panic: mallocarray: overflow 18446744071562067968 * 8 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 494956 28989 0 0 0 0 syz-executor.0 * 66368 28989 0 0 0x4000000 1K syz-executor.0 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic() at panic+0x174 sys/kern/subr_prf.c:208 itherm_probe(ffffffff80000000,8,2) at itherm_probe 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(fffffd80642f7a68,80085761,ffff800020c258b0,3,fffffd807f7c6900,ffff800020b74018) at VOP_IOCTL+0x9a sys/kern/vfs_vops.c:290 vn_ioctl(fffffd806cb34698,80085761,ffff800020c258b0,ffff800020b74018) at vn_ioctl+0xc9 sys/kern/vfs_vnops.c:512 sys_ioctl(ffff800020b74018,ffff800020c259f8,ffff800020c259e0) at sys_ioctl+0x651 syscall(ffff800020c25a90) at syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(ffff800020c25a90) at syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,0,ffffffffffffff85,0,3,4e1ece0f010) at Xsyscall+0x128 end of kernel end trace frame: 0x4e4386b75d0, 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 itherm_probe(ffffffff80000000,8,2) at itherm_probe 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(fffffd80642f7a68,80085761,ffff800020c258b0,3,fffffd807f7c6900,ffff800020b74018) at VOP_IOCTL+0x9a sys/kern/vfs_vops.c:290 vn_ioctl(fffffd806cb34698,80085761,ffff800020c258b0,ffff800020b74018) at vn_ioctl+0xc9 sys/kern/vfs_vnops.c:512 sys_ioctl(ffff800020b74018,ffff800020c259f8,ffff800020c259e0) at sys_ioctl+0x651 syscall(ffff800020c25a90) at syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(ffff800020c25a90) at syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,0,ffffffffffffff85,0,3,4e1ece0f010) at Xsyscall+0x128 end of kernel end trace frame: 0x4e4386b75d0, count: -10 ddb{1}> show registers rdi 0xffffffff815744d7 db_enter+0x17 rsi 0x15e9 __ALIGN_SIZE+0x5e9 rbp 0xffff800020c254f0 rbx 0xffff800020c255a0 rdx 0x15ea __ALIGN_SIZE+0x5ea rcx 0xffff800000966000 rax 0xffff800000966000 r8 0xffffffff8161baa3 kprintf+0x183 r9 0x1 r10 0x25 r11 0xa6fc58d48a4c8193 r12 0x3000000008 r13 0xffff800020c25500 r14 0x100 r15 0x1 rip 0xffffffff815744d8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020c254e0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.0) pid=66368 stat=onproc flags process=0 proc=4000000 pri=65, usrpri=65, nice=20 forw=0xffffffffffffffff, list=0xffff800020b74978,0xffffffff82382238 process=0xffff800020b8c360 user=0xffff800020c20000, vmspace=0xfffffd807effeca8 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 28989 494956 52368 0 7 0 syz-executor.0 *28989 66368 52368 0 7 0x4000000 syz-executor.0 54486 495588 43153 0 3 0x2 biowait syz-executor.1 95289 412702 0 0 3 0x14200 bored sosplice 52368 507165 43153 0 3 0x82 nanosleep syz-executor.0 43153 370521 83132 0 3 0x82 thrsleep syz-fuzzer 43153 129059 83132 0 3 0x4000082 nanosleep syz-fuzzer 43153 281604 83132 0 3 0x4000082 thrsleep syz-fuzzer 43153 374481 83132 0 3 0x4000082 thrsleep syz-fuzzer 43153 121847 83132 0 3 0x4000082 nanosleep syz-fuzzer 43153 11522 83132 0 3 0x4000082 thrsleep syz-fuzzer 43153 265246 83132 0 3 0x4000082 thrsleep syz-fuzzer 43153 228646 83132 0 3 0x4000082 kqread syz-fuzzer 43153 390368 83132 0 3 0x4000082 thrsleep syz-fuzzer 43153 192891 83132 0 3 0x4000082 thrsleep syz-fuzzer 83132 159897 12236 0 3 0x10008a pause ksh 12236 321023 21184 0 3 0x92 select sshd 14378 484992 1 0 3 0x100083 ttyin getty 21184 230977 1 0 3 0x80 select sshd 5646 229426 3279 74 3 0x100092 bpf pflogd 3279 274410 1 0 3 0x80 netio pflogd 91904 485143 76862 73 3 0x100090 kqread syslogd 76862 329504 1 0 3 0x100082 netio syslogd 32693 139744 1 77 3 0x100090 poll dhclient 86466 477006 1 0 3 0x80 poll dhclient 59434 88258 0 0 3 0x14200 pgzero zerothread 82947 291519 0 0 3 0x14200 aiodoned aiodoned 94911 240303 0 0 3 0x14200 syncer update 1066 483880 0 0 3 0x14200 cleaner cleaner 35313 239506 0 0 3 0x14200 reaper reaper 12866 166907 0 0 3 0x14200 pgdaemon pagedaemon 20041 503110 0 0 3 0x14200 bored crynlk 54000 481879 0 0 3 0x14200 bored crypto 32493 88790 0 0 3 0x40014200 acpi0 acpi0 75683 419412 0 0 3 0x40014200 idle1 7739 442284 0 0 3 0x14200 bored softnet 49458 261797 0 0 3 0x14200 bored systqmp 90831 40500 0 0 3 0x14200 bored systq 91928 217457 0 0 3 0x40014200 bored softclock 68384 149408 0 0 3 0x40014200 idle0 61021 286591 0 0 3 0x14200 bored smr 1 476735 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 28989 (syz-executor.0) thread 0xffff800020b74018 (66368) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff823959b0) 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 54486 (syz-executor.1) thread 0xffff800020b75c38 (495588) exclusive rrwlock inode r = 0 (0xfffffd807ac22d58) locked @ /syzkaller/managers/multicore/kernel/sys/ufs/ufs/ufs_ihash.c:140 #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 ufs_ihashins+0x6d sys/ufs/ufs/ufs_ihash.c:140 #4 ffs_vget+0x143 sys/ufs/ffs/ffs_vfsops.c:1352 #5 ffs_inode_alloc+0x1cf sys/ufs/ffs/ffs_alloc.c:392 #6 ufs_mkdir+0x10f sys/ufs/ufs/ufs_vnops.c:1164 #7 VOP_MKDIR+0x76 sys/kern/vfs_vops.c:449 #8 domkdirat+0x12d sys/kern/vfs_syscalls.c:2881 #9 syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] #9 syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 #10 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806e307f80) 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 domkdirat+0x81 sys/kern/vfs_syscalls.c:2866 #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 9520 6421K 6429K 78643K 10787 0 0 pcb 25 9K 10K 78643K 373 0 0 rtable 100 3K 4K 78643K 301 0 0 ifaddr 58 13K 13K 78643K 96 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1488 0 0 iov 0 0K 12K 78643K 71 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1199 75K 76K 78643K 1485 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 18 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 12 0K 0K 78643K 61 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12628 0 0 file desc 5 13K 21K 78643K 501 0 0 sigio 0 0K 0K 78643K 8 0 0 proc 54 51K 71K 78643K 387 0 0 subproc 64 65538K 67586K 78643K 102 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 53 0 0 in_multi 33 2K 2K 78643K 57 0 0 ether_multi 1 0K 0K 78643K 3 0 0 mrt 0 0K 0K 78643K 14 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 72 318K 318K 78643K 72 0 0 exec 0 0K 1K 78643K 222 0 0 pfkey data 0 0K 0K 78643K 2 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 85 20K 22K 78643K 2477 0 0 UVM aobj 39 3K 3K 78643K 40 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 12 0K 0K 78643K 27 0 0 temp 167 2374K 3011K 78643K 4545 0 0 kqueue 0 0K 0K 78643K 4 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 5 0 1 1 0 1 1 0 8 0 inpcbpl 280 348 0 341 1 0 1 1 0 8 0 plimitpl 152 39 0 31 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtentry 112 54 0 14 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpcb 544 121 0 117 1 0 1 1 0 8 0 rttmr 72 4 0 4 3 3 0 1 0 8 0 nd6 48 6 0 2 1 0 1 1 0 8 0 ppxss 1128 5 0 5 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 20 0 9 1 0 1 1 0 8 0 pfstkey 112 20 0 9 1 0 1 1 0 8 0 pfstate 328 20 0 9 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 256 286 0 101 16 1 15 16 0 8 3 art_table 32 287 0 101 2 0 2 2 0 8 0 art_node 16 53 0 19 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 2 1 0 1 1 0 8 0 semapl 112 59 0 49 1 0 1 1 0 8 0 shmpl 112 38 0 1 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2326 0 914 46 0 46 46 0 8 0 ffsino 272 2326 0 914 95 0 95 95 0 8 0 nchpl 144 3239 0 1605 61 0 61 61 0 8 0 uvmvnodes 72 2449 0 0 45 0 45 45 0 8 0 vnodes 200 2449 0 0 129 0 129 129 0 8 0 namei 1024 9218 0 9217 2 1 1 1 0 8 0 percpumem 16 30 0 0 1 0 1 1 0 8 0 scsiplug 64 2 0 2 2 2 0 1 0 8 0 scxspl 192 8679 0 8678 10 9 1 6 0 8 0 sigapl 432 697 0 682 2 0 2 2 0 8 0 futexpl 56 5967 0 5967 1 0 1 1 0 8 1 knotepl 112 171 0 152 1 0 1 1 0 8 0 kqueuepl 104 129 0 127 1 0 1 1 0 8 0 pipepl 112 430 0 411 2 1 1 1 0 8 0 fdescpl 488 698 0 682 3 0 3 3 0 8 0 filepl 152 4151 0 4051 5 0 5 5 0 8 1 lockfpl 104 160 0 160 2 1 1 1 0 8 1 lockfspl 32 178 0 178 2 1 1 1 0 8 1 sessionpl 112 19 0 8 1 0 1 1 0 8 0 pgrppl 48 24 0 13 1 0 1 1 0 8 0 ucredpl 96 777 0 768 1 0 1 1 0 8 0 zombiepl 144 682 0 682 2 1 1 1 0 8 1 processpl 840 714 0 682 4 0 4 4 0 8 0 procpl 600 1793 0 1751 4 0 4 4 0 8 0 srpgc 64 10 0 10 4 4 0 1 0 8 0 sosppl 128 14 0 14 3 3 0 1 0 8 0 sockpl 384 635 0 616 3 0 3 3 0 8 1 mcl64k 65536 229 0 0 29 0 29 29 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 5 0 0 1 0 1 1 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 10 0 0 2 0 2 2 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 125 0 0 15 0 15 15 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 347 0 0 19 0 19 19 0 8 0 bufpl 256 6714 0 1145 349 0 349 349 0 8 0 anonpl 16 73831 0 65036 61 18 43 47 0 125 6 amapchunkpl 152 3924 0 3827 20 11 9 12 0 158 5 amappl16 192 3094 0 2636 42 13 29 35 0 8 6 amappl15 184 57 0 53 1 0 1 1 0 8 0 amappl14 176 163 0 158 2 1 1 1 0 8 0 amappl13 168 26 0 23 1 0 1 1 0 8 0 amappl12 160 12 0 11 1 0 1 1 0 8 0 amappl11 152 21 0 6 1 0 1 1 0 8 0 amappl10 144 315 0 309 1 0 1 1 0 8 0 amappl9 136 581 0 578 1 0 1 1 0 8 0 amappl8 128 138 0 123 1 0 1 1 0 8 0 amappl7 120 32 0 28 1 0 1 1 0 8 0 amappl6 112 62 0 53 1 0 1 1 0 8 0 amappl5 104 127 0 112 1 0 1 1 0 8 0 amappl4 96 933 0 902 2 1 1 2 0 8 0 amappl3 88 268 0 260 1 0 1 1 0 8 0 amappl2 80 4970 0 4911 2 0 2 2 0 8 0 amappl1 72 24695 0 24252 25 15 10 20 0 8 0 amappl 72 2036 0 1999 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 39 0 1 1 0 1 1 0 8 0 uaddrrnd 24 698 0 682 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 698 0 682 1 0 1 1 0 8 0 vmmpekpl 168 9582 0 9563 3 1 2 2 0 8 0 vmmpepl 168 79976 0 78509 107 34 73 81 0 357 4 vmsppl 360 697 0 682 2 0 2 2 0 8 0 pdppl 4096 1404 0 1364 6 0 6 6 0 8 0 pvpl 32 236979 0 224938 146 28 118 121 0 265 16 pmappl 224 697 0 682 2 1 1 2 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 544 0 5 16 0 16 16 0 8 0