panic: kernel diagnostic assertion "va >= entry->start" failed: file "/syzkaller/managers/setuid/kernel/sys/uvm/uvm_fault.c", line 1694 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *186659 26636 32767 0x10 0x4000000 1K syz-executor 256987 26636 32767 0x10 0x4000000 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830ef890) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff830a7fa2,ffffffff830e0f9b,69e,ffffffff8300da46) at __assert+0x29 uvm_fault_unwire_locked(fffffd806c264a98,20000000,20010000) at uvm_fault_unwire_locked+0x4b4 uvm_fault_unwire(fffffd806c264a98,20000000,20010000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1657 kern_sysctl(ffff8000371e5944,3,20000100,ffff8000371e5978,0,2e,a083b6ba808fa731) at kern_sysctl+0x500 sysctl_vsunlock sys/kern/kern_sysctl.c:209 [inline] kern_sysctl(ffff8000371e5944,3,20000100,ffff8000371e5978,0,2e,a083b6ba808fa731) at kern_sysctl+0x500 sys/kern/kern_sysctl.c:508 sys_sysctl(ffff8000371fc030,ffff8000371e5ab0,ffff8000371e5a00) at sys_sysctl+0x425 syscall(ffff8000371e5ab0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff8000371e5ab0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x820e123b10, count: 6 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 "va >= entry->start" failed: file "/syzkaller/managers/setuid/kernel/sys/uvm/uvm_fault.c", line 1694 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830ef890) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff830a7fa2,ffffffff830e0f9b,69e,ffffffff8300da46) at __assert+0x29 uvm_fault_unwire_locked(fffffd806c264a98,20000000,20010000) at uvm_fault_unwire_locked+0x4b4 uvm_fault_unwire(fffffd806c264a98,20000000,20010000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1657 kern_sysctl(ffff8000371e5944,3,20000100,ffff8000371e5978,0,2e,a083b6ba808fa731) at kern_sysctl+0x500 sysctl_vsunlock sys/kern/kern_sysctl.c:209 [inline] kern_sysctl(ffff8000371e5944,3,20000100,ffff8000371e5978,0,2e,a083b6ba808fa731) at kern_sysctl+0x500 sys/kern/kern_sysctl.c:508 sys_sysctl(ffff8000371fc030,ffff8000371e5ab0,ffff8000371e5a00) at sys_sysctl+0x425 syscall(ffff8000371e5ab0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff8000371e5ab0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x820e123b10, count: -9 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff8000371e55d0 rbx 0xffff800029b7cdbf rdx 0 rcx 0xffff8000371fc030 rax 0xffff800029b7bff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x2f7f3f59aec5f6f7 r11 0x9d096290324be6e2 r12 0xffff800029b7cbc0 r13 0 r14 0 r15 0x1 rip 0xffffffff824466b5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff8000371e55c0 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=186659 pid=26636 tcnt=3 stat=onproc flags process=10 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000371fcf60,0xffff8000371fdc18 process=0xffff8000371d1fd8 user=0xffff8000371e0000, vmspace=0xfffffd806c264a98 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 56095 188139 54732 32767 2 0x10 syz-executor 56095 13008 54732 32767 3 0x4000090 fsleep syz-executor 26636 373655 13176 32767 2 0x10 syz-executor *26636 186659 13176 32767 7 0x4000010 syz-executor 26636 256987 13176 32767 7 0x4000010 syz-executor 82449 472106 66140 32767 2 0x10 syz-executor 82449 152623 66140 32767 3 0x4000090 fsleep syz-executor 28356 467429 26475 32767 2 0x10 syz-executor 28356 262969 26475 32767 3 0x4000090 fsleep syz-executor 36003 193280 78166 32767 2 0x10 syz-executor 36003 427199 78166 32767 3 0x4000090 ttyretype syz-executor 36003 365377 78166 32767 3 0x4000090 ttyout syz-executor 36003 260974 78166 32767 3 0x4000090 fsleep syz-executor 5812 387264 54920 32767 3 0x90 nanoslp syz-executor 5812 524090 54920 32767 3 0x4000090 kqsel syz-executor 5812 383729 54920 32767 3 0x4000090 fsleep syz-executor 79054 359829 0 0 3 0x14200 bored sosplice 26475 454756 15271 32767 3 0x90 nanoslp syz-executor 13176 465097 4369 32767 3 0x90 nanoslp syz-executor 54732 315495 21 32767 3 0x90 nanoslp syz-executor 78166 247812 67724 32767 3 0x90 nanoslp syz-executor 26990 51043 20455 32767 3 0x90 wait syz-executor 66140 231249 60091 32767 3 0x90 nanoslp syz-executor 62990 44779 35066 32767 3 0x90 wait syz-executor 54920 249298 96036 32767 3 0x90 nanoslp syz-executor 4369 228365 2994 0 3 0x82 wait syz-executor 15271 368161 2994 0 3 0x82 wait syz-executor 21 186560 2994 0 3 0x82 wait syz-executor 67724 256862 2994 0 3 0x82 wait syz-executor 20455 51052 2994 0 3 0x82 wait syz-executor 96036 209034 2994 0 3 0x82 wait syz-executor 35066 53116 2994 0 3 0x82 wait syz-executor 60091 42251 2994 0 3 0x82 wait syz-executor 2994 252050 34868 0 3 0x82 kqread syz-executor 34868 498373 11331 0 3 0x10008a sigsusp ksh 11331 502525 22785 0 3 0x98 kqread sshd-session 22785 204349 41835 0 3 0x92 kqread sshd-session 94279 133939 1 0 3 0x100083 ttyin getty 41835 101867 1 0 3 0x88 kqread sshd 74393 336377 16095 73 3 0x1100090 kqread syslogd 16095 321307 1 0 3 0x100082 sbwait syslogd 48920 164911 1 0 3 0x100080 kqread resolvd 96163 8337 25453 77 3 0x100092 kqread dhcpleased 15766 483242 25453 77 3 0x100092 kqread dhcpleased 25453 500126 1 0 3 0x80 kqread dhcpleased 55490 414956 0 0 3 0x14200 bored smr 76530 314759 0 0 2 0x14200 zerothread 24340 209751 0 0 3 0x14200 aiodoned aiodoned 26947 153546 0 0 3 0x14200 syncer update 50808 202363 0 0 3 0x14200 cleaner cleaner 12605 524280 0 0 3 0x14200 reaper reaper 36105 169769 0 0 3 0x14200 pgdaemon pagedaemon 29711 220185 0 0 3 0x14200 bored viomb 1281 440434 0 0 3 0x40014200 acpi0 acpi0 10758 208380 0 0 3 0x40014200 idle1 29850 312729 0 0 3 0x14200 bored softnet3 90580 261953 0 0 3 0x14200 bored softnet2 28816 213362 0 0 3 0x14200 bored softnet1 47918 328162 0 0 3 0x14200 bored softnet0 59700 36742 0 0 3 0x14200 bored systqmp 33937 81616 0 0 3 0x14200 bored systq 16973 126990 0 0 3 0x14200 tmoslp softclockmp 58001 4073 0 0 3 0x40014200 tmoslp softclock 32360 82153 0 0 3 0x40014200 idle0 1 243121 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 26636 (syz-executor) thread 0xffff8000371fc030 (186659) exclusive rwlock amaplk r = 0 (0xfffffd806c18a940) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 uvm_map_lock_entry+0x4c sys/uvm/uvm_map.c:464 #2 uvm_fault_unwire_locked+0x253 sys/uvm/uvm_fault.c:1713 #3 uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1657 #4 kern_sysctl+0x500 sysctl_vsunlock sys/kern/kern_sysctl.c:209 [inline] #4 kern_sysctl+0x500 sys/kern/kern_sysctl.c:508 #5 sys_sysctl+0x425 #6 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #6 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 shared rwlock vmmaplk r = 0 (0xfffffd806c264b90) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 uvm_fault_unwire+0x3e sys/uvm/uvm_fault.c:1656 #2 kern_sysctl+0x500 sysctl_vsunlock sys/kern/kern_sysctl.c:209 [inline] #2 kern_sysctl+0x500 sys/kern/kern_sysctl.c:508 #3 sys_sysctl+0x425 #4 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #4 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #5 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff835846e0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 __mp_acquire_count+0x58 #2 mi_switch+0x4b7 sys/kern/sched_bsd.c:441 #3 sleep_finish+0x2f2 sys/kern/kern_synch.c:425 #4 rw_enter+0x348 sys/kern/kern_rwlock.c:285 #5 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5255 #6 uvm_map_extract+0x176 sys/uvm/uvm_map.c:4310 #7 uvm_io+0x166 sys/uvm/uvm_io.c:98 #8 sysctl_proc_args+0x5f4 sys/kern/kern_sysctl.c:2207 #9 kern_sysctl+0x492 sys/kern/kern_sysctl.c:506 #10 sys_sysctl+0x425 #11 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #11 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #12 Xsyscall+0x128 exclusive rwlock sysctllk r = 0 (0xffffffff8341b140) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 sysctl_vslock+0x45 sys/kern/kern_sysctl.c:181 #3 kern_sysctl+0x1ad sys/kern/kern_sysctl.c:504 #4 sys_sysctl+0x425 #5 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #5 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #6 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10188 11048K 11059K 166960K 11266 0 pcb 17 12K 12K 166960K 17 0 rtable 240 6K 7K 166960K 357 0 pf 31 16K 16K 166960K 31 0 ifaddr 42 7K 7K 166960K 44 0 ifgroup 50 2K 2K 166960K 50 0 sysctl 1 1K 1K 166960K 1 0 counters 64 36K 36K 166960K 64 0 ioctlops 0 0K 2K 166960K 35 0 iov 0 0K 17K 166960K 46 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1364 86K 86K 166960K 1399 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 13K 166960K 8 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 49 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 26 97K 117K 166960K 352 0 sigio 0 0K 0K 166960K 5 0 proc 63 91K 103K 166960K 516 0 subproc 104 6K 6K 166960K 104 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 113 0 in_multi 99 7K 7K 166960K 107 0 ether_multi 1 0K 0K 166960K 3 0 mrt 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 97 440K 440K 166960K 97 0 exec 0 0K 1K 166960K 352 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 272 74K 88K 166960K 4708 0 UVM aobj 11 2K 2K 166960K 13 0 pinsyscall 47 94K 110K 166960K 1343 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 25 0 NDP 11 0K 2K 166960K 27 0 temp 48 6821K 6885K 166960K 5279 0 kqueue 13 20K 30K 166960K 65 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 43 0 40 1 0 1 1 0 8 0 rtentry 112 115 0 2 4 0 4 4 0 8 0 unpcb 144 203 0 184 1 0 1 1 0 8 0 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 808 314 0 309 8 0 8 8 0 8 7 arp 120 18 0 0 1 0 1 1 0 8 0 ipq 40 3 0 1 1 0 1 1 0 8 0 ipqe 40 46 0 44 1 0 1 1 0 8 0 inpcb 336 656 0 646 7 0 7 7 0 8 6 nd6 136 28 0 1 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 484 0 2 31 0 31 31 0 8 0 art_table 32 485 0 2 4 0 4 4 0 8 0 art_node 16 114 0 11 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 0 1 0 1 1 0 8 0 semupl 112 2 0 2 1 0 1 1 0 8 1 semapl 112 47 0 37 1 0 1 1 0 8 0 shmpl 112 10 0 2 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 1862 0 360 95 0 95 95 0 8 0 ffsino 272 1862 0 360 101 0 101 101 0 8 0 nchpl 144 2340 0 662 63 0 63 63 0 8 0 uvmvnodes 80 1975 0 0 41 0 41 41 0 8 0 vnodes 216 1975 0 0 110 0 110 110 0 8 0 namei 1024 7186 0 7186 1 0 1 1 0 8 1 percpumem 16 46 0 0 1 0 1 1 0 8 0 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 7272 0 7272 9 1 8 8 1 8 8 plimitpl 152 131 0 105 2 0 2 2 0 8 0 sigapl 424 625 0 568 7 0 7 7 0 8 0 futexpl 64 3041 0 3036 1 0 1 1 0 8 0 knotepl 120 84 0 0 3 0 3 3 0 8 0 kqueuepl 216 91 0 80 1 0 1 1 0 8 0 pipepl 320 117 0 90 3 0 3 3 0 8 0 fdescpl 496 606 0 568 7 1 6 6 0 8 0 filepl 152 2949 0 2690 13 0 13 13 0 8 1 lockfpl 104 47 0 44 1 0 1 1 0 8 0 lockfspl 48 21 0 18 1 0 1 1 0 8 0 sessionpl 144 22 0 6 1 0 1 1 0 8 0 pgrppl 48 38 0 14 1 0 1 1 0 8 0 ucredpl 104 360 0 341 1 0 1 1 0 8 0 zombiepl 144 570 0 568 1 0 1 1 0 8 0 processpl 1160 625 0 568 5 0 5 5 0 8 0 procpl 648 1008 0 941 7 0 7 7 0 8 0 sosppl 168 4 0 4 1 0 1 1 0 8 1 sockpl 664 903 0 871 9 0 9 9 0 8 6 mcl64k 65536 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 126 0 0 16 0 16 16 0 8 0 mcl2k 2048 14 0 0 2 0 2 2 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 328 0 0 21 0 21 21 0 8 0 bufpl 280 2674 0 95 185 0 185 185 0 8 0 anonpl 24 181859 0 178038 49 1 48 49 0 185 17 amapchunkpl 152 15967 0 15334 33 0 33 33 0 158 6 amappl16 200 5157 0 5136 14 3 11 14 0 8 8 amappl15 192 4 0 4 1 1 0 1 0 8 0 amappl14 184 105 0 95 1 0 1 1 0 8 0 amappl13 176 9 0 9 1 1 0 1 0 8 0 amappl12 168 1209 0 1171 2 0 2 2 0 8 0 amappl11 160 72 0 62 1 0 1 1 0 8 0 amappl10 152 14 0 14 1 1 0 1 0 8 0 amappl9 144 134 0 134 1 1 0 1 0 8 0 amappl8 136 23 0 21 1 0 1 1 0 8 0 amappl7 128 96 0 85 1 0 1 1 0 8 0 amappl6 120 162 0 161 1 0 1 1 0 8 0 amappl5 112 126 0 118 1 0 1 1 0 8 0 amappl4 104 282 0 267 1 0 1 1 0 8 0 amappl3 96 2850 0 2737 4 0 4 4 0 8 0 amappl2 88 876 0 790 3 0 3 3 0 8 0 amappl1 80 7968 0 7435 13 0 13 13 0 8 0 amappl 88 4353 0 4137 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 12 0 2 1 0 1 1 0 8 0 uaddrrnd 24 606 0 568 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 606 0 568 1 0 1 1 0 8 0 vmmpekpl 168 6174 0 6140 2 0 2 2 0 8 0 vmmpepl 168 46173 0 44115 106 0 106 106 0 357 14 vmsppl 448 605 0 568 5 0 5 5 0 8 0 rwobjpl 56 19646 0 16797 42 0 42 42 0 8 1 pdppl 4096 1219 0 1136 113 30 83 93 0 8 0 pvpl 32 14534 0 0 118 0 118 118 0 265 0 pmappl 248 605 0 568 4 1 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 410 0 32 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8343cff0) 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 __mp_lock(ffffffff835844d8) at __mp_lock+0x19e __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835844d8) at __mp_lock+0x19e sys/kern/kern_lock.c:144 softintr_dispatch(0) at softintr_dispatch+0x5b sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff835844d8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835844d8) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff800030983220) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff800030983220) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x81725d4f40, count: 6 ddb{0}> trace x86_ipi_db(ffffffff8343cff0) 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 __mp_lock(ffffffff835844d8) at __mp_lock+0x19e __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835844d8) at __mp_lock+0x19e sys/kern/kern_lock.c:144 softintr_dispatch(0) at softintr_dispatch+0x5b sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff835844d8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835844d8) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff800030983220) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff800030983220) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x81725d4f40, count: -9 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x25: addq $0x8,%rsp db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830ef890) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff830a7fa2,ffffffff830e0f9b,69e,ffffffff8300da46) at __assert+0x29 uvm_fault_unwire_locked(fffffd806c264a98,20000000,20010000) at uvm_fault_unwire_locked+0x4b4 uvm_fault_unwire(fffffd806c264a98,20000000,20010000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1657 kern_sysctl(ffff8000371e5944,3,20000100,ffff8000371e5978,0,2e,a083b6ba808fa731) at kern_sysctl+0x500 sysctl_vsunlock sys/kern/kern_sysctl.c:209 [inline] kern_sysctl(ffff8000371e5944,3,20000100,ffff8000371e5978,0,2e,a083b6ba808fa731) at kern_sysctl+0x500 sys/kern/kern_sysctl.c:508 sys_sysctl(ffff8000371fc030,ffff8000371e5ab0,ffff8000371e5a00) at sys_sysctl+0x425 syscall(ffff8000371e5ab0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff8000371e5ab0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x820e123b10, count: 6 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830ef890) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff830a7fa2,ffffffff830e0f9b,69e,ffffffff8300da46) at __assert+0x29 uvm_fault_unwire_locked(fffffd806c264a98,20000000,20010000) at uvm_fault_unwire_locked+0x4b4 uvm_fault_unwire(fffffd806c264a98,20000000,20010000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1657 kern_sysctl(ffff8000371e5944,3,20000100,ffff8000371e5978,0,2e,a083b6ba808fa731) at kern_sysctl+0x500 sysctl_vsunlock sys/kern/kern_sysctl.c:209 [inline] kern_sysctl(ffff8000371e5944,3,20000100,ffff8000371e5978,0,2e,a083b6ba808fa731) at kern_sysctl+0x500 sys/kern/kern_sysctl.c:508 sys_sysctl(ffff8000371fc030,ffff8000371e5ab0,ffff8000371e5a00) at sys_sysctl+0x425 syscall(ffff8000371e5ab0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff8000371e5ab0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x820e123b10, count: -9