QTWdmx]PϪ`ߨj 7[X̀]ae^c 3챗+MjR"vƻK0tJGk'N@iqzfT:m#!W`˅gBd캾SYS\)&I!6"xI0LA_oc5Ϝ*=ځEj {N1iu~S[q'V;G5aqy0C\/%5ڱsltH yE?1F.PqyA!ɈL~(4Nr-/d?TleL c?:1"1S@l]M1`U.j I*Ex'UG[:wH\ d?ю0%ɾ@F,cvx0_"1#HDG?\S=jeu*뷂0Lruel7'vso"FQ&a3@!;KĩUaC|ԏSUBEOkTKZ}SBpanic: Data modified on freelist: word 4 of object 0xffff800000cf9e00 size 0x120 previous type counters (0x6563 != 0xdeafbead) Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *309913 91515 0 0 0x4000000 0 syz-executor.2 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff82544063) at panic+0x161 sys/kern/subr_prf.c:202 malloc(120,2,a) at malloc+0xa85 sys/kern/kern_malloc.c:364 bpfopen(2d1700,1,2000,ffff8000215fca88) at bpfopen+0xb0 sys/net/bpf.c:386 spec_open_clone(ffff8000240d38e8) at spec_open_clone+0x204 spec_open(ffff8000240d38e8) at spec_open+0x3f5 sys/kern/spec_vnops.c:155 VOP_OPEN(fffffd807eab1ab0,1,fffffd807f7d8840,ffff8000215fca88) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff8000240d3b38,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff8000215fca88,ffffff9c,200001c0,0,0,ffff8000240d3d20) at doopenat+0x26a sys/kern/vfs_syscalls.c:1129 syscall(ffff8000240d3d90) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc20fb42df70, count: 4 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 0xffff800000cf9e00 size 0x120 previous type counters (0x6563 != 0xdeafbead) ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff82544063) at panic+0x161 sys/kern/subr_prf.c:202 malloc(120,2,a) at malloc+0xa85 sys/kern/kern_malloc.c:364 bpfopen(2d1700,1,2000,ffff8000215fca88) at bpfopen+0xb0 sys/net/bpf.c:386 spec_open_clone(ffff8000240d38e8) at spec_open_clone+0x204 spec_open(ffff8000240d38e8) at spec_open+0x3f5 sys/kern/spec_vnops.c:155 VOP_OPEN(fffffd807eab1ab0,1,fffffd807f7d8840,ffff8000215fca88) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff8000240d3b38,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff8000215fca88,ffffff9c,200001c0,0,0,ffff8000240d3d20) at doopenat+0x26a sys/kern/vfs_syscalls.c:1129 syscall(ffff8000240d3d90) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc20fb42df70, count: -11 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff8000240d3600 rbx 0xffff800000cf9e00 rdx 0 rcx 0 rax 0xffff8000215fca88 r8 0x101010101010101 r9 0x8080808080808080 r10 0x6c610143560b1a29 r11 0x262e1542ee332f24 r12 0 r13 0x51 r14 0 r15 0x1 rip 0xffffffff81d67f88 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff8000240d35f0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (syz-executor.2) pid=309913 stat=onproc flags process=0 proc=4000000 pri=84, usrpri=84, nice=20 forw=0xffffffffffffffff, list=0xffff8000215eefc0,0xffff8000215fcfd8 process=0xffff800021692408 user=0xffff8000240ce000, vmspace=0xfffffd80622dddd8 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 91515 221867 93953 0 2 0 syz-executor.2 *91515 309913 93953 0 7 0x4000000 syz-executor.2 91515 269226 93953 0 2 0x4000000 syz-executor.2 22268 276889 4471 0 2 0 syz-executor.3 22268 361432 4471 0 3 0x4000080 fsleep syz-executor.3 30053 454678 71415 0 2 0 syz-executor.6 30053 58200 71415 0 3 0x4000080 fsleep syz-executor.6 2667 2225 74619 0 3 0x80 nanoslp syz-executor.0 2667 118559 74619 0 3 0x4000080 fsleep syz-executor.0 2667 165392 74619 0 2 0x4000000 syz-executor.0 2667 23663 74619 0 2 0x4000000 syz-executor.0 79705 504574 51755 0 3 0x82 nanoslp syz-executor.5 93953 396460 51755 0 3 0x82 nanoslp syz-executor.2 71415 97608 51755 0 3 0x82 nanoslp syz-executor.6 4471 511873 51755 0 3 0x82 nanoslp syz-executor.3 51779 249396 51755 0 3 0x82 nanoslp syz-executor.1 74157 475518 51755 0 3 0x82 nanoslp syz-executor.7 85081 357721 51755 0 3 0x2 biowait syz-executor.4 5431 45255 0 0 3 0x14200 bored sosplice 16233 44438 0 0 3 0x14280 nfsidl nfsio 31386 203884 0 0 3 0x14280 nfsidl nfsio 43730 521801 0 0 3 0x14280 nfsidl nfsio 62249 378457 0 0 3 0x14280 nfsidl nfsio 29222 240673 0 0 3 0x14280 nfsidl nfsio 8239 371553 0 0 3 0x14280 nfsidl nfsio 76310 67080 0 0 3 0x14280 nfsidl nfsio 62931 251219 0 0 3 0x14280 nfsidl nfsio 44838 281601 0 0 3 0x14280 nfsidl nfsio 10961 423816 0 0 3 0x14280 nfsidl nfsio 95982 70332 0 0 3 0x14280 nfsidl nfsio 63264 260783 0 0 3 0x14280 nfsidl nfsio 20124 438063 0 0 3 0x14280 nfsidl nfsio 60811 211312 0 0 3 0x14280 nfsidl nfsio 13553 361883 0 0 3 0x14280 nfsidl nfsio 67790 144062 0 0 3 0x14280 nfsidl nfsio 28892 250086 0 0 3 0x14280 nfsidl nfsio 57410 347653 0 0 3 0x14280 nfsidl nfsio 6848 342080 0 0 3 0x14280 nfsidl nfsio 77846 64233 0 0 3 0x14280 nfsidl nfsio 74619 451998 51755 0 3 0x82 nanoslp syz-executor.0 51755 267388 15568 0 3 0x82 kqread syz-fuzzer 51755 234783 15568 0 3 0x4000082 nanoslp syz-fuzzer 51755 373041 15568 0 3 0x4000082 thrsleep syz-fuzzer 51755 491803 15568 0 3 0x4000082 thrsleep syz-fuzzer 51755 178644 15568 0 3 0x4000082 thrsleep syz-fuzzer 51755 75872 15568 0 3 0x4000082 thrsleep syz-fuzzer 51755 240247 15568 0 3 0x4000082 thrsleep syz-fuzzer 51755 215485 15568 0 3 0x4000082 thrsleep syz-fuzzer 15568 348014 66647 0 3 0x10008a sigsusp ksh 66647 457698 71923 0 3 0x9a kqread sshd 82102 244208 1 0 3 0x100083 ttyin getty 71923 160870 1 0 3 0x88 kqread sshd 62576 272224 16227 73 3 0x1100090 kqread syslogd 16227 274393 1 0 3 0x100082 netio syslogd 5800 301037 1 0 3 0x100080 kqread resolvd 67895 379692 15944 77 3 0x100092 kqread dhcpleased 11772 53449 15944 77 3 0x100092 kqread dhcpleased 15944 356292 1 0 3 0x80 kqread dhcpleased 26098 466544 0 0 3 0x14200 bored smr 36146 272561 0 0 2 0x14200 zerothread 61041 11613 0 0 3 0x14200 aiodoned aiodoned 74226 131933 0 0 3 0x14200 syncer update 32651 396246 0 0 3 0x14200 cleaner cleaner 73874 504293 0 0 3 0x14200 reaper reaper 55604 432899 0 0 3 0x14200 pgdaemon pagedaemon 37304 93267 0 0 3 0x14200 bored viomb 21714 32938 0 0 3 0x40014200 acpi0 acpi0 3673 269521 0 0 3 0x14200 bored softnet 53714 506117 0 0 3 0x14200 bored systqmp 3757 167328 0 0 3 0x14200 bored systq 46630 364267 0 0 3 0x40014200 bored softclock 384 464612 0 0 3 0x40014200 idle0 1 240713 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 10307 6653K 7064K 78643K 19259 0 pcb 18 18K 20K 78643K 1035 0 rtable 243 10K 12K 78643K 2338 0 ifaddr 91 20K 21K 78643K 836 0 sysctl 2 0K 0K 78643K 4 0 counters 28 17K 17K 78643K 131 0 ioctlops 0 0K 4K 78643K 1584 0 iov 0 0K 32K 78643K 4788 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1428 89K 89K 78643K 4833 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 34 0 VM map 2 0K 0K 78643K 2 0 sem 21 3K 5K 78643K 509 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 14 49K 81K 78643K 6855 0 sigio 0 0K 0K 78643K 85 0 proc 59 55K 71K 78643K 2035 0 subproc 104 6K 6K 78643K 715 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 176 0 in_multi 99 6K 6K 78643K 834 0 ether_multi 1 0K 0K 78643K 83 0 mrt 0 0K 0K 78643K 16 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 187 837K 837K 78643K 187 0 exec 0 0K 2K 78643K 2399 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 359 285K 288K 78643K 82588 0 UVM aobj 71 4K 4K 78643K 71 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 2 0K 0K 78643K 435 0 NDP 12 0K 1K 78643K 235 0 temp 149 4733K 4809K 78643K 60836 0 kqueue 12 18K 30K 78643K 459 0 SYN cache 2 12K 20K 78643K 3 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 581 0 578 11 10 1 3 0 8 0 rtentry 112 696 0 591 4 0 4 4 0 8 0 unpcb 136 4363 0 4350 39 38 1 8 0 8 0 syncache 296 20 0 20 7 7 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 91 8 91 2 2 0 1 0 8 0 tcpcb 736 1797 0 1781 68 66 2 10 0 8 0 arp 88 114 0 95 1 0 1 1 0 8 0 ipq 40 11 0 11 2 2 0 1 0 8 0 ipqe 40 180 0 180 2 2 0 1 0 8 0 inpcb 304 4924 0 4905 93 87 6 14 0 8 4 rttmr 72 5 0 5 2 2 0 1 0 8 0 ip6q 72 5 0 5 3 2 1 1 0 8 1 ip6af 40 9 0 9 3 2 1 1 0 8 1 nd6 48 188 0 161 1 0 1 1 0 8 0 pkpcb 40 19 0 19 5 5 0 1 0 8 0 kcovpl 48 55 0 47 1 0 1 1 0 8 0 ppxss 1152 27 0 27 5 5 0 1 0 8 0 pfstscr 40 5 0 5 1 1 0 1 0 8 0 pfrktable 1344 104 0 98 4 3 1 1 0 8 0 pftag 88 6 0 2 1 0 1 1 0 8 0 pfstkey 112 18 0 18 2 2 0 1 0 8 0 pfstate 320 9 0 9 2 2 0 1 0 8 0 pfrule 1360 227 0 210 5 3 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 2922 0 2515 44 18 26 30 0 8 0 art_table 32 2923 0 2515 4 0 4 4 0 8 0 art_node 16 691 0 599 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 3 1 0 1 1 0 8 0 semapl 112 501 0 482 1 0 1 1 0 8 0 shmpl 112 68 0 0 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 10855 0 9406 91 0 91 91 0 8 0 ffsino 240 10855 0 9406 86 0 86 86 0 8 0 nchpl 144 21159 0 19536 62 0 62 62 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 78956 0 78955 5 4 1 2 0 8 0 vcpupl 1984 13 0 0 2 0 2 2 0 8 0 vmpool 528 26 0 13 2 1 1 1 0 8 0 pfiaddrpl 120 40 0 29 3 2 1 1 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 216 75107 0 75106 24 22 2 8 0 8 1 plimitpl 152 799 0 785 1 0 1 1 0 8 0 sigapl 424 7067 0 7005 8 0 8 8 0 8 0 futexpl 64 60436 0 60433 6 5 1 1 0 8 0 knotepl 120 62604 0 62524 13 10 3 6 0 8 0 kqueuepl 184 1941 0 1933 35 31 4 6 0 8 3 pipepl 304 1201 0 1172 31 28 3 8 0 8 0 fdescpl 432 7032 0 7007 5 1 4 4 0 8 0 filepl 120 51757 0 51466 81 71 10 17 0 8 1 lockfpl 104 3135 0 3133 7 5 2 2 0 8 1 lockfspl 48 746 0 744 1 0 1 1 0 8 0 sessionpl 144 70 0 54 1 0 1 1 0 8 0 pgrppl 48 73 0 57 1 0 1 1 0 8 0 ucredpl 96 3770 0 3758 1 0 1 1 0 8 0 zombiepl 144 7008 0 7005 1 0 1 1 0 8 0 processpl 1000 7067 0 7005 9 0 9 9 0 8 0 procpl 672 17713 0 17637 22 14 8 9 0 8 1 sosppl 168 17 0 17 5 5 0 1 0 8 0 sockpl 448 9899 0 9867 196 185 11 26 0 8 7 mcl64k 65536 628 0 628 12 11 1 1 0 8 1 mcl16k 16384 187 0 187 15 14 1 1 0 8 1 mcl12k 12288 296 0 296 14 13 1 1 0 8 1 mcl9k 9216 101 0 101 19 18 1 1 0 8 1 mcl8k 8192 257 0 257 12 11 1 1 0 8 1 mcl4k 4096 555 0 555 9 8 1 1 0 8 1 mcl2k2 2112 47 0 47 15 14 1 1 0 8 1 mcl2k 2048 91584 0 91528 16 6 10 12 0 8 1 mtagpl 96 1201 0 974 13 7 6 7 0 8 0 mbufpl 256 193356 0 192935 82 52 30 40 0 8 0 bufpl 288 19281 0 12872 458 0 458 458 0 8 0 anonpl 24 1952041 0 1933614 203 68 135 154 0 188 7 amapchunkpl 152 200191 0 199456 88 53 35 44 0 158 1 amappl16 200 19311 0 18588 104 63 41 50 0 8 1 amappl15 192 949 0 944 1 0 1 1 0 8 0 amappl14 184 256 0 252 1 0 1 1 0 8 0 amappl13 176 1135 0 1128 1 0 1 1 0 8 0 amappl12 168 414 0 411 1 0 1 1 0 8 0 amappl11 160 974 0 961 1 0 1 1 0 8 0 amappl10 152 1796 0 1788 1 0 1 1 0 8 0 amappl9 144 1822 0 1818 1 0 1 1 0 8 0 amappl8 136 1805 0 1728 3 0 3 3 0 8 0 amappl7 128 605 0 596 1 0 1 1 0 8 0 amappl6 120 1706 0 1682 2 1 1 2 0 8 0 amappl5 112 7402 0 7389 1 0 1 1 0 8 0 amappl4 104 3306 0 3278 2 1 1 2 0 8 0 amappl3 96 1690 0 1673 1 0 1 1 0 8 0 amappl2 88 2151 0 2103 3 1 2 3 0 8 0 amappl1 80 125767 0 125249 18 5 13 18 0 8 0 amappl 88 81299 0 81063 7 0 7 7 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 70 0 0 2 0 2 2 0 8 0 uaddrrnd 24 7058 0 7020 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 7058 0 7020 1 0 1 1 0 8 0 vmmpekpl 168 54643 0 54593 3 0 3 3 0 8 0 vmmpepl 168 661437 0 658964 268 134 134 146 0 357 8 vmsppl 272 7057 0 7020 5 2 3 3 0 8 0 rwobjpl 24 156930 0 149278 49 2 47 48 0 8 0 pdppl 4096 14122 0 14053 527 450 77 77 0 8 8 pvpl 32 3587298 0 3564514 390 140 250 266 0 265 45 pmappl 216 7057 0 7020 3 0 3 3 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1638 0 832 24 0 24 24 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff82544063) at panic+0x161 sys/kern/subr_prf.c:202 malloc(120,2,a) at malloc+0xa85 sys/kern/kern_malloc.c:364 bpfopen(2d1700,1,2000,ffff8000215fca88) at bpfopen+0xb0 sys/net/bpf.c:386 spec_open_clone(ffff8000240d38e8) at spec_open_clone+0x204 spec_open(ffff8000240d38e8) at spec_open+0x3f5 sys/kern/spec_vnops.c:155 VOP_OPEN(fffffd807eab1ab0,1,fffffd807f7d8840,ffff8000215fca88) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff8000240d3b38,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff8000215fca88,ffffff9c,200001c0,0,0,ffff8000240d3d20) at doopenat+0x26a sys/kern/vfs_syscalls.c:1129 syscall(ffff8000240d3d90) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc20fb42df70, count: -11 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff82544063) at panic+0x161 sys/kern/subr_prf.c:202 malloc(120,2,a) at malloc+0xa85 sys/kern/kern_malloc.c:364 bpfopen(2d1700,1,2000,ffff8000215fca88) at bpfopen+0xb0 sys/net/bpf.c:386 spec_open_clone(ffff8000240d38e8) at spec_open_clone+0x204 spec_open(ffff8000240d38e8) at spec_open+0x3f5 sys/kern/spec_vnops.c:155 VOP_OPEN(fffffd807eab1ab0,1,fffffd807f7d8840,ffff8000215fca88) at VOP_OPEN+0x6c sys/kern/vfs_vops.c:138 vn_open(ffff8000240d3b38,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:183 doopenat(ffff8000215fca88,ffffff9c,200001c0,0,0,ffff8000240d3d20) at doopenat+0x26a sys/kern/vfs_syscalls.c:1129 syscall(ffff8000240d3d90) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc20fb42df70, count: -11