uvm_fault(0xfffffd8073f3f458, 0x18, 0, 1) -> e kernel: page fault trap, code=0 Stopped at mtx_enter+0x6e: movq 0(%r14),%rax TID PID UID PRFLAGS PFLAGS CPU COMMAND mtx_enter(18) at mtx_enter+0x6e sys/kern/kern_lock.c:335 clockintr_unbind(ffff800001503730,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff80000149fc80) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:589 dtclose(11e5f,81,2000,ffff80002a7bc2b0) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80002a7bc2b0) at dtclose+0xd9 sys/dev/dt/dt_dev.c:239 spec_close(ffff800039d14f40) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80680190f0,81,fffffd8007bfd4e0,ffff80002a7bc2b0) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80683508f8,ffff80002a7bc2b0) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80683508f8,ffff80002a7bc2b0) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd80683508f8,ffff80002a7bc2b0) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd80683508f8,ffff80002a7bc2b0) at closef+0x190 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a7bc2b0) at fdfree+0x115 sys/kern/kern_descrip.c:1195 exit1(ffff80002a7bc2b0,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a7bc2b0,ffff800039d152a0,ffff800039d151f0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800039d152a0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800039d152a0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x749258f65020, count: 1 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> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic *cpu0: uvm_fault(0xfffffd8073f3f458, 0x18, 0, 1) -> e ddb> trace mtx_enter(18) at mtx_enter+0x6e sys/kern/kern_lock.c:335 clockintr_unbind(ffff800001503730,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff80000149fc80) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:589 dtclose(11e5f,81,2000,ffff80002a7bc2b0) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80002a7bc2b0) at dtclose+0xd9 sys/dev/dt/dt_dev.c:239 spec_close(ffff800039d14f40) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80680190f0,81,fffffd8007bfd4e0,ffff80002a7bc2b0) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80683508f8,ffff80002a7bc2b0) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80683508f8,ffff80002a7bc2b0) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd80683508f8,ffff80002a7bc2b0) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd80683508f8,ffff80002a7bc2b0) at closef+0x190 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a7bc2b0) at fdfree+0x115 sys/kern/kern_descrip.c:1195 exit1(ffff80002a7bc2b0,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a7bc2b0,ffff800039d152a0,ffff800039d151f0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800039d152a0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800039d152a0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x749258f65020, count: -14 ddb> show registers rdi 0 rsi 0 rbp 0xffff800039d14df0 rbx 0 rdx 0 rcx 0xffff80002a7bc2b0 rax 0xffff80002a7bc200 r8 0 r9 0 r10 0x8b98a9d2b6140f9c r11 0xc4085ec9631dfcac r12 0x1 r13 0 r14 0x18 r15 0 rip 0xffffffff81a14c4e mtx_enter+0x6e cs 0x8 rflags 0x10297 __ALIGN_SIZE+0xf297 rsp 0xffff800039d14dc0 ss 0x10 mtx_enter+0x6e: movq 0(%r14),%rax ddb> show proc PROC (syz-executor) tid=346350 pid=23464 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=83, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80002a7bc2b0 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003c9662c8,0xffff80002a7bd4e8 process=0xffff8000ffff8d98 user=0xffff800039d10000, vmspace=0xfffffd8073f3f458 estcpu=33, cpticks=4, pctcpu=0.2, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 68346 8410 78449 0 2 0 syz-executor 68346 229373 78449 0 3 0x4000080 fsleep syz-executor 96773 443481 80613 0 2 0 syz-executor 96773 22728 80613 0 2 0x4000000 syz-executor 46920 174971 73009 0 2 0 syz-executor 46920 522343 73009 0 2 0x4000000 syz-executor 46920 12897 73009 0 3 0x4000080 fsleep syz-executor 46920 210555 73009 0 3 0x4000080 fsleep syz-executor 71618 299841 14150 0 2 0 syz-executor 71618 302574 14150 0 3 0x4000080 fsleep syz-executor 71618 288587 14150 0 3 0x4000080 fsleep syz-executor 71952 296467 25646 0 2 0 syz-executor 71952 54082 25646 0 3 0x4000080 fsleep syz-executor 71952 355309 25646 0 3 0x4000080 fsleep syz-executor 71952 87194 25646 0 3 0x4000080 fsleep syz-executor 94879 442618 85342 0 2 0 syz-executor 94879 23287 85342 0 3 0x4000080 ttyout syz-executor 94879 208844 85342 0 3 0x4000080 ttyin syz-executor 17744 371802 97905 0 2 0 syz-executor 17744 377330 97905 0 3 0x4000080 fsleep syz-executor 25646 408644 29327 0 3 0x82 nanoslp syz-executor 98964 275850 1 0 3 0x100083 ttyin getty 73009 3008 29327 0 2 0x3 syz-executor 78449 258037 29327 0 2 0x3 syz-executor 85342 78200 29327 0 3 0x82 nanoslp syz-executor 38111 454228 29327 0 3 0x82 nanoslp syz-executor 97905 174685 29327 0 3 0x82 nanoslp syz-executor 80613 517777 29327 0 2 0x3 syz-executor 14150 384649 29327 0 3 0x82 nanoslp syz-executor 29327 134341 46187 0 3 0x82 kqread syz-executor 46187 231606 75430 0 3 0x10008a sigsusp ksh 75430 68459 46759 0 3 0x98 kqread sshd-session 46759 383247 1997 0 3 0x92 kqread sshd-session 1997 319336 1 0 3 0x88 kqread sshd 37585 68542 46587 73 3 0x1100090 kqread syslogd 46587 516719 1 0 3 0x100082 sbwait syslogd 62491 71402 1 0 3 0x100080 kqread resolvd 4685 49665 74215 77 3 0x100092 kqread dhcpleased 14476 129923 74215 77 3 0x100092 kqread dhcpleased 74215 244920 1 0 3 0x80 kqread dhcpleased 79871 245299 0 0 3 0x14200 bored smr 19021 341442 0 0 2 0x14200 zerothread 26414 361514 0 0 3 0x14200 aiodoned aiodoned 80838 502055 0 0 3 0x14200 syncer update 2493 290726 0 0 3 0x14200 cleaner cleaner 37360 87748 0 0 2 0x14200 reaper 92549 174944 0 0 3 0x14200 pgdaemon pagedaemon 15647 148938 0 0 3 0x14200 bored viomb 60763 157437 0 0 3 0x40014200 acpi0 acpi0 1558 174443 0 0 3 0x14200 bored softnet0 56369 312895 0 0 3 0x14200 bored systqmp 55306 332597 0 0 3 0x14200 bored systq 30126 19010 0 0 3 0x40014200 tmoslp softclock 37256 57811 0 0 3 0x40014200 idle0 1 492731 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10194 11144K 12353K 166960K 16920 0 pcb 17 18K 20K 166960K 689 0 rtable 205 10K 11K 166960K 871 0 pf 35 14K 18K 166960K 278 0 ifaddr 36 6K 8K 166960K 163 0 ifgroup 49 2K 2K 166960K 257 0 sysctl 4 1K 9K 166960K 24 0 counters 33 17K 18K 166960K 129 0 ioctlops 0 0K 4K 166960K 736 0 iov 0 0K 28K 166960K 322 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1582 99K 100K 166960K 4973 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 27 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 277 0 dirhash 6 1K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 240K 166960K 2488 0 sigio 0 0K 0K 166960K 53 0 proc 61 59K 116K 166960K 910 0 subproc 72 4K 4K 166960K 126 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 371 0 in_multi 72 5K 7K 166960K 258 0 ether_multi 1 0K 0K 166960K 27 0 mrt 1 0K 0K 166960K 22 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 109 493K 493K 166960K 109 0 exec 0 0K 1K 166960K 791 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 252 148K 176K 166960K 24181 0 UVM aobj 138 24K 24K 166960K 146 0 pinsyscall 39 78K 95K 166960K 3697 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 279 0 NDP 11 0K 2K 166960K 113 0 temp 76 8672K 8748K 166960K 84597 0 kqueue 14 22K 32K 166960K 503 0 SYN cache 2 8K 16K 166960K 3 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 352 0 349 3 2 1 3 0 8 0 rtentry 136 234 0 162 4 0 4 4 0 8 0 unpcb 144 2390 0 2375 13 9 4 6 0 8 3 syncache 336 10 0 10 3 2 1 1 0 8 1 tcpqe 32 6 0 6 3 2 1 1 0 8 1 tcpcb 736 1058 0 1050 14 7 7 7 0 8 6 arp 96 38 0 23 1 0 1 1 0 8 0 ipq 40 9 0 8 1 0 1 1 0 8 0 ipqe 40 13 0 12 1 0 1 1 0 8 0 inpcb 328 2918 0 2904 30 23 7 15 0 8 5 ip6q 72 30 0 30 1 0 1 1 0 8 1 ip6af 40 54 0 54 1 0 1 1 0 8 1 nd6 112 52 0 36 1 0 1 1 0 8 0 pkpcb 40 17 0 17 3 2 1 1 0 8 1 kcovpl 48 14 0 6 1 0 1 1 0 8 0 ppxss 1072 70 0 69 1 0 1 1 0 8 0 pppxif 1384 9 0 9 3 2 1 1 0 8 1 pfrktable 1344 7 0 7 3 3 0 1 0 8 0 pfstitem 24 4 0 0 1 0 1 1 0 8 0 pfstkey 128 7 0 3 2 1 1 1 0 8 0 pfstate 384 4 0 2 2 1 1 1 0 8 0 pfrule 1344 2 0 2 1 1 0 1 0 8 0 rttmr 136 4 0 4 3 2 1 1 0 8 1 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 1075 0 755 32 7 25 30 0 8 4 art_table 40 1079 0 755 5 0 5 5 0 8 0 art_node 32 232 0 167 1 0 1 1 0 8 0 sysvmsgpl 40 53 0 15 1 0 1 1 0 8 0 semupl 112 4 0 4 2 2 0 1 0 8 0 semapl 112 260 0 250 1 0 1 1 0 8 0 shmpl 112 135 0 7 4 0 4 4 0 8 0 dirhash 1024 19 0 15 3 1 2 3 0 8 0 dino2pl 256 6307 0 4802 95 0 95 95 0 8 0 ffsino 256 6307 0 4802 95 0 95 95 0 8 0 nchpl 144 9929 0 8221 64 0 64 64 0 8 0 rtmask 32 15 0 15 2 2 0 1 0 8 0 vnodes 216 7790 0 0 433 0 433 433 0 8 0 namei 1024 37896 0 37896 2 1 1 2 0 8 1 vcpupl 3904 8 0 1 1 0 1 1 0 8 0 vmpool 800 8 0 1 1 0 1 1 0 8 0 kstatmem 264 164 0 142 4 2 2 3 0 8 0 scsiplug 72 16 0 16 4 3 1 1 0 8 1 scxspl 216 28567 0 28567 18 16 2 8 1 8 2 plimitpl 152 737 0 720 1 0 1 1 0 8 0 sigapl 424 2764 0 2721 9 3 6 8 0 8 0 knotepl 120 137039 0 136983 63 51 12 17 0 8 8 kqueuepl 184 1095 0 1084 7 3 4 4 0 8 3 pipepl 304 635 0 608 13 5 8 8 0 8 5 fdescpl 448 2721 0 2691 5 1 4 5 0 8 0 filepl 120 22970 0 22746 32 18 14 17 0 8 4 lockfpl 104 1324 0 1321 4 2 2 2 0 8 1 lockfspl 48 467 0 464 1 0 1 1 0 8 0 sessionpl 144 29 0 21 1 0 1 1 0 8 0 pgrppl 48 73 0 57 1 0 1 1 0 8 0 ucredpl 104 4433 0 4422 1 0 1 1 0 8 0 zombiepl 144 3516 0 3515 1 0 1 1 0 8 0 processpl 1152 2764 0 2721 5 1 4 5 0 8 0 procpl 664 6652 0 6595 9 3 6 7 0 8 0 sosppl 176 6 0 6 2 2 0 1 0 8 0 sockpl 552 5754 0 5722 35 27 8 19 0 8 5 mcl64k 65536 324 0 324 4 3 1 1 0 8 1 mcl16k 16384 7 0 7 4 3 1 1 0 8 1 mcl12k 12288 3 0 3 2 1 1 1 0 8 1 mcl9k 9216 8 0 8 4 3 1 1 0 8 1 mcl8k 8192 101 0 101 4 3 1 1 0 8 1 mcl4k 4096 5757 0 5706 16 8 8 13 0 8 1 mcl2k2 2112 1 0 1 1 1 0 1 0 8 0 mcl2k 2048 3438 0 3434 12 9 3 8 0 8 1 mtagpl 96 88 0 49 1 0 1 1 0 8 0 mbufpl 256 32199 0 32010 142 122 20 79 0 8 2 bufpl 280 9689 0 3468 445 0 445 445 0 8 0 anonpl 24 398459 0 393475 115 60 55 57 0 187 20 amapchunkpl 152 96766 0 96161 67 38 29 37 0 158 5 amappl16 200 7550 0 7482 79 64 15 17 0 8 8 amappl15 192 25 0 25 2 2 0 1 0 8 0 amappl14 184 5 0 5 2 1 1 1 0 8 1 amappl13 176 484 0 483 1 0 1 1 0 8 0 amappl12 168 3102 0 3063 2 0 2 2 0 8 0 amappl11 160 6 0 5 1 0 1 1 0 8 0 amappl10 152 44 0 34 1 0 1 1 0 8 0 amappl9 144 246 0 246 1 1 0 1 0 8 0 amappl8 136 24 0 21 1 0 1 1 0 8 0 amappl7 128 123 0 122 1 0 1 1 0 8 0 amappl6 120 345 0 333 1 0 1 1 0 8 0 amappl5 112 72 0 64 1 0 1 1 0 8 0 amappl4 104 510 0 485 1 0 1 1 0 8 0 amappl3 96 16900 0 16782 5 1 4 4 0 8 0 amappl2 88 575 0 519 2 0 2 2 0 8 0 amappl1 80 18722 0 18174 13 1 12 13 0 8 0 amappl 88 22980 0 22796 5 0 5 5 0 92 0 uvmvnodes 80 149 0 0 4 0 4 4 0 8 0 dma32768 32768 1 0 1 1 0 1 1 0 8 1 dma8192 8192 1 0 1 1 1 0 1 0 8 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 42 0 42 2 2 0 1 0 8 0 dma128 128 260 0 260 4 3 1 1 0 8 1 dma64 64 8 0 8 2 2 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 72 145 0 8 3 0 3 3 0 8 0 uaddrrnd 24 2721 0 2691 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2721 0 2691 1 0 1 1 0 8 0 vmmpekpl 168 23433 0 23390 3 0 3 3 0 8 0 vmmpepl 168 173501 0 171578 114 21 93 93 0 357 8 vmsppl 368 2720 0 2691 4 1 3 4 0 8 0 rwobjpl 40 44001 0 42799 18 3 15 15 0 8 0 pdppl 4096 5465 0 5391 136 62 74 83 0 8 0 pvpl 32 1200371 0 1189525 243 117 126 140 0 265 29 pmappl 216 2728 0 2692 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 581 0 234 12 0 12 12 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace mtx_enter(18) at mtx_enter+0x6e sys/kern/kern_lock.c:335 clockintr_unbind(ffff800001503730,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff80000149fc80) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:589 dtclose(11e5f,81,2000,ffff80002a7bc2b0) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80002a7bc2b0) at dtclose+0xd9 sys/dev/dt/dt_dev.c:239 spec_close(ffff800039d14f40) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80680190f0,81,fffffd8007bfd4e0,ffff80002a7bc2b0) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80683508f8,ffff80002a7bc2b0) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80683508f8,ffff80002a7bc2b0) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd80683508f8,ffff80002a7bc2b0) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd80683508f8,ffff80002a7bc2b0) at closef+0x190 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a7bc2b0) at fdfree+0x115 sys/kern/kern_descrip.c:1195 exit1(ffff80002a7bc2b0,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a7bc2b0,ffff800039d152a0,ffff800039d151f0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800039d152a0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800039d152a0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x749258f65020, count: -14 ddb> machine ddbcpu 1 No such command ddb> trace mtx_enter(18) at mtx_enter+0x6e sys/kern/kern_lock.c:335 clockintr_unbind(ffff800001503730,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff80000149fc80) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:589 dtclose(11e5f,81,2000,ffff80002a7bc2b0) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80002a7bc2b0) at dtclose+0xd9 sys/dev/dt/dt_dev.c:239 spec_close(ffff800039d14f40) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80680190f0,81,fffffd8007bfd4e0,ffff80002a7bc2b0) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80683508f8,ffff80002a7bc2b0) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80683508f8,ffff80002a7bc2b0) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd80683508f8,ffff80002a7bc2b0) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd80683508f8,ffff80002a7bc2b0) at closef+0x190 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a7bc2b0) at fdfree+0x115 sys/kern/kern_descrip.c:1195 exit1(ffff80002a7bc2b0,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a7bc2b0,ffff800039d152a0,ffff800039d151f0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800039d152a0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800039d152a0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x749258f65020, count: -14