panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 32086 29406 0 0 0 1 syz-executor *410567 17501 0 0 0 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830e066a) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff83096649,ffffffff83039501,90,ffffffff8309994e) at __assert+0x29 uvm_pagealloc_pg(fffffd8008841980,fffffd806be0c328,d972000,0) at uvm_pagealloc_pg+0x521 sys/uvm/uvm_page.c:695 uvm_pagealloc(fffffd806be0c328,d972000,0,3) at uvm_pagealloc+0x23e sys/uvm/uvm_page.c:912 pmap_get_ptp(fffffd806be0c2f8,1b2e420000) at pmap_get_ptp+0x1c6 pmap_enter(fffffd806be0c2f8,1b2e420000,6c008000,3,22) at pmap_enter+0x389 uvm_fault_lower(ffff80002a1322d0,ffff80002a132308,ffff80002a132250,0) at uvm_fault_lower+0xa2d sys/uvm/uvm_fault.c:1518 uvm_fault(fffffd806c81dc20,1b2e420000,0,2) at uvm_fault+0x301 sys/uvm/uvm_fault.c:637 upageflttrap(ffff80002a132450,1b2e420210) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002a132450) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x70af882979d0, count: 3 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830e066a) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff83096649,ffffffff83039501,90,ffffffff8309994e) at __assert+0x29 uvm_pagealloc_pg(fffffd8008841980,fffffd806be0c328,d972000,0) at uvm_pagealloc_pg+0x521 sys/uvm/uvm_page.c:695 uvm_pagealloc(fffffd806be0c328,d972000,0,3) at uvm_pagealloc+0x23e sys/uvm/uvm_page.c:912 pmap_get_ptp(fffffd806be0c2f8,1b2e420000) at pmap_get_ptp+0x1c6 pmap_enter(fffffd806be0c2f8,1b2e420000,6c008000,3,22) at pmap_enter+0x389 uvm_fault_lower(ffff80002a1322d0,ffff80002a132308,ffff80002a132250,0) at uvm_fault_lower+0xa2d sys/uvm/uvm_fault.c:1518 uvm_fault(fffffd806c81dc20,1b2e420000,0,2) at uvm_fault+0x301 sys/uvm/uvm_fault.c:637 upageflttrap(ffff80002a132450,1b2e420210) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002a132450) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x70af882979d0, count: -12 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a131df0 rbx 0xffffffff83433d87 cpu_info_full_primary+0x2d87 rdx 0 rcx 0xffff800037211c18 rax 0xffffffff83432ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x9e938002b934d28 r11 0x1c3b7146dbf32a91 r12 0xffffffff83433b88 cpu_info_full_primary+0x2b88 r13 0 r14 0 r15 0x1 rip 0xffffffff8124a355 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a131de0 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=410567 pid=17501 tcnt=2 stat=onproc flags process=0 proc=0 runpri=86, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800037211480,0xffff8000372119a0 process=0xffff800029fe9b38 user=0xffff80002a12d000, vmspace=0xfffffd806c81dc20 estcpu=36, cpticks=3, pctcpu=0.0, user=0, sys=3, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 29406 32086 42578 0 7 0 syz-executor 29406 166383 42578 0 2 0x4000080 syz-executor 29406 393156 42578 0 3 0x4000080 fsleep syz-executor 23354 164682 95534 0 2 0 syz-executor 23354 441689 95534 0 3 0x4000080 piperd syz-executor *17501 410567 62120 0 7 0 syz-executor 17501 25536 62120 0 3 0x4000080 fsleep syz-executor 32676 326303 99463 0 2 0 syz-executor 32676 508712 99463 0 3 0x4000080 lockf syz-executor 32676 112409 99463 0 3 0x4000080 lockf syz-executor 10691 86129 99960 0 3 0x80 nanoslp syz-executor 10691 356375 99960 0 3 0x4000080 fsleep syz-executor 10691 379607 99960 0 3 0x4000080 pipewr syz-executor 61043 434207 17322 0 3 0x80 nanoslp syz-executor 61043 34879 17322 0 3 0x4000080 kqsel syz-executor 61043 344774 17322 0 3 0x4000080 fsleep syz-executor 61043 247537 17322 0 3 0x4000080 fsleep syz-executor 62947 141710 34713 0 3 0x80 nanoslp syz-executor 62947 330775 34713 0 3 0x4000080 kqread syz-executor 62947 11729 34713 0 3 0x4000080 fsleep syz-executor 47040 247491 52684 0 3 0x82 nanoslp syz-executor 34713 150084 52684 0 3 0x82 nanoslp syz-executor 95534 238621 52684 0 3 0x82 nanoslp syz-executor 99463 8933 52684 0 3 0x82 nanoslp syz-executor 17322 58241 52684 0 3 0x82 nanoslp syz-executor 42578 483836 52684 0 3 0x82 nanoslp syz-executor 62120 387538 52684 0 3 0x82 nanoslp syz-executor 99960 257559 52684 0 3 0x82 nanoslp syz-executor 52823 393872 0 0 3 0x14280 nfsidl nfsio 74773 494214 0 0 3 0x14280 nfsidl nfsio 9375 344097 0 0 3 0x14280 nfsidl nfsio 86587 498203 0 0 3 0x14280 nfsidl nfsio 18857 263657 0 0 3 0x14280 nfsidl nfsio 29953 156027 0 0 3 0x14280 nfsidl nfsio 35008 97961 0 0 3 0x14280 nfsidl nfsio 92894 253379 0 0 3 0x14280 nfsidl nfsio 36700 229260 0 0 3 0x14280 nfsidl nfsio 92166 107653 0 0 3 0x14280 nfsidl nfsio 98798 328485 0 0 3 0x14280 nfsidl nfsio 4568 263760 0 0 3 0x14280 nfsidl nfsio 64983 292473 0 0 3 0x14280 nfsidl nfsio 15834 221543 0 0 3 0x14280 nfsidl nfsio 83363 221446 0 0 3 0x14280 nfsidl nfsio 27838 148384 0 0 3 0x14280 nfsidl nfsio 91131 119922 0 0 3 0x14280 nfsidl nfsio 94544 282893 0 0 3 0x14280 nfsidl nfsio 61578 378920 0 0 3 0x14280 nfsidl nfsio 51835 505728 0 0 3 0x14280 nfsidl nfsio 94914 392922 1 0 3 0x100083 ttyin getty 28968 327460 0 0 3 0x14200 bored sosplice 52684 395899 94469 0 2 0x2 syz-executor 94469 511675 84050 0 3 0x10008a sigsusp ksh 84050 439287 73939 0 3 0x98 kqread sshd-session 73939 348095 43817 0 3 0x92 kqread sshd-session 43817 322804 1 0 3 0x88 kqread sshd 90760 278321 15068 74 3 0x1100092 bpf pflogd 15068 252717 1 0 3 0x80 sbwait pflogd 65001 221129 15738 73 3 0x1100010 biowait syslogd 15738 401430 1 0 3 0x100082 sbwait syslogd 16651 478500 1 0 3 0x100080 kqread resolvd 12657 373710 6356 77 3 0x100092 kqread dhcpleased 58978 454423 6356 77 3 0x100092 kqread dhcpleased 6356 132682 1 0 3 0x80 kqread dhcpleased 57179 102634 0 0 3 0x14200 bored smr 39823 379167 0 0 2 0x14200 zerothread 15271 477166 0 0 3 0x14200 aiodoned aiodoned 85398 369361 0 0 3 0x14200 syncer update 28627 150819 0 0 3 0x14200 cleaner cleaner 72306 360202 0 0 3 0x14200 reaper reaper 77578 12388 0 0 3 0x14200 pgdaemon pagedaemon 61257 185039 0 0 3 0x14200 bored viomb 12540 283168 0 0 3 0x40014200 acpi0 acpi0 12377 336054 0 0 3 0x40014200 idle1 80567 328216 0 0 3 0x14200 bored softnet3 92236 22466 0 0 3 0x14200 bored softnet2 18052 90813 0 0 3 0x14200 bored softnet1 95808 156913 0 0 3 0x14200 bored softnet0 22664 321749 0 0 3 0x14200 bored systqmp 65129 65785 0 0 3 0x14200 bored systq 37970 446937 0 0 3 0x14200 tmoslp softclockmp 61036 499402 0 0 3 0x40014200 tmoslp softclock 72263 439126 0 0 3 0x40014200 idle0 1 409111 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806be0c308) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 pmap_enter+0x246 rcr3 machine/cpufunc.h:139 [inline] #3 pmap_enter+0x246 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:430 [inline] #3 pmap_enter+0x246 sys/arch/amd64/amd64/pmap.c:2756 #4 uvm_fault_lower+0xa2d sys/uvm/uvm_fault.c:1518 #5 uvm_fault+0x301 sys/uvm/uvm_fault.c:637 #6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #7 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #8 recall_trap+0x8 Process 17501 (syz-executor) thread 0xffff800037211c18 (410567) exclusive rwlock uobjlk r = 0 (0xfffffd806cd71518) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 uvm_fault_lower_lookup+0x54 sys/uvm/uvm_fault.c:1126 #3 uvm_fault_lower+0x74 sys/uvm/uvm_fault.c:1227 #4 uvm_fault+0x301 sys/uvm/uvm_fault.c:637 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #6 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #7 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd806c81dd10) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 #2 uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 #3 uvm_fault+0x112 sys/uvm/uvm_fault.c:600 #4 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #5 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #6 recall_trap+0x8 exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806be0c308) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 pmap_enter+0x246 rcr3 machine/cpufunc.h:139 [inline] #3 pmap_enter+0x246 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:430 [inline] #3 pmap_enter+0x246 sys/arch/amd64/amd64/pmap.c:2756 #4 uvm_fault_lower+0xa2d sys/uvm/uvm_fault.c:1518 #5 uvm_fault+0x301 sys/uvm/uvm_fault.c:637 #6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #7 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #8 recall_trap+0x8 Process 65001 (syslogd) thread 0xffff8000ffffd960 (221129) exclusive rrwlock inode r = 0 (0xfffffd806e49c1b0) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 sys_fsync+0x152 sys/kern/vfs_syscalls.c:2927 #6 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #6 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10367 10237K 10684K 166960K 12118 0 pcb 17 14K 16K 166960K 134 0 rtable 240 7K 7K 166960K 847 0 pf 41 19K 19K 166960K 89 0 ifaddr 44 7K 7K 166960K 110 0 ifgroup 60 2K 2K 166960K 132 0 counters 66 36K 36K 166960K 100 0 ioctlops 0 0K 4K 166960K 1600 0 iov 0 0K 13K 166960K 22 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1492 94K 94K 166960K 2116 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 5 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 47 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 18 65K 97K 166960K 662 0 sigio 0 0K 0K 166960K 9 0 proc 70 91K 128K 166960K 985 0 subproc 104 6K 6K 166960K 299 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 124 0 in_multi 99 7K 7K 166960K 281 0 ether_multi 1 0K 0K 166960K 4 0 mrt 0 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 319 1420K 1420K 166960K 319 0 exec 0 0K 1K 166960K 584 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 265 73K 93K 166960K 6895 0 UVM aobj 4 2K 2K 166960K 4 0 pinsyscall 43 86K 103K 166960K 2135 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 21 0 NDP 14 0K 1K 166960K 76 0 temp 48 6816K 6892K 166960K 20635 0 kqueue 17 28K 30K 166960K 75 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> 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 86 0 81 1 0 1 1 0 8 0 rtentry 112 288 0 177 5 1 4 4 0 8 0 unpcb 144 290 0 271 2 1 1 2 0 8 0 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 808 111 0 105 2 0 2 2 0 8 1 arp 120 51 0 33 1 0 1 1 0 8 0 inpcb 336 692 0 683 18 6 12 12 0 8 10 nd6 136 73 0 49 1 0 1 1 0 8 0 pkpcb 40 4 0 4 2 1 1 1 0 8 1 kcovpl 48 23 0 15 1 0 1 1 0 8 0 pfstscr 40 3 0 3 2 1 1 1 0 8 1 pffrag 232 2 0 0 1 0 1 1 0 482 0 pffrnode 88 2 0 0 1 0 1 1 0 8 0 pffrent 40 3 0 1 1 0 1 1 0 8 0 pfosfp 40 1429 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1429 0 714 21 0 21 21 0 8 0 pfstitem 24 51 0 19 1 0 1 1 0 8 0 pfstkey 128 54 0 20 2 0 2 2 0 8 0 pfstate 376 50 0 20 4 0 4 4 0 8 0 pfrule 1344 25 0 19 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 1135 0 680 32 3 29 29 0 8 0 art_table 32 1137 0 680 4 0 4 4 0 8 0 art_node 16 287 0 186 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 6 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 45 0 35 1 0 1 1 0 8 0 shmpl 112 1 0 0 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2177 0 648 96 0 96 96 0 8 0 ffsino 272 2177 0 648 103 0 103 103 0 8 0 nchpl 144 2791 0 1085 64 0 64 64 0 8 0 uvmvnodes 80 2884 0 0 59 0 59 59 0 8 0 vnodes 216 2884 0 0 161 0 161 161 0 8 0 namei 1024 11222 0 11222 2 1 1 1 0 8 1 percpumem 16 64 0 17 1 0 1 1 0 8 0 vcpupl 3904 3 0 1 1 0 1 1 0 8 0 vmpool 696 3 0 1 1 0 1 1 0 8 0 kstatmem 264 60 0 34 2 0 2 2 0 8 0 scsiplug 72 3 0 3 1 1 0 1 0 8 0 scxspl 216 13704 0 13703 10 9 1 8 1 8 0 plimitpl 152 190 0 172 1 0 1 1 0 8 0 sigapl 424 956 0 885 10 1 9 9 0 8 0 futexpl 64 4712 0 4706 3 2 1 1 0 8 0 knotepl 120 325 0 0 10 0 10 10 0 8 0 kqueuepl 216 209 0 132 5 0 5 5 0 8 0 pipepl 320 183 0 154 3 0 3 3 0 8 0 fdescpl 496 916 0 884 6 1 5 6 0 8 0 filepl 152 4975 0 4520 26 5 21 21 0 8 3 lockfpl 104 463 0 393 2 0 2 2 0 8 0 lockfspl 48 108 0 40 1 0 1 1 0 8 0 sessionpl 144 38 0 29 1 0 1 1 0 8 0 pgrppl 48 69 0 52 1 0 1 1 0 8 0 ucredpl 104 738 0 723 1 0 1 1 0 8 0 zombiepl 144 886 0 885 1 0 1 1 0 8 0 processpl 1160 956 0 885 6 0 6 6 0 8 0 procpl 648 1502 0 1418 9 1 8 8 0 8 0 sosppl 168 2 0 2 2 1 1 1 0 8 1 sockpl 664 1074 0 1041 19 5 14 14 0 8 10 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 231 0 0 29 0 29 29 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 283 0 0 17 0 17 17 0 8 0 bufpl 280 5955 0 100 419 0 419 419 0 8 0 anonpl 24 168869 0 164742 63 6 57 57 0 185 30 amapchunkpl 152 21897 0 21299 39 5 34 39 0 158 11 amappl16 200 3294 0 3261 17 14 3 15 0 8 1 amappl15 192 8 0 8 1 1 0 1 0 8 0 amappl14 184 176 0 164 1 0 1 1 0 8 0 amappl13 176 11 0 11 1 1 0 1 0 8 0 amappl12 168 1826 0 1793 4 2 2 3 0 8 0 amappl11 160 55 0 41 1 0 1 1 0 8 0 amappl10 152 8 0 8 1 1 0 1 0 8 0 amappl9 144 146 0 145 1 0 1 1 0 8 0 amappl8 136 30 0 27 1 0 1 1 0 8 0 amappl7 128 163 0 151 1 0 1 1 0 8 0 amappl6 120 311 0 310 1 0 1 1 0 8 0 amappl5 112 186 0 175 1 0 1 1 0 8 0 amappl4 104 436 0 417 1 0 1 1 0 8 0 amappl3 96 4288 0 4156 5 1 4 4 0 8 0 amappl2 88 825 0 760 2 0 2 2 0 8 0 amappl1 80 10287 0 9685 16 2 14 14 0 8 1 amappl 88 6391 0 6190 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 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 3 0 0 1 0 1 1 0 8 0 uaddrrnd 24 919 0 885 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 919 0 885 1 0 1 1 0 8 0 vmmpekpl 168 9194 0 9147 4 1 3 3 0 8 0 vmmpepl 168 62893 0 60902 96 9 87 94 0 357 0 vmsppl 440 918 0 885 6 2 4 5 0 8 0 rwobjpl 56 23335 0 19447 58 3 55 55 0 8 0 pdppl 4096 1845 0 1772 118 44 74 87 0 8 1 pvpl 32 28999 0 0 236 2 234 234 0 265 0 pmappl 248 918 0 885 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 428 0 57 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830e066a) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff83096649,ffffffff83039501,90,ffffffff8309994e) at __assert+0x29 uvm_pagealloc_pg(fffffd8008841980,fffffd806be0c328,d972000,0) at uvm_pagealloc_pg+0x521 sys/uvm/uvm_page.c:695 uvm_pagealloc(fffffd806be0c328,d972000,0,3) at uvm_pagealloc+0x23e sys/uvm/uvm_page.c:912 pmap_get_ptp(fffffd806be0c2f8,1b2e420000) at pmap_get_ptp+0x1c6 pmap_enter(fffffd806be0c2f8,1b2e420000,6c008000,3,22) at pmap_enter+0x389 uvm_fault_lower(ffff80002a1322d0,ffff80002a132308,ffff80002a132250,0) at uvm_fault_lower+0xa2d sys/uvm/uvm_fault.c:1518 uvm_fault(fffffd806c81dc20,1b2e420000,0,2) at uvm_fault+0x301 sys/uvm/uvm_fault.c:637 upageflttrap(ffff80002a132450,1b2e420210) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002a132450) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x70af882979d0, count: -12 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff800029b7bff0) 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 end of kernel end trace frame: 0x7ac5e0a441b0, count: 12 ddb{1}> trace x86_ipi_db(ffff800029b7bff0) 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 end of kernel end trace frame: 0x7ac5e0a441b0, count: -3