login: panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144 Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *139180 19027 0 0 0 0 syz-executor.6 500486 11012 0 0x14000 0x200 1 reaper db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82874da8) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff828f7ddc,ffffffff8285d1c5,90,ffffffff82843006) at __assert+0x29 sys/kern/subr_prf.c:157 uvm_pagealloc_pg(fffffd8007811700,fffffd80676c1b08,1c80c000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline] uvm_pagealloc_pg(fffffd8007811700,fffffd80676c1b08,1c80c000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:709 uvm_pagealloc(fffffd80676c1b08,1c80c000,0,3) at uvm_pagealloc+0x1ec sys/uvm/uvm_page.c:917 pmap_get_ptp(fffffd80676c1ab8,72031cade000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1215 pmap_enter(fffffd80676c1ab8,72031cade000,73827000,1,20) at pmap_enter+0x2be sys/arch/amd64/amd64/pmap.c:2722 uvm_fault_upper_lookup(ffff80002a27cdc0,ffff80002a27cdf8,ffff80002a27ccc0,ffff80002a27cd40) at uvm_fault_upper_lookup+0x2c0 sys/uvm/uvm_fault.c:895 uvm_fault(fffffd8008b5aae0,72031cadf000,0,1) at uvm_fault+0x129 sys/uvm/uvm_fault.c:605 upageflttrap(ffff80002a27cf40,72031cadf610) at upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002a27cf40) at usertrap+0x226 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x72031cadf630, 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+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82874da8) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff828f7ddc,ffffffff8285d1c5,90,ffffffff82843006) at __assert+0x29 sys/kern/subr_prf.c:157 uvm_pagealloc_pg(fffffd8007811700,fffffd80676c1b08,1c80c000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline] uvm_pagealloc_pg(fffffd8007811700,fffffd80676c1b08,1c80c000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:709 uvm_pagealloc(fffffd80676c1b08,1c80c000,0,3) at uvm_pagealloc+0x1ec sys/uvm/uvm_page.c:917 pmap_get_ptp(fffffd80676c1ab8,72031cade000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1215 pmap_enter(fffffd80676c1ab8,72031cade000,73827000,1,20) at pmap_enter+0x2be sys/arch/amd64/amd64/pmap.c:2722 uvm_fault_upper_lookup(ffff80002a27cdc0,ffff80002a27cdf8,ffff80002a27ccc0,ffff80002a27cd40) at uvm_fault_upper_lookup+0x2c0 sys/uvm/uvm_fault.c:895 uvm_fault(fffffd8008b5aae0,72031cadf000,0,1) at uvm_fault+0x129 sys/uvm/uvm_fault.c:605 upageflttrap(ffff80002a27cf40,72031cadf610) at upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002a27cf40) at usertrap+0x226 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x72031cadf630, count: -12 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a27c8e0 rbx 0xffffffff82d3eba7 cpu_info_full_primary+0x2ba7 rdx 0 rcx 0xffff80002a24a7f8 rax 0xffffffff82d3dff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x4c08d47ead38f9a5 r11 0xa6d5c5b0d86e06a9 r12 0xffffffff82d3e9a8 cpu_info_full_primary+0x29a8 r13 0 r14 0 r15 0x1 rip 0xffffffff8215fddc db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002a27c8d0 ss 0 db_enter+0x1c: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.6) tid=139180 pid=19027 tcnt=3 stat=onproc flags process=0 proc=0 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a24a000,0xffff80002a1b02c0 process=0xffff8000ffff51d8 user=0xffff80002a277000, vmspace=0xfffffd8008b5aae0 estcpu=36, cpticks=7, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 99413 165569 68984 0 2 0 syz-executor.2 54860 454573 67206 0 2 0 syz-executor.4 38112 120633 42729 0 2 0 syz-executor.5 38112 312929 42729 0 3 0x4000080 fsleep syz-executor.5 *19027 139180 27736 0 7 0 syz-executor.6 19027 428923 27736 0 3 0x4000080 fifow syz-executor.6 19027 268660 27736 0 3 0x4000080 fsleep syz-executor.6 11360 254201 47512 0 3 0x80 nanoslp syz-executor.3 11360 246378 47512 0 3 0x4000080 netcon2 syz-executor.3 9711 13966 1 0 3 0x100083 ttyin getty 63738 455587 52624 0 3 0x82 nanoslp syz-executor.0 68984 318475 52624 0 3 0x82 nanoslp syz-executor.2 67206 78974 52624 0 3 0x82 nanoslp syz-executor.4 42729 28462 52624 0 3 0x82 nanoslp syz-executor.5 47512 503074 52624 0 3 0x82 nanoslp syz-executor.3 27736 419759 52624 0 2 0x482 syz-executor.6 5481 307496 52624 0 3 0x2 biowait syz-executor.1 30780 500646 0 0 3 0x14280 nfsidl nfsio 32758 476536 0 0 3 0x14280 nfsidl nfsio 67754 417640 0 0 3 0x14280 nfsidl nfsio 6566 418912 0 0 3 0x14280 nfsidl nfsio 28393 7056 0 0 3 0x14280 nfsidl nfsio 93777 226239 0 0 3 0x14280 nfsidl nfsio 65849 42196 0 0 3 0x14280 nfsidl nfsio 67872 149223 0 0 3 0x14280 nfsidl nfsio 87749 329666 0 0 3 0x14280 nfsidl nfsio 15564 349844 0 0 3 0x14280 nfsidl nfsio 89757 58792 0 0 3 0x14280 nfsidl nfsio 26750 248755 0 0 3 0x14280 nfsidl nfsio 85997 27688 0 0 3 0x14280 nfsidl nfsio 99538 330958 0 0 3 0x14280 nfsidl nfsio 77411 205484 0 0 3 0x14280 nfsidl nfsio 14563 20663 0 0 3 0x14280 nfsidl nfsio 73673 212778 0 0 3 0x14280 nfsidl nfsio 6661 178606 0 0 3 0x14280 nfsidl nfsio 73621 357978 0 0 3 0x14280 nfsidl nfsio 79938 297649 0 0 3 0x14280 nfsidl nfsio 36157 401843 0 0 3 0x14200 bored sosplice 55042 513806 52624 0 3 0x82 nanoslp syz-executor.7 52624 293034 51605 0 3 0x2000082 wait syz-fuzzer 52624 251973 51605 0 3 0x6000082 nanoslp syz-fuzzer 52624 126025 51605 0 3 0x6000082 thrsleep syz-fuzzer 52624 403307 51605 0 3 0x6000082 thrsleep syz-fuzzer 52624 171523 51605 0 3 0x6000082 wait syz-fuzzer 52624 517343 51605 0 3 0x6000082 thrsleep syz-fuzzer 52624 361909 51605 0 3 0x6000082 wait syz-fuzzer 52624 228994 51605 0 3 0x6000082 wait syz-fuzzer 52624 402026 51605 0 3 0x6000082 kqread syz-fuzzer 52624 438239 51605 0 3 0x6000082 wait syz-fuzzer 52624 446089 51605 0 3 0x6000082 wait syz-fuzzer 52624 392596 51605 0 3 0x6000082 thrsleep syz-fuzzer 52624 308584 51605 0 3 0x6000082 wait syz-fuzzer 52624 421975 51605 0 3 0x6000082 wait syz-fuzzer 52624 16893 51605 0 3 0x6000082 thrsleep syz-fuzzer 52624 27982 51605 0 3 0x6000082 thrsleep syz-fuzzer 51605 360602 71750 0 3 0x10008a sigsusp ksh 71750 514435 74388 0 3 0x9a kqread sshd 74388 217807 1 0 3 0x88 kqread sshd 50804 135574 86972 74 3 0x1100092 bpf pflogd 86972 14932 1 0 3 0x80 netio pflogd 20187 217452 88392 73 3 0x1100090 kqread syslogd 88392 419194 1 0 3 0x100082 netio syslogd 66101 337397 1 0 3 0x100080 kqread resolvd 52304 222042 31640 77 3 0x100092 kqread dhcpleased 44919 394347 31640 77 3 0x100092 kqread dhcpleased 31640 75879 1 0 3 0x80 kqread dhcpleased 58009 359807 0 0 3 0x14200 bored smr 41107 339632 0 0 2 0x14200 zerothread 57042 161721 0 0 3 0x14200 aiodoned aiodoned 33839 464721 0 0 3 0x14200 syncer update 38227 155620 0 0 3 0x14200 cleaner cleaner 11012 500486 0 0 7 0x14200 reaper 2397 488158 0 0 3 0x14200 pgdaemon pagedaemon 14944 495420 0 0 3 0x14200 bored viomb 35011 73478 0 0 3 0x40014200 acpi0 acpi0 21670 233023 0 0 3 0x40014200 idle1 25357 130152 0 0 3 0x14200 bored softnet3 11487 224819 0 0 3 0x14200 bored softnet2 28625 234799 0 0 3 0x14200 bored softnet1 32641 441872 0 0 3 0x14200 bored softnet0 33916 268091 0 0 3 0x14200 bored systqmp 92534 317233 0 0 3 0x14200 bored systq 87530 356891 0 0 3 0x14200 tmoslp softclockmp 82733 220554 0 0 3 0x40014200 tmoslp softclock 9454 161905 0 0 3 0x40014200 idle0 1 343445 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd80676c1ac8) #0 witness_lock+0x447 #1 mtx_enter_try+0x104 #2 mtx_enter+0x4f sys/kern/kern_lock.c:266 #3 pmap_enter+0x1c3 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:423 [inline] #3 pmap_enter+0x1c3 sys/arch/amd64/amd64/pmap.c:2716 #4 uvm_fault_upper_lookup+0x2c0 sys/uvm/uvm_fault.c:895 #5 uvm_fault+0x129 sys/uvm/uvm_fault.c:605 #6 upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188 #7 usertrap+0x226 sys/arch/amd64/amd64/trap.c:436 #8 recall_trap+0x8 CPU 1: exclusive kernel: protection fault trap, code=0 Faulted in DDB; continuing... ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10215 6505K 7579K 166960K 35521 0 pcb 15 20K 22K 166960K 2147 0 rtable 147 4K 7K 166960K 1509 0 pf 29 9K 10K 166960K 166 0 ifaddr 457 119K 121K 166960K 601 0 ifgroup 48 2K 2K 166960K 286 0 sysctl 3 0K 0K 166960K 3 0 counters 60 35K 36K 166960K 182 0 ioctlops 0 0K 4K 166960K 3672 0 iov 0 0K 16K 166960K 1330 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 1 0 vnodes 1591 99K 100K 166960K 12447 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 484 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 1345 0 dirhash 12 2K 2K 166960K 57 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 15 53K 85K 166960K 23822 0 sigio 0 0K 0K 166960K 310 0 proc 69 91K 115K 166960K 1813 0 subproc 104 6K 6K 166960K 364 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 1261 0 in_multi 55 4K 7K 166960K 465 0 ether_multi 1 0K 0K 166960K 4 0 mrt 1 0K 0K 166960K 5 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 169 758K 758K 166960K 169 0 exec 0 0K 1K 166960K 1454 0 pfkey data 0 0K 0K 166960K 5 0 tdb 3 0K 0K 166960K 3 0 pagedep 1 8K 8K 166960K 1 0 inodedep 1 32K 32K 166960K 1 0 newblk 1 0K 0K 166960K 1 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 421 93K 109K 166960K 223651 0 UVM aobj 131 4K 4K 166960K 163 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 299 0 NDP 10 0K 2K 166960K 127 0 temp 74 6712K 6840K 166960K 109508 0 kqueue 12 18K 34K 166960K 1133 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 1691 0 1688 8 7 1 3 0 8 0 rtentry 112 507 0 442 5 2 3 4 0 8 0 unpcb 144 8461 0 8444 75 74 1 6 0 8 0 syncache 312 128 0 128 9 9 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 476 0 476 10 10 0 2 0 8 0 tcpcb 808 5155 0 5145 104 100 4 11 0 8 2 arp 120 73 0 63 1 0 1 1 0 8 0 inpcb 368 24504 0 24489 167 159 8 14 0 8 6 nd6 136 85 0 73 1 0 1 1 0 8 0 pkpcb 40 21 0 21 7 7 0 1 0 8 0 kcovpl 48 28 0 20 1 0 1 1 0 8 0 ppxss 1256 5 0 5 2 2 0 1 0 8 0 pffrag 232 28 0 28 6 6 0 1 0 482 0 pffrnode 88 28 0 28 6 6 0 1 0 8 0 pffrent 40 66 0 66 6 6 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 24 364 0 291 1 0 1 1 0 8 0 pfstkey 128 364 0 291 4 1 3 3 0 8 0 pfstate 376 364 0 291 15 6 9 9 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 2188 0 1909 48 27 21 29 0 8 0 art_table 32 2189 0 1909 4 0 4 4 0 8 0 art_node 16 491 0 433 1 0 1 1 0 8 0 sysvmsgpl 40 20 0 0 1 0 1 1 0 8 0 semapl 112 1343 0 1333 1 0 1 1 0 8 0 shmpl 112 160 0 32 4 0 4 4 0 8 0 dirhash 1024 47 0 30 3 0 3 3 0 8 0 dino2pl 256 30541 0 29063 93 0 93 93 0 8 0 ffsino 272 30541 0 29063 99 0 99 99 0 8 0 nchpl 144 60929 0 59277 64 0 64 64 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 168981 0 168980 5 4 1 2 0 8 0 percpumem 16 105 0 61 1 0 1 1 0 8 0 vcpupl 2048 5 0 1 1 0 1 1 0 8 0 vmpool 696 13 0 9 1 0 1 1 0 8 0 kstatmem 264 142 0 122 2 0 2 2 0 8 0 scxspl 216 168729 0 168728 29 28 1 8 1 8 0 plimitpl 152 599 0 583 1 0 1 1 0 8 0 sigapl 424 24176 0 24107 8 0 8 8 0 8 0 futexpl 64 153797 0 153795 3 2 1 1 0 8 0 knotepl 120 1602 0 0 49 1 48 49 0 8 1 kqueuepl 216 3174 0 3166 68 67 1 8 0 8 0 pipepl 320 3192 0 3164 85 82 3 13 0 8 0 fdescpl 496 24137 0 24109 8 4 4 5 0 8 0 filepl 152 110510 0 110265 155 142 13 21 0 8 2 lockfpl 104 6313 0 6311 5 4 1 2 0 8 0 lockfspl 48 2438 0 2436 1 0 1 1 0 8 0 sessionpl 144 46 0 29 1 0 1 1 0 8 0 pgrppl 48 389 0 372 1 0 1 1 0 8 0 ucredpl 104 9706 0 9694 1 0 1 1 0 8 0 zombiepl 144 24109 0 24107 2 1 1 1 0 8 0 processpl 1136 24176 0 24107 7 1 6 6 0 8 0 procpl 680 60082 0 59994 20 11 9 10 0 8 0 srpgc 96 37 0 37 12 12 0 1 0 8 0 sosppl 168 155 0 153 12 11 1 2 0 8 0 sockpl 488 34688 0 34653 387 374 13 33 0 8 8 mcl64k 65536 21 0 0 3 1 2 3 0 8 0 mcl16k 16384 42 0 0 4 1 3 3 0 8 0 mcl12k 12288 18 0 0 2 0 2 2 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 21 0 0 3 0 3 3 0 8 0 mcl4k 4096 41 0 0 3 0 3 3 0 8 0 mcl2k2 2112 10 0 0 1 0 1 1 0 8 0 mcl2k 2048 781 0 0 38 5 33 38 0 8 0 mtagpl 96 758 0 0 11 0 11 11 0 8 0 mbufpl 256 1275 0 0 47 0 47 47 0 8 0 bufpl 288 33242 0 26923 452 0 452 452 0 8 0 anonpl 24 2888461 0 2876867 190 89 101 113 0 186 0 amapchunkpl 152 703353 0 702562 78 41 37 46 0 158 1 amappl16 200 90818 0 90523 170 142 28 41 0 8 8 amappl15 192 39 0 39 2 2 0 1 0 8 0 amappl14 184 267 0 249 2 1 1 2 0 8 0 amappl13 176 81 0 81 2 2 0 1 0 8 0 amappl12 168 25248 0 25213 3 1 2 2 0 8 0 amappl11 160 56 0 42 1 0 1 1 0 8 0 amappl10 152 62 0 46 2 1 1 1 0 8 0 amappl9 144 226 0 224 1 0 1 1 0 8 0 amappl8 136 852 0 657 8 1 7 7 0 8 0 amappl7 128 295 0 267 2 0 2 2 0 8 0 amappl6 120 636 0 619 1 0 1 1 0 8 0 amappl5 112 337 0 326 1 0 1 1 0 8 0 amappl4 104 845 0 804 7 5 2 2 0 8 0 amappl3 96 139510 0 139422 4 1 3 3 0 8 0 amappl2 88 25306 0 25225 3 1 2 3 0 8 0 amappl1 80 91788 0 91237 23 10 13 23 0 8 0 amappl 88 222415 0 222185 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 72 162 0 32 3 0 3 3 0 8 0 uaddrrnd 24 24150 0 24118 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 24150 0 24118 1 0 1 1 0 8 0 vmmpekpl 168 170722 0 170645 4 0 4 4 0 8 0 vmmpepl 168 1419929 0 1417585 371 244 127 140 0 357 4 vmsppl 464 24149 0 24118 5 0 5 5 0 8 0 rwobjpl 56 362806 0 355225 126 13 113 114 0 8 0 pdppl 4096 48307 0 48240 560 488 72 79 0 8 5 pvpl 32 46331 0 0 375 1 374 374 0 265 0 pmappl 248 24149 0 24118 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1665 0 809 25 0 25 25 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82874da8) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff828f7ddc,ffffffff8285d1c5,90,ffffffff82843006) at __assert+0x29 sys/kern/subr_prf.c:157 uvm_pagealloc_pg(fffffd8007811700,fffffd80676c1b08,1c80c000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline] uvm_pagealloc_pg(fffffd8007811700,fffffd80676c1b08,1c80c000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:709 uvm_pagealloc(fffffd80676c1b08,1c80c000,0,3) at uvm_pagealloc+0x1ec sys/uvm/uvm_page.c:917 pmap_get_ptp(fffffd80676c1ab8,72031cade000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1215 pmap_enter(fffffd80676c1ab8,72031cade000,73827000,1,20) at pmap_enter+0x2be sys/arch/amd64/amd64/pmap.c:2722 uvm_fault_upper_lookup(ffff80002a27cdc0,ffff80002a27cdf8,ffff80002a27ccc0,ffff80002a27cd40) at uvm_fault_upper_lookup+0x2c0 sys/uvm/uvm_fault.c:895 uvm_fault(fffffd8008b5aae0,72031cadf000,0,1) at uvm_fault+0x129 sys/uvm/uvm_fault.c:605 upageflttrap(ffff80002a27cf40,72031cadf610) at upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002a27cf40) at usertrap+0x226 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x72031cadf630, count: -12 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffff800029cfbff0) 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 mtx_enter_try(ffffffff82c5d5f0) at mtx_enter_try msleep(ffffffff82d4af38,ffffffff82c5d5f0,4,ffffffff82934c7f,0) at msleep+0x1f1 sys/kern/kern_synch.c:239 reaper(ffff80002a155ff8) at reaper+0xdb sys/kern/kern_exit.c:434 end trace frame: 0x0, count: 9 ddb{1}> trace x86_ipi_db(ffff800029cfbff0) 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 mtx_enter_try(ffffffff82c5d5f0) at mtx_enter_try msleep(ffffffff82d4af38,ffffffff82c5d5f0,4,ffffffff82934c7f,0) at msleep+0x1f1 sys/kern/kern_synch.c:239 reaper(ffff80002a155ff8) at reaper+0xdb sys/kern/kern_exit.c:434 end trace frame: 0x0, count: -6