uvm_fault(0xfffffd806b7d8d78, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff82058078 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80003c53d0c0 gsbase 0xffff8000299edff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff82058078 Starting stack trace... panic(ffffffff833a55f3) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80003c53d010) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff800001576000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(21e5f,81,2000,ffff800039009ca8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,81,2000,ffff800039009ca8) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c53d1c0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805fcc4050,81,fffffd80097fb3a8,ffff800039009ca8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b944ea8,ffff800039009ca8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b944ea8,ffff800039009ca8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806b944ea8,ffff800039009ca8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806b944ea8,ffff800039009ca8) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff800039009ca8) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff800039009ca8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff800039009ca8,ffff80003c53d530,ffff80003c53d480) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c53d530) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c53d530) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75a0db68c040, count: 242 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 *346495 45932 0 0 0 1 syz-executor 327759 16389 0 0x14000 0x40000200 0 softclock proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7aa56d6c54b0, 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(0xfffffd806b7d8d78, 0x0, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7aa56d6c54b0, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff800034ffb7e0 rbx 0 rdx 0 rcx 0xffff8000ffff2d08 rax 0x2a r8 0xffff800034ffb710 r9 0x1 r10 0xe3b4ac678e2c35e4 r11 0x489c0fa9de105d24 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff829444c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff800034ffb760 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=346495 pid=45932 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=0xffff800039008550,0xffff8000390082c8 process=0xffff80003c4f2248 user=0xffff800034ff6000, vmspace=0xfffffd806ef6a008 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *45932 346495 89458 0 7 0 syz-executor 45932 39707 89458 0 3 0x4000080 fsleep syz-executor 73712 282880 7063 0 2 0 syz-executor 73712 389175 7063 0 3 0x4000080 pipewr syz-executor 73712 495502 7063 0 3 0x4000000 smrbar syz-executor 42067 180077 42959 0 2 0xc80 syz-executor 42067 169273 42959 0 3 0x4000080 ttyout syz-executor 42067 456984 42959 0 3 0x4000080 fsleep syz-executor 80062 466688 35729 0 2 0xc80 syz-executor 80062 248710 35729 0 3 0x4000080 kqsel syz-executor 80062 354040 35729 0 3 0x4000080 fsleep syz-executor 61731 56120 7342 0 2 0xc80 syz-executor 61731 299399 7342 0 3 0x4000080 sbwait syz-executor 61731 295447 7342 0 3 0x4000080 fsleep syz-executor 49408 212562 9966 60928 2 0xc90 syz-executor 49408 512946 9966 60928 3 0x4000090 kqsel syz-executor 49408 140892 9966 60928 3 0x4000090 fsleep syz-executor 68166 241078 1 0 3 0x100083 ttyin getty 18330 420549 0 0 3 0x14200 bored sosplice 44951 289929 0 0 3 0x14280 nfsidl nfsio 58841 230691 0 0 3 0x14280 nfsidl nfsio 86080 55755 0 0 3 0x14280 nfsidl nfsio 81674 159798 0 0 3 0x14280 nfsidl nfsio 60673 467252 0 0 3 0x14280 nfsidl nfsio 88075 333361 0 0 3 0x14280 nfsidl nfsio 77284 194489 0 0 3 0x14280 nfsidl nfsio 71070 432342 0 0 3 0x14280 nfsidl nfsio 81798 264668 0 0 3 0x14280 nfsidl nfsio 74025 172578 0 0 3 0x14280 nfsidl nfsio 5508 485795 0 0 3 0x14280 nfsidl nfsio 63033 73489 0 0 3 0x14280 nfsidl nfsio 73406 427191 0 0 3 0x14280 nfsidl nfsio 39708 138771 0 0 3 0x14280 nfsidl nfsio 14136 517530 0 0 3 0x14280 nfsidl nfsio 82499 376721 0 0 3 0x14280 nfsidl nfsio 98584 398967 0 0 3 0x14280 nfsidl nfsio 72419 482466 0 0 3 0x14280 nfsidl nfsio 68426 134353 0 0 3 0x14280 nfsidl nfsio 73884 260196 0 0 3 0x14280 nfsidl nfsio 38002 151686 78963 0 2 0x2 syz-executor 7063 140336 78963 0 2 0xc82 syz-executor 7342 127189 78963 0 2 0xc82 syz-executor 35729 520448 78963 0 2 0xc82 syz-executor 9966 510527 78963 0 2 0xc82 syz-executor 57066 431197 78963 0 2 0xc82 syz-executor 89458 362384 78963 0 2 0xc82 syz-executor 42959 405419 78963 0 2 0xc82 syz-executor 78963 264921 86 0 3 0x82 kqread syz-executor 86 57381 13650 0 3 0x10008a sigsusp ksh 13650 407210 2746 0 3 0x98 kqread sshd-session 2746 435965 56657 0 3 0x92 kqread sshd-session 56657 79991 1 0 3 0x88 kqread sshd 48530 260523 45516 74 3 0x1100092 bpf pflogd 45516 378305 1 0 3 0x80 sbwait pflogd 52788 354345 63521 73 2 0x1100090 syslogd 63521 473652 1 0 3 0x100082 sbwait syslogd 23579 319039 1 0 3 0x100080 kqread resolvd 59771 489488 16985 77 3 0x100092 kqread dhcpleased 56887 108226 16985 77 3 0x100092 kqread dhcpleased 16985 385912 1 0 3 0x80 kqread dhcpleased 93959 77102 0 0 2 0x14200 smr 71652 14403 0 0 2 0x14200 zerothread 71428 285616 0 0 3 0x14200 aiodoned aiodoned 41972 403571 0 0 3 0x14200 syncer update 45520 165127 0 0 3 0x14200 cleaner cleaner 89657 473394 0 0 3 0x14200 reaper reaper 51415 100038 0 0 3 0x14200 pgdaemon pagedaemon 25392 212767 0 0 3 0x14200 bored viomb 1110 90504 0 0 3 0x40014200 acpi0 acpi0 46947 407398 0 0 3 0x40014200 idle1 38590 369541 0 0 3 0x14200 bored softnet7 38362 282386 0 0 3 0x14200 bored softnet6 89559 354839 0 0 3 0x14200 bored softnet5 72035 211077 0 0 3 0x14200 bored softnet4 36902 254226 0 0 3 0x14200 bored softnet3 6551 178230 0 0 3 0x14200 bored softnet2 69191 204184 0 0 3 0x14200 bored softnet1 825 68868 0 0 2 0x14200 softnet0 12893 306769 0 0 2 0x14200 systqmp 24589 114995 0 0 3 0x14200 bored systq 78853 335087 0 0 2 0x14200 softclockmp 16389 327759 0 0 7 0x40014200 softclock 49102 397304 0 0 3 0x40014200 idle0 1 399907 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 73712 (syz-executor) thread 0xffff800039008550 (495502) exclusive rwlock clonelk r = 0 (0xffffffff83806788) #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 if_clone_destroy+0x67 sys/net/if.c:-1 #3 ifioctl+0x59d sys/net/if.c:2066 #4 sys_ioctl+0x674 sys/kern/sys_generic.c:-1 #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 61731 (syz-executor) thread 0xffff80003c507a28 (299399) exclusive rwlock sbufrcv r = 0 (0xffff800010fc7080) #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 sblock+0xb6 sys/kern/uipc_socket2.c:536 #3 soreceive+0x27d sys/kern/uipc_socket.c:870 #4 recvit+0x40b sys/kern/uipc_syscalls.c:1078 #5 sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:878 #6 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 #7 Xsyscall+0x128 Process 38002 (syz-executor) thread 0xffff8000ffff3238 (151686) exclusive rrwlock inode r = 0 (0xfffffd806e1be2f0) #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:693 #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+0x93a sys/kern/vfs_lookup.c:566 #11 namei+0x7ca sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1868 #13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806be7b450) #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 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1868 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10272 11170K 11792K 166960K 13293 0 pcb 19 14K 14K 166960K 269 0 rtable 189 10K 11K 166960K 433 0 pf 39 18K 67487K 166960K 183 0 ifaddr 41 7K 8K 166960K 119 0 ifgroup 59 2K 2K 166960K 200 0 sysctl 4 1K 9K 166960K 14 0 counters 70 37K 38K 166960K 242 0 ioctlops 0 0K 4K 166960K 1698 0 iov 1 16K 28K 166960K 154 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1437 90K 91K 166960K 2772 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 15 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 44 0 dirhash 12 2K 2K 166960K 33 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 244K 166960K 1458 0 sigio 0 0K 0K 166960K 91 0 proc 74 115K 164K 166960K 737 0 subproc 72 4K 4K 166960K 73 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 394 0 in_multi 80 5K 7K 166960K 151 0 ether_multi 1 0K 0K 166960K 15 0 mrt 2 0K 0K 166960K 15 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 235 1049K 1049K 166960K 235 0 exec 0 0K 1K 166960K 643 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 257 169K 186K 166960K 15084 0 UVM aobj 36 4K 4K 166960K 40 0 pinsyscall 42 84K 102K 166960K 2540 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 84 0 NDP 13 0K 2K 166960K 85 0 temp 79 8652K 8903K 166960K 47995 0 kqueue 14 22K 32K 166960K 290 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 120 208 0 205 3 2 1 2 0 8 0 rtentry 176 122 0 51 5 0 5 5 0 8 0 unpcb 144 1494 0 1470 13 7 6 6 0 8 4 syncache 336 9 0 9 3 2 1 1 0 8 1 tcpqe 32 2 0 2 1 1 0 1 0 8 0 tcpcb 736 482 0 472 13 6 7 7 0 8 6 arp 128 15 0 4 1 0 1 1 0 8 0 inpcb 328 1409 0 1392 17 9 8 8 0 8 6 nd6 144 19 0 5 1 0 1 1 0 8 0 pkpcb 40 18 0 18 3 2 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 74 0 74 1 0 1 1 0 8 1 pppxif 1504 5 0 5 2 2 0 1 0 8 0 pffrag 232 28 0 19 1 0 1 1 0 482 0 pffrnode 88 28 0 19 1 0 1 1 0 8 0 pffrent 40 50 0 41 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 1 1 0 1 1 0 8 0 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pftag 88 3 0 1 1 0 1 1 0 8 0 pfstitem 24 102 0 31 1 0 1 1 0 8 0 pfstkey 128 106 0 35 3 0 3 3 0 8 0 pfstate 384 104 0 33 8 0 8 8 0 8 0 pfrule 1344 47 0 41 2 1 1 2 0 8 0 rttmr 136 4 0 4 3 2 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 576 0 237 28 4 24 28 0 8 0 art_table 40 578 0 237 5 0 5 5 0 8 0 art_node 32 119 0 60 1 0 1 1 0 8 0 sysvmsgpl 40 12 0 9 1 0 1 1 0 8 0 semupl 112 3 0 3 3 3 0 1 0 8 0 semapl 112 39 0 29 1 0 1 1 0 8 0 shmpl 112 37 0 4 1 0 1 1 0 8 0 dirhash 1024 31 0 14 3 0 3 3 0 8 0 dino2pl 256 4352 0 2843 95 0 95 95 0 8 0 ffsino 296 4352 0 2843 117 0 117 117 0 8 0 nchpl 144 6402 0 4706 64 0 64 64 0 8 0 rtmask 32 13 0 13 4 4 0 1 0 8 0 uvmvnodes 80 5106 0 0 105 0 105 105 0 8 0 vnodes 216 5106 0 0 284 0 284 284 0 8 0 namei 1024 22301 0 22301 2 1 1 2 0 8 1 percpumem 16 136 0 86 1 0 1 1 0 8 0 kstatmem 264 142 0 112 5 2 3 3 0 8 0 scsiplug 72 8 0 8 2 2 0 1 0 8 0 scxspl 216 48119 0 48119 16 14 2 8 1 8 2 plimitpl 152 325 0 308 1 0 1 1 0 8 0 sigapl 424 1765 0 1691 9 0 9 9 0 8 0 knotepl 120 785 0 0 24 0 24 24 0 8 0 kqueuepl 224 679 0 665 6 5 1 5 0 8 0 pipepl 344 455 0 426 15 12 3 9 0 8 0 fdescpl 528 1720 0 1689 3 0 3 3 0 8 0 filepl 160 13086 0 12845 28 10 18 19 0 8 6 lockfpl 104 777 0 775 3 2 1 2 0 8 0 lockfspl 48 211 0 209 1 0 1 1 0 8 0 sessionpl 144 25 0 16 1 0 1 1 0 8 0 pgrppl 48 83 0 66 1 0 1 1 0 8 0 ucredpl 104 2150 0 2134 1 0 1 1 0 8 0 zombiepl 144 1692 0 1691 1 0 1 1 0 8 0 processpl 1248 1765 0 1691 6 0 6 6 0 8 0 procpl 664 4069 0 3984 9 1 8 9 0 8 0 sosppl 168 13 0 13 5 4 1 1 0 8 1 sockpl 752 3155 0 3111 35 23 12 18 0 8 7 mcl64k 65536 4 0 0 1 0 1 1 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 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 117 0 0 15 0 15 15 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 55 0 0 7 0 7 7 0 8 0 mtagpl 96 13 0 0 1 0 1 1 0 8 0 mbufpl 256 2276 0 0 141 0 141 141 0 8 0 bufpl 280 21251 0 15108 439 0 439 439 0 8 0 anonpl 32 14839 0 0 120 0 120 120 0 246 0 amapchunkpl 152 52721 0 52116 49 13 36 40 0 158 11 amappl16 200 7318 0 7245 47 27 20 29 0 8 8 amappl15 192 10 0 10 1 1 0 1 0 8 0 amappl14 184 134 0 122 1 0 1 1 0 8 0 amappl13 176 11 0 11 2 2 0 1 0 8 0 amappl12 168 2385 0 2353 3 0 3 3 0 8 0 amappl11 160 79 0 65 1 0 1 1 0 8 0 amappl10 152 6 0 6 2 1 1 1 0 8 1 amappl9 144 254 0 254 1 1 0 1 0 8 0 amappl8 136 29 0 26 1 0 1 1 0 8 0 amappl7 128 114 0 102 1 0 1 1 0 8 0 amappl6 120 180 0 177 1 0 1 1 0 8 0 amappl5 112 138 0 128 1 0 1 1 0 8 0 amappl4 104 308 0 287 1 0 1 1 0 8 0 amappl3 96 10216 0 10097 4 0 4 4 0 8 0 amappl2 88 669 0 604 2 0 2 2 0 8 0 amappl1 80 13995 0 13386 14 1 13 14 0 8 0 amappl 88 14123 0 13941 5 0 5 5 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 7 0 7 2 2 0 1 0 8 0 dma128 128 256 0 256 2 2 0 1 0 8 0 dma64 64 7 0 7 2 1 1 1 0 8 1 dma32 32 8 0 8 2 2 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 39 0 4 1 0 1 1 0 8 0 uaddrrnd 24 1720 0 1689 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1720 0 1689 1 0 1 1 0 8 0 vmmpekpl 168 15794 0 15754 3 0 3 3 0 8 0 vmmpepl 168 114472 0 112379 116 8 108 112 0 357 3 vmsppl 488 1719 0 1689 5 1 4 5 0 8 0 rwobjpl 80 37085 0 30940 128 2 126 126 0 8 0 pdppl 4096 3448 0 3378 108 36 72 86 0 8 2 pvpl 32 24105 0 0 195 0 195 195 0 265 0 pmappl 256 1719 0 1689 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 427 0 52 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff837c4ff0) 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:847 Xsoftclock() at Xsoftclock+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(ffffffff839714e0) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839714e0) at __mp_lock+0x1a3 sys/kern/kern_lock.c:165 __mp_acquire_count(ffffffff839714e0,1) 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(ffffffff837fbf78) at softclock_thread_run+0x79 sys/kern/kern_timeout.c:836 softclock_thread(ffff8000fffff758) at softclock_thread+0x10a sys/kern/kern_timeout.c:858 end trace frame: 0x0, count: 2 ddb{0}> trace x86_ipi_db(ffffffff837c4ff0) 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:847 Xsoftclock() at Xsoftclock+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(ffffffff839714e0) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839714e0) at __mp_lock+0x1a3 sys/kern/kern_lock.c:165 __mp_acquire_count(ffffffff839714e0,1) 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(ffffffff837fbf78) at softclock_thread_run+0x79 sys/kern/kern_timeout.c:836 softclock_thread(ffff8000fffff758) at softclock_thread+0x10a sys/kern/kern_timeout.c:858 end trace frame: 0x0, count: -13 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: 0x7aa56d6c54b0, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7aa56d6c54b0, count: -1