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| author | James Morse <james.morse@arm.com> | 2015-12-10 10:22:40 +0000 |
|---|---|---|
| committer | Jeffrey Vander Stoep <jeffv@google.com> | 2016-09-16 21:33:15 +0000 |
| commit | 4ba051d5a5476288cb27912c90de10aaf7c7f151 (patch) | |
| tree | a6e5a3f64c0193350ea1b1c63017f360a4060d57 /include/linux/workqueue.h | |
| parent | 722e6114950d4dfdf890c045461932c91a4209d7 (diff) | |
UPSTREAM: arm64: when walking onto the task stack, check sp & fp are in current->stack
When unwind_frame() reaches the bottom of the irq_stack, the last fp
points to the original task stack. unwind_frame() uses
IRQ_STACK_TO_TASK_STACK() to find the sp value. If either values is
wrong, we may end up walking a corrupt stack.
Check these values are sane by testing if they are both on the stack
pointed to by current->stack.
Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Bug: 30369029
Patchset: per-cpu-irq-stack
(cherry picked from commit 1ffe199b1c9b72a8e752a9ae2a7af10128ab2ca1)
Signed-off-by: Jeff Vander Stoep <jeffv@google.com>
Change-Id: I2e5bf1ce899a1018f1c5b8ccb4f7c816d61bba21
Diffstat (limited to 'include/linux/workqueue.h')
0 files changed, 0 insertions, 0 deletions