panic: ffs_valloc: dup alloc Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 367097 17014 0 0 0x1 1 syz-executor *447308 12175 0 0x2 0 0K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff834331ec) at panic+0x1e5 sys/kern/subr_prf.c:198 ffs_inode_alloc(fffffd806d54a260,41ed,fffffd80097fd340,ffff80002a2d7c48) at ffs_inode_alloc+0x94e ufs_mkdir(ffff80002a2d7cb0) at ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 VOP_MKDIR(fffffd806ffc86f8,ffff80002a2d7e10,ffff80002a2d7e40,ffff80002a2d7d40) at VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 domkdirat(ffff80002a232540,ffffff9c,77a666cdf4d0,1ff) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3143 syscall(ffff80002a2d7fc0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2d7fc0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x77a666cdf570, 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: ffs_valloc: dup alloc ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff834331ec) at panic+0x1e5 sys/kern/subr_prf.c:198 ffs_inode_alloc(fffffd806d54a260,41ed,fffffd80097fd340,ffff80002a2d7c48) at ffs_inode_alloc+0x94e ufs_mkdir(ffff80002a2d7cb0) at ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 VOP_MKDIR(fffffd806ffc86f8,ffff80002a2d7e10,ffff80002a2d7e40,ffff80002a2d7d40) at VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 domkdirat(ffff80002a232540,ffffff9c,77a666cdf4d0,1ff) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3143 syscall(ffff80002a2d7fc0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2d7fc0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x77a666cdf570, count: -8 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a2d79c0 rbx 0xffffffff838c8e07 cpu_info_full_primary+0x2e07 rdx 0 rcx 0xffff80002a232540 rax 0xffffffff838c7ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xbf079640b61b3a7e r11 0xb580c99c4085a3af r12 0xffffffff838c8c08 cpu_info_full_primary+0x2c08 r13 0 r14 0 r15 0x1 rip 0xffffffff81db9fa5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a2d79b0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=447308 pid=12175 tcnt=1 stat=onproc flags process=2 proc=0 runpri=17, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffffcf98,0xffff80002a2327e8 process=0xffff8000ffff39d0 user=0xffff80002a2d3000, vmspace=0xfffffd807b63ad60 estcpu=36, cpticks=143, pctcpu=0.95, user=1, sys=141, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 14284 507517 81009 0 3 0x80 nanoslp syz-executor 14284 17235 81009 0 3 0x4000080 fsleep syz-executor 14284 184620 81009 0 3 0x4000080 fsleep syz-executor 14284 502217 81009 0 3 0x4000080 fsleep syz-executor 17014 367097 12270 0 7 0x1 syz-executor 17014 483480 12270 0 3 0x4000080 kqpoll syz-executor 17014 432667 12270 0 3 0x4000080 fsleep syz-executor 75358 135433 47319 0 2 0xc80 syz-executor 75358 242627 47319 0 3 0x4000080 fsleep syz-executor 75358 429994 47319 0 3 0x4000080 ttyopn syz-executor 75358 34429 47319 0 3 0x4000080 fsleep syz-executor 75358 501662 47319 0 3 0x4000080 fsleep syz-executor 85419 216202 13942 0 3 0x100082 sbwait arp 13942 59625 98065 0 3 0x10008a sigsusp sh 12270 205972 23903 0 2 0xc82 syz-executor 80055 289724 23903 0 3 0x82 nanoslp syz-executor 47319 199288 23903 0 3 0x82 nanoslp syz-executor 81009 413470 23903 0 3 0x82 nanoslp syz-executor 98065 62746 23903 0 3 0x82 wait syz-executor *12175 447308 23903 0 7 0x2 syz-executor 23903 107757 26154 0 3 0x82 wait syz-executor 26154 220232 17025 0 3 0x10008a sigsusp ksh 17025 330981 10949 0 3 0x98 kqread sshd-session 10949 255897 4454 0 3 0x92 kqread sshd-session 10229 422120 1 0 3 0x100083 ttyopn getty 4454 396316 1 0 3 0x88 kqread sshd 4158 313456 25694 74 3 0x1100092 bpf pflogd 25694 229037 1 0 3 0x80 sbwait pflogd 54060 300292 67432 73 3 0x1100090 kqread syslogd 67432 497574 1 0 3 0x100082 sbwait syslogd 75473 86988 1 0 3 0x100080 kqread resolvd 68046 33252 73553 77 3 0x100092 kqread dhcpleased 39420 465069 73553 77 3 0x100092 kqread dhcpleased 73553 355807 1 0 3 0x80 kqread dhcpleased 9553 150867 0 0 3 0x14200 bored smr 13774 125103 0 0 3 0x14200 pgzero zerothread 50505 171383 0 0 3 0x14200 aiodoned aiodoned 71370 465251 0 0 3 0x14200 syncer update 59780 418446 0 0 3 0x14200 cleaner cleaner 6508 179606 0 0 3 0x14200 reaper reaper 65500 106926 0 0 3 0x14200 pgdaemon pagedaemon 12135 286471 0 0 3 0x14200 bored viomb 74767 460972 0 0 3 0x40014200 acpi0 acpi0 84181 265112 0 0 3 0x40014200 idle1 63186 212603 0 0 3 0x14200 bored softnet1 69555 416517 0 0 3 0x14200 bored softnet0 3591 118955 0 0 3 0x14200 bored systqmp 71413 476338 0 0 3 0x14200 bored systq 80618 393623 0 0 3 0x14200 tmoslp softclockmp 62331 319708 0 0 3 0x40014200 tmoslp softclock 60092 2737 0 0 3 0x40014200 idle0 1 132224 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 12175 (syz-executor) thread 0xffff80002a232540 (447308) exclusive rrwlock inode r = 0 (0xfffffd806c221318) #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+0xbd sys/kern/vfs_vops.c:527 #4 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline] #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232 #6 ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3143 #10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806d54a300) #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+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576 #5 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3128 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #9 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83a942c0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] #1 syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783 #2 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11081 12164K 16261K 166960K 13027 0 pcb 17 14K 16K 166960K 175 0 rtable 193 6K 8K 166960K 462 0 pf 39 18K 25K 166960K 111 0 ifaddr 39 6K 7K 166960K 62 0 ifgroup 59 2K 3K 166960K 104 0 sysctl 4 1K 9K 166960K 12 0 counters 72 37K 38K 166960K 100 0 ioctlops 0 0K 4K 166960K 1557 0 iov 0 0K 16K 166960K 16 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1481 93K 94K 166960K 1793 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 86 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 114K 166960K 455 0 sigio 0 0K 0K 166960K 4 0 proc 75 131K 164K 166960K 563 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 56 0 in_multi 78 5K 6K 166960K 109 0 ether_multi 1 0K 0K 166960K 2 0 mrt 3 0K 0K 166960K 23 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 412 0 fusefs mount 1 32K 32K 166960K 1 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 229 161K 185K 166960K 5810 0 UVM aobj 10 2K 2K 166960K 10 0 pinsyscall 42 84K 105K 166960K 1599 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 13 0 NDP 13 0K 1K 166960K 38 0 temp 48 9080K 9148K 166960K 33490 0 kqueue 13 20K 30K 166960K 86 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 54 0 50 1 0 1 1 0 8 0 rtentry 176 118 0 37 5 0 5 5 0 8 0 unpcb 144 198 0 181 2 1 1 2 0 8 0 syncache 336 8 0 7 1 0 1 1 0 8 0 tcpqe 32 6 0 6 1 1 0 1 0 8 0 tcpcb 736 169 0 163 7 6 1 7 0 8 0 arp 136 19 0 5 1 0 1 1 0 8 0 inpcb 328 533 0 523 12 10 2 12 0 8 0 nd6 152 22 0 4 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 1 0 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 5 0 5 1 1 0 1 0 8 0 pppxif 1576 3 0 3 1 1 0 1 0 8 0 pffrag 232 3 0 0 1 0 1 1 0 482 0 pffrnode 88 3 0 0 1 0 1 1 0 8 0 pffrent 40 7 0 4 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 3 0 3 1 1 0 1 0 8 0 pfanchor 1288 6 0 1 1 0 1 1 0 8 0 pfstitem 24 48 0 1 1 0 1 1 0 8 0 pfstkey 128 50 0 3 2 0 2 2 0 8 0 pfstate 448 48 0 2 6 0 6 6 0 8 0 pfrule 1360 26 0 20 2 1 1 2 0 8 0 rttmr 136 3 0 3 1 1 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 488 0 130 27 2 25 27 0 8 0 art_table 40 490 0 130 5 0 5 5 0 8 0 art_node 32 118 0 47 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 83 0 73 1 0 1 1 0 8 0 shmpl 112 7 0 0 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2159 0 699 93 0 93 93 0 8 0 ffsino 296 2159 0 699 114 0 114 114 0 8 0 nchpl 144 2807 0 1109 64 0 64 64 0 8 0 vnodes 216 2562 0 0 143 0 143 143 0 8 0 namei 1024 9309 0 9308 2 1 1 1 0 8 0 percpumem 16 65 0 14 1 0 1 1 0 8 0 pfiaddrpl 120 1 0 1 1 1 0 1 0 8 0 kstatmem 264 52 0 22 3 0 3 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 216 9855 0 9855 11 10 1 8 1 8 1 plimitpl 152 120 0 102 1 0 1 1 0 8 0 sigapl 424 767 0 721 7 1 6 7 0 8 0 knotepl 120 315 0 0 10 0 10 10 0 8 0 kqueuepl 224 209 0 198 5 3 2 5 0 8 0 pipepl 344 146 0 119 3 0 3 3 0 8 0 fdescpl 528 749 0 719 3 0 3 3 0 8 0 filepl 160 4134 0 3912 20 7 13 20 0 8 0 lockfpl 104 256 0 253 2 1 1 2 0 8 0 lockfspl 48 119 0 116 1 0 1 1 0 8 0 sessionpl 144 32 0 22 1 0 1 1 0 8 0 pgrppl 48 43 0 25 1 0 1 1 0 8 0 ucredpl 104 487 0 474 1 0 1 1 0 8 0 zombiepl 144 724 0 721 1 0 1 1 0 8 0 processpl 1232 767 0 721 5 0 5 5 0 8 0 procpl 664 1302 0 1247 6 0 6 6 0 8 0 sockpl 752 797 0 766 18 13 5 18 0 8 0 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 172 0 0 21 0 21 21 0 8 0 mcl2k 2048 25 0 0 4 0 4 4 0 8 0 mtagpl 96 5 0 0 1 0 1 1 0 8 0 mbufpl 256 1377 0 0 87 0 87 87 0 8 0 bufpl 280 3416 0 108 237 0 237 237 0 8 0 anonpl 32 7587 0 0 62 0 62 62 0 246 0 amapchunkpl 152 18779 0 18336 33 11 22 33 0 158 0 amappl16 200 2356 0 2329 16 13 3 14 0 8 0 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 421 0 419 1 0 1 1 0 8 0 amappl13 176 165 0 152 1 0 1 1 0 8 0 amappl12 168 995 0 966 2 0 2 2 0 8 0 amappl11 160 4 0 4 1 1 0 1 0 8 0 amappl10 152 63 0 49 1 0 1 1 0 8 0 amappl9 144 295 0 295 1 1 0 1 0 8 0 amappl8 136 100 0 97 1 0 1 1 0 8 0 amappl7 128 150 0 136 1 0 1 1 0 8 0 amappl6 120 183 0 180 1 0 1 1 0 8 0 amappl5 112 100 0 89 1 0 1 1 0 8 0 amappl4 104 316 0 295 1 0 1 1 0 8 0 amappl3 96 3555 0 3448 4 0 4 4 0 8 0 amappl2 88 542 0 478 2 0 2 2 0 8 0 amappl1 80 11560 0 10937 17 2 15 17 0 8 0 amappl 88 5034 0 4881 5 0 5 5 0 92 0 uvmvnodes 80 113 0 0 3 0 3 3 0 8 0 dma32768 32768 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 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 128 254 0 254 2 2 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 9 0 0 1 0 1 1 0 8 0 uaddrrnd 24 749 0 719 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 749 0 719 1 0 1 1 0 8 0 vmmpekpl 168 7988 0 7949 3 1 2 3 0 8 0 vmmpepl 168 55613 0 53763 100 11 89 99 0 357 0 vmsppl 488 748 0 719 5 0 5 5 0 8 0 rwobjpl 80 18121 0 17032 27 1 26 27 0 8 0 pdppl 4096 1505 0 1438 107 34 73 85 0 8 6 pvpl 32 15243 0 0 123 0 123 123 0 265 0 pmappl 256 748 0 719 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 373 0 48 10 0 10 10 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff834331ec) at panic+0x1e5 sys/kern/subr_prf.c:198 ffs_inode_alloc(fffffd806d54a260,41ed,fffffd80097fd340,ffff80002a2d7c48) at ffs_inode_alloc+0x94e ufs_mkdir(ffff80002a2d7cb0) at ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 VOP_MKDIR(fffffd806ffc86f8,ffff80002a2d7e10,ffff80002a2d7e40,ffff80002a2d7d40) at VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 domkdirat(ffff80002a232540,ffffff9c,77a666cdf4d0,1ff) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3143 syscall(ffff80002a2d7fc0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2d7fc0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x77a666cdf570, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299adff0) 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(ffffffff83a93ac0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a93ac0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 ktrsysret(ffff80003c3d7780,5b,0,ffff80003c3f1c70) at ktrsysret+0xde ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] ktrsysret(ffff80003c3d7780,5b,0,ffff80003c3f1c70) at ktrsysret+0xde sys/kern/kern_ktrace.c:209 syscall(ffff80003c3f1d20) at syscall+0xa51 mi_syscall_return sys/sys/syscall_mi.h:204 [inline] syscall(ffff80003c3f1d20) at syscall+0xa51 sys/arch/amd64/amd64/trap.c:804 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ec200440df0, count: 8 ddb{1}> trace x86_ipi_db(ffff8000299adff0) 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(ffffffff83a93ac0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a93ac0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 ktrsysret(ffff80003c3d7780,5b,0,ffff80003c3f1c70) at ktrsysret+0xde ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] ktrsysret(ffff80003c3d7780,5b,0,ffff80003c3f1c70) at ktrsysret+0xde sys/kern/kern_ktrace.c:209 syscall(ffff80003c3f1d20) at syscall+0xa51 mi_syscall_return sys/sys/syscall_mi.h:204 [inline] syscall(ffff80003c3f1d20) at syscall+0xa51 sys/arch/amd64/amd64/trap.c:804 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ec200440df0, count: -7