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Thomas Gleixner
1638b8f096
A recent commit removed the NULL pointer check from the clock_getres()
implementation causing a test case to fault.
POSIX requires an explicit NULL pointer check for clock_getres() aside of
the validity check of the clock_id argument for obscure reasons.
Add it back for both 32bit and 64bit.
Note, this is only a partial revert of the offending commit which does not
bring back the broken fallback invocation in the the 32bit compat
implementations of clock_getres() and clock_gettime().
Fixes: a9446a906f ("lib/vdso/32: Remove inconsistent NULL pointer checks")
Reported-by: Andreas Schwab <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Tested-by: Christophe Leroy <[email protected]>
Cc: [email protected]
Link: https://lkml.kernel.org/r/[email protected]