*cpu1: uvm_fault(0xfffffd806b7a1b90, 0x0, 0, 1) -> e ddb{0}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x725c5a058fa0, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff8000390219d0 rbx 0 rdx 0 rcx 0xffff80003c45a028 rax 0x2a r8 0xffff800039021900 r9 0 r10 0x2f8de0b6469efa22 r11 0xb5366948fcbc54ae r12 0 r13 0 r14 0 r15 0 rip 0xffffffff824504c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff800039021950 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{0}> show proc PROC (syz-executor) tid=425312 pid=86180 tcnt=4 stat=onproc flags process=0 proc=0 runpri=36, usrpri=82, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c45a2c0,0xffff80003c45a568 process=0xffff800039025d00 user=0xffff80003901c000, vmspace=0xfffffd806b7a1b90 estcpu=32, cpticks=3, pctcpu=0.0, user=3, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 98785 392630 85583 0 2 0 syz-executor 98785 60777 85583 0 3 0x4000080 wsevent_read syz-executor 90058 428040 25530 0 2 0 syz-executor 10906 81776 88876 0 2 0 syz-executor 10906 102842 88876 0 3 0x4000080 fsleep syz-executor 86509 458742 63735 0 2 0 syz-executor 86509 158730 63735 0 3 0x4000080 sbwait syz-executor 86509 61621 63735 0 2 0x4000000 syz-executor 20525 214178 85423 0 2 0 syz-executor 20525 224459 85423 0 3 0x4000080 rest syz-executor 20525 157308 85423 0 3 0x4000080 bell syz-executor *86180 425312 17828 0 7 0 syz-executor 86180 354398 17828 0 3 0x4000080 fsleep syz-executor 86180 360156 17828 0 7 0x4000000 syz-executor 86180 25340 17828 0 2 0x4000000 syz-executor 21327 87604 31154 60928 2 0x10 syz-executor 21327 6270 31154 60928 3 0x4000090 fsleep syz-executor 21327 11843 31154 60928 3 0x4000090 fsleep syz-executor 60830 237153 94425 0 3 0x80 nanoslp syz-executor 60830 415737 94425 0 3 0x4000080 kqread syz-executor 67375 142112 0 0 3 0x14200 bored sosplice 17828 84191 52676 0 3 0x82 nanoslp syz-executor 31154 360128 52676 0 3 0x82 nanoslp syz-executor 85583 364059 52676 0 3 0x82 nanoslp syz-executor 94425 183729 52676 0 3 0x82 nanoslp syz-executor 25530 307582 52676 0 3 0x82 nanoslp syz-executor 85423 330641 52676 0 3 0x82 nanoslp syz-executor 63735 275192 52676 0 3 0x82 nanoslp syz-executor 88876 173152 52676 0 3 0x82 nanoslp syz-executor 52676 245970 74599 0 3 0x82 kqread syz-executor 74599 152627 72706 0 3 0x10008a sigsusp ksh 72706 129229 24163 0 3 0x98 kqread sshd-session 24163 332618 80401 0 3 0x92 kqread sshd-session 21526 304684 1 0 3 0x100083 ttyopn getty 80401 234922 1 0 3 0x88 kqread sshd 21589 54016 70923 74 3 0x1100092 bpf pflogd 70923 512389 1 0 3 0x80 sbwait pflogd 48842 423109 49293 73 3 0x1100090 kqread syslogd 49293 280847 1 0 3 0x100082 sbwait syslogd 86427 140496 1 0 3 0x100080 kqread resolvd 53984 520283 92639 77 3 0x100092 kqread dhcpleased 13560 238170 92639 77 3 0x100092 kqread dhcpleased 92639 256653 1 0 3 0x80 kqread dhcpleased 51771 85571 0 0 3 0x14200 bored smr 70034 359447 0 0 2 0x14200 zerothread 41615 70894 0 0 3 0x14200 aiodoned aiodoned 66452 523557 0 0 3 0x14200 syncer update 30081 352742 0 0 3 0x14200 cleaner cleaner 48886 361738 0 0 3 0x14200 reaper reaper 66457 33596 0 0 3 0x14200 pgdaemon pagedaemon 2524 138700 0 0 3 0x14200 bored viomb 93824 504919 0 0 3 0x40014200 acpi0 acpi0 17102 505310 0 0 3 0x40014200 idle1 27685 253096 0 0 3 0x14200 bored softnet7 16619 90611 0 0 3 0x14200 bored softnet6 33280 496597 0 0 3 0x14200 bored softnet5 54504 93818 0 0 3 0x14200 bored softnet4 61758 276692 0 0 3 0x14200 bored softnet3 58800 151813 0 0 3 0x14200 bored softnet2 8340 445485 0 0 3 0x14200 bored softnet1 31816 323310 0 0 3 0x14200 bored softnet0 64494 152419 0 0 3 0x14200 bored systqmp 84029 417871 0 0 3 0x14200 bored systq 29682 431013 0 0 3 0x14200 tmoslp softclockmp 58129 329529 0 0 3 0x40014200 tmoslp softclock 74030 201303 0 0 3 0x40014200 idle0 1 302471 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806b7a0610) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #3 pmap_enter+0x24b rcr3 sys/arch/amd64/compile/SYZKALLER/obj/machine/cpufunc.h:139 [inline] #3 pmap_enter+0x24b pmap_map_ptes sys/arch/amd64/amd64/pmap.c:437 [inline] #3 pmap_enter+0x24b sys/arch/amd64/amd64/pmap.c:2767 #4 uvm_fault_lower_lookup+0x3d6 sys/uvm/uvm_fault.c:-1 #5 uvm_fault_lower+0x89 sys/uvm/uvm_fault.c:1370 #6 uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 #7 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #8 usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:603 #9 recall_trap+0x8 Process 90058 (syz-executor) thread 0xffff800033c09a10 (428040) exclusive rwlock uobjlk r = 0 (0xfffffd806c5689b8) #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 uvm_fault_lower_lookup+0x53 sys/uvm/uvm_fault.c:1236 #3 uvm_fault_lower+0x89 sys/uvm/uvm_fault.c:1370 #4 uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:603 #7 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd806b7a18c0) #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_read+0x3e8 sys/kern/kern_rwlock.c:413 #2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1924 #3 uvm_fault_check+0x4a sys/uvm/uvm_fault.c:741 #4 uvm_fault+0x106 sys/uvm/uvm_fault.c:677 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:603 #7 recall_trap+0x8 Process 86180 (syz-executor) thread 0xffff80003c45afb8 (360156) exclusive rwlock dtlk r = 0 (0xffffffff83845938) #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 dt_ioctl_record_stop+0x2e sys/dev/dt/dt_dev.c:565 #3 dtioctl+0x536 sys/dev/dt/dt_dev.c:318 #4 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 #5 vn_ioctl+0xf8 sys/kern/vfs_vnops.c:531 #6 sys_ioctl+0x674 sys/kern/sys_generic.c:-1 #7 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #7 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 #8 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83943eb0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 vn_ioctl+0x4d sys/kern/vfs_vnops.c:514 #2 sys_ioctl+0x674 sys/kern/sys_generic.c:-1 #3 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #3 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 #4 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10222 11096K 11263K 166960K 11563 0 pcb 17 13K 14K 166960K 83 0 rtable 208 7K 7K 166960K 299 0 pf 37 18K 25K 166960K 85 0 ifaddr 41 7K 8K 166960K 63 0 ifgroup 55 2K 2K 166960K 101 0 sysctl 3 1K 9K 166960K 10 0 counters 68 36K 37K 166960K 114 0 ioctlops 0 0K 4K 166960K 1529 0 iov 0 0K 16K 166960K 11 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1344 85K 85K 166960K 1502 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 1K 166960K 2 0 VM map 2 1K 1K 166960K 2 0 sem 5 0K 0K 166960K 8 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 93K 166960K 345 0 sigio 0 0K 0K 166960K 4 0 proc 73 131K 164K 166960K 554 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 28 0 in_multi 89 6K 7K 166960K 103 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 85 387K 387K 166960K 85 0 exec 0 0K 1K 166960K 402 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 235 175K 185K 166960K 4860 0 UVM aobj 4 2K 2K 166960K 4 0 pinsyscall 43 86K 106K 166960K 1463 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 15 0 NDP 12 0K 2K 166960K 42 0 temp 49 8648K 8719K 166960K 12503 0 kqueue 14 22K 30K 166960K 77 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 82 0 79 1 0 1 1 0 8 0 rtentry 176 101 0 10 5 0 5 5 0 8 0 unpcb 144 164 0 145 2 0 2 2 0 8 1 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 736 106 0 102 7 0 7 7 0 8 6 arp 136 10 0 0 1 0 1 1 0 8 0 inpcb 328 281 0 273 7 0 7 7 0 8 6 nd6 144 18 0 2 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 mppekey 1024 3 0 3 1 0 1 1 0 8 1 ppxss 1192 16 0 16 1 0 1 1 0 8 1 pppxif 1504 2 0 2 1 0 1 1 0 8 1 pfstscr 40 1 0 1 1 0 1 1 0 8 1 pffrag 232 3 0 0 1 0 1 1 0 482 0 pffrnode 88 2 0 0 1 0 1 1 0 8 0 pffrent 40 3 0 0 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 1 0 0 1 0 1 1 0 8 0 pfstitem 24 27 0 0 1 0 1 1 0 8 0 pfstkey 128 30 0 3 1 0 1 1 0 8 0 pfstate 384 28 0 2 3 0 3 3 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 452 0 51 28 0 28 28 0 8 1 art_table 40 454 0 51 5 0 5 5 0 8 0 art_node 32 101 0 19 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 2 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 6 0 3 1 0 1 1 0 8 0 shmpl 112 1 0 0 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1963 0 451 95 0 95 95 0 8 0 ffsino 296 1963 0 451 117 0 117 117 0 8 0 nchpl 144 2462 0 1927 63 31 32 63 0 8 8 rtmask 32 2 0 2 1 0 1 1 0 8 1 uvmvnodes 80 2110 0 0 44 0 44 44 0 8 0 vnodes 216 2110 0 0 118 0 118 118 0 8 0 namei 1024 8074 0 8074 2 0 2 2 0 8 2 percpumem 16 72 0 23 1 0 1 1 0 8 0 kstatmem 264 54 0 28 3 0 3 3 0 8 1 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 8931 0 8931 9 1 8 8 1 8 8 plimitpl 152 90 0 73 1 0 1 1 0 8 0 sigapl 424 662 0 607 7 0 7 7 0 8 0 knotepl 120 559 0 0 17 0 17 17 0 8 0 kqueuepl 224 108 0 98 1 0 1 1 0 8 0 pipepl 344 119 0 90 3 0 3 3 0 8 0 fdescpl 528 637 0 605 3 0 3 3 0 8 0 filepl 160 2820 0 2598 12 0 12 12 0 8 2 lockfpl 104 43 0 41 1 0 1 1 0 8 0 lockfspl 48 21 0 19 1 0 1 1 0 8 0 sessionpl 144 22 0 13 1 0 1 1 0 8 0 pgrppl 48 32 0 15 1 0 1 1 0 8 0 ucredpl 104 274 0 259 1 0 1 1 0 8 0 zombiepl 144 607 0 607 1 0 1 1 0 8 1 processpl 1232 662 0 607 5 0 5 5 0 8 0 procpl 664 1060 0 993 7 0 7 7 0 8 1 sosppl 168 4 0 4 1 0 1 1 0 8 1 sockpl 752 532 0 502 11 0 11 11 0 8 7 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 127 0 0 16 0 16 16 0 8 0 mcl2k 2048 25 0 0 4 0 4 4 0 8 0 mtagpl 96 1 0 0 1 0 1 1 0 8 0 mbufpl 256 159 0 0 10 0 10 10 0 8 0 bufpl 280 3491 0 123 241 0 241 241 0 8 0 anonpl 32 5553 0 0 45 0 45 45 0 246 0 amapchunkpl 152 14676 0 14203 28 3 25 25 0 158 4 amappl16 200 1992 0 1965 5 1 4 5 0 8 1 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 115 0 103 1 0 1 1 0 8 0 amappl13 176 7 0 7 1 1 0 1 0 8 0 amappl12 168 1295 0 1264 3 1 2 2 0 8 0 amappl11 160 54 0 40 1 0 1 1 0 8 0 amappl10 152 78 0 78 1 1 0 1 0 8 0 amappl9 144 255 0 255 1 1 0 1 0 8 0 amappl8 136 21 0 19 1 0 1 1 0 8 0 amappl7 128 114 0 102 1 0 1 1 0 8 0 amappl6 120 188 0 185 1 0 1 1 0 8 0 amappl5 112 137 0 127 1 0 1 1 0 8 0 amappl4 104 300 0 279 1 0 1 1 0 8 0 amappl3 96 2479 0 2386 3 0 3 3 0 8 0 amappl2 88 873 0 795 2 0 2 2 0 8 0 amappl1 80 9173 0 8572 14 0 14 14 0 8 1 amappl 88 4135 0 3974 5 0 5 5 0 92 1 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 3 0 0 1 0 1 1 0 8 0 uaddrrnd 24 637 0 605 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 637 0 605 1 0 1 1 0 8 0 vmmpekpl 168 6756 0 6717 2 0 2 2 0 8 0 vmmpepl 168 45984 0 43977 91 0 91 91 0 357 2 vmsppl 488 636 0 605 5 0 5 5 0 8 1 rwobjpl 80 16882 0 13858 62 0 62 62 0 8 0 pdppl 4096 1282 0 1210 104 32 72 86 0 8 0 pvpl 32 12897 0 0 105 0 105 105 0 265 0 pmappl 256 636 0 605 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 282 0 35 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x725c5a058fa0, count: -1 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299edff0) 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 x86_bus_space_io_write_1(3f8,0,65) at x86_bus_space_io_write_1+0x40 sys/arch/amd64/amd64/bus_space.c:782 comcnputc(800,65) at comcnputc+0x1ab bus_space_barrier sys/dev/ic/com.c:-1 [inline] comcnputc(800,65) at comcnputc+0x1ab sys/dev/ic/com.c:1263 cnputc(65) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(65) at db_putchar+0x36d sys/ddb/db_output.c:155 kprintf() at kprintf+0x29a5 sys/kern/subr_prf.c:-1 db_printf(ffffffff83312bc6) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff833d832f) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff80003c487590,0) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff80003c487590) at kerntrap+0x198 sys/arch/amd64/amd64/trap.c:489 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff80000149a000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 end trace frame: 0xffff80003c487700, count: 0 ddb{1}> trace x86_ipi_db(ffff8000299edff0) 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 x86_bus_space_io_write_1(3f8,0,65) at x86_bus_space_io_write_1+0x40 sys/arch/amd64/amd64/bus_space.c:782 comcnputc(800,65) at comcnputc+0x1ab bus_space_barrier sys/dev/ic/com.c:-1 [inline] comcnputc(800,65) at comcnputc+0x1ab sys/dev/ic/com.c:1263 cnputc(65) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(65) at db_putchar+0x36d sys/ddb/db_output.c:155 kprintf() at kprintf+0x29a5 sys/kern/subr_prf.c:-1 db_printf(ffffffff83312bc6) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff833d832f) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff80003c487590,0) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff80003c487590) at kerntrap+0x198 sys/arch/amd64/amd64/trap.c:489 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff80000149a000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtioctl(21e5f,80044403,ffff80003c4878d0,89,ffff80003c45afb8) at dtioctl+0x536 sys/dev/dt/dt_dev.c:318 VOP_IOCTL(fffffd8065d67210,80044403,ffff80003c4878d0,89,fffffd80097fb6e8,ffff80003c45afb8) at VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 vn_ioctl(fffffd805f6d9a48,80044403,ffff80003c4878d0,ffff80003c45afb8) at vn_ioctl+0xf8 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff80003c45afb8,ffff80003c487ab0,ffff80003c487a00) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff80003c487ab0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c487ab0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xee1ed0d0250, count: -20