login: panic: pool_do_get: vnodes free list modified: page 0xfffffd805fa07000; item addr 0xfffffd805fa07000; offset 0x0=0x0 != 0xd1acf8a029b8068e Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *122197 8351 0 0x2 0 0 syz-executor.0 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8224330e) at panic+0x15c sys/kern/subr_prf.c:207 pool_do_get(ffffffff825b67b8,9,ffff80001d427878) at pool_do_get+0x42a sys/kern/subr_pool.c:738 pool_get(ffffffff825b67b8,9) at pool_get+0xb5 sys/kern/subr_pool.c:581 getnewvnode(1,ffff8000006b0800,ffffffff8243bed8,ffff80001d427978) at getnewvnode+0x101 sys/kern/vfs_subr.c:408 ffs_vget(ffff8000006b0800,11b9b,ffff80001d427bc8) at ffs_vget+0xa2 sys/ufs/ffs/ffs_vfsops.c:1333 ffs_inode_alloc(fffffd80571caf08,41ed,fffffd806c3bfba0,ffff80001d427bc8) at ffs_inode_alloc+0x1cf sys/ufs/ffs/ffs_alloc.c:392 ufs_mkdir(ffff80001d427c20) at ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162 VOP_MKDIR(fffffd805709f4e0,ffff80001d427d80,ffff80001d427dd0,ffff80001d427cb0) at VOP_MKDIR+0xc6 sys/kern/vfs_vops.c:449 domkdirat(ffff80001d33a388,ffffff9c,7f7ffffe6da0,1ff) at domkdirat+0x121 sys/kern/vfs_syscalls.c:3058 syscall(ffff80001d427f50) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe6e10, count: 3 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 pool_do_get: vnodes free list modified: page 0xfffffd805fa07000; item addr 0xfffffd805fa07000; offset 0x0=0x0 != 0xd1acf8a029b8068e ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8224330e) at panic+0x15c sys/kern/subr_prf.c:207 pool_do_get(ffffffff825b67b8,9,ffff80001d427878) at pool_do_get+0x42a sys/kern/subr_pool.c:738 pool_get(ffffffff825b67b8,9) at pool_get+0xb5 sys/kern/subr_pool.c:581 getnewvnode(1,ffff8000006b0800,ffffffff8243bed8,ffff80001d427978) at getnewvnode+0x101 sys/kern/vfs_subr.c:408 ffs_vget(ffff8000006b0800,11b9b,ffff80001d427bc8) at ffs_vget+0xa2 sys/ufs/ffs/ffs_vfsops.c:1333 ffs_inode_alloc(fffffd80571caf08,41ed,fffffd806c3bfba0,ffff80001d427bc8) at ffs_inode_alloc+0x1cf sys/ufs/ffs/ffs_alloc.c:392 ufs_mkdir(ffff80001d427c20) at ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162 VOP_MKDIR(fffffd805709f4e0,ffff80001d427d80,ffff80001d427dd0,ffff80001d427cb0) at VOP_MKDIR+0xc6 sys/kern/vfs_vops.c:449 domkdirat(ffff80001d33a388,ffffff9c,7f7ffffe6da0,1ff) at domkdirat+0x121 sys/kern/vfs_syscalls.c:3058 syscall(ffff80001d427f50) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe6e10, count: -12 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d4276e0 rbx 0xffff80001d427790 rdx 0x2 rcx 0 rax 0 r8 0xffff80001d4276a0 r9 0x1 r10 0 r11 0x8ff7ebf47db80c16 r12 0x3000000008 r13 0xffff80001d4276f0 r14 0x100 r15 0x1 rip 0xffffffff81284e38 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d4276d0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (syz-executor.0) pid=122197 stat=onproc flags process=2 proc=0 pri=17, usrpri=65, nice=20 forw=0xffffffffffffffff, list=0xffff80001d33a118,0xffff80001d339288 process=0xffff8000ffffb5a0 user=0xffff80001d423000, vmspace=0xfffffd806bc0a880 estcpu=36, cpticks=1, pctcpu=0.1 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 31888 30130 60861 0 2 0 syz-executor.1 31888 437514 60861 0 3 0x4000080 select syz-executor.1 * 8351 122197 7718 0 7 0x2 syz-executor.0 60861 467079 7718 0 3 0x82 nanosleep syz-executor.1 7718 379513 94395 0 3 0x82 thrsleep syz-fuzzer 7718 418890 94395 0 3 0x4000082 nanosleep syz-fuzzer 7718 236402 94395 0 3 0x4000082 thrsleep syz-fuzzer 7718 439210 94395 0 3 0x4000082 thrsleep syz-fuzzer 7718 125634 94395 0 3 0x4000082 kqread syz-fuzzer 7718 11995 94395 0 3 0x4000082 thrsleep syz-fuzzer 7718 369472 94395 0 3 0x4000082 thrsleep syz-fuzzer 94395 429080 49338 0 3 0x10008a pause ksh 49338 165716 59658 0 3 0x92 select sshd 76392 212490 1 0 3 0x100083 ttyin getty 59658 276165 1 0 3 0x80 select sshd 67876 78772 55203 73 3 0x100090 kqread syslogd 55203 251237 1 0 3 0x100082 netio syslogd 67543 216256 1 77 3 0x100090 poll dhclient 24565 114570 1 0 3 0x80 poll dhclient 35616 302566 0 0 3 0x14200 bored smr 89629 65156 0 0 2 0x14200 zerothread 67810 133810 0 0 3 0x14200 aiodoned aiodoned 43778 113081 0 0 3 0x14200 syncer update 23066 13731 0 0 3 0x14200 cleaner cleaner 21580 407950 0 0 3 0x14200 reaper reaper 75629 259255 0 0 3 0x14200 pgdaemon pagedaemon 58135 262623 0 0 3 0x14200 bored crynlk 7142 443257 0 0 3 0x14200 bored crypto 34194 424346 0 0 3 0x40014200 acpi0 acpi0 50287 302074 0 0 3 0x14200 bored softnet 15394 103814 0 0 3 0x14200 bored systqmp 41437 78464 0 0 3 0x14200 bored systq 17050 521367 0 0 3 0x40014200 bored softclock 52909 71097 0 0 3 0x40014200 idle0 1 170052 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 9460 6328K 6582K 78643K 10614 0 pcb 13 8K 8K 78643K 17 0 rtable 105 3K 3K 78643K 191 0 ifaddr 44 10K 10K 78643K 50 0 counters 21 16K 16K 78643K 21 0 ioctlops 0 0K 2K 78643K 15 0 iov 0 0K 12K 78643K 8 0 mount 1 1K 1K 78643K 1 0 vnodes 1216 76K 77K 78643K 1250 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 5 0 VM map 2 0K 0K 78643K 2 0 sem 6 0K 0K 78643K 6 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1794 195K 288K 78643K 12646 0 file desc 5 13K 25K 78643K 66 0 sigio 0 0K 0K 78643K 2 0 proc 48 38K 54K 78643K 359 0 subproc 32 2K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 33 2K 2K 78643K 33 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 43 201K 201K 78643K 43 0 exec 0 0K 1K 78643K 181 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 86 20K 36K 78643K 983 0 UVM aobj 6 2K 2K 78643K 8 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 2 0 NDP 6 0K 0K 78643K 10 0 temp 66 3027K 3091K 78643K 8209 0 kqueue 3 4K 4K 78643K 3 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 6 0 0 1 0 1 1 0 8 0 rtpcb 80 19 0 17 1 0 1 1 0 8 0 rtentry 112 45 0 1 2 0 2 2 0 8 0 unpcb 120 75 0 67 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 70 0 70 1 0 1 1 0 8 1 tcpcb 544 15 0 10 1 0 1 1 0 8 0 inpcb 280 57 0 49 1 0 1 1 0 8 0 nd6 48 6 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 188 0 0 12 0 12 12 0 8 0 art_table 32 189 0 0 2 0 2 2 0 8 0 art_node 16 44 0 4 1 0 1 1 0 8 0 semapl 112 4 0 0 1 0 1 1 0 8 0 shmpl 112 6 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1473 0 75 46 0 46 46 0 8 0 ffsino 240 1473 0 75 83 0 83 83 0 8 0 nchpl 144 1746 0 138 60 0 60 60 0 8 0 uvmvnodes 72 1531 0 0 28 0 28 28 0 8 0 vnodes 208 1531 0 0 81 0 81 81 0 8 0 vnodes: pool(0xffffffff825b67b8:vnodes): free list modified: page 0xfffffd805fa07000; item ordinal 0; addr 0xfffffd805fa07000 (p 0xfffffd805fa07000); offset 0x0=0x0 pool(vnodes): free list modified: page 0xfffffd805fa07000; item ordinal 0; addr 0xfffffd805fa07000 (p 0xfffffd805fa07000); offset 0x0=0x0 vnodes: pool(0xffffffff825b67b8:vnodes): page inconsistency: page 0xfffffd805fa07000; item ordinal 1; addr 0x6e3aadea306a403e namei 1024 4255 0 4254 1 0 1 1 0 8 0 scxspl 192 5009 0 5009 1 0 1 1 0 8 1 plimitpl 152 16 0 9 1 0 1 1 0 8 0 sigapl 424 252 0 224 4 0 4 4 0 8 0 futexpl 56 742 0 742 1 0 1 1 0 8 1 knotepl 112 53 0 34 1 0 1 1 0 8 0 kqueuepl 144 3 0 0 1 0 1 1 0 8 0 pipelkpl 16 74 0 63 1 0 1 1 0 8 0 pipepl 120 148 0 127 1 0 1 1 0 8 0 fdescpl 432 238 0 224 2 0 2 2 0 8 0 filepl 120 1264 0 1161 4 0 4 4 0 8 0 lockfpl 104 21 0 20 1 0 1 1 0 8 0 lockfspl 48 9 0 8 1 0 1 1 0 8 0 sessionpl 112 17 0 7 1 0 1 1 0 8 0 pgrppl 48 17 0 7 1 0 1 1 0 8 0 ucredpl 96 95 0 88 1 0 1 1 0 8 0 zombiepl 144 224 0 224 1 0 1 1 0 8 1 processpl 920 252 0 224 4 0 4 4 0 8 0 procpl 624 303 0 268 4 0 4 4 0 8 1 sockpl 400 151 0 133 3 0 3 3 0 8 1 mcl64k 65536 4 0 4 1 0 1 1 0 8 1 mcl12k 12288 3 0 3 1 0 1 1 0 8 1 mcl4k 4096 8 0 8 1 1 0 1 0 8 0 mcl2k 2048 61007 0 60964 16 3 13 13 0 8 7 mtagpl 80 6 0 2 2 1 1 1 0 8 0 mbufpl 256 96761 0 96683 10 1 9 9 0 8 0 bufpl 280 4099 0 163 282 0 282 282 0 8 0 anonpl 16 35914 0 22982 54 1 53 53 0 107 1 amapchunkpl 152 1491 0 1363 19 0 19 19 0 158 13 amappl16 192 925 0 228 35 0 35 35 0 8 0 amappl15 184 35 0 32 1 0 1 1 0 8 0 amappl14 176 5 0 3 2 1 1 1 0 8 0 amappl13 168 23 0 22 1 0 1 1 0 8 0 amappl12 160 5 0 5 1 1 0 1 0 8 0 amappl11 152 77 0 63 1 0 1 1 0 8 0 amappl10 144 15 0 11 1 0 1 1 0 8 0 amappl9 136 379 0 376 1 0 1 1 0 8 0 amappl8 128 256 0 245 1 0 1 1 0 8 0 amappl7 120 107 0 96 1 0 1 1 0 8 0 amappl6 112 36 0 32 1 0 1 1 0 8 0 amappl5 104 157 0 145 1 0 1 1 0 8 0 amappl4 96 447 0 417 1 0 1 1 0 8 0 amappl3 88 112 0 106 1 0 1 1 0 8 0 amappl2 80 1074 0 1010 3 0 3 3 0 8 1 amappl1 72 14244 0 13842 24 7 17 20 0 8 8 amappl 80 539 0 499 1 0 1 1 0 84 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 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 64 7 0 2 1 0 1 1 0 8 0 uaddrrnd 24 238 0 224 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 238 0 224 1 0 1 1 0 8 0 vmmpekpl 168 5754 0 5731 2 0 2 2 0 8 0 vmmpepl 168 35604 0 33878 97 3 94 94 0 357 18 vmsppl 272 237 0 224 2 0 2 2 0 8 1 pdppl 4096 482 0 448 6 0 6 6 0 8 1 pvpl 32 127781 0 111906 131 0 131 131 0 265 2 pmappl 200 237 0 224 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 146 0 7 4 0 4 4 0 8 0