duvm_fault(0xfffffd80634355c0, 0x0, 0, 2) -> e kernel: page fault trap, code=0 Stopped at putc+0x8e: movb %r12b,0(%rbx) TID PID UID PRFLAGS PFLAGS CPU COMMAND 150498 92744 0 0 0 0 syz-executor.0 *161431 32856 0 0 0x4000000 1K syz-executor.5 putc(65,ffff800000685e80) at putc+0x8e sys/kern/tty_subr.c:248 ttyoutput(65,ffff800000685e00) at ttyoutput+0x8c sys/kern/tty.c:612 tputchar(65,ffff800000685e00) at tputchar+0xde ttstart sys/kern/tty.c:1403 [inline] tputchar(65,ffff800000685e00) at tputchar+0xde sys/kern/tty.c:2334 kputchar(65,5,0) at kputchar+0xd4 sys/kern/subr_prf.c:364 kprintf() at kprintf+0x6ac sys/kern/subr_prf.c:728 printf(ffffffff826384a6) at printf+0x75 sys/kern/subr_prf.c:533 settime(ffff80002e3b3598) at settime+0x169 sys_clock_settime(ffff800021224d28,ffff80002e3b35f8,ffff80002e3b3650) at sys_clock_settime+0xc7 sys/kern/kern_time.c:200 syscall(ffff80002e3b36c0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e3b36c0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x19bc7d0eea0, count: 5 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: uvm_fault(0xfffffd80634355c0, 0x0, 0, 2) -> e ddb{1}> trace putc(65,ffff800000685e80) at putc+0x8e sys/kern/tty_subr.c:248 ttyoutput(65,ffff800000685e00) at ttyoutput+0x8c sys/kern/tty.c:612 tputchar(65,ffff800000685e00) at tputchar+0xde ttstart sys/kern/tty.c:1403 [inline] tputchar(65,ffff800000685e00) at tputchar+0xde sys/kern/tty.c:2334 kputchar(65,5,0) at kputchar+0xd4 sys/kern/subr_prf.c:364 kprintf() at kprintf+0x6ac sys/kern/subr_prf.c:728 printf(ffffffff826384a6) at printf+0x75 sys/kern/subr_prf.c:533 settime(ffff80002e3b3598) at settime+0x169 sys_clock_settime(ffff800021224d28,ffff80002e3b35f8,ffff80002e3b3650) at sys_clock_settime+0xc7 sys/kern/kern_time.c:200 syscall(ffff80002e3b36c0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e3b36c0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x19bc7d0eea0, count: -10 ddb{1}> show registers rdi 0 rsi 0xffffffff rbp 0xffff80002e3b3260 rbx 0 rdx 0 rcx 0x1a314 acpi_pdirpa+0x617c rax 0xffff800021224d28 r8 0xffff80002e3b34d0 r9 0x18 r10 0xcea642a6318a85d5 r11 0xcd86326a302be37e r12 0x65 r13 0xffffffff r14 0xd r15 0xffff800000685e80 rip 0xffffffff822e6dae putc+0x8e cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002e3b3220 ss 0x10 putc+0x8e: movb %r12b,0(%rbx) ddb{1}> show proc PROC (syz-executor.5) pid=161431 stat=onproc flags process=0 proc=4000000 pri=78, usrpri=78, nice=20 forw=0xffffffffffffffff, list=0xffff80002991c7e0,0xffff8000212257b8 process=0xffff8000ffffa998 user=0xffff80002e3ae000, vmspace=0xfffffd80634355c0 estcpu=28, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 28803 96538 44713 0 2 0 syz-executor.3 28803 347890 44713 0 3 0x4000080 fsleep syz-executor.3 45585 316686 88803 0 3 0x80 nanoslp syz-executor.4 45585 177762 88803 0 3 0x4000080 fsleep syz-executor.4 45585 62476 88803 0 3 0x4000080 fsleep syz-executor.4 45585 71444 88803 0 3 0x4000080 fsleep syz-executor.4 92744 150498 75915 0 7 0 syz-executor.0 92744 120932 75915 0 2 0x4000000 syz-executor.0 92744 66553 75915 0 2 0x4000000 syz-executor.0 33417 147949 3751 0 2 0 syz-executor.6 33417 142040 3751 0 2 0x4000000 syz-executor.6 51899 355531 74881 0 2 0 syz-executor.1 51899 410944 74881 0 3 0x4000080 fsleep syz-executor.1 32856 415340 51344 0 3 0x80 nanoslp syz-executor.5 32856 324180 51344 0 3 0x4000080 nanoslp syz-executor.5 *32856 161431 51344 0 7 0x4000000 syz-executor.5 32856 64078 51344 0 2 0x4000000 syz-executor.5 75915 24890 18710 0 3 0x82 nanoslp syz-executor.0 88803 166236 18710 0 3 0x82 nanoslp syz-executor.4 74881 378965 18710 0 3 0x82 nanoslp syz-executor.1 14402 238169 0 0 3 0x14200 acct acct 80400 358654 18710 0 3 0x82 piperd syz-executor.2 33516 111843 18710 0 3 0x82 piperd syz-executor.7 51344 448879 18710 0 3 0x82 nanoslp syz-executor.5 44713 47224 18710 0 3 0x82 nanoslp syz-executor.3 3751 6588 18710 0 3 0x82 nanoslp syz-executor.6 14740 52171 0 0 3 0x14200 bored sosplice 23611 124095 1 0 3 0x100083 ttyin getty 18710 234549 68046 0 3 0x82 thrsleep syz-fuzzer 18710 197270 68046 0 3 0x4000082 thrsleep syz-fuzzer 18710 435529 68046 0 3 0x4000082 thrsleep syz-fuzzer 18710 78397 68046 0 3 0x4000082 thrsleep syz-fuzzer 18710 115964 68046 0 3 0x4000082 kqread syz-fuzzer 18710 457610 68046 0 3 0x4000082 thrsleep syz-fuzzer 18710 265463 68046 0 3 0x4000082 thrsleep syz-fuzzer 18710 249008 68046 0 3 0x4000082 thrsleep syz-fuzzer 18710 249231 68046 0 3 0x4000082 thrsleep syz-fuzzer 68046 249379 93244 0 3 0x10008a sigsusp ksh 93244 464528 10871 0 3 0x9a kqread sshd 10871 449479 1 0 3 0x88 kqread sshd 35538 493040 58471 74 3 0x1100092 bpf pflogd 58471 422160 1 0 3 0x80 netio pflogd 59904 190033 13640 73 3 0x1100090 kqread syslogd 13640 430686 1 0 3 0x100082 netio syslogd 77894 96568 1 0 3 0x100080 kqread resolvd 91180 251708 11368 77 3 0x100092 kqread dhcpleased 47626 65428 11368 77 3 0x100092 kqread dhcpleased 11368 216438 1 0 3 0x80 kqread dhcpleased 73308 17100 0 0 3 0x14200 bored smr 60138 1044 0 0 2 0x14200 zerothread 61867 16860 0 0 3 0x14200 aiodoned aiodoned 6637 355330 0 0 3 0x14200 syncer update 74205 367791 0 0 3 0x14200 cleaner cleaner 64363 225481 0 0 3 0x14200 reaper reaper 5736 239026 0 0 3 0x14200 pgdaemon pagedaemon 5476 189869 0 0 3 0x14200 bored viomb 91737 151568 0 0 3 0x40014200 acpi0 acpi0 50020 211549 0 0 3 0x40014200 idle1 77600 418612 0 0 3 0x14200 bored softnet 25542 220485 0 0 3 0x14200 bored systqmp 42270 34597 0 0 3 0x14200 bored systq 51023 151395 0 0 3 0x40014200 bored softclock 728 422654 0 0 3 0x40014200 idle0 1 346625 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 32856 (syz-executor.5) thread 0xffff800021224d28 (161431) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82b8cf48) #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 putc+0x8e sys/kern/tty_subr.c:248 #5 ttyoutput+0x8c sys/kern/tty.c:612 #6 tputchar+0xde ttstart sys/kern/tty.c:1403 [inline] #6 tputchar+0xde sys/kern/tty.c:2334 #7 kputchar+0xd4 sys/kern/subr_prf.c:364 #8 kprintf+0x6ac sys/kern/subr_prf.c:728 #9 printf+0x75 sys/kern/subr_prf.c:533 #10 settime+0x169 #11 sys_clock_settime+0xc7 sys/kern/kern_time.c:200 #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 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10218 6506K 7358K 78643K 39266 0 pcb 13 16K 18K 78643K 965 0 rtable 248 17K 18K 78643K 1232 0 ifaddr 96 21K 21K 78643K 534 0 sysctl 2 0K 0K 78643K 6 0 counters 56 35K 36K 78643K 180 0 ioctlops 0 0K 4K 78643K 2703 0 iov 0 0K 16K 78643K 849 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1396 87K 88K 78643K 7937 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 263 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 1430 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 16 57K 89K 78643K 7284 0 sigio 0 0K 0K 78643K 102 0 proc 71 87K 124K 78643K 1285 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 243 0 in_multi 99 6K 7K 78643K 398 0 ether_multi 1 0K 0K 78643K 49 0 mrt 1 0K 0K 78643K 27 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 235 1049K 1049K 78643K 235 0 exec 0 0K 2K 78643K 1891 0 pfkey data 0 0K 0K 78643K 4 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 505 765K 765K 78643K 95055 0 UVM aobj 131 8K 8K 78643K 139 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 275 0 NDP 13 0K 2K 78643K 124 0 temp 146 4735K 4807K 78643K 64912 0 kqueue 12 18K 26K 78643K 384 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> 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 120 513 0 510 9 8 1 5 0 8 0 rtentry 112 356 0 249 4 0 4 4 0 8 0 unpcb 136 3603 0 3588 48 47 1 6 0 8 0 syncache 296 29 0 29 11 11 0 1 0 8 0 tcpqe 32 5 0 5 3 3 0 1 0 8 0 tcpcb 736 3955 0 3950 103 101 2 16 0 8 1 arp 120 66 0 44 1 0 1 1 0 8 0 inpcb 304 8432 0 8425 99 97 2 14 0 8 1 rttmr 72 3 0 3 1 1 0 1 0 8 0 nd6 48 74 0 50 1 0 1 1 0 8 0 pkpcb 40 13 0 13 3 3 0 1 0 8 0 kcovpl 48 24 0 16 1 0 1 1 0 8 0 ppxss 1248 24 0 24 4 3 1 1 0 8 1 pfstscr 40 13 0 13 3 3 0 1 0 8 0 pffrag 232 15 0 12 3 2 1 1 0 482 0 pffrnode 88 15 0 12 3 2 1 1 0 8 0 pffrent 40 107 0 104 3 2 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 7 0 2 1 0 1 1 0 8 0 pfqueue 264 2 0 2 1 1 0 1 0 8 0 pfstitem 24 44 0 42 1 0 1 1 0 8 0 pfstkey 112 61 0 59 2 1 1 2 0 8 0 pfstate 320 53 0 51 3 2 1 3 0 8 0 pfrule 1360 73 0 63 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1451 0 976 45 15 30 30 0 8 0 art_table 32 1452 0 976 4 0 4 4 0 8 0 art_node 16 355 0 259 1 0 1 1 0 8 0 sysvmsgpl 40 92 0 77 1 0 1 1 0 8 0 semupl 112 12 0 12 1 1 0 1 0 8 0 semapl 112 1428 0 1418 1 0 1 1 0 8 0 shmpl 112 136 0 8 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 10434 0 8981 92 0 92 92 0 8 0 ffsino 272 10434 0 8981 98 0 98 98 0 8 0 nchpl 144 19798 0 18174 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 68299 0 68299 3 2 1 2 0 8 1 percpumem 16 102 0 62 1 0 1 1 0 8 0 vcpupl 2048 122 0 0 16 0 16 16 0 8 0 vmpool 560 132 0 10 9 0 9 9 0 8 0 pfiaddrpl 120 4 0 0 1 0 1 1 0 8 0 scxspl 216 60021 0 60021 24 23 1 8 0 8 1 plimitpl 152 715 0 700 1 0 1 1 0 8 0 sigapl 424 7584 0 7539 8 2 6 8 0 8 0 futexpl 64 69958 0 69953 3 2 1 1 0 8 0 knotepl 120 607 0 0 11 0 11 11 0 8 0 kqueuepl 216 1011 0 1003 13 12 1 5 0 8 0 pipepl 336 1096 0 1068 36 28 8 8 0 8 5 fdescpl 496 7541 0 7512 6 2 4 5 0 8 0 filepl 152 45781 0 45542 90 72 18 19 0 8 7 lockfpl 104 2075 0 2073 5 4 1 2 0 8 0 lockfspl 48 551 0 549 1 0 1 1 0 8 0 sessionpl 144 41 0 24 1 0 1 1 0 8 0 pgrppl 48 48 0 31 1 0 1 1 0 8 0 ucredpl 96 4989 0 4975 1 0 1 1 0 8 0 zombiepl 144 7539 0 7539 1 0 1 1 0 8 1 processpl 1064 7584 0 7539 5 1 4 5 0 8 0 procpl 672 21972 0 21908 11 4 7 9 0 8 0 srpgc 96 22 0 22 7 7 0 1 0 8 0 sosppl 168 15 0 15 3 3 0 1 0 8 0 sockpl 480 12594 0 12569 231 227 4 29 0 8 0 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 23 0 0 3 1 2 3 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 22 0 0 2 0 2 2 0 8 0 mcl8k 8192 33 0 0 4 1 3 3 0 8 0 mcl4k 4096 40 0 0 3 0 3 3 0 8 0 mcl2k2 2112 7 0 0 1 0 1 1 0 8 0 mcl2k 2048 250 0 0 20 2 18 20 0 8 0 mtagpl 96 1523 0 0 33 0 33 33 0 8 0 mbufpl 256 1960 0 0 108 0 108 108 0 8 0 bufpl 288 14187 0 7852 453 0 453 453 0 8 0 anonpl 24 2170326 0 2148485 236 97 139 169 0 186 0 amapchunkpl 152 234646 0 233673 72 30 42 54 0 158 0 amappl16 200 21417 0 20768 104 69 35 47 0 8 0 amappl15 192 351 0 344 1 0 1 1 0 8 0 amappl14 184 252 0 247 2 1 1 1 0 8 0 amappl13 176 1275 0 1270 1 0 1 1 0 8 0 amappl12 168 1061 0 1060 2 1 1 1 0 8 0 amappl11 160 1223 0 1209 1 0 1 1 0 8 0 amappl10 152 410 0 403 1 0 1 1 0 8 0 amappl9 144 1208 0 1201 1 0 1 1 0 8 0 amappl8 136 3381 0 3293 4 0 4 4 0 8 0 amappl7 128 2545 0 2531 1 0 1 1 0 8 0 amappl6 120 975 0 950 2 1 1 2 0 8 0 amappl5 112 6357 0 6335 1 0 1 1 0 8 0 amappl4 104 2931 0 2899 2 0 2 2 0 8 0 amappl3 96 2215 0 2201 1 0 1 1 0 8 0 amappl2 88 2637 0 2589 3 1 2 3 0 8 0 amappl1 80 139766 0 139175 20 6 14 19 0 8 0 amappl 88 94051 0 93729 9 1 8 8 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 72 138 0 8 3 0 3 3 0 8 0 uaddrrnd 24 7673 0 7522 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 7673 0 7522 1 0 1 1 0 8 0 vmmpekpl 168 61011 0 60928 6 2 4 4 0 8 0 vmmpepl 168 692157 0 689321 262 130 132 151 0 357 0 vmsppl 368 7672 0 7522 15 1 14 14 0 8 0 rwobjpl 56 176083 0 168298 118 6 112 114 0 8 0 pdppl 4096 15353 0 15166 483 292 191 191 0 8 4 pvpl 32 3700063 0 3674591 389 174 215 261 0 265 3 pmappl 248 7672 0 7522 11 1 10 10 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1494 0 446 31 0 31 31 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff82998ff0) 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(ffffffff82b8cd40) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82b8cd40) at __mp_lock+0x122 sys/kern/kern_lock.c:147 intr_handler(ffff80002e3e72c0,ffff800000077500) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f end of kernel end trace frame: 0x7f7ffffc1d90, count: 9 ddb{0}> trace x86_ipi_db(ffffffff82998ff0) 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(ffffffff82b8cd40) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82b8cd40) at __mp_lock+0x122 sys/kern/kern_lock.c:147 intr_handler(ffff80002e3e72c0,ffff800000077500) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f end of kernel end trace frame: 0x7f7ffffc1d90, count: -6 ddb{0}> machine ddbcpu 1 Stopped at putc+0x8e: movb %r12b,0(%rbx) putc(65,ffff800000685e80) at putc+0x8e sys/kern/tty_subr.c:248 ttyoutput(65,ffff800000685e00) at ttyoutput+0x8c sys/kern/tty.c:612 tputchar(65,ffff800000685e00) at tputchar+0xde ttstart sys/kern/tty.c:1403 [inline] tputchar(65,ffff800000685e00) at tputchar+0xde sys/kern/tty.c:2334 kputchar(65,5,0) at kputchar+0xd4 sys/kern/subr_prf.c:364 kprintf() at kprintf+0x6ac sys/kern/subr_prf.c:728 printf(ffffffff826384a6) at printf+0x75 sys/kern/subr_prf.c:533 settime(ffff80002e3b3598) at settime+0x169 sys_clock_settime(ffff800021224d28,ffff80002e3b35f8,ffff80002e3b3650) at sys_clock_settime+0xc7 sys/kern/kern_time.c:200 syscall(ffff80002e3b36c0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e3b36c0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x19bc7d0eea0, count: 5 ddb{1}> trace putc(65,ffff800000685e80) at putc+0x8e sys/kern/tty_subr.c:248 ttyoutput(65,ffff800000685e00) at ttyoutput+0x8c sys/kern/tty.c:612 tputchar(65,ffff800000685e00) at tputchar+0xde ttstart sys/kern/tty.c:1403 [inline] tputchar(65,ffff800000685e00) at tputchar+0xde sys/kern/tty.c:2334 kputchar(65,5,0) at kputchar+0xd4 sys/kern/subr_prf.c:364 kprintf() at kprintf+0x6ac sys/kern/subr_prf.c:728 printf(ffffffff826384a6) at printf+0x75 sys/kern/subr_prf.c:533 settime(ffff80002e3b3598) at settime+0x169 sys_clock_settime(ffff800021224d28,ffff80002e3b35f8,ffff80002e3b3650) at sys_clock_settime+0xc7 sys/kern/kern_time.c:200 syscall(ffff80002e3b36c0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e3b36c0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x19bc7d0eea0, count: -10