witness: lock order reversal: 1st 0xfffffd806827ed30 amaplk (&amap->am_lock) 2nd 0xffffffff82e169c8 vmmaplk (&map->lock) lock order [1] amaplk (&amap->am_lock) -> [2] vmmaplk (&map->lock) #0 rw_enter_read+0x87 sys/kern/kern_rwlock.c:112 #1 uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1785 #2 uvm_fault_check+0x3e sys/uvm/uvm_fault.c:672 #3 uvm_fault+0xf2 sys/uvm/uvm_fault.c:600 #4 kpageflttrap+0x238 sys/arch/amd64/amd64/trap.c:279 #5 kerntrap+0xf2 sys/arch/amd64/amd64/trap.c:332 #6 alltraps_kern_meltdown+0x7b #7 witness_checkorder+0x1db sys/kern/subr_witness.c:803 #8 mtx_enter+0x3e sys/kern/kern_lock.c:265 #9 pmap_page_remove+0xa7 rcr3 machine/cpufunc.h:139 [inline] #9 pmap_page_remove+0xa7 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:425 [inline] #9 pmap_page_remove+0xa7 sys/arch/amd64/amd64/pmap.c:1950 #10 u vm_a OpenBSD/amd64 (ci-openbsd-multnifcore-6.c.syzkalrler.internal) (tety00) login: e_list+0x98 #11 amap_wipeout+0x1af sys/uvm/uvm_amap.c:502 #12 uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1354 #13 uvm_map_teardown+0x2f8 sys/uvm/uvm_map.c:2554 #14 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3461 #15 reaper+0x197 sys/kern/kern_exit.c:475 #16 proc_trampoline+0x10 lock order [2] vmmaplk (&map->lock) -> [1] amaplk (&amap->am_lock) #0 rw_enter_write+0x5f sys/kern/kern_rwlock.c:128 #1 uvm_fault_check+0x401 sys/uvm/uvm_fault.c:782 #2 uvm_fault+0xf2 sys/uvm/uvm_fault.c:600 #3 kpageflttrap+0x238 sys/arch/amd64/amd64/trap.c:279 #4 kerntrap+0xf2 sys/arch/amd64/amd64/trap.c:332 #5 alltraps_kern_meltdown+0x7b #6 copyout+0x57 #7 proc_trampoline+0x10 Stopped at db_enter+0x1c: addq $0x8,%rsp 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+0x1c sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffffffff82e169c8,1,0) at witness_checkorder+0xc05 rw_enter_read(ffffffff82e169b8) at rw_enter_read+0x87 sys/kern/kern_rwlock.c:112 uvmfault_lookup(ffff80002a154fc0,0) at uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff80002a154fc0,ffff80002a154ff8,ffff80002a155020) at uvm_fault_check+0x3e sys/uvm/uvm_fault.c:672 uvm_fault(ffffffff82e168d8,fe000000000,0,1) at uvm_fault+0xf2 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff80002a155160,fe00000000b) at kpageflttrap+0x238 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff80002a155160) at kerntrap+0xf2 sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b witness_checkorder(fffffd8067c558c8,9,0) at witness_checkorder+0x1db sys/kern/subr_witness.c:803 mtx_enter(fffffd8067c558b8) at mtx_enter+0x3e sys/kern/kern_lock.c:265 pmap_page_remove(fffffd8007907420) at pmap_page_remove+0xa7 rcr3 machine/cpufunc.h:139 [inline] pmap_page_remove(fffffd8007907420) at pmap_page_remove+0xa7 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:425 [inline] pmap_page_remove(fffffd8007907420) at pmap_page_remove+0xa7 sys/arch/amd64/amd64/pmap.c:1950 uvm_anfree_list(fffffd8069ecb510,0) at uvm_anfree_list+0x98 amap_wipeout(fffffd806a22aeb0) at amap_wipeout+0x1af sys/uvm/uvm_amap.c:502 uvm_unmap_detach(ffff80002a155490,1) at uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1354 uvm_map_teardown(fffffd8065d1f538) at uvm_map_teardown+0x2f8 sys/uvm/uvm_map.c:2554 uvmspace_free(fffffd8065d1f538) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3461 reaper(ffff80002a149488) at reaper+0x197 sys/kern/kern_exit.c:475 end trace frame: 0x0, count: -18 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002a154cc0 rbx 0xffffffff828e8252 pp_r600_decoded_lanes+0x32ae5 rdx 0 rcx 0xffff80002a149488 rax 0xffff800029cebff0 r8 0xffff80002a154ba0 r9 0x8080808080808080 r10 0xb98c0651233a9230 r11 0xdd543e0638cf6d38 r12 0xfffffd8003b26ab0 r13 0xfffffd8003338d80 r14 0x3 r15 0xffffffff rip 0xffffffff8139239c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002a154cb0 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (reaper) tid=224784 pid=36887 tcnt=1 stat=onproc flags process=14000 proc=200 runpri=84, usrpri=86, slppri=4, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a149718,0xffff80002a1487c8 process=0xffff80002a15b5a8 user=0xffff80002a150000, vmspace=0xffffffff82e168d8 estcpu=36, cpticks=6, pctcpu=32.88, user=0, sys=5, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 22157 344544 2618 0 7 0x8000000 syz-executor.2 22157 63784 2618 0 3 0xc000000 getblk syz-executor.2 22157 174665 2618 0 3 0xc000000 inode syz-executor.2 80482 283734 12624 0 3 0x810008a sigsusp sh 12624 442340 29676 0 2 0x8000002 syz-executor.4 60846 409681 82143 0 3 0x810008a sigsusp sh 39676 31629 27976 0 3 0x810008a sigsusp sh 84920 378549 15797 0 3 0x810008a sigsusp sh 15797 3958 29676 0 3 0x8000082 wait syz-executor.7 27976 222785 29676 0 3 0x8000082 wait syz-executor.3 82143 171954 29676 0 3 0x8000082 wait syz-executor.0 62304 35403 0 0 3 0x14200 acct acct 71830 464431 29676 0 3 0x8000082 wait syz-executor.5 8357 113175 0 0 3 0x14280 nfsidl nfsio 71443 455268 0 0 3 0x14280 nfsidl nfsio 44029 91957 0 0 3 0x14280 nfsidl nfsio 85996 257576 0 0 3 0x14280 nfsidl nfsio 66574 338396 0 0 3 0x14280 nfsidl nfsio 4548 260390 0 0 3 0x14280 nfsidl nfsio 54662 70507 0 0 3 0x14280 nfsidl nfsio 17081 439958 0 0 3 0x14280 nfsidl nfsio 55049 269290 0 0 3 0x14280 nfsidl nfsio 31231 20763 0 0 3 0x14280 nfsidl nfsio 58774 123726 0 0 3 0x14280 nfsidl nfsio 16060 130442 0 0 3 0x14280 nfsidl nfsio 16272 232206 0 0 3 0x14280 nfsidl nfsio 96374 424182 0 0 3 0x14280 nfsidl nfsio 38098 505931 0 0 3 0x14280 nfsidl nfsio 26379 130920 0 0 3 0x14280 nfsidl nfsio 24848 87321 0 0 3 0x14280 nfsidl nfsio 32816 26614 0 0 3 0x14280 nfsidl nfsio 91613 501978 0 0 3 0x14280 nfsidl nfsio 32867 323255 0 0 3 0x14280 nfsidl nfsio 68021 106315 29676 0 2 0x8000002 syz-executor.1 37394 52034 0 0 3 0x14200 bored sosplice 98250 384195 49877 0 3 0x18100082 netio arp 49877 404029 1 0 3 0x810008a sigsusp sh 2618 475846 29676 0 3 0x8000082 nanoslp syz-executor.2 82215 294086 29676 0 3 0x8000082 wait syz-executor.6 29676 233403 86269 0 2 0x1a081082 syz-fuzzer 29676 142327 86269 0 2 0x1e081482 syz-fuzzer 29676 315223 86269 0 2 0x1e081082 syz-fuzzer 29676 428287 86269 0 2 0x1e081082 syz-fuzzer 29676 383794 86269 0 3 0x1e003002 suspend syz-fuzzer 29676 172061 86269 0 2 0x1e081082 syz-fuzzer 29676 210368 86269 0 2 0x1e081082 syz-fuzzer 29676 501681 86269 0 2 0x1e081082 syz-fuzzer 29676 160089 86269 0 2 0x1e081082 syz-fuzzer 86269 400023 27141 0 3 0x810008a sigsusp ksh 27141 438177 85813 0 2 0x1800009a sshd 18396 331531 1 0 3 0x18100083 ttyin getty 85813 414959 1 0 3 0x18000088 kqread sshd 98612 140677 48096 73 2 0x19100010 syslogd 48096 211684 1 0 3 0x18100082 sbwait syslogd 73259 179129 1 0 3 0x18100080 kqread resolvd 46995 313602 10161 77 3 0x18100092 kqread dhcpleased 56271 483410 10161 77 3 0x18100092 kqread dhcpleased 10161 483468 1 0 3 0x18000080 kqread dhcpleased 58178 460019 0 0 3 0x14200 bored smr 9571 134987 0 0 2 0x14200 zerothread 31644 88139 0 0 3 0x14200 aiodoned aiodoned 50843 495746 0 0 3 0x14200 syncer update 23825 429761 0 0 3 0x14200 cleaner cleaner *36887 224784 0 0 7 0x14200 reaper 91012 497034 0 0 3 0x14200 pgdaemon pagedaemon 63478 506728 0 0 3 0x14200 bored viomb 25268 315741 0 0 3 0x40014200 acpi0 acpi0 5422 360442 0 0 3 0x40014200 idle1 77491 232359 0 0 3 0x14200 bored softnet3 60178 1004 0 0 3 0x14200 bored softnet2 91308 449092 0 0 3 0x14200 bored softnet1 43523 502565 0 0 3 0x14200 bored softnet0 52070 363699 0 0 3 0x14200 bored systqmp 98974 292684 0 0 3 0x14200 bored systq 15266 188434 0 0 3 0x14200 tmoslp softclockmp 31509 441500 0 0 3 0x40014200 tmoslp softclock 63651 506163 0 0 3 0x40014200 idle0 1 217503 0 0 3 0x8000082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 22157 (syz-executor.2) thread 0xffff80002a2aafb8 (63784) exclusive rrwlock inode r = 0 (0xfffffd80680f7918) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1157 #1 rw_enter+0x32d sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x91 sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:524 #4 ufs_ihashins+0x46 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1230 #6 ffs_inode_alloc+0x1e4 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_makeinode+0xb0 sys/ufs/ufs/ufs_vnops.c:1728 #8 ufs_create+0x45 sys/ufs/ufs/ufs_vnops.c:147 #9 VOP_CREATE+0xc0 sys/kern/vfs_vops.c:103 #10 vn_open+0x353 sys/kern/vfs_vnops.c:116 #11 doopenat+0x269 sys/kern/vfs_syscalls.c:1127 #12 syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline] #12 syscall+0x854 sys/arch/amd64/amd64/trap.c:577 #13 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80680f76f8) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1157 #1 rw_enter+0x32d sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x91 sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:524 #4 vn_lock+0x85 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0xd3 sys/kern/vfs_lookup.c:418 #6 namei+0x56a sys/kern/vfs_lookup.c:250 #7 vn_open+0x180 sys/kern/vfs_vnops.c:107 #8 doopenat+0x269 sys/kern/vfs_syscalls.c:1127 #9 syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline] #9 syscall+0x854 sys/arch/amd64/amd64/trap.c:577 #10 Xsyscall+0x128 Process 68021 (syz-executor.1) thread 0xffff80002e1119d0 (106315) exclusive rrwlock inode r = 0 (0xfffffd80680f7f78) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1157 #1 rw_enter+0x32d sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x91 sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:524 #4 ufs_ihashins+0x46 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1230 #6 ffs_inode_alloc+0x1e4 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0xe6 sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:394 #9 domkdirat+0x125 sys/kern/vfs_syscalls.c:3104 #10 syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline] #10 syscall+0x854 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8069bc22c8) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1157 #1 rw_enter+0x32d sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x91 sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:524 #4 vn_lock+0x85 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0xd3 sys/kern/vfs_lookup.c:418 #6 namei+0x56a sys/kern/vfs_lookup.c:250 #7 domkdirat+0x79 sys/kern/vfs_syscalls.c:3089 #8 syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline] #8 syscall+0x854 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 Process 98612 (syslogd) thread 0xffff8000ffffdc40 (140677) exclusive rrwlock inode r = 0 (0xfffffd806e74e1b0) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1157 #1 rw_enter+0x32d sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x91 sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:524 #4 vn_lock+0x85 sys/kern/vfs_vnops.c:564 #5 sys_fsync+0xf1 sys/kern/vfs_syscalls.c:2931 #6 syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline] #6 syscall+0x854 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 Process 36887 (reaper) thread 0xffff80002a149488 (224784) exclusive rwlock amaplk r = 0 (0xfffffd806827ed30) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1157 #1 amap_unref+0x2f sys/uvm/uvm_amap.c:1360 #2 uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1354 #3 uvm_map_teardown+0x2f8 sys/uvm/uvm_map.c:2554 #4 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3461 #5 reaper+0x197 sys/kern/kern_exit.c:475 #6 proc_trampoline+0x10 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10193 6427K 7011K 166960K 13186 0 pcb 17 14K 16K 166960K 266 0 rtable 162 6K 7K 166960K 856 0 pf 33 9K 10K 166960K 112 0 ifaddr 36 13K 15K 166960K 125 0 ifgroup 58 2K 2K 166960K 170 0 sysctl 2 0K 0K 166960K 2 0 counters 66 36K 37K 166960K 134 0 ioctlops 0 0K 4K 166960K 1565 0 iov 0 0K 16K 166960K 72 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1376 87K 87K 166960K 2563 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 34 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 82 0 dirhash 12 2K 3K 166960K 36 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 17 61K 89K 166960K 1271 0 sigio 0 0K 0K 166960K 26 0 proc 58 79K 103K 166960K 966 0 subproc 117 7K 7K 166960K 312 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 149 0 in_multi 61 4K 6K 166960K 279 0 ether_multi 1 0K 0K 166960K 9 0 mrt 0 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 91 413K 413K 166960K 91 0 exec 0 0K 1K 166960K 653 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 308 85K 109K 166960K 13068 0 UVM aobj 60 6K 6K 166960K 65 0 pinsyscall 38 76K 100K 166960K 2784 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 89 0 NDP 12 0K 1K 166960K 86 0 temp 76 6808K 6878K 166960K 42185 0 kqueue 12 18K 26K 166960K 144 0 SYN cache 2 16K 16K 166960K 2 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 120 182 0 178 2 1 1 2 0 8 0 rtentry 112 286 0 216 3 0 3 3 0 8 0 unpcb 144 862 0 849 6 5 1 4 0 8 0 syncache 336 9 0 9 4 4 0 1 0 8 0 tcpqe 32 18 0 18 1 1 0 1 0 8 0 tcpcb 808 331 0 326 6 5 1 2 0 8 0 arp 120 55 0 39 1 0 1 1 0 8 0 inpcb 384 1224 0 1215 14 12 2 8 0 8 1 nd6 136 70 0 54 1 0 1 1 0 8 0 pkpcb 40 6 0 6 5 5 0 1 0 8 0 kcovpl 48 24 0 15 1 0 1 1 0 8 0 ppxss 1168 12 0 12 4 4 0 1 0 8 0 pffrag 232 10 0 10 1 1 0 1 0 482 0 pffrnode 88 10 0 10 1 1 0 1 0 8 0 pffrent 40 144 0 144 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 pfstitem 24 94 0 89 1 0 1 1 0 8 0 pfstkey 128 94 0 89 2 1 1 2 0 8 0 pfstate 376 94 0 89 5 4 1 5 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1062 0 772 29 6 23 25 0 8 1 art_table 32 1063 0 772 4 0 4 4 0 8 0 art_node 16 285 0 221 1 0 1 1 0 8 0 sysvmsgpl 40 17 0 6 1 0 1 1 0 8 0 semapl 112 79 0 69 1 0 1 1 0 8 0 shmpl 112 62 0 5 2 0 2 2 0 8 0 dirhash 1024 33 0 16 3 0 3 3 0 8 0 dino2pl 256 3513 0 2001 96 0 96 96 0 8 0 ffsino 272 3514 0 2001 102 0 102 102 0 8 0 nchpl 144 5329 0 3590 67 0 67 67 0 8 0 uvmvnodes 80 4396 0 0 90 0 90 90 0 8 0 vnodes 216 4396 0 0 245 0 245 245 0 8 0 namei 1024 19636 0 19633 3 2 1 2 0 8 0 percpumem 16 81 0 34 1 0 1 1 0 8 0 vcpupl 3904 6 0 1 1 0 1 1 0 8 0 vmpool 696 14 0 9 1 0 1 1 0 8 0 kstatmem 264 92 0 68 3 0 3 3 0 8 0 scsiplug 72 3 0 3 2 2 0 1 0 8 0 scxspl 216 19531 0 19531 18 17 1 7 1 8 1 plimitpl 152 227 0 209 1 0 1 1 0 8 0 sigapl 424 1568 0 1493 9 0 9 9 0 8 0 futexpl 64 18135 0 18135 4 3 1 1 0 8 1 knotepl 120 467 0 0 11 0 11 11 0 8 0 kqueuepl 216 387 0 379 5 4 1 3 0 8 0 pipepl 320 336 0 305 3 0 3 3 0 8 0 fdescpl 496 1528 0 1500 6 1 5 5 0 8 0 filepl 152 9961 0 9706 26 15 11 19 0 8 0 lockfpl 104 434 0 432 1 0 1 1 0 8 0 lockfspl 48 182 0 180 1 0 1 1 0 8 0 sessionpl 144 39 0 21 1 0 1 1 0 8 0 pgrppl 48 63 0 45 1 0 1 1 0 8 0 ucredpl 104 1679 0 1668 1 0 1 1 0 8 0 zombiepl 144 1501 0 1493 1 0 1 1 0 8 0 processpl 1144 1568 0 1493 6 0 6 6 0 8 0 procpl 656 2799 0 2702 12 3 9 9 0 8 0 srpgc 96 7 0 7 3 3 0 1 0 8 0 sosppl 168 5 0 5 3 2 1 1 0 8 1 sockpl 664 2277 0 2251 21 18 3 15 0 8 0 mcl64k 65536 12 0 0 2 0 2 2 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 9 0 0 2 0 2 2 0 8 0 mcl4k 4096 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 344 0 0 43 0 43 43 0 8 0 mtagpl 96 21 0 0 1 0 1 1 0 8 0 mbufpl 256 457 0 0 26 0 26 26 0 8 0 bufpl 280 10183 0 2222 569 0 569 569 0 8 0 anonpl 24 387906 0 381321 139 49 90 98 0 186 25 amapchunkpl 152 45228 0 44519 83 39 44 52 0 158 13 amappl16 200 9774 0 9641 54 35 19 23 0 8 4 amappl15 192 16 0 16 1 1 0 1 0 8 0 amappl14 184 191 0 178 2 1 1 2 0 8 0 amappl13 176 15 0 15 1 1 0 1 0 8 0 amappl12 168 2403 0 2362 2 0 2 2 0 8 0 amappl11 160 55 0 45 1 0 1 1 0 8 0 amappl10 152 56 0 47 1 0 1 1 0 8 0 amappl9 144 309 0 308 1 0 1 1 0 8 0 amappl8 136 230 0 193 2 0 2 2 0 8 0 amappl7 128 54 0 39 1 0 1 1 0 8 0 amappl6 120 555 0 530 2 1 1 2 0 8 0 amappl5 112 229 0 215 1 0 1 1 0 8 0 amappl4 104 663 0 622 2 0 2 2 0 8 0 amappl3 96 7991 0 7898 3 0 3 3 0 8 0 amappl2 88 1941 0 1859 3 1 2 3 0 8 0 amappl1 80 13830 0 13248 22 9 13 22 0 8 0 amappl 88 12339 0 12135 6 0 6 6 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 64 0 5 2 0 2 2 0 8 0 uaddrrnd 24 1542 0 1503 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1542 0 1503 1 0 1 1 0 8 0 vmmpekpl 168 14938 0 14869 4 0 4 4 0 8 0 vmmpepl 168 117012 0 114949 148 47 101 112 0 357 2 vmsppl 440 1541 0 1502 7 2 5 5 0 8 0 rwobjpl 56 39803 0 34080 86 2 84 84 0 8 0 pdppl 4096 3091 0 3009 189 107 82 82 0 8 0 pvpl 32 45840 0 0 370 0 370 370 0 265 0 pmappl 248 1541 0 1502 4 1 3 3 0 8 0 pool(pmappl): free list modified: page 0xfffffd8067c55000; item ordinal 2; addr 0xfffffd8067c558b8 (p 0xfffffd8067c55000); offset 0x3c=0xdeafbeae extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 515 0 130 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82c80ff0) at x86_ipi_db+0x1e 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+0x27 end of kernel end trace frame: 0x7d0631fc1b60, count: -3 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x1c: addq $0x8,%rsp ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffffffff82e169c8,1,0) at witness_checkorder+0xc05 rw_enter_read(ffffffff82e169b8) at rw_enter_read+0x87 sys/kern/kern_rwlock.c:112 uvmfault_lookup(ffff80002a154fc0,0) at uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff80002a154fc0,ffff80002a154ff8,ffff80002a155020) at uvm_fault_check+0x3e sys/uvm/uvm_fault.c:672 uvm_fault(ffffffff82e168d8,fe000000000,0,1) at uvm_fault+0xf2 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff80002a155160,fe00000000b) at kpageflttrap+0x238 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff80002a155160) at kerntrap+0xf2 sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b witness_checkorder(fffffd8067c558c8,9,0) at witness_checkorder+0x1db sys/kern/subr_witness.c:803 mtx_enter(fffffd8067c558b8) at mtx_enter+0x3e sys/kern/kern_lock.c:265 pmap_page_remove(fffffd8007907420) at pmap_page_remove+0xa7 rcr3 machine/cpufunc.h:139 [inline] pmap_page_remove(fffffd8007907420) at pmap_page_remove+0xa7 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:425 [inline] pmap_page_remove(fffffd8007907420) at pmap_page_remove+0xa7 sys/arch/amd64/amd64/pmap.c:1950 uvm_anfree_list(fffffd8069ecb510,0) at uvm_anfree_list+0x98 amap_wipeout(fffffd806a22aeb0) at amap_wipeout+0x1af sys/uvm/uvm_amap.c:502 uvm_unmap_detach(ffff80002a155490,1) at uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1354 uvm_map_teardown(fffffd8065d1f538) at uvm_map_teardown+0x2f8 sys/uvm/uvm_map.c:2554 uvmspace_free(fffffd8065d1f538) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3461 reaper(ffff80002a149488) at reaper+0x197 sys/kern/kern_exit.c:475 end trace frame: 0x0, count: -18