kernel: integer divide fault trap, code=0 Stopped at rc4_keysetup+0xaf: divl 0xffffffffffffffac(%rbp),%eax ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic the kernel did not panic ddb{1}> trace rc4_keysetup(ffff80002e510f82,ffff80002e511094,0) at rc4_keysetup+0xaf sys/crypto/arc4.c:41 pipex_mppe_init(ffff80002e510f48,ffffd828,3308,ffff800000c5ca6c,ffffd828) at pipex_mppe_init+0x212 sys/net/pipex.c:2319 pipex_init_session(ffff800021b9ab08,ffff800000c5c800) at pipex_init_session+0x5e1 pipex_session_init_mppe_recv sys/net/pipex.c:2327 [inline] pipex_init_session(ffff800021b9ab08,ffff800000c5c800) at pipex_init_session+0x5e1 sys/net/pipex.c:385 pppacioctl(4086334,82907003,ffff800000c5c800,1,ffff8000212b02a8) at pppacioctl+0x156 pppac_add_session sys/net/if_pppx.c:1316 [inline] pppacioctl(4086334,82907003,ffff800000c5c800,1,ffff8000212b02a8) at pppacioctl+0x156 sys/net/if_pppx.c:1166 VOP_IOCTL(fffffd8067f631f0,82907003,ffff800000c5c800,1,fffffd807f7d77b8,ffff8000212b02a8) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd80670763b0,82907003,ffff800000c5c800,ffff8000212b02a8) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:525 sys_ioctl(ffff8000212b02a8,ffff800021b9ae58,ffff800021b9aea0) at sys_ioctl+0x4a2 syscall(ffff800021b9af20) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff800021b9af20) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa246ae94810, count: -9 ddb{1}> show registers rdi 0xffff800023d6d000 rsi 0 rbp 0xffff800021b9a990 rbx 0 rdx 0 rcx 0 rax 0x1 r8 0x60 r9 0x2f2d33bf r10 0x16db5de8c96b6e9 r11 0x83595f44ff2ceba r12 0xffff80002e511094 r13 0 r14 0xffff80002e510f82 r15 0 rip 0xffffffff82440a2f rc4_keysetup+0xaf cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021b9a930 ss 0x10 rc4_keysetup+0xaf: divl 0xffffffffffffffac(%rbp),%eax ddb{1}> show proc PROC (syz-executor.5) pid=38004 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff800021259510,0xffffffff82a1a8b0 process=0xffff80002477add0 user=0xffff800021b95000, vmspace=0xfffffd8068bfd5e0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 67917 28991 37103 0 7 0 syz-executor.5 *67917 38004 37103 0 7 0x4000000 syz-executor.5 13658 294369 93991 0 2 0 syz-executor.2 13658 218999 93991 0 2 0x4000000 syz-executor.2 13658 299921 93991 0 2 0x4000000 syz-executor.2 13658 472019 93991 0 3 0x4000080 fsleep syz-executor.2 1987 507733 59474 0 3 0x80 nanoslp syz-executor.1 1987 307724 59474 0 3 0x4000080 fsleep syz-executor.1 1987 182392 59474 0 3 0x4000080 fsleep syz-executor.1 1987 141534 59474 0 3 0x4000080 fsleep syz-executor.1 83578 112948 44186 0 2 0 syz-executor.3 83578 58158 44186 0 3 0x4000080 kqpoll syz-executor.3 83925 91163 699 0 2 0 syz-executor.6 83925 446522 699 0 3 0x4000080 fsleep syz-executor.6 47750 171573 96284 0 2 0 syz-executor.0 47750 460593 96284 0 3 0x4000080 fsleep syz-executor.0 47750 503025 96284 0 3 0x4000080 fsleep syz-executor.0 47750 503886 96284 0 3 0x4000080 fsleep syz-executor.0 699 346275 16059 0 3 0x82 nanoslp syz-executor.6 44186 503960 16059 0 3 0x82 nanoslp syz-executor.3 93991 71490 16059 0 3 0x82 nanoslp syz-executor.2 37103 154820 16059 0 3 0x82 nanoslp syz-executor.5 59474 17907 16059 0 3 0x82 nanoslp syz-executor.1 70777 463219 16059 0 3 0x2 biowait syz-executor.7 67377 400136 16059 0 2 0x2 syz-executor.4 96284 192596 16059 0 3 0x82 nanoslp syz-executor.0 1766 6800 0 0 3 0x14200 bored sosplice 15339 162275 0 0 3 0x14280 nfsidl nfsio 43130 433401 0 0 3 0x14280 nfsidl nfsio 47774 77893 0 0 3 0x14280 nfsidl nfsio 62576 7474 0 0 3 0x14280 nfsidl nfsio 83130 445873 0 0 3 0x14280 nfsidl nfsio 12065 468263 0 0 3 0x14280 nfsidl nfsio 34610 221774 0 0 3 0x14280 nfsidl nfsio 59901 182813 0 0 3 0x14280 nfsidl nfsio 51392 348117 0 0 3 0x14280 nfsidl nfsio 65407 457635 0 0 3 0x14280 nfsidl nfsio 38477 88323 0 0 3 0x14280 nfsidl nfsio 75265 393893 0 0 3 0x14280 nfsidl nfsio 96165 127393 0 0 3 0x14280 nfsidl nfsio 39852 282535 0 0 3 0x14280 nfsidl nfsio 2587 190395 0 0 3 0x14280 nfsidl nfsio 9675 23278 0 0 3 0x14280 nfsidl nfsio 33758 459137 0 0 3 0x14280 nfsidl nfsio 64296 182522 0 0 3 0x14280 nfsidl nfsio 31310 121973 0 0 3 0x14280 nfsidl nfsio 60406 406416 0 0 3 0x14280 nfsidl nfsio 36072 215664 0 0 3 0x14200 acct acct 16059 70693 77484 0 3 0x82 wait syz-fuzzer 16059 499493 77484 0 3 0x4000082 nanoslp syz-fuzzer 16059 70491 77484 0 3 0x4000082 thrsleep syz-fuzzer 16059 396130 77484 0 3 0x4000082 thrsleep syz-fuzzer 16059 189101 77484 0 3 0x4000082 thrsleep syz-fuzzer 16059 109069 77484 0 3 0x4000082 wait syz-fuzzer 16059 136365 77484 0 3 0x4000082 wait syz-fuzzer 16059 471326 77484 0 3 0x4000082 thrsleep syz-fuzzer 16059 230359 77484 0 3 0x4000082 thrsleep syz-fuzzer 16059 519981 77484 0 3 0x4000082 wait syz-fuzzer 16059 337132 77484 0 3 0x4000082 nanoslp syz-fuzzer 16059 166398 77484 0 3 0x4000082 kqread syz-fuzzer 16059 93219 77484 0 3 0x4000082 wait syz-fuzzer 16059 523180 77484 0 3 0x4000082 wait syz-fuzzer 16059 212753 77484 0 3 0x4000082 wait syz-fuzzer 16059 221426 77484 0 3 0x4000082 wait syz-fuzzer 77484 290527 90955 0 3 0x10008a sigsusp ksh 90955 74718 89930 0 3 0x9a kqread sshd 16228 129409 1 0 3 0x100083 ttyin getty 89930 69275 1 0 3 0x88 kqread sshd 5163 254834 22169 74 3 0x1100092 bpf pflogd 22169 181549 1 0 3 0x80 netio pflogd 63187 183463 92933 73 3 0x1100090 kqread syslogd 92933 317142 1 0 3 0x100082 netio syslogd 18372 502714 1 0 3 0x100080 kqread resolvd 12205 275622 75553 77 3 0x100092 kqread dhcpleased 68587 384321 75553 77 3 0x100092 kqread dhcpleased 75553 449731 1 0 3 0x80 kqread dhcpleased 31312 68912 0 0 3 0x14200 bored smr 34289 3624 0 0 2 0x14200 zerothread 25102 343434 0 0 3 0x14200 aiodoned aiodoned 19313 423275 0 0 3 0x14200 syncer update 31688 143921 0 0 3 0x14200 cleaner cleaner 15238 97671 0 0 3 0x14200 reaper reaper 82347 348386 0 0 3 0x14200 pgdaemon pagedaemon 41593 237596 0 0 3 0x14200 bored viomb 26641 198751 0 0 3 0x40014200 acpi0 acpi0 94079 262225 0 0 3 0x40014200 idle1 62543 307345 0 0 3 0x14200 bored softnet 35872 117728 0 0 3 0x14200 bored softnet 70366 91543 0 0 3 0x14200 bored softnet 18116 497866 0 0 3 0x14200 bored softnet 67607 121338 0 0 3 0x14200 bored systqmp 79659 500247 0 0 3 0x14200 bored systq 34830 251930 0 0 3 0x40014200 bored softclock 20001 430314 0 0 3 0x40014200 idle0 1 94437 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 67917 (syz-executor.5) thread 0xffff8000212b02a8 (38004) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82a18488) #0 witness_lock+0x44d #1 vn_ioctl+0x41 sys/kern/vfs_vnops.c:508 #2 sys_ioctl+0x4a2 #3 syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] #3 syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 #4 Xsyscall+0x128 Process 70777 (syz-executor.7) thread 0xffff8000212b1268 (463219) exclusive rrwlock inode r = 0 (0xfffffd806e351808) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vget+0x1fc sys/kern/vfs_subr.c:676 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1324 #8 ufs_lookup+0x13ba sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:560 #11 namei+0x36a sys/kern/vfs_lookup.c:244 #12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1848 #13 syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] #13 syscall+0x435 sys/arch/amd64/amd64/trap.c:585 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806e351918) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vget+0x1fc sys/kern/vfs_subr.c:676 #6 cache_lookup+0x2b4 sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x1ac sys/ufs/ufs/ufs_lookup.c:162 #8 VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:560 #10 namei+0x36a sys/kern/vfs_lookup.c:244 #11 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1848 #12 syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] #12 syscall+0x435 sys/arch/amd64/amd64/trap.c:585 #13 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10222 6569K 6827K 78643K 17800 0 pcb 13 14K 16K 78643K 637 0 rtable 243 18K 20K 78643K 1784 0 ifaddr 119 22K 22K 78643K 600 0 sysctl 2 0K 0K 78643K 2 0 counters 66 36K 36K 78643K 300 0 ioctlops 1 1K 4K 78643K 2626 0 iov 0 0K 24K 78643K 588 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1534 96K 96K 78643K 3936 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 60 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 315 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 16 57K 89K 78643K 5447 0 sigio 0 0K 0K 78643K 19 0 proc 71 91K 116K 78643K 1675 0 subproc 104 6K 6K 78643K 520 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 313 0 in_multi 92 6K 7K 78643K 610 0 ether_multi 1 0K 0K 78643K 20 0 mrt 1 0K 0K 78643K 28 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 145 652K 652K 78643K 145 0 exec 0 0K 2K 78643K 1779 0 pfkey data 0 0K 0K 78643K 35 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 8 62K 64K 78643K 10 0 UVM amap 376 420K 657K 78643K 34144 0 UVM aobj 131 4K 4K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 139 0 NDP 19 0K 1K 78643K 195 0 temp 155 4727K 5751K 78643K 56721 0 kqueue 12 18K 24K 78643K 455 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 plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 394 0 391 5 4 1 3 0 8 0 rtentry 112 580 0 479 4 1 3 4 0 8 0 unpcb 144 3515 0 3500 25 24 1 8 0 8 0 syncache 296 32 0 32 9 9 0 1 0 8 0 tcpqe 32 101 0 101 3 3 0 1 0 8 0 tcpcb 768 2086 0 2078 67 66 1 16 0 8 0 arp 120 90 0 72 1 0 1 1 0 8 0 inpcb 368 5188 0 5181 64 62 2 13 0 8 1 nd6 48 138 0 116 1 0 1 1 0 8 0 pkpcb 40 38 0 38 2 2 0 1 0 8 0 kcovpl 48 40 0 32 1 0 1 1 0 8 0 mppekey 1024 1 0 0 1 0 1 1 0 8 0 ppxss 1256 80 0 76 7 6 1 1 0 8 0 pfstscr 40 11 0 11 3 3 0 1 0 8 0 pffrag 232 30 0 29 2 1 1 1 0 482 0 pffrnode 88 30 0 29 2 1 1 1 0 8 0 pffrent 40 122 0 121 2 1 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 pfrktable 1344 27 0 23 2 1 1 1 0 8 0 pfanchor 1280 63 0 56 3 1 2 2 0 8 0 pftag 88 9 0 8 3 2 1 1 0 8 0 pfstitem 24 53 0 51 1 0 1 1 0 8 0 pfstkey 120 69 0 67 2 1 1 2 0 8 0 pfstate 336 60 0 58 4 3 1 4 0 8 0 pfrule 1360 41 0 29 3 2 1 2 0 8 0 rttmr 136 8 0 8 3 3 0 1 0 8 0 art_heap8 4096 2 0 1 2 1 1 2 0 8 0 art_heap4 256 2694 0 2276 50 22 28 30 0 8 0 art_table 32 2696 0 2277 4 0 4 4 0 8 0 art_node 16 579 0 490 1 0 1 1 0 8 0 sysvmsgpl 40 20 0 6 1 0 1 1 0 8 0 semupl 112 5 0 5 2 2 0 1 0 8 0 semapl 112 313 0 303 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 8263 0 6810 91 0 91 91 0 8 0 ffsino 272 8263 0 6810 97 0 97 97 0 8 0 nchpl 144 15460 0 13824 63 0 63 63 0 8 0 rtmask 32 2 0 1 1 0 1 1 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 60002 0 60002 3 2 1 2 0 8 1 percpumem 16 162 0 117 1 0 1 1 0 8 0 vcpupl 2048 57 0 0 8 0 8 8 0 8 0 vmpool 568 60 0 3 5 0 5 5 0 8 0 pfiaddrpl 120 12 0 5 2 1 1 1 0 8 0 kstatmem 264 196 0 158 5 2 3 3 0 8 0 scsiplug 72 3 0 3 1 1 0 1 0 8 0 scxspl 216 42540 0 42539 17 16 1 8 0 8 0 plimitpl 152 384 0 369 1 0 1 1 0 8 0 sigapl 424 5723 0 5655 10 2 8 8 0 8 0 futexpl 64 46203 0 46195 1 0 1 1 0 8 0 knotepl 120 716 0 0 17 0 17 17 0 8 0 kqueuepl 216 1561 0 1552 28 27 1 5 0 8 0 pipepl 320 860 0 832 21 18 3 8 0 8 0 fdescpl 496 5684 0 5655 6 2 4 5 0 8 0 filepl 152 39999 0 39756 63 49 14 22 0 8 3 lockfpl 104 1821 0 1818 6 5 1 4 0 8 0 lockfspl 48 435 0 432 1 0 1 1 0 8 0 sessionpl 144 56 0 39 1 0 1 1 0 8 0 pgrppl 48 65 0 48 1 0 1 1 0 8 0 ucredpl 104 4541 0 4528 1 0 1 1 0 8 0 zombiepl 144 5655 0 5655 1 0 1 1 0 8 1 processpl 1064 5723 0 5655 5 0 5 5 0 8 0 procpl 672 15863 0 15768 15 6 9 10 0 8 1 srpgc 96 52 0 52 10 10 0 1 0 8 0 sosppl 168 19 0 19 3 3 0 1 0 8 0 sockpl 488 9144 0 9119 139 134 5 28 0 8 1 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 19 0 0 3 0 3 3 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 10 0 0 1 0 1 1 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 6 0 0 1 0 1 1 0 8 0 mcl2k 2048 431 0 0 53 2 51 53 0 8 0 mtagpl 96 195 0 0 4 0 4 4 0 8 0 mbufpl 256 544 0 0 29 0 29 29 0 8 0 bufpl 288 11648 0 5319 453 0 453 453 0 8 0 anonpl 24 1095853 0 1077774 162 44 118 135 0 186 0 amapchunkpl 152 136880 0 136080 352 320 32 345 0 158 0 amappl16 200 14612 0 14017 88 56 32 44 0 8 0 amappl15 192 866 0 860 1 0 1 1 0 8 0 amappl14 184 1471 0 1465 1 0 1 1 0 8 0 amappl13 176 1007 0 1004 1 0 1 1 0 8 0 amappl12 168 291 0 286 1 0 1 1 0 8 0 amappl11 160 812 0 789 2 0 2 2 0 8 0 amappl10 152 958 0 954 1 0 1 1 0 8 0 amappl9 144 1066 0 1062 1 0 1 1 0 8 0 amappl8 136 1459 0 1362 4 0 4 4 0 8 0 amappl7 128 470 0 443 1 0 1 1 0 8 0 amappl6 120 981 0 967 2 1 1 2 0 8 0 amappl5 112 4297 0 4281 1 0 1 1 0 8 0 amappl4 104 3495 0 3456 3 1 2 2 0 8 0 amappl3 96 16925 0 16866 2 0 2 2 0 8 0 amappl2 88 1717 0 1674 3 1 2 2 0 8 0 amappl1 80 143521 0 142821 20 4 16 20 0 8 0 amappl 88 33032 0 32816 7 1 6 6 0 92 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 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 72 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 5744 0 5658 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 5744 0 5658 1 0 1 1 0 8 0 vmmpekpl 168 45755 0 45683 4 0 4 4 0 8 0 vmmpepl 168 568922 0 566100 247 112 135 158 0 357 0 vmsppl 368 5743 0 5658 9 1 8 8 0 8 0 rwobjpl 56 144268 0 136487 116 5 111 113 0 8 0 pdppl 4096 11495 0 11373 430 306 124 126 0 8 2 pvpl 32 2216601 0 2194388 299 109 190 258 0 265 0 pmappl 248 5743 0 5658 7 1 6 6 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1322 0 409 27 0 27 27 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82966ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff82a18280) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82a18280) at __mp_lock+0x129 sys/kern/kern_lock.c:147 intr_handler(ffff80002c052080,ffff80000004bd00) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge21_untramp() at Xintr_ioapic_edge21_untramp+0x18f end of kernel end trace frame: 0x7f7ffffe5560, count: -6 ddb{0}> machine ddbcpu 1 Stopped at rc4_keysetup+0xaf: divl 0xffffffffffffffac(%rbp),%eax ddb{1}> trace rc4_keysetup(ffff80002e510f82,ffff80002e511094,0) at rc4_keysetup+0xaf sys/crypto/arc4.c:41 pipex_mppe_init(ffff80002e510f48,ffffd828,3308,ffff800000c5ca6c,ffffd828) at pipex_mppe_init+0x212 sys/net/pipex.c:2319 pipex_init_session(ffff800021b9ab08,ffff800000c5c800) at pipex_init_session+0x5e1 pipex_session_init_mppe_recv sys/net/pipex.c:2327 [inline] pipex_init_session(ffff800021b9ab08,ffff800000c5c800) at pipex_init_session+0x5e1 sys/net/pipex.c:385 pppacioctl(4086334,82907003,ffff800000c5c800,1,ffff8000212b02a8) at pppacioctl+0x156 pppac_add_session sys/net/if_pppx.c:1316 [inline] pppacioctl(4086334,82907003,ffff800000c5c800,1,ffff8000212b02a8) at pppacioctl+0x156 sys/net/if_pppx.c:1166 VOP_IOCTL(fffffd8067f631f0,82907003,ffff800000c5c800,1,fffffd807f7d77b8,ffff8000212b02a8) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd80670763b0,82907003,ffff800000c5c800,ffff8000212b02a8) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:525 sys_ioctl(ffff8000212b02a8,ffff800021b9ae58,ffff800021b9aea0) at sys_ioctl+0x4a2 syscall(ffff800021b9af20) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff800021b9af20) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa246ae94810, count: -9