uvm_fault(0xffffffff836190a8, 0xffff800026772004, 0, 1) -> d kernel: page fault trap, code=0 Stopped at ffs_nodealloccg+0x131: movl 0x4(%r14),%r13d TID PID UID PRFLAGS PFLAGS CPU COMMAND 160906 86252 0 0 0 1 syz-executor *289148 86252 0 0 0x4000000 0K syz-executor ffs_nodealloccg(fffffd8063cae560,2,cab3,2000) at ffs_nodealloccg+0x131 ffs_cgread sys/ufs/ffs/ffs_alloc.c:856 [inline] ffs_nodealloccg(fffffd8063cae560,2,cab3,2000) at ffs_nodealloccg+0x131 sys/ufs/ffs/ffs_alloc.c:1106 ffs_inode_alloc(fffffd8063cae560,2000,fffffd807f7d37b8,ffff80002a082760) at ffs_inode_alloc+0x20b ffs_hashalloc sys/ufs/ffs/ffs_alloc.c:814 [inline] ffs_inode_alloc(fffffd8063cae560,2000,fffffd807f7d37b8,ffff80002a082760) at ffs_inode_alloc+0x20b sys/ufs/ffs/ffs_alloc.c:390 ufs_makeinode(2000,fffffd80742fe560,ffff80002a082980,ffff80002a0829b0) at ufs_makeinode+0xcb sys/ufs/ufs/ufs_vnops.c:1733 ufs_mknod(ffff80002a082820) at ufs_mknod+0x5b sys/ufs/ufs/ufs_vnops.c:167 VOP_MKNOD(fffffd80742fe560,ffff80002a082980,ffff80002a0829b0,ffff80002a0828b0) at VOP_MKNOD+0x102 sys/kern/vfs_vops.c:121 domknodat(ffff800030f7c050,ffffff9c,20000040,2000,d02) at domknodat+0x47e sys/kern/vfs_syscalls.c:1624 syscall(ffff80002a082b50) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a082b50) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x80b416cb680, count: 7 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(0xffffffff836190a8, 0xffff800026772004, 0, 1) -> d ddb{0}> trace ffs_nodealloccg(fffffd8063cae560,2,cab3,2000) at ffs_nodealloccg+0x131 ffs_cgread sys/ufs/ffs/ffs_alloc.c:856 [inline] ffs_nodealloccg(fffffd8063cae560,2,cab3,2000) at ffs_nodealloccg+0x131 sys/ufs/ffs/ffs_alloc.c:1106 ffs_inode_alloc(fffffd8063cae560,2000,fffffd807f7d37b8,ffff80002a082760) at ffs_inode_alloc+0x20b ffs_hashalloc sys/ufs/ffs/ffs_alloc.c:814 [inline] ffs_inode_alloc(fffffd8063cae560,2000,fffffd807f7d37b8,ffff80002a082760) at ffs_inode_alloc+0x20b sys/ufs/ffs/ffs_alloc.c:390 ufs_makeinode(2000,fffffd80742fe560,ffff80002a082980,ffff80002a0829b0) at ufs_makeinode+0xcb sys/ufs/ufs/ufs_vnops.c:1733 ufs_mknod(ffff80002a082820) at ufs_mknod+0x5b sys/ufs/ufs/ufs_vnops.c:167 VOP_MKNOD(fffffd80742fe560,ffff80002a082980,ffff80002a0829b0,ffff80002a0828b0) at VOP_MKNOD+0x102 sys/kern/vfs_vops.c:121 domknodat(ffff800030f7c050,ffffff9c,20000040,2000,d02) at domknodat+0x47e sys/kern/vfs_syscalls.c:1624 syscall(ffff80002a082b50) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a082b50) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x80b416cb680, count: -8 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002a082590 rbx 0x2 rdx 0xffff8000011f4600 rcx 0xffff800030f7c050 rax 0xffffffff83466ff0 cpu_info_full_primary+0x1ff0 r8 0xffffffffffffffff r9 0xfffffd807f7d37b8 r10 0xef3448d90d31828b r11 0xd3e92ee8d0684d49 r12 0xfffffd8063cae560 r13 0 r14 0xffff800026772000 r15 0xfffffd8073120588 rip 0xffffffff82c25cc1 ffs_nodealloccg+0x131 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002a0824e0 ss 0x10 ffs_nodealloccg+0x131: movl 0x4(%r14),%r13d ddb{0}> show proc PROC (syz-executor) tid=289148 pid=86252 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800030f7ccf8,0xffffffff834fd8e0 process=0xffff80002f36d220 user=0xffff80002a07d000, vmspace=0xfffffd806bef71b8 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 86252 160906 28501 0 7 0 syz-executor *86252 289148 28501 0 7 0x4000000 syz-executor 99423 484632 7678 0 2 0 syz-executor 99423 438600 7678 0 3 0x4000080 fsleep syz-executor 24583 311119 61738 0 2 0 syz-executor 24583 66809 61738 0 3 0x4000080 pipewr syz-executor 87101 419074 7900 0 3 0x80 nanoslp syz-executor 87101 133592 7900 0 3 0x4000080 kqread syz-executor 87101 27091 7900 0 3 0x4000080 fsleep syz-executor 99051 208227 51667 0 3 0x3000 suspend syz-executor 99051 484311 51667 0 3 0x4081000 smrbar syz-executor 60092 468213 58668 0 3 0x90 nanoslp syz-executor 60092 124956 58668 0 3 0x4000090 sbwait syz-executor 60092 67814 58668 0 3 0x4000090 fsleep syz-executor 2638 419717 57795 0 3 0x90 nanoslp syz-executor 2638 99093 57795 0 3 0x4000090 sbwait syz-executor 44481 179031 0 0 3 0x14200 acct acct 28501 463572 5094 0 3 0x82 nanoslp syz-executor 7678 67866 5094 0 3 0x82 nanoslp syz-executor 3593 245777 5094 0 3 0x82 wait syz-executor 7900 36255 5094 0 3 0x82 nanoslp syz-executor 57795 251294 5094 0 3 0x82 nanoslp syz-executor 58668 213394 5094 0 3 0x82 nanoslp syz-executor 61738 407127 5094 0 3 0x82 nanoslp syz-executor 51667 476812 5094 0 3 0x82 nanoslp syz-executor 31380 197991 1 0 3 0x100083 ttyin getty 19940 32616 0 0 3 0x14200 bored sosplice 92671 443134 0 0 3 0x14280 nfsidl nfsio 14167 19242 0 0 3 0x14280 nfsidl nfsio 4291 493063 0 0 3 0x14280 nfsidl nfsio 18861 75102 0 0 3 0x14280 nfsidl nfsio 27193 334071 0 0 3 0x14280 nfsidl nfsio 29643 304092 0 0 3 0x14280 nfsidl nfsio 13512 400118 0 0 3 0x14280 nfsidl nfsio 51503 151952 0 0 3 0x14280 nfsidl nfsio 17196 319323 0 0 3 0x14280 nfsidl nfsio 90477 259131 0 0 3 0x14280 nfsidl nfsio 21850 345280 0 0 3 0x14280 nfsidl nfsio 75359 24726 0 0 3 0x14280 nfsidl nfsio 66604 218362 0 0 3 0x14280 nfsidl nfsio 77588 500684 0 0 3 0x14280 nfsidl nfsio 25122 348680 0 0 3 0x14280 nfsidl nfsio 61423 243888 0 0 3 0x14280 nfsidl nfsio 85917 131205 0 0 3 0x14280 nfsidl nfsio 16073 167929 0 0 3 0x14280 nfsidl nfsio 48803 413734 0 0 3 0x14280 nfsidl nfsio 90622 461345 0 0 3 0x14280 nfsidl nfsio 5094 320966 12150 0 3 0x82 kqread syz-executor 12150 511449 61018 0 3 0x10008a sigsusp ksh 61018 41679 89474 0 3 0x98 kqread sshd-session 89474 15900 30161 0 3 0x92 kqread sshd-session 30161 373629 1 0 3 0x88 kqread sshd 71892 95143 14384 74 3 0x1100092 bpf pflogd 14384 193329 1 0 3 0x80 sbwait pflogd 94011 66491 72801 73 3 0x1100090 kqread syslogd 72801 436006 1 0 3 0x100082 sbwait syslogd 98687 494404 1 0 3 0x100080 kqread resolvd 75384 309160 92155 77 3 0x100092 kqread dhcpleased 228 208863 92155 77 3 0x100092 kqread dhcpleased 92155 249216 1 0 3 0x80 kqread dhcpleased 21175 449288 0 0 3 0x14200 pause smr 44733 485133 0 0 3 0x14200 pgzero zerothread 95025 159349 0 0 3 0x14200 aiodoned aiodoned 99058 160930 0 0 3 0x14200 syncer update 47231 375496 0 0 3 0x14200 cleaner cleaner 17680 401911 0 0 3 0x14200 reaper reaper 32164 313475 0 0 3 0x14200 pgdaemon pagedaemon 48155 302273 0 0 3 0x14200 bored viomb 50514 70369 0 0 3 0x40014200 acpi0 acpi0 29835 16492 0 0 3 0x40014200 idle1 32577 174927 0 0 3 0x14200 bored softnet3 80430 98121 0 0 3 0x14200 bored softnet2 30925 400821 0 0 3 0x14200 bored softnet1 16596 303338 0 0 3 0x14200 bored softnet0 98164 321889 0 0 3 0x14200 bored systqmp 9773 521456 0 0 3 0x14200 bored systq 51017 464130 0 0 3 0x14200 tmoslp softclockmp 35361 402123 0 0 2 0x40014200 softclock 20151 13102 0 0 3 0x40014200 idle0 1 123354 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 86252 (syz-executor) thread 0xffff800030f7c050 (289148) exclusive rrwlock inode r = 0 (0xfffffd8063cae5f8) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 domknodat+0xb4 sys/kern/vfs_syscalls.c:1576 #8 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #8 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8362f4e0) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #1 syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 #2 Xsyscall+0x128 Process 99051 (syz-executor) thread 0xffff8000367bc2b8 (484311) exclusive rwlock clonelk r = 0 (0xffffffff8346dd60) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 if_clone_destroy+0x67 #3 ifioctl+0x5c5 #4 sys_ioctl+0x67c #5 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #5 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #6 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10223 10374K 14205K 166960K 12334 0 pcb 17 18K 21K 166960K 423 0 rtable 196 6K 6K 166960K 1435 0 pf 37 18K 26K 166960K 224 0 ifaddr 39 6K 7K 166960K 197 0 ifgroup 55 2K 2K 166960K 219 0 sysctl 3 0K 0K 166960K 3 0 counters 64 36K 36K 166960K 152 0 ioctlops 0 0K 4K 166960K 1651 0 iov 1 0K 24K 166960K 50 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1427 90K 90K 166960K 2326 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 10 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 30 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1690 195K 286K 166960K 12418 0 file desc 18 65K 93K 166960K 1306 0 sigio 1 0K 0K 166960K 21 0 proc 72 91K 128K 166960K 1546 0 subproc 104 6K 6K 166960K 533 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 96 0 in_multi 82 6K 7K 166960K 487 0 ether_multi 1 0K 0K 166960K 5 0 mrt 1 0K 0K 166960K 6 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 73 334K 334K 166960K 73 0 exec 0 0K 1K 166960K 850 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 259 73K 91K 166960K 11853 0 UVM aobj 17 4K 4K 166960K 19 0 pinsyscall 43 86K 107K 166960K 3251 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 34 0 NDP 12 0K 2K 166960K 139 0 temp 66 6821K 6893K 166960K 47315 0 kqueue 15 24K 26K 166960K 123 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 24 0 0 1 0 1 1 0 8 0 rtpcb 120 158 0 155 1 0 1 1 0 8 0 rtentry 112 508 0 419 4 1 3 4 0 8 0 unpcb 144 451 0 428 5 3 2 2 0 8 1 syncache 336 6 0 6 4 3 1 1 0 8 1 tcpqe 32 2 0 2 1 1 0 1 0 8 0 tcpcb 808 249 0 242 9 1 8 8 0 8 7 arp 120 90 0 72 1 0 1 1 0 8 0 inpcb 336 1215 0 1199 23 16 7 12 0 8 5 nd6 136 131 0 110 1 0 1 1 0 8 0 pkpcb 40 8 0 8 4 3 1 1 0 8 1 kcovpl 48 41 0 33 1 0 1 1 0 8 0 ppxss 1168 6 0 6 4 3 1 1 0 8 1 pfstscr 40 6 0 5 3 2 1 1 0 8 0 pffrag 232 11 0 4 1 0 1 1 0 482 0 pffrnode 88 10 0 4 1 0 1 1 0 8 0 pffrent 40 57 0 50 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 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pftag 88 1 0 1 1 1 0 1 0 8 0 pfstitem 24 105 0 62 1 0 1 1 0 8 0 pfstkey 128 108 0 65 2 0 2 2 0 8 0 pfstate 376 107 0 65 5 0 5 5 0 8 0 pfrule 1344 32 0 20 2 0 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 2033 0 1660 30 3 27 29 0 8 2 art_table 32 2034 0 1660 4 0 4 4 0 8 0 art_node 16 505 0 424 1 0 1 1 0 8 0 sysvmsgpl 40 12 0 3 1 0 1 1 0 8 0 semapl 112 27 0 17 1 0 1 1 0 8 0 shmpl 112 16 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2820 0 1257 99 0 99 99 0 8 0 ffsino 272 2820 0 1257 105 0 105 105 0 8 0 nchpl 144 4017 0 2289 65 0 65 65 0 8 0 uvmvnodes 80 3699 0 0 76 0 76 76 0 8 0 vnodes 216 3699 0 0 206 0 206 206 0 8 0 namei 1024 16604 0 16603 2 1 1 2 0 8 0 percpumem 16 90 0 44 1 0 1 1 0 8 0 kstatmem 264 112 0 88 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 216 26434 0 26434 12 11 1 8 1 8 1 plimitpl 152 292 0 275 1 0 1 1 0 8 0 sigapl 424 1565 0 1493 10 1 9 9 0 8 0 futexpl 64 10905 0 10902 3 2 1 1 0 8 0 knotepl 120 608 0 0 18 0 18 18 0 8 0 kqueuepl 216 190 0 179 1 0 1 1 0 8 0 pipepl 320 318 0 289 6 0 6 6 0 8 3 fdescpl 496 1524 0 1492 6 1 5 5 0 8 0 filepl 152 7523 0 7250 23 10 13 16 0 8 2 lockfpl 104 300 0 293 1 0 1 1 0 8 0 lockfspl 48 138 0 132 1 0 1 1 0 8 0 sessionpl 144 58 0 49 1 0 1 1 0 8 0 pgrppl 48 108 0 90 1 0 1 1 0 8 0 ucredpl 104 920 0 905 1 0 1 1 0 8 0 zombiepl 144 1495 0 1493 1 0 1 1 0 8 0 processpl 1160 1565 0 1493 6 0 6 6 0 8 0 procpl 648 2710 0 2629 11 3 8 8 0 8 0 srpgc 96 11 0 11 3 2 1 1 0 8 1 sosppl 168 1 0 1 1 1 0 1 0 8 0 sockpl 664 1844 0 1803 26 17 9 14 0 8 5 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 231 0 0 29 0 29 29 0 8 0 mtagpl 96 12 0 0 1 0 1 1 0 8 0 mbufpl 256 431 0 0 25 0 25 25 0 8 0 bufpl 280 8023 0 1782 446 0 446 446 0 8 0 anonpl 24 259515 0 255252 82 3 79 80 0 185 38 amapchunkpl 152 38471 0 37882 43 2 41 42 0 158 17 amappl16 200 4644 0 4614 28 25 3 14 0 8 0 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 183 0 171 1 0 1 1 0 8 0 amappl13 176 6 0 6 1 1 0 1 0 8 0 amappl12 168 2697 0 2665 3 1 2 2 0 8 0 amappl11 160 50 0 36 1 0 1 1 0 8 0 amappl10 152 37 0 37 1 1 0 1 0 8 0 amappl9 144 149 0 149 2 2 0 1 0 8 0 amappl8 136 23 0 20 1 0 1 1 0 8 0 amappl7 128 178 0 165 1 0 1 1 0 8 0 amappl6 120 493 0 492 1 0 1 1 0 8 0 amappl5 112 280 0 269 1 0 1 1 0 8 0 amappl4 104 415 0 398 1 0 1 1 0 8 0 amappl3 96 7461 0 7336 6 2 4 4 0 8 0 amappl2 88 1162 0 1093 2 0 2 2 0 8 0 amappl1 80 13522 0 12956 17 3 14 15 0 8 0 amappl 88 11168 0 10971 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 dma512 512 1 0 1 1 1 0 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 18 0 2 1 0 1 1 0 8 0 uaddrrnd 24 1524 0 1492 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1524 0 1492 1 0 1 1 0 8 0 vmmpekpl 168 13755 0 13707 3 0 3 3 0 8 0 vmmpepl 168 98989 0 97054 102 17 85 95 0 357 0 vmsppl 440 1523 0 1492 6 2 4 5 0 8 0 rwobjpl 56 33422 0 28750 67 1 66 66 0 8 0 pdppl 4096 3055 0 2984 147 76 71 85 0 8 0 pvpl 32 34180 0 0 276 1 275 275 0 265 0 pmappl 248 1523 0 1492 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 489 0 106 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace ffs_nodealloccg(fffffd8063cae560,2,cab3,2000) at ffs_nodealloccg+0x131 ffs_cgread sys/ufs/ffs/ffs_alloc.c:856 [inline] ffs_nodealloccg(fffffd8063cae560,2,cab3,2000) at ffs_nodealloccg+0x131 sys/ufs/ffs/ffs_alloc.c:1106 ffs_inode_alloc(fffffd8063cae560,2000,fffffd807f7d37b8,ffff80002a082760) at ffs_inode_alloc+0x20b ffs_hashalloc sys/ufs/ffs/ffs_alloc.c:814 [inline] ffs_inode_alloc(fffffd8063cae560,2000,fffffd807f7d37b8,ffff80002a082760) at ffs_inode_alloc+0x20b sys/ufs/ffs/ffs_alloc.c:390 ufs_makeinode(2000,fffffd80742fe560,ffff80002a082980,ffff80002a0829b0) at ufs_makeinode+0xcb sys/ufs/ufs/ufs_vnops.c:1733 ufs_mknod(ffff80002a082820) at ufs_mknod+0x5b sys/ufs/ufs/ufs_vnops.c:167 VOP_MKNOD(fffffd80742fe560,ffff80002a082980,ffff80002a0829b0,ffff80002a0828b0) at VOP_MKNOD+0x102 sys/kern/vfs_vops.c:121 domknodat(ffff800030f7c050,ffffff9c,20000040,2000,d02) at domknodat+0x47e sys/kern/vfs_syscalls.c:1624 syscall(ffff80002a082b50) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a082b50) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x80b416cb680, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 end of kernel end trace frame: 0x7b5c9f5f1620, count: 12 ddb{1}> trace x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 end of kernel end trace frame: 0x7b5c9f5f1620, count: -3