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[Bug libc/20975] Deferred cancellation triggers in __check_pf and looses lock leading to deadlock.


https://sourceware.org/bugzilla/show_bug.cgi?id=20975

Carlos O'Donell <carlos at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://bugzilla.redhat.com
                   |                            |/show_bug.cgi?id=1405071

--- Comment #2 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Florian Weimer from comment #1)
> Do you have a test case for this?
> 
> Netlink is de-facto non-blocking, so we should use system calls which are
> not cancellation points, without a cancellation handler.

I do not have a test case for this. I reported this bug based on the inspection
of the called functions.

There is a related Red Hat bug:
https://bugzilla.redhat.com/show_bug.cgi?id=1405071

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