The patch titled
uml: make mconsole version requests happen in a process
has been added to the -mm tree. Its filename is
uml-make-mconsole-version-requests-happen-in-a-process.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: uml: make mconsole version requests happen in a process
From: Jeff Dike <jdike@xxxxxxxxxxx>
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@xxxxxxxxxxx>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
arch/um/drivers/mconsole_user.c | 7 ++++++-
1 files changed, 6 insertions(+), 1 deletion(-)
diff -puN arch/um/drivers/mconsole_user.c~uml-make-mconsole-version-requests-happen-in-a-process arch/um/drivers/mconsole_user.c
--- a/arch/um/drivers/mconsole_user.c~uml-make-mconsole-version-requests-happen-in-a-process
+++ a/arch/um/drivers/mconsole_user.c
@@ -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 },
_
Patches currently in -mm which might be from jdike@xxxxxxxxxxx are
uml-clean-up-address-space-limits-code.patch
uml-timer-initialization-cleanup.patch
uml-remove-some-useless-exports.patch
uml-fix-static-binary-segfault.patch
uml-remove-useless-declaration.patch
uml-signal-initialization-cleanup.patch
uml-timer-handler-tidying.patch
uml-ifdef-a-mode-specific-function.patch
uml-mark-forward_interrupts-as-being-mode-specific.patch
uml-remove-spinlock-wrapper-functions.patch
uml-remove-os_isatty.patch
uml-fix-exitcall-ordering-bug.patch
uml-make-some-symbols-static.patch
uml-remove-syscall-debugging.patch
uml-move-_kernc-files.patch
uml-formatting-fixes.patch
uml-add-some-eintr-protection.patch
uml-remove-unused-variable.patch
uml-make-mconsole-version-requests-happen-in-a-process.patch
uml-remove-pte_mkexec.patch
-
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