!uvm_fault(0xfffffd800ed759b8, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff822bd948 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80003b8100e0 gsbase 0xffff8000299edff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff822bd948 Starting stack trace... panic(ffffffff833b5ec7) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80003b810030) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff8000013f3000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtioctl(21e5f,80044403,ffff80003b810370,1,ffff8000fffe8fb0) at dtioctl+0x536 sys/dev/dt/dt_dev.c:325 VOP_IOCTL(fffffd805e6ff6d8,80044403,ffff80003b810370,1,fffffd80097fb680,ffff8000fffe8fb0) at VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806cdff0b8,80044403,ffff80003b810370,ffff8000fffe8fb0) at vn_ioctl+0xf8 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff8000fffe8fb0,ffff80003b810550,ffff80003b8104a0) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff80003b810550) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003b810550) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1c02506ae60, count: 247 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 256620 76925 0 0 0 0 syz-executor *473331 90303 0 0 0 1 syz-executor proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7a5557f01bf0, 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}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xfffffd800ed759b8, 0x0, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7a5557f01bf0, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003742ade0 rbx 0 rdx 0 rcx 0xffff8000fffe8550 rax 0x2a r8 0xffff80003742ad10 r9 0x1 r10 0xbb40d9052df5c942 r11 0xa877f2dfcc9cf64d r12 0 r13 0 r14 0 r15 0 rip 0xffffffff81dcb4c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80003742ad60 ss 0x10 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=473331 pid=90303 tcnt=2 stat=onproc flags process=0 proc=0 runpri=83, usrpri=83, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000fffe9a10,0xffff8000fffe9258 process=0xffff8000fffedcf8 user=0xffff800037425000, vmspace=0xfffffd800ed75ba0 estcpu=33, cpticks=9, pctcpu=0.1, user=8, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 72858 209420 67726 0 2 0 syz-executor 76925 256620 10712 0 7 0 syz-executor 76925 17365 10712 0 3 0x4000000 sbar syz-executor 76925 345159 10712 0 3 0x4000080 fsleep syz-executor 76925 163644 10712 0 3 0x4000080 fsleep syz-executor 76925 371083 10712 0 3 0x4000080 fsleep syz-executor *90303 473331 71988 0 7 0 syz-executor 90303 165879 71988 0 3 0x4000000 netlock syz-executor 16417 243035 90124 0 2 0 syz-executor 16417 107989 90124 0 3 0x4000080 fsleep syz-executor 10712 6440 28981 0 2 0x3 syz-executor 7394 79626 87517 0 3 0x3000 suspend syz-executor 7394 472379 87517 0 2 0x4081000 syz-executor 35734 403012 28981 0 2 0x2 syz-executor 92139 323770 0 0 3 0x14200 bored sosplice 2670 130830 28981 0 3 0x3 inode syz-executor 90124 448621 28981 0 2 0x3 syz-executor 21560 106392 28981 0 3 0x3 inode syz-executor 71988 101708 28981 0 3 0x3 inode syz-executor 87517 157081 28981 0 3 0x82 wait syz-executor 67726 87975 28981 0 2 0x3 syz-executor 28981 177950 430 0 3 0x82 kqread syz-executor 430 294267 45199 0 3 0x10008a sigsusp ksh 45199 363898 54800 0 3 0x98 kqread sshd-session 54800 390970 11178 0 3 0x92 kqread sshd-session 72481 136930 1 0 3 0x100083 ttyopn getty 11178 350033 1 0 3 0x88 kqread sshd 46648 82071 25774 74 3 0x1100092 bpf pflogd 25774 515671 1 0 3 0x80 sbwait pflogd 1259 517705 64200 73 3 0x1100090 kqread syslogd 64200 439262 1 0 3 0x100082 sbwait syslogd 5324 240392 1 0 3 0x100080 kqread resolvd 35288 477008 15596 77 3 0x100092 kqread dhcpleased 71903 363896 15596 77 3 0x100092 kqread dhcpleased 15596 126296 1 0 3 0x80 kqread dhcpleased 31696 158791 0 0 3 0x14200 bored smr 51338 297281 0 0 2 0x14200 zerothread 97846 521049 0 0 3 0x14200 aiodoned aiodoned 4311 414655 0 0 3 0x14200 syncer update 25930 73920 0 0 3 0x14200 cleaner cleaner 41934 485586 0 0 3 0x14200 reaper reaper 6048 10828 0 0 3 0x14200 pgdaemon pagedaemon 57184 410441 0 0 3 0x14200 bored viomb 44513 144049 0 0 3 0x40014200 acpi0 acpi0 6547 5635 0 0 3 0x40014200 idle1 32673 440164 0 0 3 0x14200 bored softnet1 57561 468039 0 0 3 0x14200 netlock softnet0 77342 142051 0 0 2 0x40014200 systqmp 70640 27149 0 0 3 0x14200 bored systq 46973 115655 0 0 3 0x14200 tmoslp softclockmp 81649 288419 0 0 3 0x40014200 tmoslp softclock 54974 449230 0 0 3 0x40014200 idle0 1 281232 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 72858 (syz-executor) thread 0xffff8000fffe3780 (209420) exclusive rwlock vmmaplk r = 0 (0xfffffd800ed75318) #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_read+0x3e8 sys/kern/kern_rwlock.c:413 #2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1902 #3 uvm_fault_check+0x4f sys/uvm/uvm_fault.c:699 #4 uvm_fault+0x106 sys/uvm/uvm_fault.c:633 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 #7 recall_trap+0x8 Process 76925 (syz-executor) thread 0xffff8000fffe8fb0 (17365) exclusive rwlock dtlk r = 0 (0xffffffff83826258) #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 dt_ioctl_record_stop+0x2e sys/dev/dt/dt_dev.c:572 #3 dtioctl+0x536 sys/dev/dt/dt_dev.c:325 #4 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 #5 vn_ioctl+0xf8 sys/kern/vfs_vnops.c:531 #6 sys_ioctl+0x674 sys/kern/sys_generic.c:-1 #7 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #7 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 #8 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839bf220) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 vn_ioctl+0x4d sys/kern/vfs_vnops.c:514 #2 sys_ioctl+0x674 sys/kern/sys_generic.c:-1 #3 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #3 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 #4 Xsyscall+0x128 Process 16417 (syz-executor) thread 0xffff8000fffe8020 (243035) exclusive rwlock vmmaplk r = 0 (0xfffffd800ed758d0) #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 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5171 #3 uvm_map_protect+0xe0 sys/uvm/uvm_map.c:3064 #4 sys_mprotect+0x351 sys/uvm/uvm_mmap.c:590 #5 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 #6 Xsyscall+0x128 Process 35734 (syz-executor) thread 0xffff8000fffe82b8 (403012) exclusive rwlock vmmaplk r = 0 (0xfffffd806ef1f108) #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 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5171 #3 uvmspace_fork+0x12b sys/uvm/uvm_map.c:3741 #4 process_new+0x577 sys/kern/kern_fork.c:281 #5 fork1+0x3f6 sys/kern/kern_fork.c:-1 #6 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 #7 Xsyscall+0x128 exclusive rwlock vmmaplk r = 0 (0xfffffd806c183c90) #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 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5171 #3 uvmspace_fork+0x44 sys/uvm/uvm_map.c:3732 #4 process_new+0x577 sys/kern/kern_fork.c:281 #5 fork1+0x3f6 sys/kern/kern_fork.c:-1 #6 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 #7 Xsyscall+0x128 Process 90124 (syz-executor) thread 0xffff80002a290d10 (448621) exclusive rrwlock inode r = 0 (0xfffffd806e2f5cb0) #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+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2a2 sys/kern/vfs_subr.c:687 #6 ktrwriteraw+0x175 sys/kern/kern_ktrace.c:688 #7 ktrsyscall+0x340 ktrwrite sys/kern/kern_ktrace.c:-1 [inline] #7 ktrsyscall+0x340 sys/kern/kern_ktrace.c:183 #8 syscall+0x304 mi_syscall sys/sys/syscall_mi.h:154 [inline] #8 syscall+0x304 sys/arch/amd64/amd64/trap.c:748 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10246 11078K 11702K 166960K 13820 0 pcb 17 15K 16K 166960K 414 0 rtable 230 17K 18K 166960K 678 0 pf 39 18K 24K 166960K 324 0 ifaddr 41 7K 8K 166960K 117 0 ifgroup 59 2K 2K 166960K 190 0 sysctl 3 1K 9K 166960K 24 0 counters 70 37K 37K 166960K 206 0 ioctlops 0 0K 4K 166960K 1914 0 iov 0 0K 20K 166960K 222 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1543 97K 97K 166960K 3040 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 33 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 171 0 dirhash 12 2K 2K 166960K 45 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 89K 166960K 1895 0 sigio 0 0K 0K 166960K 44 0 proc 72 115K 164K 166960K 789 0 subproc 72 4K 4K 166960K 100 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 211 0 in_multi 81 6K 7K 166960K 185 0 ether_multi 1 0K 0K 166960K 19 0 mrt 3 0K 0K 166960K 20 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 247 1102K 1102K 166960K 247 0 exec 0 0K 1K 166960K 756 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 5 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 229 159K 174K 166960K 19370 0 UVM aobj 43 3K 3K 166960K 48 0 pinsyscall 41 82K 103K 166960K 3120 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 113 0 NDP 13 0K 2K 166960K 82 0 temp 84 8656K 8732K 166960K 81422 0 kqueue 13 20K 32K 166960K 348 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 120 240 0 237 3 2 1 3 0 8 0 rtentry 176 203 0 111 6 0 6 6 0 8 0 unpcb 144 1442 0 1425 18 17 1 6 0 8 0 syncache 336 7 0 7 1 1 0 1 0 8 0 tcpcb 736 725 0 721 15 11 4 7 0 8 3 arp 136 33 0 18 1 0 1 1 0 8 0 inpcb 328 2139 0 2131 17 13 4 7 0 8 3 nd6 152 46 0 21 2 0 2 2 0 8 0 pkpcb 40 16 0 16 5 5 0 1 0 8 0 kcovpl 48 11 0 3 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 54 0 54 2 2 0 1 0 8 0 pppxif 1504 6 0 6 2 2 0 1 0 8 0 pffrag 232 17 0 3 1 0 1 1 0 482 0 pffrnode 88 16 0 3 1 0 1 1 0 8 0 pffrent 40 61 0 47 1 0 1 1 0 8 0 pfosfp 40 1430 0 1006 5 0 5 5 0 8 0 pfosfpen 112 1430 0 715 21 0 21 21 0 8 0 pfrktable 1344 6 0 6 1 1 0 1 0 8 0 pfanchor 1288 3 0 2 1 0 1 1 0 8 0 pftag 88 3 0 0 1 0 1 1 0 8 0 pfqueue 320 2 0 2 1 1 0 1 0 8 0 pfstitem 24 189 0 82 1 0 1 1 0 8 0 pfstkey 128 191 0 84 4 0 4 4 0 8 0 pfstate 384 187 0 83 12 0 12 12 0 8 0 pfrule 1344 104 0 100 2 1 1 2 0 8 0 rttmr 136 4 0 4 1 1 0 1 0 8 0 art_heap8 4096 5 0 0 5 0 5 5 0 8 0 art_heap4 256 851 0 460 33 7 26 30 0 8 0 art_table 40 856 0 460 5 0 5 5 0 8 0 art_node 32 202 0 119 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 2 1 0 1 1 0 8 0 semupl 112 3 0 3 2 2 0 1 0 8 0 semapl 112 166 0 156 1 0 1 1 0 8 0 shmpl 112 45 0 5 2 0 2 2 0 8 0 dirhash 1024 41 0 24 3 0 3 3 0 8 0 dino2pl 256 4938 0 3429 96 0 96 96 0 8 0 ffsino 296 4938 0 3429 118 1 117 118 0 8 0 nchpl 144 7610 0 5903 64 0 64 64 0 8 0 rtmask 32 6 0 6 4 4 0 1 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 27528 0 27528 3 2 1 2 0 8 1 percpumem 16 118 0 68 1 0 1 1 0 8 0 pfiaddrpl 120 2 0 2 1 1 0 1 0 8 0 kstatmem 264 120 0 90 6 3 3 3 0 8 0 acpiwqpl 32 2 0 2 1 0 1 1 1 8 1 scsiplug 72 5 0 5 3 3 0 1 0 8 0 scxspl 216 66581 0 66581 12 11 1 8 1 8 1 plimitpl 152 500 0 482 1 0 1 1 0 8 0 sigapl 424 2209 0 2162 7 1 6 7 0 8 0 knotepl 120 803 0 0 24 0 24 24 0 8 0 kqueuepl 224 835 0 825 11 8 3 5 0 8 2 pipepl 344 347 0 319 4 0 4 4 0 8 1 fdescpl 528 2186 0 2156 3 0 3 3 0 8 0 filepl 160 15059 0 14838 30 18 12 17 0 8 0 lockfpl 104 595 0 593 1 0 1 1 0 8 0 lockfspl 48 250 0 248 1 0 1 1 0 8 0 sessionpl 144 29 0 20 1 0 1 1 0 8 0 pgrppl 48 67 0 50 1 0 1 1 0 8 0 ucredpl 104 2490 0 2477 1 0 1 1 0 8 0 zombiepl 144 2213 0 2212 1 0 1 1 0 8 0 processpl 1232 2209 0 2162 5 0 5 5 0 8 0 procpl 664 5288 0 5234 6 0 6 6 0 8 0 sosppl 168 11 0 11 5 4 1 1 0 8 1 sockpl 752 3915 0 3886 49 42 7 20 0 8 3 mcl64k 65536 20 0 0 3 0 3 3 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 133 0 0 17 0 17 17 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 31 0 0 4 0 4 4 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 1266 0 0 77 0 77 77 0 8 0 bufpl 280 28677 0 22539 439 0 439 439 0 8 0 anonpl 32 11601 0 0 94 0 94 94 0 246 0 amapchunkpl 152 67420 0 66984 51 26 25 33 0 158 3 amappl16 200 9385 0 9353 67 59 8 28 0 8 0 amappl15 192 3 0 3 1 1 0 1 0 8 0 amappl14 184 3 0 3 1 1 0 1 0 8 0 amappl13 176 466 0 465 1 0 1 1 0 8 0 amappl12 168 2573 0 2533 3 0 3 3 0 8 0 amappl11 160 20 0 20 1 1 0 1 0 8 0 amappl10 152 53 0 39 1 0 1 1 0 8 0 amappl9 144 298 0 298 2 2 0 1 0 8 0 amappl8 136 41 0 39 1 0 1 1 0 8 0 amappl7 128 93 0 91 1 0 1 1 0 8 0 amappl6 120 325 0 311 1 0 1 1 0 8 0 amappl5 112 99 0 88 1 0 1 1 0 8 0 amappl4 104 455 0 425 1 0 1 1 0 8 0 amappl3 96 11710 0 11628 4 1 3 3 0 8 0 amappl2 88 2328 0 2254 2 0 2 2 0 8 0 amappl1 80 17510 0 16921 15 1 14 14 0 8 0 amappl 88 18229 0 18078 5 0 5 5 0 92 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 dma32768 32768 3 0 3 2 2 0 1 0 8 0 dma8192 8192 33 0 33 1 1 0 1 0 8 0 dma4096 4096 2 0 2 2 2 0 1 0 8 0 dma2048 2048 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 72 0 72 3 3 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 8 0 8 3 3 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 47 0 5 1 0 1 1 0 8 0 uaddrrnd 24 2186 0 2156 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2186 0 2156 1 0 1 1 0 8 0 vmmpekpl 168 19176 0 19122 3 0 3 3 0 8 0 vmmpepl 168 145964 0 144137 128 31 97 108 0 357 4 vmsppl 488 2185 0 2156 7 2 5 5 0 8 0 rwobjpl 80 46892 0 40009 147 2 145 146 0 8 0 pdppl 4096 4380 0 4312 108 36 72 86 0 8 4 pvpl 32 19114 0 0 154 0 154 154 0 265 0 pmappl 256 2185 0 2156 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 381 0 67 10 0 10 10 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff837f9ff0) 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+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(ffffffff839bf018) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839bf018) at __mp_lock+0x1a3 sys/kern/kern_lock.c:165 softintr_dispatch(2) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsofttty() at Xsofttty+0x27 __mp_lock(ffffffff839bf018) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839bf018) at __mp_lock+0x192 sys/kern/kern_lock.c:165 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x705bb64ff310, count: 3 ddb{0}> trace x86_ipi_db(ffffffff837f9ff0) 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+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(ffffffff839bf018) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839bf018) at __mp_lock+0x1a3 sys/kern/kern_lock.c:165 softintr_dispatch(2) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsofttty() at Xsofttty+0x27 __mp_lock(ffffffff839bf018) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839bf018) at __mp_lock+0x192 sys/kern/kern_lock.c:165 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x705bb64ff310, count: -12 ddb{0}> machine ddbcpu 1 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x688 proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7a5557f01bf0, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7a5557f01bf0, count: -1