panic: mallocarray: overflow 18446744071562067968 * 8 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 191348 23772 0 0 0 0 syz-executor.1 *190230 23772 0 0 0x4000000 1K syz-executor.1 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic() at panic+0x174 sys/kern/subr_prf.c:208 ixgbe_init_ops_generic(ffffffff80000000) at ixgbe_init_ops_generic wsmux_getmux(7fffffff) at wsmux_getmux+0x71 sys/dev/wscons/wsmux.c:152 wsmux_add_mux(7fffffff,ffff800000026d00) at wsmux_add_mux+0x2f sys/dev/wscons/wsmux.c:594 VOP_IOCTL(fffffd8064ac2438,80085761,ffff800020c20e60,42,fffffd807f7c67e0,ffff800020b75530) at VOP_IOCTL+0x9a sys/kern/vfs_vops.c:290 vn_ioctl(fffffd8066d89278,80085761,ffff800020c20e60,ffff800020b75530) at vn_ioctl+0xc9 sys/kern/vfs_vnops.c:512 sys_ioctl(ffff800020b75530,ffff800020c20fa8,ffff800020c20f90) at sys_ioctl+0x651 syscall(ffff800020c21040) at syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(ffff800020c21040) at syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,0,ffffffffffffff86,0,3,c0d276fd010) at Xsyscall+0x128 end of kernel end trace frame: 0xc0f41eda800, count: 5 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic mallocarray: overflow 18446744071562067968 * 8 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic() at panic+0x174 sys/kern/subr_prf.c:208 ixgbe_init_ops_generic(ffffffff80000000) at ixgbe_init_ops_generic wsmux_getmux(7fffffff) at wsmux_getmux+0x71 sys/dev/wscons/wsmux.c:152 wsmux_add_mux(7fffffff,ffff800000026d00) at wsmux_add_mux+0x2f sys/dev/wscons/wsmux.c:594 VOP_IOCTL(fffffd8064ac2438,80085761,ffff800020c20e60,42,fffffd807f7c67e0,ffff800020b75530) at VOP_IOCTL+0x9a sys/kern/vfs_vops.c:290 vn_ioctl(fffffd8066d89278,80085761,ffff800020c20e60,ffff800020b75530) at vn_ioctl+0xc9 sys/kern/vfs_vnops.c:512 sys_ioctl(ffff800020b75530,ffff800020c20fa8,ffff800020c20f90) at sys_ioctl+0x651 syscall(ffff800020c21040) at syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(ffff800020c21040) at syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,0,ffffffffffffff86,0,3,c0d276fd010) at Xsyscall+0x128 end of kernel end trace frame: 0xc0f41eda800, count: -10 ddb{1}> show registers rdi 0xffffffff814367b7 db_enter+0x17 rsi 0x156b __ALIGN_SIZE+0x56b rbp 0xffff800020c20aa0 rbx 0xffff800020c20b50 rdx 0x156c __ALIGN_SIZE+0x56c rcx 0xffff800001366000 rax 0xffff800001366000 r8 0xffffffff818d1a13 kprintf+0x183 r9 0x1 r10 0x25 r11 0x215391ac523e7c13 r12 0x3000000008 r13 0xffff800020c20ab0 r14 0x100 r15 0x1 rip 0xffffffff814367b8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020c20a90 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.1) pid=190230 stat=onproc flags process=0 proc=4000000 pri=82, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff800020b75788,0xffffffff82393cf8 process=0xffff800020b8c9f0 user=0xffff800020c1c000, vmspace=0xfffffd807effd5a0 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 23772 191348 47175 0 7 0 syz-executor.1 *23772 190230 47175 0 7 0x4000000 syz-executor.1 13559 294446 66025 0 3 0x2 biowait syz-executor.0 47175 145236 66025 0 3 0x82 nanosleep syz-executor.1 31076 82809 0 0 3 0x14200 bored sosplice 66025 293940 49701 0 3 0x82 thrsleep syz-fuzzer 66025 177558 49701 0 3 0x4000082 nanosleep syz-fuzzer 66025 53154 49701 0 3 0x4000082 thrsleep syz-fuzzer 66025 202832 49701 0 3 0x4000082 thrsleep syz-fuzzer 66025 69493 49701 0 3 0x4000082 thrsleep syz-fuzzer 66025 310256 49701 0 3 0x4000082 kqread syz-fuzzer 66025 63599 49701 0 3 0x4000082 thrsleep syz-fuzzer 66025 105089 49701 0 3 0x4000082 thrsleep syz-fuzzer 66025 159158 49701 0 3 0x4000082 thrsleep syz-fuzzer 66025 515060 49701 0 3 0x4000082 thrsleep syz-fuzzer 49701 139265 91726 0 3 0x10008a pause ksh 91726 474401 18884 0 3 0x92 select sshd 66199 362420 1 0 3 0x100083 ttyin getty 18884 30533 1 0 3 0x80 select sshd 51944 409554 95386 74 3 0x100092 bpf pflogd 95386 213965 1 0 3 0x80 netio pflogd 67069 49942 12784 73 3 0x100090 kqread syslogd 12784 34626 1 0 3 0x100082 netio syslogd 77008 256876 1 77 3 0x100090 poll dhclient 98843 200954 1 0 3 0x80 poll dhclient 69828 360403 0 0 3 0x14200 pgzero zerothread 76320 155545 0 0 3 0x14200 aiodoned aiodoned 2275 137716 0 0 3 0x14200 syncer update 58614 106635 0 0 3 0x14200 cleaner cleaner 161 517219 0 0 3 0x14200 reaper reaper 65539 334179 0 0 3 0x14200 pgdaemon pagedaemon 3446 493717 0 0 3 0x14200 bored crynlk 60922 16407 0 0 3 0x14200 bored crypto 7619 439808 0 0 3 0x40014200 acpi0 acpi0 60986 244979 0 0 3 0x40014200 idle1 28141 214997 0 0 3 0x14200 bored softnet 87150 209869 0 0 3 0x14200 bored systqmp 68979 378969 0 0 3 0x14200 bored systq 545 157257 0 0 3 0x40014200 bored softclock 4671 487529 0 0 3 0x40014200 idle0 74991 128698 0 0 3 0x14200 bored smr 1 300754 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 23772 (syz-executor.1) thread 0xffff800020b75530 (190230) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82349ce8) locked @ /syzkaller/managers/multicore/kernel/sys/sys/syscall_mi.h:90 #0 witness_lock+0x594 sys/kern/subr_witness.c:1201 #1 syscall+0x48b mi_syscall sys/sys/syscall_mi.h:91 [inline] #1 syscall+0x48b sys/arch/amd64/amd64/trap.c:574 #2 Xsyscall+0x128 Process 13559 (syz-executor.0) thread 0xffff800020b74270 (294446) exclusive rrwlock inode r = 0 (0xfffffd8079b7bc58) locked @ /syzkaller/managers/multicore/kernel/sys/ufs/ufs/ufs_vnops.c:1547 #0 witness_lock+0x594 sys/kern/subr_witness.c:1201 #1 _rw_enter+0x45d sys/kern/kern_rwlock.c:280 #2 _rrw_enter+0x60 sys/kern/kern_rwlock.c:410 #3 VOP_LOCK+0x57 sys/kern/vfs_vops.c:602 #4 vn_lock+0x6e sys/kern/vfs_vnops.c:549 #5 vget+0x1c3 sys/kern/vfs_subr.c:672 #6 ufs_ihashget+0x151 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x84 sys/ufs/ffs/ffs_vfsops.c:1323 #8 ufs_lookup+0x15d3 sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x67 sys/kern/vfs_vops.c:90 #10 vfs_lookup+0x556 sys/kern/vfs_lookup.c:523 #11 namei+0x4b2 sys/kern/vfs_lookup.c:224 #12 dounlinkat+0xa5 sys/kern/vfs_syscalls.c:1673 #13 syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] #13 syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8068fd1b38) locked @ /syzkaller/managers/multicore/kernel/sys/ufs/ufs/ufs_vnops.c:1547 #0 witness_lock+0x594 sys/kern/subr_witness.c:1201 #1 _rw_enter+0x45d sys/kern/kern_rwlock.c:280 #2 _rrw_enter+0x60 sys/kern/kern_rwlock.c:410 #3 VOP_LOCK+0x57 sys/kern/vfs_vops.c:602 #4 vn_lock+0x6e sys/kern/vfs_vnops.c:549 #5 vfs_lookup+0xf5 sys/kern/vfs_lookup.c:387 #6 namei+0x4b2 sys/kern/vfs_lookup.c:224 #7 dounlinkat+0xa5 sys/kern/vfs_syscalls.c:1673 #8 syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] #8 syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9522 6422K 6430K 78643K 10913 0 0 pcb 25 9K 10K 78643K 431 0 0 rtable 103 4K 4K 78643K 701 0 0 ifaddr 58 13K 14K 78643K 227 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1492 0 0 iov 0 0K 24K 78643K 98 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1203 75K 76K 78643K 1726 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 5K 78643K 13 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 12 0K 1K 78643K 84 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12628 0 0 file desc 5 13K 21K 78643K 722 0 0 sigio 0 0K 0K 78643K 7 0 0 proc 53 50K 71K 78643K 574 0 0 subproc 64 65538K 67586K 78643K 378 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 ip_moptions 0 0K 0K 78643K 72 0 0 in_multi 33 2K 2K 78643K 149 0 0 ether_multi 1 0K 0K 78643K 9 0 0 mrt 0 0K 0K 78643K 6 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 66 291K 291K 78643K 66 0 0 exec 0 0K 1K 78643K 297 0 0 pfkey data 0 0K 1K 78643K 4 0 0 pagedep 1 8K 8K 78643K 1 0 0 inodedep 1 32K 32K 78643K 1 0 0 newblk 1 0K 0K 78643K 1 0 0 VM swap 7 26K 26K 78643K 7 0 0 UVM amap 84 20K 25K 78643K 3176 0 0 UVM aobj 26 2K 2K 78643K 33 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 0K 78643K 37 0 0 NDP 12 0K 0K 78643K 73 0 0 temp 174 2379K 2447K 78643K 5778 0 0 kqueue 0 0K 0K 78643K 9 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 13 0 9 1 0 1 1 0 8 0 inpcbpl 280 410 0 403 1 0 1 1 0 8 0 plimitpl 152 53 0 45 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtentry 112 127 0 87 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 13 0 13 1 1 0 1 0 8 0 tcpcb 544 146 0 142 1 0 1 1 0 8 0 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 22 0 18 1 0 1 1 0 8 0 ppxss 1128 22 0 22 4 3 1 1 0 8 1 pffrent 40 2 0 2 1 1 0 1 0 8 0 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 26 0 19 1 0 1 1 0 8 0 pfstkey 112 26 0 19 1 0 1 1 0 8 0 pfstate 328 26 0 19 1 0 1 1 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 256 560 0 372 12 0 12 12 0 8 0 art_table 32 561 0 372 2 0 2 2 0 8 0 art_node 16 122 0 88 1 0 1 1 0 8 0 sysvmsgpl 40 20 0 9 1 0 1 1 0 8 0 semapl 112 82 0 72 1 0 1 1 0 8 0 shmpl 112 31 0 7 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2667 0 1216 48 1 47 47 0 8 0 ffsino 272 2667 0 1216 97 0 97 97 0 8 0 nchpl 144 3875 0 2223 62 0 62 62 0 8 0 uvmvnodes 72 2932 0 0 54 0 54 54 0 8 0 vnodes 200 2932 0 0 155 0 155 155 0 8 0 namei 1024 11525 0 11525 3 2 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scsiplug 64 4 0 4 2 2 0 1 0 8 0 scxspl 192 10466 0 10465 11 10 1 6 0 8 0 sigapl 432 894 0 879 2 0 2 2 0 8 0 futexpl 56 7846 0 7846 2 1 1 1 0 8 1 knotepl 112 403 0 384 1 0 1 1 0 8 0 kqueuepl 104 196 0 194 1 0 1 1 0 8 0 pipepl 112 618 0 599 2 1 1 1 0 8 0 fdescpl 488 895 0 879 3 0 3 3 0 8 0 filepl 152 5395 0 5294 6 1 5 5 0 8 1 lockfpl 104 183 0 182 5 4 1 1 0 8 0 lockfspl 32 291 0 290 4 3 1 1 0 8 0 sessionpl 112 27 0 16 1 0 1 1 0 8 0 pgrppl 48 31 0 20 1 0 1 1 0 8 0 ucredpl 96 1099 0 1090 1 0 1 1 0 8 0 zombiepl 144 879 0 879 3 2 1 1 0 8 1 processpl 840 911 0 879 4 0 4 4 0 8 0 procpl 600 2318 0 2276 4 0 4 4 0 8 0 srpgc 64 55 0 55 4 4 0 1 0 8 0 sosppl 128 3 0 3 2 1 1 1 0 8 1 sockpl 384 762 0 743 5 2 3 3 0 8 1 mcl64k 65536 256 0 0 32 15 17 32 0 8 1 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 6 0 0 1 0 1 1 0 8 0 mcl9k 9216 7 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 6 0 0 1 0 1 1 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 137 0 0 16 0 16 16 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 342 0 0 21 0 21 21 0 8 0 bufpl 256 7117 0 1146 374 0 374 374 0 8 0 anonpl 16 113828 0 105029 78 36 42 52 0 125 5 amapchunkpl 152 5363 0 5281 20 11 9 9 0 158 5 amappl16 192 4642 0 4181 61 36 25 36 0 8 0 amappl15 184 107 0 103 1 0 1 1 0 8 0 amappl14 176 366 0 360 2 1 1 1 0 8 0 amappl13 168 34 0 30 1 0 1 1 0 8 0 amappl12 160 279 0 275 1 0 1 1 0 8 0 amappl11 152 94 0 79 1 0 1 1 0 8 0 amappl10 144 105 0 101 1 0 1 1 0 8 0 amappl9 136 808 0 805 1 0 1 1 0 8 0 amappl8 128 394 0 377 1 0 1 1 0 8 0 amappl7 120 73 0 67 1 0 1 1 0 8 0 amappl6 112 130 0 124 1 0 1 1 0 8 0 amappl5 104 203 0 189 1 0 1 1 0 8 0 amappl4 96 848 0 821 2 1 1 2 0 8 0 amappl3 88 666 0 655 1 0 1 1 0 8 0 amappl2 80 6424 0 6368 2 0 2 2 0 8 0 amappl1 72 29157 0 28718 26 16 10 20 0 8 0 amappl 72 2625 0 2591 1 0 1 1 0 75 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma64 64 259 0 259 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 17 0 17 1 1 0 1 0 8 0 aobjpl 64 32 0 7 1 0 1 1 0 8 0 uaddrrnd 24 895 0 879 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 895 0 879 1 0 1 1 0 8 0 vmmpekpl 168 11301 0 11274 2 0 2 2 0 8 0 vmmpepl 168 104691 0 103233 128 50 78 95 0 357 10 vmsppl 360 894 0 879 2 0 2 2 0 8 0 pdppl 4096 1798 0 1758 6 0 6 6 0 8 0 pvpl 32 322065 0 309998 170 55 115 131 0 265 14 pmappl 224 894 0 879 4 3 1 2 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 573 0 20 16 0 16 16 0 8 0