uvm_fault(0xffffffff83933e98, 0xffff800029ef6000, 0, 2) -> e kernel: page fault trap, code=2 Stopped at kcov_remote_enter+0x122: movq $0,0(%rcx) TID PID UID PRFLAGS PFLAGS CPU COMMAND *259487 30040 0 0 0x4000000 0 syz-executor kcov_remote_enter(0,ffff80002a77e890) at kcov_remote_enter+0x122 sys/dev/kcov.c:670 timeout_run(ffffffff83871810,ffff80002a7a0870) at timeout_run+0xdf sys/kern/kern_timeout.c:696 softclock_process_tick_timeout(ffff80002a7a0870,0) at softclock_process_tick_timeout+0x230 sys/kern/kern_timeout.c:756 softclock(0) at softclock+0x152 sys/kern/kern_timeout.c:788 softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87 dosoftint(0) at dosoftint+0x48 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 writedisklabel(d02,ffffffff8192ed30,ffff800000039000) at writedisklabel+0x1b8 sys/arch/amd64/amd64/disksubr.c:158 sdioctl(d02,84946467,ffff8000015e9800,3,ffff80003c8fe030) at sdioctl+0x959 sys/scsi/sd.c:921 VOP_IOCTL(fffffd806cc9dcb0,84946467,ffff8000015e9800,3,fffffd8007ffd9c0,ffff80003c8fe030) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd80687c3350,84946467,ffff8000015e9800,ffff80003c8fe030) at vn_ioctl+0xea sys/kern/vfs_vnops.c:531 sys_ioctl(ffff80003c8fe030,ffff80002ecc3450,ffff80002ecc33a0) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80002ecc3450) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002ecc3450) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2e957e3edc0, 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(0xffffffff83933e98, 0xffff800029ef6000, 0, 2) -> e ddb> trace kcov_remote_enter(0,ffff80002a77e890) at kcov_remote_enter+0x122 sys/dev/kcov.c:670 timeout_run(ffffffff83871810,ffff80002a7a0870) at timeout_run+0xdf sys/kern/kern_timeout.c:696 softclock_process_tick_timeout(ffff80002a7a0870,0) at softclock_process_tick_timeout+0x230 sys/kern/kern_timeout.c:756 softclock(0) at softclock+0x152 sys/kern/kern_timeout.c:788 softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87 dosoftint(0) at dosoftint+0x48 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 writedisklabel(d02,ffffffff8192ed30,ffff800000039000) at writedisklabel+0x1b8 sys/arch/amd64/amd64/disksubr.c:158 sdioctl(d02,84946467,ffff8000015e9800,3,ffff80003c8fe030) at sdioctl+0x959 sys/scsi/sd.c:921 VOP_IOCTL(fffffd806cc9dcb0,84946467,ffff8000015e9800,3,fffffd8007ffd9c0,ffff80003c8fe030) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd80687c3350,84946467,ffff8000015e9800,ffff80003c8fe030) at vn_ioctl+0xea sys/kern/vfs_vnops.c:531 sys_ioctl(ffff80003c8fe030,ffff80002ecc3450,ffff80002ecc33a0) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80002ecc3450) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002ecc3450) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2e957e3edc0, count: -14 ddb> show registers rdi 0xffffffff rsi 0xffff800000c16c00 rbp 0xffff80002ecc2dc0 rbx 0xffff80002a77e890 rdx 0xffff80003c8fe030 rcx 0xffff800029ef6000 rax 0xfffffd806cd01e40 r8 0 r9 0x201 r10 0x1e7a189e3800eead r11 0xf5ebd13c6410e691 r12 0xffffffff81c95d70 endtsleep r13 0xffff80002a7a07d8 r14 0xffff80002a77e890 r15 0 rip 0xffffffff82ce8ac2 kcov_remote_enter+0x122 cs 0x8 rflags 0x10297 __ALIGN_SIZE+0xf297 rsp 0xffff80002ecc2da0 ss 0x10 kcov_remote_enter+0x122: movq $0,0(%rcx) ddb> show proc PROC (syz-executor) tid=259487 pid=30040 tcnt=4 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c8ffa20,0xffff80003c8fe2d8 process=0xffff8000ffff9b20 user=0xffff80002ecbe000, vmspace=0xfffffd806dacee78 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=0, intr=1 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 43562 474748 40073 0 2 0 syz-executor 43562 116328 40073 0 3 0x4000080 fsleep syz-executor 30040 112471 9598 0 2 0 syz-executor *30040 259487 9598 0 7 0x4000000 syz-executor 30040 92893 9598 0 3 0x4000080 fsleep syz-executor 30040 46889 9598 0 3 0x4000080 fsleep syz-executor 36469 318634 24782 0 2 0 syz-executor 36469 307266 24782 0 3 0x4000080 fsleep syz-executor 49754 483451 51952 0 2 0 syz-executor 49754 187800 51952 0 3 0x4000080 tunread syz-executor 80917 289727 32663 60929 3 0x90 nanoslp syz-executor 80917 306798 32663 60929 3 0x4000090 msgwait syz-executor 80917 457169 32663 60929 3 0x4000090 fsleep syz-executor 48291 271280 0 0 3 0x14200 acct acct 9249 230935 66540 0 3 0x80 nanoslp syz-executor 9249 208836 66540 0 3 0x4000080 msgwait syz-executor 9249 396701 66540 0 3 0x4000080 fsleep syz-executor 68385 502881 0 0 3 0x14280 nfsidl nfsio 4931 403637 0 0 3 0x14280 nfsidl nfsio 95111 396357 0 0 3 0x14280 nfsidl nfsio 22506 305359 0 0 3 0x14280 nfsidl nfsio 36221 456663 0 0 3 0x14280 nfsidl nfsio 72372 220038 0 0 3 0x14280 nfsidl nfsio 87540 438969 0 0 3 0x14280 nfsidl nfsio 37890 262045 0 0 3 0x14280 nfsidl nfsio 43621 21730 0 0 3 0x14280 nfsidl nfsio 67169 173527 0 0 3 0x14280 nfsidl nfsio 32203 146508 0 0 3 0x14280 nfsidl nfsio 95540 371610 0 0 3 0x14280 nfsidl nfsio 49795 275485 0 0 3 0x14280 nfsidl nfsio 2732 425472 0 0 3 0x14280 nfsidl nfsio 55040 332940 0 0 3 0x14280 nfsidl nfsio 19533 509835 0 0 3 0x14280 nfsidl nfsio 99528 165748 0 0 3 0x14280 nfsidl nfsio 827 457597 0 0 3 0x14280 nfsidl nfsio 17272 28218 0 0 3 0x14280 nfsidl nfsio 73755 245817 0 0 3 0x14280 nfsidl nfsio 9598 307276 52689 0 3 0x82 nanoslp syz-executor 60914 337255 52689 0 2 0x2 syz-executor 82298 239425 52689 0 3 0x82 nanoslp syz-executor 66540 164256 52689 0 3 0x82 nanoslp syz-executor 24782 31169 52689 0 3 0x82 nanoslp syz-executor 40073 327981 52689 0 3 0x82 nanoslp syz-executor 32663 206352 52689 0 2 0x2 syz-executor 51952 472348 52689 0 3 0x82 nanoslp syz-executor 52689 250883 38360 0 3 0x82 kqread syz-executor 38360 356201 77225 0 3 0x10008a sigsusp ksh 77225 517533 36563 0 3 0x98 kqread sshd-session 36563 128162 44250 0 3 0x92 kqread sshd-session 43285 408639 1 0 3 0x100083 ttyin getty 44250 131966 1 0 3 0x88 kqread sshd 78219 219339 18455 73 3 0x1100090 kqread syslogd 18455 122091 1 0 3 0x100082 sbwait syslogd 35579 110610 1 0 3 0x100080 kqread resolvd 87157 359022 10726 77 3 0x100092 kqread dhcpleased 66673 82706 10726 77 3 0x100092 kqread dhcpleased 10726 426352 1 0 3 0x80 kqread dhcpleased 13646 333881 0 0 3 0x14200 bored smr 53410 152936 0 0 2 0x14200 zerothread 98399 307270 0 0 3 0x14200 aiodoned aiodoned 45766 430211 0 0 3 0x14200 syncer update 55081 269196 0 0 3 0x14200 cleaner cleaner 58156 362863 0 0 3 0x14200 reaper reaper 41067 314429 0 0 3 0x14200 pgdaemon pagedaemon 68477 339043 0 0 3 0x14200 bored viomb 97958 208882 0 0 3 0x40014200 acpi0 acpi0 38599 10976 0 0 2 0x14200 softnet0 24193 427747 0 0 3 0x14200 bored systqmp 87906 133690 0 0 3 0x14200 bored systq 66304 222820 0 0 3 0x40014200 tmoslp softclock 10969 495309 0 0 3 0x40014200 idle0 1 465919 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 11129 12413K 12416K 166960K 12788 0 pcb 17 14K 15K 166960K 137 0 rtable 208 9K 10K 166960K 494 0 pf 40 15K 18K 166960K 80 0 ifaddr 40 6K 7K 166960K 61 0 ifgroup 55 2K 2K 166960K 83 0 sysctl 4 1K 9K 166960K 12 0 counters 34 17K 18K 166960K 44 0 ioctlops 1 2K 4K 166960K 96 0 iov 0 0K 16K 166960K 15 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1363 86K 86K 166960K 1756 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 12 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 13 0 dirhash 12 2K 2K 166960K 24 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 97K 166960K 486 0 sigio 0 0K 0K 166960K 3 0 proc 60 59K 83K 166960K 549 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 234 0 in_multi 90 6K 7K 166960K 124 0 ether_multi 1 0K 0K 166960K 2 0 mrt 0 0K 0K 166960K 16 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 405 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 3 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 215 150K 168K 166960K 6184 0 UVM aobj 16 4K 4K 166960K 17 0 pinsyscall 38 76K 94K 166960K 1614 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 12 0 NDP 12 0K 2K 166960K 36 0 temp 49 9069K 9141K 166960K 6115 0 kqueue 14 22K 32K 166960K 106 0 SYN cache 2 16K 16K 166960K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 64 0 60 1 0 1 1 0 8 0 rtentry 136 122 0 36 4 0 4 4 0 8 0 unpcb 144 693 0 676 4 0 4 4 0 8 3 syncache 336 8 0 8 1 0 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 736 302 0 295 7 0 7 7 0 8 6 arp 96 19 0 5 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 1 0 0 1 0 1 1 0 8 0 inpcb 328 644 0 633 9 0 9 9 0 8 7 ip6q 72 20 0 16 1 0 1 1 0 8 0 ip6af 40 38 0 32 1 0 1 1 0 8 0 nd6 112 25 0 3 1 0 1 1 0 8 0 pkpcb 40 5 0 5 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 5 0 5 1 0 1 1 0 8 1 pppxif 1416 2 0 2 1 0 1 1 0 8 1 pfstscr 40 2 0 2 1 0 1 1 0 8 1 pfrktable 1344 3 0 1 1 0 1 1 0 8 0 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pftag 88 3 0 0 1 0 1 1 0 8 0 pfqueue 320 2 0 1 1 0 1 1 0 8 0 pfstkey 128 4 0 4 1 0 1 1 0 8 1 pfstate 384 2 0 2 1 0 1 1 0 8 1 pfrule 1360 8 0 6 1 0 1 1 0 8 0 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 526 0 130 31 0 31 31 0 8 3 art_table 40 527 0 130 5 0 5 5 0 8 0 art_node 32 122 0 45 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 5 1 0 1 1 0 8 0 semupl 112 2 0 2 1 0 1 1 0 8 1 semapl 112 11 0 1 1 0 1 1 0 8 0 shmpl 112 14 0 1 1 0 1 1 0 8 0 dirhash 1024 25 0 8 3 0 3 3 0 8 0 dino2pl 256 2265 0 810 92 0 92 92 0 8 0 ffsino 256 2265 0 810 92 0 92 92 0 8 0 nchpl 144 2961 0 1263 64 0 64 64 0 8 0 rtmask 32 1 0 1 1 0 1 1 0 8 1 vnodes 216 2595 0 0 145 0 145 145 0 8 0 namei 1024 10131 0 10130 2 0 2 2 0 8 1 pfiaddrpl 120 1 0 0 1 0 1 1 0 8 0 kstatmem 264 38 0 14 2 0 2 2 0 8 0 scsiplug 72 2 0 2 1 0 1 1 0 8 1 scxspl 216 16625 0 16625 3 0 3 3 1 8 3 plimitpl 152 110 0 94 1 0 1 1 0 8 0 sigapl 424 808 0 745 8 0 8 8 0 8 0 knotepl 120 25579 0 25530 10 0 10 10 0 8 7 kqueuepl 184 236 0 226 4 0 4 4 0 8 3 pipepl 304 154 0 127 3 0 3 3 0 8 0 fdescpl 448 773 0 744 5 0 5 5 0 8 1 filepl 120 4554 0 4270 11 0 11 11 0 8 2 lockfpl 104 276 0 271 2 0 2 2 0 8 1 lockfspl 48 132 0 127 1 0 1 1 0 8 0 sessionpl 144 34 0 26 1 0 1 1 0 8 0 pgrppl 48 42 0 26 1 0 1 1 0 8 0 ucredpl 104 580 0 567 1 0 1 1 0 8 0 zombiepl 144 746 0 745 1 0 1 1 0 8 0 processpl 1152 808 0 745 5 0 5 5 0 8 0 procpl 664 1382 0 1309 7 0 7 7 0 8 0 sosppl 176 2 0 2 1 0 1 1 0 8 1 sockpl 552 1458 0 1426 10 0 10 10 0 8 7 mcl64k 65536 90 0 87 1 0 1 1 0 8 0 mcl16k 16384 5 0 5 1 0 1 1 0 8 1 mcl12k 12288 2 0 2 1 0 1 1 0 8 1 mcl8k 8192 9 0 9 1 0 1 1 0 8 1 mcl4k 4096 2978 0 2926 13 0 13 13 0 8 6 mcl2k 2048 648 0 644 1 0 1 1 0 8 0 mtagpl 96 11 0 6 1 0 1 1 0 8 0 mbufpl 256 9148 0 8981 19 0 19 19 0 8 5 bufpl 280 6680 0 466 444 0 444 444 0 8 0 anonpl 24 161424 0 158240 71 0 71 71 0 187 36 amapchunkpl 152 19552 0 19109 28 0 28 28 0 158 9 amappl16 200 3725 0 3689 40 25 15 28 0 8 8 amappl15 192 7 0 7 1 0 1 1 0 8 1 amappl14 184 410 0 409 1 0 1 1 0 8 0 amappl13 176 126 0 116 1 0 1 1 0 8 0 amappl12 168 1014 0 986 2 0 2 2 0 8 0 amappl11 160 3 0 3 1 0 1 1 0 8 1 amappl10 152 61 0 51 1 0 1 1 0 8 0 amappl9 144 346 0 346 1 0 1 1 0 8 1 amappl8 136 104 0 103 1 0 1 1 0 8 0 amappl7 128 148 0 136 1 0 1 1 0 8 0 amappl6 120 151 0 150 1 0 1 1 0 8 0 amappl5 112 105 0 97 1 0 1 1 0 8 0 amappl4 104 280 0 264 1 0 1 1 0 8 0 amappl3 96 3670 0 3568 4 0 4 4 0 8 0 amappl2 88 571 0 518 2 0 2 2 0 8 0 amappl1 80 12543 0 11984 16 0 16 16 0 8 3 amappl 88 5389 0 5236 5 0 5 5 0 92 1 uvmvnodes 80 110 0 0 3 0 3 3 0 8 0 dma4096 4096 1 0 1 1 0 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 7 0 7 1 0 1 1 0 8 1 dma128 128 253 0 253 1 0 1 1 0 8 1 dma64 64 6 0 6 1 0 1 1 0 8 1 dma32 32 7 0 7 1 0 1 1 0 8 1 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 16 0 1 1 0 1 1 0 8 0 uaddrrnd 24 773 0 744 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 773 0 744 1 0 1 1 0 8 0 vmmpekpl 168 8402 0 8377 2 0 2 2 0 8 0 vmmpepl 168 60556 0 58765 104 0 104 104 0 357 19 vmsppl 368 772 0 744 4 0 4 4 0 8 1 rwobjpl 40 20505 0 19535 16 0 16 16 0 8 3 pdppl 4096 1552 0 1488 104 34 70 82 0 8 6 pvpl 32 386619 0 377876 144 0 144 144 0 265 50 pmappl 216 772 0 744 3 0 3 3 0 8 1 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 382 0 34 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace kcov_remote_enter(0,ffff80002a77e890) at kcov_remote_enter+0x122 sys/dev/kcov.c:670 timeout_run(ffffffff83871810,ffff80002a7a0870) at timeout_run+0xdf sys/kern/kern_timeout.c:696 softclock_process_tick_timeout(ffff80002a7a0870,0) at softclock_process_tick_timeout+0x230 sys/kern/kern_timeout.c:756 softclock(0) at softclock+0x152 sys/kern/kern_timeout.c:788 softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87 dosoftint(0) at dosoftint+0x48 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 writedisklabel(d02,ffffffff8192ed30,ffff800000039000) at writedisklabel+0x1b8 sys/arch/amd64/amd64/disksubr.c:158 sdioctl(d02,84946467,ffff8000015e9800,3,ffff80003c8fe030) at sdioctl+0x959 sys/scsi/sd.c:921 VOP_IOCTL(fffffd806cc9dcb0,84946467,ffff8000015e9800,3,fffffd8007ffd9c0,ffff80003c8fe030) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd80687c3350,84946467,ffff8000015e9800,ffff80003c8fe030) at vn_ioctl+0xea sys/kern/vfs_vnops.c:531 sys_ioctl(ffff80003c8fe030,ffff80002ecc3450,ffff80002ecc33a0) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80002ecc3450) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002ecc3450) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2e957e3edc0, count: -14 ddb> machine ddbcpu 1 No such command ddb> trace kcov_remote_enter(0,ffff80002a77e890) at kcov_remote_enter+0x122 sys/dev/kcov.c:670 timeout_run(ffffffff83871810,ffff80002a7a0870) at timeout_run+0xdf sys/kern/kern_timeout.c:696 softclock_process_tick_timeout(ffff80002a7a0870,0) at softclock_process_tick_timeout+0x230 sys/kern/kern_timeout.c:756 softclock(0) at softclock+0x152 sys/kern/kern_timeout.c:788 softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87 dosoftint(0) at dosoftint+0x48 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 writedisklabel(d02,ffffffff8192ed30,ffff800000039000) at writedisklabel+0x1b8 sys/arch/amd64/amd64/disksubr.c:158 sdioctl(d02,84946467,ffff8000015e9800,3,ffff80003c8fe030) at sdioctl+0x959 sys/scsi/sd.c:921 VOP_IOCTL(fffffd806cc9dcb0,84946467,ffff8000015e9800,3,fffffd8007ffd9c0,ffff80003c8fe030) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd80687c3350,84946467,ffff8000015e9800,ffff80003c8fe030) at vn_ioctl+0xea sys/kern/vfs_vnops.c:531 sys_ioctl(ffff80003c8fe030,ffff80002ecc3450,ffff80002ecc33a0) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80002ecc3450) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002ecc3450) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2e957e3edc0, count: -14