uvm_fault(0xfffffd805f8053f8, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff82a4e658 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80003c4c4680 gsbase 0xffffffff837d9ff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff82a4e658 Starting stack trace... panic(ffffffff833df3ed) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80003c4c45d0) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff80000149d000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(21e5f,81,2000,ffff80002a260fa8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,81,2000,ffff80002a260fa8) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c4c4780) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806720f7f0,81,fffffd80097fd750,ffff80002a260fa8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806c9d1a38,ffff80002a260fa8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806c9d1a38,ffff80002a260fa8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806c9d1a38,ffff80002a260fa8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806c9d1a38,ffff80002a260fa8) at closef+0x192 sys/kern/kern_descrip.c:1264 syscall(ffff80003c4c49e0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4c49e0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x949ca202c70, count: 245 End of stack trace. WARNING: SPL NOT LOWERED ON SYSCALL 49 0 EXIT 0 a Stopped at savectx+0xae: movl $0,%gs:0x688 TID PID UID PRFLAGS PFLAGS CPU COMMAND 2612 62380 0 0 0x4000000 0 syz-executor *260291 13418 0 0x10 0 1 syz-executor savectx() at savectx+0xae end of kernel end trace frame: 0x7f46dfb1da70, 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 *cpu0: uvm_fault(0xfffffd805f8053f8, 0x0, 0, 1) -> e ddb{1}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x7f46dfb1da70, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c4f8d10 rbx 0 rdx 0 rcx 0xffff8000347d2a88 rax 0x32 r8 0xffff80003c4f8c40 r9 0x2080713 __kernel_phys_base+0x1080713 r10 0xf534f7e395aedb9e r11 0x1be2f56d71dd2cf3 r12 0 r13 0 r14 0xffff8000347d2a88 r15 0 rip 0xffffffff8220b3ee savectx+0xae cs 0x8 rflags 0x46 rsp 0xffff80003c4f8c90 ss 0x10 savectx+0xae: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=260291 pid=13418 tcnt=4 stat=onproc flags process=10 proc=0 runpri=32, usrpri=84, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c484568,0xffff8000347d22d0 process=0xffff8000fffec4e8 user=0xffff80003c4f3000, vmspace=0xfffffd806c9599a8 estcpu=34, cpticks=21, pctcpu=0.21, user=21, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 71112 29638 90367 0 2 0 syz-executor 71112 181458 90367 0 2 0x4000000 syz-executor 71112 499761 90367 0 3 0x4000080 fsleep syz-executor 62380 117511 84930 0 2 0 syz-executor 62380 371005 84930 0 2 0x4000080 syz-executor 62380 2612 84930 0 7 0x4000000 syz-executor 62380 362888 84930 0 3 0x4000000 netlock syz-executor 33913 406412 70364 0 2 0 syz-executor 33913 359957 70364 0 3 0x4000080 fsleep syz-executor 33913 468535 70364 0 3 0x4000080 fsleep syz-executor 33913 482787 70364 0 3 0x4000080 fsleep syz-executor *13418 260291 50925 0 7 0x10 syz-executor 13418 41824 50925 0 3 0x4000090 bell syz-executor 13418 118582 50925 0 3 0x4000090 bell syz-executor 13418 411740 50925 0 2 0x4000010 syz-executor 90782 372654 5475 0 2 0xc80 syz-executor 90782 138296 5475 0 3 0x4000080 fsleep syz-executor 90782 421902 5475 0 2 0x4000000 syz-executor 90782 381097 5475 0 3 0x4000080 fsleep syz-executor 27336 321885 56374 0 2 0x3 syz-executor 13331 18781 1 0 3 0x100083 ttyopn getty 61036 233065 0 0 3 0x14200 acct acct 90367 499625 56374 0 2 0x3 syz-executor 21887 228736 56374 0 2 0xc82 syz-executor 50925 464916 56374 0 2 0x3 syz-executor 64752 494898 56374 0 2 0x3 syz-executor 84930 262520 56374 0 2 0x3 syz-executor 5475 380105 56374 0 2 0x3 syz-executor 70364 195493 56374 0 2 0x3 syz-executor 56374 520270 56929 0 3 0x82 kqread syz-executor 56929 109911 79543 0 3 0x10008a sigsusp ksh 79543 186716 62312 0 3 0x98 kqread sshd-session 62312 516317 5270 0 3 0x92 kqread sshd-session 5270 343822 1 0 3 0x88 kqread sshd 96019 168212 97668 74 3 0x1100092 bpf pflogd 97668 171726 1 0 3 0x80 sbwait pflogd 15246 506772 26951 73 3 0x1100090 kqread syslogd 26951 115887 1 0 3 0x100082 sbwait syslogd 544 39325 1 0 3 0x100080 kqread resolvd 88795 343392 57544 77 3 0x100092 kqread dhcpleased 11378 470290 57544 77 3 0x100092 kqread dhcpleased 57544 183273 1 0 3 0x80 kqread dhcpleased 5397 432752 0 0 3 0x14200 bored smr 95017 281917 0 0 2 0x14200 zerothread 55085 222922 0 0 3 0x14200 aiodoned aiodoned 18063 209972 0 0 3 0x14200 syncer update 82136 417805 0 0 3 0x14200 cleaner cleaner 74197 94463 0 0 2 0x14200 reaper 34557 311040 0 0 3 0x14200 pgdaemon pagedaemon 88135 514138 0 0 3 0x14200 bored viomb 37993 475970 0 0 3 0x40014200 acpi0 acpi0 41425 263062 0 0 3 0x40014200 idle1 65938 220713 0 0 3 0x14200 bored softnet1 19045 287302 0 0 2 0x14200 softnet0 52791 399639 0 0 3 0x14200 bored systqmp 59141 266234 0 0 3 0x14200 bored systq 73983 21357 0 0 3 0x14200 tmoslp softclockmp 45956 490492 0 0 3 0x40014200 tmoslp softclock 62302 199990 0 0 3 0x40014200 idle0 1 457346 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex &(curpg)->mdpage.pv_mtx r = 0 (0xfffffd800857e4d8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #3 pmap_remove_ptes+0x29f pmap_remove_pv sys/arch/amd64/amd64/pmap.c:-1 [inline] #3 pmap_remove_ptes+0x29f sys/arch/amd64/amd64/pmap.c:1711 #4 pmap_do_remove+0x589 sys/arch/amd64/amd64/pmap.c:1920 #5 uvm_unmap_kill_entry_withlock+0x269 sys/uvm/uvm_map.c:1863 #6 uvm_map_teardown+0x117 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:-1 [inline] #6 uvm_map_teardown+0x117 sys/uvm/uvm_map.c:2486 #7 exit1+0x6fc sys/kern/kern_exit.c:260 #8 sys_exit+0x1a sys/kern/kern_exit.c:-1 #9 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #9 syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 #10 Xsyscall+0x128 exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806c921b10) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #3 pmap_do_remove+0xa9 rcr3 sys/arch/amd64/compile/SYZKALLER/obj/machine/cpufunc.h:139 [inline] #3 pmap_do_remove+0xa9 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:437 [inline] #3 pmap_do_remove+0xa9 sys/arch/amd64/amd64/pmap.c:1824 #4 uvm_unmap_kill_entry_withlock+0x269 sys/uvm/uvm_map.c:1863 #5 uvm_map_teardown+0x117 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:-1 [inline] #5 uvm_map_teardown+0x117 sys/uvm/uvm_map.c:2486 #6 exit1+0x6fc sys/kern/kern_exit.c:260 #7 sys_exit+0x1a sys/kern/kern_exit.c:-1 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 #9 Xsyscall+0x128 Process 62380 (syz-executor) thread 0xffff80002a260fa8 (362888) exclusive rwlock dtlk r = 0 (0xffffffff8387f718) #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 dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] #3 dtclose+0x109 sys/dev/dt/dt_dev.c:239 #4 spec_close+0x466 sys/kern/spec_vnops.c:-1 #5 VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 #6 vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] #6 vn_closefile+0x12b sys/kern/vfs_vnops.c:615 #7 fdrop+0x121 sys/kern/kern_descrip.c:1280 #8 closef+0x192 sys/kern/kern_descrip.c:1264 #9 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #9 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #10 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff838b8730) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 vn_closefile+0x41 sys/kern/vfs_vnops.c:608 #2 fdrop+0x121 sys/kern/kern_descrip.c:1280 #3 closef+0x192 sys/kern/kern_descrip.c:1264 #4 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #4 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #5 Xsyscall+0x128 Process 90782 (syz-executor) thread 0xffff80003c485260 (421902) exclusive rwlock inet46 r = 0 (0xffff8000015d0718) #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 socreate+0x214 pru_attach sys/sys/protosw.h:-1 [inline] #2 socreate+0x214 sys/kern/uipc_socket.c:220 #3 sys_socket+0x124 sys/kern/uipc_syscalls.c:102 #4 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #4 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #5 Xsyscall+0x128 shared rwlock netlock r = 0 (0xffffffff838301e0) #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 solock_shared+0x6e sys/kern/uipc_socket2.c:343 #3 socreate+0x214 pru_attach sys/sys/protosw.h:-1 [inline] #3 socreate+0x214 sys/kern/uipc_socket.c:220 #4 sys_socket+0x124 sys/kern/uipc_syscalls.c:102 #5 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #6 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10248 11087K 11679K 166960K 12968 0 pcb 17 18K 33K 166960K 483 0 rtable 228 12K 13K 166960K 610 0 pf 41 19K 82K 166960K 225 0 ifaddr 39 7K 9K 166960K 139 0 ifgroup 63 2K 3K 166960K 251 0 sysctl 4 1K 9K 166960K 22 0 counters 72 37K 38K 166960K 278 0 ioctlops 0 0K 4K 166960K 1911 0 iov 0 0K 36K 166960K 237 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1432 90K 90K 166960K 2743 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 2K 10K 166960K 33 0 VM map 2 1K 1K 166960K 2 0 sem 25 137K 137K 166960K 61 0 dirhash 12 2K 2K 166960K 36 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 236K 166960K 1991 0 sigio 0 0K 0K 166960K 44 0 proc 72 115K 164K 166960K 813 0 subproc 72 4K 4K 166960K 90 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 226 0 in_multi 77 5K 7K 166960K 201 0 ether_multi 1 0K 0K 166960K 24 0 mrt 1 0K 0K 166960K 15 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 796 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 252 167K 195K 166960K 20189 0 UVM aobj 68 12K 12K 166960K 71 0 pinsyscall 41 82K 107K 166960K 3248 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 2 0K 0K 166960K 123 0 NDP 13 0K 2K 166960K 103 0 temp 79 8676K 9192K 166960K 103744 0 kqueue 13 20K 32K 166960K 381 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 120 166 0 163 1 0 1 1 0 8 0 rtentry 176 172 0 85 6 0 6 6 0 8 0 unpcb 144 1326 0 1305 8 4 4 4 0 8 3 syncache 336 20 0 20 3 2 1 1 0 8 1 tcpqe 32 6 0 6 4 3 1 1 0 8 1 tcpcb 736 574 0 564 11 9 2 7 0 8 1 arp 136 26 0 10 1 0 1 1 0 8 0 ipq 40 1 0 1 1 0 1 1 0 8 1 ipqe 40 3 0 3 1 0 1 1 0 8 1 inpcb 328 2185 0 2131 27 20 7 15 0 8 2 nd6 152 41 0 19 2 0 2 2 0 8 0 pkpcb 40 9 0 9 3 3 0 1 0 8 0 kcovpl 48 10 0 2 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 86 0 86 1 0 1 1 0 8 1 pppxif 1504 7 0 7 3 3 0 1 0 8 0 pfstscr 40 3 0 3 1 1 0 1 0 8 0 pffrag 232 25 0 10 2 0 2 2 0 482 0 pffrnode 88 22 0 9 1 0 1 1 0 8 0 pffrent 40 51 0 36 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 2 0 2 1 1 0 1 0 8 0 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 113 0 51 1 0 1 1 0 8 0 pfstkey 128 116 0 54 3 0 3 3 0 8 0 pfstate 448 115 0 53 8 0 8 8 0 8 0 pfrule 1344 30 0 24 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 693 0 352 29 3 26 29 0 8 0 art_table 40 697 0 352 5 0 5 5 0 8 0 art_node 32 172 0 96 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 8 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 54 0 31 1 0 1 1 0 8 0 shmpl 112 65 0 2 2 0 2 2 0 8 0 dirhash 1024 33 0 16 3 0 3 3 0 8 0 dino2pl 256 5088 0 3578 96 0 96 96 0 8 0 ffsino 296 5088 0 3578 118 1 117 118 0 8 0 nchpl 144 7898 0 6183 64 0 64 64 0 8 0 rtmask 32 15 0 15 4 4 0 1 0 8 0 vnodes 216 5827 0 0 324 0 324 324 0 8 0 namei 1024 28606 0 28605 4 3 1 2 0 8 0 percpumem 16 154 0 103 1 0 1 1 0 8 0 vcpupl 3968 2 0 0 1 0 1 1 0 8 0 vmpool 840 3 0 1 2 1 1 1 0 8 0 kstatmem 264 168 0 138 5 2 3 3 0 8 0 scsiplug 72 12 0 12 5 4 1 1 0 8 1 scxspl 216 38592 0 38592 11 10 1 8 1 8 1 plimitpl 152 339 0 320 1 0 1 1 0 8 0 sigapl 424 2326 0 2278 8 1 7 8 0 8 0 knotepl 120 805 0 0 25 0 25 25 0 8 0 kqueuepl 224 902 0 892 12 11 1 5 0 8 0 pipepl 344 358 0 330 4 1 3 4 0 8 0 fdescpl 528 2280 0 2250 3 0 3 3 0 8 0 filepl 160 16043 0 15766 30 15 15 22 0 8 3 lockfpl 104 863 0 860 1 0 1 1 0 8 0 lockfspl 48 261 0 258 1 0 1 1 0 8 0 sessionpl 144 45 0 36 1 0 1 1 0 8 0 pgrppl 48 85 0 68 1 0 1 1 0 8 0 ucredpl 104 2411 0 2397 1 0 1 1 0 8 0 zombiepl 144 2447 0 2445 1 0 1 1 0 8 0 processpl 1232 2326 0 2278 6 1 5 6 0 8 0 procpl 664 5458 0 5396 8 2 6 8 0 8 0 sosppl 176 8 0 8 3 3 0 1 0 8 0 sockpl 752 3810 0 3732 37 26 11 21 0 8 3 mcl64k 65536 45 0 0 6 0 6 6 0 8 0 mcl16k 16384 5 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 122 0 0 16 0 16 16 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 72 0 0 6 0 6 6 0 8 0 mtagpl 96 9 0 0 1 0 1 1 0 8 0 mbufpl 256 1218 0 0 76 0 76 76 0 8 0 bufpl 280 14792 0 8656 439 0 439 439 0 8 0 anonpl 32 13088 0 0 106 0 106 106 0 246 0 amapchunkpl 152 81303 0 80782 57 30 27 37 0 158 5 amappl16 200 6110 0 6073 25 17 8 19 0 8 0 amappl15 192 8 0 7 1 0 1 1 0 8 0 amappl14 184 7 0 7 3 3 0 1 0 8 0 amappl13 176 446 0 445 1 0 1 1 0 8 0 amappl12 168 2714 0 2673 3 0 3 3 0 8 0 amappl11 160 4 0 4 1 1 0 1 0 8 0 amappl10 152 53 0 39 1 0 1 1 0 8 0 amappl9 144 250 0 249 2 1 1 1 0 8 0 amappl8 136 29 0 26 1 0 1 1 0 8 0 amappl7 128 122 0 120 1 0 1 1 0 8 0 amappl6 120 330 0 316 1 0 1 1 0 8 0 amappl5 112 95 0 82 1 0 1 1 0 8 0 amappl4 104 522 0 490 1 0 1 1 0 8 0 amappl3 96 12004 0 11911 4 1 3 3 0 8 0 amappl2 88 2548 0 2470 3 1 2 3 0 8 0 amappl1 80 21667 0 21078 16 2 14 16 0 8 0 amappl 88 18993 0 18819 5 0 5 5 0 92 0 uvmvnodes 80 172 0 0 4 0 4 4 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 7 0 7 2 2 0 1 0 8 0 dma128 128 255 0 255 3 3 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 70 0 3 2 0 2 2 0 8 0 uaddrrnd 24 2280 0 2250 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2280 0 2250 1 0 1 1 0 8 0 vmmpekpl 168 20316 0 20262 3 0 3 3 0 8 0 vmmpepl 168 153396 0 151482 113 19 94 104 0 357 0 vmsppl 488 2279 0 2249 6 1 5 5 0 8 0 rwobjpl 80 41710 0 40511 34 3 31 32 0 8 0 pdppl 4096 4574 0 4502 125 49 76 84 0 8 4 pvpl 32 22448 0 0 182 1 181 181 0 265 0 pmappl 256 2282 0 2250 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 398 0 71 10 0 10 10 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff837d9ff0) 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 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff838b8528) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838b8528) at __mp_lock+0x192 sys/kern/kern_lock.c:165 syscall(ffff80003c415db0) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff80003c415db0) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x94a25e62ed0, count: 5 ddb{0}> trace x86_ipi_db(ffffffff837d9ff0) 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 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff838b8528) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838b8528) at __mp_lock+0x192 sys/kern/kern_lock.c:165 syscall(ffff80003c415db0) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff80003c415db0) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x94a25e62ed0, count: -10 ddb{0}> machine ddbcpu 1 Stopped at savectx+0xae: movl $0,%gs:0x688 savectx() at savectx+0xae end of kernel end trace frame: 0x7f46dfb1da70, count: 14 ddb{1}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x7f46dfb1da70, count: -1