tools/vm/page-types.c: catch sigbus if raced with truncate

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commit 1d46598b79 upstream.

Recently added page-cache dumping is known to be a little bit racy.
But after race with truncate it just dies due to unhandled SIGBUS
when it tries to poke pages beyond the new end of file.
This patch adds handler for SIGBUS which skips the rest of the file.

Signed-off-by: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Konstantin Khlebnikov 2014-06-04 16:05:30 -07:00 • committed by Greg Kroah-Hartman

parent 5ff2117cf8

commit 99a9ff3961

1 changed files with 32 additions and 3 deletions

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tools/vm/page-types.c

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