panic: uvm_fault_unwire_locked: address not in map Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *257110 34317 32767 0x10 0x4000000 0K syz-executor 310409 58751 32767 0x1010 0x4080000 1 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830bbae4) at panic+0x1e5 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806bee3c20,20000000,20001000) at uvm_fault_unwire_locked+0x487 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd806bee3c20,20000000,20001000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1623 kern_sysctl(ffff8000357989a4,2,20000100,ffff8000357989d8,0,37,1ad997a40bedcdfa) at kern_sysctl+0x38e sysctl_vsunlock sys/kern/kern_sysctl.c:204 [inline] kern_sysctl(ffff8000357989a4,2,20000100,ffff8000357989d8,0,37,1ad997a40bedcdfa) at kern_sysctl+0x38e sys/kern/kern_sysctl.c:502 sys_sysctl(ffff800029fe6080,ffff800035798b10,ffff800035798a60) at sys_sysctl+0x422 syscall(ffff800035798b10) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff800035798b10) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x757e67deae0, 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: uvm_fault_unwire_locked: address not in map ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830bbae4) at panic+0x1e5 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806bee3c20,20000000,20001000) at uvm_fault_unwire_locked+0x487 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd806bee3c20,20000000,20001000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1623 kern_sysctl(ffff8000357989a4,2,20000100,ffff8000357989d8,0,37,1ad997a40bedcdfa) at kern_sysctl+0x38e sysctl_vsunlock sys/kern/kern_sysctl.c:204 [inline] kern_sysctl(ffff8000357989a4,2,20000100,ffff8000357989d8,0,37,1ad997a40bedcdfa) at kern_sysctl+0x38e sys/kern/kern_sysctl.c:502 sys_sysctl(ffff800029fe6080,ffff800035798b10,ffff800035798a60) at sys_sysctl+0x422 syscall(ffff800035798b10) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff800035798b10) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x757e67deae0, count: -8 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800035798650 rbx 0xffffffff8343bdcf cpu_info_full_primary+0x2dcf rdx 0xffff8000015f6f80 rcx 0xffff800029fe6080 rax 0xffffffff8343aff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x3ba1240ba89c8bbe r11 0xcbe0edefcdc66260 r12 0xffffffff8343bbd0 cpu_info_full_primary+0x2bd0 r13 0 r14 0 r15 0x1 rip 0xffffffff822b4aa5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff800035798640 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=257110 pid=34317 tcnt=4 stat=onproc flags process=10 proc=4000000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000371e0d10,0xffff800029fe6828 process=0xffff8000ffff0db0 user=0xffff800035793000, vmspace=0xfffffd806bee3c20 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 1526 294645 99454 32767 3 0x3010 suspend syz-executor 1526 225322 99454 32767 2 0x4081090 syz-executor 1526 322860 99454 32767 2 0x4081090 syz-executor 34317 61821 53330 32767 2 0x490 syz-executor 34317 84375 53330 32767 2 0x4000010 syz-executor *34317 257110 53330 32767 7 0x4000010 syz-executor 34317 151438 53330 32767 3 0x4000090 fsleep syz-executor 58288 290219 42765 32767 2 0x490 syz-executor 58288 291587 42765 32767 3 0x4000090 fsleep syz-executor 58288 380222 42765 32767 3 0x4000090 fsleep syz-executor 58288 97286 42765 32767 3 0x4000090 fsleep syz-executor 58288 359126 42765 32767 3 0x4000090 fsleep syz-executor 81648 213108 59379 32767 2 0x490 syz-executor 81648 183569 59379 32767 3 0x4000090 sbwait syz-executor 81648 203430 59379 32767 3 0x4000090 fsleep syz-executor 72604 244062 48406 32767 2 0x490 syz-executor 72604 114521 48406 32767 3 0x4000090 sbwait syz-executor 72604 155840 48406 32767 3 0x4000090 fsleep syz-executor 58751 355029 19550 32767 3 0x3010 suspend syz-executor 58751 310409 19550 32767 7 0x4081010 syz-executor 99454 54027 26967 32767 2 0x490 syz-executor 26967 57009 29291 0 3 0x82 wait syz-executor 19550 190459 44004 32767 2 0x490 syz-executor 44004 46319 29291 0 3 0x82 wait syz-executor 14333 288427 34816 32767 2 0x490 syz-executor 34816 3964 29291 0 3 0x82 wait syz-executor 48406 302211 2438 32767 2 0x490 syz-executor 2438 499099 29291 0 3 0x82 wait syz-executor 29681 150632 81236 0 3 0x82 netio sshd-session 72348 467070 63509 32767 3 0x90 wait syz-executor 63509 3 29291 0 3 0x82 wait syz-executor 42765 206874 3991 32767 2 0x490 syz-executor 3991 321356 29291 0 3 0x82 wait syz-executor 53330 491322 21263 32767 2 0x490 syz-executor 21263 123930 29291 0 3 0x82 wait syz-executor 59379 7520 18571 32767 2 0x490 syz-executor 18571 145450 29291 0 3 0x82 wait syz-executor 37022 134881 81236 0 3 0x82 netio sshd-session 28347 58302 2696 0 3 0x100082 sbwait arp 2696 211247 3741 0 3 0x10008a sigsusp sh 3741 263738 1 0 3 0x80 wait syz-executor 22650 261935 96105 0 3 0x100082 sbwait arp 96105 296948 99491 0 3 0x10008a sigsusp sh 99491 66943 1 0 3 0x80 wait syz-executor 3493 88686 88189 0 3 0x100082 sbwait arp 88189 294128 27487 0 3 0x10008a sigsusp sh 27487 439544 1 0 3 0x80 wait syz-executor 71505 487368 0 0 3 0x14200 bored sosplice 29291 94204 2987 0 3 0x82 kqread syz-executor 2987 282320 11242 0 3 0x10008a sigsusp ksh 11242 148061 75098 0 3 0x98 kqread sshd-session 75098 281528 81236 0 3 0x92 kqread sshd-session 11842 209940 1 0 3 0x100083 ttyin getty 81236 238948 1 0 3 0x88 kqread sshd 19901 460323 78049 73 3 0x1100090 kqread syslogd 78049 229444 1 0 3 0x100082 sbwait syslogd 53481 462415 1 0 3 0x100080 kqread resolvd 98467 26160 43507 77 3 0x100092 kqread dhcpleased 83728 405317 43507 77 3 0x100092 kqread dhcpleased 43507 73571 1 0 3 0x80 kqread dhcpleased 44867 214771 0 0 3 0x14200 bored smr 52545 56104 0 0 3 0x14200 pgzero zerothread 16161 220332 0 0 3 0x14200 aiodoned aiodoned 51261 155229 0 0 3 0x14200 syncer update 3606 53678 0 0 3 0x14200 cleaner cleaner 33898 238579 0 0 3 0x14200 reaper reaper 26169 263165 0 0 3 0x14200 pgdaemon pagedaemon 46780 262419 0 0 3 0x14200 bored viomb 29627 378568 0 0 3 0x40014200 acpi0 acpi0 60938 133080 0 0 3 0x40014200 idle1 84138 216822 0 0 3 0x14200 bored softnet3 68001 366044 0 0 3 0x14200 bored softnet2 23530 281433 0 0 3 0x14200 bored softnet1 46226 109136 0 0 3 0x14200 bored softnet0 86674 243735 0 0 3 0x14200 bored systqmp 15834 508704 0 0 3 0x14200 bored systq 12964 335980 0 0 3 0x14200 tmoslp softclockmp 38114 342590 0 0 3 0x40014200 tmoslp softclock 97855 29438 0 0 3 0x40014200 idle0 1 188990 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 34317 (syz-executor) thread 0xffff800029fe6080 (257110) shared rwlock vmmaplk r = 0 (0xfffffd806bee3d10) #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:1622 #2 kern_sysctl+0x38e sysctl_vsunlock sys/kern/kern_sysctl.c:204 [inline] #2 kern_sysctl+0x38e sys/kern/kern_sysctl.c:502 #3 sys_sysctl+0x422 #4 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #4 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #5 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83582c48) #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+0x658 sys/kern/sched_bsd.c:460 #3 sleep_finish+0x219 sys/kern/kern_synch.c:416 #4 rw_enter+0x348 sys/kern/kern_rwlock.c:285 #5 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #6 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #7 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #8 vfs_getcwd_common+0xd1 sys/kern/vfs_getcwd.c:287 #9 sysctl_proc_cwd+0x2b2 sys/kern/kern_sysctl.c:2318 #10 kern_sysctl+0x320 sys/kern/kern_sysctl.c:500 #11 sys_sysctl+0x422 #12 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #12 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #13 Xsyscall+0x128 exclusive rwlock sysctllk r = 0 (0xffffffff834344e0) #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:176 #3 kern_sysctl+0x1b3 sys/kern/kern_sysctl.c:498 #4 sys_sysctl+0x422 #5 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #5 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #6 Xsyscall+0x128 Process 58751 (syz-executor) thread 0xffff8000371e0578 (310409) shared rwlock vmmaplk r = 0 (0xfffffd806bee3ec8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 #2 uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 #3 uvm_fault+0x112 sys/uvm/uvm_fault.c:600 #4 kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 #5 kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 #6 alltraps_kern_meltdown+0x7b #7 copyout+0x57 #8 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #8 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10244 14127K 14131K 166960K 15329 0 pcb 17 28K 32K 166960K 29 0 rtable 244 6K 7K 166960K 50594 0 pf 31 16K 16K 166960K 2709 0 ifaddr 42 23K 31K 166960K 5377 0 ifgroup 50 2K 2K 166960K 5398 0 sysctl 4 1K 5K 166960K 94 0 counters 64 36K 36K 166960K 2734 0 ioctlops 0 0K 2K 166960K 4077 0 iov 0 0K 32K 166960K 12118 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1497 94K 94K 166960K 43128 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 13K 166960K 2248 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 4681 0 dirhash 36 6K 7K 166960K 2853 0 ACPI 1690 195K 286K 166960K 12418 0 file desc 36 134K 193K 166960K 123156 0 sigio 0 0K 0K 166960K 5298 0 proc 58 79K 176K 166960K 49510 0 subproc 143 8K 14K 166960K 19240 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 32417 0 in_multi 101 7K 8K 166960K 20409 0 ether_multi 2 0K 0K 166960K 878 0 mrt 2 0K 0K 166960K 31 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 403 1791K 1791K 166960K 403 0 exec 0 0K 1K 166960K 41879 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 381 104K 156K 166960K 1098560 0 UVM aobj 131 6K 7K 166960K 149 0 pinsyscall 63 126K 154K 166960K 163706 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 9680 0 NDP 11 0K 2K 166960K 4012 0 temp 88 6824K 6953K 166960K 846751 0 kqueue 16 26K 38K 166960K 21897 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 21126 0 21120 166 165 1 5 0 8 0 rtentry 112 16124 0 16009 15 11 4 4 0 8 0 unpcb 144 126158 0 126132 457 454 3 13 0 8 1 syncache 336 2368 0 2368 32 31 1 1 0 8 1 tcpqe 32 1045 0 1045 90 90 0 1 0 8 0 tcpcb 808 87662 0 87584 406 389 17 28 0 8 0 arp 120 2754 0 2735 1 0 1 1 0 8 0 ipq 40 861 0 858 4 3 1 1 0 8 0 ipqe 40 13919 0 13916 4 3 1 1 0 8 0 inpcb 336 194930 0 194845 538 522 16 27 0 8 1 ip6q 72 23 0 23 21 21 0 1 0 8 0 ip6af 40 45 0 45 21 21 0 1 0 8 0 nd6 136 5333 0 5305 24 22 2 2 0 8 0 kcovpl 48 1480 0 1469 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 64977 0 64504 229 198 31 33 0 8 0 art_table 32 64978 0 64504 23 18 5 5 0 8 0 art_node 16 16123 0 16018 1 0 1 1 0 8 0 sysvmsgpl 40 33 0 17 1 0 1 1 0 8 0 semapl 112 4674 0 4664 1 0 1 1 0 8 0 shmpl 112 146 0 18 5 1 4 4 0 8 0 dirhash 1024 1939 0 1893 49 42 7 7 0 8 1 dino2pl 256 170996 0 163776 452 0 452 452 0 8 0 ffsino 272 170996 0 163776 483 1 482 482 0 8 0 nchpl 144 318611 0 315372 121 0 121 121 0 8 0 uvmvnodes 80 13705 0 0 280 0 280 280 0 8 0 vnodes 216 13705 0 0 762 0 762 762 0 8 0 namei 1024 1316648 0 1316648 61 60 1 2 0 8 1 percpumem 16 1381 0 1335 1 0 1 1 0 8 0 kstatmem 264 2692 0 2670 3 1 2 2 0 8 0 scxspl 216 1047952 0 1047952 242 239 3 8 1 8 3 plimitpl 152 44566 0 44537 2 0 2 2 0 8 0 sigapl 424 121483 0 121415 16 7 9 10 0 8 0 futexpl 64 1601260 0 1601253 31 30 1 1 0 8 0 knotepl 120 3562 0 0 26 1 25 25 0 8 0 kqueuepl 216 47875 0 47861 405 403 2 9 0 8 1 pipepl 320 24302 0 24262 267 263 4 13 0 8 0 fdescpl 496 121464 0 121415 16 9 7 8 0 8 0 filepl 152 939744 0 939419 495 478 17 30 0 8 1 lockfpl 104 37041 0 37038 15 14 1 2 0 8 0 lockfspl 48 10485 0 10482 1 0 1 1 0 8 0 sessionpl 144 2349 0 2328 3 1 2 2 0 8 0 pgrppl 48 7253 0 7224 1 0 1 1 0 8 0 ucredpl 104 195075 0 195056 1 0 1 1 0 8 0 zombiepl 144 121419 0 121415 1 0 1 1 0 8 0 processpl 1160 121483 0 121415 7 1 6 6 0 8 0 procpl 648 299473 0 299391 17 9 8 8 0 8 0 srpgc 96 53 0 53 21 21 0 1 0 8 0 sosppl 168 1663 0 1649 22 21 1 1 0 8 0 sockpl 664 345408 0 345294 841 820 21 47 0 8 2 mcl64k 65536 201 0 0 7 4 3 4 0 8 0 mcl16k 16384 15 0 0 2 0 2 2 0 8 0 mcl12k 12288 6 0 0 1 0 1 1 0 8 0 mcl9k 9216 5 0 0 1 0 1 1 0 8 0 mcl8k 8192 34 0 0 4 1 3 3 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 8 0 0 1 0 1 1 0 8 0 mcl2k 2048 1541 0 0 34 12 22 29 0 8 0 mtagpl 96 35 0 0 1 0 1 1 0 8 0 mbufpl 256 10145 0 0 474 0 474 474 0 8 0 bufpl 280 202294 0 188588 980 0 980 980 0 8 0 anonpl 24 14565916 0 14541960 943 768 175 198 0 185 0 amapchunkpl 152 3598212 0 3597110 903 848 55 61 0 158 11 amappl16 200 356010 0 355073 860 797 63 75 0 8 0 amappl15 192 43 0 43 32 32 0 1 0 8 0 amappl14 184 4854 0 4838 5 4 1 2 0 8 0 amappl13 176 229 0 229 114 114 0 1 0 8 0 amappl12 168 144316 0 144262 6 3 3 3 0 8 0 amappl11 160 65 0 54 1 0 1 1 0 8 0 amappl10 152 9 0 8 2 1 1 1 0 8 0 amappl9 144 162 0 160 2 1 1 1 0 8 0 amappl8 136 39 0 36 1 0 1 1 0 8 0 amappl7 128 3860 0 3844 1 0 1 1 0 8 0 amappl6 120 13455 0 13449 1 0 1 1 0 8 0 amappl5 112 6453 0 6440 1 0 1 1 0 8 0 amappl4 104 8505 0 8485 1 0 1 1 0 8 0 amappl3 96 750273 0 750086 7 2 5 5 0 8 0 amappl2 88 31275 0 31187 6 3 3 3 0 8 0 amappl1 80 710464 0 709650 75 55 20 28 0 8 1 amappl 88 1073585 0 1073283 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 72 148 0 18 3 0 3 3 0 8 0 uaddrrnd 24 121464 0 121415 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 121464 0 121415 1 0 1 1 0 8 0 vmmpekpl 168 1093289 0 1093225 6 1 5 5 0 8 0 vmmpepl 168 7984079 0 7980398 975 788 187 203 0 357 15 vmsppl 440 121463 0 121415 15 8 7 7 0 8 0 rwobjpl 56 1959879 0 1943774 323 93 230 232 0 8 0 pdppl 4096 242935 0 242830 2652 2543 109 131 0 8 4 pvpl 32 51351 0 0 391 0 391 391 0 265 0 pmappl 248 121463 0 121415 5 1 4 4 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 5430 0 3805 48 1 47 47 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(ffffffff830bbae4) at panic+0x1e5 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806bee3c20,20000000,20001000) at uvm_fault_unwire_locked+0x487 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd806bee3c20,20000000,20001000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1623 kern_sysctl(ffff8000357989a4,2,20000100,ffff8000357989d8,0,37,1ad997a40bedcdfa) at kern_sysctl+0x38e sysctl_vsunlock sys/kern/kern_sysctl.c:204 [inline] kern_sysctl(ffff8000357989a4,2,20000100,ffff8000357989d8,0,37,1ad997a40bedcdfa) at kern_sysctl+0x38e sys/kern/kern_sysctl.c:502 sys_sysctl(ffff800029fe6080,ffff800035798b10,ffff800035798a60) at sys_sysctl+0x422 syscall(ffff800035798b10) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff800035798b10) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x757e67deae0, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff800029b7bff0) 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_const_cmp8(ffff80003700bc40,ffff80003700bc40) at __sanitizer_cov_trace_const_cmp8+0x3f sys/dev/kcov.c:242 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x57 syscall(ffff80003700c090) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80003700c090) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5a5363f1af0, count: 7 ddb{1}> trace x86_ipi_db(ffff800029b7bff0) 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_const_cmp8(ffff80003700bc40,ffff80003700bc40) at __sanitizer_cov_trace_const_cmp8+0x3f sys/dev/kcov.c:242 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x57 syscall(ffff80003700c090) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80003700c090) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5a5363f1af0, count: -8