panic: kernel diagnostic assertion "next != NULL && next->start <= entry->end" failed: file "/syzkaller/managers/setuid/kernel/sys/uvm/uvm_fault.c", line 1643 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *157953 98672 32767 0x10 0x4000000 1K syz-executor.3 32595 78022 32767 0x10 0x4000080 0 syz-executor.0 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff8258bfeb) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff82603adc,ffffffff8255f958,66b,ffffffff8256ebca) at __assert+0x25 sys/kern/subr_prf.c:161 uvm_fault_unwire_locked(fffffd806a61f5d8,20000000,20011000) at uvm_fault_unwire_locked+0x2eb sys/uvm/uvm_fault.c:1640 uvm_fault_unwire(fffffd806a61f5d8,20000000,20011000) at uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1601 sys_sysctl(ffff8000211577a8,ffff80002c9542e8,ffff80002c954340) at sys_sysctl+0x229 sys/kern/kern_sysctl.c:254 syscall(ffff80002c9543b0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002c9543b0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9c618e7c9e0, count: 7 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: kernel diagnostic assertion "next != NULL && next->start <= entry->end" failed: file "/syzkaller/managers/setuid/kernel/sys/uvm/uvm_fault.c", line 1643 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff8258bfeb) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff82603adc,ffffffff8255f958,66b,ffffffff8256ebca) at __assert+0x25 sys/kern/subr_prf.c:161 uvm_fault_unwire_locked(fffffd806a61f5d8,20000000,20011000) at uvm_fault_unwire_locked+0x2eb sys/uvm/uvm_fault.c:1640 uvm_fault_unwire(fffffd806a61f5d8,20000000,20011000) at uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1601 sys_sysctl(ffff8000211577a8,ffff80002c9542e8,ffff80002c954340) at sys_sysctl+0x229 sys/kern/kern_sysctl.c:254 syscall(ffff80002c9543b0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002c9543b0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9c618e7c9e0, count: -8 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002c954070 rbx 0xffff800020ce9bff rdx 0 rcx 0 rax 0xffff8000211577a8 r8 0x101010101010101 r9 0x8080808080808080 r10 0x3c115813edb19beb r11 0xae066d9abde5328d r12 0xffff800020ce9a00 r13 0 r14 0 r15 0x1 rip 0xffffffff81b4ad48 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002c954060 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.3) pid=157953 stat=onproc flags process=10 proc=4000000 pri=32, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff37a8,0xffffffff82ac0540 process=0xffff80002950b1f8 user=0xffff80002c94f000, vmspace=0xfffffd806a61f5d8 estcpu=32, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 98672 125559 3741 32767 2 0x10 syz-executor.3 98672 163189 3741 32767 2 0x4000010 syz-executor.3 98672 464697 3741 32767 2 0x4000010 syz-executor.3 *98672 157953 3741 32767 7 0x4000010 syz-executor.3 93428 254624 68863 32767 2 0x10 syz-executor.7 93428 389891 68863 32767 3 0x4000090 fsleep syz-executor.7 93428 113111 68863 32767 3 0x4000090 fsleep syz-executor.7 93428 459260 68863 32767 3 0x4000090 fsleep syz-executor.7 28080 487874 46536 32767 2 0x10 syz-executor.5 28080 111829 46536 32767 3 0x4000090 netio syz-executor.5 9358 70460 34924 32767 2 0x10 syz-executor.2 9358 41359 34924 32767 3 0x4000090 fsleep syz-executor.2 78022 184334 65909 32767 2 0x10 syz-executor.0 78022 32595 65909 32767 7 0x4000090 syz-executor.0 90737 117161 91150 32767 2 0x10 syz-executor.1 90737 375025 91150 32767 3 0x4000090 fsleep syz-executor.1 22760 198233 36529 32767 2 0x10 syz-executor.4 22760 314933 36529 32767 3 0x4000090 fsleep syz-executor.4 22760 210004 36529 32767 3 0x4000090 fsleep syz-executor.4 22760 142630 36529 32767 3 0x4000090 fsleep syz-executor.4 91150 15971 81937 32767 3 0x90 nanoslp syz-executor.1 81937 353580 46841 0 3 0x82 wait syz-executor.1 3741 170348 62057 32767 3 0x90 nanoslp syz-executor.3 62057 166386 46841 0 3 0x82 wait syz-executor.3 46536 337970 21971 32767 2 0x10 syz-executor.5 21971 386074 46841 0 3 0x82 wait syz-executor.5 3372 498967 0 0 3 0x14200 bored sosplice 68863 280511 86548 32767 3 0x90 nanoslp syz-executor.7 86548 252290 46841 0 3 0x82 wait syz-executor.7 3733 360187 59700 32767 2 0x10 syz-executor.6 36529 137071 73307 32767 3 0x90 nanoslp syz-executor.4 59700 69252 46841 0 3 0x82 wait syz-executor.6 34924 415994 77596 32767 3 0x90 nanoslp syz-executor.2 73307 247205 46841 0 3 0x82 wait syz-executor.4 77596 431823 46841 0 3 0x82 wait syz-executor.2 65909 404198 31526 32767 3 0x90 nanoslp syz-executor.0 31526 349909 46841 0 3 0x82 wait syz-executor.0 46841 447665 91080 0 3 0x82 thrsleep syz-fuzzer 46841 207497 91080 0 3 0x4000082 nanoslp syz-fuzzer 46841 495062 91080 0 3 0x4000082 thrsleep syz-fuzzer 46841 505150 91080 0 3 0x4000082 thrsleep syz-fuzzer 46841 20994 91080 0 3 0x4000082 thrsleep syz-fuzzer 46841 61665 91080 0 3 0x4000082 thrsleep syz-fuzzer 46841 265697 91080 0 3 0x4000082 thrsleep syz-fuzzer 46841 39584 91080 0 3 0x4000082 thrsleep syz-fuzzer 46841 464191 91080 0 3 0x4000082 kqread syz-fuzzer 91080 68475 20634 0 3 0x10008a sigsusp ksh 20634 108958 1029 0 3 0x9a kqread sshd 34464 138538 1 0 3 0x100083 ttyin getty 1029 444430 1 0 3 0x88 kqread sshd 81797 129876 74102 73 3 0x1100090 kqread syslogd 74102 82336 1 0 3 0x100082 netio syslogd 56407 382766 1 0 3 0x100080 kqread resolvd 3552 55047 16252 77 3 0x100092 kqread dhcpleased 74490 212514 16252 77 3 0x100092 kqread dhcpleased 16252 161986 1 0 3 0x80 kqread dhcpleased 3913 518034 0 0 3 0x14200 bored smr 1855 94610 0 0 2 0x14200 zerothread 16923 10970 0 0 3 0x14200 aiodoned aiodoned 66508 209887 0 0 3 0x14200 syncer update 96296 355473 0 0 3 0x14200 cleaner cleaner 26369 203785 0 0 3 0x14200 reaper reaper 83739 282498 0 0 3 0x14200 pgdaemon pagedaemon 64338 296574 0 0 3 0x14200 bored viomb 30261 511913 0 0 3 0x40014200 acpi0 acpi0 6303 253794 0 0 3 0x40014200 idle1 36479 97500 0 0 3 0x14200 bored softnet 68141 417728 0 0 3 0x14200 bored systqmp 33181 440966 0 0 3 0x14200 bored systq 77567 5202 0 0 3 0x40014200 bored softclock 24634 349353 0 0 3 0x40014200 idle0 1 346742 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 98672 (syz-executor.3) thread 0xffff8000211577a8 (157953) exclusive rwlock amaplk r = 0 (0xfffffd80641dd438) #0 witness_lock+0x44d #1 uvm_map_lock_entry+0x36 sys/uvm/uvm_map.c:508 #2 uvm_fault_unwire_locked+0x1e8 sys/uvm/uvm_fault.c:1655 #3 uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1601 #4 sys_sysctl+0x229 sys/kern/kern_sysctl.c:254 #5 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #5 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #6 Xsyscall+0x128 shared rwlock vmmaplk r = 0 (0xfffffd806a61f5f0) #0 witness_lock+0x44d #1 uvm_fault_unwire+0x31 sys/uvm/uvm_fault.c:1600 #2 sys_sysctl+0x229 sys/kern/kern_sysctl.c:254 #3 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #3 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #4 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82b30cc0) #0 witness_lock+0x44d #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x3d3 sys/kern/sched_bsd.c:416 #3 sleep_finish+0x198 sys/kern/kern_synch.c:437 #4 rw_enter+0x35a sys/kern/kern_rwlock.c:286 #5 vm_map_lock_ln+0xda sys/uvm/uvm_map.c:5458 #6 uvmfault_lookup+0xb9 sys/uvm/uvm_fault.c:1752 #7 uvm_fault_check+0x603 uvmfault_amapcopy sys/uvm/uvm_fault.c:236 [inline] #7 uvm_fault_check+0x603 sys/uvm/uvm_fault.c:712 #8 uvm_fault+0x102 sys/uvm/uvm_fault.c:602 #9 uvm_fault_wire+0x63 sys/uvm/uvm_fault.c:1580 #10 sys_sysctl+0x2d8 sys/kern/kern_sysctl.c:240 #11 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #11 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #12 Xsyscall+0x128 exclusive rwlock sysctllk r = 0 (0xffffffff82998610) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 sys_sysctl+0x1b3 sys/kern/kern_sysctl.c:233 #3 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #3 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #4 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10202 6411K 6419K 78643K 11309 0 pcb 13 10K 12K 78643K 15 0 rtable 272 7K 8K 78643K 1011 0 ifaddr 81 17K 17K 78643K 118 0 counters 56 35K 35K 78643K 66 0 ioctlops 0 0K 2K 78643K 83 0 iov 0 0K 32K 78643K 1201 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1271 79K 79K 78643K 2785 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 93 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 1084 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 25 93K 117K 78643K 6517 0 sigio 0 0K 0K 78643K 32 0 proc 59 87K 111K 78643K 1168 0 subproc 104 6K 6K 78643K 169 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 615 0 in_multi 99 6K 6K 78643K 206 0 ether_multi 1 0K 0K 78643K 13 0 mrt 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 229 1023K 1023K 78643K 229 0 exec 0 0K 2K 78643K 1614 0 tdb 3 0K 0K 78643K 3 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 427 96K 110K 78643K 85413 0 UVM aobj 131 4K 4K 78643K 136 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 277 0 NDP 11 0K 2K 78643K 42 0 temp 125 4711K 4775K 78643K 19287 0 kqueue 13 18K 33K 78643K 1248 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 805 0 802 14 12 2 3 0 8 1 rtentry 112 186 0 59 4 0 4 4 0 8 0 unpcb 136 4307 0 4292 35 30 5 9 0 8 4 syncache 296 77 0 77 13 12 1 1 0 8 1 tcpqe 32 42 0 42 11 11 0 1 0 8 0 tcpcb 736 2762 0 2753 78 71 7 13 0 8 5 arp 120 32 0 12 1 0 1 1 0 8 0 ipq 40 12 0 11 5 4 1 1 0 8 0 ipqe 40 242 0 241 5 4 1 1 0 8 0 inpcb 312 5867 0 5850 73 66 7 12 0 8 5 rttmr 72 10 0 7 1 0 1 1 0 8 0 ip6q 72 6 0 6 3 2 1 1 0 8 1 ip6af 40 10 0 10 3 2 1 1 0 8 1 nd6 48 52 0 16 1 0 1 1 0 8 0 kcovpl 48 13 0 5 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 846 0 234 40 1 39 39 0 8 0 art_table 32 847 0 234 5 0 5 5 0 8 0 art_node 16 185 0 68 1 0 1 1 0 8 0 semapl 112 1082 0 1072 1 0 1 1 0 8 0 shmpl 112 133 0 5 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 10192 0 8743 91 0 91 91 0 8 0 ffsino 272 10192 0 8743 97 0 97 97 0 8 0 nchpl 144 18988 0 17363 62 0 62 62 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 64997 0 64997 6 5 1 2 0 8 1 percpumem 16 45 0 5 1 0 1 1 0 8 0 scxspl 216 52100 0 52100 21 19 2 5 0 8 2 plimitpl 152 1050 0 1026 5 4 1 2 0 8 0 sigapl 424 6781 0 6730 7 0 7 7 0 8 0 futexpl 64 58826 0 58818 3 2 1 1 0 8 0 knotepl 120 764 0 0 15 0 15 15 0 8 0 kqueuepl 216 4281 0 4269 51 46 5 8 0 8 4 pipepl 336 6757 0 6729 73 61 12 13 0 8 9 fdescpl 496 6766 0 6730 6 0 6 6 0 8 0 filepl 152 54714 0 54469 91 72 19 24 0 8 9 lockfpl 104 583 0 581 1 0 1 1 0 8 0 lockfspl 48 184 0 182 1 0 1 1 0 8 0 sessionpl 144 28 0 12 1 0 1 1 0 8 0 pgrppl 48 75 0 59 1 0 1 1 0 8 0 ucredpl 96 8995 0 8977 1 0 1 1 0 8 0 zombiepl 144 6730 0 6730 1 0 1 1 0 8 1 processpl 1064 6781 0 6730 4 0 4 4 0 8 0 procpl 672 19334 0 19262 14 7 7 8 0 8 0 sosppl 168 84 0 83 7 6 1 1 0 8 0 sockpl 480 11276 0 11244 225 208 17 34 0 8 12 mcl64k 65536 20 0 0 3 0 3 3 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 9 0 0 1 0 1 1 0 8 0 mcl8k 8192 40 0 0 5 0 5 5 0 8 0 mcl4k 4096 41 0 0 5 2 3 3 0 8 0 mcl2k2 2112 8 0 0 1 0 1 1 0 8 0 mcl2k 2048 247 0 0 18 1 17 18 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 8986 0 0 553 0 553 553 0 8 0 bufpl 288 13438 0 7103 453 0 453 453 0 8 0 anonpl 24 2092553 0 2077263 234 131 103 126 0 186 0 amapchunkpl 152 207666 0 206792 87 52 35 46 0 158 0 amappl16 200 29951 0 29553 126 102 24 39 0 8 1 amappl15 192 97 0 92 1 0 1 1 0 8 0 amappl14 184 13 0 12 3 2 1 1 0 8 0 amappl13 176 1508 0 1504 1 0 1 1 0 8 0 amappl12 168 937 0 930 1 0 1 1 0 8 0 amappl11 160 1303 0 1290 1 0 1 1 0 8 0 amappl10 152 829 0 822 1 0 1 1 0 8 0 amappl9 144 2503 0 2492 1 0 1 1 0 8 0 amappl8 136 1000 0 890 5 1 4 4 0 8 0 amappl7 128 142 0 131 1 0 1 1 0 8 0 amappl6 120 2234 0 2208 2 1 1 2 0 8 0 amappl5 112 5965 0 5942 1 0 1 1 0 8 0 amappl4 104 2381 0 2349 2 0 2 2 0 8 0 amappl3 96 3045 0 3025 1 0 1 1 0 8 0 amappl2 88 2701 0 2653 3 1 2 3 0 8 0 amappl1 80 123825 0 123159 26 11 15 18 0 8 1 amappl 88 84599 0 84302 9 2 7 8 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 72 135 0 5 3 0 3 3 0 8 0 uaddrrnd 24 6766 0 6730 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 6766 0 6730 1 0 1 1 0 8 0 vmmpekpl 168 82113 0 82060 4 0 4 4 0 8 0 vmmpepl 168 634703 0 631863 195 67 128 137 0 357 0 vmsppl 368 6765 0 6730 4 0 4 4 0 8 0 rwobjpl 56 168574 0 161081 111 3 108 110 0 8 0 pdppl 4096 13539 0 13460 214 133 81 91 0 8 2 pvpl 32 3481643 0 3460827 403 221 182 259 0 265 1 pmappl 248 6765 0 6730 4 1 3 3 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1723 0 342 40 0 40 40 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff8292cff0) at x86_ipi_db+0x1a 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+0x23 __mp_lock(ffffffff82b30ab8) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82b30ab8) at __mp_lock+0x129 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82b30ab8,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x3d3 sys/kern/sched_bsd.c:416 sleep_finish(ffff80002e3b8690,1) at sleep_finish+0x198 sys/kern/kern_synch.c:437 rwsleep(ffff800021156a88,ffffffff82918fb0,120,ffffffff825843bd,0) at rwsleep+0xd5 sys/kern/kern_synch.c:317 futex_wait(6aa6554bf80,2,0,2) at futex_wait+0x13c sys/kern/sys_futex.c:260 sys_futex(ffff800021156a88,ffff80002e3b8820,ffff80002e3b8880) at sys_futex+0xf8 sys/kern/sys_futex.c:111 syscall(ffff80002e3b88f0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e3b88f0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6aafedd2890, count: 3 ddb{0}> trace x86_ipi_db(ffffffff8292cff0) at x86_ipi_db+0x1a 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+0x23 __mp_lock(ffffffff82b30ab8) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82b30ab8) at __mp_lock+0x129 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82b30ab8,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x3d3 sys/kern/sched_bsd.c:416 sleep_finish(ffff80002e3b8690,1) at sleep_finish+0x198 sys/kern/kern_synch.c:437 rwsleep(ffff800021156a88,ffffffff82918fb0,120,ffffffff825843bd,0) at rwsleep+0xd5 sys/kern/kern_synch.c:317 futex_wait(6aa6554bf80,2,0,2) at futex_wait+0x13c sys/kern/sys_futex.c:260 sys_futex(ffff800021156a88,ffff80002e3b8820,ffff80002e3b8880) at sys_futex+0xf8 sys/kern/sys_futex.c:111 syscall(ffff80002e3b88f0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e3b88f0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6aafedd2890, count: -12 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x18: addq $0x8,%rsp db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff8258bfeb) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff82603adc,ffffffff8255f958,66b,ffffffff8256ebca) at __assert+0x25 sys/kern/subr_prf.c:161 uvm_fault_unwire_locked(fffffd806a61f5d8,20000000,20011000) at uvm_fault_unwire_locked+0x2eb sys/uvm/uvm_fault.c:1640 uvm_fault_unwire(fffffd806a61f5d8,20000000,20011000) at uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1601 sys_sysctl(ffff8000211577a8,ffff80002c9542e8,ffff80002c954340) at sys_sysctl+0x229 sys/kern/kern_sysctl.c:254 syscall(ffff80002c9543b0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002c9543b0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9c618e7c9e0, count: 7 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff8258bfeb) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff82603adc,ffffffff8255f958,66b,ffffffff8256ebca) at __assert+0x25 sys/kern/subr_prf.c:161 uvm_fault_unwire_locked(fffffd806a61f5d8,20000000,20011000) at uvm_fault_unwire_locked+0x2eb sys/uvm/uvm_fault.c:1640 uvm_fault_unwire(fffffd806a61f5d8,20000000,20011000) at uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1601 sys_sysctl(ffff8000211577a8,ffff80002c9542e8,ffff80002c954340) at sys_sysctl+0x229 sys/kern/kern_sysctl.c:254 syscall(ffff80002c9543b0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002c9543b0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9c618e7c9e0, count: -8