uvm_fault(0xfffffd807efff2e0, 0xe3, 0, 1) -> e kernel: page fault trap, code=0 Stopped at rtrequest+0x59b: movb 0xe3(%r12),%al ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xfffffd807efff2e0, 0xe3, 0, 1) -> e rtrequest(1,ffff800020eba138,4,ffff800020eba1d8,0) at rtrequest+0x59b sys/net/route.c:884 end trace frame: 0xffff800020eba220, count: 0 ddb{1}> trace rtrequest(1,ffff800020eba138,4,ffff800020eba1d8,0) at rtrequest+0x59b sys/net/route.c:884 icmp6_mtudisc_clone(ffff800020eba230,0) at icmp6_mtudisc_clone+0x178 sys/netinet6/icmp6.c:1819 icmp6_mtudisc_update(ffff800020eba370,0) at icmp6_mtudisc_update+0x19f sys/netinet6/icmp6.c:1018 udp6_ctlinput(5,ffff800020eba3c8,0,ffff800020eba370) at udp6_ctlinput+0x443 icmp6_notify_error(fffffd8064389300,28,38,5) at icmp6_notify_error+0xa1e sys/netinet6/icmp6.c:963 icmp6_input(ffff800020eba798,ffff800020eba7a4,3a,18) at icmp6_input+0xa20 sys/netinet6/icmp6.c:745 ip_deliver(ffff800020eba798,ffff800020eba7a4,3a,18) at ip_deliver+0x353 sys/netinet/ip_input.c:668 ip6_input_if(ffff800020eba798,ffff800020eba7a4,29,0,ffff800000b32800) at ip6_input_if+0x1116 ipv6_input(ffff800000b32800,fffffd8064389300) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d01,ffff800020ebaa98,48d1,2) at tun_dev_write+0x1fc sys/net/if_tun.c:868 spec_write(ffff800020eba8e0) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806e64b1a8,ffff800020ebaa98,11,fffffd807f7bfa20) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd8066e28dc8,ffff800020ebaa98,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff800020ebed80,f0,ffff800020ebaa98,0,ffff800020ebab80) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff800020ebed80,ffff800020ebab30,ffff800020ebab80) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020ebac00) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020ebac00) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1955187bb10, count: -17 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff800020eba100 rbx 0x17 rdx 0x4daa __ALIGN_SIZE+0x3daa rcx 0xffff800000ae9ac0 rax 0 r8 0x70 r9 0x5 r10 0xc6706ab42129e1ea r11 0xfc1ef141f299bff3 r12 0 r13 0xffff800020eba138 r14 0xfffffd8066dea3f8 r15 0xffff800000b51700 rip 0xffffffff816322fb rtrequest+0x59b cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020eba010 ss 0x10 rtrequest+0x59b: movb 0xe3(%r12),%al ddb{1}> show proc PROC (syz-executor.1) pid=20542 stat=onproc flags process=0 proc=4000000 pri=79, usrpri=79, nice=20 forw=0xffffffffffffffff, list=0xffff800020ebd520,0xffffffff82928bc8 process=0xffff800020df0010 user=0xffff800020eb5000, vmspace=0xfffffd807efff2e0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 90892 128582 6528 0 7 0 syz-executor.1 *90892 20542 6528 0 7 0x4000000 syz-executor.1 6597 469636 30596 0 2 0 syz-executor.0 6597 209737 30596 0 3 0x4000080 netio syz-executor.0 30596 434607 12541 0 3 0x82 nanosleep syz-executor.0 6528 89451 12541 0 3 0x82 nanosleep syz-executor.1 21509 99764 0 0 3 0x14280 nfsidl nfsio 90338 505085 0 0 3 0x14280 nfsidl nfsio 92979 390892 0 0 3 0x14280 nfsidl nfsio 6579 494444 0 0 3 0x14280 nfsidl nfsio 16353 40062 0 0 3 0x14280 nfsidl nfsio 43628 292111 0 0 3 0x14280 nfsidl nfsio 58934 419130 0 0 3 0x14280 nfsidl nfsio 35899 169694 0 0 3 0x14280 nfsidl nfsio 60321 523436 0 0 3 0x14280 nfsidl nfsio 406 406348 0 0 3 0x14280 nfsidl nfsio 14122 342918 0 0 3 0x14280 nfsidl nfsio 69901 232189 0 0 3 0x14280 nfsidl nfsio 67077 412120 0 0 3 0x14280 nfsidl nfsio 2453 34568 0 0 3 0x14280 nfsidl nfsio 46561 25205 0 0 3 0x14280 nfsidl nfsio 12453 484826 0 0 3 0x14280 nfsidl nfsio 63819 476997 0 0 3 0x14280 nfsidl nfsio 90448 87382 0 0 3 0x14280 nfsidl nfsio 67082 163703 0 0 3 0x14280 nfsidl nfsio 9322 113218 0 0 3 0x14280 nfsidl nfsio 24847 481393 0 0 3 0x14200 bored sosplice 12541 57617 34338 0 3 0x82 thrsleep syz-fuzzer 12541 138822 34338 0 3 0x4000082 thrsleep syz-fuzzer 12541 422963 34338 0 3 0x4000082 thrsleep syz-fuzzer 12541 507312 34338 0 3 0x4000082 thrsleep syz-fuzzer 12541 471354 34338 0 3 0x4000082 thrsleep syz-fuzzer 12541 290502 34338 0 3 0x4000082 thrsleep syz-fuzzer 12541 223519 34338 0 3 0x4000082 thrsleep syz-fuzzer 12541 447314 34338 0 3 0x4000082 thrsleep syz-fuzzer 12541 356005 34338 0 3 0x4000082 kqread syz-fuzzer 12541 1052 34338 0 3 0x4000082 thrsleep syz-fuzzer 34338 258255 94174 0 3 0x10008a pause ksh 94174 62251 69788 0 3 0x92 select sshd 58324 326476 1 0 3 0x100083 ttyin getty 69788 363825 1 0 3 0x80 select sshd 31544 191074 33461 74 3 0x100092 bpf pflogd 33461 2438 1 0 3 0x80 netio pflogd 67320 188285 53332 73 3 0x100090 kqread syslogd 53332 239294 1 0 3 0x100082 netio syslogd 98877 228502 1 77 3 0x100090 poll dhclient 16330 407262 1 0 3 0x80 poll dhclient 58407 472127 0 0 3 0x14200 bored smr 4972 193984 0 0 2 0x14200 zerothread 3586 374325 0 0 3 0x14200 aiodoned aiodoned 47804 479941 0 0 3 0x14200 syncer update 44901 331106 0 0 3 0x14200 cleaner cleaner 83697 106767 0 0 3 0x14200 reaper reaper 23159 341764 0 0 3 0x14200 pgdaemon pagedaemon 66679 515014 0 0 3 0x14200 bored crynlk 5165 439324 0 0 3 0x14200 bored crypto 3118 205789 0 0 3 0x40014200 acpi0 acpi0 27349 355603 0 0 3 0x40014200 idle1 73099 210544 0 0 3 0x14200 bored softnet 43822 216477 0 0 3 0x14200 bored systqmp 62688 501610 0 0 3 0x14200 bored systq 32125 465447 0 0 3 0x40014200 bored softclock 27720 147957 0 0 3 0x40014200 idle0 1 36444 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 90892 (syz-executor.1) thread 0xffff800020ebed80 (20542) exclusive rwlock netlock r = 0 (0xffffffff827a56b8) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 tun_dev_write+0x1f1 sys/net/if_tun.c:867 #2 spec_write+0xd4 sys/kern/spec_vnops.c:309 #3 VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 #4 vn_write+0x14e sys/kern/vfs_vnops.c:414 #5 dofilewritev+0x1b6 sys/kern/sys_generic.c:365 #6 sys_write+0x83 sys/kern/sys_generic.c:285 #7 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #7 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #8 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff8292f068) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 vn_write+0x42 sys/kern/vfs_vnops.c:399 #2 dofilewritev+0x1b6 sys/kern/sys_generic.c:365 #3 sys_write+0x83 sys/kern/sys_generic.c:285 #4 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #4 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #5 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9517 6430K 6986K 78643K 13156 0 pcb 13 8K 8K 78643K 119 0 rtable 109 14K 17K 78643K 1021 0 ifaddr 77 15K 15K 78643K 280 0 counters 43 33K 34K 78643K 79 0 ioctlops 0 0K 4K 78643K 1678 0 iov 1 12K 16K 78643K 87 0 mount 1 1K 1K 78643K 1 0 vnodes 1252 79K 79K 78643K 2329 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 24 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 41 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 6 17K 33K 78643K 1660 0 sigio 0 0K 0K 78643K 16 0 proc 63 63K 95K 78643K 1007 0 subproc 32 2K 4K 78643K 357 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 77 0 in_multi 73 4K 4K 78643K 286 0 ether_multi 1 0K 0K 78643K 14 0 mrt 0 0K 0K 78643K 11 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 73 334K 334K 78643K 73 0 exec 0 0K 1K 78643K 479 0 pfkey data 0 0K 0K 78643K 4 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 175 187K 188K 78643K 6113 0 UVM aobj 73 8K 8K 78643K 82 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 78 0 NDP 12 0K 0K 78643K 64 0 temp 136 3882K 3946K 78643K 37627 0 kqueue 3 4K 18K 78643K 40 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 arp 64 33 0 24 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 81 0 79 1 0 1 1 0 8 0 rtentry 112 198 0 161 2 0 2 2 0 8 0 unpcb 120 850 0 838 1 0 1 1 0 8 0 syncache 264 12 0 12 6 6 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 1529 0 1529 2 2 0 1 0 8 0 tcpcb 544 244 0 240 2 1 1 2 0 8 0 inpcb 296 1512 0 1505 10 9 1 2 0 8 0 rttmr 72 4 0 4 1 1 0 1 0 8 0 nd6 48 59 0 54 1 0 1 1 0 8 0 pkpcb 40 6 0 6 2 2 0 1 0 8 0 ppxss 1136 2 0 2 2 2 0 1 0 8 0 pffrag 232 7 0 7 4 4 0 1 0 482 0 pffrnode 88 7 0 7 4 4 0 1 0 8 0 pffrent 40 188 0 188 5 5 0 1 0 8 0 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 96 0 91 3 2 1 1 0 8 0 pfstitem 24 24 0 22 1 0 1 1 0 8 0 pfstkey 112 26 0 24 1 0 1 1 0 8 0 pfstate 328 25 0 23 2 1 1 2 0 8 0 pfrule 1360 48 0 38 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1044 0 903 20 10 10 17 0 8 0 art_table 32 1045 0 903 3 1 2 3 0 8 0 art_node 16 194 0 165 1 0 1 1 0 8 0 sysvmsgpl 40 19 0 10 1 0 1 1 0 8 0 semupl 112 3 0 3 2 2 0 1 0 8 0 semapl 112 29 0 19 1 0 1 1 0 8 0 shmpl 112 79 0 9 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 3668 0 2261 89 0 89 89 0 8 0 ffsino 272 3668 0 2261 96 1 95 95 0 8 0 nchpl 144 6194 0 4594 60 0 60 60 0 8 0 uvmvnodes 72 4498 0 0 82 0 82 82 0 8 0 vnodes 208 4498 0 0 237 0 237 237 0 8 0 namei 1024 21141 0 21141 13 12 1 1 0 8 1 percpumem 16 50 0 18 1 0 1 1 0 8 0 vcpupl 1984 15 0 0 2 0 2 2 0 8 0 vmpool 560 20 0 5 3 1 2 2 0 8 0 pfiaddrpl 120 27 0 24 3 2 1 1 0 8 0 scxspl 192 17255 0 17255 12 11 1 7 0 8 1 plimitpl 152 118 0 110 1 0 1 1 0 8 0 sigapl 424 1840 0 1787 10 3 7 7 0 8 1 futexpl 56 21795 0 21795 11 10 1 1 0 8 1 knotepl 112 328 0 309 1 0 1 1 0 8 0 kqueuepl 144 154 0 152 1 0 1 1 0 8 0 pipepl 304 338 0 328 4 3 1 2 0 8 0 fdescpl 496 1803 0 1786 3 0 3 3 0 8 0 filepl 152 12286 0 12183 10 5 5 6 0 8 0 lockfpl 104 570 0 569 1 0 1 1 0 8 0 lockfspl 48 245 0 244 1 0 1 1 0 8 0 sessionpl 112 37 0 26 1 0 1 1 0 8 0 pgrppl 48 55 0 44 1 0 1 1 0 8 0 ucredpl 96 3527 0 3518 1 0 1 1 0 8 0 zombiepl 144 1787 0 1787 5 4 1 1 0 8 1 processpl 992 1840 0 1787 10 3 7 8 0 8 0 procpl 624 4755 0 4691 9 3 6 6 0 8 0 srpgc 64 10 0 10 5 4 1 1 0 8 1 sosppl 128 11 0 11 6 6 0 1 0 8 0 sockpl 400 2457 0 2436 17 14 3 4 0 8 0 mcl64k 65536 8 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 9 0 0 2 0 2 2 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 283 0 0 27 1 26 27 0 8 0 mtagpl 96 79 0 0 2 0 2 2 0 8 0 mbufpl 256 555 0 0 27 1 26 26 0 8 0 bufpl 280 6295 0 134 441 0 441 441 0 8 0 anonpl 16 192827 0 176798 109 38 71 86 0 124 0 amapchunkpl 152 10790 0 10623 27 18 9 20 0 158 1 amappl16 192 7627 0 6669 84 36 48 58 0 8 0 amappl15 184 29 0 28 2 1 1 1 0 8 0 amappl14 176 127 0 122 1 0 1 1 0 8 0 amappl13 168 938 0 935 1 0 1 1 0 8 0 amappl12 160 517 0 513 1 0 1 1 0 8 0 amappl11 152 171 0 156 1 0 1 1 0 8 0 amappl10 144 42 0 36 1 0 1 1 0 8 0 amappl9 136 762 0 761 1 0 1 1 0 8 0 amappl8 128 939 0 895 2 0 2 2 0 8 0 amappl7 120 212 0 196 1 0 1 1 0 8 0 amappl6 112 42 0 35 2 1 1 1 0 8 0 amappl5 104 1388 0 1371 1 0 1 1 0 8 0 amappl4 96 1230 0 1202 1 0 1 1 0 8 0 amappl3 88 433 0 428 1 0 1 1 0 8 0 amappl2 80 13006 0 12917 2 0 2 2 0 8 0 amappl1 72 62045 0 61577 26 15 11 18 0 8 1 amappl 80 5219 0 5159 2 0 2 2 0 84 0 dma4096 4096 1 0 1 1 1 0 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 64 81 0 9 2 0 2 2 0 8 0 uaddrrnd 24 1823 0 1791 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1823 0 1791 1 0 1 1 0 8 0 vmmpekpl 168 15899 0 15848 3 0 3 3 0 8 0 vmmpepl 168 251281 0 248994 291 157 134 149 0 357 32 vmsppl 368 1822 0 1791 4 0 4 4 0 8 1 pdppl 4096 3653 0 3597 14 6 8 8 0 8 0 pvpl 32 582703 0 563433 256 88 168 201 0 265 0 pmappl 232 1822 0 1791 4 2 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 331 0 52 10 1 9 9 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82722ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __sanitizer_cov_trace_const_cmp1(0,ff) at __sanitizer_cov_trace_const_cmp1+0x1e kd_curproc sys/dev/kcov.c:397 [inline] __sanitizer_cov_trace_const_cmp1(0,ff) at __sanitizer_cov_trace_const_cmp1+0x1e trace_cmp sys/dev/kcov.c:104 [inline] __sanitizer_cov_trace_const_cmp1(0,ff) at __sanitizer_cov_trace_const_cmp1+0x1e sys/dev/kcov.c:149 pvclock_get_timecount(ffffffff827acfb8) at pvclock_get_timecount+0xa9 sys/dev/pv/pvclock.c:228 nanotime(ffff800022dc1478) at nanotime+0x6f tc_delta sys/kern/kern_tc.c:131 [inline] nanotime(ffff800022dc1478) at nanotime+0x6f bintime sys/kern/kern_tc.c:266 [inline] nanotime(ffff800022dc1478) at nanotime+0x6f sys/kern/kern_tc.c:277 clock_gettime(ffff800020ebd520,0,ffff800022dc1478) at clock_gettime+0x9d sys/kern/kern_time.c:116 sys_clock_gettime(ffff800020ebd520,ffff800022dc14e0,ffff800022dc1530) at sys_clock_gettime+0x4c sys/kern/kern_time.c:165 syscall(ffff800022dc15b0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022dc15b0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbc920, count: -10 ddb{0}> machine ddbcpu 1 Stopped at rtrequest+0x59b: movb 0xe3(%r12),%al ddb{1}> trace rtrequest(1,ffff800020eba138,4,ffff800020eba1d8,0) at rtrequest+0x59b sys/net/route.c:884 icmp6_mtudisc_clone(ffff800020eba230,0) at icmp6_mtudisc_clone+0x178 sys/netinet6/icmp6.c:1819 icmp6_mtudisc_update(ffff800020eba370,0) at icmp6_mtudisc_update+0x19f sys/netinet6/icmp6.c:1018 udp6_ctlinput(5,ffff800020eba3c8,0,ffff800020eba370) at udp6_ctlinput+0x443 icmp6_notify_error(fffffd8064389300,28,38,5) at icmp6_notify_error+0xa1e sys/netinet6/icmp6.c:963 icmp6_input(ffff800020eba798,ffff800020eba7a4,3a,18) at icmp6_input+0xa20 sys/netinet6/icmp6.c:745 ip_deliver(ffff800020eba798,ffff800020eba7a4,3a,18) at ip_deliver+0x353 sys/netinet/ip_input.c:668 ip6_input_if(ffff800020eba798,ffff800020eba7a4,29,0,ffff800000b32800) at ip6_input_if+0x1116 ipv6_input(ffff800000b32800,fffffd8064389300) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d01,ffff800020ebaa98,48d1,2) at tun_dev_write+0x1fc sys/net/if_tun.c:868 spec_write(ffff800020eba8e0) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806e64b1a8,ffff800020ebaa98,11,fffffd807f7bfa20) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd8066e28dc8,ffff800020ebaa98,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff800020ebed80,f0,ffff800020ebaa98,0,ffff800020ebab80) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff800020ebed80,ffff800020ebab30,ffff800020ebab80) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020ebac00) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020ebac00) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1955187bb10, count: -17