panic: kernel diagnostic assertion "sc->sc_dev == 0" failed: file "/syzkaller/managers/multicore/kernel/sys/net/if_tun.c", line 315 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *201082 40247 0 0x2 0 0K ifconfig 369186 25970 77 0x100012 0x1 1 dhcpleased db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82751deb) at panic+0x177 sys/kern/subr_prf.c:198 __assert(ffffffff827cd2be,ffffffff82818b32,13b,ffffffff827e01fc) at __assert+0x25 sys/kern/subr_prf.c:157 tun_clone_destroy(ffff800000d79000) at tun_clone_destroy+0x278 sys/net/if_tun.c:315 if_clone_destroy(ffff80002e440ec0) at if_clone_destroy+0x132 sys/net/if.c:1247 ifioctl(fffffd806fab8b88,80206979,ffff80002e440ec0,ffff8000212bc850) at ifioctl+0x3b4 sys/net/if.c:1924 sys_ioctl(ffff8000212bc850,ffff80002e440fd0,ffff80002e441020) at sys_ioctl+0x4a2 syscall(ffff80002e4410a0) at syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e4410a0) at syscall+0x606 sys/arch/amd64/amd64/trap.c:625 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff5220, count: 6 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: kernel diagnostic assertion "sc->sc_dev == 0" failed: file "/syzkaller/managers/multicore/kernel/sys/net/if_tun.c", line 315 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82751deb) at panic+0x177 sys/kern/subr_prf.c:198 __assert(ffffffff827cd2be,ffffffff82818b32,13b,ffffffff827e01fc) at __assert+0x25 sys/kern/subr_prf.c:157 tun_clone_destroy(ffff800000d79000) at tun_clone_destroy+0x278 sys/net/if_tun.c:315 if_clone_destroy(ffff80002e440ec0) at if_clone_destroy+0x132 sys/net/if.c:1247 ifioctl(fffffd806fab8b88,80206979,ffff80002e440ec0,ffff8000212bc850) at ifioctl+0x3b4 sys/net/if.c:1924 sys_ioctl(ffff8000212bc850,ffff80002e440fd0,ffff80002e441020) at sys_ioctl+0x4a2 syscall(ffff80002e4410a0) at syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e4410a0) at syscall+0x606 sys/arch/amd64/amd64/trap.c:625 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff5220, count: -9 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002e440c70 rbx 0xffffffff82b25b8f cpu_info_full_primary+0x2b8f rdx 0 rcx 0 rax 0xffff8000212bc850 r8 0 r9 0x8080808080808080 r10 0xf6365d64325d00fc r11 0xa3c8a8ab4b6becb3 r12 0xffffffff82b25990 cpu_info_full_primary+0x2990 r13 0 r14 0 r15 0x1 rip 0xffffffff81b420b8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002e440c60 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (ifconfig) pid=201082 stat=onproc flags process=2 proc=0 pri=50, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff8000211f4020,0xffffffff82ca0df8 process=0xffff80002e42fac0 user=0xffff80002e43c000, vmspace=0xfffffd8069a4e6e0 estcpu=1, cpticks=2, pctcpu=0.0 user=0, sys=2, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND *40247 201082 78749 0 7 0x2 ifconfig 78749 18946 67759 0 3 0x10008a sigsusp sh 67759 364158 51962 0 3 0x82 wait syz-executor.0 88289 316201 51962 0 3 0x82 piperd syz-executor.5 78514 237170 51962 0 3 0x82 piperd syz-executor.1 69305 436642 51962 0 3 0x82 piperd syz-executor.4 50349 215399 51962 0 3 0x82 piperd syz-executor.6 35259 393287 51962 0 3 0x82 piperd syz-executor.2 3917 455065 1 0 3 0x100083 ttyopn getty 93743 185560 51962 0 3 0x82 piperd syz-executor.7 20904 62259 0 0 3 0x14280 nfsidl nfsio 37509 239713 0 0 3 0x14280 nfsidl nfsio 28231 370409 0 0 3 0x14280 nfsidl nfsio 32938 190829 0 0 3 0x14280 nfsidl nfsio 30684 94875 0 0 3 0x14280 nfsidl nfsio 36006 81233 0 0 3 0x14280 nfsidl nfsio 68833 344522 0 0 3 0x14280 nfsidl nfsio 89576 184459 0 0 3 0x14280 nfsidl nfsio 24578 13793 0 0 3 0x14280 nfsidl nfsio 24533 96249 0 0 3 0x14280 nfsidl nfsio 92453 403415 0 0 3 0x14280 nfsidl nfsio 1611 314137 0 0 3 0x14280 nfsidl nfsio 3452 150988 0 0 3 0x14280 nfsidl nfsio 43702 405517 0 0 3 0x14280 nfsidl nfsio 840 398053 0 0 3 0x14280 nfsidl nfsio 89645 51705 0 0 3 0x14280 nfsidl nfsio 15781 76704 0 0 3 0x14280 nfsidl nfsio 87435 131799 0 0 3 0x14280 nfsidl nfsio 63528 214419 0 0 3 0x14280 nfsidl nfsio 71048 26849 0 0 3 0x14280 nfsidl nfsio 75141 204529 0 0 3 0x14200 bored sosplice 43865 60545 51962 0 3 0x82 piperd syz-executor.3 51962 26657 18412 0 3 0x82 wait syz-fuzzer 51962 109603 18412 0 3 0x4000082 nanoslp syz-fuzzer 51962 194128 18412 0 3 0x4000082 thrsleep syz-fuzzer 51962 100943 18412 0 3 0x4000082 thrsleep syz-fuzzer 51962 407610 18412 0 3 0x4000082 thrsleep syz-fuzzer 51962 270390 18412 0 3 0x4000082 kqread syz-fuzzer 51962 32596 18412 0 3 0x4000082 wait syz-fuzzer 51962 314746 18412 0 3 0x4000082 wait syz-fuzzer 51962 37866 18412 0 3 0x4000082 wait syz-fuzzer 51962 351395 18412 0 3 0x4000082 wait syz-fuzzer 51962 213459 18412 0 3 0x4000082 thrsleep syz-fuzzer 51962 118088 18412 0 3 0x4000082 wait syz-fuzzer 51962 242527 18412 0 3 0x4000082 wait syz-fuzzer 51962 510314 18412 0 3 0x4000082 thrsleep syz-fuzzer 51962 504343 18412 0 3 0x4000082 thrsleep syz-fuzzer 51962 85638 18412 0 3 0x4000082 wait syz-fuzzer 18412 506374 55640 0 3 0x10008a sigsusp ksh 55640 502155 435 0 3 0x9a kqread sshd 435 314017 1 0 3 0x88 kqread sshd 26607 228107 62904 74 3 0x1100092 bpf pflogd 62904 170643 1 0 3 0x80 netio pflogd 59585 161038 6854 73 3 0x1100090 kqread syslogd 6854 510124 1 0 3 0x100082 netio syslogd 11806 482895 1 0 3 0x100080 kqread resolvd 25970 369186 39883 77 7 0x100013 dhcpleased 62397 205651 39883 77 3 0x100092 kqread dhcpleased 39883 296182 1 0 3 0x80 kqread dhcpleased 10893 186336 0 0 3 0x14200 bored smr 96585 524225 0 0 3 0x14200 pgzero zerothread 81883 401156 0 0 3 0x14200 aiodoned aiodoned 61248 436254 0 0 3 0x14200 syncer update 43661 422471 0 0 3 0x14200 cleaner cleaner 33195 273406 0 0 3 0x14200 reaper reaper 38067 378221 0 0 3 0x14200 pgdaemon pagedaemon 89409 184351 0 0 3 0x14200 bored viomb 45347 278738 0 0 3 0x40014200 acpi0 acpi0 78297 120815 0 0 3 0x40014200 idle1 32859 407764 0 0 3 0x14200 bored softnet 33997 110896 0 0 3 0x14200 bored softnet 38183 372723 0 0 3 0x14200 bored softnet 92761 64334 0 0 3 0x14200 bored softnet 27254 81331 0 0 3 0x14200 bored systqmp 78597 276161 0 0 3 0x14200 bored systq 14423 20012 0 0 2 0x40014200 softclock 90144 512453 0 0 3 0x40014200 idle0 1 179150 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 40247 (ifconfig) thread 0xffff8000212bc850 (201082) exclusive rwlock clonelk r = 0 (0xffffffff82b495e0) #0 witness_lock+0x44d #1 if_clone_destroy+0x49 #2 ifioctl+0x3b4 sys/net/if.c:1924 #3 sys_ioctl+0x4a2 #4 syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] #4 syscall+0x606 sys/arch/amd64/amd64/trap.c:625 #5 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82db6228) #0 witness_lock+0x44d #1 ifioctl+0x3ac sys/net/if.c:1924 #2 sys_ioctl+0x4a2 #3 syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] #3 syscall+0x606 sys/arch/amd64/amd64/trap.c:625 #4 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10240 6505K 6902K 78643K 25731 0 pcb 13 18K 20K 78643K 1648 0 rtable 207 16K 17K 78643K 1600 0 ifaddr 86 26K 28K 78643K 485 0 sysctl 3 1K 1K 78643K 3 0 counters 60 35K 36K 78643K 474 0 ioctlops 0 0K 4K 78643K 2000 0 iov 0 0K 36K 78643K 1110 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1403 88K 88K 78643K 7367 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 68 0 VM map 2 1K 1K 78643K 2 0 sem 21 5K 10K 78643K 655 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 12 41K 89K 78643K 8127 0 sigio 0 0K 0K 78643K 366 0 proc 79 103K 128K 78643K 1299 0 subproc 104 6K 6K 78643K 312 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 316 0 in_multi 74 5K 6K 78643K 392 0 ether_multi 1 0K 0K 78643K 41 0 mrt 1 0K 0K 78643K 42 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 187 837K 837K 78643K 187 0 exec 0 0K 1K 78643K 1476 0 pfkey data 0 0K 0K 78643K 8 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 8 62K 64K 78643K 10 0 UVM amap 357 91K 103K 78643K 57951 0 UVM aobj 131 4K 4K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 253 0 NDP 16 0K 0K 78643K 154 0 temp 143 5778K 6802K 78643K 56786 0 kqueue 12 18K 26K 78643K 579 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 120 452 0 449 6 5 1 3 0 8 0 rtentry 112 423 0 338 4 1 3 4 0 8 0 unpcb 144 8240 0 8225 89 88 1 10 0 8 0 syncache 296 36 0 36 12 12 0 1 0 8 0 tcpqe 32 871 0 871 10 10 0 1 0 8 0 tcpcb 776 8847 0 8843 119 112 7 15 0 8 6 arp 120 60 0 44 1 0 1 1 0 8 0 inpcb 368 18154 0 18146 178 171 7 14 0 8 6 nd6 48 81 0 62 1 0 1 1 0 8 0 pkpcb 40 22 0 22 7 7 0 1 0 8 0 kcovpl 48 24 0 16 1 0 1 1 0 8 0 mppekey 1024 6 0 6 3 3 0 1 0 8 0 ppxss 1256 156 0 155 10 9 1 1 0 8 0 pppxif 1456 116 0 116 9 9 0 1 0 8 0 pfstscr 40 21 0 21 5 5 0 1 0 8 0 pffrag 232 59 0 59 3 3 0 1 0 482 0 pffrnode 88 59 0 59 3 3 0 1 0 8 0 pffrent 40 119 0 119 3 3 0 1 0 8 0 pfosfp 40 1429 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1429 0 714 21 0 21 21 0 8 0 pfanchor 1280 1023 72 511 49 6 43 43 0 8 0 pfstitem 24 142 0 140 1 0 1 1 0 8 0 pfstkey 128 166 0 164 2 1 1 2 0 8 0 pfstate 384 149 0 147 6 5 1 4 0 8 0 pfrule 1344 21 0 20 2 1 1 2 0 8 0 rttmr 136 6 0 6 2 2 0 1 0 8 0 art_heap8 4096 5 0 4 4 3 1 2 0 8 0 art_heap4 256 1869 0 1513 47 21 26 29 0 8 0 art_table 32 1874 0 1517 5 1 4 4 0 8 0 art_node 16 380 0 306 1 0 1 1 0 8 0 sysvmsgpl 40 12 0 7 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 611 0 592 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 12339 0 10876 92 0 92 92 0 8 0 ffsino 272 12339 0 10876 98 0 98 98 0 8 0 nchpl 144 23340 0 21698 63 0 63 63 0 8 0 rtmask 32 6 0 6 3 3 0 1 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 78642 0 78642 8 7 1 2 0 8 1 percpumem 16 250 0 207 1 0 1 1 0 8 0 vmpool 696 12 0 12 4 4 0 1 0 8 0 kstatmem 264 200 0 168 4 1 3 3 0 8 0 scsiplug 72 9 0 9 3 3 0 1 0 8 0 scxspl 216 74006 0 74006 30 29 1 8 0 8 1 plimitpl 152 1219 0 1203 1 0 1 1 0 8 0 sigapl 424 8426 0 8363 10 2 8 8 0 8 0 futexpl 64 78159 0 78159 5 4 1 1 0 8 1 knotepl 120 926 0 0 18 1 17 17 0 8 0 kqueuepl 216 1313 0 1305 19 18 1 5 0 8 0 pipepl 320 1664 0 1636 48 45 3 8 0 8 0 fdescpl 496 8387 0 8362 5 0 5 5 0 8 0 filepl 152 64609 0 64371 141 129 12 26 0 8 1 lockfpl 104 2275 0 2273 5 4 1 2 0 8 0 lockfspl 48 758 0 756 1 0 1 1 0 8 0 sessionpl 144 42 0 25 1 0 1 1 0 8 0 pgrppl 48 239 0 222 1 0 1 1 0 8 0 ucredpl 104 6755 0 6742 1 0 1 1 0 8 0 zombiepl 144 8363 0 8363 4 3 1 1 0 8 1 processpl 1072 8426 0 8363 5 0 5 5 0 8 0 procpl 696 23219 0 23141 27 17 10 11 0 8 0 srpgc 96 27 0 27 7 7 0 1 0 8 0 sosppl 168 43 0 43 8 8 0 1 0 8 0 sockpl 488 26884 0 26858 511 499 12 38 0 8 8 mcl64k 65536 25 0 0 4 1 3 3 0 8 0 mcl16k 16384 26 0 0 4 1 3 3 0 8 0 mcl12k 12288 30 0 0 2 0 2 2 0 8 0 mcl9k 9216 10 0 0 1 0 1 1 0 8 0 mcl8k 8192 25 0 0 4 1 3 3 0 8 0 mcl4k 4096 27 0 0 4 1 3 3 0 8 0 mcl2k2 2112 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 460 0 0 45 7 38 45 0 8 2 mtagpl 96 545 0 0 9 0 9 9 0 8 0 mbufpl 256 6896 0 0 413 0 413 413 0 8 0 bufpl 288 16670 0 10342 453 0 453 453 0 8 0 anonpl 24 1746581 0 1730975 266 136 130 195 0 186 0 amapchunkpl 152 182929 0 182232 95 61 34 63 0 158 0 amappl16 200 16628 0 16047 116 83 33 44 0 8 0 amappl15 192 8 0 8 2 2 0 1 0 8 0 amappl14 184 202 0 188 2 1 1 2 0 8 0 amappl13 176 8 0 8 2 2 0 1 0 8 0 amappl12 168 608 0 603 1 0 1 1 0 8 0 amappl11 160 50 0 36 1 0 1 1 0 8 0 amappl10 152 56 0 45 1 0 1 1 0 8 0 amappl9 144 1035 0 1033 1 0 1 1 0 8 0 amappl8 136 499 0 388 4 0 4 4 0 8 0 amappl7 128 222 0 195 2 1 1 2 0 8 0 amappl6 120 287 0 268 2 1 1 2 0 8 0 amappl5 112 336 0 325 1 0 1 1 0 8 0 amappl4 104 748 0 710 2 0 2 2 0 8 0 amappl3 96 25183 0 25136 2 0 2 2 0 8 0 amappl2 88 9218 0 9138 4 2 2 4 0 8 0 amappl1 80 193106 0 192406 30 12 18 28 0 8 0 amappl 88 57013 0 56838 8 2 6 6 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 72 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 8399 0 8374 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 8399 0 8374 1 0 1 1 0 8 0 vmmpekpl 168 67088 0 67020 4 0 4 4 0 8 0 vmmpepl 168 769690 0 767146 270 119 151 153 0 357 7 vmsppl 440 8398 0 8374 6 2 4 5 0 8 0 rwobjpl 56 210819 0 202972 127 12 115 117 0 8 0 pdppl 4096 16805 0 16748 447 378 69 81 0 8 12 pvpl 32 3496918 0 3476106 584 365 219 367 0 265 0 pmappl 248 8398 0 8374 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1820 0 605 36 0 36 36 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82751deb) at panic+0x177 sys/kern/subr_prf.c:198 __assert(ffffffff827cd2be,ffffffff82818b32,13b,ffffffff827e01fc) at __assert+0x25 sys/kern/subr_prf.c:157 tun_clone_destroy(ffff800000d79000) at tun_clone_destroy+0x278 sys/net/if_tun.c:315 if_clone_destroy(ffff80002e440ec0) at if_clone_destroy+0x132 sys/net/if.c:1247 ifioctl(fffffd806fab8b88,80206979,ffff80002e440ec0,ffff8000212bc850) at ifioctl+0x3b4 sys/net/if.c:1924 sys_ioctl(ffff8000212bc850,ffff80002e440fd0,ffff80002e441020) at sys_ioctl+0x4a2 syscall(ffff80002e4410a0) at syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e4410a0) at syscall+0x606 sys/arch/amd64/amd64/trap.c:625 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff5220, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020d68ff0) 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(ffffffff82db6020) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82db6020) at __mp_lock+0x122 sys/kern/kern_lock.c:147 ktrstruct(ffff8000212022c8,ffffffff82803d15,ffff800021209bd0,20) at ktrstruct+0xd6 sys/kern/kern_ktrace.c:307 sys_kevent(ffff8000212022c8,ffff800021209d90,ffff800021209de0) at sys_kevent+0x550 sys/kern/kern_event.c:985 syscall(ffff800021209e60) at syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff800021209e60) at syscall+0x606 sys/arch/amd64/amd64/trap.c:625 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc90b0, count: 7 ddb{1}> trace x86_ipi_db(ffff800020d68ff0) 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(ffffffff82db6020) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82db6020) at __mp_lock+0x122 sys/kern/kern_lock.c:147 ktrstruct(ffff8000212022c8,ffffffff82803d15,ffff800021209bd0,20) at ktrstruct+0xd6 sys/kern/kern_ktrace.c:307 sys_kevent(ffff8000212022c8,ffff800021209d90,ffff800021209de0) at sys_kevent+0x550 sys/kern/kern_event.c:985 syscall(ffff800021209e60) at syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff800021209e60) at syscall+0x606 sys/arch/amd64/amd64/trap.c:625 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc90b0, count: -8