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 *174867 98067 32767 0x10 0x4000000 1K syz-executor.0 352778 10579 32767 0x10 0 0 syz-executor.2 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff8258c24b) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff825ffe67,ffffffff8255f3ec,66b,ffffffff8256e82b) at __assert+0x25 sys/kern/subr_prf.c:161 uvm_fault_unwire_locked(fffffd807e04d5d8,20000000,20011000) at uvm_fault_unwire_locked+0x2eb sys/uvm/uvm_fault.c:1640 uvm_fault_unwire(fffffd807e04d5d8,20000000,20011000) at uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1601 sys_sysctl(ffff800029537510,ffff80002467c318,ffff80002467c370) at sys_sysctl+0x229 sys/kern/kern_sysctl.c:254 syscall(ffff80002467c3e0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002467c3e0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x612a12964a0, 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(ffffffff8258c24b) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff825ffe67,ffffffff8255f3ec,66b,ffffffff8256e82b) at __assert+0x25 sys/kern/subr_prf.c:161 uvm_fault_unwire_locked(fffffd807e04d5d8,20000000,20011000) at uvm_fault_unwire_locked+0x2eb sys/uvm/uvm_fault.c:1640 uvm_fault_unwire(fffffd807e04d5d8,20000000,20011000) at uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1601 sys_sysctl(ffff800029537510,ffff80002467c318,ffff80002467c370) at sys_sysctl+0x229 sys/kern/kern_sysctl.c:254 syscall(ffff80002467c3e0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002467c3e0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x612a12964a0, count: -8 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002467c0a0 rbx 0xffff800020ce9bff rdx 0 rcx 0 rax 0xffff800029537510 r8 0x101010101010101 r9 0x8080808080808080 r10 0x3878866621ddf431 r11 0x77a97bfabe1e5b46 r12 0xffff800020ce9a00 r13 0 r14 0 r15 0x1 rip 0xffffffff81faa128 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002467c090 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.0) pid=174867 stat=onproc flags process=10 proc=4000000 pri=36, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff8000295362b0,0xffff800029537a60 process=0xffff800029521d38 user=0xffff800024677000, vmspace=0xfffffd807e04d5d8 estcpu=32, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 49026 136174 13888 32767 2 0x10 syz-executor.6 49026 14266 13888 32767 2 0x4000010 syz-executor.6 84685 116604 53111 32767 2 0x10 syz-executor.7 84685 331766 53111 32767 3 0x4000090 fsleep syz-executor.7 98067 65891 27781 32767 2 0x10 syz-executor.0 98067 390905 27781 32767 3 0x4000090 fsleep syz-executor.0 *98067 174867 27781 32767 7 0x4000010 syz-executor.0 98067 288126 27781 32767 3 0x4000090 fsleep syz-executor.0 6059 191499 34710 32767 2 0x10 syz-executor.5 6059 14132 34710 32767 2 0x4000010 syz-executor.5 10579 352778 33356 32767 7 0x10 syz-executor.2 63582 250816 64007 32767 3 0x90 nanoslp syz-executor.3 63582 302820 64007 32767 3 0x4000090 netcon2 syz-executor.3 63582 378440 64007 32767 3 0x4000090 fsleep syz-executor.3 50443 162073 76875 32767 3 0x90 nanoslp syz-executor.4 76875 473908 79997 0 3 0x82 wait syz-executor.4 64007 488741 99578 32767 3 0x90 nanoslp syz-executor.3 99578 448809 79997 0 3 0x82 wait syz-executor.3 31678 229074 0 0 3 0x14200 bored sosplice 34710 454953 23007 32767 3 0x90 nanoslp syz-executor.5 53111 203901 7783 32767 3 0x90 nanoslp syz-executor.7 13888 132995 86939 32767 3 0x90 nanoslp syz-executor.6 23007 49702 79997 0 3 0x82 wait syz-executor.5 86939 219432 79997 0 3 0x82 wait syz-executor.6 7783 457045 79997 0 3 0x82 wait syz-executor.7 33356 120334 63077 32767 3 0x90 nanoslp syz-executor.2 63077 414965 79997 0 3 0x82 wait syz-executor.2 27781 240757 91670 32767 3 0x90 nanoslp syz-executor.0 13043 13220 82258 32767 3 0x90 piperd syz-executor.1 82258 385803 79997 0 3 0x82 wait syz-executor.1 91670 14215 79997 0 3 0x82 wait syz-executor.0 79997 344825 14567 0 3 0x82 thrsleep syz-fuzzer 79997 337614 14567 0 3 0x4000082 nanoslp syz-fuzzer 79997 1727 14567 0 3 0x4000082 thrsleep syz-fuzzer 79997 433582 14567 0 3 0x4000082 thrsleep syz-fuzzer 79997 9802 14567 0 3 0x4000082 kqread syz-fuzzer 79997 116545 14567 0 3 0x4000082 thrsleep syz-fuzzer 79997 279480 14567 0 3 0x4000082 thrsleep syz-fuzzer 79997 487615 14567 0 3 0x4000082 thrsleep syz-fuzzer 79997 389057 14567 0 3 0x4000082 thrsleep syz-fuzzer 14567 124135 55567 0 3 0x10008a sigsusp ksh 55567 198958 87592 0 3 0x9a kqread sshd 63082 225688 1 0 3 0x100083 ttyin getty 87592 278822 1 0 3 0x88 kqread sshd 67330 76614 25362 73 3 0x1100090 kqread syslogd 25362 220417 1 0 3 0x100082 netio syslogd 39318 474682 1 0 3 0x100080 kqread resolvd 16201 344480 87263 77 3 0x100092 kqread dhcpleased 67404 287479 87263 77 3 0x100092 kqread dhcpleased 87263 188911 1 0 3 0x80 kqread dhcpleased 97780 422681 0 0 3 0x14200 bored smr 1261 119307 0 0 2 0x14200 zerothread 75289 288052 0 0 3 0x14200 aiodoned aiodoned 86334 344793 0 0 3 0x14200 syncer update 28676 58333 0 0 3 0x14200 cleaner cleaner 56464 322874 0 0 3 0x14200 reaper reaper 74212 116852 0 0 3 0x14200 pgdaemon pagedaemon 88101 30345 0 0 3 0x14200 bored viomb 75344 460374 0 0 3 0x40014200 acpi0 acpi0 87529 500078 0 0 3 0x40014200 idle1 90129 66748 0 0 3 0x14200 bored softnet 85177 83019 0 0 3 0x14200 bored systqmp 88226 155749 0 0 3 0x14200 bored systq 84554 374129 0 0 3 0x40014200 bored softclock 89725 94057 0 0 3 0x40014200 idle0 1 395704 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 0: exclusive mutex &uvm.pageqlock r = 0 (0xffffffff82b86980) #0 witness_lock+0x44d #1 mtx_enter_try+0x100 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 uvm_fault_upper_lookup+0x1eb sys/uvm/uvm_fault.c:878 #4 uvm_fault+0x139 sys/uvm/uvm_fault.c:607 #5 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 #6 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403 #7 recall_trap+0x8 Process 98067 (syz-executor.0) thread 0xffff800029537510 (174867) exclusive rwlock amaplk r = 0 (0xfffffd8068ec99f0) #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 (0xfffffd807e04d5f0) #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 (0xffffffff82a712b0) #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 uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1758 #6 uvm_fault_check+0x3a sys/uvm/uvm_fault.c:674 #7 uvm_fault+0x102 sys/uvm/uvm_fault.c:602 #8 uvm_fault_wire+0x63 sys/uvm/uvm_fault.c:1580 #9 sys_sysctl+0x2d8 sys/kern/kern_sysctl.c:240 #10 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #10 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #11 Xsyscall+0x128 exclusive rwlock sysctllk r = 0 (0xffffffff82962090) #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 Process 10579 (syz-executor.2) thread 0xffff8000fffefa48 (352778) exclusive rwlock amaplk r = 0 (0xfffffd806c4eb358) #0 witness_lock+0x44d #1 uvm_fault_check+0x3ca sys/uvm/uvm_fault.c:774 #2 uvm_fault+0x102 sys/uvm/uvm_fault.c:602 #3 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 #4 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403 #5 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd807e04d310) #0 witness_lock+0x44d #1 uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1758 #2 uvm_fault_check+0x3a sys/uvm/uvm_fault.c:674 #3 uvm_fault+0x102 sys/uvm/uvm_fault.c:602 #4 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 #5 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403 #6 recall_trap+0x8 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10192 6410K 6419K 78643K 11301 0 pcb 13 12K 14K 78643K 17 0 rtable 262 7K 7K 78643K 1330 0 ifaddr 81 17K 17K 78643K 125 0 sysctl 2 0K 0K 78643K 2 0 counters 56 35K 35K 78643K 68 0 ioctlops 0 0K 2K 78643K 79 0 iov 0 0K 20K 78643K 972 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1271 79K 79K 78643K 2927 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 76 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 985 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 24 89K 121K 78643K 7363 0 sigio 0 0K 0K 78643K 121 0 proc 56 74K 111K 78643K 1054 0 subproc 104 6K 6K 78643K 182 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 432 0 in_multi 99 6K 7K 78643K 228 0 ether_multi 1 0K 0K 78643K 28 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 169 758K 758K 78643K 169 0 exec 0 0K 2K 78643K 1767 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 388 88K 107K 78643K 97040 0 UVM aobj 131 4K 4K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 203 0 NDP 11 0K 2K 78643K 45 0 temp 125 4711K 4782K 78643K 21070 0 kqueue 12 18K 26K 78643K 712 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 120 697 0 694 8 7 1 3 0 8 0 rtentry 112 197 0 75 4 0 4 4 0 8 0 unpcb 136 6320 0 6307 71 66 5 8 0 8 4 syncache 296 96 0 96 13 12 1 1 0 8 1 tcpqe 32 15 0 15 7 7 0 1 0 8 0 tcpcb 736 3416 0 3409 95 85 10 14 0 8 8 arp 120 32 0 14 1 0 1 1 0 8 0 ipq 40 18 0 18 7 7 0 1 0 8 0 ipqe 40 337 0 337 7 7 0 1 0 8 0 inpcb 312 10795 0 10784 116 107 9 12 0 8 8 ip6q 72 14 0 13 2 1 1 1 0 8 0 ip6af 40 34 0 33 2 1 1 1 0 8 0 nd6 48 60 0 24 1 0 1 1 0 8 0 kcovpl 48 14 0 6 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 845 0 289 36 1 35 35 0 8 0 art_table 32 846 0 289 5 0 5 5 0 8 0 art_node 16 196 0 84 1 0 1 1 0 8 0 sysvmsgpl 40 134 0 134 1 1 0 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 983 0 973 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 11612 0 10174 91 0 91 91 0 8 0 ffsino 272 11612 0 10174 97 0 97 97 0 8 0 nchpl 144 21449 0 19826 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 68993 0 68993 4 3 1 2 0 8 1 percpumem 16 46 0 6 1 0 1 1 0 8 0 scxspl 216 71232 0 71232 25 22 3 8 0 8 3 plimitpl 152 1634 0 1612 5 4 1 2 0 8 0 sigapl 424 7629 0 7578 7 0 7 7 0 8 0 futexpl 64 67265 0 67261 4 3 1 1 0 8 0 knotepl 120 501 0 0 11 0 11 11 0 8 0 kqueuepl 216 2673 0 2665 58 55 3 8 0 8 2 pipepl 336 1964 0 1936 51 48 3 13 0 8 0 fdescpl 496 7614 0 7579 7 1 6 6 0 8 0 filepl 152 53658 0 53419 133 118 15 23 0 8 5 lockfpl 104 1378 0 1376 2 1 1 2 0 8 0 lockfspl 48 313 0 311 1 0 1 1 0 8 0 sessionpl 144 29 0 13 1 0 1 1 0 8 0 pgrppl 48 676 0 660 1 0 1 1 0 8 0 ucredpl 96 9322 0 9304 1 0 1 1 0 8 0 zombiepl 144 7579 0 7578 1 0 1 1 0 8 0 processpl 1064 7629 0 7578 5 1 4 4 0 8 0 procpl 672 22247 0 22180 20 13 7 8 0 8 1 sosppl 168 1945 0 1944 4 3 1 1 0 8 0 sockpl 480 18010 0 17983 426 415 11 36 0 8 7 mcl64k 65536 26 0 0 3 0 3 3 0 8 0 mcl16k 16384 25 0 0 4 1 3 3 0 8 0 mcl12k 12288 25 0 0 2 0 2 2 0 8 0 mcl9k 9216 21 0 0 2 0 2 2 0 8 0 mcl8k 8192 92 0 0 9 4 5 8 0 8 1 mcl4k 4096 33 0 0 3 0 3 3 0 8 0 mcl2k2 2112 7 0 0 1 0 1 1 0 8 0 mcl2k 2048 288 0 0 18 4 14 18 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 958 0 0 52 0 52 52 0 8 0 bufpl 288 14910 0 8575 453 0 453 453 0 8 0 anonpl 24 2200553 0 2186381 271 171 100 121 0 186 0 amapchunkpl 152 270204 0 269432 139 106 33 47 0 158 0 amappl16 200 22450 0 22063 112 90 22 34 0 8 0 amappl15 192 1183 0 1175 1 0 1 1 0 8 0 amappl14 184 867 0 863 1 0 1 1 0 8 0 amappl13 176 1033 0 1028 1 0 1 1 0 8 0 amappl12 168 174 0 173 2 1 1 1 0 8 0 amappl11 160 3318 0 3299 1 0 1 1 0 8 0 amappl10 152 940 0 933 1 0 1 1 0 8 0 amappl9 144 474 0 472 1 0 1 1 0 8 0 amappl8 136 1044 0 913 5 0 5 5 0 8 0 amappl7 128 149 0 138 1 0 1 1 0 8 0 amappl6 120 223 0 201 2 1 1 2 0 8 0 amappl5 112 6324 0 6304 1 0 1 1 0 8 0 amappl4 104 5788 0 5748 2 0 2 2 0 8 0 amappl3 96 1681 0 1665 1 0 1 1 0 8 0 amappl2 88 1909 0 1858 3 1 2 3 0 8 0 amappl1 80 140911 0 140278 18 3 15 18 0 8 0 amappl 88 96133 0 95875 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 72 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 7614 0 7579 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 7614 0 7579 1 0 1 1 0 8 0 vmmpekpl 168 64422 0 64374 3 0 3 3 0 8 0 vmmpepl 168 701259 0 698552 220 93 127 137 0 357 2 vmsppl 368 7613 0 7579 4 0 4 4 0 8 0 rwobjpl 56 176945 0 169487 118 10 108 109 0 8 0 pdppl 4096 15235 0 15158 254 173 81 93 0 8 4 pvpl 32 3693728 0 3674254 474 284 190 242 0 265 16 pmappl 248 7613 0 7579 4 1 3 3 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1297 0 428 26 0 26 26 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff8290bff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2f kd_curproc sys/dev/kcov.c:578 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2f sys/dev/kcov.c:148 __mp_lock(ffffffff82a710a8) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82a710a8) at __mp_lock+0x133 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(ffffffff82a710a8) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82a710a8) at __mp_lock+0x122 sys/kern/kern_lock.c:147 syscall(ffff80002cb56f80) at syscall+0x3ef mi_syscall sys/sys/syscall_mi.h:93 [inline] syscall(ffff80002cb56f80) at syscall+0x3ef sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe15b0, count: 5 ddb{0}> trace x86_ipi_db(ffffffff8290bff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2f kd_curproc sys/dev/kcov.c:578 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2f sys/dev/kcov.c:148 __mp_lock(ffffffff82a710a8) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82a710a8) at __mp_lock+0x133 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(ffffffff82a710a8) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82a710a8) at __mp_lock+0x122 sys/kern/kern_lock.c:147 syscall(ffff80002cb56f80) at syscall+0x3ef mi_syscall sys/sys/syscall_mi.h:93 [inline] syscall(ffff80002cb56f80) at syscall+0x3ef sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe15b0, count: -10 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(ffffffff8258c24b) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff825ffe67,ffffffff8255f3ec,66b,ffffffff8256e82b) at __assert+0x25 sys/kern/subr_prf.c:161 uvm_fault_unwire_locked(fffffd807e04d5d8,20000000,20011000) at uvm_fault_unwire_locked+0x2eb sys/uvm/uvm_fault.c:1640 uvm_fault_unwire(fffffd807e04d5d8,20000000,20011000) at uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1601 sys_sysctl(ffff800029537510,ffff80002467c318,ffff80002467c370) at sys_sysctl+0x229 sys/kern/kern_sysctl.c:254 syscall(ffff80002467c3e0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002467c3e0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x612a12964a0, count: 7 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff8258c24b) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff825ffe67,ffffffff8255f3ec,66b,ffffffff8256e82b) at __assert+0x25 sys/kern/subr_prf.c:161 uvm_fault_unwire_locked(fffffd807e04d5d8,20000000,20011000) at uvm_fault_unwire_locked+0x2eb sys/uvm/uvm_fault.c:1640 uvm_fault_unwire(fffffd807e04d5d8,20000000,20011000) at uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1601 sys_sysctl(ffff800029537510,ffff80002467c318,ffff80002467c370) at sys_sysctl+0x229 sys/kern/kern_sysctl.c:254 syscall(ffff80002467c3e0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002467c3e0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x612a12964a0, count: -8