From: Jan Damborsky <Jan.Damborsky@devcom•cz>
To: Prakash kanthi <pkanthi@yahoo•com>
Cc: linuxppc-embedded@lists•linuxppc.org
Subject: Re: Linux Kernel hangs after execve("/bin/sh")
Date: Fri, 24 Jan 2003 07:44:52 +0100 [thread overview]
Message-ID: <3E30E0E4.6070400@devcom.cz> (raw)
In-Reply-To: 20030122091532.1705.qmail@web41202.mail.yahoo.com
[-- Attachment #1: Type: text/plain, Size: 2945 bytes --]
Prakash kanthi wrote:
>Hi FOlks,
>
>I finally reached the last step (hopefully) of linux
>kernel booting process. Kernel gets stuck after doing
>a 'execve("/bin/sh")'. I tried using different
>ramdisks, still no difference.
>
>I added few printk's in the source, following the
>function call path from 'execve' call. Following is
>the output. You can see that, execve goes through
>without any file permission problems and subsequently
>it tries to open /lib/ld.so.1 flawlessly. After that i
>see nothing on the terminal.
>
>---------
>init:Trying to bring /bin/sh up.
>do_execve:enter for /bin/sh
>open_exec:enter for /bin/sh.
>open_exec:Permission error=0.
>dentry_open:enter.
>dentry_open: after file->f_op->open. 0
>open_exec:enter for /lib/ld.so.1.
>open_exec:Permission error=0.
>dentry_open:enter.
>dentry_open: after file->f_op->open. 0
>do_execve: after search_binary_handler. retval=0
>-----------
>
>
>I wrote a small standalone program hello.c to test, if
>i can dynamically load it from init() instead of
>loading /bin/sh. I compiled the program added it to my
>ramdisk and called from init(). Following is the
>output. You can see that, it did all of it that it did
>for /bin/sh and also tried to open /etc/ld.so.preload
>and /etc/ld.so.cache and failed. But again towards the
>end, it tries to open /lib/libc.so.6 and succeds but
>still no output is displayed that hello.c is trying to
>print.
>
>---------
>init:Trying to bring /bin/hello up.
>do_execve:enter for /bin/hello
>open_exec:enter for /bin/hello.
>open_exec:Permission error=0.
>dentry_open:enter.
>dentry_open: after file->f_op->open. 0
>open_exec:enter for /lib/ld.so.1.
>open_exec:Permission error=0.
>dentry_open:enter.
>dentry_open: after file->f_op->open. 0
>do_execve: after search_binary_handler. retval=0
>sys_open:enter for /etc/ld.so.preload.
>sys_open:unused_fd=3.
>filp_open:enter for /etc/ld.so.preload.
>filp_open:open_namei error -2.
>sys_open:enter for /etc/ld.so.cache.
>sys_open:unused_fd=3.
>filp_open:enter for /etc/ld.so.cache.
>filp_open:open_namei error -2.
>sys_open:enter for /lib/libc.so.6.
>sys_open:unused_fd=3.
>filp_open:enter for /lib/libc.so.6.
>filp_open:open_namei error 0.
>dentry_open:enter.
>dentry_open: after file->f_op->open. 0
>-----------
>
>Can someone please throw some light on this?
>
>Thanks,
>Prakash
>
>
>
Hello Prakash,
I have had similar problem with HardHat Linux, but when
I have changed to ElinOS distribution from SYSGO corporation,
all works well. But I have find a little "HOWTO" to solve this
problem in HardHat Linux, may be it will help you a bit.
I am sorry I am not posting URL link to this document,
because I don't remember it, but I think document is not
so large so I am attaching it. Once more, I apologize to other people
who are not interested in this problem.
By,
Jan
[-- Attachment #2: LoadingSharedLibraryInHardHat.zip --]
[-- Type: application/x-zip-compressed, Size: 14481 bytes --]
next prev parent reply other threads:[~2003-01-24 6:44 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20030116083034.26873.qmail@web41206.mail.yahoo.com>
2003-01-22 0:05 ` busybox source Prakash kanthi
2003-01-22 0:29 ` HyunKook Kim
2003-01-22 5:57 ` Wolfgang Denk
2003-01-22 9:15 ` Linux Kernel hangs after execve("/bin/sh") Prakash kanthi
2003-01-22 9:47 ` Chirag Kantharia
2003-01-22 15:22 ` Linux Kernel hangs after execve('/bin/sh') Daris A Nevil
2003-01-22 19:50 ` Prakash kanthi
2003-01-22 20:14 ` Mark Pilon
2003-01-24 6:44 ` Jan Damborsky [this message]
2003-01-24 7:03 ` Linux Kernel hangs after execve("/bin/sh") Prakash kanthi
2003-01-22 20:35 Linux Kernel hangs after execve('/bin/sh') Jean-Denis Boyer
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