öÎOyég ·Lü¼witness: lock order reversal: 1st 0xfffffd807effa468 vmmaplk (&map->lock) 2nd 0xfffffd8069835928 inode (&ip->i_lock) lock order "&ip->i_lock"(rrwlock) -> "&map->lock"(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_read+0x66 sys/kern/kern_rwlock.c:111 #2 uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1495 #3 uvm_fault_check+0x3d sys/uvm/uvm_fault.c:513 #4 uvm_fault+0xdb sys/uvm/uvm_fault.c:694 #5 kpageflttrap+0x202 sys/arch/amd64/amd64/trap.c:265 #6 kerntrap+0xef sys/arch/amd64/amd64/trap.c:321 #7 alltraps_kern_meltdown+0x7b #8 copyout+0x53 #9 ffs_read+0x3e2 sys/ufs/ffs/ffs_vnops.c:258 #10 VOP_READ+0xbf sys/kern/vfs_vops.c:253 #11 vn_rdwr+0x10b #12 vmcmd_map_readvn+0xda sys/kern/exec_subr.c:246 #13 exec_process_vmcmds+0xb2 sys/kern/exec_subr.c:143 #14 sys_execve+0x9ff sys/kern/kern_exec.c:461 #15 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #15 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 #16 Xsyscall+0x128 lock order "&map->lock"(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 uvn_get+0x276 uvm_vnode_lock sys/uvm/uvm_vnode.c:1499 [inline] #5 uvn_get+0x276 sys/uvm/uvm_vnode.c:993 #6 uvm_fault+0xa41 sys/uvm/uvm_fault.c:1073 #7 uvm_fault_wire+0x63 sys/uvm/uvm_fault.c:1342 #8 uvm_map_pageable_wire+0x30d sys/uvm/uvm_map.c:2367 #9 sys_mlock+0x180 sys/uvm/uvm_mmap.c:772 #10 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #10 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 #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:398 witness_checkorder(fffffd8069835928,9,0) at witness_checkorder+0xf5a witness_debugger sys/kern/subr_witness.c:2490 [inline] witness_checkorder(fffffd8069835928,9,0) at witness_checkorder+0xf5a sys/kern/subr_witness.c:1087 rw_enter(fffffd8069835918,81) at rw_enter+0xd4 rrw_enter(fffffd8069835918,81) at rrw_enter+0x88 sys/kern/kern_rwlock.c:462 VOP_LOCK(fffffd8066da58f8,81) at VOP_LOCK+0x4b sys/kern/vfs_vops.c:614 vn_lock(fffffd8066da58f8,81) at vn_lock+0x6c sys/kern/vfs_vnops.c:575 uvn_get(fffffd806b67e888,1000,ffff8000212a5788,ffff8000212a5724,0,1) at uvn_get+0x276 uvm_vnode_lock sys/uvm/uvm_vnode.c:1499 [inline] uvn_get(fffffd806b67e888,1000,ffff8000212a5788,ffff8000212a5724,0,1) at uvn_get+0x276 sys/uvm/uvm_vnode.c:993 uvm_fault(fffffd807effa450,20003000,2,1) at uvm_fault+0xa41 sys/uvm/uvm_fault.c:1073 uvm_fault_wire(fffffd807effa450,20002000,20004000,1) at uvm_fault_wire+0x63 sys/uvm/uvm_fault.c:1342 uvm_map_pageable_wire(fffffd807effa450,fffffd8066c4b750,fffffd806af5dd58,104,0,0) at uvm_map_pageable_wire+0x30d sys/uvm/uvm_map.c:2367 sys_mlock(ffff8000212c4028,ffff8000212a5968,ffff8000212a59b0) at sys_mlock+0x180 sys/uvm/uvm_mmap.c:772 syscall(ffff8000212a5a30) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000212a5a30) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd3a203d03e0, count: -13 ddb{0}> show registers rdi 0x3 rsi 0x40000 acpi_pdirpa+0x2be68 rbp 0xffff8000212a5260 rbx 0x3 rdx 0xffff800000b088c0 rcx 0x3 rax 0x3ffff acpi_pdirpa+0x2be67 r8 0xffffffff823582d3 witness_checkorder+0xf33 r9 0x5 r10 0x13196f9e17c40dde r11 0x72c86600f94a4596 r12 0xffffffff828c54e0 w_lodata+0x542d0 r13 0 r14 0xffffffff828b6f40 w_lodata+0x45d30 r15 0xfffffd8002ce5500 rip 0xffffffff81f33568 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff8000212a5250 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.0) pid=142973 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000212c5738,0xffffffff828de248 process=0xffff800022aca118 user=0xffff8000212a0000, vmspace=0xfffffd807effa450 estcpu=36, cpticks=3, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 144 276122 75511 0 7 0 syz-executor.0 * 144 142973 75511 0 7 0x4000000 syz-executor.0 79422 508109 0 0 3 0x14280 nfsidl nfsio 25417 344658 0 0 3 0x14280 nfsidl nfsio 26353 379888 0 0 3 0x14280 nfsidl nfsio 40821 516674 0 0 3 0x14280 nfsidl nfsio 68088 247029 0 0 3 0x14280 nfsidl nfsio 54741 487127 0 0 3 0x14280 nfsidl nfsio 56035 123381 0 0 3 0x14280 nfsidl nfsio 48111 508156 0 0 3 0x14280 nfsidl nfsio 74201 332335 0 0 3 0x14280 nfsidl nfsio 65854 33200 0 0 3 0x14280 nfsidl nfsio 42775 91383 0 0 3 0x14280 nfsidl nfsio 43937 126741 0 0 3 0x14280 nfsidl nfsio 73631 106373 0 0 3 0x14280 nfsidl nfsio 32963 369424 0 0 3 0x14280 nfsidl nfsio 29197 103565 0 0 3 0x14280 nfsidl nfsio 52039 221784 0 0 3 0x14280 nfsidl nfsio 78801 25130 0 0 3 0x14280 nfsidl nfsio 35374 374015 0 0 3 0x14280 nfsidl nfsio 91590 123895 0 0 3 0x14280 nfsidl nfsio 4514 241112 0 0 3 0x14280 nfsidl nfsio 7450 143412 0 0 3 0x14200 bored sosplice 75511 173373 53866 0 3 0x82 nanosleep syz-executor.0 53866 112212 58645 0 3 0x82 thrsleep syz-fuzzer 53866 81422 58645 0 3 0x4000082 thrsleep syz-fuzzer 53866 43070 58645 0 3 0x4000082 thrsleep syz-fuzzer 53866 28851 58645 0 3 0x4000082 thrsleep syz-fuzzer 53866 26082 58645 0 3 0x4000082 thrsleep syz-fuzzer 53866 520346 58645 0 3 0x4000082 thrsleep syz-fuzzer 53866 449611 58645 0 3 0x4000082 thrsleep syz-fuzzer 53866 203905 58645 0 3 0x4000082 kqread syz-fuzzer 58645 188894 24658 0 3 0x10008a pause ksh 24658 321023 4038 0 3 0x92 select sshd 82291 116542 1 0 3 0x100083 ttyin getty 4038 327408 1 0 3 0x80 select sshd 59357 410721 8317 74 3 0x100092 bpf pflogd 8317 180895 1 0 3 0x80 netio pflogd 77289 245609 69490 73 3 0x100090 kqread syslogd 69490 80526 1 0 3 0x100082 netio syslogd 55128 382087 1 77 3 0x100090 poll dhclient 27255 197949 1 0 3 0x80 poll dhclient 39375 483654 0 0 3 0x14200 bored smr 71438 113899 0 0 3 0x14200 pgzero zerothread 37464 264307 0 0 3 0x14200 aiodoned aiodoned 15846 69008 0 0 3 0x14200 syncer update 45772 130894 0 0 3 0x14200 cleaner cleaner 66876 7149 0 0 3 0x14200 reaper reaper 79994 517181 0 0 3 0x14200 pgdaemon pagedaemon 60989 431390 0 0 3 0x14200 bored crynlk 71176 208160 0 0 3 0x14200 bored crypto 89797 170626 0 0 3 0x14200 bored viomb 85798 459770 0 0 3 0x40014200 acpi0 acpi0 44595 324586 0 0 3 0x40014200 idle1 77243 218350 0 0 3 0x14200 bored softnet 88767 502822 0 0 3 0x14200 bored systqmp 16038 77277 0 0 3 0x14200 bored systq 64577 204081 0 0 3 0x40014200 bored softclock 48019 161724 0 0 3 0x40014200 idle0 1 310105 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 144 (syz-executor.0) thread 0xffff8000212c4028 (142973) shared rwlock vmmaplk r = 0 (0xfffffd807effa468) #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 vm_map_lock_ln+0xda sys/uvm/uvm_map.c:5463 #3 uvm_map_pageable+0x120 sys/uvm/uvm_map.c:2463 #4 sys_mlock+0x180 sys/uvm/uvm_mmap.c:772 #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 kernel_lock &kernel_lock r = 0 (0xffffffff828db810) #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{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9529 6436K 7335K 78643K 14283 0 pcb 13 8K 8K 78643K 268 0 rtable 89 4K 5K 78643K 589 0 ifaddr 65 13K 15K 78643K 265 0 sysctl 2 0K 0K 78643K 2 0 counters 41 33K 34K 78643K 127 0 ioctlops 0 0K 4K 78643K 1685 0 iov 0 0K 12K 78643K 145 0 mount 1 1K 1K 78643K 1 0 vnodes 1221 77K 77K 78643K 2420 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 33 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 187 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1825 197K 290K 78643K 13109 0 file desc 4 9K 25K 78643K 3785 0 sigio 0 0K 0K 78643K 8 0 proc 61 63K 95K 78643K 733 0 subproc 16 1K 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 248 0 in_multi 18 1K 2K 78643K 305 0 ether_multi 1 0K 0K 78643K 86 0 mrt 0 0K 0K 78643K 19 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 527 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 139 26K 38K 78643K 9484 0 UVM aobj 124 8K 8K 78643K 124 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 238 0 NDP 11 0K 0K 78643K 67 0 temp 112 3967K 4044K 78643K 17844 0 kqueue 3 4K 12K 78643K 270 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 10 0 6 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 120 67 0 65 1 0 1 1 0 8 0 rtentry 112 93 0 61 2 0 2 2 0 8 0 unpcb 120 1390 0 1351 3 1 2 3 0 8 0 syncache 296 44 0 44 3 2 1 1 0 8 1 tcpqe 32 27 0 27 2 1 1 1 0 8 1 tcpcb 736 794 0 785 21 19 2 7 0 8 1 inpcb 296 1600 0 1593 7 5 2 4 0 8 1 rttmr 72 4 0 4 1 1 0 1 0 8 0 nd6 48 17 0 16 1 0 1 1 0 8 0 pkpcb 40 22 0 22 1 0 1 1 0 8 1 kcovpl 48 4 0 3 1 0 1 1 0 8 0 ppxss 1128 29 0 29 4 4 0 1 0 8 0 pffrag 232 4 0 4 1 1 0 1 0 482 0 pffrnode 88 4 0 4 1 1 0 1 0 8 0 pffrent 40 13 0 13 2 2 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 4 0 1 1 0 1 1 0 8 0 pfstitem 24 30 0 28 1 0 1 1 0 8 0 pfstkey 112 30 0 28 1 0 1 1 0 8 0 pfstate 328 30 0 28 2 1 1 2 0 8 0 pfrule 1360 133 0 101 4 1 3 3 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 409 0 275 13 1 12 13 0 8 0 art_table 32 410 0 275 2 0 2 2 0 8 0 art_node 16 92 0 62 1 0 1 1 0 8 0 sysvmsgpl 40 20 0 0 1 0 1 1 0 8 0 semapl 112 185 0 175 1 0 1 1 0 8 0 shmpl 112 121 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 6327 0 4894 90 0 90 90 0 8 0 ffsino 272 6327 0 4894 96 0 96 96 0 8 0 nchpl 144 11007 0 9419 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 27406 0 27406 1 0 1 1 0 8 1 percpumem 16 74 0 43 1 0 1 1 0 8 0 vmpool 560 14 0 14 1 1 0 1 0 8 0 pfiaddrpl 120 5 0 2 1 0 1 1 0 8 0 scsiplug 72 10 0 10 1 1 0 1 0 8 0 scxspl 216 34822 0 34822 11 10 1 8 0 8 1 plimitpl 152 186 0 179 1 0 1 1 0 8 0 sigapl 424 4017 0 3965 8 1 7 7 0 8 1 futexpl 56 27213 0 27213 1 0 1 1 0 8 1 knotepl 112 358 0 344 1 0 1 1 0 8 0 kqueuepl 152 1847 0 1832 1 0 1 1 0 8 0 pipepl 304 359 0 351 4 3 1 2 0 8 0 fdescpl 496 3980 0 3965 3 0 3 3 0 8 0 filepl 152 14709 0 14623 7 2 5 6 0 8 1 lockfpl 104 486 0 485 1 0 1 1 0 8 0 lockfspl 48 213 0 212 1 0 1 1 0 8 0 sessionpl 144 20 0 10 1 0 1 1 0 8 0 pgrppl 48 25 0 15 1 0 1 1 0 8 0 ucredpl 96 2127 0 2118 1 0 1 1 0 8 0 zombiepl 144 3965 0 3965 1 0 1 1 0 8 1 processpl 1056 4017 0 3965 4 0 4 4 0 8 0 procpl 656 8632 0 8572 6 0 6 6 0 8 0 sosppl 168 80 0 80 4 4 0 1 0 8 0 sockpl 400 3079 0 3031 15 9 6 9 0 8 0 mcl64k 65536 28 0 0 4 0 4 4 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 0 8 1 mcl12k 12288 7 0 0 1 0 1 1 0 8 0 mcl9k 9216 16 0 0 2 0 2 2 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k 2048 249 0 0 14 0 14 14 0 8 0 mtagpl 96 293 0 0 8 0 8 8 0 8 0 mbufpl 256 973 0 0 50 0 50 50 0 8 0 bufpl 280 10473 0 4224 447 0 447 447 0 8 0 anonpl 16 280829 0 273595 32 2 30 30 0 124 0 amapchunkpl 152 14648 0 14370 14 3 11 11 0 158 0 amappl16 192 12224 0 12020 17 3 14 14 0 8 3 amappl15 184 1 0 1 1 1 0 1 0 8 0 amappl14 176 1898 0 1890 1 0 1 1 0 8 0 amappl13 168 74 0 73 1 0 1 1 0 8 0 amappl12 160 14 0 8 1 0 1 1 0 8 0 amappl11 152 57 0 42 1 0 1 1 0 8 0 amappl10 144 1869 0 1866 1 0 1 1 0 8 0 amappl9 136 28 0 28 1 1 0 1 0 8 0 amappl8 128 303 0 221 3 0 3 3 0 8 0 amappl7 120 268 0 261 1 0 1 1 0 8 0 amappl6 112 1935 0 1925 1 0 1 1 0 8 0 amappl5 104 4823 0 4805 1 0 1 1 0 8 0 amappl4 96 316 0 285 1 0 1 1 0 8 0 amappl3 88 210 0 203 1 0 1 1 0 8 0 amappl2 80 29022 0 28953 2 0 2 2 0 8 0 amappl1 72 122104 0 121639 26 16 10 19 0 8 0 amappl 80 8936 0 8886 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 64 123 0 0 2 0 2 2 0 8 0 uaddrrnd 24 3994 0 3979 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3994 0 3979 1 0 1 1 0 8 0 vmmpekpl 168 24693 0 24657 2 0 2 2 0 8 0 vmmpepl 168 498978 0 497591 98 26 72 75 0 357 4 vmsppl 368 3993 0 3979 2 0 2 2 0 8 0 pdppl 4096 7995 0 7958 59 18 41 45 0 8 4 pvpl 32 1299847 0 1288938 160 68 92 114 0 265 4 pmappl 232 3993 0 3979 3 2 1 2 0 8 0 extentpl 40 57 0 39 1 0 1 1 0 8 0 phpool 112 385 0 50 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(fffffd8069835928,9,0) at witness_checkorder+0xf5a witness_debugger sys/kern/subr_witness.c:2490 [inline] witness_checkorder(fffffd8069835928,9,0) at witness_checkorder+0xf5a sys/kern/subr_witness.c:1087 rw_enter(fffffd8069835918,81) at rw_enter+0xd4 rrw_enter(fffffd8069835918,81) at rrw_enter+0x88 sys/kern/kern_rwlock.c:462 VOP_LOCK(fffffd8066da58f8,81) at VOP_LOCK+0x4b sys/kern/vfs_vops.c:614 vn_lock(fffffd8066da58f8,81) at vn_lock+0x6c sys/kern/vfs_vnops.c:575 uvn_get(fffffd806b67e888,1000,ffff8000212a5788,ffff8000212a5724,0,1) at uvn_get+0x276 uvm_vnode_lock sys/uvm/uvm_vnode.c:1499 [inline] uvn_get(fffffd806b67e888,1000,ffff8000212a5788,ffff8000212a5724,0,1) at uvn_get+0x276 sys/uvm/uvm_vnode.c:993 uvm_fault(fffffd807effa450,20003000,2,1) at uvm_fault+0xa41 sys/uvm/uvm_fault.c:1073 uvm_fault_wire(fffffd807effa450,20002000,20004000,1) at uvm_fault_wire+0x63 sys/uvm/uvm_fault.c:1342 uvm_map_pageable_wire(fffffd807effa450,fffffd8066c4b750,fffffd806af5dd58,104,0,0) at uvm_map_pageable_wire+0x30d sys/uvm/uvm_map.c:2367 sys_mlock(ffff8000212c4028,ffff8000212a5968,ffff8000212a59b0) at sys_mlock+0x180 sys/uvm/uvm_mmap.c:772 syscall(ffff8000212a5a30) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000212a5a30) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd3a203d03e0, count: -13 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 __mp_lock(ffffffff828db608) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828db608) at __mp_lock+0x122 sys/kern/kern_lock.c:147 sleep_setup(ffff8000212cbbb0,ffffffff8278b800,120,ffffffff823c0b35) at sleep_setup+0xcf sys/kern/kern_synch.c:373 tsleep(ffffffff8278b800,120,ffffffff823c0b35,2) at tsleep+0xdd sleep_setup_timeout sys/kern/kern_synch.c:435 [inline] tsleep(ffffffff8278b800,120,ffffffff823c0b35,2) at tsleep+0xdd sys/kern/kern_synch.c:151 sys_nanosleep(ffff8000212c5738,ffff8000212cbce0,ffff8000212cbd30) at sys_nanosleep+0x1f5 sys/kern/kern_time.c:297 syscall(ffff8000212cbdb0) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000212cbdb0) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe8a10, count: -9