uvm_fault(0xfffffd806b9293f0, 0x48, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff818f8315 cs 8 rflags 10246 cr2 48 cpl 0 rsp ffff80002a373460 gsbase 0xffff8000299edff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff818f8315 Starting stack trace... panic(ffffffff833a3685) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80002a3733b0) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b witness_checkorder(28,9,0) at witness_checkorder+0xb5 sys/kern/subr_witness.c:779 mtx_enter(18) at mtx_enter+0x4a sys/kern/kern_lock.c:260 clockintr_unbind(ffff80000151e630,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800001620000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:582 dtclose(11e5f,1,2000,ffff80003c434fb8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff80003c434fb8) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a3736a0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805e187eb8,1,fffffd80097fb4e0,ffff80003c434fb8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b855ae8,ffff80003c434fb8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b855ae8,ffff80003c434fb8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806b855ae8,ffff80003c434fb8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806b855ae8,ffff80003c434fb8) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c434fb8) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003c434fb8,b,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c434fb8,ffff80002a373a10,ffff80002a373960) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a373a10) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a373a10) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7cebde086710, count: 239 End of stack trace. WARNING: SPL NOT LOWERED ON SYSCALL 91 -569872936 EXIT 0 4 Stopped at savectx+0xae: movl $0,%gs:0x688 TID PID UID PRFLAGS PFLAGS CPU COMMAND *224229 78424 0 0x2 0 1 syz-executor 253390 33340 0 0x14000 0x40000200 0 softclock savectx() at savectx+0xae end of kernel end trace frame: 0x7cebde086dc0, 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(0xfffffd806b9293f0, 0x48, 0, 1) -> e ddb{1}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x7cebde086dc0, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002a3d75a0 rbx 0 rdx 0 rcx 0xffff8000ffff27d8 rax 0x3b r8 0xffff80002a3d74d0 r9 0x1 r10 0x81989d4fda077fc r11 0xa67093166b3849ff r12 0 r13 0 r14 0xffff8000ffff27d8 r15 0 rip 0xffffffff820ef3ee savectx+0xae cs 0x8 rflags 0x46 rsp 0xffff80002a3d7520 ss 0x10 savectx+0xae: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=224229 pid=78424 tcnt=1 stat=onproc flags process=2 proc=0 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a2b9770,0xffff80003c435790 process=0xffff8000ffff74f8 user=0xffff80002a3d2000, vmspace=0xfffffd806ef73008 estcpu=36, cpticks=363, pctcpu=0.44, user=7, sys=244, intr=111 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 66469 4799 43009 0 2 0 syz-executor 13496 423688 11921 0 2 0xc80 syz-executor 13496 478561 11921 0 3 0x4000080 kqread syz-executor 59981 260049 68125 0 3 0x3000 suspend syz-executor 59981 39523 68125 0 2 0x4081000 syz-executor 89913 398789 36788 0 2 0xc80 syz-executor 89913 290851 36788 0 3 0x4000080 netcon syz-executor 49823 405183 67012 0 2 0 syz-executor 49823 514633 67012 0 2 0x4000000 syz-executor 49823 412220 67012 0 3 0x4000080 fsleep syz-executor 52051 374289 88541 0 3 0x3000 suspend syz-executor 52051 400441 88541 0 2 0x4081000 syz-executor 52051 312555 88541 0 3 0x4081000 inode syz-executor 52051 139377 88541 0 3 0x4081000 inode syz-executor 64375 144151 1 0 2 0x100083 getty 94805 379995 0 0 3 0x14200 acct acct 36788 9301 61177 0 2 0xc82 syz-executor 43009 46571 61177 0 2 0xc82 syz-executor 88541 395142 61177 0 2 0xc82 syz-executor 84377 141281 61177 0 2 0x2 syz-executor 48554 396204 0 0 3 0x14200 bored sosplice *78424 224229 61177 0 7 0x2 syz-executor 68125 71141 61177 0 2 0xc82 syz-executor 11921 523442 61177 0 2 0xc82 syz-executor 67012 457941 61177 0 2 0xc82 syz-executor 61177 460935 24354 0 3 0x82 kqread syz-executor 24354 371990 41586 0 3 0x10008a sigsusp ksh 41586 393938 76200 0 3 0x98 kqread sshd-session 76200 272813 52472 0 3 0x92 kqread sshd-session 52472 154110 1 0 3 0x88 kqread sshd 19808 272245 92246 74 3 0x1100092 bpf pflogd 92246 499825 1 0 3 0x80 sbwait pflogd 22270 74644 93455 73 3 0x1100090 kqread syslogd 93455 472675 1 0 3 0x100082 sbwait syslogd 57884 149708 1 0 3 0x100080 kqread resolvd 17629 312338 49069 77 3 0x100092 kqread dhcpleased 59474 384870 49069 77 3 0x100092 kqread dhcpleased 49069 11752 1 0 3 0x80 kqread dhcpleased 84217 234027 0 0 2 0x14200 smr 73936 104490 0 0 3 0x14200 pgzero zerothread 34050 87639 0 0 3 0x14200 aiodoned aiodoned 51022 27033 0 0 3 0x14200 syncer update 48685 29492 0 0 3 0x14200 cleaner cleaner 51110 378871 0 0 2 0x14200 reaper 12727 312886 0 0 3 0x14200 pgdaemon pagedaemon 98061 60388 0 0 3 0x14200 bored viomb 68282 244506 0 0 3 0x40014200 acpi0 acpi0 89649 130088 0 0 3 0x40014200 idle1 94678 156470 0 0 3 0x14200 bored softnet7 61709 344708 0 0 3 0x14200 bored softnet6 18874 55279 0 0 3 0x14200 bored softnet5 3045 48995 0 0 3 0x14200 bored softnet4 64268 482549 0 0 3 0x14200 bored softnet3 82314 261850 0 0 3 0x14200 bored softnet2 19447 523353 0 0 3 0x14200 bored softnet1 81372 79351 0 0 2 0x14200 softnet0 73313 93562 0 0 3 0x14200 smrbar systqmp 2018 238744 0 0 3 0x14200 bored systq 95270 134991 0 0 3 0x14200 netlock softclockmp 33340 253390 0 0 7 0x40014200 softclock 338 14165 0 0 3 0x40014200 idle0 1 70608 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 59981 (syz-executor) thread 0xffff80003c4354e8 (39523) exclusive rrwlock inode r = 0 (0xfffffd806ea1d810) #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 vn_write+0x18f sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x242 sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 #9 Xsyscall+0x128 Process 49823 (syz-executor) thread 0xffff80003c434d20 (514633) exclusive rrwlock inode r = 0 (0xfffffd8064d20c78) #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 vn_write+0x18f sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x242 sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 #9 Xsyscall+0x128 Process 52051 (syz-executor) thread 0xffff800034408550 (400441) exclusive rrwlock inode r = 0 (0xfffffd8064d20da0) #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 vn_write+0x18f sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x242 sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 #9 Xsyscall+0x128 Process 52051 (syz-executor) thread 0xffff8000344094e0 (312555) exclusive rrwlock inode r = 0 (0xfffffd8064d20588) #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 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 vn_open+0x15a sys/kern/vfs_vnops.c:140 #8 sys_acct+0xb9 sys/kern/kern_acct.c:121 #9 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #9 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 #10 Xsyscall+0x128 Process 84377 (syz-executor) thread 0xffff800034409248 (141281) exclusive rwlock vmmaplk r = 0 (0xfffffd805f3994f8) #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:5168 #3 uvmspace_fork+0x44 sys/uvm/uvm_map.c:3729 #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 51110 (reaper) thread 0xffff8000ffffc7d0 (378871) exclusive rwlock kmmaplk r = 0 (0xffffffff8390d4f0) #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:5168 #3 uvm_unmap+0x7d sys/uvm/uvm_map.c:1792 #4 km_free+0x87 sys/uvm/uvm_km.c:831 #5 uvm_uarea_free+0x4f sys/uvm/uvm_glue.c:304 #6 reaper+0x1aa sys/kern/kern_exit.c:493 #7 proc_trampoline+0x10 Process 73313 (systqmp) thread 0xffff8000ffffea60 (93562) shared rwlock systqmp r = 0 (0xffffffff837c2268) #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 10272 11112K 12436K 166960K 13727 0 pcb 17 16K 24K 166960K 927 0 rtable 199 14K 16K 166960K 881 0 pf 39 18K 131090K 166960K 441 0 ifaddr 39 8K 10K 166960K 269 0 ifgroup 68 2K 3K 166960K 558 0 sysctl 4 1K 9K 166960K 36 0 counters 72 37K 38K 166960K 750 0 ioctlops 0 0K 4K 166960K 2452 0 iov 0 0K 28K 166960K 341 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1478 93K 94K 166960K 4487 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 9K 17K 166960K 59 0 VM map 2 1K 1K 166960K 2 0 sem 21 16K 32K 166960K 161 0 dirhash 12 2K 2K 166960K 84 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 240K 166960K 4026 0 sigio 0 0K 0K 166960K 229 0 proc 73 115K 163K 166960K 1138 0 subproc 72 4K 4K 166960K 117 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 558 0 in_multi 62 4K 7K 166960K 326 0 ether_multi 1 0K 0K 166960K 49 0 mrt 2 0K 0K 166960K 40 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 1318 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 3 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 254 173K 195K 166960K 38539 0 UVM aobj 109 5K 5K 166960K 112 0 pinsyscall 43 86K 104K 166960K 5288 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 0K 166960K 280 0 NDP 14 0K 1K 166960K 205 0 temp 84 8652K 8908K 166960K 201075 0 kqueue 14 22K 36K 166960K 886 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 120 350 0 347 1 0 1 1 0 8 0 rtentry 176 249 0 188 5 1 4 5 0 8 0 unpcb 144 3017 0 2995 23 22 1 6 0 8 0 syncache 336 29 0 29 9 8 1 1 0 8 1 tcpqe 32 8 0 8 3 3 0 1 0 8 0 tcpcb 736 1597 0 1589 31 24 7 7 0 8 6 arp 128 27 0 18 1 0 1 1 0 8 0 inpcb 328 4759 0 4747 41 34 7 12 0 8 5 nd6 144 42 0 32 1 0 1 1 0 8 0 pkpcb 40 24 0 24 9 8 1 1 0 8 1 kcovpl 48 13 0 5 1 0 1 1 0 8 0 mppekey 1024 2 0 2 2 1 1 1 0 8 1 ppxss 1192 278 0 278 3 2 1 1 0 8 1 pppxif 1504 21 0 21 6 5 1 1 0 8 1 pffrag 232 40 0 31 1 0 1 1 0 482 0 pffrnode 88 36 0 27 1 0 1 1 0 8 0 pffrent 40 67 0 58 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 3 0 3 2 2 0 1 0 8 0 pfstitem 24 327 0 181 1 0 1 1 0 8 0 pfstkey 128 327 0 181 5 0 5 5 0 8 0 pfstate 384 327 0 181 16 0 16 16 0 8 0 pfrule 1344 22 0 17 2 1 1 2 0 8 0 rttmr 136 11 0 11 4 4 0 1 0 8 0 art_heap8 4096 5 0 0 5 0 5 5 0 8 0 art_heap4 256 1188 0 883 39 16 23 32 0 8 1 art_table 40 1193 0 883 6 1 5 6 0 8 0 art_node 32 244 0 185 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 9 1 0 1 1 0 8 0 semupl 112 5 0 5 3 2 1 1 0 8 1 semapl 112 149 0 130 1 0 1 1 0 8 0 shmpl 112 109 0 3 4 0 4 4 0 8 0 dirhash 1024 65 0 48 3 0 3 3 0 8 0 dino2pl 256 9413 0 7898 96 0 96 96 0 8 0 ffsino 296 9413 0 7898 118 0 118 118 0 8 0 nchpl 144 15114 0 14490 63 39 24 63 0 8 0 rtmask 32 43 0 43 8 7 1 1 0 8 1 uvmvnodes 80 4886 0 0 100 0 100 100 0 8 0 vnodes 216 4886 0 0 272 0 272 272 0 8 0 namei 1024 53938 0 53937 5 4 1 3 0 8 0 percpumem 16 390 0 339 1 0 1 1 0 8 0 kstatmem 264 366 0 330 7 4 3 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 13 0 13 8 7 1 1 0 8 1 scxspl 216 90808 0 90808 18 17 1 8 1 8 1 plimitpl 152 888 0 868 1 0 1 1 0 8 0 sigapl 424 4303 0 4247 7 0 7 7 0 8 0 knotepl 120 853 0 0 24 0 24 24 0 8 0 kqueuepl 224 1661 0 1651 13 12 1 5 0 8 0 pipepl 344 905 0 877 24 17 7 9 0 8 4 fdescpl 528 4260 0 4228 3 0 3 3 0 8 0 filepl 160 30990 0 30760 44 30 14 21 0 8 1 lockfpl 104 1591 0 1586 2 0 2 2 0 8 1 lockfspl 48 557 0 552 1 0 1 1 0 8 0 sessionpl 144 50 0 41 1 0 1 1 0 8 0 pgrppl 48 212 0 195 1 0 1 1 0 8 0 ucredpl 104 5587 0 5573 1 0 1 1 0 8 0 zombiepl 144 5896 0 5893 1 0 1 1 0 8 0 processpl 1232 4303 0 4247 5 0 5 5 0 8 0 procpl 664 11306 0 11240 7 0 7 7 0 8 0 sosppl 168 29 0 29 8 7 1 1 0 8 1 sockpl 752 8360 0 8323 81 70 11 18 0 8 6 mcl64k 65536 18 0 0 3 0 3 3 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 115 0 0 15 0 15 15 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 54 0 0 6 0 6 6 0 8 0 mtagpl 96 5 0 0 1 0 1 1 0 8 0 mbufpl 256 1246 0 0 72 0 72 72 0 8 0 bufpl 280 37074 0 30929 440 0 440 440 0 8 0 anonpl 32 13129 0 0 105 0 105 105 0 246 0 amapchunkpl 152 136804 0 136252 83 52 31 39 0 158 5 amappl16 200 13920 0 13698 113 85 28 28 0 8 1 amappl15 192 8 0 8 2 2 0 1 0 8 0 amappl14 184 168 0 156 1 0 1 1 0 8 0 amappl13 176 73 0 73 1 1 0 1 0 8 0 amappl12 168 5000 0 4969 4 2 2 3 0 8 0 amappl11 160 63 0 48 1 0 1 1 0 8 0 amappl10 152 6 0 5 1 0 1 1 0 8 0 amappl9 144 256 0 255 2 1 1 1 0 8 0 amappl8 136 41 0 38 1 0 1 1 0 8 0 amappl7 128 142 0 129 1 0 1 1 0 8 0 amappl6 120 244 0 240 1 0 1 1 0 8 0 amappl5 112 171 0 161 1 0 1 1 0 8 0 amappl4 104 387 0 367 1 0 1 1 0 8 0 amappl3 96 28110 0 27992 5 1 4 5 0 8 0 amappl2 88 897 0 833 2 0 2 2 0 8 0 amappl1 80 29336 0 28733 16 1 15 16 0 8 0 amappl 88 36935 0 36755 5 0 5 5 0 92 0 dma32768 32768 2 0 2 2 1 1 1 0 8 1 dma8192 8192 2 0 2 2 2 0 2 0 8 0 dma4096 4096 2 0 2 2 2 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 128 260 0 260 6 5 1 1 0 8 1 dma64 64 8 0 8 3 3 0 1 0 8 0 dma32 32 8 0 8 2 2 0 1 0 8 0 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 111 0 3 2 0 2 2 0 8 0 uaddrrnd 24 4259 0 4228 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4259 0 4228 1 0 1 1 0 8 0 vmmpekpl 168 34538 0 34477 5 1 4 4 0 8 0 vmmpepl 168 276059 0 273827 158 44 114 114 0 357 1 vmsppl 488 4259 0 4228 6 1 5 5 0 8 0 rwobjpl 80 76432 0 70284 147 14 133 133 0 8 0 pdppl 4096 8526 0 8456 142 70 72 88 0 8 2 pvpl 32 21959 0 0 177 2 175 176 0 265 0 pmappl 256 4259 0 4228 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 441 0 129 10 0 10 10 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83787ff0) 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+0xf kd_curproc sys/dev/kcov.c:580 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xf sys/dev/kcov.c:153 __mp_acquire_count(ffffffff839a0500,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2d8 sys/kern/kern_synch.c:367 softclock_thread_run(ffffffff83866bd8) at softclock_thread_run+0x79 sys/kern/kern_timeout.c:836 softclock_thread(ffff8000fffff4c0) at softclock_thread+0x10a sys/kern/kern_timeout.c:858 end trace frame: 0x0, count: 7 ddb{0}> trace x86_ipi_db(ffffffff83787ff0) 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+0xf kd_curproc sys/dev/kcov.c:580 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xf sys/dev/kcov.c:153 __mp_acquire_count(ffffffff839a0500,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2d8 sys/kern/kern_synch.c:367 softclock_thread_run(ffffffff83866bd8) at softclock_thread_run+0x79 sys/kern/kern_timeout.c:836 softclock_thread(ffff8000fffff4c0) at softclock_thread+0x10a sys/kern/kern_timeout.c:858 end trace frame: 0x0, count: -8 ddb{0}> machine ddbcpu 1 Stopped at savectx+0xae: movl $0,%gs:0x688 savectx() at savectx+0xae end of kernel end trace frame: 0x7cebde086dc0, count: 14 ddb{1}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x7cebde086dc0, count: -1