witness: lock order reversal: 1st 0xffffffff8290fe50 netlock (netlock) 2nd 0xfffffd806870d1a0 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(fffffd806870d1a0,1,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(fffffd806870d1a0,1,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1105 rw_enter_read(fffffd806870d190) at rw_enter_read+0x66 sys/kern/kern_rwlock.c:112 uvmfault_lookup(ffff80002e37df10,0) at uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1758 uvm_fault_check(ffff80002e37df10,ffff80002e37df48,ffff80002e37df70) at uvm_fault_check+0x3a sys/uvm/uvm_fault.c:674 uvm_fault(fffffd806870d188,20ff9000,0,2) at uvm_fault+0x102 sys/uvm/uvm_fault.c:602 kpageflttrap(ffff80002e37e0a0,20ff9000) at kpageflttrap+0x209 kerntrap(ffff80002e37e0a0) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x53 soo_ioctl(fffffd8068242ab8,c0286988,ffff80002e37e2c0,ffff8000ffff4d20) at soo_ioctl+0x26c sys_ioctl(ffff8000ffff4d20,ffff80002e37e3d8,ffff80002e37e430) at sys_ioctl+0x4a2 syscall(ffff80002e37e4a0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e37e4a0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x28b1b926850, count: -14 ddb{0}> show registers rdi 0x3 rsi 0xffffffff8294abb0 __sancov_gen_cov_switch_values.134 rbp 0xffff80002e37dc00 rbx 0x3 rdx 0 rcx 0 rax 0xffff8000ffff4d20 r8 0xffff80002e37db70 r9 0x8080808080808080 r10 0x41162a8836ccf16f r11 0xfc82fbe34a7136d4 r12 0xffffffff82ab04e0 w_lodata+0x52b70 r13 0 r14 0xffffffff82aa6da0 w_lodata+0x49430 r15 0xfffffd8002f62d80 rip 0xffffffff8138d658 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002e37dbf0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.1) pid=301028 stat=onproc flags process=10 proc=4000000 pri=32, usrpri=75, nice=20 forw=0xffffffffffffffff, list=0xffff8000268bd7a8,0xffff8000ffff4550 process=0xffff8000fffec870 user=0xffff80002e379000, vmspace=0xfffffd806870d188 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 73062 389022 10182 32767 2 0x10 syz-executor.4 73062 120176 10182 32767 3 0x4000090 fsleep syz-executor.4 31367 262678 72380 32767 2 0x10 syz-executor.3 31367 428210 72380 32767 3 0x4000090 fsleep syz-executor.3 90476 56550 78344 32767 2 0x10 syz-executor.2 49142 229122 90813 32767 2 0x10 syz-executor.0 23805 174363 89490 32767 7 0x10 syz-executor.1 *23805 301028 89490 32767 7 0x4000010 syz-executor.1 23805 163644 89490 32767 2 0x4000010 syz-executor.1 90813 183209 84281 32767 3 0x90 nanoslp syz-executor.0 84281 204626 95470 0 3 0x82 wait syz-executor.0 72818 254098 22671 32767 3 0x90 nanoslp syz-executor.5 22671 441059 95470 0 3 0x82 wait syz-executor.5 23690 273871 0 0 3 0x14200 bored sosplice 64149 492852 3324 32767 3 0x90 nanoslp syz-executor.6 55460 216010 23299 32767 3 0x10 biowait syz-executor.7 3324 354118 95470 0 3 0x82 wait syz-executor.6 10182 285661 43721 32767 3 0x90 nanoslp syz-executor.4 23299 703 95470 0 3 0x82 wait syz-executor.7 43721 130821 95470 0 3 0x82 wait syz-executor.4 72380 521234 2293 32767 3 0x90 nanoslp syz-executor.3 78344 338470 32701 32767 3 0x90 nanoslp syz-executor.2 89490 450873 84871 32767 3 0x90 nanoslp syz-executor.1 32701 81407 95470 0 3 0x82 wait syz-executor.2 2293 109539 95470 0 3 0x82 wait syz-executor.3 84871 299774 95470 0 3 0x82 wait syz-executor.1 95470 392368 71879 0 3 0x82 thrsleep syz-fuzzer 95470 312679 71879 0 3 0x4000082 nanoslp syz-fuzzer 95470 362007 71879 0 3 0x4000082 thrsleep syz-fuzzer 95470 405891 71879 0 3 0x4000082 thrsleep syz-fuzzer 95470 289074 71879 0 3 0x4000082 thrsleep syz-fuzzer 95470 381620 71879 0 3 0x4000082 thrsleep syz-fuzzer 95470 487418 71879 0 3 0x4000082 kqread syz-fuzzer 95470 198595 71879 0 3 0x4000082 thrsleep syz-fuzzer 95470 419434 71879 0 3 0x4000082 thrsleep syz-fuzzer 71879 388926 9796 0 3 0x10008a sigsusp ksh 9796 226725 34017 0 3 0x9a kqread sshd 80409 370766 1 0 3 0x100083 ttyin getty 34017 381402 1 0 3 0x88 kqread sshd 27503 231896 57956 73 3 0x1100090 kqread syslogd 57956 508002 1 0 3 0x100082 netio syslogd 68104 76242 1 0 3 0x100080 kqread resolvd 9251 216611 45039 77 3 0x100092 kqread dhcpleased 79184 489924 45039 77 3 0x100092 kqread dhcpleased 45039 397731 1 0 3 0x80 kqread dhcpleased 18457 195054 0 0 3 0x14200 bored smr 76276 482389 0 0 2 0x14200 zerothread 59087 40487 0 0 3 0x14200 aiodoned aiodoned 17895 183547 0 0 3 0x14200 syncer update 46795 28895 0 0 3 0x14200 cleaner cleaner 77668 478132 0 0 3 0x14200 reaper reaper 21007 347424 0 0 3 0x14200 pgdaemon pagedaemon 30224 335434 0 0 3 0x14200 bored viomb 6306 232651 0 0 3 0x40014200 acpi0 acpi0 67618 365704 0 0 3 0x40014200 idle1 71281 209166 0 0 3 0x14200 bored softnet 56109 74699 0 0 3 0x14200 bored systqmp 53408 121645 0 0 3 0x14200 bored systq 54976 314847 0 0 3 0x40014200 bored softclock 18394 450267 0 0 3 0x40014200 idle0 1 378619 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 23805 (syz-executor.1) thread 0xffff8000ffff4d20 (301028) 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 55460 (syz-executor.7) thread 0xffff8000268bda48 (216010) exclusive rrwlock inode r = 0 (0xfffffd8068ebc1a8) #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 (0xfffffd80670111b0) #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 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10174 6407K 6419K 78643K 11279 0 pcb 13 10K 12K 78643K 15 0 rtable 248 7K 7K 78643K 715 0 ifaddr 81 17K 17K 78643K 118 0 sysctl 2 0K 0K 78643K 2 0 counters 56 35K 35K 78643K 66 0 ioctlops 0 0K 2K 78643K 38 0 iov 0 0K 14K 78643K 315 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1270 79K 79K 78643K 1778 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 16 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 335 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 23 85K 109K 78643K 1902 0 sigio 0 0K 0K 78643K 111 0 proc 56 74K 99K 78643K 761 0 subproc 104 6K 6K 78643K 169 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 71 0 in_multi 99 6K 6K 78643K 174 0 ether_multi 1 0K 0K 78643K 1 0 mrt 1 0K 0K 78643K 1 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 904 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 316 81K 98K 78643K 25632 0 UVM aobj 40 2K 2K 78643K 49 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 41 0 NDP 11 0K 2K 78643K 42 0 temp 125 4707K 4787K 78643K 8813 0 kqueue 13 20K 30K 78643K 593 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 120 225 0 222 3 2 1 3 0 8 0 rtentry 112 172 0 57 4 0 4 4 0 8 0 unpcb 136 4983 0 4967 21 18 3 9 0 8 2 syncache 296 34 0 34 6 5 1 1 0 8 1 tcpqe 32 48 0 48 4 4 0 1 0 8 0 tcpcb 736 688 0 676 28 20 8 11 0 8 4 arp 120 28 0 10 1 0 1 1 0 8 0 ipq 40 2 0 2 1 1 0 1 0 8 0 ipqe 40 5 0 5 1 1 0 1 0 8 0 inpcb 304 1580 0 1565 23 16 7 9 0 8 4 ip6q 72 7 0 7 1 1 0 1 0 8 0 ip6af 40 16 0 16 1 1 0 1 0 8 0 nd6 48 45 0 16 1 0 1 1 0 8 0 kcovpl 48 13 0 5 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 726 0 222 32 0 32 32 0 8 0 art_table 32 727 0 222 5 0 5 5 0 8 0 art_node 16 171 0 66 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 1 1 0 1 1 0 8 0 semapl 112 331 0 321 1 0 1 1 0 8 0 shmpl 112 46 0 9 3 1 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 3981 0 2546 91 0 91 91 0 8 0 ffsino 272 3981 0 2546 97 0 97 97 0 8 0 nchpl 144 6656 0 5031 62 0 62 62 0 8 0 uvmvnodes 80 4159 0 0 85 0 85 85 0 8 0 vnodes 224 4159 0 0 245 0 245 245 0 8 0 namei 1024 22166 0 22165 2 1 1 2 0 8 0 percpumem 16 45 0 5 1 0 1 1 0 8 0 scxspl 216 18345 0 18344 13 10 3 8 0 8 2 plimitpl 152 222 0 200 1 0 1 1 0 8 0 sigapl 424 2174 0 2123 7 1 6 7 0 8 0 futexpl 64 16751 0 16749 1 0 1 1 0 8 0 knotepl 120 234 0 0 7 0 7 7 0 8 0 kqueuepl 216 965 0 955 13 10 3 5 0 8 2 pipepl 336 444 0 416 14 11 3 8 0 8 0 fdescpl 496 2159 0 2125 7 2 5 6 0 8 0 filepl 152 16470 0 16230 35 21 14 18 0 8 4 lockfpl 104 194 0 191 1 0 1 1 0 8 0 lockfspl 48 80 0 77 1 0 1 1 0 8 0 sessionpl 144 28 0 12 1 0 1 1 0 8 0 pgrppl 48 106 0 90 1 0 1 1 0 8 0 ucredpl 96 2416 0 2398 1 0 1 1 0 8 0 zombiepl 144 2125 0 2123 1 0 1 1 0 8 0 processpl 1064 2174 0 2123 5 1 4 4 0 8 0 procpl 672 5594 0 5531 8 1 7 8 0 8 0 sosppl 168 23 0 23 5 4 1 1 0 8 1 sockpl 480 6875 0 6842 123 110 13 34 0 8 7 mcl64k 65536 19 0 0 3 0 3 3 0 8 0 mcl16k 16384 12 0 0 2 0 2 2 0 8 0 mcl12k 12288 20 0 0 2 0 2 2 0 8 0 mcl9k 9216 9 0 0 1 0 1 1 0 8 0 mcl8k 8192 25 0 0 4 1 3 3 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 163 0 0 19 0 19 19 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 4650 0 0 288 0 288 288 0 8 0 bufpl 288 6080 0 143 425 0 425 425 0 8 0 anonpl 24 569166 0 555381 116 19 97 106 0 186 0 amapchunkpl 152 72859 0 72110 67 32 35 46 0 158 2 amappl16 200 5629 0 5218 53 30 23 35 0 8 0 amappl15 192 313 0 307 1 0 1 1 0 8 0 amappl14 184 9 0 5 1 0 1 1 0 8 0 amappl13 176 329 0 325 1 0 1 1 0 8 0 amappl12 168 310 0 304 1 0 1 1 0 8 0 amappl11 160 254 0 240 1 0 1 1 0 8 0 amappl10 152 303 0 295 1 0 1 1 0 8 0 amappl9 144 859 0 852 1 0 1 1 0 8 0 amappl8 136 887 0 810 3 0 3 3 0 8 0 amappl7 128 302 0 290 1 0 1 1 0 8 0 amappl6 120 623 0 597 2 1 1 2 0 8 0 amappl5 112 1881 0 1859 1 0 1 1 0 8 0 amappl4 104 1154 0 1126 2 1 1 2 0 8 0 amappl3 96 798 0 781 1 0 1 1 0 8 0 amappl2 88 1089 0 1039 3 1 2 3 0 8 0 amappl1 80 41622 0 41027 18 4 14 18 0 8 0 amappl 88 25033 0 24802 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 48 0 9 1 0 1 1 0 8 0 uaddrrnd 24 2159 0 2125 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2159 0 2125 1 0 1 1 0 8 0 vmmpekpl 168 21106 0 21054 3 0 3 3 0 8 0 vmmpepl 168 201468 0 198927 144 18 126 134 0 357 4 vmsppl 368 2158 0 2125 4 0 4 4 0 8 0 rwobjpl 56 53831 0 48287 79 0 79 79 0 8 0 pdppl 4096 4325 0 4250 164 83 81 89 0 8 6 pvpl 32 1059481 0 1040727 252 82 170 248 0 265 4 pmappl 248 2158 0 2125 4 1 3 3 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1183 0 118 31 0 31 31 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(fffffd806870d1a0,1,0) at witness_checkorder+0x10b7 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(fffffd806870d1a0,1,0) at witness_checkorder+0x10b7 sys/kern/subr_witness.c:1105 rw_enter_read(fffffd806870d190) at rw_enter_read+0x66 sys/kern/kern_rwlock.c:112 uvmfault_lookup(ffff80002e37df10,0) at uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1758 uvm_fault_check(ffff80002e37df10,ffff80002e37df48,ffff80002e37df70) at uvm_fault_check+0x3a sys/uvm/uvm_fault.c:674 uvm_fault(fffffd806870d188,20ff9000,0,2) at uvm_fault+0x102 sys/uvm/uvm_fault.c:602 kpageflttrap(ffff80002e37e0a0,20ff9000) at kpageflttrap+0x209 kerntrap(ffff80002e37e0a0) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x53 soo_ioctl(fffffd8068242ab8,c0286988,ffff80002e37e2c0,ffff8000ffff4d20) at soo_ioctl+0x26c sys_ioctl(ffff8000ffff4d20,ffff80002e37e3d8,ffff80002e37e430) at sys_ioctl+0x4a2 syscall(ffff80002e37e4a0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e37e4a0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x28b1b926850, 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x28 kd_curproc sys/dev/kcov.c:577 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x28 sys/dev/kcov.c:148 __mp_lock(ffffffff829de780) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff829de780) at __mp_lock+0x133 sys/kern/kern_lock.c:147 sleep_setup(ffff8000268a8a30,ffffffff82abdfc0,120,ffffffff82568096,2) at sleep_setup+0xd3 sys/kern/kern_synch.c:374 tsleep(ffffffff82abdfc0,120,ffffffff82568096,2) at tsleep+0x11f sys/kern/kern_synch.c:158 sys_nanosleep(ffff8000268bd268,ffff8000268a8b50,ffff8000268a8bb0) at sys_nanosleep+0x1f5 sys/kern/kern_time.c:299 syscall(ffff8000268a8c20) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000268a8c20) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcb290, count: -10