 1 0 1 1 0 8 0 shmpl 112 129 0 1 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 11707 0 10269 91 0 91 91 0 8 0 ffsino 272 11707 0 10269 97 0 97 97 0 8 0 nchpl 144 22638 0 21014 62 0 62 62 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 68116 0 68116 2 1 1 2 0 8 1 percpumem 16 46 0 6 1 0 1 1 0 8 0 scxspl 216 61556 0 61555 17 16 1 8 0 8 0 plimitpl 152 858 0 836 1 0 1 1 0 8 0 sigapl 424 7897 0 7846 7 1 6 7 0 8 0 futexpl 64 51125 0 51118 1 0 1 1 0 8 0 knotepl 120 459 0 0 11 0 11 11 0 8 0 kqueuepl 216 1842 0 1801 41 35 6 8 0 8 3 pipepl 336 1099 0 1071 30 27 3 8 0 8 0 fdescpl 496 7882 0 7847 7 2 5 6 0 8 0 filepl 152 46751 0 46449 74 60 14 21 0 8 2 lockfpl 104 466 0 464 1 0 1 1 0 8 0 lockfspl 48 144 0 142 1 0 1 1 0 8 0 sessionpl 144 29 0 13 1 0 1 1 0 8 0 pgrppl 48 41 0 25 1 0 1 1 0 8 0 ucredpl 96 4105 0 4087 1 0 1 1 0 8 0 zombiepl 144 7847 0 7846 1 0 1 1 0 8 0 processpl 1064 7897 0 7846 5 1 4 4 0 8 0 procpl 672 20389 0 20321 14 7 7 8 0 8 1 sosppl 168 57 0 57 10 9 1 1 0 8 1 sockpl 480 14393 0 14336 352 338 14 34 0 8 6 mcl64k 65536 18 0 0 3 0 3 3 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 14 0 0 1 0 1 1 0 8 0 mcl8k 8192 28 0 0 4 1 3 3 0 8 1 mcl4k 4096 25 0 0 4 1 3 3 0 8 0 mcl2k2 2112 8 0 0 1 0 1 1 0 8 0 mcl2k 2048 234 0 0 21 0 21 21 0 8 0 mtagpl 96 1 0 0 1 0 1 1 0 8 0 mbufpl 256 580 0 0 33 0 33 33 0 8 0 bufpl 288 13981 0 7647 453 0 453 453 0 8 0 anonpl 24 2145303 0 2130725 178 74 104 131 0 186 0 amapchunkpl 152 244848 0 244048 107 70 37 52 0 158 4 amappl16 200 20716 0 20322 105 83 22 42 0 8 1 amappl15 192 3596 0 3588 1 0 1 1 0 8 0 amappl14 184 13 0 8 1 0 1 1 0 8 0 amappl13 176 1075 0 1070 1 0 1 1 0 8 0 amappl12 168 905 0 903 1 0 1 1 0 8 0 amappl11 160 1277 0 1263 1 0 1 1 0 8 0 amappl10 152 41 0 38 1 0 1 1 0 8 0 amappl9 144 470 0 467 1 0 1 1 0 8 0 amappl8 136 1836 0 1720 5 0 5 5 0 8 0 amappl7 128 1030 0 1014 1 0 1 1 0 8 0 amappl6 120 233 0 203 2 1 1 2 0 8 0 amappl5 112 6991 0 6969 1 0 1 1 0 8 0 amappl4 104 2291 0 2259 2 0 2 2 0 8 0 amappl3 96 1436 0 1421 1 0 1 1 0 8 0 amappl2 88 2696 0 2643 3 1 2 3 0 8 0 amappl1 80 137854 0 137222 18 3 15 18 0 8 0 amappl 88 96108 0 95834 7 0 7 7 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 7882 0 7847 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 7882 0 7847 1 0 1 1 0 8 0 vmmpekpl 168 55576 0 55524 3 0 3 3 0 8 0 vmmpepl 168 704485 0 701790 183 57 126 144 0 357 1 vmsppl 368 7881 0 7847 4 0 4 4 0 8 0 rwobjpl 56 170816 0 163369 118 10 108 112 0 8 0 pdppl 4096 15771 0 15694 199 118 81 93 0 8 4 pvpl 32 3555983 0 3536064 356 184 172 254 0 265 0 pmappl 248 7881 0 7847 4 1 3 3 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1046 0 212 25 0 25 25 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:440 witness_checkorder(fffffd8068e22760,1,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(fffffd8068e22760,1,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1105 rw_enter_read(fffffd8068e22750) at rw_enter_read+0x66 sys/kern/kern_rwlock.c:112 uvmfault_lookup(ffff80002e37f880,0) at uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1758 uvm_fault_check(ffff80002e37f880,ffff80002e37f8b8,ffff80002e37f8e0) at uvm_fault_check+0x3a sys/uvm/uvm_fault.c:674 uvm_fault(fffffd8068e22748,20ff9000,0,2) at uvm_fault+0x102 sys/uvm/uvm_fault.c:602 kpageflttrap(ffff80002e37fa10,20ff9000) at kpageflttrap+0x209 kerntrap(ffff80002e37fa10) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x53 soo_ioctl(fffffd805bd80268,c0286988,ffff80002e37fc30,ffff800026099510) at soo_ioctl+0x26c sys_ioctl(ffff800026099510,ffff80002e37fd48,ffff80002e37fda0) at sys_ioctl+0x4a2 syscall(ffff80002e37fe10) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e37fe10) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf5c367e6410, count: -14 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp 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 __mp_lock(ffffffff829de780) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff829de780) at __mp_lock+0x122 sys/kern/kern_lock.c:147 syscall(ffff80002e373b40) at syscall+0x3ef mi_syscall sys/sys/syscall_mi.h:93 [inline] syscall(ffff80002e373b40) at syscall+0x3ef sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffee1b0, count: -6