Warning: Permanently added '10.128.0.193' (ECDSA) to the list of known hosts. executing program panic: malloc: allocation too large, type = 2, size = 15438862832 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *112202 77815 0 0x2 0 0K syz-executor4929 db_enter() at db_enter+0x18 panic() at panic+0x174 malloc(3983a59f0,2,2) at malloc+0xa6f wsmux_getmux(73074b3d) at wsmux_getmux+0x71 wsmux_do_ioctl(ffff80000069ec00,80085761,ffff800020befbf0,f,ffff800020bd44c0) a t wsmux_do_ioctl+0x28d VOP_IOCTL(fffffd806dc5ca30,80085761,ffff800020befbf0,f,fffffd807f7c7ba0,ffff800 020bd44c0) at VOP_IOCTL+0x9a vn_ioctl(fffffd80731fd1c8,80085761,ffff800020befbf0,ffff800020bd44c0) at vn_ioc tl+0xc9 sys_ioctl(ffff800020bd44c0,ffff800020befd38,ffff800020befd20) at sys_ioctl+0x64 6 syscall(ffff800020befdd0) at syscall+0x5ac Xsyscall(6,0,7f7ffffec898,0,1,7f7ffffec8a8) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffec830, 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{0}> ddb{0}> set $lines = 0 ddb{0}> show panic malloc: allocation too large, type = 2, size = 15438862832 ddb{0}> trace db_enter() at db_enter+0x18 panic() at panic+0x174 malloc(3983a59f0,2,2) at malloc+0xa6f wsmux_getmux(73074b3d) at wsmux_getmux+0x71 wsmux_do_ioctl(ffff80000069ec00,80085761,ffff800020befbf0,f,ffff800020bd44c0) at wsmux_do_ioctl+0x28d VOP_IOCTL(fffffd806dc5ca30,80085761,ffff800020befbf0,f,fffffd807f7c7ba0,ffff800020bd44c0) at VOP_IOCTL+0x9a vn_ioctl(fffffd80731fd1c8,80085761,ffff800020befbf0,ffff800020bd44c0) at vn_ioctl+0xc9 sys_ioctl(ffff800020bd44c0,ffff800020befd38,ffff800020befd20) at sys_ioctl+0x646 syscall(ffff800020befdd0) at syscall+0x5ac Xsyscall(6,0,7f7ffffec898,0,1,7f7ffffec8a8) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffec830, count: -10 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800020bef780 rbx 0xffff800020bef830 rdx 0xffffffff81f5066f cy_pio_rec+0x1490 rcx 0x201 rax 0x1 r8 0xffffffff815047c3 kprintf+0x183 r9 0x1 r10 0x26e2386843c9f6e9 r11 0x85b429483f726a5 r12 0x3000000008 r13 0xffff800020bef790 r14 0x100 r15 0x1 rip 0xffffffff81891478 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020bef770 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor4929) pid=112202 stat=onproc flags process=2 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020bd4970,0xffffffff8230a9a0 process=0xffff800020bba018 user=0xffff800020bea000, vmspace=0xfffffd806e92d710 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND *77815 112202 41275 0 7 0x2 syz-executor4929 41275 314627 50186 0 3 0x10008a pause ksh 50186 142287 59556 0 3 0x92 select sshd 7445 146200 1 0 3 0x100083 ttyin getty 59556 464738 1 0 3 0x80 select sshd 34865 25632 66000 73 3 0x100090 kqread syslogd 66000 58985 1 0 3 0x100082 netio syslogd 75431 243324 1 77 3 0x100090 poll dhclient 20897 397889 1 0 3 0x80 poll dhclient 57697 347456 0 0 3 0x14200 pgzero zerothread 5895 461599 0 0 3 0x14200 aiodoned aiodoned 34890 364419 0 0 3 0x14200 syncer update 37244 374694 0 0 3 0x14200 cleaner cleaner 88347 151621 0 0 3 0x14200 reaper reaper 9967 262998 0 0 3 0x14200 pgdaemon pagedaemon 71409 154503 0 0 3 0x14200 bored crynlk 89022 338566 0 0 3 0x14200 bored crypto 82972 160729 0 0 3 0x40014200 acpi0 acpi0 32774 155687 0 0 7 0x40014200 idle1 23194 208373 0 0 3 0x14200 bored softnet 58042 271992 0 0 3 0x14200 bored systqmp 65331 192154 0 0 3 0x14200 bored systq 3189 18349 0 0 3 0x40014200 bored softclock 41269 138151 0 0 3 0x40014200 idle0 1 43811 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 77815 (syz-executor4929) thread 0xffff800020bd44c0 (112202) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8233f420) locked @ /syzkaller/managers/multicore/kernel/sys/sys/syscall_mi.h:90 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9444 6323K 6323K 78643K 10532 0 0 pcb 23 9K 9K 78643K 55 0 0 rtable 61 2K 2K 78643K 115 0 0 ifaddr 21 7K 7K 78643K 21 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 2K 78643K 13 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1167 73K 73K 78643K 1172 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 1K 78643K 2 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 2 0K 0K 78643K 2 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1792 194K 288K 78643K 12592 0 0 file desc 1 0K 0K 78643K 1 0 0 proc 40 38K 46K 78643K 207 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 in_multi 11 0K 0K 78643K 11 0 0 ether_multi 1 0K 0K 78643K 1 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 18 79K 79K 78643K 18 0 0 exec 0 0K 1K 78643K 149 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 46 2K 3K 78643K 646 0 0 UVM aobj 2 2K 2K 78643K 2 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 NDP 3 0K 0K 78643K 3 0 0 temp 30 2347K 2411K 78643K 1687 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 2 0 0 1 0 1 1 0 8 0 inpcbpl 280 22 0 16 1 0 1 1 0 8 0 plimitpl 152 13 0 8 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtentry 112 23 0 1 1 0 1 1 0 8 0 syncache 264 5 0 5 2 1 1 1 0 8 1 tcpcb 544 8 0 5 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 96 0 0 6 0 6 6 0 8 0 art_table 32 97 0 0 1 0 1 1 0 8 0 art_node 16 22 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1383 0 17 45 0 45 45 0 8 0 ffsino 272 1383 0 17 92 0 92 92 0 8 0 nchpl 144 1555 0 30 57 0 57 57 0 8 0 uvmvnodes 72 1392 0 0 26 0 26 26 0 8 0 vnodes 200 1392 0 0 74 0 74 74 0 8 0 namei 1024 3260 0 3260 3 2 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 2361 0 2361 7 6 1 6 0 8 1 sigapl 432 173 0 163 2 0 2 2 0 8 0 knotepl 112 5 0 0 1 0 1 1 0 8 0 kqueuepl 104 1 0 0 1 0 1 1 0 8 0 pipepl 112 114 0 107 3 2 1 1 0 8 0 fdescpl 488 174 0 163 2 0 2 2 0 8 0 filepl 152 808 0 765 2 0 2 2 0 8 0 lockfpl 104 6 0 6 1 1 0 1 0 8 0 lockfspl 32 3 0 3 1 1 0 1 0 8 0 sessionpl 112 17 0 9 1 0 1 1 0 8 0 pgrppl 48 17 0 9 1 0 1 1 0 8 0 ucredpl 96 47 0 40 1 0 1 1 0 8 0 zombiepl 144 163 0 163 3 2 1 1 0 8 1 processpl 840 188 0 163 4 0 4 4 0 8 0 procpl 600 188 0 163 3 0 3 3 0 8 0 sockpl 384 64 0 48 2 0 2 2 0 8 0 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 72 0 0 8 1 7 8 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 89 0 0 6 0 6 6 0 8 0 bufpl 256 1997 0 254 109 0 109 109 0 8 0 anonpl 16 16728 0 15645 6 1 5 6 0 125 0 amapchunkpl 152 485 0 450 2 0 2 2 0 158 0 amappl16 192 67 0 62 1 0 1 1 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 1 0 1 1 1 0 1 0 8 0 amappl13 168 17 0 14 1 0 1 1 0 8 0 amappl12 160 7 0 7 1 1 0 1 0 8 0 amappl11 152 176 0 167 1 0 1 1 0 8 0 amappl10 144 47 0 47 3 2 1 1 0 8 1 amappl9 136 214 0 213 1 0 1 1 0 8 0 amappl8 128 101 0 95 1 0 1 1 0 8 0 amappl7 120 30 0 26 1 0 1 1 0 8 0 amappl6 112 38 0 34 1 0 1 1 0 8 0 amappl5 104 131 0 119 1 0 1 1 0 8 0 amappl4 96 252 0 233 1 0 1 1 0 8 0 amappl3 88 113 0 108 1 0 1 1 0 8 0 amappl2 80 557 0 520 1 0 1 1 0 8 0 amappl1 72 11882 0 11490 15 5 10 15 0 8 0 amappl 72 363 0 344 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 1 0 0 1 0 1 1 0 8 0 uaddrrnd 24 174 0 163 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 174 0 163 1 0 1 1 0 8 0 vmmpekpl 168 5118 0 5098 1 0 1 1 0 8 0 vmmpepl 168 23426 0 22734 47 13 34 43 0 357 2 vmsppl 360 173 0 163 2 0 2 2 0 8 0 pdppl 4096 355 0 326 5 0 5 5 0 8 0 pvpl 32 69439 0 66733 39 13 26 26 0 265 1 pmappl 224 173 0 163 1 0 1 1 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 237 0 5 7 0 7 7 0 8 0 ddb{0}>