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d7ad05c86e
When tmigr_setup_groups() fails the level 0 group allocation, then the cleanup derefences index -1 of the local stack array. Prevent this by checking the loop condition first. Fixes: 7ee988770326 ("timers: Implement the hierarchical pull model") Signed-off-by: Levi Yun <ppbuk5246@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Anna-Maria Behnsen <anna-maria@linutronix.de> Link: https://lore.kernel.org/r/20240506041059.86877-1-ppbuk5246@gmail.com