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(ffff80002fe9b2f2,ffff80002fe9b404,0) at rc4_keysetup+0xaf sys/crypto/arc4.c:41 pipex_mppe_init(ffff80002fe9b2b8,ffffdcd5,334a,ffff800000c76a6c,ffffdcd5) at pipex_mppe_init+0x212 sys/net/pipex.c:2319 pipex_init_session(ffff80002fe8ae68,ffff800000c76800) at pipex_init_session+0x5e1 pipex_session_init_mppe_recv sys/net/pipex.c:2327 [inline] pipex_init_session(ffff80002fe8ae68,ffff800000c76800) at pipex_init_session+0x5e1 sys/net/pipex.c:385 pppacioctl(4086334,82907003,ffff800000c76800,1,ffff80002b0562b0) at pppacioctl+0x156 pppac_add_session sys/net/if_pppx.c:1316 [inline] pppacioctl(4086334,82907003,ffff800000c76800,1,ffff80002b0562b0) at pppacioctl+0x156 sys/net/if_pppx.c:1166 VOP_IOCTL(fffffd8068f3d130,82907003,ffff800000c76800,1,fffffd807f7d7410,ffff80002b0562b0) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd80650e7a38,82907003,ffff800000c76800,ffff80002b0562b0) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:525 sys_ioctl(ffff80002b0562b0,ffff80002fe8b1b8,ffff80002fe8b200) at sys_ioctl+0x4a2 syscall(ffff80002fe8b280) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002fe8b280) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3b6c79ac600, count: -9 ddb{0}> show registers rdi 0xffff800028a07000 rsi 0 rbp 0xffff80002fe8acf0 rbx 0 rdx 0 rcx 0 rax 0x1 r8 0x60 r9 0x2f2d33bf r10 0xdd636c3f23c1876 r11 0xa5b767a9ed4818bc r12 0xffff80002fe9b404 r13 0 r14 0xffff80002fe9b2f2 r15 0 rip 0xffffffff82440a2f rc4_keysetup+0xaf cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002fe8ac90 ss 0x10 rc4_keysetup+0xaf: divl 0xffffffffffffffac(%rbp),%eax ddb{0}> show proc PROC (syz-executor.4) pid=48914 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=67, nice=20 forw=0xffffffffffffffff, list=0xffff80002b057270,0xffff80002b057d00 process=0xffff80002aa16dd0 user=0xffff80002fe86000, vmspace=0xfffffd80665ae468 estcpu=34, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 44000 374923 18384 0 2 0 syz-executor.7 44000 354349 18384 0 3 0x4000080 fsleep syz-executor.7 12068 442579 4662 60928 2 0x10 syz-executor.6 12068 31879 4662 60928 3 0x4000090 fsleep syz-executor.6 94514 516574 82619 0 2 0x81000 syz-executor.5 94514 486772 82619 0 3 0x4003000 suspend syz-executor.5 19068 64931 63117 0 2 0 syz-executor.3 19068 220263 63117 0 3 0x4000080 fsleep syz-executor.3 71080 306887 61723 0 2 0 syz-executor.0 71080 64834 61723 0 3 0x4000080 fsleep syz-executor.0 85819 460821 43642 0 2 0 syz-executor.4 *85819 48914 43642 0 7 0x4000000 syz-executor.4 78463 421400 1447 0 2 0 syz-executor.2 78463 368110 1447 0 2 0x4000000 syz-executor.2 49717 232390 0 0 3 0x14200 acct acct 82619 255107 211 0 3 0x82 nanoslp syz-executor.5 13865 486284 48783 0 3 0x100082 netio ndp 48783 330486 1 0 3 0x10008a sigsusp sh 18384 8732 211 0 3 0x82 nanoslp syz-executor.7 4662 476942 211 0 3 0x82 nanoslp syz-executor.6 43642 319645 211 0 3 0x82 nanoslp syz-executor.4 1447 307489 211 0 2 0x482 syz-executor.2 63117 453374 211 0 3 0x82 nanoslp syz-executor.3 85562 480077 211 0 2 0x482 syz-executor.1 61723 200053 211 0 3 0x82 nanoslp syz-executor.0 211 465650 61124 0 3 0x82 wait syz-fuzzer 211 281108 61124 0 3 0x4000082 thrsleep syz-fuzzer 211 114645 61124 0 3 0x4000082 thrsleep syz-fuzzer 211 86225 61124 0 3 0x4000082 wait syz-fuzzer 211 497192 61124 0 3 0x4000082 wait syz-fuzzer 211 410107 61124 0 3 0x4000082 thrsleep syz-fuzzer 211 282303 61124 0 3 0x4000082 wait syz-fuzzer 211 121968 61124 0 3 0x4000082 wait syz-fuzzer 211 92801 61124 0 3 0x4000082 thrsleep syz-fuzzer 211 254519 61124 0 3 0x4000082 kqread syz-fuzzer 211 384834 61124 0 3 0x4000082 wait syz-fuzzer 211 317745 61124 0 3 0x4000082 wait syz-fuzzer 211 473898 61124 0 3 0x4000082 thrsleep syz-fuzzer 211 504594 61124 0 3 0x4000082 wait syz-fuzzer 211 334984 61124 0 3 0x4000082 thrsleep syz-fuzzer 61124 4613 83958 0 3 0x10008a sigsusp ksh 83958 35549 88213 0 3 0x9a kqread sshd 85722 270715 1 0 3 0x100083 ttyin getty 88213 345470 1 0 3 0x88 kqread sshd 65653 222594 22273 74 3 0x1100092 bpf pflogd 22273 241423 1 0 3 0x80 netio pflogd 60092 160082 98719 73 3 0x1100090 kqread syslogd 98719 59913 1 0 3 0x100082 netio syslogd 75388 207297 1 0 3 0x100080 kqread resolvd 22843 402150 74656 77 3 0x100092 kqread dhcpleased 33902 132325 74656 77 3 0x100092 kqread dhcpleased 74656 36793 1 0 3 0x80 kqread dhcpleased 97110 400364 0 0 3 0x14200 bored smr 6474 168064 0 0 2 0x14200 zerothread 16158 165318 0 0 3 0x14200 aiodoned aiodoned 74818 199743 0 0 3 0x14200 syncer update 27057 243503 0 0 3 0x14200 cleaner cleaner 54845 433624 0 0 3 0x14200 reaper reaper 16109 283753 0 0 3 0x14200 pgdaemon pagedaemon 56911 20242 0 0 3 0x14200 bored viomb 16291 338423 0 0 3 0x40014200 acpi0 acpi0 16911 127073 0 0 7 0x40014200 idle1 30157 457627 0 0 3 0x14200 bored softnet 580 507253 0 0 3 0x14200 bored softnet 91029 407960 0 0 3 0x14200 bored softnet 58338 311712 0 0 3 0x14200 bored softnet 26733 440383 0 0 3 0x14200 bored systqmp 52020 454856 0 0 3 0x14200 bored systq 47735 320685 0 0 3 0x40014200 bored softclock 740 270451 0 0 3 0x40014200 idle0 1 344509 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 85819 (syz-executor.4) thread 0xffff80002b0562b0 (48914) 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 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10189 6477K 6671K 78643K 11431 0 pcb 16 8K 8K 78643K 53 0 rtable 234 6K 6K 78643K 373 0 ifaddr 91 17K 17K 78643K 103 0 sysctl 2 0K 0K 78643K 2 0 counters 60 36K 36K 78643K 62 0 ioctlops 1 1K 4K 78643K 1493 0 iov 0 0K 0K 78643K 102 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1288 80K 80K 78643K 1345 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 5 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 63 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 19 69K 85K 78643K 310 0 proc 69 91K 128K 78643K 545 0 subproc 117 7K 7K 78643K 117 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 3 0 in_multi 99 6K 7K 78643K 122 0 ether_multi 1 0K 0K 78643K 7 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 67 307K 307K 78643K 67 0 exec 0 0K 2K 78643K 738 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 273 657K 657K 78643K 3352 0 UVM aobj 3 2K 2K 78643K 3 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 13 0K 2K 78643K 32 0 temp 91 4712K 4776K 78643K 4124 0 kqueue 12 18K 20K 78643K 28 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 35 0 31 1 0 1 1 0 8 0 rtentry 112 121 0 11 4 0 4 4 0 8 0 unpcb 144 70 0 55 1 0 1 1 0 8 0 syncache 296 4 0 4 1 1 0 1 0 8 0 tcpcb 768 17 0 13 2 0 2 2 0 8 1 arp 120 20 0 2 1 0 1 1 0 8 0 inpcb 368 114 0 104 2 0 2 2 0 8 1 nd6 48 26 0 2 1 0 1 1 0 8 0 kcovpl 48 9 0 0 1 0 1 1 0 8 0 mppekey 1024 1 0 0 1 0 1 1 0 8 0 ppxss 1256 2 0 0 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 29 0 20 1 0 1 1 0 8 0 pfstkey 120 29 0 20 1 0 1 1 0 8 0 pfstate 336 29 0 20 2 1 1 2 0 8 0 pfrule 1360 25 0 20 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 496 0 43 29 0 29 29 0 8 0 art_table 32 497 0 43 4 0 4 4 0 8 0 art_node 16 120 0 20 1 0 1 1 0 8 0 semupl 112 6 0 6 1 0 1 1 0 8 1 semapl 112 61 0 51 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1680 0 240 91 0 91 91 0 8 0 ffsino 272 1680 0 240 97 0 97 97 0 8 0 nchpl 144 2202 0 552 63 0 63 63 0 8 0 uvmvnodes 80 1846 0 0 38 0 38 38 0 8 0 vnodes 216 1846 0 0 103 0 103 103 0 8 0 namei 1024 7759 0 7759 3 2 1 2 0 8 1 percpumem 16 43 0 1 1 0 1 1 0 8 0 kstatmem 264 28 0 2 2 0 2 2 0 8 0 scxspl 216 6709 0 6709 12 11 1 8 0 8 1 plimitpl 152 32 0 16 1 0 1 1 0 8 0 sigapl 424 612 0 561 8 1 7 7 0 8 0 futexpl 64 1550 0 1546 2 1 1 1 0 8 0 knotepl 120 104 0 0 4 0 4 4 0 8 0 kqueuepl 216 24 0 16 1 0 1 1 0 8 0 pipepl 320 190 0 159 6 0 6 6 0 8 3 fdescpl 496 594 0 562 5 0 5 5 0 8 0 filepl 152 2422 0 2161 14 1 13 13 0 8 2 lockfpl 104 92 0 90 1 0 1 1 0 8 0 lockfspl 48 14 0 12 1 0 1 1 0 8 0 sessionpl 144 25 0 7 1 0 1 1 0 8 0 pgrppl 48 25 0 7 1 0 1 1 0 8 0 ucredpl 104 191 0 178 1 0 1 1 0 8 0 zombiepl 144 563 0 561 2 1 1 1 0 8 0 processpl 1064 612 0 561 4 0 4 4 0 8 0 procpl 672 972 0 900 10 2 8 8 0 8 1 srpgc 96 2 0 2 1 0 1 1 0 8 1 sockpl 488 219 0 190 5 0 5 5 0 8 1 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 8 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 386 0 0 48 0 48 48 0 8 0 mtagpl 96 9 0 0 1 0 1 1 0 8 0 mbufpl 256 433 0 0 27 0 27 27 0 8 0 bufpl 288 3824 0 136 264 0 264 264 0 8 0 anonpl 24 95005 0 78518 102 1 101 101 0 186 0 amapchunkpl 152 24655 0 15719 402 57 345 345 0 158 0 amappl16 200 982 0 489 28 1 27 27 0 8 0 amappl15 192 134 0 124 1 0 1 1 0 8 0 amappl14 184 53 0 48 1 0 1 1 0 8 0 amappl13 176 142 0 137 1 0 1 1 0 8 0 amappl12 168 62 0 54 1 0 1 1 0 8 0 amappl11 160 106 0 84 1 0 1 1 0 8 0 amappl10 152 38 0 31 1 0 1 1 0 8 0 amappl9 144 492 0 488 1 0 1 1 0 8 0 amappl8 136 598 0 545 2 0 2 2 0 8 0 amappl7 128 128 0 106 1 0 1 1 0 8 0 amappl6 120 192 0 182 2 1 1 2 0 8 0 amappl5 112 226 0 207 1 0 1 1 0 8 0 amappl4 104 925 0 888 2 0 2 2 0 8 0 amappl3 96 1183 0 1117 2 0 2 2 0 8 0 amappl2 88 538 0 496 2 1 1 2 0 8 0 amappl1 80 16214 0 15455 21 4 17 20 0 8 0 amappl 88 2863 0 2680 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 595 0 563 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 595 0 563 1 0 1 1 0 8 0 vmmpekpl 168 9367 0 9309 3 0 3 3 0 8 0 vmmpepl 168 61051 0 58315 141 17 124 125 0 357 3 vmsppl 368 594 0 563 4 0 4 4 0 8 0 rwobjpl 56 17481 0 14004 51 1 50 50 0 8 0 pdppl 4096 1197 0 1126 117 44 73 81 0 8 2 pvpl 32 304013 0 282787 256 68 188 255 0 265 14 pmappl 248 594 0 563 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 699 0 50 19 0 19 19 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace rc4_keysetup(ffff80002fe9b2f2,ffff80002fe9b404,0) at rc4_keysetup+0xaf sys/crypto/arc4.c:41 pipex_mppe_init(ffff80002fe9b2b8,ffffdcd5,334a,ffff800000c76a6c,ffffdcd5) at pipex_mppe_init+0x212 sys/net/pipex.c:2319 pipex_init_session(ffff80002fe8ae68,ffff800000c76800) at pipex_init_session+0x5e1 pipex_session_init_mppe_recv sys/net/pipex.c:2327 [inline] pipex_init_session(ffff80002fe8ae68,ffff800000c76800) at pipex_init_session+0x5e1 sys/net/pipex.c:385 pppacioctl(4086334,82907003,ffff800000c76800,1,ffff80002b0562b0) at pppacioctl+0x156 pppac_add_session sys/net/if_pppx.c:1316 [inline] pppacioctl(4086334,82907003,ffff800000c76800,1,ffff80002b0562b0) at pppacioctl+0x156 sys/net/if_pppx.c:1166 VOP_IOCTL(fffffd8068f3d130,82907003,ffff800000c76800,1,fffffd807f7d7410,ffff80002b0562b0) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd80650e7a38,82907003,ffff800000c76800,ffff80002b0562b0) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:525 sys_ioctl(ffff80002b0562b0,ffff80002fe8b1b8,ffff80002fe8b200) at sys_ioctl+0x4a2 syscall(ffff80002fe8b280) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002fe8b280) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3b6c79ac600, 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 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020dd8ff0) at sched_idle+0x417 sys/kern/kern_sched.c:175 end trace frame: 0x0, count: -5