panic: ffs_valloc: dup alloc Stopped at db_enter+0x17: popq %rbp TID PID UID PRFLAGS PFLAGS CPU COMMAND *404690 34243 0 0x1000 0x4080000 0K syz-executor 43491 91576 0 0 0x4000001 1 syz-executor db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff84b76d20) at panic+0x270 sys/kern/subr_prf.c:198 ffs_inode_alloc(ffff800001d4aac0,1040,ffff800000119410,ffff80003bb63ff0) at ffs_inode_alloc+0xcd7 ufs_makeinode(1040,ffff800001dc42d0,ffff80003bb64350,ffff80003bb64380) at ufs_makeinode+0x1a1 sys/ufs/ufs/ufs_vnops.c:1759 ufs_mknod(ffff80003bb64140) at ufs_mknod+0xd8 sys/ufs/ufs/ufs_vnops.c:167 VOP_MKNOD(ffff800001dc42d0,ffff80003bb64350,ffff80003bb64380,ffff80003bb64240) at VOP_MKNOD+0x1a8 sys/kern/vfs_vops.c:121 domknodat(ffff800045ff5248,ffffff9c,200000000100,1040,0) at domknodat+0x57b sys/kern/vfs_syscalls.c:1579 syscall(ffff80003bb64640) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003bb64640) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9317c3de380, count: 6 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: ffs_valloc: dup alloc ddb{0}> show kasan kasan: no report recorded this boot ddb{0}> trace db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff84b76d20) at panic+0x270 sys/kern/subr_prf.c:198 ffs_inode_alloc(ffff800001d4aac0,1040,ffff800000119410,ffff80003bb63ff0) at ffs_inode_alloc+0xcd7 ufs_makeinode(1040,ffff800001dc42d0,ffff80003bb64350,ffff80003bb64380) at ufs_makeinode+0x1a1 sys/ufs/ufs/ufs_vnops.c:1759 ufs_mknod(ffff80003bb64140) at ufs_mknod+0xd8 sys/ufs/ufs/ufs_vnops.c:167 VOP_MKNOD(ffff800001dc42d0,ffff80003bb64350,ffff80003bb64380,ffff80003bb64240) at VOP_MKNOD+0x1a8 sys/kern/vfs_vops.c:121 domknodat(ffff800045ff5248,ffffff9c,200000000100,1040,0) at domknodat+0x57b sys/kern/vfs_syscalls.c:1579 syscall(ffff80003bb64640) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003bb64640) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9317c3de380, count: -9 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003bb63c30 rbx 0xffff80003bb63ca0 rdx 0 rcx 0xffffffff84ecfff0 cpu_info_full_primary+0x1ff0 rax 0xffff80000016fe00 r8 0x101010101010101 r9 0x8080808080808080 r10 0xffff80003bb63c18 r11 0xffffffff837dc8b0 x86_bus_space_io_read_1 r12 0xffffffff84b76d20 .str.17 r13 0xffffffff84ed0c08 cpu_info_full_primary+0x2c08 r14 0xffffffff84ed0e07 cpu_info_full_primary+0x2e07 r15 0x1 rip 0xffffffff82274897 db_enter+0x17 cs 0x8 rflags 0x246 rsp 0xffff80003bb63c30 ss 0x10 db_enter+0x17: popq %rbp ddb{0}> show proc PROC (syz-executor) tid=404690 pid=34243 tcnt=3 stat=onproc flags process=1000 proc=4080000 runpri=17, usrpri=81, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0xffff800045fee7f0 scnt=2 ecnt=0 forw=0xffffffffffffffff, list=0xffff800045fee7f0,0xffff800045ffdcb0 process=0xffff800045fe9368 user=0xffff80003bb59000, vmspace=0xffff800001c9d3f0 estcpu=31, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND 79580 183654 51069 0 2 0 0 syz-executor 34243 232899 24985 0 3 0x1000 0x2000 suspend syz-executor *34243 404690 24985 0 7 0x1000 0x4080000 syz-executor 34243 158105 24985 0 3 0x1000 0x4080000 inode syz-executor 91576 255483 5998 0 2 0 0 syz-executor 91576 4184 5998 0 2 0 0x4000000 syz-executor 91576 43491 5998 0 7 0 0x4000001 syz-executor 89521 307075 75908 0 2 0x2 0 syz-executor 7519 339562 0 0 3 0x14000 0x280 nfsidl nfsio 11627 481749 0 0 3 0x14000 0x280 nfsidl nfsio 36414 498684 0 0 3 0x14000 0x280 nfsidl nfsio 82761 351438 0 0 3 0x14000 0x280 nfsidl nfsio 857 483899 0 0 3 0x14000 0x280 nfsidl nfsio 20205 59402 0 0 3 0x14000 0x280 nfsidl nfsio 92214 475919 0 0 3 0x14000 0x280 nfsidl nfsio 90886 188912 0 0 3 0x14000 0x280 nfsidl nfsio 46722 132500 0 0 3 0x14000 0x280 nfsidl nfsio 24617 504410 0 0 3 0x14000 0x280 nfsidl nfsio 73075 273503 0 0 3 0x14000 0x280 nfsidl nfsio 19287 369001 0 0 3 0x14000 0x280 nfsidl nfsio 93974 302293 0 0 3 0x14000 0x280 nfsidl nfsio 32235 388440 0 0 3 0x14000 0x280 nfsidl nfsio 15679 291453 0 0 3 0x14000 0x280 nfsidl nfsio 40254 450387 0 0 3 0x14000 0x280 nfsidl nfsio 47863 170007 0 0 3 0x14000 0x280 nfsidl nfsio 62187 106958 0 0 3 0x14000 0x280 nfsidl nfsio 25382 143314 0 0 3 0x14000 0x280 nfsidl nfsio 80593 59334 0 0 3 0x14000 0x280 nfsidl nfsio 51069 205496 75908 0 2 0x2 0xc80 syz-executor 69690 228363 75908 0 2 0x10000002 0xc80 syz-executor 10429 223347 75908 0 2 0x10000002 0xc80 syz-executor 5998 302691 75908 0 2 0x2 0xc80 syz-executor 24985 120145 75908 0 2 0x2 0xc80 syz-executor 73302 272343 75908 0 2 0x2 0 syz-executor 26094 476507 75908 0 2 0x10000002 0xc80 syz-executor 75908 514871 24966 0 3 0x2 0x80 kqread syz-executor 24966 308716 51200 0 3 0x100002 0x88 sigsusp ksh 51200 83713 94979 0 3 0x10 0x88 kqread sshd-session 94979 40776 48637 0 3 0x12 0x80 kqread sshd-session 58253 401936 1 0 3 0x100003 0x80 ttyin getty 48637 280030 1 0 3 0 0x88 kqread sshd 5784 30731 41696 74 3 0x1100012 0x80 bpf pflogd 41696 103146 1 0 3 0 0x80 sbwait pflogd 38173 304771 31172 73 3 0x1100010 0x80 kqread syslogd 31172 224698 1 0 3 0x100002 0x80 sbwait syslogd 62542 381104 1 0 3 0x100000 0x80 kqread resolvd 20135 185540 2839 77 3 0x100012 0x80 kqread dhcpleased 47944 252629 2839 77 3 0x100012 0x80 kqread dhcpleased 2839 430864 1 0 3 0 0x80 kqread dhcpleased 41939 251515 0 0 2 0x14000 0x40000200 smr 38390 389351 0 0 2 0x14000 0x200 zerothread 65211 459815 0 0 3 0x14000 0x200 aiodoned aiodoned 4192 465783 0 0 3 0x14000 0x200 syncer update 1033 228760 0 0 3 0x14000 0x200 cleaner cleaner 75066 261457 0 0 3 0x14000 0x200 reaper reaper 78578 220969 0 0 3 0x14000 0x200 pgdaemon pagedaemon 14563 279031 0 0 3 0x14000 0x200 bored viomb 23119 286572 0 0 3 0x14000 0x40000200 acpi0 acpi0 13032 185303 0 0 3 0x14000 0x40000200 idle1 8198 241267 0 0 3 0x14000 0x200 bored softnet1 3913 182262 0 0 3 0x14000 0x200 bored softnet0 85919 40624 0 0 3 0x14000 0x200 bored systqmp 46167 68258 0 0 3 0x14000 0x200 bored systq 95068 347498 0 0 3 0x14000 0x200 tmoslp softclockmp 7365 378594 0 0 3 0x14000 0x40000200 tmoslp softclock 34704 97196 0 0 3 0x14000 0x40000200 idle0 1 490029 0 0 3 0x2 0x80 wait init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb{0}> show all locks Process 34243 (syz-executor) thread 0xffff800045ff5248 (404690) Process 89521 (syz-executor) thread 0xffff800045feefb8 (307075) Process 73302 (syz-executor) thread 0xffff8000299222a8 (272343) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11061 12262K 12526K 166960K 12399 0 pcb 17 24K 24K 166960K 39 0 rtable 241 12K 13K 166960K 385 0 pf 36 23K 38K 166960K 74 0 ifaddr 43 12K 13K 166960K 55 0 ifgroup 55 2K 2K 166960K 74 0 sysctl 1 1K 13K 166960K 5 0 counters 70 42K 43K 166960K 80 0 ioctlops 0 0K 4K 166960K 1658 0 iov 0 0K 8K 166960K 8 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1366 88K 88K 166960K 1613 0 UFS quota 1 36K 36K 166960K 1 0 UFS mount 5 44K 44K 166960K 5 0 shm 2 2K 10K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 7 0K 1K 166960K 8 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1734 201K 292K 166960K 11964 0 file desc 13 45K 97K 166960K 304 0 sigio 0 0K 0K 166960K 3 0 proc 70 128K 177K 166960K 606 0 subproc 72 9K 9K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 20K 20K 166960K 1 0 ip_moptions 0 0K 0K 166960K 12 0 in_multi 99 7K 7K 166960K 110 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 17 0 ISOFS mount 1 36K 36K 166960K 1 0 MSDOSFS mount 1 20K 20K 166960K 1 0 ttys 55 384K 384K 166960K 55 0 exec 0 0K 2K 166960K 400 0 fusefs mount 1 36K 36K 166960K 1 0 tdb 3 1K 1K 166960K 3 0 VM swap 14 124K 124K 166960K 15 0 UVM amap 204 255K 276K 166960K 4602 0 UVM aobj 8 4K 4K 166960K 10 0 pinsyscall 1062 1780K 1785K 166960K 1489 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 1 0 NDP 12 0K 2K 166960K 35 0 temp 36 9162K 9182K 166960K 7115 0 kqueue 13 40K 65K 166960K 66 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 28 0 0 1 0 1 1 0 8 0 rtpcb 120 35 0 32 1 0 1 1 0 8 0 rtentry 176 124 0 12 6 0 6 6 0 8 0 unpcb 144 154 0 136 2 1 1 2 0 8 0 syncache 336 4 0 4 2 2 0 1 0 8 0 tcpcb 736 80 0 76 7 4 3 7 0 8 2 arp 136 20 0 2 1 0 1 1 0 8 0 inpcb 328 257 0 250 10 5 5 10 0 8 4 nd6 152 29 0 3 1 0 1 1 0 8 0 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1192 1 0 1 1 0 1 1 0 8 1 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pftag 88 3 0 0 1 0 1 1 0 8 0 pfqueue 320 1 0 0 1 0 1 1 0 8 0 pfstitem 24 34 0 0 1 0 1 1 0 8 0 pfstkey 128 34 0 0 2 0 2 2 0 8 0 pfstate 448 34 0 0 4 0 4 4 0 8 0 pfrule 1360 26 0 20 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 500 0 44 29 0 29 29 0 8 0 art_table 40 501 0 44 5 0 5 5 0 8 0 art_node 32 124 0 22 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 2 1 0 1 1 0 8 1 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 72 5 0 0 1 0 1 1 0 8 0 shmpl 112 7 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1880 0 406 93 0 93 93 0 8 0 ffsino 296 1880 0 406 114 0 114 114 0 8 0 nchpl 144 2306 0 601 64 0 64 64 0 8 0 vnodes 216 2128 0 0 119 0 119 119 0 8 0 namei 1024 7671 0 7667 2 1 1 1 0 8 0 percpumem 16 56 0 5 1 0 1 1 0 8 0 kstatmem 264 37 0 10 3 0 3 3 0 8 1 scxspl 216 8343 0 8343 4 3 1 3 1 8 1 plimitpl 152 38 0 20 1 0 1 1 0 8 0 sigapl 424 640 0 574 8 0 8 8 0 8 0 knotepl 120 142 0 0 5 0 5 5 0 8 0 kqueuepl 224 122 0 112 3 0 3 3 0 8 2 pipepl 344 190 0 163 3 0 3 3 0 8 0 fdescpl 528 604 0 577 3 0 3 3 0 8 0 filepl 160 2966 0 2754 15 1 14 14 0 8 4 lockfpl 104 224 0 221 2 0 2 2 0 8 1 lockfspl 48 109 0 106 1 0 1 1 0 8 0 sessionpl 144 39 0 30 1 0 1 1 0 8 0 pgrppl 48 53 0 36 1 0 1 1 0 8 0 ucredpl 104 341 0 328 1 0 1 1 0 8 0 zombiepl 144 578 0 574 1 0 1 1 0 8 0 processpl 1232 640 0 574 6 0 6 6 0 8 0 procpl 664 910 0 840 7 0 7 7 0 8 0 sosppl 176 1 0 1 1 0 1 1 0 8 1 sockpl 752 447 0 419 14 7 7 14 0 8 3 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 113 0 0 15 0 15 15 0 8 1 mcl2k 2048 20 0 0 3 0 3 3 0 8 0 mextrefs 64 20 0 0 1 0 1 1 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 182 0 0 12 0 12 12 0 8 0 bufpl 272 2747 0 107 176 0 176 176 0 8 0 anonpl 32 7894 0 0 64 0 64 64 0 222 0 amapchunkpl 152 13753 0 13356 27 4 23 26 0 158 3 amappl16 200 2564 0 2299 18 3 15 15 0 8 0 amappl15 192 10 0 10 2 2 0 1 0 8 0 amappl14 184 446 0 445 1 0 1 1 0 8 0 amappl13 176 126 0 114 1 0 1 1 0 8 0 amappl12 168 858 0 832 2 0 2 2 0 8 0 amappl11 160 8 0 8 3 3 0 1 0 8 0 amappl10 152 65 0 51 1 0 1 1 0 8 0 amappl9 144 272 0 272 1 1 0 1 0 8 0 amappl8 136 108 0 105 1 0 1 1 0 8 0 amappl7 128 174 0 160 1 0 1 1 0 8 0 amappl6 120 166 0 165 1 0 1 1 0 8 0 amappl5 112 111 0 101 1 0 1 1 0 8 0 amappl4 104 334 0 315 1 0 1 1 0 8 0 amappl3 96 2415 0 2337 3 0 3 3 0 8 0 amappl2 88 722 0 646 2 0 2 2 0 8 0 amappl1 80 11225 0 10640 15 2 13 15 0 8 0 amappl 88 3842 0 3710 6 1 5 5 0 92 0 uvmvnodes 80 102 0 0 3 0 3 3 0 8 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 9 0 2 1 0 1 1 0 8 0 uaddrrnd 24 604 0 577 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 604 0 577 1 0 1 1 0 8 0 vmmpekpl 168 7002 0 6960 3 0 3 3 0 8 0 vmmpepl 168 48097 0 46169 96 0 96 96 0 357 2 vmsppl 488 603 0 577 5 1 4 5 0 8 0 rwobjpl 80 17163 0 15921 27 0 27 27 0 8 0 pdppl 4096 1217 0 1154 107 36 71 89 0 8 8 pvpl 32 15556 0 0 128 2 126 126 0 265 0 pmappl 256 603 0 577 3 0 3 3 0 8 0 extentpl 40 47 0 29 1 0 1 1 0 8 0 phpool 120 464 0 46 13 0 13 13 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff84b76d20) at panic+0x270 sys/kern/subr_prf.c:198 ffs_inode_alloc(ffff800001d4aac0,1040,ffff800000119410,ffff80003bb63ff0) at ffs_inode_alloc+0xcd7 ufs_makeinode(1040,ffff800001dc42d0,ffff80003bb64350,ffff80003bb64380) at ufs_makeinode+0x1a1 sys/ufs/ufs/ufs_vnops.c:1759 ufs_mknod(ffff80003bb64140) at ufs_mknod+0xd8 sys/ufs/ufs/ufs_vnops.c:167 VOP_MKNOD(ffff800001dc42d0,ffff80003bb64350,ffff80003bb64380,ffff80003bb64240) at VOP_MKNOD+0x1a8 sys/kern/vfs_vops.c:121 domknodat(ffff800045ff5248,ffffff9c,200000000100,1040,0) at domknodat+0x57b sys/kern/vfs_syscalls.c:1579 syscall(ffff80003bb64640) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003bb64640) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9317c3de380, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x19: leave x86_ipi_db(ffff800028ff3ff0) at x86_ipi_db+0x19 sys/arch/amd64/amd64/db_interface.c:412 x86_ipi_handler() at x86_ipi_handler+0x112 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 kasan_shadow_4byte_isvalid(ffffffff8543a978) at kasan_shadow_4byte_isvalid+0x3a sys/kern/kasan_shadow.h:130 __asan_load4_noabort(ffffffff8543a978) at __asan_load4_noabort+0x53 kasan_shadow_check sys/kern/subr_kasan.c:-1 [inline] __asan_load4_noabort(ffffffff8543a978) at __asan_load4_noabort+0x53 sys/kern/subr_kasan.c:1098 __mp_lock(ffffffff8543a180) at __mp_lock+0x27a __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff8543a180) at __mp_lock+0x27a sys/kern/kern_lock.c:173 ktrstruct(ffff80003bba34f0,ffffffff84cf8fa0,ffff80003731c0c0,100) at ktrstruct+0x13f sys/kern/kern_ktrace.c:314 sys_kevent(ffff80003bba34f0,ffff80003731c400,ffff80003731c360) at sys_kevent+0x3b2 sys/kern/kern_event.c:1296 syscall(ffff80003731c400) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003731c400) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x26aa5c87120, count: 5 ddb{1}> trace x86_ipi_db(ffff800028ff3ff0) at x86_ipi_db+0x19 sys/arch/amd64/amd64/db_interface.c:412 x86_ipi_handler() at x86_ipi_handler+0x112 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 kasan_shadow_4byte_isvalid(ffffffff8543a978) at kasan_shadow_4byte_isvalid+0x3a sys/kern/kasan_shadow.h:130 __asan_load4_noabort(ffffffff8543a978) at __asan_load4_noabort+0x53 kasan_shadow_check sys/kern/subr_kasan.c:-1 [inline] __asan_load4_noabort(ffffffff8543a978) at __asan_load4_noabort+0x53 sys/kern/subr_kasan.c:1098 __mp_lock(ffffffff8543a180) at __mp_lock+0x27a __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff8543a180) at __mp_lock+0x27a sys/kern/kern_lock.c:173 ktrstruct(ffff80003bba34f0,ffffffff84cf8fa0,ffff80003731c0c0,100) at ktrstruct+0x13f sys/kern/kern_ktrace.c:314 sys_kevent(ffff80003bba34f0,ffff80003731c400,ffff80003731c360) at sys_kevent+0x3b2 sys/kern/kern_event.c:1296 syscall(ffff80003731c400) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003731c400) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x26aa5c87120, count: -10