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authorAl Viro <viro@zeniv.linux.org.uk>2010-09-20 21:48:57 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2010-09-22 09:33:50 -0700
commit9a81c16b527528ad307843be5571111aa8d35a80 (patch)
tree4fea21edefa32d8e8e997f3db63f9cefaddff28c /scripts
parentb68e9d4581cbb211be3e174d3445b4917aacbcf6 (diff)
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powerpc: fix double syscall restarts
Make sigreturn zero regs->trap, make do_signal() do the same on all paths. As it is, signal interrupting e.g. read() from fd 512 (== ERESTARTSYS) with another signal getting unblocked when the first handler finishes will lead to restart one insn earlier than it ought to. Same for multiple signals with in-kernel handlers interrupting that sucker at the same time. Same for multiple signals of any kind interrupting that sucker on 64bit... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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