panic: kernel diagnostic assertion "va >= entry->start" failed: file "/syzkaller/managers/setuid/kernel/sys/uvm/uvm_fault.c", line 1739 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *247377 51531 32767 0x10 0x4000000 1 syz-executor 253161 3134 0 0x14000 0x200 0 zerothread db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8343f325) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833e6f56,ffffffff83422e1b,6cb,ffffffff83334d03) at __assert+0x29 uvm_fault_unwire_locked(fffffd806a4ba3c0,400000000000,400000011000) at uvm_fault_unwire_locked+0x4c1 uvm_fault_unwire(fffffd806a4ba3c0,400000000000,400000011000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1702 kern_sysctl_dirs(4e,ffff800032cac7c8,1,4000000001c0,ffff800032cac7f8,0,a0412df3a95fbafe,1) at kern_sysctl_dirs+0x363 sysctl_vsunlock sys/kern/kern_sysctl.c:215 [inline] kern_sysctl_dirs(4e,ffff800032cac7c8,1,4000000001c0,ffff800032cac7f8,0,a0412df3a95fbafe,1) at kern_sysctl_dirs+0x363 sys/kern/kern_sysctl.c:432 kern_sysctl(ffff800032cac7c4,2,4000000001c0,ffff800032cac7f8,0,37,57145ef699ddebd6) at kern_sysctl+0x12d sys/kern/kern_sysctl.c:526 sys_sysctl(ffff8000fffee2b8,ffff800032cac930,ffff800032cac880) at sys_sysctl+0x425 syscall(ffff800032cac930) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800032cac930) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x30a674efc00, count: 5 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 1739 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8343f325) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833e6f56,ffffffff83422e1b,6cb,ffffffff83334d03) at __assert+0x29 uvm_fault_unwire_locked(fffffd806a4ba3c0,400000000000,400000011000) at uvm_fault_unwire_locked+0x4c1 uvm_fault_unwire(fffffd806a4ba3c0,400000000000,400000011000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1702 kern_sysctl_dirs(4e,ffff800032cac7c8,1,4000000001c0,ffff800032cac7f8,0,a0412df3a95fbafe,1) at kern_sysctl_dirs+0x363 sysctl_vsunlock sys/kern/kern_sysctl.c:215 [inline] kern_sysctl_dirs(4e,ffff800032cac7c8,1,4000000001c0,ffff800032cac7f8,0,a0412df3a95fbafe,1) at kern_sysctl_dirs+0x363 sys/kern/kern_sysctl.c:432 kern_sysctl(ffff800032cac7c4,2,4000000001c0,ffff800032cac7f8,0,37,57145ef699ddebd6) at kern_sysctl+0x12d sys/kern/kern_sysctl.c:526 sys_sysctl(ffff8000fffee2b8,ffff800032cac930,ffff800032cac880) at sys_sysctl+0x425 syscall(ffff800032cac930) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800032cac930) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x30a674efc00, count: -10 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800032cac3a0 rbx 0xffff800029a9cdc7 rdx 0 rcx 0xffff8000fffee2b8 rax 0xffff800029a9bff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x8445730ac6a45ed9 r11 0xaf0ebe9f0b0f26aa r12 0xffff800029a9cbc8 r13 0 r14 0 r15 0x1 rip 0xffffffff81af0975 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff800032cac390 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=247377 pid=51531 tcnt=4 stat=onproc flags process=10 proc=4000000 runpri=32, usrpri=71, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000fffeecf8,0xffff8000fffefc68 process=0xffff8000ffff4948 user=0xffff800032ca7000, vmspace=0xfffffd806a4ba3c0 estcpu=21, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 51531 502969 93691 32767 3 0x10 vmmaplk syz-executor 51531 240541 93691 32767 3 0x4000090 fsleep syz-executor *51531 247377 93691 32767 7 0x4000010 syz-executor 51531 251467 93691 32767 3 0x4000090 fsleep syz-executor 83048 91938 62004 32767 2 0x10 syz-executor 83048 221494 62004 32767 2 0x4000010 syz-executor 83048 76641 62004 32767 2 0x4000010 syz-executor 57159 478424 0 0 3 0x14200 bored sosplice 15677 264179 89380 0 3 0x100082 sbwait ndp 89380 265996 63038 0 3 0x10008a sigsusp sh 93691 428193 4085 32767 3 0x90 nanoslp syz-executor 87154 301707 26905 32767 3 0x90 piperd syz-executor 63038 367373 9069 0 3 0x80 wait syz-executor 49246 12887 37250 32767 3 0x90 piperd syz-executor 6520 481779 87983 32767 3 0x90 piperd syz-executor 62004 211440 86190 32767 3 0x90 nanoslp syz-executor 38167 250289 50600 32767 3 0x90 piperd syz-executor 26905 357893 53910 0 3 0x82 wait syz-executor 37250 483146 53910 0 3 0x82 wait syz-executor 9069 431978 53910 0 3 0x82 wait syz-executor 87983 386341 53910 0 3 0x82 wait syz-executor 4085 165258 53910 0 3 0x82 wait syz-executor 86190 439766 53910 0 3 0x82 wait syz-executor 50600 335516 53910 0 3 0x82 wait syz-executor 53910 242777 60847 0 3 0x82 nanoslp syz-executor 60847 162865 64562 0 3 0x10008a sigsusp ksh 64562 95506 92206 0 3 0x98 kqread sshd-session 92206 426330 55123 0 3 0x92 kqread sshd-session 64564 393758 1 0 3 0x100083 ttyin getty 55123 282505 1 0 3 0x88 kqread sshd 46687 262043 37367 73 3 0x1100090 kqread syslogd 37367 177790 1 0 3 0x100082 sbwait syslogd 76238 226802 1 0 3 0x100080 kqread resolvd 34353 141924 71782 77 3 0x100092 kqread dhcpleased 8887 300218 71782 77 3 0x100092 kqread dhcpleased 71782 184377 1 0 3 0x80 kqread dhcpleased 18488 222598 0 0 3 0x14200 bored smr 3134 253161 0 0 7 0x14200 zerothread 56328 94014 0 0 3 0x14200 aiodoned aiodoned 83402 416762 0 0 3 0x14200 syncer update 67957 415594 0 0 3 0x14200 cleaner cleaner 33451 432271 0 0 3 0x14200 reaper reaper 46873 349839 0 0 3 0x14200 pgdaemon pagedaemon 45763 4334 0 0 3 0x14200 bored viomb 89171 87559 0 0 3 0x40014200 acpi0 acpi0 29336 465446 0 0 3 0x40014200 idle1 67677 295841 0 0 3 0x14200 bored softnet3 65027 119406 0 0 3 0x14200 bored softnet2 12576 352908 0 0 3 0x14200 bored softnet1 99883 438928 0 0 3 0x14200 bored softnet0 34224 117906 0 0 3 0x14200 bored systqmp 45148 442173 0 0 3 0x14200 bored systq 36297 121886 0 0 3 0x14200 tmoslp softclockmp 35302 425860 0 0 3 0x40014200 tmoslp softclock 45630 246205 0 0 3 0x40014200 idle0 1 378910 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 51531 (syz-executor) thread 0xffff8000fffee2b8 (247377) exclusive rwlock amaplk r = 0 (0xfffffd80652c4e60) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 uvm_map_lock_entry+0x51 sys/uvm/uvm_map.c:464 #3 uvm_fault_unwire_locked+0x253 sys/uvm/uvm_fault.c:1758 #4 uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1702 #5 kern_sysctl_dirs+0x363 sysctl_vsunlock sys/kern/kern_sysctl.c:215 [inline] #5 kern_sysctl_dirs+0x363 sys/kern/kern_sysctl.c:432 #6 kern_sysctl+0x12d sys/kern/kern_sysctl.c:526 #7 sys_sysctl+0x425 #8 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 shared rwlock vmmaplk r = 0 (0xfffffd806a4ba4c0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_read+0x3af sys/kern/kern_rwlock.c:405 #2 uvm_fault_unwire+0x3e sys/uvm/uvm_fault.c:1701 #3 kern_sysctl_dirs+0x363 sysctl_vsunlock sys/kern/kern_sysctl.c:215 [inline] #3 kern_sysctl_dirs+0x363 sys/kern/kern_sysctl.c:432 #4 kern_sysctl+0x12d sys/kern/kern_sysctl.c:526 #5 sys_sysctl+0x425 #6 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8397dd28) #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+0x24f sys/kern/kern_synch.c:414 #4 rw_do_enter_write+0x1de sys/kern/kern_rwlock.c:292 #5 uvm_fault_check+0x54c sys/uvm/uvm_fault.c:846 #6 uvm_fault+0x106 sys/uvm/uvm_fault.c:668 #7 uvm_fault_wire+0x73 sys/uvm/uvm_fault.c:1681 #8 sysctl_vslock+0x109 sys/kern/kern_sysctl.c:197 #9 kern_sysctl_dirs+0x266 sys/kern/kern_sysctl.c:428 #10 kern_sysctl+0x12d sys/kern/kern_sysctl.c:526 #11 sys_sysctl+0x425 #12 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #12 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #13 Xsyscall+0x128 exclusive rwlock sysctllk r = 0 (0xffffffff837e4fb8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 sysctl_vslock+0x45 sys/kern/kern_sysctl.c:187 #3 kern_sysctl_dirs+0x266 sys/kern/kern_sysctl.c:428 #4 kern_sysctl+0x12d sys/kern/kern_sysctl.c:526 #5 sys_sysctl+0x425 #6 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10186 10952K 10966K 166960K 11268 0 pcb 17 14K 16K 166960K 19 0 rtable 210 6K 7K 166960K 428 0 pf 29 16K 16K 166960K 31 0 ifaddr 38 6K 7K 166960K 44 0 ifgroup 46 2K 2K 166960K 50 0 sysctl 2 1K 1K 166960K 2 0 counters 62 36K 36K 166960K 64 0 ioctlops 0 0K 2K 166960K 34 0 iov 0 0K 12K 166960K 50 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1333 84K 84K 166960K 1523 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 10 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 17 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 20 73K 121K 166960K 489 0 sigio 0 0K 0K 166960K 5 0 proc 58 79K 115K 166960K 510 0 subproc 63 3K 4K 166960K 189 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 133 0 in_multi 88 6K 7K 166960K 118 0 ether_multi 1 0K 0K 166960K 9 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 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 372 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 200 68K 88K 166960K 5682 0 UVM aobj 81 3K 3K 166960K 82 0 pinsyscall 42 84K 113K 166960K 1521 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 29 0 NDP 10 0K 2K 166960K 27 0 temp 70 8643K 8707K 166960K 5375 0 kqueue 13 20K 30K 166960K 73 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 65 0 61 1 0 1 1 0 8 0 rtentry 112 113 0 15 4 0 4 4 0 8 0 unpcb 144 506 0 490 6 2 4 6 0 8 3 syncache 336 5 0 5 1 0 1 1 0 8 1 tcpcb 808 154 0 150 5 3 2 5 0 8 1 arp 120 18 0 2 1 0 1 1 0 8 0 ipq 40 3 0 2 1 0 1 1 0 8 0 ipqe 40 47 0 46 1 0 1 1 0 8 0 inpcb 376 785 0 776 24 15 9 18 0 8 8 nd6 136 26 0 6 1 0 1 1 0 8 0 kcovpl 48 21 0 14 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 461 0 53 29 1 28 29 0 8 0 art_table 32 462 0 53 4 0 4 4 0 8 0 art_node 16 112 0 23 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 7 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 14 0 4 1 0 1 1 0 8 0 shmpl 112 79 0 1 3 0 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2007 0 485 96 0 96 96 0 8 0 ffsino 280 2007 0 485 109 0 109 109 0 8 0 nchpl 144 2590 0 904 63 0 63 63 0 8 0 uvmvnodes 80 2205 0 0 45 0 45 45 0 8 0 vnodes 216 2205 0 0 123 0 123 123 0 8 0 namei 1024 8553 0 8553 1 0 1 1 0 8 1 percpumem 16 46 0 1 1 0 1 1 0 8 0 kstatmem 264 22 0 2 2 0 2 2 0 8 0 scxspl 216 8584 0 8584 10 2 8 8 1 8 8 plimitpl 152 94 0 72 2 0 2 2 0 8 1 sigapl 424 745 0 694 7 0 7 7 0 8 0 futexpl 64 4132 0 4130 1 0 1 1 0 8 0 knotepl 120 314 0 0 10 0 10 10 0 8 0 kqueuepl 216 102 0 93 1 0 1 1 0 8 0 pipepl 328 197 0 170 6 0 6 6 0 8 3 fdescpl 504 726 0 694 7 1 6 6 0 8 0 filepl 152 4241 0 4044 16 1 15 16 0 8 7 lockfpl 104 245 0 243 1 0 1 1 0 8 0 lockfspl 48 38 0 36 1 0 1 1 0 8 0 sessionpl 144 36 0 21 1 0 1 1 0 8 0 pgrppl 48 58 0 36 1 0 1 1 0 8 0 ucredpl 104 591 0 574 1 0 1 1 0 8 0 zombiepl 144 694 0 694 1 0 1 1 0 8 1 processpl 1176 745 0 694 5 0 5 5 0 8 0 procpl 656 1272 0 1216 7 0 7 7 0 8 1 sosppl 168 2 0 2 1 0 1 1 0 8 1 sockpl 688 1392 0 1363 29 18 11 19 0 8 8 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 116 0 0 15 0 15 15 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 36 0 0 5 0 5 5 0 8 0 mtagpl 96 5 0 0 1 0 1 1 0 8 0 mbufpl 256 332 0 0 21 0 21 21 0 8 0 bufpl 280 2912 0 134 199 0 199 199 0 8 0 anonpl 24 139220 0 136280 48 5 43 47 0 184 16 amapchunkpl 152 18610 0 18192 31 2 29 31 0 158 9 amappl16 200 2718 0 2704 17 8 9 14 0 8 8 amappl15 192 3 0 3 1 1 0 1 0 8 0 amappl14 184 111 0 100 1 0 1 1 0 8 0 amappl13 176 7 0 6 1 0 1 1 0 8 0 amappl12 168 1350 0 1317 3 1 2 2 0 8 0 amappl11 160 46 0 36 1 0 1 1 0 8 0 amappl10 152 6 0 6 2 2 0 1 0 8 0 amappl9 144 249 0 249 1 1 0 1 0 8 0 amappl8 136 21 0 20 1 0 1 1 0 8 0 amappl7 128 126 0 115 1 0 1 1 0 8 0 amappl6 120 179 0 175 1 0 1 1 0 8 0 amappl5 112 121 0 115 1 0 1 1 0 8 0 amappl4 104 289 0 274 1 0 1 1 0 8 0 amappl3 96 3359 0 3260 4 0 4 4 0 8 0 amappl2 88 635 0 579 2 0 2 2 0 8 0 amappl1 80 8997 0 8449 14 0 14 14 0 8 0 amappl 88 5286 0 5137 6 0 6 6 0 92 1 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 81 0 1 2 0 2 2 0 8 0 uaddrrnd 24 726 0 694 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 726 0 694 1 0 1 1 0 8 0 vmmpekpl 168 8083 0 8043 3 0 3 3 0 8 0 vmmpepl 168 50701 0 48971 99 4 95 99 0 357 9 vmsppl 456 725 0 694 7 1 6 6 0 8 0 rwobjpl 64 18993 0 15887 53 1 52 52 0 8 1 pdppl 4096 1460 0 1388 110 28 82 96 0 8 10 pvpl 32 15474 0 0 125 0 125 125 0 265 0 pmappl 248 725 0 694 4 1 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 299 0 35 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83851ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x35 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x35 sys/dev/kcov.c:230 witness_checkorder(ffffffff839eac50,9,0) at witness_checkorder+0x7b sys/kern/subr_witness.c:772 mtx_enter(ffffffff839eac40) at mtx_enter+0x47 sys/kern/kern_lock.c:238 msleep(ffffffff839eaabc,ffffffff839eac40,7f,ffffffff83362d95,0) at msleep+0x2cf sys/kern/kern_synch.c:239 uvm_pagezero_thread(ffff80002a2f8a48) at uvm_pagezero_thread+0xe9 sys/uvm/uvm_pmemrange.c:2210 end trace frame: 0x0, count: 7 ddb{0}> trace x86_ipi_db(ffffffff83851ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x35 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x35 sys/dev/kcov.c:230 witness_checkorder(ffffffff839eac50,9,0) at witness_checkorder+0x7b sys/kern/subr_witness.c:772 mtx_enter(ffffffff839eac40) at mtx_enter+0x47 sys/kern/kern_lock.c:238 msleep(ffffffff839eaabc,ffffffff839eac40,7f,ffffffff83362d95,0) at msleep+0x2cf sys/kern/kern_synch.c:239 uvm_pagezero_thread(ffff80002a2f8a48) at uvm_pagezero_thread+0xe9 sys/uvm/uvm_pmemrange.c:2210 end trace frame: 0x0, count: -8 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:438 panic(ffffffff8343f325) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833e6f56,ffffffff83422e1b,6cb,ffffffff83334d03) at __assert+0x29 uvm_fault_unwire_locked(fffffd806a4ba3c0,400000000000,400000011000) at uvm_fault_unwire_locked+0x4c1 uvm_fault_unwire(fffffd806a4ba3c0,400000000000,400000011000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1702 kern_sysctl_dirs(4e,ffff800032cac7c8,1,4000000001c0,ffff800032cac7f8,0,a0412df3a95fbafe,1) at kern_sysctl_dirs+0x363 sysctl_vsunlock sys/kern/kern_sysctl.c:215 [inline] kern_sysctl_dirs(4e,ffff800032cac7c8,1,4000000001c0,ffff800032cac7f8,0,a0412df3a95fbafe,1) at kern_sysctl_dirs+0x363 sys/kern/kern_sysctl.c:432 kern_sysctl(ffff800032cac7c4,2,4000000001c0,ffff800032cac7f8,0,37,57145ef699ddebd6) at kern_sysctl+0x12d sys/kern/kern_sysctl.c:526 sys_sysctl(ffff8000fffee2b8,ffff800032cac930,ffff800032cac880) at sys_sysctl+0x425 syscall(ffff800032cac930) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800032cac930) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x30a674efc00, count: 5 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8343f325) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833e6f56,ffffffff83422e1b,6cb,ffffffff83334d03) at __assert+0x29 uvm_fault_unwire_locked(fffffd806a4ba3c0,400000000000,400000011000) at uvm_fault_unwire_locked+0x4c1 uvm_fault_unwire(fffffd806a4ba3c0,400000000000,400000011000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1702 kern_sysctl_dirs(4e,ffff800032cac7c8,1,4000000001c0,ffff800032cac7f8,0,a0412df3a95fbafe,1) at kern_sysctl_dirs+0x363 sysctl_vsunlock sys/kern/kern_sysctl.c:215 [inline] kern_sysctl_dirs(4e,ffff800032cac7c8,1,4000000001c0,ffff800032cac7f8,0,a0412df3a95fbafe,1) at kern_sysctl_dirs+0x363 sys/kern/kern_sysctl.c:432 kern_sysctl(ffff800032cac7c4,2,4000000001c0,ffff800032cac7f8,0,37,57145ef699ddebd6) at kern_sysctl+0x12d sys/kern/kern_sysctl.c:526 sys_sysctl(ffff8000fffee2b8,ffff800032cac930,ffff800032cac880) at sys_sysctl+0x425 syscall(ffff800032cac930) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800032cac930) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x30a674efc00, count: -10