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authorRussell King <>2017-11-24 23:49:34 +0000
committerRussell King <>2017-11-26 15:41:39 +0000
commit8bafae202c82dc257f649ea3c275a0f35ee15113 (patch)
tree1c2a7d64f216df552e4509dc746d8da3436e39ab /Makefile
parent400eeffaffc7232c0ae1134fe04e14ae4fb48d8c (diff)
ARM: BUG if jumping to usermode address in kernel mode
Detect if we are returning to usermode via the normal kernel exit paths but the saved PSR value indicates that we are in kernel mode. This could occur due to corrupted stack state, which has been observed with "ftracetest". This ensures that we catch the problem case before we get to user code. Signed-off-by: Russell King <>
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