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uml: install panic notifier earlier

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It turns out that if there's a panic early enough, UML will just sit there in
the LED-blinking loop because the panic notifier hadn't been installed yet.

This patch installs it earlier.

It also fixes the problem which exposed the hang, namely that if you give UML
a zero-sized initrd, it will ask alloc_bootmem for zero bytes, and that will
cause the panic.

While I was in initrd.c, I gave it a style makeover.

Prompted by checkpatch, I moved a couple extern declarations of uml_exitcode
to kern_util.h.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jeff Dike 2008-02-04 22:31:08 -08:00 • committed by Linus Torvalds
parent 8efa3c9d54
commit 0983a88b9f
4 changed files with 42 additions and 32 deletions
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2
arch/um/os-Linux/main.c
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@ -111,8 +111,6 @@ static void setup_env_path(void)
}
}
extern int uml_exitcode;
extern void scan_elf_aux( char **envp);
int __init main(int argc, char **argv, char **envp)