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futex: Reorder sanity checks in futex_requeue()
authorThomas Gleixner <tglx@linutronix.de>
Sun, 15 Aug 2021 21:29:15 +0000 (23:29 +0200)
committerIngo Molnar <mingo@kernel.org>
Tue, 17 Aug 2021 17:05:54 +0000 (19:05 +0200)
commitd69cba5c719b0c551f6380ec5da4ed8c20a3815a
treea402dea690a0e99a1cd54746e5f1fc52377e1857tree | snapshot
parentc18eaa3aca43688a3aee199d85ce4227686a29b6commit | diff
futex: Reorder sanity checks in futex_requeue()

No point in allocating memory when the input parameters are bogus.
Validate all parameters before proceeding.

Suggested-by: Davidlohr Bueso <dave@stgolabs.net>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20210815211305.581789253@linutronix.de
kernel/futex.c diff | blob | history
Domain: System / Kernel;