Warning: Permanently added '10.128.0.24' (ED25519) to the list of known hosts. 2025/08/21 07:45:25 ignoring optional flag "type"="gce" 2025/08/21 07:45:25 parsed 1 programs 2025/08/21 07:45:26 executed programs: 0 Data modified on freelist: word -35183671425622 of object 0xffff800001423e00 size 0x194 previous type free (invalid addr 0xe244a11761c7c11b) panic: Data modified on freelist: word 4 of object 0xffff800001423e00 size 0x194 previous type free (0x6563 != 0xdeaf4152) Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *330839 87888 0 0 0x4000000 0 syz-executor.0 db_enter() at db_enter+0x25 panic(ffffffff8330048b) at panic+0x1cf malloc(194,2,a) at malloc+0xcf8 disk_attach(ffff800000b3d000,ffff800000b3d048) at disk_attach+0xc0 vndioctl(2902,c0384600,ffff80002a9891b0,1,ffff80002a81b4d8) at vndioctl+0x1125 VOP_IOCTL(fffffd807dd889a8,c0384600,ffff80002a9891b0,1,fffffd8007bfb548,ffff80002a81b4d8) at VOP_IOCTL+0xa3 vn_ioctl(fffffd806ac85d20,c0384600,ffff80002a9891b0,ffff80002a81b4d8) at vn_ioctl+0xea sys_ioctl(ffff80002a81b4d8,ffff80002a989380,ffff80002a9892d0) at sys_ioctl+0x660 syscall(ffff80002a989380) at syscall+0x962 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6da15185dd0, 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> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic *cpu0: Data modified on freelist: word 4 of object 0xffff800001423e00 size 0x194 previous type free (0x6563 != 0xdeaf4152) ddb> trace db_enter() at db_enter+0x25 panic(ffffffff8330048b) at panic+0x1cf malloc(194,2,a) at malloc+0xcf8 disk_attach(ffff800000b3d000,ffff800000b3d048) at disk_attach+0xc0 vndioctl(2902,c0384600,ffff80002a9891b0,1,ffff80002a81b4d8) at vndioctl+0x1125 VOP_IOCTL(fffffd807dd889a8,c0384600,ffff80002a9891b0,1,fffffd8007bfb548,ffff80002a81b4d8) at VOP_IOCTL+0xa3 vn_ioctl(fffffd806ac85d20,c0384600,ffff80002a9891b0,ffff80002a81b4d8) at vn_ioctl+0xea sys_ioctl(ffff80002a81b4d8,ffff80002a989380,ffff80002a9892d0) at sys_ioctl+0x660 syscall(ffff80002a989380) at syscall+0x962 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6da15185dd0, count: -10 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80002a9887c0 rbx 0xffff800001423e00 rdx 0x3fd rcx 0 rax 0x7c r8 0x101010101010101 r9 0x8080808080808080 r10 0x3f40c4d41950185e r11 0x168df8c663674993 r12 0 r13 0xffffffff838b4b60 kmemstats+0x80 r14 0 r15 0x1 rip 0xffffffff831f0ff5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a9887b0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb> show proc PROC (syz-executor.0) tid=330839 pid=87888 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=52, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a81ad10,0xffff80002a81aa88 process=0xffff80002a8b1698 user=0xffff80002a984000, vmspace=0xfffffd8009427730 estcpu=4, cpticks=3, pctcpu=0.0, user=0, sys=3, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 44354 144700 73656 0 2 0 syz-executor.6 44354 290627 73656 0 2 0x4000000 syz-executor.6 67181 412330 41693 0 2 0 syz-executor.3 67181 445858 41693 0 3 0x4000080 fsleep syz-executor.3 5835 376004 11575 0 2 0 syz-executor.5 5835 61517 11575 0 3 0x4000080 fsleep syz-executor.5 22035 482613 99222 0 2 0 syz-executor.1 22035 15547 99222 0 3 0x4000080 fsleep syz-executor.1 70649 233554 58557 0 2 0 syz-executor.4 70649 476501 58557 0 3 0x4000000 biowait syz-executor.4 87888 515798 58022 0 2 0 syz-executor.0 *87888 330839 58022 0 7 0x4000000 syz-executor.0 56636 104082 63018 0 2 0 syz-executor.2 56636 368019 63018 0 3 0x4000080 fsleep syz-executor.2 73656 38114 63494 0 3 0x82 nanoslp syz-executor.6 10859 239404 63494 0 2 0x2 syz-executor.7 58557 293408 63494 0 3 0x82 nanoslp syz-executor.4 11575 17269 63494 0 3 0x82 nanoslp syz-executor.5 63018 202147 63494 0 3 0x82 nanoslp syz-executor.2 41693 407238 63494 0 3 0x82 nanoslp syz-executor.3 99222 214771 63494 0 3 0x82 nanoslp syz-executor.1 58022 355953 63494 0 3 0x82 nanoslp syz-executor.0 63494 247316 84013 0 3 0x82 wait syz-execprog 63494 37329 84013 0 3 0x4000082 thrsleep syz-execprog 63494 327843 84013 0 3 0x4000082 wait syz-execprog 63494 403568 84013 0 3 0x4000082 wait syz-execprog 63494 519667 84013 0 3 0x4000082 thrsleep syz-execprog 63494 441672 84013 0 3 0x4000082 thrsleep syz-execprog 63494 35024 84013 0 3 0x4000082 wait syz-execprog 63494 188390 84013 0 3 0x4000082 thrsleep syz-execprog 63494 81381 84013 0 3 0x4000082 wait syz-execprog 63494 445806 84013 0 3 0x4000082 wait syz-execprog 63494 279834 84013 0 3 0x4000082 wait syz-execprog 63494 476915 84013 0 3 0x4000082 wait syz-execprog 63494 165182 84013 0 3 0x4000082 kqread syz-execprog 84013 401370 23682 0 3 0x10008a sigsusp ksh 23682 399793 8186 0 3 0x98 kqread sshd-session 8186 429209 45064 0 3 0x92 kqread sshd-session 39280 174643 1 0 3 0x100083 ttyin getty 45064 194367 1 0 3 0x88 kqread sshd 27843 147167 13151 73 3 0x1100090 kqread syslogd 13151 401726 1 0 3 0x100082 sbwait syslogd 1954 53021 1 0 3 0x100080 kqread resolvd 16445 352226 73691 77 3 0x100092 kqread dhcpleased 92791 205258 73691 77 3 0x100092 kqread dhcpleased 73691 162227 1 0 3 0x80 kqread dhcpleased 53012 467713 0 0 3 0x14200 bored smr 95395 41897 0 0 2 0x14200 zerothread 19804 413599 0 0 3 0x14200 aiodoned aiodoned 15401 412575 0 0 3 0x14200 syncer update 38614 419963 0 0 3 0x14200 cleaner cleaner 1592 150381 0 0 3 0x14200 reaper reaper 64567 3193 0 0 3 0x14200 pgdaemon pagedaemon 56844 125282 0 0 3 0x14200 bored viomb 23519 480666 0 0 3 0x40014200 acpi0 acpi0 5332 496613 0 0 3 0x14200 bored softnet7 66273 173691 0 0 3 0x14200 bored softnet6 73369 272684 0 0 3 0x14200 bored softnet5 41544 421265 0 0 3 0x14200 bored softnet4 14992 251562 0 0 3 0x14200 bored softnet3 51900 463546 0 0 3 0x14200 bored softnet2 44650 407525 0 0 3 0x14200 bored softnet1 87452 367300 0 0 3 0x14200 bored softnet0 59518 101667 0 0 3 0x14200 bored systqmp 99893 246145 0 0 3 0x14200 bored systq 68495 229786 0 0 3 0x40014200 tmoslp softclock 53705 35409 0 0 3 0x40014200 idle0 1 223874 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10169 11041K 11053K 166960K 11270 0 pcb 17 12K 12K 166960K 17 0 rtable 205 5K 5K 166960K 277 0 pf 30 12K 12K 166960K 33 0 ifaddr 42 7K 7K 166960K 48 0 ifgroup 50 2K 2K 166960K 55 0 sysctl 1 1K 9K 166960K 5 0 counters 32 17K 17K 166960K 33 0 ioctlops 0 0K 2K 166960K 30 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1262 79K 80K 166960K 1279 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 1K 166960K 2 0 VM map 2 1K 1K 166960K 2 0 sem 2 0K 0K 166960K 2 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 77K 166960K 202 0 proc 57 58K 75K 166960K 500 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 in_multi 99 7K 7K 166960K 110 0 ether_multi 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 25 122K 122K 166960K 25 0 exec 0 0K 1K 166960K 418 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 255 153K 207K 166960K 4491 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 39 78K 104K 166960K 1556 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 13 0K 2K 166960K 30 0 temp 1 8628K 8692K 166960K 4834 0 kqueue 13 20K 20K 166960K 45 0 SYN cache 2 16K 16K 166960K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 39 0 36 1 0 1 1 0 8 0 rtentry 136 104 0 10 4 0 4 4 0 8 0 unpcb 144 67 0 52 1 0 1 1 0 8 0 syncache 336 9 0 9 1 0 1 1 0 8 1 tcpcb 736 11 0 8 1 0 1 1 0 8 0 arp 88 11 0 1 1 0 1 1 0 8 0 inpcb 328 63 0 57 1 0 1 1 0 8 0 nd6 104 18 0 2 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 482 0 46 28 0 28 28 0 8 0 art_table 40 483 0 46 5 0 5 5 0 8 0 art_node 32 104 0 20 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1709 0 181 96 0 96 96 0 8 0 ffsino 256 1709 0 181 96 0 96 96 0 8 0 nchpl 144 2087 0 306 67 0 67 67 0 8 0 uvmvnodes 80 1719 0 0 36 0 36 36 0 8 0 vnodes 216 1719 0 0 96 0 96 96 0 8 0 namei 1024 8013 0 8013 3 0 3 3 0 8 3 kstatmem 264 24 0 2 2 0 2 2 0 8 0 scxspl 216 13222 0 13204 8 0 8 8 1 8 6 plimitpl 152 58 0 42 1 0 1 1 0 8 0 sigapl 424 546 0 497 6 0 6 6 0 8 0 knotepl 120 6981 0 6902 3 0 3 3 0 8 0 kqueuepl 184 41 0 32 1 0 1 1 0 8 0 pipepl 304 175 0 147 3 0 3 3 0 8 0 fdescpl 448 526 0 497 4 0 4 4 0 8 0 filepl 120 2232 0 2089 5 0 5 5 0 8 0 lockfpl 104 6 0 4 1 0 1 1 0 8 0 lockfspl 48 4 0 2 1 0 1 1 0 8 0 sessionpl 144 34 0 18 1 0 1 1 0 8 0 pgrppl 48 34 0 18 1 0 1 1 0 8 0 ucredpl 104 170 0 158 1 0 1 1 0 8 0 zombiepl 144 497 0 497 1 0 1 1 0 8 1 processpl 1152 546 0 497 4 0 4 4 0 8 0 procpl 664 625 0 557 6 0 6 6 0 8 0 sockpl 552 169 0 145 2 0 2 2 0 8 0 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 8836 0 8782 15 0 15 15 0 8 8 mcl2k 2048 232 0 232 1 0 1 1 0 8 1 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 12112 0 11965 10 0 10 10 0 8 0 bufpl 280 8290 0 1991 451 0 451 451 0 8 0 anonpl 24 216128 0 211172 50 0 50 50 0 187 18 amapchunkpl 152 14333 0 13733 26 0 26 26 0 158 2 amappl16 200 4923 0 4787 11 0 11 11 0 8 3 amappl15 192 10 0 10 1 0 1 1 0 8 1 amappl14 184 213 0 202 2 0 2 2 0 8 0 amappl13 176 17 0 17 1 0 1 1 0 8 1 amappl12 168 1206 0 1175 2 0 2 2 0 8 0 amappl11 160 82 0 70 1 0 1 1 0 8 0 amappl10 152 60 0 50 1 0 1 1 0 8 0 amappl9 144 947 0 946 1 0 1 1 0 8 0 amappl8 136 184 0 158 1 0 1 1 0 8 0 amappl7 128 223 0 209 2 0 2 2 0 8 0 amappl6 120 328 0 318 1 0 1 1 0 8 0 amappl5 112 168 0 162 1 0 1 1 0 8 0 amappl4 104 486 0 467 2 0 2 2 0 8 1 amappl3 96 1681 0 1589 3 0 3 3 0 8 0 amappl2 88 1194 0 1119 4 0 4 4 0 8 1 amappl1 80 15877 0 15306 25 6 19 23 0 8 7 amappl 88 3382 0 3215 4 0 4 4 0 92 0 dma4096 4096 1 0 1 1 0 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 0 1 1 0 8 1 dma128 128 253 0 253 1 0 1 1 0 8 1 dma64 64 6 0 6 1 0 1 1 0 8 1 dma32 32 7 0 7 1 0 1 1 0 8 1 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 24 526 0 497 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 526 0 497 1 0 1 1 0 8 0 vmmpekpl 168 11805 0 11774 2 0 2 2 0 8 0 vmmpepl 168 63467 0 61521 120 0 120 120 0 357 35 vmsppl 368 525 0 497 3 0 3 3 0 8 0 rwobjpl 40 26123 0 23399 33 0 33 33 0 8 3 pdppl 4096 1058 0 994 114 42 72 72 0 8 8 pvpl 32 561747 0 551236 364 69 295 364 0 265 210 pmappl 216 525 0 497 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 380 0 42 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x25 panic(ffffffff8330048b) at panic+0x1cf malloc(194,2,a) at malloc+0xcf8 disk_attach(ffff800000b3d000,ffff800000b3d048) at disk_attach+0xc0 vndioctl(2902,c0384600,ffff80002a9891b0,1,ffff80002a81b4d8) at vndioctl+0x1125 VOP_IOCTL(fffffd807dd889a8,c0384600,ffff80002a9891b0,1,fffffd8007bfb548,ffff80002a81b4d8) at VOP_IOCTL+0xa3 vn_ioctl(fffffd806ac85d20,c0384600,ffff80002a9891b0,ffff80002a81b4d8) at vn_ioctl+0xea sys_ioctl(ffff80002a81b4d8,ffff80002a989380,ffff80002a9892d0) at sys_ioctl+0x660 syscall(ffff80002a989380) at syscall+0x962 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6da15185dd0, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x25 panic(ffffffff8330048b) at panic+0x1cf malloc(194,2,a) at malloc+0xcf8 disk_attach(ffff800000b3d000,ffff800000b3d048) at disk_attach+0xc0 vndioctl(2902,c0384600,ffff80002a9891b0,1,ffff80002a81b4d8) at vndioctl+0x1125 VOP_IOCTL(fffffd807dd889a8,c0384600,ffff80002a9891b0,1,fffffd8007bfb548,ffff80002a81b4d8) at VOP_IOCTL+0xa3 vn_ioctl(fffffd806ac85d20,c0384600,ffff80002a9891b0,ffff80002a81b4d8) at vn_ioctl+0xea sys_ioctl(ffff80002a81b4d8,ffff80002a989380,ffff80002a9892d0) at sys_ioctl+0x660 syscall(ffff80002a989380) at syscall+0x962 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6da15185dd0, count: -10