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 157195 52965 32767 0x10 0x4000000 0 syz-executor.1 *285808 52965 32767 0x10 0x4000000 1K syz-executor.1 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff8257189e) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff825ea8fa,ffffffff825488d3,66b,ffffffff825585ce) at __assert+0x25 sys/kern/subr_prf.c:161 uvm_fault_unwire_locked(fffffd8069f05a20,20000000,20011000) at uvm_fault_unwire_locked+0x2eb sys/uvm/uvm_fault.c:1640 uvm_fault_unwire(fffffd8069f05a20,20000000,20011000) at uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1601 sys_sysctl(ffff8000fffee548,ffff8000211f62b8,ffff8000211f6310) at sys_sysctl+0x229 sys/kern/kern_sysctl.c:254 syscall(ffff8000211f6380) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000211f6380) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x648ae759be0, 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(ffffffff8257189e) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff825ea8fa,ffffffff825488d3,66b,ffffffff825585ce) at __assert+0x25 sys/kern/subr_prf.c:161 uvm_fault_unwire_locked(fffffd8069f05a20,20000000,20011000) at uvm_fault_unwire_locked+0x2eb sys/uvm/uvm_fault.c:1640 uvm_fault_unwire(fffffd8069f05a20,20000000,20011000) at uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1601 sys_sysctl(ffff8000fffee548,ffff8000211f62b8,ffff8000211f6310) at sys_sysctl+0x229 sys/kern/kern_sysctl.c:254 syscall(ffff8000211f6380) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000211f6380) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x648ae759be0, count: -8 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff8000211f6040 rbx 0xffff800020ce9bff rdx 0 rcx 0 rax 0xffff8000fffee548 r8 0x101010101010101 r9 0x8080808080808080 r10 0xa16c4a253eb5935 r11 0xf80f40c7ecf72d02 r12 0xffff800020ce9a00 r13 0 r14 0 r15 0x1 rip 0xffffffff81d872c8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff8000211f6030 ss 0 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.1) pid=285808 stat=onproc flags process=10 proc=4000000 pri=32, usrpri=84, nice=20 forw=0xffffffffffffffff, list=0xffff8000fffef268,0xffff8000fffefa58 process=0xffff800027b0c020 user=0xffff8000211f1000, vmspace=0xfffffd8069f05a20 estcpu=34, cpticks=2, pctcpu=0.0 user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 88854 71804 56322 32767 2 0x10 syz-executor.5 88854 95736 56322 32767 2 0x4000010 syz-executor.5 54224 217383 13600 32767 2 0x10 syz-executor.6 54224 23256 13600 32767 2 0x4000010 syz-executor.6 21700 425437 19265 32767 2 0x10 syz-executor.2 21700 443678 19265 32767 2 0x4000010 syz-executor.2 7088 135525 85079 32767 2 0x10 syz-executor.3 7088 164419 85079 32767 2 0x4000010 syz-executor.3 52965 426477 906 32767 2 0x10 syz-executor.1 52965 157195 906 32767 7 0x4000010 syz-executor.1 *52965 285808 906 32767 7 0x4000010 syz-executor.1 52965 506482 906 32767 2 0x4000010 syz-executor.1 57917 419103 56055 32767 2 0x10 syz-executor.7 57917 90916 56055 32767 2 0x4000010 syz-executor.7 63724 109898 61582 32767 2 0x10 syz-executor.4 63724 143737 61582 32767 2 0x4000010 syz-executor.4 90875 244557 31222 32767 2 0x10 syz-executor.0 90875 174170 31222 32767 2 0x4000010 syz-executor.0 19265 173315 99460 32767 3 0x90 nanoslp syz-executor.2 99460 233679 22743 0 3 0x82 wait syz-executor.2 13600 479261 99477 32767 3 0x90 nanoslp syz-executor.6 99477 393746 22743 0 3 0x82 wait syz-executor.6 906 291346 26266 32767 3 0x90 nanoslp syz-executor.1 26266 460759 22743 0 3 0x82 wait syz-executor.1 85079 343909 32420 32767 3 0x90 nanoslp syz-executor.3 32420 423208 22743 0 3 0x82 wait syz-executor.3 61582 349425 16486 32767 3 0x90 nanoslp syz-executor.4 16486 339302 22743 0 3 0x82 wait syz-executor.4 31222 345305 77139 32767 3 0x90 nanoslp syz-executor.0 77139 455077 22743 0 3 0x82 wait syz-executor.0 17096 190422 0 0 3 0x14200 bored sosplice 56322 384406 52720 32767 3 0x90 nanoslp syz-executor.5 56055 107856 61046 32767 3 0x90 nanoslp syz-executor.7 61046 119427 22743 0 3 0x82 wait syz-executor.7 52720 147571 22743 0 3 0x82 wait syz-executor.5 22743 183742 75629 0 3 0x82 kqread syz-fuzzer 22743 263888 75629 0 3 0x4000082 thrsleep syz-fuzzer 22743 523128 75629 0 3 0x4000082 thrsleep syz-fuzzer 22743 322264 75629 0 3 0x4000082 thrsleep syz-fuzzer 22743 106289 75629 0 3 0x4000082 thrsleep syz-fuzzer 22743 276966 75629 0 3 0x4000082 thrsleep syz-fuzzer 22743 514200 75629 0 3 0x4000082 thrsleep syz-fuzzer 22743 299052 75629 0 3 0x4000082 thrsleep syz-fuzzer 22743 112316 75629 0 3 0x4000082 thrsleep syz-fuzzer 75629 289244 50674 0 3 0x10008a sigsusp ksh 50674 454393 88941 0 3 0x9a kqread sshd 27602 291441 1 0 3 0x100083 ttyin getty 88941 165780 1 0 3 0x88 kqread sshd 36822 31285 6454 73 3 0x1100090 kqread syslogd 6454 60399 1 0 3 0x100082 netio syslogd 25025 28149 1 0 3 0x100080 kqread resolvd 88331 372858 8583 77 3 0x100092 kqread dhcpleased 9343 162751 8583 77 3 0x100092 kqread dhcpleased 8583 231954 1 0 3 0x80 kqread dhcpleased 86019 63715 0 0 3 0x14200 bored smr 13373 263344 0 0 2 0x14200 zerothread 62427 192398 0 0 3 0x14200 aiodoned aiodoned 56182 267892 0 0 3 0x14200 syncer update 28915 96952 0 0 3 0x14200 cleaner cleaner 54828 463202 0 0 3 0x14200 reaper reaper 31022 50746 0 0 3 0x14200 pgdaemon pagedaemon 80826 353503 0 0 3 0x14200 bored viomb 58400 338354 0 0 3 0x40014200 acpi0 acpi0 34499 515770 0 0 3 0x40014200 idle1 4812 459631 0 0 3 0x14200 bored softnet 76335 161701 0 0 3 0x14200 bored systqmp 89057 472700 0 0 3 0x14200 bored systq 12674 513730 0 0 3 0x40014200 bored softclock 50583 240844 0 0 3 0x40014200 idle0 1 99629 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 52965 (syz-executor.1) thread 0xffff8000fffef268 (157195) exclusive rwlock futex r = 0 (0xffffffff8299aec0) #0 witness_lock+0x44d #1 sys_futex+0x5c sys/kern/sys_futex.c:108 #2 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #2 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #3 Xsyscall+0x128 Process 52965 (syz-executor.1) thread 0xffff8000fffee548 (285808) exclusive rwlock amaplk r = 0 (0xfffffd8066cb4ef0) #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 (0xfffffd8069f05a38) #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 (0xffffffff82b73a20) #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 (0xffffffff828f0910) #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 10198 6410K 6419K 78643K 11322 0 pcb 13 12K 14K 78643K 17 0 rtable 272 7K 8K 78643K 1598 0 ifaddr 81 17K 17K 78643K 160 0 sysctl 3 1K 1K 78643K 3 0 counters 56 35K 35K 78643K 78 0 ioctlops 0 0K 2K 78643K 93 0 iov 0 0K 28K 78643K 1405 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1271 79K 79K 78643K 2679 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 13K 78643K 118 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 3641 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 26 97K 125K 78643K 11385 0 sigio 0 0K 0K 78643K 47 0 proc 56 74K 123K 78643K 1367 0 subproc 104 6K 6K 78643K 247 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 981 0 in_multi 99 6K 7K 78643K 362 0 ether_multi 1 0K 0K 78643K 37 0 mrt 2 0K 0K 78643K 2 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 205 917K 917K 78643K 205 0 exec 0 0K 2K 78643K 1925 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 458 97K 112K 78643K 148341 0 UVM aobj 131 8K 8K 78643K 134 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 250 0 NDP 11 0K 2K 78643K 60 0 temp 125 4703K 4767K 78643K 30489 0 kqueue 12 18K 34K 78643K 3107 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 1048 0 1045 13 12 1 5 0 8 0 rtentry 112 260 0 133 4 0 4 4 0 8 0 unpcb 136 7280 0 7267 64 61 3 6 0 8 2 syncache 296 116 0 116 22 22 0 1 0 8 0 tcpqe 32 125 0 125 14 14 0 1 0 8 0 tcpcb 736 4815 0 4806 148 138 10 19 0 8 8 arp 120 42 0 23 1 0 1 1 0 8 0 ipq 40 9 0 8 5 4 1 1 0 8 0 ipqe 40 71 0 70 5 4 1 1 0 8 0 inpcb 304 26374 0 26356 212 203 9 21 0 8 7 rttmr 72 11 0 8 1 0 1 1 0 8 0 ip6q 72 32 0 31 5 4 1 1 0 8 0 ip6af 40 65 0 64 5 4 1 1 0 8 0 nd6 48 80 0 43 1 0 1 1 0 8 0 kcovpl 48 19 0 11 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1257 0 577 47 4 43 43 0 8 0 art_table 32 1258 0 577 6 0 6 6 0 8 0 art_node 16 259 0 142 1 0 1 1 0 8 0 semapl 112 3639 0 3629 1 0 1 1 0 8 0 shmpl 112 131 0 3 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 15478 0 14026 92 0 92 92 0 8 0 ffsino 272 15478 0 14026 98 0 98 98 0 8 0 nchpl 144 31583 0 29958 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 96534 0 96534 5 4 1 2 0 8 1 percpumem 16 51 0 11 1 0 1 1 0 8 0 scxspl 216 113161 0 113161 43 42 1 8 0 8 1 plimitpl 152 2506 0 2484 6 5 1 2 0 8 0 sigapl 424 11637 0 11585 7 1 6 7 0 8 0 futexpl 64 109360 0 109359 8 7 1 1 0 8 0 knotepl 120 750 0 0 12 1 11 11 0 8 0 kqueuepl 216 12826 0 12818 86 81 5 9 0 8 4 pipepl 336 2495 0 2467 73 67 6 14 0 8 3 fdescpl 496 11622 0 11585 7 2 5 6 0 8 0 filepl 152 91364 0 91131 143 128 15 23 0 8 5 lockfpl 104 1717 0 1715 4 3 1 2 0 8 0 lockfspl 48 435 0 433 1 0 1 1 0 8 0 sessionpl 144 34 0 18 1 0 1 1 0 8 0 pgrppl 48 61 0 45 1 0 1 1 0 8 0 ucredpl 96 9391 0 9373 1 0 1 1 0 8 0 zombiepl 144 11585 0 11585 1 0 1 1 0 8 1 processpl 1064 11637 0 11585 5 1 4 4 0 8 0 procpl 672 34033 0 33963 28 21 7 8 0 8 1 sosppl 168 850 0 848 18 17 1 1 0 8 0 sockpl 480 35078 0 35050 629 616 13 36 0 8 8 mcl64k 65536 42 0 0 3 0 3 3 0 8 0 mcl16k 16384 33 0 0 5 2 3 3 0 8 0 mcl12k 12288 25 0 0 2 0 2 2 0 8 0 mcl9k 9216 28 0 0 2 0 2 2 0 8 0 mcl8k 8192 25 0 0 4 1 3 3 0 8 0 mcl4k 4096 33 0 0 4 1 3 3 0 8 0 mcl2k2 2112 11 0 0 1 0 1 1 0 8 0 mcl2k 2048 259 0 0 19 2 17 19 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 13787 0 0 859 0 859 859 0 8 0 bufpl 288 22392 0 16058 453 0 453 453 0 8 0 anonpl 24 3434805 0 3419568 309 196 113 126 0 186 3 amapchunkpl 152 370324 0 369396 155 118 37 49 0 158 1 amappl16 200 37655 0 37244 245 215 30 35 0 8 8 amappl15 192 412 0 404 1 0 1 1 0 8 0 amappl14 184 43 0 42 1 0 1 1 0 8 0 amappl13 176 530 0 529 1 0 1 1 0 8 0 amappl12 168 29 0 26 2 1 1 1 0 8 0 amappl11 160 1178 0 1167 1 0 1 1 0 8 0 amappl10 152 2909 0 2899 1 0 1 1 0 8 0 amappl9 144 4961 0 4952 1 0 1 1 0 8 0 amappl8 136 3171 0 3038 5 0 5 5 0 8 0 amappl7 128 2144 0 2128 1 0 1 1 0 8 0 amappl6 120 4712 0 4680 2 1 1 2 0 8 0 amappl5 112 13224 0 13191 1 0 1 1 0 8 0 amappl4 104 3570 0 3539 2 0 2 2 0 8 0 amappl3 96 1316 0 1305 1 0 1 1 0 8 0 amappl2 88 2300 0 2254 3 1 2 3 0 8 0 amappl1 80 209656 0 209007 30 16 14 18 0 8 0 amappl 88 147179 0 146869 16 8 8 9 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 72 133 0 3 3 0 3 3 0 8 0 uaddrrnd 24 11622 0 11585 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 11622 0 11585 1 0 1 1 0 8 0 vmmpekpl 168 95396 0 95335 4 0 4 4 0 8 0 vmmpepl 168 1066475 0 1063567 285 153 132 146 0 357 5 vmsppl 368 11621 0 11585 4 0 4 4 0 8 0 rwobjpl 56 267485 0 259972 131 21 110 110 0 8 0 pdppl 4096 23251 0 23170 301 220 81 95 0 8 0 pvpl 32 5780267 0 5759396 565 366 199 260 0 265 9 pmappl 248 11621 0 11585 4 1 3 3 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 2122 0 441 49 0 49 49 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff82900ff0) 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(ffffffff82b73818) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82b73818) at __mp_lock+0x122 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x1f __mp_lock(ffffffff82b73818) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82b73818) at __mp_lock+0x129 sys/kern/kern_lock.c:147 sleep_setup(ffff8000211f0350,ffff8000fffef268,120,ffffffff8257105b,0) at sleep_setup+0xd3 sys/kern/kern_synch.c:374 rwsleep(ffff8000fffef268,ffffffff8299aeb0,120,ffffffff8257105b,0) at rwsleep+0xc0 sys/kern/kern_synch.c:315 futex_wait(648eb5b89c0,1,0,2) at futex_wait+0x13c sys/kern/sys_futex.c:260 sys_futex(ffff8000fffef268,ffff8000211f04e0,ffff8000211f0540) at sys_futex+0xf8 sys/kern/sys_futex.c:111 syscall(ffff8000211f05b0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000211f05b0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x64939b42d90, count: 2 ddb{0}> trace x86_ipi_db(ffffffff82900ff0) 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(ffffffff82b73818) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82b73818) at __mp_lock+0x122 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x1f __mp_lock(ffffffff82b73818) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82b73818) at __mp_lock+0x129 sys/kern/kern_lock.c:147 sleep_setup(ffff8000211f0350,ffff8000fffef268,120,ffffffff8257105b,0) at sleep_setup+0xd3 sys/kern/kern_synch.c:374 rwsleep(ffff8000fffef268,ffffffff8299aeb0,120,ffffffff8257105b,0) at rwsleep+0xc0 sys/kern/kern_synch.c:315 futex_wait(648eb5b89c0,1,0,2) at futex_wait+0x13c sys/kern/sys_futex.c:260 sys_futex(ffff8000fffef268,ffff8000211f04e0,ffff8000211f0540) at sys_futex+0xf8 sys/kern/sys_futex.c:111 syscall(ffff8000211f05b0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000211f05b0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x64939b42d90, count: -13 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(ffffffff8257189e) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff825ea8fa,ffffffff825488d3,66b,ffffffff825585ce) at __assert+0x25 sys/kern/subr_prf.c:161 uvm_fault_unwire_locked(fffffd8069f05a20,20000000,20011000) at uvm_fault_unwire_locked+0x2eb sys/uvm/uvm_fault.c:1640 uvm_fault_unwire(fffffd8069f05a20,20000000,20011000) at uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1601 sys_sysctl(ffff8000fffee548,ffff8000211f62b8,ffff8000211f6310) at sys_sysctl+0x229 sys/kern/kern_sysctl.c:254 syscall(ffff8000211f6380) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000211f6380) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x648ae759be0, count: 7 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff8257189e) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff825ea8fa,ffffffff825488d3,66b,ffffffff825585ce) at __assert+0x25 sys/kern/subr_prf.c:161 uvm_fault_unwire_locked(fffffd8069f05a20,20000000,20011000) at uvm_fault_unwire_locked+0x2eb sys/uvm/uvm_fault.c:1640 uvm_fault_unwire(fffffd8069f05a20,20000000,20011000) at uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1601 sys_sysctl(ffff8000fffee548,ffff8000211f62b8,ffff8000211f6310) at sys_sysctl+0x229 sys/kern/kern_sysctl.c:254 syscall(ffff8000211f6380) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000211f6380) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x648ae759be0, count: -8