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 271727 38435 32767 0x10 0 1 syz-executor * 64682 38435 32767 0x10 0x4000000 0K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff83435d5a) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833e5408,ffffffff83425f3e,6cb,ffffffff83338317) at __assert+0x29 uvm_fault_unwire_locked(fffffd806c19a908,400000000000,400000011000) at uvm_fault_unwire_locked+0x4c1 uvm_fault_unwire(fffffd806c19a908,400000000000,400000011000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1702 kern_sysctl_dirs(4e,ffff80002a3bcbf8,1,4000000001c0,ffff80002a3bcc28,0,fbb7e91260cd242a,1) at kern_sysctl_dirs+0x340 sysctl_vsunlock sys/kern/kern_sysctl.c:213 [inline] kern_sysctl_dirs(4e,ffff80002a3bcbf8,1,4000000001c0,ffff80002a3bcc28,0,fbb7e91260cd242a,1) at kern_sysctl_dirs+0x340 sys/kern/kern_sysctl.c:430 kern_sysctl(ffff80002a3bcbf4,2,4000000001c0,ffff80002a3bcc28,0,37,651de42088cb1b21) at kern_sysctl+0x12d sys/kern/kern_sysctl.c:524 sys_sysctl(ffff8000340acf58,ffff80002a3bcd60,ffff80002a3bccb0) at sys_sysctl+0x425 syscall(ffff80002a3bcd60) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3bcd60) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1bcb9afe9d0, 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: kernel diagnostic assertion "va >= entry->start" failed: file "/syzkaller/managers/setuid/kernel/sys/uvm/uvm_fault.c", line 1739 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff83435d5a) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833e5408,ffffffff83425f3e,6cb,ffffffff83338317) at __assert+0x29 uvm_fault_unwire_locked(fffffd806c19a908,400000000000,400000011000) at uvm_fault_unwire_locked+0x4c1 uvm_fault_unwire(fffffd806c19a908,400000000000,400000011000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1702 kern_sysctl_dirs(4e,ffff80002a3bcbf8,1,4000000001c0,ffff80002a3bcc28,0,fbb7e91260cd242a,1) at kern_sysctl_dirs+0x340 sysctl_vsunlock sys/kern/kern_sysctl.c:213 [inline] kern_sysctl_dirs(4e,ffff80002a3bcbf8,1,4000000001c0,ffff80002a3bcc28,0,fbb7e91260cd242a,1) at kern_sysctl_dirs+0x340 sys/kern/kern_sysctl.c:430 kern_sysctl(ffff80002a3bcbf4,2,4000000001c0,ffff80002a3bcc28,0,37,651de42088cb1b21) at kern_sysctl+0x12d sys/kern/kern_sysctl.c:524 sys_sysctl(ffff8000340acf58,ffff80002a3bcd60,ffff80002a3bccb0) at sys_sysctl+0x425 syscall(ffff80002a3bcd60) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3bcd60) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1bcb9afe9d0, count: -10 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a3bc7d0 rbx 0xffffffff837a2dc7 cpu_info_full_primary+0x2dc7 rdx 0 rcx 0xffff8000340acf58 rax 0xffffffff837a1ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x9a6fb469756600ea r11 0x48d06ab2bc62e436 r12 0xffffffff837a2bc8 cpu_info_full_primary+0x2bc8 r13 0 r14 0 r15 0x1 rip 0xffffffff81ae9705 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a3bc7c0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=64682 pid=38435 tcnt=4 stat=onproc flags process=10 proc=4000000 runpri=36, usrpri=50, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000340ac2b0,0xffff8000ffffa2a8 process=0xffff80003c4ee260 user=0xffff80002a3b7000, vmspace=0xfffffd806c19a908 estcpu=22, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 4185 398706 12532 32767 2 0x10 syz-executor 10320 406805 43757 0 2 0x100000 sh 43757 75502 18136 0 3 0x10008a sigsusp sh 38435 271727 91976 32767 7 0x10 syz-executor *38435 64682 91976 32767 7 0x4000010 syz-executor 38435 16050 91976 32767 2 0x4000010 syz-executor 38435 361945 91976 32767 2 0x4000010 syz-executor 18368 100830 37422 0 2 0 syz-executor 29613 119433 91533 32767 2 0x10 syz-executor 29613 92495 91533 32767 3 0x4000090 fsleep syz-executor 18136 159099 41883 0 3 0x80 wait syz-executor 41883 291419 23829 0 3 0x82 wait syz-executor 37422 16441 23829 0 3 0x82 wait syz-executor 13618 56321 23829 0 2 0x2 syz-executor 10867 225732 39775 32767 2 0x490 syz-executor 10867 241341 39775 32767 3 0x4000090 sbwait syz-executor 10867 388374 39775 32767 3 0x4000090 fsleep syz-executor 10867 38600 39775 32767 3 0x4000090 fsleep syz-executor 43231 129541 26516 32767 2 0x490 syz-executor 43231 451951 26516 32767 3 0x4000090 kqread syz-executor 43231 492508 26516 32767 3 0x4000090 fsleep syz-executor 43231 267790 26516 32767 3 0x4000090 fsleep syz-executor 29188 186951 0 0 3 0x14200 bored sosplice 26516 30184 72613 32767 3 0x90 nanoslp syz-executor 12532 408788 47171 32767 3 0x90 nanoslp syz-executor 39775 9639 537 32767 2 0x490 syz-executor 91533 97344 61725 32767 3 0x90 nanoslp syz-executor 91976 447270 40215 32767 2 0x490 syz-executor 47171 337031 23829 0 3 0x82 wait syz-executor 72613 379979 23829 0 3 0x82 wait syz-executor 61725 408204 23829 0 3 0x82 wait syz-executor 537 154213 23829 0 3 0x82 wait syz-executor 40215 68193 23829 0 3 0x82 wait syz-executor 23829 44307 27658 0 2 0x2 syz-executor 27658 184713 13641 0 3 0x10008a sigsusp ksh 13641 66464 37045 0 3 0x98 kqread sshd-session 37045 62531 26383 0 3 0x92 kqread sshd-session 49215 447544 1 0 3 0x100083 ttyin getty 26383 49273 1 0 3 0x88 kqread sshd 79426 275849 4135 73 3 0x1100090 kqread syslogd 4135 502191 1 0 3 0x100082 sbwait syslogd 30444 55939 1 0 3 0x100080 kqread resolvd 68087 269849 11978 77 3 0x100092 kqread dhcpleased 91760 27650 11978 77 3 0x100092 kqread dhcpleased 11978 505172 1 0 3 0x80 kqread dhcpleased 15712 36535 0 0 3 0x14200 bored smr 41805 52 0 0 2 0x14200 zerothread 61460 287685 0 0 3 0x14200 aiodoned aiodoned 93368 53481 0 0 3 0x14200 syncer update 76862 192992 0 0 3 0x14200 cleaner cleaner 97434 276203 0 0 3 0x14200 reaper reaper 82824 396549 0 0 3 0x14200 pgdaemon pagedaemon 19791 43840 0 0 3 0x14200 bored viomb 8531 367378 0 0 3 0x40014200 acpi0 acpi0 135 144439 0 0 3 0x40014200 idle1 37276 29361 0 0 3 0x14200 bored softnet3 4433 390475 0 0 3 0x14200 bored softnet2 87491 251388 0 0 3 0x14200 bored softnet1 11836 321876 0 0 3 0x14200 bored softnet0 99559 167485 0 0 3 0x14200 bored systqmp 67150 377152 0 0 3 0x14200 bored systq 71073 126368 0 0 3 0x14200 tmoslp softclockmp 71909 172467 0 0 3 0x40014200 tmoslp softclock 66945 305114 0 0 3 0x40014200 idle0 1 217156 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 38435 (syz-executor) thread 0xffff8000340ad978 (271727) exclusive rwlock uobjlk r = 0 (0xfffffd806ce93958) #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_fault+0x1e9 sys/uvm/uvm_fault.c:690 #3 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #4 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #5 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd806c19aa08) #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 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1864 #3 uvm_fault_check+0x4b sys/uvm/uvm_fault.c:732 #4 uvm_fault+0x106 sys/uvm/uvm_fault.c:668 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #6 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #7 recall_trap+0x8 Process 38435 (syz-executor) thread 0xffff8000340acf58 (64682) exclusive rwlock amaplk r = 0 (0xfffffd806ae6cd58) #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+0x340 sysctl_vsunlock sys/kern/kern_sysctl.c:213 [inline] #5 kern_sysctl_dirs+0x340 sys/kern/kern_sysctl.c:430 #6 kern_sysctl+0x12d sys/kern/kern_sysctl.c:524 #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 (0xfffffd806c19aa08) #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+0x340 sysctl_vsunlock sys/kern/kern_sysctl.c:213 [inline] #3 kern_sysctl_dirs+0x340 sys/kern/kern_sysctl.c:430 #4 kern_sysctl+0x12d sys/kern/kern_sysctl.c:524 #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 (0xffffffff838aaab0) #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_read+0x2de sys/kern/kern_rwlock.c:385 #5 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1864 #6 uvm_fault_check+0x4b sys/uvm/uvm_fault.c:732 #7 uvm_fault+0x106 sys/uvm/uvm_fault.c:668 #8 uvm_fault_wire+0x73 sys/uvm/uvm_fault.c:1681 #9 sysctl_vslock+0x109 sys/kern/kern_sysctl.c:195 #10 kern_sysctl_dirs+0x247 sys/kern/kern_sysctl.c:426 #11 kern_sysctl+0x12d sys/kern/kern_sysctl.c:524 #12 sys_sysctl+0x425 #13 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 exclusive rwlock sysctllk r = 0 (0xffffffff838703e8) #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:185 #3 kern_sysctl_dirs+0x247 sys/kern/kern_sysctl.c:426 #4 kern_sysctl+0x12d sys/kern/kern_sysctl.c:524 #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{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10181 10949K 10966K 166960K 11269 0 pcb 17 12K 12K 166960K 17 0 rtable 168 4K 6K 166960K 355 0 pf 27 16K 16K 166960K 33 0 ifaddr 31 5K 7K 166960K 45 0 ifgroup 42 1K 2K 166960K 54 0 sysctl 2 1K 1K 166960K 2 0 counters 60 35K 36K 166960K 66 0 ioctlops 0 0K 2K 166960K 29 0 iov 0 0K 12K 166960K 6 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1334 84K 84K 166960K 1651 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 5 0 VM map 2 1K 1K 166960K 2 0 sem 9 0K 0K 166960K 9 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 24 89K 125K 166960K 298 0 sigio 0 0K 0K 166960K 2 0 proc 58 79K 115K 166960K 495 0 subproc 72 4K 4K 166960K 243 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 16 0 in_multi 66 4K 7K 166960K 103 0 ether_multi 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 67 307K 307K 166960K 67 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 221 61K 74K 166960K 3667 0 UVM aobj 6 2K 2K 166960K 6 0 pinsyscall 45 90K 116K 166960K 1336 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 5 0 NDP 9 0K 2K 166960K 28 0 temp 41 8632K 8696K 166960K 4544 0 kqueue 13 20K 24K 166960K 33 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> 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 40 0 37 1 0 1 1 0 8 0 rtentry 112 111 0 34 4 0 4 4 0 8 0 unpcb 144 97 0 73 2 0 2 2 0 8 0 syncache 336 5 0 5 1 0 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 808 35 0 29 2 0 2 2 0 8 1 arp 120 18 0 6 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 2 0 0 1 0 1 1 0 8 0 inpcb 376 120 0 109 2 0 2 2 0 8 0 nd6 136 24 0 9 1 0 1 1 0 8 0 kcovpl 48 27 0 19 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 452 0 132 29 0 29 29 0 8 4 art_table 32 453 0 132 4 0 4 4 0 8 0 art_node 16 110 0 40 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 3 1 0 1 1 0 8 0 semupl 112 3 0 2 1 0 1 1 0 8 0 semapl 112 7 0 0 1 0 1 1 0 8 0 shmpl 112 3 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1798 0 269 96 0 96 96 0 8 0 ffsino 280 1798 0 269 110 0 110 110 0 8 0 nchpl 144 2109 0 410 64 0 64 64 0 8 0 uvmvnodes 80 2050 0 0 42 0 42 42 0 8 0 vnodes 216 2050 0 0 114 0 114 114 0 8 0 namei 1024 6548 0 6548 1 0 1 1 0 8 1 percpumem 16 47 0 3 1 0 1 1 0 8 0 kstatmem 264 24 0 6 2 0 2 2 0 8 0 scxspl 216 6581 0 6581 9 1 8 8 1 8 8 plimitpl 152 82 0 60 2 0 2 2 0 8 1 sigapl 424 542 0 487 8 0 8 8 0 8 0 futexpl 64 1209 0 1204 1 0 1 1 0 8 0 knotepl 120 312 0 0 10 0 10 10 0 8 0 kqueuepl 216 52 0 42 1 0 1 1 0 8 0 pipepl 328 171 0 144 3 0 3 3 0 8 0 fdescpl 504 523 0 487 7 1 6 6 0 8 0 filepl 152 2419 0 2204 13 0 13 13 0 8 4 lockfpl 104 35 0 33 1 0 1 1 0 8 0 lockfspl 48 14 0 12 1 0 1 1 0 8 0 sessionpl 144 40 0 26 1 0 1 1 0 8 0 pgrppl 48 69 0 47 1 0 1 1 0 8 0 ucredpl 104 567 0 551 1 0 1 1 0 8 0 zombiepl 144 487 0 487 1 0 1 1 0 8 1 processpl 1168 542 0 487 5 0 5 5 0 8 0 procpl 648 685 0 620 6 0 6 6 0 8 0 sockpl 688 259 0 221 5 0 5 5 0 8 0 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 122 0 0 16 0 16 16 0 8 0 mcl2k 2048 26 0 0 4 0 4 4 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 219 0 0 14 0 14 14 0 8 0 bufpl 280 2364 0 124 160 0 160 160 0 8 0 anonpl 24 110498 0 107446 23 2 21 23 0 184 0 amapchunkpl 152 11250 0 10765 24 0 24 24 0 158 3 amappl16 200 2206 0 2193 5 3 2 5 0 8 0 amappl15 192 10 0 10 1 1 0 1 0 8 0 amappl14 184 142 0 132 1 0 1 1 0 8 0 amappl13 176 6 0 6 1 1 0 1 0 8 0 amappl12 168 1134 0 1100 2 0 2 2 0 8 0 amappl11 160 48 0 38 1 0 1 1 0 8 0 amappl10 152 9 0 9 1 1 0 1 0 8 0 amappl9 144 244 0 244 1 1 0 1 0 8 0 amappl8 136 24 0 23 1 0 1 1 0 8 0 amappl7 128 130 0 120 1 0 1 1 0 8 0 amappl6 120 192 0 188 1 0 1 1 0 8 0 amappl5 112 121 0 114 1 0 1 1 0 8 0 amappl4 104 293 0 278 1 0 1 1 0 8 0 amappl3 96 1817 0 1708 4 0 4 4 0 8 0 amappl2 88 639 0 584 2 0 2 2 0 8 0 amappl1 80 8424 0 7888 14 0 14 14 0 8 1 amappl 88 3292 0 3120 5 0 5 5 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 5 0 0 1 0 1 1 0 8 0 uaddrrnd 24 523 0 487 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 523 0 487 1 0 1 1 0 8 0 vmmpekpl 168 6398 0 6351 3 0 3 3 0 8 0 vmmpepl 168 39048 0 37172 94 0 94 94 0 357 9 vmsppl 456 522 0 487 7 1 6 6 0 8 1 rwobjpl 64 16076 0 13202 47 0 47 47 0 8 0 pdppl 4096 1054 0 974 112 32 80 98 0 8 0 pvpl 32 11177 0 0 91 0 91 91 0 265 0 pmappl 248 522 0 487 4 1 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 296 0 35 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff83435d5a) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833e5408,ffffffff83425f3e,6cb,ffffffff83338317) at __assert+0x29 uvm_fault_unwire_locked(fffffd806c19a908,400000000000,400000011000) at uvm_fault_unwire_locked+0x4c1 uvm_fault_unwire(fffffd806c19a908,400000000000,400000011000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1702 kern_sysctl_dirs(4e,ffff80002a3bcbf8,1,4000000001c0,ffff80002a3bcc28,0,fbb7e91260cd242a,1) at kern_sysctl_dirs+0x340 sysctl_vsunlock sys/kern/kern_sysctl.c:213 [inline] kern_sysctl_dirs(4e,ffff80002a3bcbf8,1,4000000001c0,ffff80002a3bcc28,0,fbb7e91260cd242a,1) at kern_sysctl_dirs+0x340 sys/kern/kern_sysctl.c:430 kern_sysctl(ffff80002a3bcbf4,2,4000000001c0,ffff80002a3bcc28,0,37,651de42088cb1b21) at kern_sysctl+0x12d sys/kern/kern_sysctl.c:524 sys_sysctl(ffff8000340acf58,ffff80002a3bcd60,ffff80002a3bccb0) at sys_sysctl+0x425 syscall(ffff80002a3bcd60) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3bcd60) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1bcb9afe9d0, count: -10 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff800029a9bff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:584 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:153 __mp_lock(ffffffff838aa8a8) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff838aa8a8) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 uvm_fault(fffffd806c19a908,1bc438c0000,0,2) at uvm_fault+0x1ee sys/uvm/uvm_fault.c:691 upageflttrap(ffff80002ec8ecc0,1bc438c0000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002ec8ecc0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x734d009fb500, count: 6 ddb{1}> trace x86_ipi_db(ffff800029a9bff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:584 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:153 __mp_lock(ffffffff838aa8a8) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff838aa8a8) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 uvm_fault(fffffd806c19a908,1bc438c0000,0,2) at uvm_fault+0x1ee sys/uvm/uvm_fault.c:691 upageflttrap(ffff80002ec8ecc0,1bc438c0000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002ec8ecc0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x734d009fb500, count: -9