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s390/unwind: stop gracefully at user mode pt_regs in irq stack
authorVasily Gorbik <gor@linux.ibm.com>
Wed, 11 Dec 2019 16:27:31 +0000 (17:27 +0100)
committerVasily Gorbik <gor@linux.ibm.com>
Wed, 18 Dec 2019 22:29:26 +0000 (23:29 +0100)
commiteef06cbf670aaa2ccb56c9a7b84042acd657aa5d
treed7ec3302b9c80e67babb6e27dddc79b28b1508c5
parentc23587c92f6e3260fe3b82bb75b38aa2553b9468
s390/unwind: stop gracefully at user mode pt_regs in irq stack

Consider reaching user mode pt_regs at the bottom of irq stack graceful
unwinder termination. This is the case when irq/mcck/ext interrupt arrives
while in user mode.

Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
arch/s390/kernel/unwind_bc.c