The patch titled Subject: mqueue: revert bump up DFLT_*MAX has been removed from the -mm tree. Its filename was mqueue-revert-bump-up-dflt_max.patch This patch was dropped because it was merged into mainline or a subsystem tree The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ From: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx> Subject: mqueue: revert bump up DFLT_*MAX Mqueue limitation is slightly naieve parameter likes other ipcs because unprivileged user can consume kernel memory by using ipcs. Thus, too aggressive raise bring us security issue. Example, current setting allow evil unprivileged user use 256GB (= 256 * 1024 * 1024*1024) and it's enough large to system will belome unresponsive. Don't do that. Instead, every admin should adjust the knobs for their own systems. Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx> Acked-by: Doug Ledford <dledford@xxxxxxxxxx> Acked-by: Joe Korty <joe.korty@xxxxxxxx> Cc: Amerigo Wang <amwang@xxxxxxxxxx> Acked-by: Serge E. Hallyn <serue@xxxxxxxxxx> Cc: Jiri Slaby <jslaby@xxxxxxx> Cc: Manfred Spraul <manfred@xxxxxxxxxxxxxxxx> Cc: Dave Hansen <haveblue@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- include/linux/ipc_namespace.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff -puN include/linux/ipc_namespace.h~mqueue-revert-bump-up-dflt_max include/linux/ipc_namespace.h --- a/include/linux/ipc_namespace.h~mqueue-revert-bump-up-dflt_max +++ a/include/linux/ipc_namespace.h @@ -118,12 +118,12 @@ extern int mq_init_ns(struct ipc_namespa #define DFLT_QUEUESMAX 256 #define HARD_QUEUESMAX 1024 #define MIN_MSGMAX 1 -#define DFLT_MSG 64U -#define DFLT_MSGMAX 1024 +#define DFLT_MSG 10U +#define DFLT_MSGMAX 10 #define HARD_MSGMAX 65536 #define MIN_MSGSIZEMAX 128 #define DFLT_MSGSIZE 8192U -#define DFLT_MSGSIZEMAX (1024*1024) +#define DFLT_MSGSIZEMAX 8192 #define HARD_MSGSIZEMAX (16*1024*1024) #else static inline int mq_init_ns(struct ipc_namespace *ns) { return 0; } _ Patches currently in -mm which might be from kosaki.motohiro@xxxxxxxxxxxxxx are origin.patch mqueue-dont-use-kmalloc-with-kmalloc_max_size.patch mqueue-separate-mqueue-default-value-from-maximum-value-v2.patch selftests-add-mq_open_tests.patch ipc-mqueue-improve-performance-of-send-recv.patch ipc-mqueue-correct-mq_attr_ok-test.patch ipc-mqueue-strengthen-checks-on-mqueue-creation.patch tools-selftests-add-mq_perf_tests.patch ipc-mqueue-add-rbtree-node-caching-support.patch c-r-prctl-add-ability-to-set-new-mm_struct-exe_file.patch c-r-prctl-add-ability-to-set-new-mm_struct-exe_file-update-after-mm-num_exe_file_vmas-removal.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html