Hi Florian, The error -29 is -ESPIPE : Illegal seek.
Probably it comes from here: if (offset > iob->io_pktlen) { ioberr("ERROR: offset is past the end of data: %u > %u\n", offset, iob->io_pktlen); return -ESPIPE; } Please try to enable CONFIG_IOB_DEBUG and see if the above error message is printed. Then you can track why it is failing. BR, Alan On 4/3/20, Florian Wehmeyer <flo...@gmx.net> wrote: > > Hi all, > > I need to update my app running on nuttx 8.2 system in a simple way, > this is why I've chosen the > > "Release System with ELF Programs: No Symbol Tables" approach. > > > My problem is the size of my elf file, it is up to 12K. > > This is basically because I've packed all the features into 1 task > (network, file I/O, json, etc) because it would be more simple to update > a single elf file rather than have a lot of different elf files for > different tasks and having to maintain a "repository" of those tasks. > > > My question is, is this somehow stupid to do? Is there a reason why I > should avoid to load "bigger" elf-files? > > The system has enough RAM: > > nsh> free > total used free largest > Umem: 229072 17760 211312 211136 > > > What happens is, when the elf file is bigger than about 4K, the binary > loader encounters a problem, independently on the config settings of the > elf buffer sizes: > > CONFIG_ELF_STACKSIZE=10240 > CONFIG_ELF_BUFFERSIZE=256 > CONFIG_ELF_BUFFERINCR=32 > > > here's part of the debug output: > > > elf_loadshdrs: Insufficient space in file for section header table > > elf_dumploadinfo: LOAD_INFO: > elf_dumploadinfo: textalloc: 00000000 > elf_dumploadinfo: dataalloc: 00000000 > elf_dumploadinfo: textsize: 0 > elf_dumploadinfo: datasize: 0 > elf_dumploadinfo: filelen: 5360 > elf_dumploadinfo: filfd: 3 > elf_dumploadinfo: symtabidx: 0 > elf_dumploadinfo: strtabidx: 0 > elf_dumploadinfo: ELF Header: > elf_dumploadinfo: e_ident: 7f 45 4c 46 > elf_dumploadinfo: e_type: 0001 > elf_dumploadinfo: e_machine: 0028 > elf_dumploadinfo: e_version: 00000001 > elf_dumploadinfo: e_entry: 00000555 > elf_dumploadinfo: e_phoff: 0 > elf_dumploadinfo: e_shoff: 5056 > elf_dumploadinfo: e_flags: 05000000 > elf_dumploadinfo: e_ehsize: 52 > elf_dumploadinfo: e_phentsize: 0 > elf_dumploadinfo: e_phnum: 0 > elf_dumploadinfo: e_shentsize: 40 > elf_dumploadinfo: e_shnum: 11 > elf_dumploadinfo: e_shstrndx: 8 > elf_loadbinary: Failed to load ELF program binary: -29 > > > Thanks a lot for any help!! > > Florian > > > > > > -- > Florian Wehmeyer > TFW Tech Solutions > >