Re: run_init: Fork:: No such file or directory

[Petre Rodan <kaiowas@gentoo.org>]

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On Sat, Oct 22, 2005 at 02:13:01PM +0100, Antoine Martin wrote:
> Next time, I'll wait before posting...
> I can't explain why that fixed it, but I rebooted, relabeled and now
> everything works ok. I've had issues with ttys/ptys before, I guess this
> is what has happened here.
> Not understanding the problem or the fix makes me nervous though.

it is a quite common problem that is happening since around ~ 2.6.9. sometimes even ssh logins are impossible because of this bug ("can't open pty" error IIRC).

for me the only way to unlock the situation is to close all open ssh terminals left open toward that server.
once that done, everything (including run_init behavior) returns to normal.

bye,
peter
 
> Thanks
> Antoine
> 
> 
> 
> On Sat, 2005-10-22 at 13:59 +0100, Antoine Martin wrote:
> > Hi,
> > 
> > I've been running a system with SELinux enforcing mode for some time
> > (Gentoo x86), but since yesterday I can't seem to use run_init to start
> > daemons, it fails with:
> > Fork:: No such file or directory
> > 
> > When I straced it, I found that it is failing to open /dev/ptmx|pty?? :
> > open("/dev/ptmx", O_RDWR)               = -1 EIO (Input/output error)
> > open("/dev/ptyp0", O_RDWR)              = -1 ENXIO (No such device or
> > address)
> > open("/dev/ptyp1", O_RDWR)              = -1 ENXIO (No such device or
> > address)
> > (...)
> > open("/dev/ptyef", O_RDWR)              = -1 ENXIO (No such device or
> > address)
> > dup(2)                                  = 3
> > fcntl64(3, F_GETFL)                     = 0x2 (flags O_RDWR)
> > brk(0)                                  = 0x804b000
> > brk(0x806c000)                          = 0x806c000
> > fstat64(3, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 1), ...}) = 0
> > mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> > 0) = 0xb7f17000
> > _llseek(3, 0, 0xbfc256e4, SEEK_CUR)     = -1 ESPIPE (Illegal seek)
> > write(3, "Fork:: No such file or directory"..., 33Fork:: No such file or
> > directory
> > ) = 33
> > close(3)                                = 0
> > munmap(0xb7f17000, 4096)                = 0
> > exit_group(71)                          = ?
> > 
> > Obviously, the devices are there and I'm not using devfs (kernel
> > 2.6.13.4) /dev is static on ext3 /.
> > I am really stumped. I've tried rebuilding it, rebuilding the libraries
> > it depends on, switched to non-enforcing mode, etc.. No luck
> > Any ideas would be much appreciated.

-- 
petre rodan
<kaiowas@gentoo.org>
Developer,
Hardened Gentoo Linux 

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