uvm_fault(0xfffffd806e863998, 0x98, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff818db4e8 cs 8 rflags 10246 cr2 98 cpl 0 rsp ffff800037bb9900 gsbase 0xffff8000299adff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff818db4e8 Starting stack trace... panic(ffffffff834831e6) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff800037bb9850) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff80002a233238,fffffd806d6330e0,ffff800037bb9a10) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2771 sys_futimens(ffff80002a233238,ffff800037bb9b60,ffff800037bb9ab0) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2847 syscall(ffff800037bb9b60) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800037bb9b60) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x252c8aa78e0, count: 250 End of stack trace. WARNING: SPL NOT LOWERED ON TRAP EXIT 4 0 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x688 TID PID UID PRFLAGS PFLAGS CPU COMMAND 317878 98042 0 0 0 0 syz-executor *172254 75575 0 0 0 1 syz-executor proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x756111fda200, count: 14 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: uvm_fault(0xfffffd806e863998, 0x98, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x756111fda200, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002ef950a0 rbx 0 rdx 0 rcx 0xffff8000ffffd230 rax 0x2a r8 0xffff80002ef94fd0 r9 0x1 r10 0x31380aa516eb7888 r11 0x830b94766a42497a r12 0 r13 0xffffffff8208b538 Xdoreti+0x18 r14 0 r15 0 rip 0xffffffff818ce4c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80002ef95020 ss 0x10 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=172254 pid=75575 tcnt=2 stat=onproc flags process=0 proc=0 runpri=86, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000fffee2b0,0xffff80002a2334e0 process=0xffff8000ffff04e0 user=0xffff80002ef90000, vmspace=0xfffffd806e8631f8 estcpu=36, cpticks=6, pctcpu=0.0, user=5, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 98042 317878 31424 0 7 0 syz-executor 98042 98322 31424 0 3 0x4000000 sbar syz-executor *75575 172254 59205 0 7 0 syz-executor 75575 290699 59205 0 3 0x4000080 lockf syz-executor 92629 297127 34972 0 2 0 syz-executor 92629 415918 34972 0 3 0x4000080 fsleep syz-executor 92629 463002 34972 0 3 0x4000080 pipewr syz-executor 26892 384423 38312 0 2 0xc80 syz-executor 26892 378898 38312 0 3 0x4000080 rest syz-executor 26892 43379 38312 0 3 0x4000080 fsleep syz-executor 9515 232621 1 0 3 0x82 nanoslp getty 54097 332725 19381 0 2 0xc80 syz-executor 54097 136096 19381 0 3 0x4000080 kqsel syz-executor 54097 100633 19381 0 3 0x4000080 fsleep syz-executor 54097 122998 19381 0 3 0x4000080 fsleep syz-executor 75778 204184 36396 60929 2 0xc90 syz-executor 75778 41519 36396 60929 3 0x4000090 sbwait syz-executor 75778 480147 36396 60929 3 0x4000010 inode syz-executor 75778 276494 36396 60929 3 0x4000010 inode syz-executor 75778 485255 36396 60929 3 0x4000010 inode syz-executor 75778 68643 36396 60929 3 0x4000090 fsleep syz-executor 34972 458499 86832 0 2 0xc82 syz-executor 83264 501610 6494 -1 2 0xc90 syz-executor 83264 473856 6494 -1 3 0x4000090 msgwait syz-executor 83264 356586 6494 -1 3 0x4000090 msgwait syz-executor 83264 213575 6494 -1 3 0x4000090 fsleep syz-executor 5960 495186 86832 0 2 0x2 syz-executor 19381 325849 86832 0 2 0xc82 syz-executor 31424 219565 86832 0 2 0xc82 syz-executor 59205 261340 86832 0 2 0xc82 syz-executor 36396 17126 86832 0 2 0xc82 syz-executor 6494 505109 86832 0 2 0xc82 syz-executor 38312 189772 86832 0 2 0xc82 syz-executor 86832 36604 1 0 3 0x82 kqread syz-executor 83917 458566 94811 74 3 0x1100092 bpf pflogd 94811 311441 1 0 3 0x80 sbwait pflogd 8591 492563 1 73 3 0x1100090 kqread syslogd 25295 398439 0 0 2 0x14a00 smr 46102 68531 0 0 2 0x14200 zerothread 74515 53863 0 0 3 0x14200 aiodoned aiodoned 96655 486743 0 0 3 0x14200 syncer update 13687 350474 0 0 3 0x14200 cleaner cleaner 64879 368958 0 0 3 0x14200 reaper reaper 34518 300986 0 0 3 0x14200 pgdaemon pagedaemon 98264 26839 0 0 3 0x14200 bored viomb 77625 275593 0 0 3 0x40014200 acpi0 acpi0 23503 347567 0 0 3 0x40014200 idle1 73040 73663 0 0 3 0x14200 bored softnet1 88497 55136 0 0 3 0x14200 netlock softnet0 88933 250264 0 0 3 0x14200 smrbar systqmp 48149 197033 0 0 3 0x14200 bored systq 88160 88062 0 0 3 0x14200 tmoslp softclockmp 52413 7501 0 0 3 0x40014200 tmoslp softclock 16936 279204 0 0 3 0x40014200 idle0 1 69523 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 98042 (syz-executor) thread 0xffff80002a233238 (98322) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83971d80) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] #1 syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783 #2 Xsyscall+0x128 Process 75778 (syz-executor) thread 0xffff800036bacd28 (41519) exclusive rrwlock inode r = 0 (0xfffffd806781e7b8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576 #5 vget+0x2a2 sys/kern/vfs_subr.c:686 #6 cache_lookup+0x351 sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x1e3 sys/ufs/ufs/ufs_lookup.c:160 #8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x98a sys/kern/vfs_lookup.c:567 #10 namei+0x7ca sys/kern/vfs_lookup.c:250 #11 vn_open+0x178 sys/kern/vfs_vnops.c:146 #12 vndioctl+0xc43 sys/dev/vnd.c:458 #13 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 #14 vn_ioctl+0xf8 sys/kern/vfs_vnops.c:537 #15 sys_ioctl+0x674 sys/kern/sys_generic.c:-1 #16 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #16 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #17 Xsyscall+0x128 Process 75778 (syz-executor) thread 0xffff8000fffefa08 (480147) exclusive rrwlock inode r = 0 (0xfffffd806781ea08) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576 #5 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 vn_open+0x22e sys/kern/vfs_vnops.c:109 #8 doopenat+0x35b sys/kern/vfs_syscalls.c:1155 #9 sys_open+0x59 sys/kern/vfs_syscalls.c:1063 #10 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #11 Xsyscall+0x128 Process 5960 (syz-executor) thread 0xffff8000fffeefa8 (495186) exclusive rrwlock inode r = 0 (0xfffffd806e7f3118) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576 #5 vget+0x2a2 sys/kern/vfs_subr.c:686 #6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203 #8 ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x98a sys/kern/vfs_lookup.c:567 #11 namei+0x7ca sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1887 #13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806cad7d70) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576 #5 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1887 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #9 Xsyscall+0x128 Process 88933 (systqmp) thread 0xffff8000ffffe298 (250264) shared rwlock systqmp r = 0 (0xffffffff83872d48) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 taskq_thread+0x12a sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11069 12249K 12322K 166960K 12588 0 pcb 19 13K 14K 166960K 105 0 rtable 255 9K 9K 166960K 425 0 pf 37 18K 22K 166960K 106 0 ifaddr 43 7K 8K 166960K 65 0 ifgroup 55 2K 2K 166960K 88 0 sysctl 4 1K 9K 166960K 8 0 counters 70 37K 37K 166960K 112 0 ioctlops 0 0K 4K 166960K 1574 0 iov 0 0K 12K 166960K 14 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1297 82K 82K 166960K 1632 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 12 0K 0K 166960K 85 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 93K 166960K 433 0 sigio 0 0K 0K 166960K 3 0 proc 32 50K 180K 166960K 619 0 subproc 72 4K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 26 0 in_multi 99 7K 7K 166960K 121 0 ether_multi 1 0K 0K 166960K 2 0 mrt 0 0K 0K 166960K 10 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 55 254K 254K 166960K 55 0 exec 0 0K 1K 166960K 443 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 178 93K 194K 166960K 5878 0 UVM aobj 10 2K 2K 166960K 10 0 pinsyscall 25 50K 106K 166960K 1660 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 14 0 NDP 14 0K 2K 166960K 43 0 temp 52 9074K 9138K 166960K 10270 0 kqueue 4 6K 36K 166960K 81 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 57 0 56 1 0 1 1 0 8 0 rtentry 176 126 0 14 6 0 6 6 0 8 0 unpcb 144 304 0 294 6 5 1 6 0 8 0 syncache 336 7 0 7 1 1 0 1 0 8 0 tcpcb 736 151 0 147 7 6 1 7 0 8 0 arp 136 20 0 2 1 0 1 1 0 8 0 inpcb 328 453 0 445 10 8 2 10 0 8 0 nd6 152 28 0 3 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1192 18 0 18 1 1 0 1 0 8 0 pppxif 1576 2 0 2 1 1 0 1 0 8 0 pffrag 232 9 0 0 1 0 1 1 0 482 0 pffrnode 88 8 0 0 1 0 1 1 0 8 0 pffrent 40 10 0 1 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 1 0 0 1 0 1 1 0 8 0 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pfstitem 24 33 0 0 1 0 1 1 0 8 0 pfstkey 128 33 0 0 2 0 2 2 0 8 0 pfstate 448 32 0 0 4 0 4 4 0 8 0 pfrule 1360 34 0 26 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 508 0 50 29 0 29 29 0 8 0 art_table 40 510 0 50 5 0 5 5 0 8 0 art_node 32 126 0 23 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 2 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 80 0 70 1 0 1 1 0 8 0 shmpl 112 7 0 0 1 0 1 1 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 2130 0 667 92 0 92 92 0 8 0 ffsino 296 2130 0 667 114 0 114 114 0 8 0 nchpl 144 2668 0 960 64 0 64 64 0 8 0 rtmask 32 4 0 4 1 1 0 1 0 8 0 vnodes 216 2365 0 0 132 0 132 132 0 8 0 namei 1024 8467 0 8464 2 1 1 2 0 8 0 percpumem 16 71 0 21 1 0 1 1 0 8 0 kstatmem 264 52 0 26 3 1 2 3 0 8 0 scsiplug 72 3 0 3 1 1 0 1 0 8 0 scxspl 216 8646 0 8646 5 4 1 3 1 8 1 plimitpl 152 56 0 44 1 0 1 1 0 8 0 sigapl 424 779 0 741 8 2 6 8 0 8 0 knotepl 120 328 0 0 10 0 10 10 0 8 0 kqueuepl 224 111 0 105 2 1 1 2 0 8 0 pipepl 344 149 0 121 3 0 3 3 0 8 0 fdescpl 528 743 0 721 3 0 3 3 0 8 0 filepl 160 3515 0 3307 16 5 11 16 0 8 0 lockfpl 104 107 0 103 1 0 1 1 0 8 0 lockfspl 48 46 0 44 1 0 1 1 0 8 0 sessionpl 144 40 0 36 1 0 1 1 0 8 0 pgrppl 48 54 0 42 1 0 1 1 0 8 0 ucredpl 104 314 0 304 1 0 1 1 0 8 0 zombiepl 144 741 0 741 2 1 1 1 0 8 1 processpl 1232 779 0 741 6 1 5 6 0 8 0 procpl 664 1235 0 1180 8 2 6 8 0 8 0 sosppl 176 1 0 1 1 1 0 1 0 8 0 sockpl 752 830 0 811 20 16 4 17 0 8 0 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 108 0 0 14 0 14 14 0 8 0 mcl2k 2048 20 0 0 3 0 3 3 0 8 0 mtagpl 96 5 0 0 1 0 1 1 0 8 0 mbufpl 256 180 0 0 12 0 12 12 0 8 0 bufpl 280 2848 0 105 196 0 196 196 0 8 0 anonpl 32 6210 0 0 51 0 51 51 0 246 0 amapchunkpl 152 18398 0 17840 28 4 24 28 0 158 0 amappl16 200 2344 0 2320 6 3 3 5 0 8 0 amappl15 192 20 0 19 1 0 1 1 0 8 0 amappl14 184 453 0 453 1 1 0 1 0 8 0 amappl13 176 133 0 129 1 0 1 1 0 8 0 amappl12 168 1035 0 1014 2 0 2 2 0 8 0 amappl11 160 39 0 39 1 1 0 1 0 8 0 amappl10 152 73 0 66 1 0 1 1 0 8 0 amappl9 144 265 0 265 1 1 0 1 0 8 0 amappl8 136 112 0 110 1 0 1 1 0 8 0 amappl7 128 158 0 152 1 0 1 1 0 8 0 amappl6 120 190 0 189 1 0 1 1 0 8 0 amappl5 112 108 0 103 1 0 1 1 0 8 0 amappl4 104 344 0 334 1 0 1 1 0 8 0 amappl3 96 3442 0 3349 4 0 4 4 0 8 0 amappl2 88 592 0 566 2 0 2 2 0 8 0 amappl1 80 12174 0 11962 20 7 13 20 0 8 0 amappl 88 5045 0 4897 5 0 5 5 0 92 0 uvmvnodes 80 108 0 0 3 0 3 3 0 8 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 9 0 0 1 0 1 1 0 8 0 uaddrrnd 24 743 0 721 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 743 0 721 1 0 1 1 0 8 0 vmmpekpl 168 8219 0 8175 3 0 3 3 0 8 0 vmmpepl 168 56655 0 55538 109 42 67 109 0 357 0 vmsppl 488 742 0 721 5 1 4 5 0 8 0 rwobjpl 80 18871 0 18262 30 4 26 30 0 8 0 pdppl 4096 1493 0 1442 113 60 53 85 0 8 2 pvpl 32 14300 0 0 117 1 116 116 0 265 0 pmappl 256 742 0 721 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 293 0 71 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8394dff0) 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_pc() at __sanitizer_cov_trace_pc+0x33 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:153 __mp_lock(ffffffff83971580) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83971580) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173 syscall(ffff800037bb31b0) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff800037bb31b0) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x704f728b5000, count: 8 ddb{0}> trace x86_ipi_db(ffffffff8394dff0) 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_pc() at __sanitizer_cov_trace_pc+0x33 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:153 __mp_lock(ffffffff83971580) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83971580) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173 syscall(ffff800037bb31b0) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff800037bb31b0) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x704f728b5000, count: -7 ddb{0}>