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authorHemmo Nieminen <[email protected]>2015-01-15 23:01:59 +0200
committerRalf Baechle <[email protected]>2015-01-29 23:54:07 +0100
commitc7754e75100ed5e3068ac5085747f2bfc386c8d6 (patch)
treeefafb43133dd499625f9055aa3b586603f086c68 /tools/perf/scripts/python/stackcollapse.py
parent63a87fe0d0de2ce126a8cec9a299a133cfd5658e (diff)
MIPS: Fix kernel lockup or crash after CPU offline/online
As printk() invocation can cause e.g. a TLB miss, printk() cannot be called before the exception handlers have been properly initialized. This can happen e.g. when netconsole has been loaded as a kernel module and the TLB table has been cleared when a CPU was offline. Call cpu_report() in start_secondary() only after the exception handlers have been initialized to fix this. Without the patch the kernel will randomly either lockup or crash after a CPU is onlined and the console driver is a module. Signed-off-by: Hemmo Nieminen <[email protected]> Signed-off-by: Aaro Koskinen <[email protected]> Cc: [email protected] Cc: David Daney <[email protected]> Cc: [email protected] Cc: [email protected] Patchwork: https://patchwork.linux-mips.org/patch/8953/ Signed-off-by: Ralf Baechle <[email protected]>
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