From: "Randy.Dunlap" <rddunlap@osdl.org>
To: Rik van Riel <riel@redhat.com>
Cc: akpm@osdl.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] increase mlock limit to 32k
Date: Thu, 5 Aug 2004 08:14:45 -0700 [thread overview]
Message-ID: <20040805081445.1c4b085e.rddunlap@osdl.org> (raw)
In-Reply-To: <Pine.LNX.4.44.0408050005380.25023-100000@dhcp83-102.boston.redhat.com>
On Thu, 5 Aug 2004 00:08:33 -0400 (EDT) Rik van Riel wrote:
| Since various gnupg users have indicated that gpg wants to mlock
| 32kB of memory, I created the patch below that increases the
| default mlock ulimit to 32kB.
|
| This is no security problem because it's trivial for processes
| to lock way more memory than this in page tables, network buffers,
| etc. In fact, since this patch allows gnupg to mlock to prevent
| passphrase data from being swapped out, the security people will
| probably like it ;)
|
| Signed-off-by: Rik van Riel <riel@redhat.com>
|
|
| --- linux-2.6.7/include/asm-ppc64/resource.h.mlock 2004-08-04 07:46:42.000000000 -0400
| +++ linux-2.6.7/include/asm-ppc64/resource.h 2004-08-04 07:47:06.000000000 -0400
| @@ -45,7 +45,7 @@
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { 0, 0 }, \
| { INR_OPEN, INR_OPEN }, \
| - { PAGE_SIZE, PAGE_SIZE }, \
| + { 32768, 32768 }, \
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { MAX_SIGPENDING, MAX_SIGPENDING }, \
| --- linux-2.6.7/include/asm-m68k/resource.h.mlock 2004-08-04 07:46:42.000000000 -0400
| +++ linux-2.6.7/include/asm-m68k/resource.h 2004-08-04 07:47:06.000000000 -0400
| @@ -39,7 +39,7 @@
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { 0, 0 }, \
| { INR_OPEN, INR_OPEN }, \
| - { PAGE_SIZE, PAGE_SIZE }, \
| + { 32768, 32768 }, \
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { MAX_SIGPENDING, MAX_SIGPENDING }, \
| --- linux-2.6.7/include/asm-parisc/resource.h.mlock 2004-08-04 07:46:42.000000000 -0400
| +++ linux-2.6.7/include/asm-parisc/resource.h 2004-08-04 07:47:06.000000000 -0400
| @@ -39,7 +39,7 @@
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { 0, 0 }, \
| { INR_OPEN, INR_OPEN }, \
| - { PAGE_SIZE, PAGE_SIZE }, \
| + { 32768, 32768 }, \
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { MAX_SIGPENDING, MAX_SIGPENDING }, \
| --- linux-2.6.7/include/asm-ppc/resource.h.mlock 2004-08-04 07:46:42.000000000 -0400
| +++ linux-2.6.7/include/asm-ppc/resource.h 2004-08-04 07:47:06.000000000 -0400
| @@ -36,7 +36,7 @@
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { 0, 0 }, \
| { INR_OPEN, INR_OPEN }, \
| - { PAGE_SIZE, PAGE_SIZE }, \
| + { 32768, 32768 }, \
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { MAX_SIGPENDING, MAX_SIGPENDING }, \
| --- linux-2.6.7/include/asm-x86_64/resource.h.mlock 2004-08-04 07:46:43.000000000 -0400
| +++ linux-2.6.7/include/asm-x86_64/resource.h 2004-08-04 07:47:06.000000000 -0400
| @@ -39,7 +39,7 @@
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { 0, 0 }, \
| { INR_OPEN, INR_OPEN }, \
| - { PAGE_SIZE , PAGE_SIZE }, \
| + { 32768 , 32768 }, \
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { MAX_SIGPENDING, MAX_SIGPENDING }, \
| --- linux-2.6.7/include/asm-ia64/resource.h.mlock 2004-08-04 07:46:42.000000000 -0400
| +++ linux-2.6.7/include/asm-ia64/resource.h 2004-08-04 07:47:06.000000000 -0400
| @@ -46,7 +46,7 @@
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { 0, 0 }, \
| { INR_OPEN, INR_OPEN }, \
| - { PAGE_SIZE, PAGE_SIZE }, \
| + { 32768, 32768 }, \
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { MAX_SIGPENDING, MAX_SIGPENDING }, \
| --- linux-2.6.7/include/asm-arm/resource.h.mlock 2004-08-04 07:46:41.000000000 -0400
| +++ linux-2.6.7/include/asm-arm/resource.h 2004-08-04 07:47:06.000000000 -0400
| @@ -39,7 +39,7 @@
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { 0, 0 }, \
| { INR_OPEN, INR_OPEN }, \
| - { PAGE_SIZE, PAGE_SIZE }, \
| + { 32768, 32768 }, \
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { MAX_SIGPENDING, MAX_SIGPENDING}, \
| --- linux-2.6.7/include/asm-sparc/resource.h.mlock 2004-08-04 07:46:43.000000000 -0400
| +++ linux-2.6.7/include/asm-sparc/resource.h 2004-08-04 07:47:06.000000000 -0400
| @@ -44,7 +44,7 @@
| { 0, RLIM_INFINITY}, \
| {RLIM_INFINITY, RLIM_INFINITY}, \
| {INR_OPEN, INR_OPEN}, {0, 0}, \
| - {PAGE_SIZE, PAGE_SIZE}, \
| + { 32768, 32768}, \
| {RLIM_INFINITY, RLIM_INFINITY}, \
| {RLIM_INFINITY, RLIM_INFINITY}, \
| {MAX_SIGPENDING, MAX_SIGPENDING}, \
| --- linux-2.6.7/include/asm-alpha/resource.h.mlock 2004-08-04 07:46:41.000000000 -0400
| +++ linux-2.6.7/include/asm-alpha/resource.h 2004-08-04 07:47:06.000000000 -0400
| @@ -41,7 +41,7 @@
| {INR_OPEN, INR_OPEN}, /* RLIMIT_NOFILE */ \
| {LONG_MAX, LONG_MAX}, /* RLIMIT_AS */ \
| {LONG_MAX, LONG_MAX}, /* RLIMIT_NPROC */ \
| - {PAGE_SIZE, PAGE_SIZE}, /* RLIMIT_MEMLOCK */ \
| + { 32768, 32768}, /* RLIMIT_MEMLOCK */ \
| {LONG_MAX, LONG_MAX}, /* RLIMIT_LOCKS */ \
| {MAX_SIGPENDING, MAX_SIGPENDING}, /* RLIMIT_SIGPENDING */ \
| {MQ_BYTES_MAX, MQ_BYTES_MAX}, /* RLIMIT_MSGQUEUE */ \
| --- linux-2.6.7/include/asm-h8300/resource.h.mlock 2004-08-04 07:46:41.000000000 -0400
| +++ linux-2.6.7/include/asm-h8300/resource.h 2004-08-04 07:47:06.000000000 -0400
| @@ -39,7 +39,7 @@
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { 0, 0 }, \
| { INR_OPEN, INR_OPEN }, \
| - { PAGE_SIZE, PAGE_SIZE }, \
| + { 32768, 32768 }, \
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { MAX_SIGPENDING, MAX_SIGPENDING }, \
| --- linux-2.6.7/include/asm-i386/resource.h.mlock 2004-08-04 07:46:42.000000000 -0400
| +++ linux-2.6.7/include/asm-i386/resource.h 2004-08-04 07:47:06.000000000 -0400
| @@ -40,7 +40,7 @@
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { 0, 0 }, \
| { INR_OPEN, INR_OPEN }, \
| - { PAGE_SIZE, PAGE_SIZE }, \
| + { 32768, 32768 }, \
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { MAX_SIGPENDING, MAX_SIGPENDING }, \
| --- linux-2.6.7/include/asm-s390/resource.h.mlock 2004-08-04 07:46:42.000000000 -0400
| +++ linux-2.6.7/include/asm-s390/resource.h 2004-08-04 07:47:06.000000000 -0400
| @@ -47,7 +47,7 @@
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { 0, 0 }, \
| { INR_OPEN, INR_OPEN }, \
| - { PAGE_SIZE, PAGE_SIZE }, \
| + { 32768, 32768 }, \
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { MAX_SIGPENDING, MAX_SIGPENDING }, \
| --- linux-2.6.7/include/asm-cris/resource.h.mlock 2004-08-04 07:46:41.000000000 -0400
| +++ linux-2.6.7/include/asm-cris/resource.h 2004-08-04 07:47:06.000000000 -0400
| @@ -39,7 +39,7 @@
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { 0, 0 }, \
| { INR_OPEN, INR_OPEN }, \
| - { PAGE_SIZE, PAGE_SIZE }, \
| + { 32768, 32768 }, \
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { MAX_SIGPENDING, MAX_SIGPENDING }, \
| --- linux-2.6.7/include/asm-sparc64/resource.h.mlock 2004-08-04 07:46:43.000000000 -0400
| +++ linux-2.6.7/include/asm-sparc64/resource.h 2004-08-04 07:47:06.000000000 -0400
| @@ -43,7 +43,7 @@
| { 0, RLIM_INFINITY}, \
| {RLIM_INFINITY, RLIM_INFINITY}, \
| {INR_OPEN, INR_OPEN}, {0, 0}, \
| - {PAGE_SIZE, PAGE_SIZE }, \
| + { 32768, 32768 }, \
| {RLIM_INFINITY, RLIM_INFINITY}, \
| {RLIM_INFINITY, RLIM_INFINITY}, \
| {MAX_SIGPENDING, MAX_SIGPENDING}, \
| --- linux-2.6.7/include/asm-arm26/resource.h.mlock 2004-08-04 07:46:41.000000000 -0400
| +++ linux-2.6.7/include/asm-arm26/resource.h 2004-08-04 07:47:06.000000000 -0400
| @@ -39,7 +39,7 @@
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { 0, 0 }, \
| { INR_OPEN, INR_OPEN }, \
| - { PAGE_SIZE, PAGE_SIZE }, \
| + { 32768, 32768 }, \
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { MAX_SIGPENDING, MAX_SIGPENDING}, \
| --- linux-2.6.7/include/asm-v850/resource.h.mlock 2004-08-04 07:46:43.000000000 -0400
| +++ linux-2.6.7/include/asm-v850/resource.h 2004-08-04 07:47:06.000000000 -0400
| @@ -39,7 +39,7 @@
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { 0, 0 }, \
| { INR_OPEN, INR_OPEN }, \
| - { PAGE_SIZE, PAGE_SIZE }, \
| + { 32768, 32768 }, \
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { MAX_SIGPENDING, MAX_SIGPENDING }, \
| --- linux-2.6.7/include/asm-sh/resource.h.mlock 2004-08-04 07:46:43.000000000 -0400
| +++ linux-2.6.7/include/asm-sh/resource.h 2004-08-04 07:47:06.000000000 -0400
| @@ -39,7 +39,7 @@
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { 0, 0 }, \
| { INR_OPEN, INR_OPEN }, \
| - { PAGE_SIZE, PAGE_SIZE }, \
| + { 32768, 32768 }, \
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { RLIM_INFINITY, RLIM_INFINITY }, \
| { MAX_SIGPENDING, MAX_SIGPENDING }, \
|
| -
Please s/32768/MLOCK_LIMIT/g (above)
and use:
#define MLOCK_LIMIT 32768
--
~Randy
next prev parent reply other threads:[~2004-08-05 15:36 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-05 4:08 Rik van Riel
2004-08-05 15:14 ` Randy.Dunlap [this message]
2004-08-05 15:42 ` Rik van Riel
2004-08-05 17:29 ` Andrew Morton
2004-08-05 17:39 ` Rik van Riel
2004-08-05 17:52 ` Rik van Riel
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