uvm_fault(0xfffffd806f26fd78, 0x4, 0, 1) -> e kernel: page fault trap, code=0 Stopped at igmp_leavegroup+0xaf: movl 0x4(%rax),%r12d TID PID UID PRFLAGS PFLAGS CPU COMMAND igmp_leavegroup(ffff800000e06400,ffff8000006ab000) at igmp_leavegroup+0xaf sys/netinet/igmp.c:512 in_delmulti(ffff800000e06400) at in_delmulti+0xd3 sys/netinet/in.c:908 ip_freemoptions(ffff800000e24210) at ip_freemoptions+0x5d sys/netinet/ip_output.c:1737 in_pcbdetach(fffffd806bc0be18) at in_pcbdetach+0x97 sys/netinet/in_pcb.c:606 udp_detach(fffffd806b21bd10) at udp_detach+0x3f sys/netinet/udp_usrreq.c:1139 soclose(fffffd806b21bd10,0) at soclose+0x80 pru_detach sys/sys/protosw.h:283 [inline] soclose(fffffd806b21bd10,0) at soclose+0x80 sys/kern/uipc_socket.c:411 soo_close(fffffd80648fe3d8,ffff80002a6ea2c0) at soo_close+0x44 fdrop(fffffd80648fe3d8,ffff80002a6ea2c0) at fdrop+0xd5 sys/kern/kern_descrip.c:1274 closef(fffffd80648fe3d8,ffff80002a6ea2c0) at closef+0x11b sys/kern/kern_descrip.c:1258 fdfree(ffff80002a6ea2c0) at fdfree+0xe3 sys/kern/kern_descrip.c:1190 exit1(ffff80002a6ea2c0,0,0,1) at exit1+0x371 sys/kern/kern_exit.c:199 sys_exit(ffff80002a6ea2c0,ffff800037817c40,ffff800037817b90) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff800037817c40) at syscall+0x72a sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x766d09f88280, 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(0xfffffd806f26fd78, 0x4, 0, 1) -> e ddb> trace igmp_leavegroup(ffff800000e06400,ffff8000006ab000) at igmp_leavegroup+0xaf sys/netinet/igmp.c:512 in_delmulti(ffff800000e06400) at in_delmulti+0xd3 sys/netinet/in.c:908 ip_freemoptions(ffff800000e24210) at ip_freemoptions+0x5d sys/netinet/ip_output.c:1737 in_pcbdetach(fffffd806bc0be18) at in_pcbdetach+0x97 sys/netinet/in_pcb.c:606 udp_detach(fffffd806b21bd10) at udp_detach+0x3f sys/netinet/udp_usrreq.c:1139 soclose(fffffd806b21bd10,0) at soclose+0x80 pru_detach sys/sys/protosw.h:283 [inline] soclose(fffffd806b21bd10,0) at soclose+0x80 sys/kern/uipc_socket.c:411 soo_close(fffffd80648fe3d8,ffff80002a6ea2c0) at soo_close+0x44 fdrop(fffffd80648fe3d8,ffff80002a6ea2c0) at fdrop+0xd5 sys/kern/kern_descrip.c:1274 closef(fffffd80648fe3d8,ffff80002a6ea2c0) at closef+0x11b sys/kern/kern_descrip.c:1258 fdfree(ffff80002a6ea2c0) at fdfree+0xe3 sys/kern/kern_descrip.c:1190 exit1(ffff80002a6ea2c0,0,0,1) at exit1+0x371 sys/kern/kern_exit.c:199 sys_exit(ffff80002a6ea2c0,ffff800037817c40,ffff800037817b90) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff800037817c40) at syscall+0x72a sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x766d09f88280, count: -14 ddb> show registers rdi 0 rsi 0 rbp 0xffff8000378177e0 rbx 0x4 rdx 0 rcx 0x1 rax 0 r8 0 r9 0 r10 0xd78b3c2656bda110 r11 0x9c0afe0d879611a5 r12 0 r13 0x3 r14 0xffff800000e06400 r15 0xffff8000006ab000 rip 0xffffffff81fd57df igmp_leavegroup+0xaf cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000378177b0 ss 0x10 igmp_leavegroup+0xaf: movl 0x4(%rax),%r12d ddb> show proc PROC (syz-executor.1) tid=65383 pid=80263 tcnt=1 stat=onproc flags process=8001008 proc=2000 runpri=32, usrpri=59, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80002a6ea2c0 forw=0xffffffffffffffff, list=0xffff80002a6a8cf0,0xffff80002a6a8f90 process=0xffff8000343c0448 user=0xffff800037812000, vmspace=0xfffffd806f26fd78 estcpu=9, cpticks=3, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 48652 230459 11546 0 2 0x8000000 syz-executor.0 48652 514730 11546 0 3 0xc000080 netcon2 syz-executor.0 41850 271604 46537 0 2 0x8000000 syz-executor.2 41850 149428 46537 0 3 0xc000080 fsleep syz-executor.2 2984 340784 95570 0 2 0x8000000 syz-executor.4 2984 478806 95570 0 3 0xc000080 fifow syz-executor.4 91175 393146 91853 0 2 0x8000000 syz-executor.5 91175 202482 91853 0 3 0xc000080 netcon2 syz-executor.5 91175 209215 91853 0 3 0xc000080 fsleep syz-executor.5 17111 348540 81388 0 3 0x8000080 nanoslp syz-executor.3 17111 152288 81388 0 3 0xc000080 sbwait syz-executor.3 17111 39695 81388 0 3 0xc000080 fsleep syz-executor.3 17111 271080 81388 0 3 0xc000080 fsleep syz-executor.3 75252 112229 0 0 3 0x14280 nfsidl nfsio 6095 162028 0 0 3 0x14280 nfsidl nfsio 4509 203950 0 0 3 0x14280 nfsidl nfsio 34186 142096 0 0 3 0x14280 nfsidl nfsio 57153 295025 0 0 3 0x14280 nfsidl nfsio 35343 92431 0 0 3 0x14280 nfsidl nfsio 4855 370218 0 0 3 0x14280 nfsidl nfsio 23145 22485 0 0 3 0x14280 nfsidl nfsio 97076 176547 0 0 3 0x14280 nfsidl nfsio 31434 359184 0 0 3 0x14280 nfsidl nfsio 34989 447710 0 0 3 0x14280 nfsidl nfsio 22083 493628 0 0 3 0x14280 nfsidl nfsio 34506 112499 0 0 3 0x14280 nfsidl nfsio 57751 234629 0 0 3 0x14280 nfsidl nfsio 20678 50219 0 0 3 0x14280 nfsidl nfsio 16466 507444 0 0 3 0x14280 nfsidl nfsio 1897 113753 0 0 3 0x14280 nfsidl nfsio 90124 139309 0 0 3 0x14280 nfsidl nfsio 77050 49585 0 0 3 0x14280 nfsidl nfsio 19823 419768 0 0 3 0x14280 nfsidl nfsio 64066 87368 47175 0 3 0x8000080 nanoslp syz-executor.6 64066 396186 47175 0 3 0xc000080 netcon syz-executor.6 64066 150899 47175 0 3 0xc000080 fsleep syz-executor.6 96434 448109 16324 0 3 0x8000090 nanoslp syz-executor.7 96434 286044 16324 0 3 0xc000090 bell syz-executor.7 96434 10940 16324 0 3 0xc000090 fsleep syz-executor.7 47175 158113 30573 0 3 0x8000082 nanoslp syz-executor.6 30253 176959 0 0 3 0x14200 acct acct 24751 13676 0 0 3 0x14200 bored sosplice 16324 365788 30573 0 3 0x8000082 nanoslp syz-executor.7 91853 237554 30573 0 3 0x8000082 nanoslp syz-executor.5 11546 189822 30573 0 3 0x8000082 nanoslp syz-executor.0 81388 10938 30573 0 3 0x8000082 nanoslp syz-executor.3 46537 281077 30573 0 3 0x8000082 nanoslp syz-executor.2 36917 117930 30573 0 3 0x8000082 nanoslp syz-executor.1 95570 19624 30573 0 3 0x8000082 nanoslp syz-executor.4 30573 401007 81067 0 3 0x1a000082 wait syz-fuzzer 30573 176961 81067 0 3 0x1e000082 thrsleep syz-fuzzer 30573 210353 81067 0 3 0x1e000082 wait syz-fuzzer 30573 161131 81067 0 3 0x1e000082 wait syz-fuzzer 30573 175331 81067 0 3 0x1e000082 thrsleep syz-fuzzer 30573 516943 81067 0 3 0x1e000082 wait syz-fuzzer 30573 198619 81067 0 3 0x1e000082 thrsleep syz-fuzzer 30573 55023 81067 0 3 0x1e000082 wait syz-fuzzer 30573 170883 81067 0 3 0x1e000082 wait syz-fuzzer 30573 402327 81067 0 3 0x1e000082 wait syz-fuzzer 30573 167279 81067 0 3 0x1e000082 thrsleep syz-fuzzer 30573 441693 81067 0 3 0x1e000082 wait syz-fuzzer 30573 250911 81067 0 3 0x1e000082 thrsleep syz-fuzzer 30573 480955 81067 0 3 0x1e000082 kqread syz-fuzzer 81067 174546 78707 0 3 0x810008a sigsusp ksh 78707 357616 68582 0 3 0x1800009a kqread sshd 23628 429263 1 0 3 0x18100083 ttyin getty 68582 470759 1 0 3 0x18000088 kqread sshd 62358 426842 75421 73 3 0x19100090 kqread syslogd 75421 351765 1 0 3 0x18100082 sbwait syslogd 30794 423595 1 0 3 0x18100080 kqread resolvd 57479 451822 2574 77 3 0x18100092 kqread dhcpleased 94522 516134 2574 77 3 0x18100092 kqread dhcpleased 2574 326219 1 0 3 0x18000080 kqread dhcpleased 70078 418901 0 0 3 0x14200 bored smr 62417 342686 0 0 2 0x14200 zerothread 64038 498363 0 0 3 0x14200 aiodoned aiodoned 25737 162444 0 0 3 0x14200 syncer update 77937 214539 0 0 3 0x14200 cleaner cleaner 89353 61403 0 0 3 0x14200 reaper reaper 2731 120535 0 0 3 0x14200 pgdaemon pagedaemon 86788 261454 0 0 3 0x14200 bored viomb 68300 280738 0 0 3 0x40014200 acpi0 acpi0 89533 219766 0 0 3 0x14200 bored softnet3 35103 312396 0 0 3 0x14200 bored softnet2 74382 197170 0 0 3 0x14200 bored softnet1 30136 491671 0 0 3 0x14200 bored softnet0 99107 178354 0 0 3 0x14200 bored systqmp 61881 388263 0 0 3 0x14200 bored systq 99337 3491 0 0 3 0x40014200 tmoslp softclock 83844 487285 0 0 3 0x40014200 idle0 1 443063 0 0 3 0x8000082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10202 6864K 7058K 166960K 11836 0 pcb 15 10K 10K 166960K 51 0 rtable 239 7K 7K 166960K 430 0 pf 29 8K 9K 166960K 44 0 ifaddr 43 11K 11K 166960K 56 0 ifgroup 50 2K 2K 166960K 75 0 counters 30 17K 17K 166960K 36 0 ioctlops 0 0K 2K 166960K 59 0 iov 0 0K 12K 166960K 16 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1373 86K 86K 166960K 1614 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 27 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 38 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 18 65K 69K 166960K 469 0 sigio 0 0K 0K 166960K 13 0 proc 58 59K 75K 166960K 535 0 subproc 104 6K 6K 166960K 117 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 3 0K 0K 166960K 99 0 in_multi 102 7K 7K 166960K 134 0 ether_multi 1 0K 0K 166960K 2 0 mrt 1 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 67 307K 307K 166960K 67 0 exec 0 0K 1K 166960K 398 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 311 78K 85K 166960K 6278 0 UVM aobj 131 4K 4K 166960K 132 0 pinsyscall 38 76K 100K 166960K 1614 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 24 0 NDP 11 0K 2K 166960K 35 0 temp 52 6802K 6868K 166960K 9204 0 kqueue 13 20K 26K 166960K 55 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 72 0 66 1 0 1 1 0 8 0 rtentry 112 129 0 18 4 0 4 4 0 8 0 unpcb 144 285 0 266 2 1 1 2 0 8 0 syncache 336 15 0 15 2 1 1 1 0 8 1 tcpqe 32 9 0 9 2 1 1 1 0 8 1 tcpcb 808 159 0 138 3 0 3 3 0 8 0 arp 88 21 0 3 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 360 528 0 499 10 5 5 9 0 8 2 nd6 104 31 0 5 1 0 1 1 0 8 0 pkpcb 40 2 0 2 2 1 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1072 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 256 508 0 50 29 0 29 29 0 8 0 art_table 32 509 0 50 4 0 4 4 0 8 0 art_node 16 127 0 27 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 6 1 0 1 1 0 8 0 semupl 112 2 0 2 2 1 1 1 0 8 1 semapl 112 32 0 22 1 0 1 1 0 8 0 shmpl 112 129 0 1 4 0 4 4 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2124 0 608 96 0 96 96 0 8 0 ffsino 240 2124 0 608 90 0 90 90 0 8 0 nchpl 144 2879 0 1146 66 0 66 66 0 8 0 uvmvnodes 80 2399 0 0 49 0 49 49 0 8 0 vnodes 216 2399 0 0 134 0 134 134 0 8 0 namei 1024 9537 0 9537 3 2 1 2 0 8 1 vcpupl 2048 1 0 0 1 0 1 1 0 8 0 vmpool 664 17 0 16 1 0 1 1 0 8 0 kstatmem 264 34 0 12 2 0 2 2 0 8 0 scxspl 216 10127 0 10127 9 1 8 8 1 8 8 plimitpl 152 76 0 61 1 0 1 1 0 8 0 sigapl 424 787 0 720 8 0 8 8 0 8 0 futexpl 64 6144 0 6138 1 0 1 1 0 8 0 knotepl 120 7144 0 7053 10 0 10 10 0 8 6 kqueuepl 184 101 0 92 1 0 1 1 0 8 0 pipepl 288 178 0 150 4 1 3 3 0 8 0 fdescpl 432 749 0 720 4 0 4 4 0 8 0 filepl 120 3879 0 3612 11 0 11 11 0 8 2 lockfpl 104 104 0 102 1 0 1 1 0 8 0 lockfspl 48 44 0 42 1 0 1 1 0 8 0 sessionpl 144 24 0 8 1 0 1 1 0 8 0 pgrppl 48 31 0 15 1 0 1 1 0 8 0 ucredpl 104 432 0 420 1 0 1 1 0 8 0 zombiepl 144 721 0 720 1 0 1 1 0 8 0 processpl 1072 787 0 720 5 0 5 5 0 8 0 procpl 656 1256 0 1164 8 0 8 8 0 8 0 sosppl 168 18 0 14 1 0 1 1 0 8 0 sockpl 472 892 0 838 17 8 9 14 0 8 2 mcl64k 65536 23 0 23 2 1 1 1 0 8 1 mcl16k 16384 8 0 8 2 1 1 1 0 8 1 mcl12k 12288 12 0 12 2 1 1 1 0 8 1 mcl9k 9216 3 0 3 2 1 1 1 0 8 1 mcl8k 8192 25 0 24 2 1 1 1 0 8 0 mcl4k 4096 76 0 76 2 1 1 1 0 8 1 mcl2k2 2112 1 0 1 1 0 1 1 0 8 1 mcl2k 2048 17211 0 17116 47 29 18 42 0 8 4 mtagpl 96 42 0 8 1 0 1 1 0 8 0 mbufpl 256 33896 0 33602 37 12 25 25 0 8 5 bufpl 280 4909 0 186 338 0 338 338 0 8 0 anonpl 24 218748 0 212643 58 19 39 55 0 188 2 amapchunkpl 152 20586 0 19824 31 1 30 31 0 158 0 amappl16 200 5462 0 5334 8 0 8 8 0 8 1 amappl15 192 10 0 10 1 1 0 1 0 8 0 amappl14 184 167 0 154 2 1 1 2 0 8 0 amappl13 176 13 0 13 1 1 0 1 0 8 0 amappl12 168 1380 0 1350 2 0 2 2 0 8 0 amappl11 160 47 0 37 1 0 1 1 0 8 0 amappl10 152 41 0 31 1 0 1 1 0 8 0 amappl9 144 175 0 174 1 0 1 1 0 8 0 amappl8 136 108 0 69 2 0 2 2 0 8 0 amappl7 128 80 0 71 1 0 1 1 0 8 0 amappl6 120 335 0 323 2 1 1 2 0 8 0 amappl5 112 188 0 176 1 0 1 1 0 8 0 amappl4 104 531 0 497 2 1 1 2 0 8 0 amappl3 96 4715 0 4613 3 0 3 3 0 8 0 amappl2 88 1184 0 1109 4 2 2 4 0 8 0 amappl1 80 10778 0 10283 22 11 11 22 0 8 0 amappl 88 5727 0 5506 6 0 6 6 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 72 131 0 1 3 0 3 3 0 8 0 uaddrrnd 24 766 0 736 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 766 0 736 1 0 1 1 0 8 0 vmmpekpl 168 10473 0 10426 3 0 3 3 0 8 0 vmmpepl 168 66581 0 64598 127 32 95 117 0 357 8 vmsppl 344 765 0 736 3 0 3 3 0 8 0 rwobjpl 24 25953 0 22318 23 1 22 22 0 8 0 pdppl 4096 1538 0 1473 98 31 67 67 0 8 2 pvpl 32 493412 0 480677 397 294 103 392 0 265 0 pmappl 216 765 0 736 2 0 2 2 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 425 0 82 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace igmp_leavegroup(ffff800000e06400,ffff8000006ab000) at igmp_leavegroup+0xaf sys/netinet/igmp.c:512 in_delmulti(ffff800000e06400) at in_delmulti+0xd3 sys/netinet/in.c:908 ip_freemoptions(ffff800000e24210) at ip_freemoptions+0x5d sys/netinet/ip_output.c:1737 in_pcbdetach(fffffd806bc0be18) at in_pcbdetach+0x97 sys/netinet/in_pcb.c:606 udp_detach(fffffd806b21bd10) at udp_detach+0x3f sys/netinet/udp_usrreq.c:1139 soclose(fffffd806b21bd10,0) at soclose+0x80 pru_detach sys/sys/protosw.h:283 [inline] soclose(fffffd806b21bd10,0) at soclose+0x80 sys/kern/uipc_socket.c:411 soo_close(fffffd80648fe3d8,ffff80002a6ea2c0) at soo_close+0x44 fdrop(fffffd80648fe3d8,ffff80002a6ea2c0) at fdrop+0xd5 sys/kern/kern_descrip.c:1274 closef(fffffd80648fe3d8,ffff80002a6ea2c0) at closef+0x11b sys/kern/kern_descrip.c:1258 fdfree(ffff80002a6ea2c0) at fdfree+0xe3 sys/kern/kern_descrip.c:1190 exit1(ffff80002a6ea2c0,0,0,1) at exit1+0x371 sys/kern/kern_exit.c:199 sys_exit(ffff80002a6ea2c0,ffff800037817c40,ffff800037817b90) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff800037817c40) at syscall+0x72a sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x766d09f88280, count: -14 ddb> machine ddbcpu 1 No such command ddb> trace igmp_leavegroup(ffff800000e06400,ffff8000006ab000) at igmp_leavegroup+0xaf sys/netinet/igmp.c:512 in_delmulti(ffff800000e06400) at in_delmulti+0xd3 sys/netinet/in.c:908 ip_freemoptions(ffff800000e24210) at ip_freemoptions+0x5d sys/netinet/ip_output.c:1737 in_pcbdetach(fffffd806bc0be18) at in_pcbdetach+0x97 sys/netinet/in_pcb.c:606 udp_detach(fffffd806b21bd10) at udp_detach+0x3f sys/netinet/udp_usrreq.c:1139 soclose(fffffd806b21bd10,0) at soclose+0x80 pru_detach sys/sys/protosw.h:283 [inline] soclose(fffffd806b21bd10,0) at soclose+0x80 sys/kern/uipc_socket.c:411 soo_close(fffffd80648fe3d8,ffff80002a6ea2c0) at soo_close+0x44 fdrop(fffffd80648fe3d8,ffff80002a6ea2c0) at fdrop+0xd5 sys/kern/kern_descrip.c:1274 closef(fffffd80648fe3d8,ffff80002a6ea2c0) at closef+0x11b sys/kern/kern_descrip.c:1258 fdfree(ffff80002a6ea2c0) at fdfree+0xe3 sys/kern/kern_descrip.c:1190 exit1(ffff80002a6ea2c0,0,0,1) at exit1+0x371 sys/kern/kern_exit.c:199 sys_exit(ffff80002a6ea2c0,ffff800037817c40,ffff800037817b90) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff800037817c40) at syscall+0x72a sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x766d09f88280, count: -14