On Thu, 2020-12-03 at 17:01 +0100, Jonathan Van den Broeck wrote: > Hi, > > Sorry in advance if it is not the right place for this type a > question, > I am tottally noob in mailing list. > > I try to use autofs on Solus 4.1 (http://getsol.us). It seems there > is > some problem with their package since version 5.1.3 and I want to > help > to solve the issue but I cannot figure what is the problem. > > I have try on fedora without any problem so I compare two strace to > see > the difference but it did not help me. It seems to crash when it need > to read the map file. > > Here is a link the issue with the initial description of the problem > and a link to the source build of the package : > https://dev.getsol.us/T9026 > https://dev.getsol.us/source/autofs/ In order to try and work out what's wrong it's necessary to know where the fault is occurring. That means you need to have debug symbols available one way or another. I don't know how that's done with Solus, in Fedora one installs the corresponding autofs-debuginfo and autofs-debusource packages. You might be able to get most of what's needed by changing the "environment:" line of the Solus package.yml and adding DEBUG=1 to the exported environment for the build but I don't really know the Solus build system works. Once you have a package with debugging information you can examine the core dump using coredumpctl(1) which should be installed as part of systemd. If you can get a build with debugging info then I can advise you further on how to get information about the crash, such as exactly where the fault occurred. > > SOLUS 4.1: > filovitch@solus ~/Downloads $ sudo automount -f -d -v > Starting automounter version 5.1.6, master map auto.master > using kernel protocol version 5.05 > lookup_nss_read_master: reading master files auto.master > lookup_read_master: lookup(file): read entry /misc > Segmentation fault > > filovitch@solus ~/Downloads $ sudo strace automount -f -d -v > ... > openat(AT_FDCWD, "/etc/auto.master", O_RDONLY|O_CLOEXEC) = 4 > fstat(4, {st_mode=S_IFREG|0644, st_size=1289, ...}) = 0 > read(4, "#\n# Sample auto.master file\n# Th"..., 4096) = 1289 > write(2, "lookup_read_master: lookup(file)"..., 50lookup_read_master: > lookup(file): read entry /misc) = 50 > write(2, "\n", 1 > ) = 1 > --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- > +++ killed by SIGSEGV (core dumped) +++ > Segmentation fault > > FEDORA 33: > [filovitch@localhost ~]$ sudo strace automount -f -d -v > ... > openat(AT_FDCWD, "/etc/auto.master", O_RDONLY|O_CLOEXEC) = 4 > fstat(4, {st_mode=S_IFREG|0644, st_size=1289, ...}) = 0 > read(4, "#\n# Sample auto.master file\n# Th"..., 4096) = 1289 > write(2, "lookup_read_master: lookup(file)"..., 50lookup_read_master: > lookup(file): read entry /misc) = 50 > write(2, "\n", 1 > ) > ioctl(0, TCGETS, {B38400 opost isig icanon echo ...}) = 0 > ioctl(0, TCGETS, {B38400 opost isig icanon echo ...}) = 0 > brk(NULL) = 0x55d0336bc000 > brk(0x55d0336de000) = 0x55d0336de000 > ... None of this is useful. Ian
