panic: ffs_valloc: dup alloc Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *114515 63693 0 0x2 0 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8346b2d8) at panic+0x1cf sys/kern/subr_prf.c:198 ffs_inode_alloc(fffff2806d63bb00,41ed,fffff28007ffd6e8,ffff80002a7d3bc8) at ffs_inode_alloc+0x94e ufs_mkdir(ffff80002a7d3c30) at ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 VOP_MKDIR(fffff2806f59dcd8,ffff80002a7d3d90,ffff80002a7d3dc0,ffff80002a7d3cc0) at VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 domkdirat(ffff80002a767a00,ffffff9c,7b09909b7640,1ff) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3063 syscall(ffff80002a7d3f30) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a7d3f30) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7b09909b76e0, count: 7 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: ffs_valloc: dup alloc ddb> show kasan No such command ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8346b2d8) at panic+0x1cf sys/kern/subr_prf.c:198 ffs_inode_alloc(fffff2806d63bb00,41ed,fffff28007ffd6e8,ffff80002a7d3bc8) at ffs_inode_alloc+0x94e ufs_mkdir(ffff80002a7d3c30) at ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 VOP_MKDIR(fffff2806f59dcd8,ffff80002a7d3d90,ffff80002a7d3dc0,ffff80002a7d3cc0) at VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 domkdirat(ffff80002a767a00,ffffff9c,7b09909b7640,1ff) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3063 syscall(ffff80002a7d3f30) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a7d3f30) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7b09909b76e0, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80002a7d3950 rbx 0x6656 __ALIGN_SIZE+0x5656 rdx 0 rcx 0 rax 0xffff80002a767a00 r8 0x101010101010101 r9 0x8080808080808080 r10 0xab5c254e68c8fcb7 r11 0x4ef7827ea6c5b6af r12 0 r13 0xfffff2806c88ba00 r14 0 r15 0x1 rip 0xffffffff81e12965 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a7d3940 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb> show proc PROC (syz-executor) tid=114515 pid=63693 tcnt=1 stat=onproc flags process=2 proc=0 runpri=17, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a766540,0xffff80002a7662b8 process=0xffff80002a79c010 user=0xffff80002a7ce000, vmspace=0xfffff2807f235cf0 estcpu=1, cpticks=3, pctcpu=0.0, user=1, sys=2, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 46730 5407 91272 0 2 0 syz-executor 73029 324141 79842 0 2 0 syz-executor 73029 111133 79842 0 3 0x4000080 ttyin syz-executor 55982 212659 45740 0 2 0 syz-executor 77904 175088 66550 0 2 0 syz-executor 77904 389855 66550 0 3 0x4000080 fsleep syz-executor 44534 329359 28657 0 2 0x4000c80 syz-executor 44534 448027 28657 0 3 0x4000080 fsleep syz-executor 44534 187447 28657 0 3 0x4000080 fsleep syz-executor 15943 389073 1 0 3 0x82 nanoslp getty 66550 130015 98781 0 3 0x82 nanoslp syz-executor 28657 10885 98781 0 3 0x82 nanoslp syz-executor 79842 442759 98781 0 2 0xc82 syz-executor 43981 277014 98781 0 2 0x2 syz-executor 91272 458912 98781 0 3 0x82 nanoslp syz-executor 45740 83216 98781 0 3 0x82 nanoslp syz-executor *63693 114515 98781 0 7 0x2 syz-executor 98781 55943 1 0 3 0x82 wait syz-executor 51983 461179 0 0 3 0x14200 bored smr 30945 342423 0 0 2 0x14200 zerothread 61017 324423 0 0 3 0x14200 aiodoned aiodoned 82690 227434 0 0 3 0x14200 syncer update 81305 199981 0 0 3 0x14200 cleaner cleaner 92485 435889 0 0 3 0x14200 reaper reaper 52034 13051 0 0 3 0x14200 pgdaemon pagedaemon 36729 19597 0 0 3 0x14200 bored viomb 75380 465050 0 0 3 0x40014200 acpi0 acpi0 67088 260177 0 0 3 0x14200 bored softnet0 15615 451630 0 0 3 0x14200 bored systqmp 90971 242010 0 0 3 0x14200 bored systq 90391 484620 0 0 3 0x40014200 tmoslp softclock 93516 290897 0 0 3 0x40014200 idle0 1 230504 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 11024 12100K 12171K 166960K 12135 0 pcb 17 12K 12K 166960K 31 0 rtable 245 7K 8K 166960K 371 0 pf 31 13K 13K 166960K 31 0 ifaddr 42 7K 7K 166960K 44 0 ifgroup 53 2K 2K 166960K 53 0 sysctl 1 1K 9K 166960K 5 0 counters 33 17K 17K 166960K 33 0 ioctlops 0 0K 4K 166960K 36 0 iov 0 0K 0K 166960K 1 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1292 81K 81K 166960K 1370 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 3 0K 0K 166960K 3 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1734 201K 291K 166960K 11964 0 file desc 14 53K 97K 166960K 169 0 proc 19 25K 124K 166960K 514 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 2 0 in_multi 99 7K 7K 166960K 99 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 49 228K 228K 166960K 49 0 exec 0 0K 1K 166960K 367 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 101 81K 156K 166960K 3262 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 17 34K 96K 166960K 1273 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 3 0 NDP 11 0K 2K 166960K 27 0 temp 33 9106K 9170K 166960K 5162 0 kqueue 1 2K 20K 166960K 31 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 38 0 38 1 0 1 1 0 8 1 rtentry 136 112 0 1 4 0 4 4 0 8 0 unpcb 144 49 0 49 1 0 1 1 0 8 1 syncache 336 5 0 5 1 0 1 1 0 8 1 tcpcb 736 15 0 13 1 0 1 1 0 8 0 arp 96 18 0 0 1 0 1 1 0 8 0 inpcb 328 86 0 84 2 0 2 2 0 8 1 nd6 112 25 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 pfsrclim 320 1 0 1 1 0 1 1 0 8 1 pfrule 1360 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 465 0 0 30 0 30 30 0 8 0 art_table 40 466 0 0 5 0 5 5 0 8 0 art_node 32 112 0 11 1 0 1 1 0 8 0 semapl 72 1 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1618 0 158 92 0 92 92 0 8 0 ffsino 256 1619 0 159 92 0 92 92 0 8 0 nchpl 144 1859 0 170 64 0 64 64 0 8 0 vnodes 216 1710 0 0 95 0 95 95 0 8 0 namei 1024 5574 0 5573 2 0 2 2 0 8 1 kstatmem 264 23 0 0 2 0 2 2 0 8 0 scxspl 216 7297 0 7297 8 0 8 8 1 8 8 plimitpl 152 33 0 23 1 0 1 1 0 8 0 sigapl 424 465 0 435 6 0 6 6 0 8 1 knotepl 120 3772 0 3755 2 0 2 2 0 8 0 kqueuepl 184 95 0 94 4 0 4 4 0 8 3 pipepl 304 124 0 97 3 0 3 3 0 8 0 fdescpl 448 452 0 435 5 0 5 5 0 8 1 filepl 120 1666 0 1512 8 0 8 8 0 8 1 lockfpl 104 12 0 12 1 0 1 1 0 8 1 lockfspl 48 6 0 6 1 0 1 1 0 8 1 sessionpl 144 24 0 22 1 0 1 1 0 8 0 pgrppl 48 32 0 22 1 0 1 1 0 8 0 ucredpl 104 112 0 109 1 0 1 1 0 8 0 zombiepl 144 436 0 435 1 0 1 1 0 8 0 processpl 1152 465 0 435 4 0 4 4 0 8 0 procpl 664 532 0 498 5 0 5 5 0 8 0 sockpl 552 206 0 204 3 0 3 3 0 8 2 mcl64k 65536 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2535 0 2486 13 0 13 13 0 8 6 mcl2k 2048 128 0 128 1 0 1 1 0 8 1 mextrefs 64 43 0 43 1 0 1 1 0 8 1 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 4461 0 4323 11 0 11 11 0 8 1 bufpl 272 2679 0 102 172 0 172 172 0 8 0 anonpl 24 90460 0 89177 30 0 30 30 0 187 14 amapchunkpl 152 9343 0 9095 30 0 30 30 0 158 15 amappl16 200 1502 0 1487 5 0 5 5 0 8 0 amappl15 192 6 0 6 1 0 1 1 0 8 1 amappl14 184 439 0 439 1 0 1 1 0 8 1 amappl13 176 121 0 120 1 0 1 1 0 8 0 amappl12 168 687 0 672 2 0 2 2 0 8 0 amappl11 160 1 0 1 1 0 1 1 0 8 1 amappl10 152 58 0 58 1 0 1 1 0 8 1 amappl9 144 273 0 273 1 0 1 1 0 8 1 amappl8 136 95 0 95 1 0 1 1 0 8 1 amappl7 128 145 0 143 1 0 1 1 0 8 0 amappl6 120 148 0 148 1 0 1 1 0 8 1 amappl5 112 108 0 108 1 0 1 1 0 8 1 amappl4 104 270 0 267 1 0 1 1 0 8 0 amappl3 96 1602 0 1547 3 0 3 3 0 8 0 amappl2 88 519 0 512 2 0 2 2 0 8 1 amappl1 80 10290 0 10182 13 0 13 13 0 8 7 amappl 88 2562 0 2475 4 0 4 4 0 92 0 uvmvnodes 80 99 0 0 3 0 3 3 0 8 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 24 452 0 435 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 452 0 435 1 0 1 1 0 8 0 vmmpekpl 168 5636 0 5600 2 0 2 2 0 8 0 vmmpepl 168 38246 0 37554 77 0 77 77 0 357 39 vmsppl 368 451 0 435 4 0 4 4 0 8 1 rwobjpl 40 14220 0 13856 11 0 11 11 0 8 0 pdppl 4096 910 0 870 96 50 46 82 0 8 6 pvpl 32 218308 0 214742 87 0 87 87 0 265 45 pmappl 216 451 0 435 3 0 3 3 0 8 0 extentpl 40 46 0 28 1 0 1 1 0 8 0 phpool 112 530 0 50 15 0 15 15 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8346b2d8) at panic+0x1cf sys/kern/subr_prf.c:198 ffs_inode_alloc(fffff2806d63bb00,41ed,fffff28007ffd6e8,ffff80002a7d3bc8) at ffs_inode_alloc+0x94e ufs_mkdir(ffff80002a7d3c30) at ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 VOP_MKDIR(fffff2806f59dcd8,ffff80002a7d3d90,ffff80002a7d3dc0,ffff80002a7d3cc0) at VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 domkdirat(ffff80002a767a00,ffffff9c,7b09909b7640,1ff) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3063 syscall(ffff80002a7d3f30) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a7d3f30) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7b09909b76e0, count: -8 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8346b2d8) at panic+0x1cf sys/kern/subr_prf.c:198 ffs_inode_alloc(fffff2806d63bb00,41ed,fffff28007ffd6e8,ffff80002a7d3bc8) at ffs_inode_alloc+0x94e ufs_mkdir(ffff80002a7d3c30) at ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 VOP_MKDIR(fffff2806f59dcd8,ffff80002a7d3d90,ffff80002a7d3dc0,ffff80002a7d3cc0) at VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 domkdirat(ffff80002a767a00,ffffff9c,7b09909b7640,1ff) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3063 syscall(ffff80002a7d3f30) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a7d3f30) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7b09909b76e0, count: -8 ddb>