[PATCH] uml: make mconsole version requests happen in a process (2d77f6fc) · Commits · 戴 / test

Handling a host mconsole version request must be done in a process context rather than interrupt context now that utsname information can be process-specific rather than global. Signed-off-by:

Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by:

Andrew Morton <akpm@osdl.org> Signed-off-by:

Linus Torvalds <torvalds@osdl.org>

arch/um/drivers/mconsole_user.c

+6 −1

Original line number	Diff line number	Diff line
		@@ -18,7 +18,12 @@
		#include "umid.h"

		static struct mconsole_command commands[] = {
		{ "version", mconsole_version, MCONSOLE_INTR },
		/* With uts namespaces, uts information becomes process-specific, so
		* we need a process context. If we try handling this in interrupt
		* context, we may hit an exiting process without a valid uts
		* namespace.
		*/
		{ "version", mconsole_version, MCONSOLE_PROC },
		{ "halt", mconsole_halt, MCONSOLE_PROC },
		{ "reboot", mconsole_reboot, MCONSOLE_PROC },
		{ "config", mconsole_config, MCONSOLE_PROC },

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