MIPS: Stack unwinding while on IRQ stack
authorMatt Redfearn <matt.redfearn@imgtec.com>
Mon, 19 Dec 2016 14:20:57 +0000 (14:20 +0000)
committerRalf Baechle <ralf@linux-mips.org>
Tue, 3 Jan 2017 15:34:34 +0000 (16:34 +0100)
commitd42d8d106b0275b027c1e8992c42aecf933436ea
treecf5b3f4a09288a5d2a941a19458bb159cbada948
parentfe8bd18ffea5327344d4ec2bf11f47951212abd0
MIPS: Stack unwinding while on IRQ stack

Within unwind stack, check if the stack pointer being unwound is within
the CPU's irq_stack and if so use that page rather than the task's stack
page.

Signed-off-by: Matt Redfearn <matt.redfearn@imgtec.com>
Acked-by: Jason A. Donenfeld <jason@zx2c4.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Adam Buchbinder <adam.buchbinder@gmail.com>
Cc: Maciej W. Rozycki <macro@imgtec.com>
Cc: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
Cc: Chris Metcalf <cmetcalf@mellanox.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14741/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
arch/mips/kernel/process.c