panic: kernel diagnostic assertion "va >= entry->start" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_fault.c", line 1739 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 400597 61740 0 0 0 1 syz-executor *170697 28721 0 0 0x4000000 0K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8343a087) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833e67a4,ffffffff83381c1e,6cb,ffffffff8333b4f7) at __assert+0x29 uvm_fault_unwire_locked(fffffd807e277008,400000000000,400000011000) at uvm_fault_unwire_locked+0x4c1 uvm_fault_unwire(fffffd807e277008,400000000000,400000011000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1702 kern_sysctl_dirs(49,ffff80003c520568,4,400000000100,ffff80003c520598,0,a91aa86dc646ea8c,4) at kern_sysctl_dirs+0x340 sysctl_vsunlock sys/kern/kern_sysctl.c:213 [inline] kern_sysctl_dirs(49,ffff80003c520568,4,400000000100,ffff80003c520598,0,a91aa86dc646ea8c,4) at kern_sysctl_dirs+0x340 sys/kern/kern_sysctl.c:430 kern_sysctl(ffff80003c520564,5,400000000100,ffff80003c520598,0,37,eeffc913791cfb29) at kern_sysctl+0x12d sys/kern/kern_sysctl.c:524 sys_sysctl(ffff8000ffff4f90,ffff80003c5206d0,ffff80003c520620) at sys_sysctl+0x425 syscall(ffff80003c5206d0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c5206d0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2bf3ddaf450, 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/multicore/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(ffffffff8343a087) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833e67a4,ffffffff83381c1e,6cb,ffffffff8333b4f7) at __assert+0x29 uvm_fault_unwire_locked(fffffd807e277008,400000000000,400000011000) at uvm_fault_unwire_locked+0x4c1 uvm_fault_unwire(fffffd807e277008,400000000000,400000011000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1702 kern_sysctl_dirs(49,ffff80003c520568,4,400000000100,ffff80003c520598,0,a91aa86dc646ea8c,4) at kern_sysctl_dirs+0x340 sysctl_vsunlock sys/kern/kern_sysctl.c:213 [inline] kern_sysctl_dirs(49,ffff80003c520568,4,400000000100,ffff80003c520598,0,a91aa86dc646ea8c,4) at kern_sysctl_dirs+0x340 sys/kern/kern_sysctl.c:430 kern_sysctl(ffff80003c520564,5,400000000100,ffff80003c520598,0,37,eeffc913791cfb29) at kern_sysctl+0x12d sys/kern/kern_sysctl.c:524 sys_sysctl(ffff8000ffff4f90,ffff80003c5206d0,ffff80003c520620) at sys_sysctl+0x425 syscall(ffff80003c5206d0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c5206d0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2bf3ddaf450, count: -10 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c520140 rbx 0xffffffff837a7dc7 cpu_info_full_primary+0x2dc7 rdx 0 rcx 0xffff8000ffff4f90 rax 0xffffffff837a6ff0 cpu_info_full_primary+0x1ff0 r8 0 r9 0x8080808080808080 r10 0xc31288427e819d47 r11 0x255f9925f22e646a r12 0xffffffff837a7bc8 cpu_info_full_primary+0x2bc8 r13 0 r14 0 r15 0x1 rip 0xffffffff82606ac5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c520130 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=170697 pid=28721 tcnt=4 stat=onproc flags process=0 proc=4000000 runpri=36, usrpri=50, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffff54b0,0xffffffff838eb850 process=0xffff80003c5006f0 user=0xffff80003c51b000, vmspace=0xfffffd807e277008 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 91420 28634 26626 0 2 0 syz-executor 61740 400597 85456 0 7 0 syz-executor 28721 176041 72358 0 2 0 syz-executor 28721 330365 72358 0 3 0x4000080 fsleep syz-executor 28721 468586 72358 0 3 0x4000080 fsleep syz-executor *28721 170697 72358 0 7 0x4000000 syz-executor 20526 369789 63231 0 2 0 syz-executor 20526 430803 63231 0 3 0x4000080 fsleep syz-executor 59028 140036 0 0 3 0x14200 bored sosplice 79325 7867 82843 0 3 0x80 nanoslp syz-executor 79325 119756 82843 0 3 0x4000080 kqsel syz-executor 79325 90547 82843 0 3 0x4000080 fsleep syz-executor 58454 431205 95696 0 2 0x480 syz-executor 58454 301569 95696 0 3 0x4000080 sbwait syz-executor 58454 91718 95696 0 3 0x4000080 fsleep syz-executor 58454 110970 95696 0 3 0x4000080 fsleep syz-executor 27212 475240 93120 0 2 0x480 syz-executor 27212 343887 93120 0 3 0x4000080 kqread syz-executor 27212 522336 93120 0 3 0x4000080 fsleep syz-executor 63231 432019 31714 0 2 0x482 syz-executor 82843 472418 31714 0 3 0x82 nanoslp syz-executor 26626 51078 31714 0 2 0x482 syz-executor 85456 96 31714 0 2 0x482 syz-executor 90128 418042 31714 0 2 0x482 syz-executor 95696 340729 31714 0 2 0x482 syz-executor 93120 294278 31714 0 2 0x482 syz-executor 72358 30661 31714 0 2 0x482 syz-executor 31714 6603 25400 0 3 0x82 kqread syz-executor 25400 185816 17744 0 3 0x10008a sigsusp ksh 17744 219532 78765 0 3 0x98 kqread sshd-session 78765 504970 37049 0 3 0x92 kqread sshd-session 45333 444550 1 0 3 0x100083 ttyin getty 37049 340953 1 0 3 0x88 kqread sshd 145 25336 65510 74 3 0x1100092 bpf pflogd 65510 270282 1 0 3 0x80 sbwait pflogd 5595 67834 56349 73 3 0x1100090 kqread syslogd 56349 244988 1 0 3 0x100082 sbwait syslogd 76745 87824 1 0 3 0x100080 kqread resolvd 13853 352198 59094 77 3 0x100092 kqread dhcpleased 37637 15225 59094 77 3 0x100092 kqread dhcpleased 59094 224611 1 0 3 0x80 kqread dhcpleased 2223 100651 0 0 3 0x14200 bored smr 84812 302915 0 0 2 0x14200 zerothread 62092 301933 0 0 3 0x14200 aiodoned aiodoned 58399 334628 0 0 3 0x14200 syncer update 43209 333459 0 0 3 0x14200 cleaner cleaner 95996 188217 0 0 3 0x14200 reaper reaper 27268 184081 0 0 3 0x14200 pgdaemon pagedaemon 64302 118627 0 0 3 0x14200 bored viomb 87861 14694 0 0 3 0x40014200 acpi0 acpi0 88897 352927 0 0 3 0x40014200 idle1 54553 341766 0 0 3 0x14200 bored softnet3 69721 163151 0 0 3 0x14200 bored softnet2 73048 213594 0 0 3 0x14200 bored softnet1 22177 102971 0 0 3 0x14200 bored softnet0 80673 512580 0 0 3 0x14200 bored systqmp 1092 44874 0 0 3 0x14200 bored systq 26345 485636 0 0 3 0x14200 tmoslp softclockmp 98990 257690 0 0 2 0x40014200 softclock 32193 135652 0 0 3 0x40014200 idle0 1 122615 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 61740 (syz-executor) thread 0xffff8000ffff42c0 (400597) exclusive rwlock amaplk r = 0 (0xfffffd807cda41e0) #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_check+0x54c sys/uvm/uvm_fault.c:846 #3 uvm_fault+0x106 sys/uvm/uvm_fault.c:668 #4 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #5 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #6 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd806b443d98) #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 28721 (syz-executor) thread 0xffff8000ffff4f90 (170697) exclusive rwlock amaplk r = 0 (0xfffffd8069f938e0) #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 (0xfffffd807e277108) #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 (0xffffffff83925360) #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 (0xffffffff837e7668) #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 10214 11310K 11310K 166960K 11354 0 pcb 17 12K 12K 166960K 34 0 rtable 214 6K 7K 166960K 362 0 pf 34 17K 19K 166960K 51 0 ifaddr 40 6K 7K 166960K 48 0 ifgroup 55 2K 2K 166960K 64 0 sysctl 3 1K 1K 166960K 3 0 counters 64 36K 36K 166960K 70 0 ioctlops 0 0K 4K 166960K 1485 0 iov 0 0K 16K 166960K 2 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1345 85K 85K 166960K 1397 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 5K 166960K 3 0 VM map 2 1K 1K 166960K 2 0 sem 5 0K 0K 166960K 5 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 93K 166960K 189 0 sigio 0 0K 0K 166960K 1 0 proc 71 91K 140K 166960K 536 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 5 0 in_multi 88 6K 7K 166960K 100 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 49 228K 228K 166960K 49 0 exec 0 0K 1K 166960K 379 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 231 72K 77K 166960K 3460 0 UVM aobj 7 2K 2K 166960K 7 0 pinsyscall 43 86K 107K 166960K 1310 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 6 0 NDP 25 1K 2K 166960K 30 0 temp 36 8630K 8696K 166960K 4333 0 kqueue 13 20K 26K 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 36 1 0 1 1 0 8 0 rtentry 112 112 0 13 4 0 4 4 0 8 0 unpcb 144 64 0 41 2 0 2 2 0 8 1 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 808 17 0 11 1 0 1 1 0 8 0 arp 120 18 0 2 1 0 1 1 0 8 0 inpcb 376 104 0 92 3 0 3 3 0 8 1 nd6 136 24 0 3 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1168 1 0 1 1 0 1 1 0 8 1 pppxif 1472 1 0 1 1 0 1 1 0 8 1 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 20 0 0 1 0 1 1 0 8 0 pfstkey 128 20 0 0 1 0 1 1 0 8 0 pfstate 376 20 0 0 2 0 2 2 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 459 0 50 29 0 29 29 0 8 2 art_table 32 460 0 50 4 0 4 4 0 8 0 art_node 16 111 0 21 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 2 1 0 1 1 0 8 1 semapl 112 3 0 0 1 0 1 1 0 8 0 shmpl 112 4 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1636 0 124 95 0 95 95 0 8 0 ffsino 280 1636 0 124 109 0 109 109 0 8 0 nchpl 144 1903 0 1385 63 0 63 63 0 8 39 uvmvnodes 80 1752 0 0 36 0 36 36 0 8 0 vnodes 216 1752 0 0 98 0 98 98 0 8 0 namei 1024 5822 0 5822 1 0 1 1 0 8 1 percpumem 16 49 0 3 1 0 1 1 0 8 0 kstatmem 264 28 0 4 2 0 2 2 0 8 0 scxspl 216 6154 0 6154 3 1 2 2 1 8 2 plimitpl 152 30 0 13 1 0 1 1 0 8 0 sigapl 424 501 0 450 8 1 7 7 0 8 1 futexpl 64 804 0 797 1 0 1 1 0 8 0 knotepl 120 550 0 0 17 0 17 17 0 8 0 kqueuepl 216 39 0 26 1 0 1 1 0 8 0 pipepl 328 111 0 84 3 0 3 3 0 8 0 fdescpl 504 482 0 450 5 0 5 5 0 8 0 filepl 152 1713 0 1482 10 0 10 10 0 8 0 lockfpl 104 19 0 16 1 0 1 1 0 8 0 lockfspl 48 10 0 7 1 0 1 1 0 8 0 sessionpl 144 22 0 13 1 0 1 1 0 8 0 pgrppl 48 30 0 13 1 0 1 1 0 8 0 ucredpl 104 119 0 106 1 0 1 1 0 8 0 zombiepl 144 451 0 450 1 0 1 1 0 8 0 processpl 1168 501 0 450 5 0 5 5 0 8 1 procpl 656 592 0 530 7 1 6 6 0 8 0 sockpl 688 208 0 169 5 0 5 5 0 8 0 mcl64k 65536 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 115 0 0 15 0 15 15 0 8 0 mcl2k 2048 23 0 0 3 0 3 3 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 151 0 0 10 0 10 10 0 8 0 bufpl 280 2392 0 129 162 0 162 162 0 8 0 anonpl 24 104477 0 101102 25 0 25 25 0 184 3 amapchunkpl 152 10265 0 9763 22 0 22 22 0 158 1 amappl16 200 2028 0 2006 5 0 5 5 0 8 3 amappl15 192 8 0 8 1 0 1 1 0 8 1 amappl14 184 110 0 98 1 0 1 1 0 8 0 amappl13 176 3 0 3 1 0 1 1 0 8 1 amappl12 168 1139 0 1108 3 1 2 2 0 8 0 amappl11 160 54 0 40 1 0 1 1 0 8 0 amappl10 152 7 0 7 1 0 1 1 0 8 1 amappl9 144 246 0 245 1 0 1 1 0 8 0 amappl8 136 23 0 21 1 0 1 1 0 8 0 amappl7 128 111 0 99 1 0 1 1 0 8 0 amappl6 120 183 0 180 1 0 1 1 0 8 0 amappl5 112 123 0 114 1 0 1 1 0 8 0 amappl4 104 321 0 302 1 0 1 1 0 8 0 amappl3 96 1616 0 1502 4 0 4 4 0 8 0 amappl2 88 653 0 593 2 0 2 2 0 8 0 amappl1 80 8065 0 7488 14 0 14 14 0 8 1 amappl 88 3078 0 2904 5 0 5 5 0 92 0 dma65536 65536 1 0 1 1 0 1 1 0 8 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 6 0 0 1 0 1 1 0 8 0 uaddrrnd 24 482 0 450 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 482 0 450 1 0 1 1 0 8 0 vmmpekpl 168 5639 0 5608 2 0 2 2 0 8 0 vmmpepl 168 36051 0 34163 84 0 84 84 0 357 0 vmsppl 456 481 0 450 5 0 5 5 0 8 1 rwobjpl 64 15151 0 12468 44 0 44 44 0 8 0 pdppl 4096 972 0 900 102 16 86 86 0 8 14 pvpl 32 10659 0 0 86 0 86 86 0 265 0 pmappl 248 481 0 450 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 278 0 18 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(ffffffff8343a087) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833e67a4,ffffffff83381c1e,6cb,ffffffff8333b4f7) at __assert+0x29 uvm_fault_unwire_locked(fffffd807e277008,400000000000,400000011000) at uvm_fault_unwire_locked+0x4c1 uvm_fault_unwire(fffffd807e277008,400000000000,400000011000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1702 kern_sysctl_dirs(49,ffff80003c520568,4,400000000100,ffff80003c520598,0,a91aa86dc646ea8c,4) at kern_sysctl_dirs+0x340 sysctl_vsunlock sys/kern/kern_sysctl.c:213 [inline] kern_sysctl_dirs(49,ffff80003c520568,4,400000000100,ffff80003c520598,0,a91aa86dc646ea8c,4) at kern_sysctl_dirs+0x340 sys/kern/kern_sysctl.c:430 kern_sysctl(ffff80003c520564,5,400000000100,ffff80003c520598,0,37,eeffc913791cfb29) at kern_sysctl+0x12d sys/kern/kern_sysctl.c:524 sys_sysctl(ffff8000ffff4f90,ffff80003c5206d0,ffff80003c520620) at sys_sysctl+0x425 syscall(ffff80003c5206d0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c5206d0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2bf3ddaf450, count: -10 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff800029aabff0) 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+0x25 kd_curproc sys/dev/kcov.c:584 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x25 sys/dev/kcov.c:153 __mp_lock(ffffffff83925158) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83925158) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 syscall(ffff80003c0d4450) at syscall+0xae6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c0d4450) at syscall+0xae6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x704dddf10df0, count: 8 ddb{1}> trace x86_ipi_db(ffff800029aabff0) 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+0x25 kd_curproc sys/dev/kcov.c:584 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x25 sys/dev/kcov.c:153 __mp_lock(ffffffff83925158) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83925158) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 syscall(ffff80003c0d4450) at syscall+0xae6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c0d4450) at syscall+0xae6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x704dddf10df0, count: -7