summaryrefslogtreecommitdiffstats
path: root/kernel
diff options
context:
space:
mode:
Diffstat (limited to 'kernel')
-rw-r--r--kernel/kexec.c1
-rw-r--r--kernel/resource.c50
-rw-r--r--kernel/signal.c3
-rw-r--r--kernel/sys.c3
-rw-r--r--kernel/sysctl.c12
-rw-r--r--kernel/taskstats.c1
-rw-r--r--kernel/trace/trace.c8
-rw-r--r--kernel/trace/trace_functions.c15
8 files changed, 56 insertions, 37 deletions
diff --git a/kernel/kexec.c b/kernel/kexec.c
index 0668d58d641..5e4bd7864c5 100644
--- a/kernel/kexec.c
+++ b/kernel/kexec.c
@@ -21,7 +21,6 @@
#include <linux/hardirq.h>
#include <linux/elf.h>
#include <linux/elfcore.h>
-#include <generated/utsrelease.h>
#include <linux/utsname.h>
#include <linux/numa.h>
#include <linux/suspend.h>
diff --git a/kernel/resource.c b/kernel/resource.c
index 34d45886ee8..73f35d4b30b 100644
--- a/kernel/resource.c
+++ b/kernel/resource.c
@@ -763,6 +763,7 @@ static void __init __reserve_region_with_split(struct resource *root,
struct resource *parent = root;
struct resource *conflict;
struct resource *res = kzalloc(sizeof(*res), GFP_ATOMIC);
+ struct resource *next_res = NULL;
if (!res)
return;
@@ -772,21 +773,46 @@ static void __init __reserve_region_with_split(struct resource *root,
res->end = end;
res->flags = IORESOURCE_BUSY;
- conflict = __request_resource(parent, res);
- if (!conflict)
- return;
+ while (1) {
- /* failed, split and try again */
- kfree(res);
+ conflict = __request_resource(parent, res);
+ if (!conflict) {
+ if (!next_res)
+ break;
+ res = next_res;
+ next_res = NULL;
+ continue;
+ }
- /* conflict covered whole area */
- if (conflict->start <= start && conflict->end >= end)
- return;
+ /* conflict covered whole area */
+ if (conflict->start <= res->start &&
+ conflict->end >= res->end) {
+ kfree(res);
+ WARN_ON(next_res);
+ break;
+ }
+
+ /* failed, split and try again */
+ if (conflict->start > res->start) {
+ end = res->end;
+ res->end = conflict->start - 1;
+ if (conflict->end < end) {
+ next_res = kzalloc(sizeof(*next_res),
+ GFP_ATOMIC);
+ if (!next_res) {
+ kfree(res);
+ break;
+ }
+ next_res->name = name;
+ next_res->start = conflict->end + 1;
+ next_res->end = end;
+ next_res->flags = IORESOURCE_BUSY;
+ }
+ } else {
+ res->start = conflict->end + 1;
+ }
+ }
- if (conflict->start > start)
- __reserve_region_with_split(root, start, conflict->start-1, name);
- if (conflict->end < end)
- __reserve_region_with_split(root, conflict->end+1, end, name);
}
void __init reserve_region_with_split(struct resource *root,
diff --git a/kernel/signal.c b/kernel/signal.c
index 2c681f11b7d..0af8868525d 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -17,6 +17,7 @@
#include <linux/fs.h>
#include <linux/tty.h>
#include <linux/binfmts.h>
+#include <linux/coredump.h>
#include <linux/security.h>
#include <linux/syscalls.h>
#include <linux/ptrace.h>
@@ -2359,7 +2360,7 @@ relock:
* first and our do_group_exit call below will use
* that value and ignore the one we pass it.
*/
- do_coredump(info->si_signo, info->si_signo, regs);
+ do_coredump(info, regs);
}
/*
diff --git a/kernel/sys.c b/kernel/sys.c
index f9492284e5d..c5cb5b99cb8 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -368,6 +368,7 @@ EXPORT_SYMBOL(unregister_reboot_notifier);
void kernel_restart(char *cmd)
{
kernel_restart_prepare(cmd);
+ disable_nonboot_cpus();
if (!cmd)
printk(KERN_EMERG "Restarting system.\n");
else
@@ -2204,7 +2205,7 @@ static int __orderly_poweroff(void)
return -ENOMEM;
}
- ret = call_usermodehelper_fns(argv[0], argv, envp, UMH_NO_WAIT,
+ ret = call_usermodehelper_fns(argv[0], argv, envp, UMH_WAIT_EXEC,
NULL, argv_cleanup, NULL);
if (ret == -ENOMEM)
argv_free(argv);
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 84c76a34e41..c2a2f8084ba 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -97,10 +97,12 @@
extern int sysctl_overcommit_memory;
extern int sysctl_overcommit_ratio;
extern int max_threads;
-extern int core_uses_pid;
extern int suid_dumpable;
+#ifdef CONFIG_COREDUMP
+extern int core_uses_pid;
extern char core_pattern[];
extern unsigned int core_pipe_limit;
+#endif
extern int pid_max;
extern int min_free_kbytes;
extern int pid_max_min, pid_max_max;
@@ -177,8 +179,10 @@ static int proc_dointvec_minmax_sysadmin(struct ctl_table *table, int write,
static int proc_dointvec_minmax_coredump(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos);
+#ifdef CONFIG_COREDUMP
static int proc_dostring_coredump(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos);
+#endif
#ifdef CONFIG_MAGIC_SYSRQ
/* Note: sysrq code uses it's own private copy */
@@ -404,6 +408,7 @@ static struct ctl_table kern_table[] = {
.mode = 0644,
.proc_handler = proc_dointvec,
},
+#ifdef CONFIG_COREDUMP
{
.procname = "core_uses_pid",
.data = &core_uses_pid,
@@ -425,6 +430,7 @@ static struct ctl_table kern_table[] = {
.mode = 0644,
.proc_handler = proc_dointvec,
},
+#endif
#ifdef CONFIG_PROC_SYSCTL
{
.procname = "tainted",
@@ -2036,12 +2042,14 @@ int proc_dointvec_minmax(struct ctl_table *table, int write,
static void validate_coredump_safety(void)
{
+#ifdef CONFIG_COREDUMP
if (suid_dumpable == SUID_DUMPABLE_SAFE &&
core_pattern[0] != '/' && core_pattern[0] != '|') {
printk(KERN_WARNING "Unsafe core_pattern used with "\
"suid_dumpable=2. Pipe handler or fully qualified "\
"core dump path required.\n");
}
+#endif
}
static int proc_dointvec_minmax_coredump(struct ctl_table *table, int write,
@@ -2053,6 +2061,7 @@ static int proc_dointvec_minmax_coredump(struct ctl_table *table, int write,
return error;
}
+#ifdef CONFIG_COREDUMP
static int proc_dostring_coredump(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
{
@@ -2061,6 +2070,7 @@ static int proc_dostring_coredump(struct ctl_table *table, int write,
validate_coredump_safety();
return error;
}
+#endif
static int __do_proc_doulongvec_minmax(void *data, struct ctl_table *table, int write,
void __user *buffer,
diff --git a/kernel/taskstats.c b/kernel/taskstats.c
index 610f0838d55..145bb4d3bd4 100644
--- a/kernel/taskstats.c
+++ b/kernel/taskstats.c
@@ -445,6 +445,7 @@ static int cgroupstats_user_cmd(struct sk_buff *skb, struct genl_info *info)
na = nla_reserve(rep_skb, CGROUPSTATS_TYPE_CGROUP_STATS,
sizeof(struct cgroupstats));
if (na == NULL) {
+ nlmsg_free(rep_skb);
rc = -EMSGSIZE;
goto err;
}
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index cdcb59450b4..31e4f55773f 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -4200,12 +4200,6 @@ static void buffer_pipe_buf_release(struct pipe_inode_info *pipe,
buf->private = 0;
}
-static int buffer_pipe_buf_steal(struct pipe_inode_info *pipe,
- struct pipe_buffer *buf)
-{
- return 1;
-}
-
static void buffer_pipe_buf_get(struct pipe_inode_info *pipe,
struct pipe_buffer *buf)
{
@@ -4221,7 +4215,7 @@ static const struct pipe_buf_operations buffer_pipe_buf_ops = {
.unmap = generic_pipe_buf_unmap,
.confirm = generic_pipe_buf_confirm,
.release = buffer_pipe_buf_release,
- .steal = buffer_pipe_buf_steal,
+ .steal = generic_pipe_buf_steal,
.get = buffer_pipe_buf_get,
};
diff --git a/kernel/trace/trace_functions.c b/kernel/trace/trace_functions.c
index 483162a9f90..507a7a9630b 100644
--- a/kernel/trace/trace_functions.c
+++ b/kernel/trace/trace_functions.c
@@ -13,7 +13,6 @@
#include <linux/debugfs.h>
#include <linux/uaccess.h>
#include <linux/ftrace.h>
-#include <linux/pstore.h>
#include <linux/fs.h>
#include "trace.h"
@@ -76,10 +75,9 @@ function_trace_call_preempt_only(unsigned long ip, unsigned long parent_ip,
preempt_enable_notrace();
}
-/* Our two options */
+/* Our option */
enum {
TRACE_FUNC_OPT_STACK = 0x1,
- TRACE_FUNC_OPT_PSTORE = 0x2,
};
static struct tracer_flags func_flags;
@@ -109,12 +107,6 @@ function_trace_call(unsigned long ip, unsigned long parent_ip,
disabled = atomic_inc_return(&data->disabled);
if (likely(disabled == 1)) {
- /*
- * So far tracing doesn't support multiple buffers, so
- * we make an explicit call for now.
- */
- if (unlikely(func_flags.val & TRACE_FUNC_OPT_PSTORE))
- pstore_ftrace_call(ip, parent_ip);
pc = preempt_count();
trace_function(tr, ip, parent_ip, flags, pc);
}
@@ -181,9 +173,6 @@ static struct tracer_opt func_opts[] = {
#ifdef CONFIG_STACKTRACE
{ TRACER_OPT(func_stack_trace, TRACE_FUNC_OPT_STACK) },
#endif
-#ifdef CONFIG_PSTORE_FTRACE
- { TRACER_OPT(func_pstore, TRACE_FUNC_OPT_PSTORE) },
-#endif
{ } /* Always set a last empty entry */
};
@@ -236,8 +225,6 @@ static int func_set_flag(u32 old_flags, u32 bit, int set)
}
break;
- case TRACE_FUNC_OPT_PSTORE:
- break;
default:
return -EINVAL;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-18 15:33:23 +0000