witness: lock order reversal: 1st 0xfffffd806b8a5820 vmmaplk (&map->lock) 2nd 0xfffffd8067df6928 inode (&ip->i_lock) lock order [1] vmmaplk (&map->lock) -> [2] inode (&ip->i_lock) #0 rw_enter+0x122 #1 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #2 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #3 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #4 vn_rdwr+0xd1 sys/kern/vfs_vnops.c:320 #5 vndstrategy+0x4ff sys/dev/vnd.c:342 #6 physio+0x2f6 sys/kern/kern_physio.c:162 #7 spec_read+0x155 sys/kern/spec_vnops.c:215 #8 VOP_READ+0x102 sys/kern/vfs_vops.c:227 #9 vn_read+0x17b sys/kern/vfs_vnops.c:369 #10 dofilereadv+0x230 sys/kern/sys_generic.c:252 #11 sys_read+0xa2 sys/kern/sys_generic.c:172 #12 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #12 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #13 Xsyscall+0x128 lock order [2] inode (&ip->i_lock) -> [1] vmmaplk (&map->lock) #0 rw_enter_read+0xab sys/kern/kern_rwlock.c:112 #1 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1819 #2 uvm_fault_check+0x49 sys/uvm/uvm_fault.c:672 #3 uvm_fault+0xf5 sys/uvm/uvm_fault.c:600 #4 kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 #5 kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 #6 alltraps_kern_meltdown+0x7b #7 copyout+0x57 #8 ffs_read+0x422 sys/ufs/ffs/ffs_vnops.c:254 #9 VOP_READ+0x102 sys/kern/vfs_vops.c:227 #10 vn_rdwr+0x15b #11 vmcmd_map_readvn+0x142 sys/kern/exec_subr.c:249 #12 exec_process_vmcmds+0xfb sys/kern/exec_subr.c:139 #13 sys_execve+0xbe4 sys/kern/kern_exec.c:468 #14 start_init+0x3c6 sys/kern/init_main.c:714 #15 proc_trampoline+0x10 Stopped at db_enter+0x25: 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+0x25 sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(fffffd8067df6928,9,0) at witness_checkorder+0x1047 rw_enter(fffffd8067df6918,1) at rw_enter+0x122 rrw_enter(fffffd8067df6918,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464 VOP_LOCK(fffffd805f0b3d88,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd805f0b3d88,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564 vn_rdwr(0,fffffd805f0b3d88,ffff800011a26140,df,0,1,531535c8f20a8e2d,0,ffff800000b3e000,0) at vn_rdwr+0xd1 sys/kern/vfs_vnops.c:320 vndstrategy(fffffd80606fc8f8) at vndstrategy+0x4ff sys/dev/vnd.c:342 physio(ffffffff81a98990,2902,8000,ffffffff81fe1a60,ffff8000372366c8) at physio+0x2f6 sys/kern/kern_physio.c:162 spec_read(ffff800037236530) at spec_read+0x155 sys/kern/spec_vnops.c:215 VOP_READ(fffffd806faf8eb8,ffff8000372366c8,0,fffffd807f7d3410) at VOP_READ+0x102 sys/kern/vfs_vops.c:227 vn_read(fffffd806bedd3b0,ffff8000372366c8,0) at vn_read+0x17b sys/kern/vfs_vnops.c:369 dofilereadv(ffff8000ffff02b0,3,ffff8000372366c8,0,ffff800037236780) at dofilereadv+0x230 sys/kern/sys_generic.c:252 sys_read(ffff8000ffff02b0,ffff800037236830,ffff800037236780) at sys_read+0xa2 sys/kern/sys_generic.c:172 syscall(ffff800037236830) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff800037236830) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xee71cfa6610, count: -16 ddb{1}> show registers rdi 0 rsi 0x40000 acpi_pdirpa+0x2be71 rbp 0xffff800037235ff0 rbx 0xfffffd80042c6570 rdx 0xffff800001290c80 rcx 0xffff8000ffff02b0 rax 0x3ffff acpi_pdirpa+0x2be70 r8 0xffff800037235ed0 r9 0x8080808080808080 r10 0xc8e0fbd000f263f8 r11 0xbfc1332dfa8e36d8 r12 0 r13 0xfffffd8003adde00 r14 0x3 r15 0xffffffff rip 0xffffffff8221d4b5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff800037235fe0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=508138 pid=17198 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffff0028,0xffffffff835a9210 process=0xffff8000ffff56c0 user=0xffff800037231000, vmspace=0xfffffd806b8a5728 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 17198 64552 59417 0 7 0 syz-executor *17198 508138 59417 0 7 0x4000000 syz-executor 80148 222371 51647 60928 2 0x10 syz-executor 80148 337629 51647 60928 3 0x4000090 fsleep syz-executor 91021 483081 57305 0 2 0 syz-executor 91021 68253 57305 0 3 0x4000080 fsleep syz-executor 17803 258589 84280 0 2 0 syz-executor 17803 289779 84280 0 3 0x4000080 wsevent_read syz-executor 49112 174033 89525 0 2 0 syz-executor 49112 329355 89525 0 3 0x4000080 fsleep syz-executor 49112 259754 89525 0 3 0x4000080 fsleep syz-executor 49112 136098 89525 0 3 0x4000080 fsleep syz-executor 62675 369825 84703 60929 2 0x10 syz-executor 62675 341646 84703 60929 3 0x4000090 kqsel syz-executor 62675 281202 84703 60929 3 0x4000090 pipewr syz-executor 62675 477558 84703 60929 3 0x4000090 pipewr syz-executor 62675 152317 84703 60929 3 0x4000090 fsleep syz-executor 18659 203375 1 0 3 0x100083 ttyin getty 59417 492256 9821 0 3 0x82 nanoslp syz-executor 88652 182153 0 0 3 0x14200 bored sosplice 84280 27053 9821 0 3 0x82 nanoslp syz-executor 84703 286716 9821 0 3 0x82 nanoslp syz-executor 89525 139164 9821 0 3 0x82 nanoslp syz-executor 51647 179947 9821 0 3 0x82 nanoslp syz-executor 91661 98601 9821 0 3 0x82 nanoslp syz-executor 57305 193087 9821 0 3 0x82 nanoslp syz-executor 81744 453136 9821 0 3 0x82 nanoslp syz-executor 9821 33783 82030 0 3 0x82 kqread syz-executor 82030 102766 92422 0 3 0x10008a sigsusp ksh 92422 111395 10100 0 3 0x98 kqread sshd-session 10100 214943 40083 0 3 0x92 kqread sshd-session 40083 91014 1 0 3 0x88 kqread sshd 98486 272071 73090 74 3 0x1100092 bpf pflogd 73090 313293 1 0 3 0x80 sbwait pflogd 19744 331111 1798 73 3 0x1100090 kqread syslogd 1798 129288 1 0 3 0x100082 sbwait syslogd 48373 90460 1 0 3 0x100080 kqread resolvd 66322 257790 9828 77 3 0x100092 kqread dhcpleased 38032 85373 9828 77 3 0x100092 kqread dhcpleased 9828 204169 1 0 3 0x80 kqread dhcpleased 41935 263823 0 0 3 0x14200 bored smr 62561 92848 0 0 2 0x14200 zerothread 76359 57595 0 0 3 0x14200 aiodoned aiodoned 98831 40709 0 0 3 0x14200 syncer update 61277 467506 0 0 3 0x14200 cleaner cleaner 62147 400586 0 0 3 0x14200 reaper reaper 66623 446085 0 0 3 0x14200 pgdaemon pagedaemon 75708 97667 0 0 3 0x14200 bored viomb 34203 50902 0 0 3 0x40014200 acpi0 acpi0 94394 276622 0 0 3 0x40014200 idle1 34717 384117 0 0 3 0x14200 bored softnet3 22918 251411 0 0 3 0x14200 bored softnet2 70012 358794 0 0 3 0x14200 bored softnet1 27772 505711 0 0 3 0x14200 bored softnet0 57086 163545 0 0 3 0x14200 bored systqmp 78820 326103 0 0 3 0x14200 bored systq 8698 394062 0 0 3 0x14200 tmoslp softclockmp 82269 324689 0 0 3 0x40014200 tmoslp softclock 68846 237917 0 0 3 0x40014200 idle0 1 70209 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 17198 (syz-executor) thread 0xffff8000ffff02b0 (508138) shared rwlock vmmaplk r = 0 (0xfffffd806b8a5820) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 uvm_vslock_device+0x149 sys/uvm/uvm_glue.c:172 #2 physio+0x277 sys/kern/kern_physio.c:139 #3 spec_read+0x155 sys/kern/spec_vnops.c:215 #4 VOP_READ+0x102 sys/kern/vfs_vops.c:227 #5 vn_read+0x17b sys/kern/vfs_vnops.c:369 #6 dofilereadv+0x230 sys/kern/sys_generic.c:252 #7 sys_read+0xa2 sys/kern/sys_generic.c:172 #8 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #8 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83622cc8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 vn_read+0x56 sys/kern/vfs_vnops.c:351 #2 dofilereadv+0x230 sys/kern/sys_generic.c:252 #3 sys_read+0xa2 sys/kern/sys_generic.c:172 #4 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #4 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #5 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10226 11139K 11570K 166960K 13327 0 pcb 18 16K 17K 166960K 364 0 rtable 210 7K 8K 166960K 499 0 pf 35 17K 22K 166960K 110 0 ifaddr 39 6K 8K 166960K 73 0 ifgroup 51 2K 2K 166960K 108 0 sysctl 3 0K 0K 166960K 3 0 counters 62 36K 36K 166960K 96 0 ioctlops 0 0K 8K 166960K 1584 0 iov 0 0K 36K 166960K 147 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1488 94K 94K 166960K 2559 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 18 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 269 0 dirhash 12 2K 2K 166960K 39 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 18 65K 97K 166960K 1268 0 sigio 0 0K 0K 166960K 146 0 proc 72 91K 140K 166960K 675 0 subproc 104 6K 6K 166960K 117 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 230 0 in_multi 84 6K 7K 166960K 190 0 ether_multi 1 0K 0K 166960K 5 0 mrt 0 0K 0K 166960K 6 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 235 1049K 1049K 166960K 235 0 exec 0 0K 1K 166960K 631 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 260 74K 83K 166960K 13444 0 UVM aobj 33 2K 2K 166960K 38 0 pinsyscall 43 86K 106K 166960K 2401 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 82 0 NDP 11 0K 2K 166960K 49 0 temp 69 6825K 6900K 166960K 58626 0 kqueue 14 22K 26K 166960K 174 0 SYN cache 2 10K 18K 166960K 3 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 24 0 0 1 0 1 1 0 8 0 rtpcb 120 141 0 138 2 1 1 2 0 8 0 rtentry 112 154 0 59 4 0 4 4 0 8 0 unpcb 144 1087 0 1070 7 6 1 6 0 8 0 syncache 336 9 0 9 3 2 1 1 0 8 1 tcpcb 808 286 0 281 2 1 1 2 0 8 0 arp 120 25 0 7 1 0 1 1 0 8 0 ipq 40 7 0 2 1 0 1 1 0 8 0 ipqe 40 54 0 49 1 0 1 1 0 8 0 inpcb 336 1331 0 1320 10 3 7 7 0 8 6 nd6 136 34 0 10 2 0 2 2 0 8 0 pkpcb 40 5 0 5 2 1 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1168 8 0 8 4 3 1 1 0 8 1 pffrag 232 3 0 2 1 0 1 1 0 482 0 pffrnode 88 3 0 2 1 0 1 1 0 8 0 pffrent 40 5 0 4 1 0 1 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 pfanchor 1288 3 0 0 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 31 0 20 1 0 1 1 0 8 0 pfstkey 128 31 0 20 1 0 1 1 0 8 0 pfstate 376 31 0 20 4 0 4 4 0 8 0 pfrule 1344 26 0 17 2 0 2 2 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 664 0 259 33 4 29 31 0 8 1 art_table 32 667 0 259 5 0 5 5 0 8 0 art_node 16 150 0 68 1 0 1 1 0 8 0 sysvmsgpl 40 74 0 70 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 264 0 254 1 0 1 1 0 8 0 shmpl 112 35 0 5 1 0 1 1 0 8 0 dirhash 1024 35 0 18 3 0 3 3 0 8 0 dino2pl 256 3542 0 2041 95 0 95 95 0 8 0 ffsino 272 3542 0 2041 102 0 102 102 0 8 0 nchpl 144 5383 0 3694 64 0 64 64 0 8 0 uvmvnodes 80 4517 0 0 93 0 93 93 0 8 0 vnodes 216 4517 0 0 251 0 251 251 0 8 0 namei 1024 18287 0 18287 3 2 1 2 0 8 1 percpumem 16 62 0 17 1 0 1 1 0 8 0 kstatmem 264 56 0 34 2 0 2 2 0 8 0 scsiplug 72 2 0 2 1 1 0 1 0 8 0 scxspl 216 16993 0 16993 14 13 1 8 1 8 1 plimitpl 152 324 0 307 1 0 1 1 0 8 0 sigapl 424 1576 0 1525 7 1 6 7 0 8 0 futexpl 64 21789 0 21783 1 0 1 1 0 8 0 knotepl 120 542 0 0 16 0 16 16 0 8 0 kqueuepl 216 285 0 275 3 2 1 3 0 8 0 pipepl 320 312 0 284 11 8 3 8 0 8 0 fdescpl 496 1554 0 1522 6 1 5 6 0 8 0 filepl 152 10226 0 9968 24 10 14 20 0 8 1 lockfpl 104 460 0 458 1 0 1 1 0 8 0 lockfspl 48 176 0 174 1 0 1 1 0 8 0 sessionpl 144 31 0 22 1 0 1 1 0 8 0 pgrppl 48 49 0 32 1 0 1 1 0 8 0 ucredpl 104 1591 0 1575 1 0 1 1 0 8 0 zombiepl 144 1527 0 1525 2 1 1 1 0 8 0 processpl 1160 1576 0 1525 5 1 4 5 0 8 0 procpl 648 3453 0 3391 6 0 6 6 0 8 0 srpgc 96 4 0 4 2 2 0 1 0 8 0 sosppl 168 9 0 9 4 3 1 1 0 8 1 sockpl 664 2576 0 2545 17 8 9 14 0 8 6 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 149 0 0 19 0 19 19 0 8 0 mcl2k 2048 36 0 0 4 0 4 4 0 8 0 mtagpl 96 285 0 0 7 0 7 7 0 8 0 mbufpl 256 598 0 0 37 0 37 37 0 8 0 bufpl 280 7868 0 1693 442 0 442 442 0 8 0 anonpl 24 298550 0 289011 90 11 79 80 0 185 0 amapchunkpl 152 44227 0 43562 42 10 32 32 0 158 6 amappl16 200 7996 0 7715 42 15 27 27 0 8 0 amappl15 192 10 0 10 1 1 0 1 0 8 0 amappl14 184 126 0 114 1 0 1 1 0 8 0 amappl13 176 40 0 40 1 1 0 1 0 8 0 amappl12 168 2241 0 2209 4 2 2 3 0 8 0 amappl11 160 52 0 38 1 0 1 1 0 8 0 amappl10 152 7 0 7 1 1 0 1 0 8 0 amappl9 144 160 0 159 1 0 1 1 0 8 0 amappl8 136 40 0 37 1 0 1 1 0 8 0 amappl7 128 118 0 105 1 0 1 1 0 8 0 amappl6 120 182 0 179 1 0 1 1 0 8 0 amappl5 112 149 0 137 1 0 1 1 0 8 0 amappl4 104 337 0 317 1 0 1 1 0 8 0 amappl3 96 8170 0 8065 3 0 3 3 0 8 0 amappl2 88 1889 0 1801 3 0 3 3 0 8 0 amappl1 80 12522 0 11950 15 1 14 15 0 8 0 amappl 88 12924 0 12726 5 0 5 5 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 8 0 8 3 3 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 37 0 5 1 0 1 1 0 8 0 uaddrrnd 24 1554 0 1522 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1554 0 1522 1 0 1 1 0 8 0 vmmpekpl 168 13859 0 13809 3 0 3 3 0 8 0 vmmpepl 168 104099 0 101890 114 8 106 106 0 357 1 vmsppl 448 1553 0 1522 6 2 4 5 0 8 0 rwobjpl 56 36065 0 30294 84 1 83 83 0 8 1 pdppl 4096 3115 0 3044 115 42 73 87 0 8 2 pvpl 32 20095 0 0 162 0 162 162 0 265 0 pmappl 248 1553 0 1522 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 446 0 63 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff834b2ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:584 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:153 __mp_lock(ffffffff83622ac0) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83622ac0) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 intr_handler(ffff80003722a2a0,ffff800000069c00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __mp_lock(ffffffff83622ac0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83622ac0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff80003722a400,ffff800000079e00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge25_untramp() at Xintr_ioapic_edge25_untramp+0x18f __mp_lock(ffffffff83622ac0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83622ac0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 softintr_dispatch(0) at softintr_dispatch+0x5b sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x7d3b50645870, count: -13 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x25: addq $0x8,%rsp ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(fffffd8067df6928,9,0) at witness_checkorder+0x1047 rw_enter(fffffd8067df6918,1) at rw_enter+0x122 rrw_enter(fffffd8067df6918,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464 VOP_LOCK(fffffd805f0b3d88,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd805f0b3d88,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564 vn_rdwr(0,fffffd805f0b3d88,ffff800011a26140,df,0,1,531535c8f20a8e2d,0,ffff800000b3e000,0) at vn_rdwr+0xd1 sys/kern/vfs_vnops.c:320 vndstrategy(fffffd80606fc8f8) at vndstrategy+0x4ff sys/dev/vnd.c:342 physio(ffffffff81a98990,2902,8000,ffffffff81fe1a60,ffff8000372366c8) at physio+0x2f6 sys/kern/kern_physio.c:162 spec_read(ffff800037236530) at spec_read+0x155 sys/kern/spec_vnops.c:215 VOP_READ(fffffd806faf8eb8,ffff8000372366c8,0,fffffd807f7d3410) at VOP_READ+0x102 sys/kern/vfs_vops.c:227 vn_read(fffffd806bedd3b0,ffff8000372366c8,0) at vn_read+0x17b sys/kern/vfs_vnops.c:369 dofilereadv(ffff8000ffff02b0,3,ffff8000372366c8,0,ffff800037236780) at dofilereadv+0x230 sys/kern/sys_generic.c:252 sys_read(ffff8000ffff02b0,ffff800037236830,ffff800037236780) at sys_read+0xa2 sys/kern/sys_generic.c:172 syscall(ffff800037236830) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff800037236830) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xee71cfa6610, count: -16