A24&ۆNM F`_7dk};'"pwq ,kLVGqFB.CIRJjk2B;kernel: integer divide fault trap, code=0 Stopped at rc4_keysetup+0xaf: divl 0xffffffffffffffac(%rbp),%eax ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace rc4_keysetup(ffff80002feaf7da,ffff80002feaf8ec,0) at rc4_keysetup+0xaf sys/crypto/arc4.c:41 pipex_mppe_init(ffff80002feaf7a0,ffffdc60,6c59,ffff800000c4226c,ffffdc60) at pipex_mppe_init+0x212 sys/net/pipex.c:2319 pipex_init_session(ffff80002fecfa88,ffff800000c42000) at pipex_init_session+0x5e1 pipex_session_init_mppe_recv sys/net/pipex.c:2327 [inline] pipex_init_session(ffff80002fecfa88,ffff800000c42000) at pipex_init_session+0x5e1 sys/net/pipex.c:385 pppacioctl(4486337,82907003,ffff800000c42000,1,ffff80002b053270) at pppacioctl+0x156 pppac_add_session sys/net/if_pppx.c:1315 [inline] pppacioctl(4486337,82907003,ffff800000c42000,1,ffff80002b053270) at pppacioctl+0x156 sys/net/if_pppx.c:1165 VOP_IOCTL(fffffd80675bf6f8,82907003,ffff800000c42000,1,fffffd807f7d7478,ffff80002b053270) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8067581988,82907003,ffff800000c42000,ffff80002b053270) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:525 sys_ioctl(ffff80002b053270,ffff80002fecfdd8,ffff80002fecfe20) at sys_ioctl+0x4a2 syscall(ffff80002fecfea0) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002fecfea0) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3128afe3f40, count: -9 ddb{0}> show registers rdi 0xffff8000259a9000 rsi 0 rbp 0xffff80002fecf910 rbx 0 rdx 0 rcx 0 rax 0x1 r8 0x60 r9 0x2f2d33bf r10 0x42942ebc155028ed r11 0x4d134f8b9ddff23f r12 0xffff80002feaf8ec r13 0 r14 0xffff80002feaf7da r15 0 rip 0xffffffff8187a46f rc4_keysetup+0xaf cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002fecf8b0 ss 0x10 rc4_keysetup+0xaf: divl 0xffffffffffffffac(%rbp),%eax ddb{0}> show proc PROC (syz-executor.3) pid=387120 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff80002b052fd0,0xffff80002b052d40 process=0xffff8000ffff8c80 user=0xffff80002feca000, vmspace=0xfffffd806c22d2f0 estcpu=30, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 94710 157434 89509 0 2 0 syz-executor.7 59230 175777 21334 0 2 0 syz-executor.0 59230 373133 21334 0 3 0x4000080 fsleep syz-executor.0 84294 443259 28724 0 2 0 syz-executor.6 84294 428497 28724 0 2 0x4000000 syz-executor.6 40781 53458 80464 0 2 0 syz-executor.3 *40781 387120 80464 0 7 0x4000000 syz-executor.3 88685 103101 50410 0 7 0 syz-executor.5 2566 159880 37748 0 3 0x80 nanoslp syz-executor.4 2566 46221 37748 0 3 0x4000080 fsleep syz-executor.4 2566 270050 37748 0 3 0x4000080 ttyin syz-executor.4 50410 192612 32973 0 3 0x82 nanoslp syz-executor.5 3344 412924 0 0 3 0x14200 bored sosplice 80464 23895 32973 0 3 0x82 nanoslp syz-executor.3 21334 464987 32973 0 3 0x82 nanoslp syz-executor.0 23207 52087 53375 0 3 0x100082 netio ndp 53375 364214 1 0 3 0x10008a sigsusp sh 28724 213772 32973 0 3 0x82 nanoslp syz-executor.6 89509 241805 32973 0 3 0x82 nanoslp syz-executor.7 37748 392330 32973 0 3 0x82 nanoslp syz-executor.4 76895 238471 32973 0 2 0x2 syz-executor.2 67720 490351 32973 0 3 0x82 nanoslp syz-executor.1 32973 94439 97792 0 3 0x82 wait syz-fuzzer 32973 128993 97792 0 3 0x4000082 nanoslp syz-fuzzer 32973 229509 97792 0 3 0x4000082 wait syz-fuzzer 32973 284676 97792 0 3 0x4000082 thrsleep syz-fuzzer 32973 126197 97792 0 3 0x4000082 wait syz-fuzzer 32973 380218 97792 0 3 0x4000082 thrsleep syz-fuzzer 32973 413693 97792 0 3 0x4000082 thrsleep syz-fuzzer 32973 409149 97792 0 3 0x4000082 wait syz-fuzzer 32973 326150 97792 0 3 0x4000082 wait syz-fuzzer 32973 174319 97792 0 3 0x4000082 thrsleep syz-fuzzer 32973 489446 97792 0 3 0x4000082 wait syz-fuzzer 32973 294484 97792 0 3 0x4000082 wait syz-fuzzer 32973 224819 97792 0 3 0x4000082 wait syz-fuzzer 32973 374578 97792 0 3 0x4000082 thrsleep syz-fuzzer 32973 4838 97792 0 3 0x4000082 thrsleep syz-fuzzer 32973 58618 97792 0 3 0x4000082 kqread syz-fuzzer 97792 133585 75409 0 3 0x10008a sigsusp ksh 75409 347378 31826 0 3 0x9a kqread sshd 47647 322977 1 0 3 0x100083 ttyin getty 31826 221000 1 0 3 0x88 kqread sshd 16 89359 38973 74 3 0x1100092 bpf pflogd 38973 97862 1 0 3 0x80 netio pflogd 6966 504864 34077 73 3 0x1100090 kqread syslogd 34077 387519 1 0 3 0x100082 netio syslogd 85544 392122 1 0 3 0x100080 kqread resolvd 87323 420433 78674 77 3 0x100092 kqread dhcpleased 74875 323378 78674 77 3 0x100092 kqread dhcpleased 78674 279373 1 0 3 0x80 kqread dhcpleased 73504 10004 0 0 3 0x14200 bored smr 1086 233343 0 0 2 0x14200 zerothread 3818 450469 0 0 3 0x14200 aiodoned aiodoned 97891 510872 0 0 3 0x14200 syncer update 9272 198024 0 0 3 0x14200 cleaner cleaner 55311 91136 0 0 3 0x14200 reaper reaper 70037 158624 0 0 3 0x14200 pgdaemon pagedaemon 41751 299086 0 0 3 0x14200 bored viomb 86305 439863 0 0 3 0x40014200 acpi0 acpi0 99718 269895 0 0 3 0x40014200 idle1 53341 107006 0 0 3 0x14200 bored softnet 8466 477314 0 0 3 0x14200 bored softnet 34335 220963 0 0 3 0x14200 bored softnet 77252 236582 0 0 3 0x14200 bored softnet 53901 57849 0 0 3 0x14200 bored systqmp 21118 345608 0 0 3 0x14200 bored systq 52526 338073 0 0 3 0x40014200 bored softclock 87511 133360 0 0 3 0x40014200 idle0 1 509362 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 40781 (syz-executor.3) thread 0xffff80002b053270 (387120) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82ad7058) #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 76895 (syz-executor.2) thread 0xffff8000ffff57a8 (238471) exclusive rrwlock inode r = 0 (0xfffffd8068a635e8) #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 ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1353 #6 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394 #7 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1150 #8 VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388 #9 domkdirat+0x121 sys/kern/vfs_syscalls.c:3112 #10 syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] #10 syscall+0x435 sys/arch/amd64/amd64/trap.c:585 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806d4ede78) #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 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:412 #6 namei+0x36a sys/kern/vfs_lookup.c:244 #7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3097 #8 syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] #8 syscall+0x435 sys/arch/amd64/amd64/trap.c:585 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10225 6802K 6802K 78643K 12241 0 pcb 13 9K 10K 78643K 106 0 rtable 215 10K 10K 78643K 478 0 ifaddr 89 17K 17K 78643K 178 0 sysctl 2 0K 0K 78643K 2 0 counters 58 35K 35K 78643K 88 0 ioctlops 1 1K 6K 78643K 1645 0 iov 0 0K 12K 78643K 75 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1418 89K 89K 78643K 1966 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 8 0 VM map 2 1K 1K 78643K 2 0 sem 11 1K 1K 78643K 13 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 18 65K 85K 78643K 733 0 sigio 0 0K 0K 78643K 7 0 proc 69 91K 115K 78643K 641 0 subproc 117 7K 7K 78643K 164 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 22 0 in_multi 92 6K 6K 78643K 147 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 121 546K 546K 78643K 121 0 exec 0 0K 2K 78643K 858 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 62K 78643K 8 0 UVM amap 267 84K 85K 78643K 6063 0 UVM aobj 7 2K 2K 78643K 10 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 15 0 NDP 13 0K 1K 78643K 52 0 temp 104 4719K 4785K 78643K 14088 0 kqueue 12 18K 24K 78643K 84 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> 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 89 0 85 1 0 1 1 0 8 0 rtentry 112 154 0 55 4 0 4 4 0 8 0 unpcb 144 422 0 406 6 2 4 4 0 8 3 syncache 296 10 0 10 3 3 0 1 0 8 0 tcpqe 32 5 0 5 2 2 0 1 0 8 0 tcpcb 768 154 0 147 10 8 2 8 0 8 0 arp 120 26 0 10 1 0 1 1 0 8 0 inpcb 368 635 0 625 12 5 7 7 0 8 5 nd6 48 35 0 14 1 0 1 1 0 8 0 kcovpl 48 12 0 3 1 0 1 1 0 8 0 mppekey 1024 1 0 0 1 0 1 1 0 8 0 ppxss 1256 5 0 3 1 0 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 pfstitem 24 44 0 32 1 0 1 1 0 8 0 pfstkey 120 44 0 32 1 0 1 1 0 8 0 pfstate 336 44 0 32 4 2 2 3 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 630 0 219 31 5 26 29 0 8 0 art_table 32 631 0 219 4 0 4 4 0 8 0 art_node 16 153 0 63 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 3 1 0 1 1 0 8 0 semupl 112 5 0 5 2 2 0 1 0 8 0 semapl 112 9 0 0 1 0 1 1 0 8 0 shmpl 112 7 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2385 0 948 91 0 91 91 0 8 0 ffsino 272 2385 0 948 97 0 97 97 0 8 0 nchpl 144 3464 0 1820 63 0 63 63 0 8 0 uvmvnodes 80 2942 0 0 61 0 61 61 0 8 0 vnodes 216 2942 0 0 164 0 164 164 0 8 0 namei 1024 13128 0 13127 3 2 1 2 0 8 0 percpumem 16 56 0 15 1 0 1 1 0 8 0 vmpool 568 1 0 1 1 0 1 1 0 8 1 kstatmem 264 56 0 30 2 0 2 2 0 8 0 scxspl 216 9920 0 9920 12 11 1 8 0 8 1 plimitpl 152 166 0 150 1 0 1 1 0 8 0 sigapl 424 1030 0 980 8 2 6 7 0 8 0 futexpl 64 5463 0 5461 2 1 1 1 0 8 0 knotepl 120 258 0 0 8 0 8 8 0 8 0 kqueuepl 216 200 0 127 5 0 5 5 0 8 0 pipepl 320 266 0 235 8 5 3 8 0 8 0 fdescpl 496 1012 0 981 5 0 5 5 0 8 0 filepl 152 6645 0 6315 21 7 14 16 0 8 1 lockfpl 104 513 0 509 1 0 1 1 0 8 0 lockfspl 48 214 0 210 1 0 1 1 0 8 0 sessionpl 144 28 0 10 1 0 1 1 0 8 0 pgrppl 48 28 0 10 1 0 1 1 0 8 0 ucredpl 104 1581 0 1569 1 0 1 1 0 8 0 zombiepl 144 981 0 980 2 1 1 1 0 8 0 processpl 1064 1030 0 980 4 0 4 4 0 8 0 procpl 672 2221 0 2151 10 3 7 8 0 8 0 srpgc 96 10 0 10 2 2 0 1 0 8 0 sosppl 168 8 0 7 1 0 1 1 0 8 0 sockpl 488 1149 0 1119 21 8 13 13 0 8 8 mcl64k 65536 9 0 0 2 0 2 2 0 8 0 mcl16k 16384 12 0 0 2 0 2 2 0 8 0 mcl12k 12288 7 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 8 0 0 1 0 1 1 0 8 0 mcl4k 4096 31 0 0 4 0 4 4 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 437 0 0 54 0 54 54 0 8 0 mtagpl 96 21 0 0 1 0 1 1 0 8 0 mbufpl 256 478 0 0 30 0 30 30 0 8 0 bufpl 288 4742 0 139 329 0 329 329 0 8 0 anonpl 24 188334 0 172771 117 8 109 111 0 186 0 amapchunkpl 152 15855 0 15149 32 1 31 31 0 158 0 amappl16 200 2584 0 2028 40 4 36 36 0 8 5 amappl15 192 272 0 263 1 0 1 1 0 8 0 amappl14 184 97 0 93 1 0 1 1 0 8 0 amappl13 176 106 0 103 1 0 1 1 0 8 0 amappl12 168 30 0 25 1 0 1 1 0 8 0 amappl11 160 256 0 234 1 0 1 1 0 8 0 amappl10 152 101 0 96 1 0 1 1 0 8 0 amappl9 144 606 0 600 1 0 1 1 0 8 0 amappl8 136 675 0 613 3 0 3 3 0 8 0 amappl7 128 146 0 125 1 0 1 1 0 8 0 amappl6 120 354 0 339 2 1 1 2 0 8 0 amappl5 112 569 0 549 1 0 1 1 0 8 0 amappl4 104 1252 0 1213 2 0 2 2 0 8 0 amappl3 96 2361 0 2307 2 0 2 2 0 8 0 amappl2 88 481 0 444 2 0 2 2 0 8 0 amappl1 80 26791 0 26080 20 3 17 20 0 8 0 amappl 88 5526 0 5349 5 0 5 5 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 9 0 3 1 0 1 1 0 8 0 uaddrrnd 24 1014 0 983 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1014 0 983 1 0 1 1 0 8 0 vmmpekpl 168 12834 0 12765 4 0 4 4 0 8 0 vmmpepl 168 103381 0 100711 162 29 133 134 0 357 12 vmsppl 368 1013 0 983 4 0 4 4 0 8 0 rwobjpl 56 29287 0 24690 66 0 66 66 0 8 0 pdppl 4096 2035 0 1966 149 78 71 81 0 8 2 pvpl 32 476521 0 456421 267 84 183 243 0 265 0 pmappl 248 1013 0 983 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 824 0 95 21 0 21 21 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace rc4_keysetup(ffff80002feaf7da,ffff80002feaf8ec,0) at rc4_keysetup+0xaf sys/crypto/arc4.c:41 pipex_mppe_init(ffff80002feaf7a0,ffffdc60,6c59,ffff800000c4226c,ffffdc60) at pipex_mppe_init+0x212 sys/net/pipex.c:2319 pipex_init_session(ffff80002fecfa88,ffff800000c42000) at pipex_init_session+0x5e1 pipex_session_init_mppe_recv sys/net/pipex.c:2327 [inline] pipex_init_session(ffff80002fecfa88,ffff800000c42000) at pipex_init_session+0x5e1 sys/net/pipex.c:385 pppacioctl(4486337,82907003,ffff800000c42000,1,ffff80002b053270) at pppacioctl+0x156 pppac_add_session sys/net/if_pppx.c:1315 [inline] pppacioctl(4486337,82907003,ffff800000c42000,1,ffff80002b053270) at pppacioctl+0x156 sys/net/if_pppx.c:1165 VOP_IOCTL(fffffd80675bf6f8,82907003,ffff800000c42000,1,fffffd807f7d7478,ffff80002b053270) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8067581988,82907003,ffff800000c42000,ffff80002b053270) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:525 sys_ioctl(ffff80002b053270,ffff80002fecfdd8,ffff80002fecfe20) at sys_ioctl+0x4a2 syscall(ffff80002fecfea0) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002fecfea0) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3128afe3f40, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020dd8ff0) 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(ffffffff82ad6e50) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82ad6e50) at __mp_lock+0x122 sys/kern/kern_lock.c:147 syscall(ffff80002fee5130) at syscall+0x41d mi_syscall sys/sys/syscall_mi.h:100 [inline] syscall(ffff80002fee5130) at syscall+0x41d sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd3e50, count: -6