uvm_fault(0xfffffd806d10c970, 0x2643d6318, 0, 1) -> e kernel: page fault trap, code=0 Stopped at refcnt_rele+0x158: movq 0(%rax,%r12,8),%r12 TID PID UID PRFLAGS PFLAGS CPU COMMAND *202506 94913 0 0x2 0 1 syz-executor 514880 90773 0 0x2 0 0 syz-executor refcnt_rele(fffffd807f7d3068) at refcnt_rele+0x158 sys/kern/kern_synch.c:973 crfree(fffffd807f7d3068) at crfree+0x35 sys/kern/kern_prot.c:971 process_zap(ffff8000fffe1308) at process_zap+0x2aa proc_free sys/kern/kern_exit.c:434 [inline] process_zap(ffff8000fffe1308) at process_zap+0x2aa sys/kern/kern_exit.c:875 dowait6(ffff80002a2bb4a0,0,0,ffff8000333eebdc,25,0,5a9748a36d66251,ffff8000333eed10) at dowait6+0xb30 sys/kern/kern_exit.c:553 sys_wait4(ffff80002a2bb4a0,ffff8000333eed10,ffff8000333eec60) at sys_wait4+0x13a sys/kern/kern_exit.c:694 syscall(ffff8000333eed10) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000333eed10) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7b52a1fc9d10, count: 8 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(0xfffffd806d10c970, 0x2643d6318, 0, 1) -> e ddb{1}> trace refcnt_rele(fffffd807f7d3068) at refcnt_rele+0x158 sys/kern/kern_synch.c:973 crfree(fffffd807f7d3068) at crfree+0x35 sys/kern/kern_prot.c:971 process_zap(ffff8000fffe1308) at process_zap+0x2aa proc_free sys/kern/kern_exit.c:434 [inline] process_zap(ffff8000fffe1308) at process_zap+0x2aa sys/kern/kern_exit.c:875 dowait6(ffff80002a2bb4a0,0,0,ffff8000333eebdc,25,0,5a9748a36d66251,ffff8000333eed10) at dowait6+0xb30 sys/kern/kern_exit.c:553 sys_wait4(ffff80002a2bb4a0,ffff8000333eed10,ffff8000333eec60) at sys_wait4+0x13a sys/kern/kern_exit.c:694 syscall(ffff8000333eed10) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000333eed10) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7b52a1fc9d10, count: -7 ddb{1}> show registers rdi 0 rsi 0x5c18fb5a rbp 0xffff8000333ee9c0 rbx 0 rdx 0 rcx 0xffff80002a2bb4a0 rax 0xffffffff83758848 dtps_static+0x108 r8 0x25 r9 0 r10 0x66a2488f690e5605 r11 0x891c3a877694dda4 r12 0x5c18fb5a r13 0 r14 0x2 r15 0xfffffd807f7d3068 rip 0xffffffff8271f6a8 refcnt_rele+0x158 cs 0x8 rflags 0x10286 __ALIGN_SIZE+0xf286 rsp 0xffff8000333ee980 ss 0x10 refcnt_rele+0x158: movq 0(%rax,%r12,8),%r12 ddb{1}> show proc PROC (syz-executor) tid=202506 pid=94913 tcnt=1 stat=onproc flags process=2 proc=0 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffff0f88,0xffff80002a2ba550 process=0xffff8000fffe4e48 user=0xffff8000333e9000, vmspace=0xfffffd806d10c970 estcpu=36, cpticks=2, pctcpu=0.9, user=1, sys=34, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 59037 321787 69858 0 2 0 syz-executor 59037 157606 69858 0 3 0x4000080 sbwait syz-executor 59037 258072 69858 0 3 0x4000080 sbufrcv syz-executor 75227 251766 20902 0 2 0 syz-executor 75227 401093 20902 0 3 0x4000080 fsleep syz-executor 75227 418331 20902 0 3 0x4000080 fsleep syz-executor 75227 433911 20902 0 3 0x4000080 fsleep syz-executor 73644 354374 16598 0 2 0 syz-executor 73644 48223 16598 0 3 0x4000080 fsleep syz-executor 54896 155909 20691 0 2 0 syz-executor 54896 206970 20691 0 3 0x4000080 fsleep syz-executor 54896 316445 20691 0 3 0x4000080 fsleep syz-executor 78791 157758 4409 0 4 0x82000 syz-executor 78791 509199 4409 0 3 0x4082000 biowait syz-executor 78791 82688 4409 0 3 0x4002000 suspend syz-executor 16598 289181 84692 0 3 0x82 nanoslp syz-executor 4409 345051 84692 0 3 0x82 nanoslp syz-executor 22164 267990 0 0 3 0x14200 acct acct 20691 37604 84692 0 3 0x82 nanoslp syz-executor 31466 393675 1 0 3 0x100083 ttyin getty 67649 79545 0 0 3 0x14280 nfsidl nfsio 72030 123884 0 0 3 0x14280 nfsidl nfsio 33795 474559 0 0 3 0x14280 nfsidl nfsio 57423 512337 0 0 3 0x14280 nfsidl nfsio 6245 193598 0 0 3 0x14280 nfsidl nfsio 84698 224435 0 0 3 0x14280 nfsidl nfsio 21556 416409 0 0 3 0x14280 nfsidl nfsio 56879 337658 0 0 3 0x14280 nfsidl nfsio 56366 463981 0 0 3 0x14280 nfsidl nfsio 95130 77911 0 0 3 0x14280 nfsidl nfsio 95177 263419 0 0 3 0x14280 nfsidl nfsio 25742 146457 0 0 3 0x14280 nfsidl nfsio 23796 22004 0 0 3 0x14280 nfsidl nfsio 35175 45331 0 0 3 0x14280 nfsidl nfsio 24112 142034 0 0 3 0x14280 nfsidl nfsio 36722 320776 0 0 3 0x14280 nfsidl nfsio 60547 231432 0 0 3 0x14280 nfsidl nfsio 81525 327059 0 0 3 0x14280 nfsidl nfsio 94170 127827 0 0 3 0x14280 nfsidl nfsio 87732 506788 0 0 3 0x14280 nfsidl nfsio 69858 490223 84692 0 3 0x82 nanoslp syz-executor *94913 202506 84692 0 7 0x2 syz-executor 67851 369888 0 0 3 0x14200 bored sosplice 90773 514880 84692 0 7 0x2 syz-executor 28106 319552 84692 0 3 0x2 biowait syz-executor 20902 119656 84692 0 3 0x82 nanoslp syz-executor 84692 127264 44131 0 3 0x82 kqread syz-executor 44131 157234 90030 0 3 0x10008a sigsusp ksh 90030 36001 63819 0 3 0x98 kqread sshd-session 63819 317181 54244 0 3 0x92 kqread sshd-session 54244 279058 1 0 3 0x88 kqread sshd 47170 154960 42851 74 3 0x1100092 bpf pflogd 42851 357776 1 0 3 0x80 sbwait pflogd 80416 109726 67925 73 3 0x1100090 kqread syslogd 67925 494490 1 0 3 0x100082 sbwait syslogd 35852 56862 1 0 3 0x100080 kqread resolvd 26379 228757 43888 77 3 0x100092 kqread dhcpleased 13849 82377 43888 77 3 0x100092 kqread dhcpleased 43888 400170 1 0 3 0x80 kqread dhcpleased 62308 190036 0 0 3 0x14200 bored smr 5539 371117 0 0 2 0x14200 zerothread 64323 329175 0 0 3 0x14200 aiodoned aiodoned 66892 90550 0 0 3 0x14200 syncer update 77317 17432 0 0 3 0x14200 cleaner cleaner 83467 187219 0 0 3 0x14200 reaper reaper 49241 37425 0 0 3 0x14200 pgdaemon pagedaemon 7118 198770 0 0 3 0x14200 bored viomb 73464 280559 0 0 3 0x40014200 acpi0 acpi0 91533 310646 0 0 3 0x40014200 idle1 23217 35621 0 0 3 0x14200 bored softnet3 597 479060 0 0 3 0x14200 bored softnet2 18544 373303 0 0 3 0x14200 bored softnet1 71182 498306 0 0 3 0x14200 bored softnet0 30806 85993 0 0 3 0x14200 bored systqmp 18402 518136 0 0 3 0x14200 bored systq 59879 315114 0 0 3 0x14200 tmoslp softclockmp 38503 328013 0 0 3 0x40014200 tmoslp softclock 72870 64445 0 0 3 0x40014200 idle0 1 74354 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 59037 (syz-executor) thread 0xffff8000ffff07d8 (157606) exclusive rwlock sbufrcv r = 0 (0xffff80000163c100) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 sblock+0xb7 sys/kern/uipc_socket2.c:536 #3 soreceive+0x28e sys/kern/uipc_socket.c:881 #4 recvit+0x40a sys/kern/uipc_syscalls.c:1072 #5 sys_recvmmsg+0x3d3 sys/kern/uipc_syscalls.c:963 #6 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 #7 Xsyscall+0x128 Process 78791 (syz-executor) thread 0xffff80003c429230 (509199) exclusive rrwlock inode r = 0 (0xfffffd80727f8be8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vn_write+0x190 sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x23c sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 #9 Xsyscall+0x128 Process 94913 (syz-executor) thread 0xffff80002a2bb4a0 (202506) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83a15c38) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 syscall+0xae6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #1 syscall+0xae6 sys/arch/amd64/amd64/trap.c:579 #2 Xsyscall+0x128 Process 28106 (syz-executor) thread 0xffff80002a2ba7d0 (319552) exclusive rrwlock inode r = 0 (0xfffffd806dd55d10) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2bd 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:1201 #8 ufs_lookup+0x19f8 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #11 namei+0x7aa sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1864 #13 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806c87aaf8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1864 #8 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10244 11175K 11386K 166960K 14347 0 pcb 19 18K 27K 166960K 579 0 rtable 182 10K 11K 166960K 827 0 pf 37 18K 22K 166960K 219 0 ifaddr 31 5K 7K 166960K 143 0 ifgroup 47 2K 2K 166960K 252 0 sysctl 4 1K 1K 166960K 6 0 counters 60 35K 37K 166960K 378 0 ioctlops 0 0K 4K 166960K 1902 0 iov 1 4K 24K 166960K 168 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1462 92K 93K 166960K 3444 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 40 0 VM map 2 1K 1K 166960K 2 0 sem 23 6K 6K 166960K 38 0 dirhash 15 2K 2K 166960K 51 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 236K 166960K 2187 0 sigio 0 0K 0K 166960K 63 0 proc 72 91K 128K 166960K 953 0 subproc 72 4K 4K 166960K 136 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 585 0 in_multi 54 4K 7K 166960K 233 0 ether_multi 1 0K 0K 166960K 10 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 253 1129K 1129K 166960K 253 0 exec 0 0K 1K 166960K 807 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 4 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 259 168K 182K 166960K 21201 0 UVM aobj 43 4K 4K 166960K 48 0 pinsyscall 41 82K 104K 166960K 3485 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 155 0 NDP 10 0K 2K 166960K 101 0 temp 76 8664K 8920K 166960K 75437 0 kqueue 16 24K 32K 166960K 358 0 SYN cache 2 10K 18K 166960K 3 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 120 185 0 182 1 0 1 1 0 8 0 rtentry 176 258 0 187 6 0 6 6 0 8 0 unpcb 144 1205 0 1182 7 5 2 4 0 8 1 syncache 336 12 0 12 4 3 1 1 0 8 1 tcpqe 32 4 0 4 3 2 1 1 0 8 1 tcpcb 808 891 0 885 35 27 8 14 0 8 7 arp 128 39 0 21 1 0 1 1 0 8 0 inpcb 384 2817 0 2803 38 29 9 15 0 8 7 nd6 144 51 0 38 1 0 1 1 0 8 0 pkpcb 40 19 0 19 3 2 1 1 0 8 1 kcovpl 48 15 0 7 1 0 1 1 0 8 0 ppxss 1192 127 0 127 1 0 1 1 0 8 1 pppxif 1504 76 0 76 3 2 1 1 0 8 1 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 13 0 6 1 0 1 1 0 482 0 pffrnode 88 10 0 3 1 0 1 1 0 8 0 pffrent 40 21 0 14 2 1 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 5 0 2 1 0 1 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 24 119 0 41 1 0 1 1 0 8 0 pfstkey 128 123 0 45 3 0 3 3 0 8 0 pfstate 384 120 0 43 8 0 8 8 0 8 0 pfsrctr 152 4 0 4 1 0 1 1 0 8 1 pfrule 1344 26 0 19 2 1 1 2 0 8 0 rttmr 136 2 0 2 2 1 1 1 0 8 1 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 882 0 615 31 11 20 29 0 8 0 art_table 32 886 0 615 4 0 4 4 0 8 0 art_node 16 223 0 161 1 0 1 1 0 8 0 sysvmsgpl 40 9 0 3 1 0 1 1 0 8 0 semupl 112 3 0 3 2 2 0 1 0 8 0 semapl 112 32 0 11 1 0 1 1 0 8 0 shmpl 112 45 0 5 2 0 2 2 0 8 0 dirhash 1024 43 0 24 3 0 3 3 0 8 0 dino2pl 256 5247 0 3724 96 0 96 96 0 8 0 ffsino 288 5247 0 3724 110 0 110 110 0 8 0 nchpl 144 8135 0 6427 64 0 64 64 0 8 0 rtmask 32 9 0 9 2 2 0 1 0 8 0 uvmvnodes 80 4835 0 0 99 0 99 99 0 8 0 vnodes 216 4835 0 0 269 0 269 269 0 8 0 namei 1024 29095 0 29095 2 1 1 2 0 8 1 percpumem 16 204 0 159 1 0 1 1 0 8 0 pfiaddrpl 120 1 0 0 1 0 1 1 0 8 0 kstatmem 264 142 0 122 2 0 2 2 0 8 0 scsiplug 72 8 0 8 3 2 1 1 0 8 1 scxspl 216 32543 0 32541 13 12 1 8 1 8 0 plimitpl 152 591 0 573 1 0 1 1 0 8 0 sigapl 424 2496 0 2426 11 2 9 9 0 8 0 knotepl 120 853 0 0 25 0 25 25 0 8 0 kqueuepl 224 846 0 834 10 9 1 5 0 8 0 pipepl 336 486 0 459 12 7 5 6 0 8 2 fdescpl 520 2451 0 2421 3 0 3 3 0 8 0 filepl 160 16348 0 16115 26 12 14 18 0 8 2 lockfpl 104 658 0 653 1 0 1 1 0 8 0 lockfspl 48 252 0 247 1 0 1 1 0 8 0 sessionpl 144 38 0 29 1 0 1 1 0 8 0 pgrppl 48 75 0 58 1 0 1 1 0 8 0 ucredpl 104 2160 0 2146 1 0 1 1 0 8 0 zombiepl 144 2427 0 2426 2 1 1 1 0 8 0 processpl 1208 2496 0 2426 6 0 6 6 0 8 0 procpl 656 5743 0 5662 9 1 8 8 0 8 0 srpgc 96 20 0 20 4 3 1 1 0 8 1 sosppl 168 8 0 8 2 2 0 1 0 8 0 sockpl 728 4289 0 4249 34 23 11 16 0 8 6 mcl64k 65536 9 0 0 2 0 2 2 0 8 0 mcl16k 16384 7 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 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 mcl2k 2048 39 0 0 4 0 4 4 0 8 0 mtagpl 96 86 0 0 3 0 3 3 0 8 0 mbufpl 256 258 0 0 16 0 16 16 0 8 0 bufpl 280 10217 0 4074 439 0 439 439 0 8 0 anonpl 32 11178 0 0 90 0 90 90 0 246 0 amapchunkpl 152 69921 0 69287 40 9 31 32 0 158 4 amappl16 200 6364 0 6034 37 19 18 18 0 8 0 amappl15 192 4 0 4 2 2 0 1 0 8 0 amappl14 184 145 0 133 1 0 1 1 0 8 0 amappl13 176 6 0 6 3 2 1 1 0 8 1 amappl12 168 3266 0 3236 3 1 2 3 0 8 0 amappl11 160 54 0 39 1 0 1 1 0 8 0 amappl10 152 16 0 16 1 1 0 1 0 8 0 amappl9 144 279 0 279 1 1 0 1 0 8 0 amappl8 136 24 0 21 1 0 1 1 0 8 0 amappl7 128 176 0 164 1 0 1 1 0 8 0 amappl6 120 257 0 254 1 0 1 1 0 8 0 amappl5 112 179 0 169 1 0 1 1 0 8 0 amappl4 104 363 0 344 1 0 1 1 0 8 0 amappl3 96 14589 0 14472 4 0 4 4 0 8 0 amappl2 88 793 0 730 2 0 2 2 0 8 0 amappl1 80 18371 0 17766 18 3 15 15 0 8 0 amappl 88 19976 0 19794 5 0 5 5 0 92 0 dma65536 65536 1 0 1 1 1 0 1 0 8 0 dma32768 32768 1 0 1 1 1 0 1 0 8 0 dma16384 16384 1 0 1 1 1 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 2 0 2 2 1 1 1 0 8 1 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 128 256 0 256 3 3 0 1 0 8 0 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 21 0 20 1 0 1 1 0 8 0 aobjpl 72 47 0 5 1 0 1 1 0 8 0 uaddrrnd 24 2451 0 2421 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2451 0 2421 1 0 1 1 0 8 0 vmmpekpl 168 20320 0 20261 3 0 3 3 0 8 0 vmmpepl 168 157228 0 154946 120 12 108 108 0 357 0 vmsppl 480 2450 0 2421 6 1 5 5 0 8 0 rwobjpl 72 44326 0 38178 116 3 113 113 0 8 0 pdppl 4096 4909 0 4842 119 46 73 83 0 8 6 pvpl 32 19876 0 0 162 1 161 161 0 265 0 pmappl 256 2450 0 2421 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 466 0 101 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8388bff0) 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 __mp_lock(ffffffff83a15a30) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83a15a30) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff80002a3dcbc0,ffff800000079f00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff83a15a30) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83a15a30) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff80002a3dcd90) at syscall+0xae6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3dcd90) at syscall+0xae6 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c64abb50d40, count: 6 ddb{0}> trace x86_ipi_db(ffffffff8388bff0) 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 __mp_lock(ffffffff83a15a30) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83a15a30) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff80002a3dcbc0,ffff800000079f00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff83a15a30) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83a15a30) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff80002a3dcd90) at syscall+0xae6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3dcd90) at syscall+0xae6 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c64abb50d40, count: -9 ddb{0}> machine ddbcpu 1 Stopped at refcnt_rele+0x158: movq 0(%rax,%r12,8),%r12 refcnt_rele(fffffd807f7d3068) at refcnt_rele+0x158 sys/kern/kern_synch.c:973 crfree(fffffd807f7d3068) at crfree+0x35 sys/kern/kern_prot.c:971 process_zap(ffff8000fffe1308) at process_zap+0x2aa proc_free sys/kern/kern_exit.c:434 [inline] process_zap(ffff8000fffe1308) at process_zap+0x2aa sys/kern/kern_exit.c:875 dowait6(ffff80002a2bb4a0,0,0,ffff8000333eebdc,25,0,5a9748a36d66251,ffff8000333eed10) at dowait6+0xb30 sys/kern/kern_exit.c:553 sys_wait4(ffff80002a2bb4a0,ffff8000333eed10,ffff8000333eec60) at sys_wait4+0x13a sys/kern/kern_exit.c:694 syscall(ffff8000333eed10) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000333eed10) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7b52a1fc9d10, count: 8 ddb{1}> trace refcnt_rele(fffffd807f7d3068) at refcnt_rele+0x158 sys/kern/kern_synch.c:973 crfree(fffffd807f7d3068) at crfree+0x35 sys/kern/kern_prot.c:971 process_zap(ffff8000fffe1308) at process_zap+0x2aa proc_free sys/kern/kern_exit.c:434 [inline] process_zap(ffff8000fffe1308) at process_zap+0x2aa sys/kern/kern_exit.c:875 dowait6(ffff80002a2bb4a0,0,0,ffff8000333eebdc,25,0,5a9748a36d66251,ffff8000333eed10) at dowait6+0xb30 sys/kern/kern_exit.c:553 sys_wait4(ffff80002a2bb4a0,ffff8000333eed10,ffff8000333eec60) at sys_wait4+0x13a sys/kern/kern_exit.c:694 syscall(ffff8000333eed10) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000333eed10) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7b52a1fc9d10, count: -7