https://github.com/torvalds/linux
Revision 922b9f86a020258d3ea3bfed27251efaed7a03a3 authored by Michael Ellerman on 20 February 2012, 21:32:30 UTC, committed by Benjamin Herrenschmidt on 22 February 2012, 05:48:49 UTC
In commit 54321242afe ("Disable interrupts early in Program Check"), we
switched from enabling to disabling interrupts in program_check_common.
Whereas ENABLE_INTS leaves r3 untouched, if lockdep is enabled DISABLE_INTS
calls into lockdep code and will clobber r3. That means we pass a bogus
struct pt_regs* into program_check_exception() and all hell breaks loose.
So load our regs pointer into r3 after we call DISABLE_INTS.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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Tip revision: 922b9f86a020258d3ea3bfed27251efaed7a03a3 authored by Michael Ellerman on 20 February 2012, 21:32:30 UTC
powerpc: Fix program check handling when lockdep is enabled
powerpc: Fix program check handling when lockdep is enabled
Tip revision: 922b9f8
| File | Mode | Size |
|---|---|---|
| Documentation | ||
| arch | ||
| block | ||
| crypto | ||
| drivers | ||
| firmware | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
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