Merge branch 'akpm' (Fixes from Andrew)
Merge misc fixes from Andrew Morton: "Seven fixes" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (7 patches) lib/dma-debug.c: fix __hash_bucket_find() mm: compaction: correct the nr_strict va isolated check for CMA firmware/memmap: avoid type conflicts with the generic memmap_init() pidns: remove recursion from free_pid_ns() drivers/video/backlight/lm3639_bl.c: return proper error in lm3639_bled_mode_store() error paths kernel/sys.c: fix stack memory content leak via UNAME26 linux/coredump.h needs asm/siginfo.h
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commit
4a1f2b0fba
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@ -237,7 +237,7 @@ static ssize_t memmap_attr_show(struct kobject *kobj,
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* firmware_map_add() or firmware_map_add_early() afterwards, the entries
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* are not added to sysfs.
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*/
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static int __init memmap_init(void)
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static int __init firmware_memmap_init(void)
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{
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struct firmware_map_entry *entry;
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@ -246,5 +246,5 @@ static int __init memmap_init(void)
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return 0;
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}
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late_initcall(memmap_init);
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late_initcall(firmware_memmap_init);
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@ -206,11 +206,11 @@ static ssize_t lm3639_bled_mode_store(struct device *dev,
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out:
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dev_err(pchip->dev, "%s:i2c access fail to register\n", __func__);
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return size;
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return ret;
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out_input:
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dev_err(pchip->dev, "%s:input conversion fail\n", __func__);
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return size;
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return ret;
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}
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@ -4,6 +4,7 @@
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#include <linux/types.h>
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#include <linux/mm.h>
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#include <linux/fs.h>
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#include <asm/siginfo.h>
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/*
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* These are the only things you should do on a core-file: use only these
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@ -47,15 +47,9 @@ static inline struct pid_namespace *get_pid_ns(struct pid_namespace *ns)
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}
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extern struct pid_namespace *copy_pid_ns(unsigned long flags, struct pid_namespace *ns);
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extern void free_pid_ns(struct kref *kref);
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extern void zap_pid_ns_processes(struct pid_namespace *pid_ns);
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extern int reboot_pid_ns(struct pid_namespace *pid_ns, int cmd);
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static inline void put_pid_ns(struct pid_namespace *ns)
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{
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if (ns != &init_pid_ns)
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kref_put(&ns->kref, free_pid_ns);
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}
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extern void put_pid_ns(struct pid_namespace *ns);
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#else /* !CONFIG_PID_NS */
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#include <linux/err.h>
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@ -133,19 +133,26 @@ struct pid_namespace *copy_pid_ns(unsigned long flags, struct pid_namespace *old
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return create_pid_namespace(old_ns);
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}
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void free_pid_ns(struct kref *kref)
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static void free_pid_ns(struct kref *kref)
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{
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struct pid_namespace *ns, *parent;
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struct pid_namespace *ns;
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ns = container_of(kref, struct pid_namespace, kref);
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parent = ns->parent;
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destroy_pid_namespace(ns);
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if (parent != NULL)
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put_pid_ns(parent);
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}
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EXPORT_SYMBOL_GPL(free_pid_ns);
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void put_pid_ns(struct pid_namespace *ns)
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{
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struct pid_namespace *parent;
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while (ns != &init_pid_ns) {
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parent = ns->parent;
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if (!kref_put(&ns->kref, free_pid_ns))
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break;
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ns = parent;
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}
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}
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EXPORT_SYMBOL_GPL(put_pid_ns);
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void zap_pid_ns_processes(struct pid_namespace *pid_ns)
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{
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12
kernel/sys.c
12
kernel/sys.c
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@ -1265,15 +1265,16 @@ DECLARE_RWSEM(uts_sem);
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* Work around broken programs that cannot handle "Linux 3.0".
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* Instead we map 3.x to 2.6.40+x, so e.g. 3.0 would be 2.6.40
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*/
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static int override_release(char __user *release, int len)
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static int override_release(char __user *release, size_t len)
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{
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int ret = 0;
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char buf[65];
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if (current->personality & UNAME26) {
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char *rest = UTS_RELEASE;
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const char *rest = UTS_RELEASE;
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char buf[65] = { 0 };
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int ndots = 0;
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unsigned v;
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size_t copy;
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while (*rest) {
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if (*rest == '.' && ++ndots >= 3)
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@ -1283,8 +1284,9 @@ static int override_release(char __user *release, int len)
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rest++;
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}
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v = ((LINUX_VERSION_CODE >> 8) & 0xff) + 40;
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snprintf(buf, len, "2.6.%u%s", v, rest);
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ret = copy_to_user(release, buf, len);
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copy = min(sizeof(buf), max_t(size_t, 1, len));
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copy = scnprintf(buf, copy, "2.6.%u%s", v, rest);
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ret = copy_to_user(release, buf, copy + 1);
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}
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return ret;
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}
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@ -264,7 +264,7 @@ static struct dma_debug_entry *__hash_bucket_find(struct hash_bucket *bucket,
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match_fn match)
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{
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struct dma_debug_entry *entry, *ret = NULL;
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int matches = 0, match_lvl, last_lvl = 0;
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int matches = 0, match_lvl, last_lvl = -1;
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list_for_each_entry(entry, &bucket->list, list) {
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if (!match(ref, entry))
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@ -293,7 +293,7 @@ static struct dma_debug_entry *__hash_bucket_find(struct hash_bucket *bucket,
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} else if (match_lvl > last_lvl) {
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/*
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* We found an entry that fits better then the
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* previous one
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* previous one or it is the 1st match.
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*/
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last_lvl = match_lvl;
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ret = entry;
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@ -346,7 +346,7 @@ static unsigned long isolate_freepages_block(struct compact_control *cc,
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* pages requested were isolated. If there were any failures, 0 is
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* returned and CMA will fail.
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*/
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if (strict && nr_strict_required != total_isolated)
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if (strict && nr_strict_required > total_isolated)
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total_isolated = 0;
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if (locked)
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