panic: ffs_valloc: dup alloc Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *492939 62548 0 0x2 0 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8346a6ca) at panic+0x1cf sys/kern/subr_prf.c:198 ffs_inode_alloc(fffff9806d488700,41ed,fffff98007ffd618,ffff80002a80d9f8) at ffs_inode_alloc+0x94e ufs_mkdir(ffff80002a80da60) at ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 VOP_MKDIR(fffff9806d3ea7d0,ffff80002a80dbc0,ffff80002a80dbf0,ffff80002a80daf0) at VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 domkdirat(ffff80002a767a00,ffffff9c,714fd78c4ca0,1ff) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3062 syscall(ffff80002a80dd60) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a80dd60) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x714fd78c4d40, 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> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8346a6ca) at panic+0x1cf sys/kern/subr_prf.c:198 ffs_inode_alloc(fffff9806d488700,41ed,fffff98007ffd618,ffff80002a80d9f8) at ffs_inode_alloc+0x94e ufs_mkdir(ffff80002a80da60) at ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 VOP_MKDIR(fffff9806d3ea7d0,ffff80002a80dbc0,ffff80002a80dbf0,ffff80002a80daf0) at VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 domkdirat(ffff80002a767a00,ffffff9c,714fd78c4ca0,1ff) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3062 syscall(ffff80002a80dd60) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a80dd60) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x714fd78c4d40, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80002a80d780 rbx 0xcbc4 __ALIGN_SIZE+0xbbc4 rdx 0 rcx 0 rax 0xffff80002a767a00 r8 0x101010101010101 r9 0x8080808080808080 r10 0x4812a7f3ed04be56 r11 0x467cb326ecb1adde r12 0 r13 0xfffff9806cf88900 r14 0 r15 0x1 rip 0xffffffff82bedc35 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a80d770 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb> show proc PROC (syz-executor) tid=492939 pid=62548 tcnt=1 stat=onproc flags process=2 proc=0 runpri=17, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a767768,0xffff80002a736a78 process=0xffff80002a79c490 user=0xffff80002a808000, vmspace=0xfffff9806ff02008 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 48189 238972 1 0 3 0x100083 ttyin getty 17838 277347 77353 0 3 0x82 piperd syz-executor 39947 412248 77353 0 3 0x82 piperd syz-executor *62548 492939 77353 0 7 0x2 syz-executor 77353 406549 1 0 3 0x82 nanoslp syz-executor 74588 122698 0 0 3 0x14200 bored smr 528 27093 0 0 2 0x14200 zerothread 15246 105904 0 0 3 0x14200 aiodoned aiodoned 20868 92920 0 0 3 0x14200 syncer update 68699 345470 0 0 3 0x14200 cleaner cleaner 15870 114304 0 0 3 0x14200 reaper reaper 61278 399738 0 0 3 0x14200 pgdaemon pagedaemon 35729 434808 0 0 3 0x14200 bored viomb 89465 390901 0 0 3 0x40014200 acpi0 acpi0 30022 518474 0 0 3 0x14200 bored softnet0 13804 262775 0 0 3 0x14200 bored systqmp 15417 182551 0 0 3 0x14200 bored systq 76278 232589 0 0 3 0x40014200 tmoslp softclock 48904 40939 0 0 3 0x40014200 idle0 1 198033 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 11028 12227K 12358K 166960K 12323 0 pcb 17 13K 14K 166960K 90 0 rtable 213 5K 6K 166960K 381 0 pf 30 13K 13K 166960K 44 0 ifaddr 37 6K 7K 166960K 53 0 ifgroup 46 2K 2K 166960K 62 0 sysctl 3 1K 9K 166960K 8 0 counters 32 17K 17K 166960K 39 0 ioctlops 0 0K 4K 166960K 132 0 iov 0 0K 12K 166960K 7 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1301 82K 82K 166960K 1568 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 3 0 VM map 2 1K 1K 166960K 2 0 sem 6 0K 0K 166960K 9 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 8 29K 232K 166960K 336 0 sigio 0 0K 0K 166960K 6 0 proc 20 25K 83K 166960K 524 0 subproc 63 3K 5K 166960K 135 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 20 0 in_multi 84 6K 7K 166960K 105 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 12 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 67 307K 307K 166960K 67 0 exec 0 0K 1K 166960K 386 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 67 64K 158K 166960K 4416 0 UVM aobj 72 7K 7K 166960K 74 0 pinsyscall 11 22K 94K 166960K 1437 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 7 0 NDP 10 0K 1K 166960K 34 0 temp 34 9102K 9150K 166960K 11968 0 kqueue 1 2K 30K 166960K 60 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 55 0 55 1 0 1 1 0 8 1 rtentry 136 120 0 22 4 0 4 4 0 8 0 unpcb 144 154 0 154 2 0 2 2 0 8 2 syncache 336 5 0 5 1 0 1 1 0 8 1 tcpcb 736 73 0 72 4 0 4 4 0 8 3 arp 96 18 0 2 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 2 0 1 1 0 1 1 0 8 0 inpcb 328 255 0 254 4 0 4 4 0 8 3 ip6q 72 1 0 0 1 0 1 1 0 8 0 ip6af 40 1 0 0 1 0 1 1 0 8 0 nd6 112 29 0 8 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 0 1 1 0 8 1 kcovpl 48 15 0 8 1 0 1 1 0 8 0 ppxss 1072 6 0 6 1 0 1 1 0 8 1 pfstscr 40 68 0 66 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfqueue 320 1 0 0 1 0 1 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 68 0 66 1 0 1 1 0 8 0 pfstate 384 34 0 33 1 0 1 1 0 8 0 pfrule 1360 2 0 2 1 0 1 1 0 8 1 rttmr 136 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 256 498 0 99 31 0 31 31 0 8 2 art_table 40 499 0 99 6 0 6 6 0 8 0 art_node 32 120 0 30 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 0 1 0 1 1 0 8 0 semapl 72 6 0 2 1 0 1 1 0 8 0 shmpl 112 71 0 2 3 0 3 3 0 8 1 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1918 0 459 92 0 92 92 0 8 0 ffsino 256 1920 0 461 92 0 92 92 0 8 0 nchpl 144 2335 0 642 64 0 64 64 0 8 0 vnodes 216 2125 0 0 119 0 119 119 0 8 0 namei 1024 7635 0 7634 2 0 2 2 0 8 1 kstatmem 264 35 0 14 2 0 2 2 0 8 0 scsiplug 72 3 0 3 1 0 1 1 0 8 1 scxspl 216 7730 0 7730 3 0 3 3 1 8 3 plimitpl 152 61 0 52 1 0 1 1 0 8 0 sigapl 424 608 0 584 6 0 6 6 0 8 1 knotepl 120 8913 0 8896 16 6 10 16 0 8 8 kqueuepl 184 76 0 75 1 0 1 1 0 8 0 pipepl 304 153 0 126 3 0 3 3 0 8 0 fdescpl 448 595 0 584 5 0 5 5 0 8 1 filepl 120 3072 0 2938 11 0 11 11 0 8 4 lockfpl 104 224 0 224 2 0 2 2 0 8 2 lockfspl 48 44 0 44 1 0 1 1 0 8 1 sessionpl 144 36 0 33 1 0 1 1 0 8 0 pgrppl 48 53 0 43 1 0 1 1 0 8 0 ucredpl 104 507 0 504 1 0 1 1 0 8 0 zombiepl 144 588 0 584 1 0 1 1 0 8 0 processpl 1152 608 0 584 4 0 4 4 0 8 0 procpl 664 873 0 849 5 0 5 5 0 8 1 sockpl 552 471 0 470 7 0 7 7 0 8 6 mcl64k 65536 9 0 9 1 0 1 1 0 8 1 mcl16k 16384 2 0 2 1 0 1 1 0 8 1 mcl12k 12288 1 0 1 1 0 1 1 0 8 1 mcl9k128 9344 3 0 3 1 0 1 1 0 8 1 mcl8k 8192 43 0 43 1 0 1 1 0 8 1 mcl4k 4096 2754 0 2696 15 0 15 15 0 8 7 mcl2k 2048 280 0 279 3 0 3 3 0 8 2 mtagpl 96 5 0 4 1 0 1 1 0 8 0 mbufpl 256 6321 0 6197 19 0 19 19 0 8 6 bufpl 272 2707 0 105 174 0 174 174 0 8 0 anonpl 24 90997 0 90006 23 0 23 23 0 187 6 amapchunkpl 152 12768 0 12625 25 0 25 25 0 158 12 amappl16 200 1163 0 1148 4 0 4 4 0 8 2 amappl15 192 6 0 6 1 0 1 1 0 8 1 amappl14 184 413 0 413 1 0 1 1 0 8 1 amappl13 176 126 0 125 1 0 1 1 0 8 0 amappl12 168 839 0 829 2 0 2 2 0 8 0 amappl11 160 4 0 4 1 0 1 1 0 8 1 amappl10 152 101 0 101 1 0 1 1 0 8 1 amappl9 144 273 0 273 1 0 1 1 0 8 1 amappl8 136 94 0 93 1 0 1 1 0 8 0 amappl7 128 144 0 142 1 0 1 1 0 8 0 amappl6 120 148 0 148 1 0 1 1 0 8 1 amappl5 112 99 0 98 1 0 1 1 0 8 0 amappl4 104 270 0 267 1 0 1 1 0 8 0 amappl3 96 2474 0 2444 3 0 3 3 0 8 0 amappl2 88 531 0 521 2 0 2 2 0 8 0 amappl1 80 10858 0 10773 13 0 13 13 0 8 7 amappl 88 3678 0 3623 4 0 4 4 0 92 0 uvmvnodes 80 102 0 0 3 0 3 3 0 8 0 dma16384 16384 1 0 1 1 0 1 1 0 8 1 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 128 256 0 256 1 0 1 1 0 8 1 dma64 64 7 0 7 1 0 1 1 0 8 1 dma32 32 7 0 7 1 0 1 1 0 8 1 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 73 0 2 2 0 2 2 0 8 0 uaddrrnd 24 595 0 584 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 595 0 584 1 0 1 1 0 8 0 vmmpekpl 168 6835 0 6801 2 0 2 2 0 8 0 vmmpepl 168 45804 0 45384 81 0 81 81 0 357 41 vmsppl 368 594 0 584 4 0 4 4 0 8 1 rwobjpl 40 15298 0 14899 11 0 11 11 0 8 0 pdppl 4096 1196 0 1168 96 58 38 80 0 8 10 pvpl 32 261884 0 259628 78 0 78 78 0 265 29 pmappl 216 594 0 584 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 550 0 58 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(ffffffff8346a6ca) at panic+0x1cf sys/kern/subr_prf.c:198 ffs_inode_alloc(fffff9806d488700,41ed,fffff98007ffd618,ffff80002a80d9f8) at ffs_inode_alloc+0x94e ufs_mkdir(ffff80002a80da60) at ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 VOP_MKDIR(fffff9806d3ea7d0,ffff80002a80dbc0,ffff80002a80dbf0,ffff80002a80daf0) at VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 domkdirat(ffff80002a767a00,ffffff9c,714fd78c4ca0,1ff) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3062 syscall(ffff80002a80dd60) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a80dd60) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x714fd78c4d40, 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(ffffffff8346a6ca) at panic+0x1cf sys/kern/subr_prf.c:198 ffs_inode_alloc(fffff9806d488700,41ed,fffff98007ffd618,ffff80002a80d9f8) at ffs_inode_alloc+0x94e ufs_mkdir(ffff80002a80da60) at ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 VOP_MKDIR(fffff9806d3ea7d0,ffff80002a80dbc0,ffff80002a80dbf0,ffff80002a80daf0) at VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 domkdirat(ffff80002a767a00,ffffff9c,714fd78c4ca0,1ff) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3062 syscall(ffff80002a80dd60) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a80dd60) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x714fd78c4d40, count: -8 ddb>