From: Hemmo Nieminen Date: Thu, 15 Jan 2015 21:01:59 +0000 (+0200) Subject: MIPS: Fix kernel lockup or crash after CPU offline/online X-Git-Tag: fixes-v4.0-rc1~199^2~8 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c7754e75100ed5e3068ac5085747f2bfc386c8d6;p=pandora-kernel.git 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 Signed-off-by: Aaro Koskinen Cc: stable@vger.kernel.org Cc: David Daney Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/8953/ Signed-off-by: Ralf Baechle --- Reading git-diff-tree failed