panic: mallocarray: overflow 18446744071562067968 * 8 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 421184 49010 0 0 0 0 syz-executor.1 *109539 49010 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(fffffd807c87c1d8,80085761,ffff800020c553d0,3,fffffd807f7c6960,ffff800020b39530) at VOP_IOCTL+0x9a sys/kern/vfs_vops.c:290 vn_ioctl(fffffd807c445dc0,80085761,ffff800020c553d0,ffff800020b39530) at vn_ioctl+0xc9 sys/kern/vfs_vnops.c:512 sys_ioctl(ffff800020b39530,ffff800020c55518,ffff800020c55500) at sys_ioctl+0x651 syscall(ffff800020c555b0) at syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(ffff800020c555b0) at syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,0,ffffffffffffff86,0,3,f2b9f254010) at Xsyscall+0x128 end of kernel end trace frame: 0xf2de4c43850, 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(fffffd807c87c1d8,80085761,ffff800020c553d0,3,fffffd807f7c6960,ffff800020b39530) at VOP_IOCTL+0x9a sys/kern/vfs_vops.c:290 vn_ioctl(fffffd807c445dc0,80085761,ffff800020c553d0,ffff800020b39530) at vn_ioctl+0xc9 sys/kern/vfs_vnops.c:512 sys_ioctl(ffff800020b39530,ffff800020c55518,ffff800020c55500) at sys_ioctl+0x651 syscall(ffff800020c555b0) at syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(ffff800020c555b0) at syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,0,ffffffffffffff86,0,3,f2b9f254010) at Xsyscall+0x128 end of kernel end trace frame: 0xf2de4c43850, count: -10 ddb{1}> show registers rdi 0xffffffff814367b7 db_enter+0x17 rsi 0x1478 __ALIGN_SIZE+0x478 rbp 0xffff800020c55010 rbx 0xffff800020c550c0 rdx 0x1479 __ALIGN_SIZE+0x479 rcx 0xffff800002b66000 rax 0xffff800002b66000 r8 0xffffffff818d1a13 kprintf+0x183 r9 0x1 r10 0x25 r11 0xdef1f57d0c1aa256 r12 0x3000000008 r13 0xffff800020c55020 r14 0x100 r15 0x1 rip 0xffffffff814367b8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020c55000 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.1) pid=109539 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020b38978,0xffffffff82393cf8 process=0xffff800020b8c018 user=0xffff800020c50000, vmspace=0xfffffd807effd870 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 49010 421184 1419 0 7 0 syz-executor.1 *49010 109539 1419 0 7 0x4000000 syz-executor.1 75459 77697 13445 0 3 0x80 nanosleep syz-executor.0 75459 299765 13445 0 3 0x4000080 netio syz-executor.0 75459 138375 13445 0 3 0x4000080 fsleep syz-executor.0 83310 217362 0 0 3 0x14200 bored sosplice 1419 150761 64277 0 3 0x82 nanosleep syz-executor.1 13445 203599 64277 0 3 0x82 nanosleep syz-executor.0 64277 52079 32055 0 3 0x82 thrsleep syz-fuzzer 64277 80921 32055 0 3 0x4000082 nanosleep syz-fuzzer 64277 331271 32055 0 3 0x4000082 thrsleep syz-fuzzer 64277 101405 32055 0 3 0x4000082 thrsleep syz-fuzzer 64277 247832 32055 0 3 0x4000082 thrsleep syz-fuzzer 64277 207815 32055 0 3 0x4000082 thrsleep syz-fuzzer 64277 255071 32055 0 3 0x4000082 thrsleep syz-fuzzer 64277 273420 32055 0 3 0x4000082 kqread syz-fuzzer 64277 499387 32055 0 3 0x4000082 thrsleep syz-fuzzer 64277 206911 32055 0 3 0x4000082 thrsleep syz-fuzzer 32055 480501 51560 0 3 0x10008a pause ksh 51560 181616 83655 0 3 0x92 select sshd 53202 447540 1 0 3 0x100083 ttyin getty 83655 28309 1 0 3 0x80 select sshd 48298 497405 79205 74 3 0x100092 bpf pflogd 79205 458656 1 0 3 0x80 netio pflogd 22711 415751 39286 73 3 0x100090 kqread syslogd 39286 329107 1 0 3 0x100082 netio syslogd 77864 477627 1 77 3 0x100090 poll dhclient 4421 493268 1 0 3 0x80 poll dhclient 15896 521599 0 0 3 0x14200 pgzero zerothread 87459 191259 0 0 3 0x14200 aiodoned aiodoned 72097 262821 0 0 3 0x14200 syncer update 46586 45088 0 0 3 0x14200 cleaner cleaner 27173 468793 0 0 3 0x14200 reaper reaper 77500 481930 0 0 3 0x14200 pgdaemon pagedaemon 38618 91056 0 0 3 0x14200 bored crynlk 87888 194144 0 0 3 0x14200 bored crypto 89180 57173 0 0 3 0x40014200 acpi0 acpi0 91957 140820 0 0 3 0x40014200 idle1 47242 152812 0 0 3 0x14200 bored softnet 9295 363172 0 0 3 0x14200 bored systqmp 90142 54110 0 0 3 0x14200 bored systq 87048 125130 0 0 3 0x40014200 bored softclock 90168 424527 0 0 3 0x40014200 idle0 44624 212919 0 0 3 0x14200 bored smr 1 393817 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 49010 (syz-executor.1) thread 0xffff800020b39530 (109539) 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 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9494 6412K 6420K 78643K 10697 0 0 pcb 25 9K 10K 78643K 206 0 0 rtable 100 3K 4K 78643K 272 0 0 ifaddr 49 12K 12K 78643K 98 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1475 0 0 iov 0 0K 12K 78643K 30 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1200 75K 75K 78643K 1359 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 7 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 12 0K 0K 78643K 23 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12628 0 0 file desc 6 17K 21K 78643K 277 0 0 sigio 0 0K 0K 78643K 4 0 0 proc 53 50K 71K 78643K 355 0 0 subproc 64 65538K 67586K 78643K 68 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 41 0 0 in_multi 33 2K 2K 78643K 46 0 0 ether_multi 1 0K 0K 78643K 6 0 0 mrt 0 0K 0K 78643K 4 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 60 265K 265K 78643K 60 0 0 exec 0 0K 1K 78643K 207 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 86 20K 25K 78643K 1743 0 0 UVM aobj 19 4K 4K 78643K 19 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 35 0 0 NDP 9 0K 0K 78643K 26 0 0 temp 121 2367K 2432K 78643K 3933 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 4 0 0 1 0 1 1 0 8 0 inpcbpl 280 189 0 181 1 0 1 1 0 8 0 plimitpl 152 25 0 17 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtentry 112 42 0 2 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpcb 544 61 0 57 1 0 1 1 0 8 0 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 4 0 0 1 0 1 1 0 8 0 ppxss 1128 7 0 7 1 0 1 1 0 8 1 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 15 0 7 1 0 1 1 0 8 0 pfstkey 112 15 0 7 1 0 1 1 0 8 0 pfstate 328 15 0 7 2 0 2 2 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 256 185 0 0 12 0 12 12 0 8 0 art_table 32 186 0 0 2 0 2 2 0 8 0 art_node 16 41 0 7 1 0 1 1 0 8 0 semapl 112 21 0 11 1 0 1 1 0 8 0 shmpl 112 17 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1941 0 528 46 0 46 46 0 8 0 ffsino 272 1941 0 528 95 0 95 95 0 8 0 nchpl 144 2544 0 912 61 0 61 61 0 8 0 uvmvnodes 72 2005 0 0 37 0 37 37 0 8 0 vnodes 200 2005 0 0 106 0 106 106 0 8 0 namei 1024 7046 0 7046 2 1 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scsiplug 64 1 0 1 1 1 0 1 0 8 0 scxspl 192 6995 0 6995 7 6 1 6 0 8 1 sigapl 432 476 0 460 2 0 2 2 0 8 0 futexpl 56 3159 0 3158 1 0 1 1 0 8 0 knotepl 112 109 0 90 1 0 1 1 0 8 0 kqueuepl 104 90 0 88 1 0 1 1 0 8 0 pipepl 112 368 0 349 3 2 1 2 0 8 0 fdescpl 488 477 0 460 3 0 3 3 0 8 0 filepl 152 2852 0 2751 5 0 5 5 0 8 1 lockfpl 104 99 0 99 2 1 1 1 0 8 1 lockfspl 32 122 0 122 2 1 1 1 0 8 1 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 22 0 11 1 0 1 1 0 8 0 ucredpl 96 544 0 535 1 0 1 1 0 8 0 zombiepl 144 460 0 460 2 1 1 1 0 8 1 processpl 840 493 0 460 4 0 4 4 0 8 0 procpl 600 1091 0 1046 4 0 4 4 0 8 0 srpgc 64 1 0 1 1 1 0 1 0 8 0 sosppl 128 9 0 9 2 1 1 1 0 8 1 sockpl 384 348 0 328 3 0 3 3 0 8 1 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 147 0 0 18 0 18 18 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 164 0 0 10 0 10 10 0 8 0 bufpl 256 6454 0 1143 332 0 332 332 0 8 0 anonpl 16 56663 0 47604 54 4 50 52 0 125 13 amapchunkpl 152 2634 0 2532 13 4 9 10 0 158 4 amappl16 192 1920 0 1446 35 6 29 35 0 8 5 amappl15 184 57 0 53 1 0 1 1 0 8 0 amappl14 176 22 0 20 2 1 1 1 0 8 0 amappl13 168 26 0 23 1 0 1 1 0 8 0 amappl12 160 144 0 141 1 0 1 1 0 8 0 amappl11 152 159 0 140 1 0 1 1 0 8 0 amappl10 144 75 0 69 1 0 1 1 0 8 0 amappl9 136 580 0 577 1 0 1 1 0 8 0 amappl8 128 130 0 116 1 0 1 1 0 8 0 amappl7 120 27 0 25 1 0 1 1 0 8 0 amappl6 112 184 0 176 1 0 1 1 0 8 0 amappl5 104 245 0 230 1 0 1 1 0 8 0 amappl4 96 706 0 672 2 1 1 2 0 8 0 amappl3 88 126 0 121 1 0 1 1 0 8 0 amappl2 80 3032 0 2969 2 0 2 2 0 8 0 amappl1 72 19849 0 19387 26 16 10 20 0 8 0 amappl 72 1329 0 1289 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 18 0 0 1 0 1 1 0 8 0 uaddrrnd 24 477 0 460 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 477 0 460 1 0 1 1 0 8 0 vmmpekpl 168 8092 0 8066 2 0 2 2 0 8 0 vmmpepl 168 57689 0 56116 98 21 77 79 0 357 8 vmsppl 360 476 0 460 2 0 2 2 0 8 0 pdppl 4096 962 0 920 6 0 6 6 0 8 0 pvpl 32 184447 0 172063 143 11 132 134 0 265 32 pmappl 224 476 0 460 2 1 1 2 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 487 0 4 14 0 14 14 0 8 0