panic: kernel diagnostic assertion "sc->sc_dev == 0" failed: file "/syzkaller/managers/multicore/kernel/sys/net/if_tun.c", line 316 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *333195 62263 0 0x2 0 1K ifconfig 264331 75106 0 0 0 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83372ee5) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833aff86,ffffffff833ff00c,13c,ffffffff832f3064) at __assert+0x29 sys/kern/subr_prf.c:-1 tun_clone_destroy(ffff800001449800) at tun_clone_destroy+0x38a if_clone_destroy(ffff80002b807740) at if_clone_destroy+0x1d5 sys/net/if.c:1389 ifioctl(ffff80000152fb78,80206979,ffff80002b807740,ffff80003c4f5260) at ifioctl+0x59d sys/net/if.c:2066 sys_ioctl(ffff80003c4f5260,ffff80002b807920,ffff80002b807870) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff80002b807920) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002b807920) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a2b9b786d30, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: kernel diagnostic assertion "sc->sc_dev == 0" failed: file "/syzkaller/managers/multicore/kernel/sys/net/if_tun.c", line 316 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83372ee5) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833aff86,ffffffff833ff00c,13c,ffffffff832f3064) at __assert+0x29 sys/kern/subr_prf.c:-1 tun_clone_destroy(ffff800001449800) at tun_clone_destroy+0x38a if_clone_destroy(ffff80002b807740) at if_clone_destroy+0x1d5 sys/net/if.c:1389 ifioctl(ffff80000152fb78,80206979,ffff80002b807740,ffff80003c4f5260) at ifioctl+0x59d sys/net/if.c:2066 sys_ioctl(ffff80003c4f5260,ffff80002b807920,ffff80002b807870) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff80002b807920) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002b807920) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a2b9b786d30, count: -9 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002b8074f0 rbx 0xffff8000299eeddf rdx 0 rcx 0xffff80003c4f5260 rax 0xffff8000299edff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x3f5a33acc9aa6a5b r11 0xedcf9e540c094f37 r12 0xffff8000299eebe0 r13 0 r14 0 r15 0x1 rip 0xffffffff81edd6d5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002b8074e0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (ifconfig) tid=333195 pid=62263 tcnt=1 stat=onproc flags process=2 proc=0 runpri=86, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a2b9a08,0xffffffff839a85d0 process=0xffff80003c4d84f8 user=0xffff80002b802000, vmspace=0xfffffd80630017c8 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *62263 333195 63915 0 7 0x2 ifconfig 75106 264331 4402 0 7 0 syz-executor 75106 452933 4402 0 2 0x4000000 syz-executor 63915 399259 41963 0 3 0x10008a sigsusp sh 41963 450553 39505 0 3 0x82 wait syz-executor 37315 55738 97835 0 3 0x80 nanoslp syz-executor 37315 65151 97835 0 3 0x4000080 ttyretype syz-executor 37315 445359 97835 0 3 0x4000080 fsleep syz-executor 62072 281402 10054 0 3 0x80 nanoslp syz-executor 62072 2569 10054 0 3 0x4000080 kqread syz-executor 62072 230936 10054 0 3 0x4000080 fsleep syz-executor 12873 368568 61901 -1 3 0x90 nanoslp syz-executor 12873 476899 61901 -1 3 0x4000090 fifor syz-executor 12873 480144 61901 -1 3 0x4000090 fifor syz-executor 12873 398808 61901 -1 3 0x4000090 fsleep syz-executor 12873 158315 61901 -1 3 0x4000090 fsleep syz-executor 59251 295832 96331 0 3 0x3000 suspend syz-executor 59251 428557 96331 0 3 0x4081000 biowait syz-executor 59251 390670 96331 0 3 0x4081000 inode syz-executor 73663 108312 0 0 3 0x14200 acct acct 60452 407108 39505 0 3 0x82 wait syz-executor 96794 31464 1 0 3 0x100083 ttyin getty 96331 106334 39505 0 3 0x82 wait syz-executor 14266 314076 0 0 3 0x14200 bored sosplice 13184 378800 0 0 3 0x14280 nfsidl nfsio 41342 81883 0 0 3 0x14280 nfsidl nfsio 23755 168781 0 0 3 0x14280 nfsidl nfsio 71618 410894 0 0 3 0x14280 nfsidl nfsio 38977 424277 0 0 3 0x14280 nfsidl nfsio 38459 356573 0 0 3 0x14280 nfsidl nfsio 52208 179404 0 0 3 0x14280 nfsidl nfsio 7831 430880 0 0 3 0x14280 nfsidl nfsio 33765 438587 0 0 3 0x14280 nfsidl nfsio 88451 407301 0 0 3 0x14280 nfsidl nfsio 59911 124569 0 0 3 0x14280 nfsidl nfsio 17398 315210 0 0 3 0x14280 nfsidl nfsio 73473 312536 0 0 3 0x14280 nfsidl nfsio 95439 19264 0 0 3 0x14280 nfsidl nfsio 18397 346233 0 0 3 0x14280 nfsidl nfsio 49485 14046 0 0 3 0x14280 nfsidl nfsio 25596 424638 0 0 3 0x14280 nfsidl nfsio 57602 140880 0 0 3 0x14280 nfsidl nfsio 14570 16779 0 0 3 0x14280 nfsidl nfsio 93241 100212 0 0 3 0x14280 nfsidl nfsio 51993 177131 39505 0 3 0x82 nanoslp syz-executor 4402 353680 39505 0 3 0x82 nanoslp syz-executor 97835 254728 39505 0 3 0x82 nanoslp syz-executor 61901 265028 39505 0 3 0x82 nanoslp syz-executor 10054 142433 39505 0 3 0x82 nanoslp syz-executor 39505 505108 43456 0 3 0x82 kqread syz-executor 43456 198130 42378 0 3 0x10008a sigsusp ksh 42378 50763 44712 0 3 0x98 kqread sshd-session 44712 345687 44754 0 3 0x92 kqread sshd-session 44754 441343 1 0 3 0x88 kqread sshd 28705 324354 81073 74 3 0x1100092 bpf pflogd 81073 496258 1 0 3 0x80 sbwait pflogd 17701 70296 41408 73 3 0x1100090 kqread syslogd 41408 84647 1 0 3 0x100082 sbwait syslogd 4920 510673 1 0 3 0x100080 kqread resolvd 43154 395004 15456 77 2 0x100092 dhcpleased 43651 456375 15456 77 3 0x100092 kqread dhcpleased 15456 82355 1 0 3 0x80 kqread dhcpleased 57740 187687 0 0 3 0x14200 bored smr 29008 451380 0 0 2 0x14200 zerothread 47837 101124 0 0 3 0x14200 aiodoned aiodoned 56655 164208 0 0 3 0x14200 syncer update 46024 104001 0 0 3 0x14200 cleaner cleaner 16400 26723 0 0 3 0x14200 reaper reaper 65592 170702 0 0 3 0x14200 pgdaemon pagedaemon 14420 137405 0 0 3 0x14200 bored viomb 65096 485343 0 0 3 0x40014200 acpi0 acpi0 49568 224290 0 0 3 0x40014200 idle1 82306 400171 0 0 3 0x14200 bored softnet7 29613 177562 0 0 3 0x14200 bored softnet6 13678 237467 0 0 3 0x14200 bored softnet5 67213 501059 0 0 3 0x14200 bored softnet4 6651 13772 0 0 3 0x14200 bored softnet3 2282 194810 0 0 3 0x14200 bored softnet2 89346 177383 0 0 3 0x14200 bored softnet1 81515 194388 0 0 3 0x14200 bored softnet0 54101 388822 0 0 3 0x14200 bored systqmp 93011 394834 0 0 3 0x14200 bored systq 57839 269800 0 0 3 0x14200 tmoslp softclockmp 37906 480665 0 0 3 0x40014200 tmoslp softclock 19121 366103 0 0 3 0x40014200 idle0 1 271720 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 62263 (ifconfig) thread 0xffff80003c4f5260 (333195) Process 75106 (syz-executor) thread 0xffff80002a2b9a08 (452933) Process 59251 (syz-executor) thread 0xffff800036809ca8 (428557) Process 59251 (syz-executor) thread 0xffff800036808d18 (390670) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10229 11138K 11778K 166960K 12822 0 pcb 18 18K 19K 166960K 336 0 rtable 140 8K 9K 166960K 523 0 pf 35 17K 82K 166960K 181 0 ifaddr 29 4K 7K 166960K 128 0 ifgroup 55 2K 3K 166960K 213 0 sysctl 4 1K 9K 166960K 21 0 counters 68 36K 38K 166960K 370 0 ioctlops 0 0K 4K 166960K 1918 0 iov 0 0K 26K 166960K 143 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1427 90K 90K 166960K 2497 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 22 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 59 0 dirhash 12 2K 2K 166960K 33 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 19 69K 240K 166960K 1486 0 sigio 0 0K 0K 166960K 32 0 proc 79 131K 180K 166960K 773 0 subproc 72 4K 4K 166960K 100 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 231 0 in_multi 44 3K 7K 166960K 171 0 ether_multi 1 0K 0K 166960K 9 0 mrt 0 0K 0K 166960K 9 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 103 466K 466K 166960K 103 0 exec 0 0K 1K 166960K 589 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 261 170K 182K 166960K 15854 0 UVM aobj 127 6K 6K 166960K 133 0 pinsyscall 44 88K 104K 166960K 2679 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 156 0 NDP 12 0K 2K 166960K 94 0 temp 80 8656K 8905K 166960K 93991 0 kqueue 14 22K 30K 166960K 309 0 SYN cache 2 16K 16K 166960K 2 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 120 158 0 155 1 0 1 1 0 8 0 rtentry 176 153 0 107 5 2 3 5 0 8 0 unpcb 144 826 0 806 8 7 1 4 0 8 0 syncache 336 10 0 10 4 3 1 1 0 8 1 tcpqe 32 4 0 4 3 2 1 1 0 8 1 tcpcb 736 580 0 573 14 7 7 7 0 8 6 arp 128 21 0 11 1 0 1 1 0 8 0 inpcb 328 1942 0 1930 30 20 10 12 0 8 8 nd6 144 27 0 20 1 0 1 1 0 8 0 pkpcb 40 12 0 12 4 4 0 1 0 8 0 kcovpl 48 11 0 3 1 0 1 1 0 8 0 mppekey 1024 3 0 3 2 2 0 1 0 8 0 ppxss 1192 138 0 138 2 1 1 1 0 8 1 pppxif 1504 6 0 6 2 2 0 1 0 8 0 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 40 0 35 2 1 1 1 0 482 0 pffrnode 88 40 0 35 2 1 1 1 0 8 0 pffrent 40 75 0 70 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 pfstitem 24 108 0 51 1 0 1 1 0 8 0 pfstkey 128 110 0 53 2 0 2 2 0 8 0 pfstate 384 109 0 52 7 0 7 7 0 8 0 pfrule 1344 24 0 18 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 741 0 526 29 10 19 28 0 8 0 art_table 40 744 0 526 5 1 4 5 0 8 0 art_node 32 151 0 115 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 4 1 0 1 1 0 8 0 semapl 112 54 0 44 1 0 1 1 0 8 0 shmpl 112 130 0 6 4 0 4 4 0 8 0 dirhash 1024 31 0 14 3 0 3 3 0 8 0 dino2pl 256 4348 0 2832 96 0 96 96 0 8 0 ffsino 296 4348 0 2832 119 1 118 118 0 8 0 nchpl 144 6392 0 4691 64 0 64 64 0 8 0 rtmask 32 11 0 11 5 5 0 1 0 8 0 uvmvnodes 80 4861 0 0 100 0 100 100 0 8 0 vnodes 216 4861 0 0 271 0 271 271 0 8 0 namei 1024 22571 0 22570 3 1 2 2 0 8 1 percpumem 16 200 0 151 1 0 1 1 0 8 0 kstatmem 264 152 0 124 3 0 3 3 0 8 0 scsiplug 72 13 0 13 4 3 1 1 0 8 1 scxspl 216 33269 0 33268 15 12 3 8 1 8 2 plimitpl 152 301 0 282 1 0 1 1 0 8 0 sigapl 424 1813 0 1736 9 0 9 9 0 8 0 knotepl 120 416 0 0 13 0 13 13 0 8 0 kqueuepl 224 646 0 636 8 6 2 5 0 8 1 pipepl 344 299 0 272 10 7 3 9 0 8 0 fdescpl 528 1765 0 1732 3 0 3 3 0 8 0 filepl 160 12328 0 12105 40 23 17 20 0 8 4 lockfpl 104 513 0 509 1 0 1 1 0 8 0 lockfspl 48 212 0 208 1 0 1 1 0 8 0 sessionpl 144 34 0 25 1 0 1 1 0 8 0 pgrppl 48 148 0 131 1 0 1 1 0 8 0 ucredpl 104 2110 0 2094 1 0 1 1 0 8 0 zombiepl 144 2639 0 2636 1 0 1 1 0 8 0 processpl 1232 1813 0 1736 6 0 6 6 0 8 0 procpl 664 4306 0 4218 9 0 9 9 0 8 0 sosppl 168 10 0 10 5 5 0 1 0 8 0 sockpl 752 2982 0 2947 44 31 13 17 0 8 8 mcl64k 65536 5 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 37 0 0 5 0 5 5 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 249 0 0 14 0 14 14 0 8 0 bufpl 280 12223 0 6080 440 0 440 440 0 8 0 anonpl 32 9883 0 0 81 1 80 80 0 246 0 amapchunkpl 152 53347 0 52790 42 14 28 31 0 158 5 amappl16 200 5238 0 5068 27 12 15 17 0 8 6 amappl15 192 41 0 41 1 1 0 1 0 8 0 amappl14 184 133 0 121 1 0 1 1 0 8 0 amappl13 176 5 0 5 2 2 0 1 0 8 0 amappl12 168 2464 0 2431 3 1 2 2 0 8 0 amappl11 160 51 0 37 1 0 1 1 0 8 0 amappl10 152 6 0 6 1 1 0 1 0 8 0 amappl9 144 259 0 259 1 1 0 1 0 8 0 amappl8 136 23 0 20 1 0 1 1 0 8 0 amappl7 128 135 0 122 1 0 1 1 0 8 0 amappl6 120 208 0 202 1 0 1 1 0 8 0 amappl5 112 132 0 121 1 0 1 1 0 8 0 amappl4 104 349 0 327 1 0 1 1 0 8 0 amappl3 96 10678 0 10553 4 0 4 4 0 8 0 amappl2 88 814 0 748 2 0 2 2 0 8 0 amappl1 80 15462 0 14858 15 0 15 15 0 8 0 amappl 88 14832 0 14646 5 0 5 5 0 92 0 dma65536 65536 1 0 1 1 1 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma256 256 8 0 8 3 3 0 1 0 8 0 dma128 128 255 0 255 3 3 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 72 132 0 6 3 0 3 3 0 8 0 uaddrrnd 24 1766 0 1733 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1766 0 1733 1 0 1 1 0 8 0 vmmpekpl 168 16579 0 16531 3 0 3 3 0 8 0 vmmpepl 168 116902 0 114678 116 15 101 105 0 357 3 vmsppl 488 1765 0 1733 6 1 5 5 0 8 0 rwobjpl 80 37359 0 31251 125 0 125 125 0 8 0 pdppl 4096 3539 0 3466 129 56 73 87 0 8 0 pvpl 32 19078 0 0 154 0 154 154 0 265 0 pmappl 256 1765 0 1733 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 328 0 84 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8381bff0) 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(ffffffff8387c130) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8387c130) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80003c529ab0,ffff800000079a80) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x7edf3e5c2760, count: 9 ddb{0}> trace x86_ipi_db(ffffffff8381bff0) 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(ffffffff8387c130) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8387c130) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80003c529ab0,ffff800000079a80) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x7edf3e5c2760, count: -6 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x25: addq $0x8,%rsp db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83372ee5) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833aff86,ffffffff833ff00c,13c,ffffffff832f3064) at __assert+0x29 sys/kern/subr_prf.c:-1 tun_clone_destroy(ffff800001449800) at tun_clone_destroy+0x38a if_clone_destroy(ffff80002b807740) at if_clone_destroy+0x1d5 sys/net/if.c:1389 ifioctl(ffff80000152fb78,80206979,ffff80002b807740,ffff80003c4f5260) at ifioctl+0x59d sys/net/if.c:2066 sys_ioctl(ffff80003c4f5260,ffff80002b807920,ffff80002b807870) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff80002b807920) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002b807920) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a2b9b786d30, count: 6 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83372ee5) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833aff86,ffffffff833ff00c,13c,ffffffff832f3064) at __assert+0x29 sys/kern/subr_prf.c:-1 tun_clone_destroy(ffff800001449800) at tun_clone_destroy+0x38a if_clone_destroy(ffff80002b807740) at if_clone_destroy+0x1d5 sys/net/if.c:1389 ifioctl(ffff80000152fb78,80206979,ffff80002b807740,ffff80003c4f5260) at ifioctl+0x59d sys/net/if.c:2066 sys_ioctl(ffff80003c4f5260,ffff80002b807920,ffff80002b807870) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff80002b807920) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002b807920) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a2b9b786d30, count: -9