uvm_fault(0xfffffd8061ec7190, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at socreate+0x84: cmpq $0,0(%rax) TID PID UID PRFLAGS PFLAGS CPU COMMAND *245242 12053 0 0 0x4000000 0K syz-executor.6 459397 80935 0 0x14000 0x200 1 reaper socreate(18,ffff800021204128,0,29) at socreate+0x84 sys/kern/uipc_socket.c:172 sys_socket(ffff80002e3a3508,ffff8000212041b8,ffff800021204210) at sys_socket+0xd8 sys/kern/uipc_syscalls.c:96 syscall(ffff800021204280) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021204280) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4c455483b50, count: 11 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: uvm_fault(0xfffffd8061ec7190, 0x0, 0, 1) -> e ddb{0}> trace socreate(18,ffff800021204128,0,29) at socreate+0x84 sys/kern/uipc_socket.c:172 sys_socket(ffff80002e3a3508,ffff8000212041b8,ffff800021204210) at sys_socket+0xd8 sys/kern/uipc_syscalls.c:96 syscall(ffff800021204280) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021204280) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4c455483b50, count: -4 ddb{0}> show registers rdi 0xffff800029337000 rsi 0x17 rbp 0xffff800021204110 rbx 0x18 rdx 0xffff800029337000 rcx 0x16 rax 0 r8 0xffffffff811cfb80 uvm_map_inentry_pc r9 0x16 r10 0 r11 0xee5290bee8582598 r12 0xffff800021204128 r13 0xffffffff82675e40 inet6sw r14 0 r15 0x29 rip 0xffffffff81b8f4e4 socreate+0x84 cs 0x8 rflags 0x10282 __ALIGN_SIZE+0xf282 rsp 0xffff8000212040b0 ss 0x10 socreate+0x84: cmpq $0,0(%rax) ddb{0}> show proc PROC (syz-executor.6) pid=245242 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff80002e3a3268,0xffff80002e3a3a58 process=0xffff80002af2b1f8 user=0xffff8000211ff000, vmspace=0xfffffd8061ec7190 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 46618 433050 85974 0 2 0 syz-executor.4 12053 194568 74888 0 2 0 syz-executor.6 *12053 245242 74888 0 7 0x4000000 syz-executor.6 69113 484346 62596 0 3 0x80 nanoslp syz-executor.2 69113 79559 62596 0 3 0x4000080 fifor syz-executor.2 69113 440043 62596 0 3 0x4000080 fsleep syz-executor.2 69113 360960 62596 0 3 0x4000080 kqpoll syz-executor.2 65460 241868 28411 0 2 0 syz-executor.5 65460 347028 28411 0 3 0x4000080 fifor syz-executor.5 65460 426288 28411 0 3 0x4000080 fsleep syz-executor.5 74888 400805 16665 0 3 0x82 nanoslp syz-executor.6 63730 136311 16665 0 3 0x82 nanoslp syz-executor.1 49050 82696 0 0 3 0x14200 acct acct 47416 437989 16665 0 2 0x2 syz-executor.0 21662 266314 16665 0 2 0x2 syz-executor.7 9442 260886 1 0 3 0x100083 ttyin getty 28411 162386 16665 0 3 0x82 nanoslp syz-executor.5 63289 430103 0 0 3 0x14280 nfsidl nfsio 1054 229564 0 0 3 0x14280 nfsidl nfsio 65533 279093 0 0 3 0x14280 nfsidl nfsio 10966 57252 0 0 3 0x14280 nfsidl nfsio 36752 466901 0 0 3 0x14280 nfsidl nfsio 62367 10517 0 0 3 0x14280 nfsidl nfsio 87512 356524 0 0 3 0x14280 nfsidl nfsio 60418 11241 0 0 3 0x14280 nfsidl nfsio 81621 324081 0 0 3 0x14280 nfsidl nfsio 73281 219411 0 0 3 0x14280 nfsidl nfsio 95237 364816 0 0 3 0x14280 nfsidl nfsio 57218 140096 0 0 3 0x14280 nfsidl nfsio 72371 423879 0 0 3 0x14280 nfsidl nfsio 25062 194331 0 0 3 0x14280 nfsidl nfsio 18073 26108 0 0 3 0x14280 nfsidl nfsio 25557 147161 0 0 3 0x14280 nfsidl nfsio 37734 329501 0 0 3 0x14280 nfsidl nfsio 12750 51359 0 0 3 0x14280 nfsidl nfsio 13293 456058 0 0 3 0x14280 nfsidl nfsio 54914 404774 0 0 3 0x14280 nfsidl nfsio 71890 335799 0 0 3 0x14200 bored sosplice 85974 310817 16665 0 3 0x82 nanoslp syz-executor.4 62596 66257 16665 0 3 0x82 nanoslp syz-executor.2 49507 409960 16665 0 3 0x82 nanoslp syz-executor.3 16665 379406 48954 0 3 0x82 thrsleep syz-fuzzer 16665 393411 48954 0 3 0x4000082 nanoslp syz-fuzzer 16665 219345 48954 0 2 0x4000082 syz-fuzzer 16665 146862 48954 0 3 0x4000082 kqread syz-fuzzer 16665 189050 48954 0 3 0x4000082 thrsleep syz-fuzzer 16665 331928 48954 0 3 0x4000082 thrsleep syz-fuzzer 16665 170218 48954 0 3 0x4000082 thrsleep syz-fuzzer 16665 410689 48954 0 3 0x4000082 thrsleep syz-fuzzer 16665 492217 48954 0 3 0x4000082 thrsleep syz-fuzzer 48954 421004 43565 0 3 0x10008a sigsusp ksh 43565 272799 77078 0 3 0x9a kqread sshd 77078 34186 1 0 3 0x88 kqread sshd 46844 520846 95117 74 3 0x1100092 bpf pflogd 95117 405179 1 0 3 0x80 netio pflogd 96279 407447 93392 73 3 0x1100090 kqread syslogd 93392 509274 1 0 3 0x100082 netio syslogd 30528 87192 1 0 3 0x100080 kqread resolvd 81815 351652 44771 77 3 0x100092 kqread dhcpleased 75777 273859 44771 77 3 0x100092 kqread dhcpleased 44771 201683 1 0 3 0x80 kqread dhcpleased 866 201639 0 0 3 0x14200 bored smr 23696 340498 0 0 2 0x14200 zerothread 40563 372616 0 0 3 0x14200 aiodoned aiodoned 56048 301386 0 0 3 0x14200 syncer update 99022 250949 0 0 3 0x14200 cleaner cleaner 80935 459397 0 0 7 0x14200 reaper 10873 103264 0 0 3 0x14200 pgdaemon pagedaemon 99996 427363 0 0 3 0x14200 bored viomb 39271 245855 0 0 3 0x40014200 acpi0 acpi0 7427 334775 0 0 3 0x40014200 idle1 22182 497811 0 0 3 0x14200 bored softnet 58607 195333 0 0 3 0x14200 bored systqmp 90596 38856 0 0 3 0x14200 bored systq 27457 160271 0 0 3 0x40014200 bored softclock 76809 186182 0 0 3 0x40014200 idle0 1 102169 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 12053 (syz-executor.6) thread 0xffff80002e3a3508 (245242) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82b6e770) #0 witness_lock+0x44d #1 kpageflttrap+0x23d sys/arch/amd64/amd64/trap.c:274 #2 kerntrap+0xef sys/arch/amd64/amd64/trap.c:318 #3 alltraps_kern_meltdown+0x7b #4 socreate+0x84 sys/kern/uipc_socket.c:172 #5 sys_socket+0xd8 sys/kern/uipc_syscalls.c:96 #6 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #6 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #7 Xsyscall+0x128 Process 47416 (syz-executor.0) thread 0xffff80002e3a2548 (437989) exclusive rrwlock inode r = 0 (0xfffffd806e342b40) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vget+0x1d3 sys/kern/vfs_subr.c:677 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1318 #8 ufs_lookup+0x13ba sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:561 #11 namei+0x36a sys/kern/vfs_lookup.c:245 #12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1850 #13 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #13 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8067c06928) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vget+0x1d3 sys/kern/vfs_subr.c:677 #6 cache_lookup+0x2b4 sys/kern/vfs_cache.c:224 #7 ufs_lookup+0x1ac sys/ufs/ufs/ufs_lookup.c:162 #8 VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:561 #10 namei+0x36a sys/kern/vfs_lookup.c:245 #11 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1850 #12 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #12 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #13 Xsyscall+0x128 Process 21662 (syz-executor.7) thread 0xffff8000260c77b0 (266314) exclusive rrwlock inode r = 0 (0xfffffd806e0dec50) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vget+0x1d3 sys/kern/vfs_subr.c:677 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1318 #8 ufs_lookup+0x13ba sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:561 #11 namei+0x36a sys/kern/vfs_lookup.c:245 #12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1850 #13 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #13 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80685746f8) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:413 #6 namei+0x36a sys/kern/vfs_lookup.c:245 #7 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1850 #8 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10199 6477K 6964K 78643K 14140 0 pcb 15 13K 15K 78643K 710 0 rtable 219 6K 9K 78643K 1648 0 ifaddr 85 18K 20K 78643K 566 0 sysctl 2 0K 0K 78643K 2 0 counters 56 35K 36K 78643K 130 0 ioctlops 0 0K 4K 78643K 1843 0 iov 0 0K 16K 78643K 532 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1398 87K 88K 78643K 2656 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 23 0 VM map 2 1K 1K 78643K 2 0 sem 11 1K 1K 78643K 13 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 14 49K 89K 78643K 2764 0 sigio 0 0K 0K 78643K 23 0 proc 71 87K 111K 78643K 776 0 subproc 104 6K 8K 78643K 207 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 90 0 in_multi 84 5K 7K 78643K 237 0 ether_multi 1 0K 0K 78643K 28 0 mrt 1 0K 0K 78643K 9 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 169 758K 758K 78643K 169 0 exec 0 0K 2K 78643K 1003 0 pfkey data 0 0K 0K 78643K 35 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 342 136K 137K 78643K 37239 0 UVM aobj 110 7K 7K 78643K 125 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 136 0 NDP 12 0K 1K 78643K 82 0 temp 131 4701K 4829K 78643K 19459 0 kqueue 12 18K 24K 78643K 201 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 101 0 98 1 0 1 1 0 8 0 rtentry 112 207 0 107 4 0 4 4 0 8 0 unpcb 136 2794 0 2777 28 27 1 7 0 8 0 syncache 296 20 0 20 5 4 1 1 0 8 1 tcpqe 32 3 0 3 2 1 1 1 0 8 1 tcpcb 736 1564 0 1552 50 42 8 24 0 8 6 arp 120 32 0 15 1 0 1 1 0 8 0 inpcb 304 3056 0 3045 46 37 9 11 0 8 8 rttmr 72 4 0 4 2 2 0 1 0 8 0 nd6 48 50 0 29 1 0 1 1 0 8 0 pkpcb 40 3 0 3 1 1 0 1 0 8 0 kcovpl 48 13 0 5 1 0 1 1 0 8 0 ppxss 1248 15 0 15 5 5 0 1 0 8 0 pfstscr 40 4 0 4 1 1 0 1 0 8 0 pffrag 232 24 0 24 2 1 1 1 0 482 1 pffrnode 88 24 0 24 2 1 1 1 0 8 1 pffrent 40 187 0 187 3 2 1 1 0 8 1 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 487 0 487 2 2 0 1 0 8 0 pftag 88 9 0 6 2 1 1 1 0 8 0 pfqueue 264 3 0 3 1 1 0 1 0 8 0 pfstitem 24 63 0 61 1 0 1 1 0 8 0 pfstkey 112 73 0 71 1 0 1 1 0 8 0 pfstate 320 70 0 68 3 2 1 3 0 8 0 pfrule 1360 142 0 141 3 2 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 792 0 383 36 7 29 30 0 8 0 art_table 32 793 0 383 4 0 4 4 0 8 0 art_node 16 206 0 115 1 0 1 1 0 8 0 sysvmsgpl 40 43 0 34 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 10 0 1 1 0 1 1 0 8 0 shmpl 112 122 0 15 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 5159 0 3718 91 0 91 91 0 8 0 ffsino 272 5159 0 3718 97 0 97 97 0 8 0 nchpl 144 9436 0 7805 63 0 63 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 31190 0 31190 3 2 1 2 0 8 1 percpumem 16 77 0 37 1 0 1 1 0 8 0 vcpupl 2048 4 0 0 1 0 1 1 0 8 0 vmpool 560 4 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 147 0 147 2 2 0 1 0 8 0 scsiplug 72 3 0 3 1 1 0 1 0 8 0 scxspl 216 24774 0 24774 13 12 1 8 0 8 1 plimitpl 152 413 0 398 1 0 1 1 0 8 0 sigapl 424 3079 0 3014 8 0 8 8 0 8 0 futexpl 64 23687 0 23685 2 1 1 1 0 8 0 knotepl 120 182 0 0 6 1 5 6 0 8 0 kqueuepl 216 560 0 551 13 12 1 5 0 8 0 pipepl 336 819 0 791 31 23 8 8 0 8 5 fdescpl 496 3043 0 3016 5 1 4 5 0 8 0 filepl 152 21380 0 21136 58 43 15 20 0 8 4 lockfpl 104 873 0 871 2 1 1 2 0 8 0 lockfspl 48 177 0 175 1 0 1 1 0 8 0 sessionpl 144 31 0 14 1 0 1 1 0 8 0 pgrppl 48 41 0 24 1 0 1 1 0 8 0 ucredpl 96 2927 0 2915 1 0 1 1 0 8 0 zombiepl 144 3016 0 3014 1 0 1 1 0 8 0 processpl 1064 3079 0 3014 5 0 5 5 0 8 0 procpl 672 8518 0 8439 11 3 8 9 0 8 0 srpgc 96 8 0 8 4 3 1 1 0 8 1 sosppl 168 22 0 22 4 4 0 1 0 8 0 sockpl 480 5955 0 5924 136 124 12 34 0 8 7 mcl64k 65536 19 0 0 3 0 3 3 0 8 0 mcl16k 16384 10 0 0 2 0 2 2 0 8 0 mcl12k 12288 23 0 0 2 0 2 2 0 8 0 mcl9k 9216 6 0 0 1 0 1 1 0 8 0 mcl8k 8192 18 0 0 3 0 3 3 0 8 0 mcl4k 4096 16 0 0 2 0 2 2 0 8 0 mcl2k2 2112 6 0 0 1 0 1 1 0 8 0 mcl2k 2048 193 0 0 20 1 19 20 0 8 0 mtagpl 96 162 0 0 4 0 4 4 0 8 0 mbufpl 256 547 0 0 27 0 27 27 0 8 0 bufpl 288 7528 0 1192 453 0 453 453 0 8 0 anonpl 24 837338 0 818589 174 29 145 145 0 186 15 amapchunkpl 152 88880 0 88078 53 15 38 43 0 158 0 amappl16 200 8023 0 7416 75 33 42 46 0 8 8 amappl15 192 1394 0 1389 1 0 1 1 0 8 0 amappl14 184 658 0 652 1 0 1 1 0 8 0 amappl13 176 267 0 263 1 0 1 1 0 8 0 amappl12 168 555 0 554 2 1 1 1 0 8 0 amappl11 160 374 0 356 1 0 1 1 0 8 0 amappl10 152 37 0 33 1 0 1 1 0 8 0 amappl9 144 476 0 474 1 0 1 1 0 8 0 amappl8 136 765 0 689 3 0 3 3 0 8 0 amappl7 128 148 0 134 1 0 1 1 0 8 0 amappl6 120 238 0 214 2 1 1 2 0 8 0 amappl5 112 1990 0 1975 1 0 1 1 0 8 0 amappl4 104 1973 0 1938 2 0 2 2 0 8 0 amappl3 96 920 0 907 1 0 1 1 0 8 0 amappl2 88 1096 0 1047 3 1 2 3 0 8 0 amappl1 80 58878 0 58335 20 6 14 19 0 8 0 amappl 88 36607 0 36365 7 0 7 7 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 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 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 72 124 0 15 2 0 2 2 0 8 0 uaddrrnd 24 3047 0 3016 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3047 0 3016 1 0 1 1 0 8 0 vmmpekpl 168 29308 0 29240 5 1 4 4 0 8 0 vmmpepl 168 279556 0 277130 198 67 131 143 0 357 10 vmsppl 368 3046 0 3015 5 1 4 4 0 8 0 rwobjpl 56 75597 0 67978 112 0 112 112 0 8 3 pdppl 4096 6101 0 6034 217 144 73 81 0 8 6 pvpl 32 1484581 0 1461392 333 97 236 256 0 265 32 pmappl 248 3046 0 3015 4 1 3 3 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1051 0 224 24 0 24 24 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace socreate(18,ffff800021204128,0,29) at socreate+0x84 sys/kern/uipc_socket.c:172 sys_socket(ffff80002e3a3508,ffff8000212041b8,ffff800021204210) at sys_socket+0xd8 sys/kern/uipc_syscalls.c:96 syscall(ffff800021204280) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021204280) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4c455483b50, count: -4 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020ce8ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff82b6e568) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82b6e568) at __mp_lock+0x122 sys/kern/kern_lock.c:147 uvm_unmap_detach(ffff800021135300,1) at uvm_unmap_detach+0x113 sys/uvm/uvm_map.c:1615 uvm_map_teardown(fffffd8061ec7d10) at uvm_map_teardown+0x262 sys/uvm/uvm_map.c:2789 uvmspace_free(fffffd8061ec7d10) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3685 reaper(ffff8000210f9a40) at reaper+0x18b sys/kern/kern_exit.c:457 end trace frame: 0x0, count: 7 ddb{1}> trace x86_ipi_db(ffff800020ce8ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff82b6e568) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82b6e568) at __mp_lock+0x122 sys/kern/kern_lock.c:147 uvm_unmap_detach(ffff800021135300,1) at uvm_unmap_detach+0x113 sys/uvm/uvm_map.c:1615 uvm_map_teardown(fffffd8061ec7d10) at uvm_map_teardown+0x262 sys/uvm/uvm_map.c:2789 uvmspace_free(fffffd8061ec7d10) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3685 reaper(ffff8000210f9a40) at reaper+0x18b sys/kern/kern_exit.c:457 end trace frame: 0x0, count: -8