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Re: linux-kernel say bug
2003-12-04 19:10:36
I get the same error, but if you look at the next line:
Dec 4 13:15:25 mail kernel: application bug: dumper(12282) has SIGCHLD
set to SIG_IGN but calls wait().
Dec 4 13:15:25 mail kernel: (see the NOTES section of 'man 2 wait').
Workaround activated.
Then look at the man page on wait:
NOTES
The Single Unix Specification describes a flag SA_NOCLDWAIT
(not sup-
ported under Linux) such that if either this flag is set, or the
action
for SIGCHLD is set to SIG_IGN then children that exit do not
become
zombies and a call to wait() or waitpid() will block until all
children
have exited, and then fail with errno set to ECHILD.
The original POSIX standard left the behaviour of setting
SIGCHLD to
SIG_IGN unspecified. Later standards, including SUSv2 and
POSIX
1003.1-2001 specify the behaviour just described as an
XSI-compliance
option. Linux does not conform to the second of the two
points just
described: if a wait() or waitpid() call is made while SIGCHLD is
being
ignored, the call behaves just as though SIGCHLD were not being
ignored,
that is, the call blocks until the next child terminates
and then
returns the PID and status of that child.
So its really nothing serious, just something that should be fixed in
future versions.
-Greg
Mats Blomstrand wrote:
modified I don't recall. Is your's an older amanda release?
On that machine its amanda-2.4.4.
//Mats
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