Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/kernel/debug/kdb/Makefile b/kernel/debug/kdb/Makefile
index d4fc58f..efac857 100644
--- a/kernel/debug/kdb/Makefile
+++ b/kernel/debug/kdb/Makefile
@@ -6,7 +6,6 @@
# Copyright (c) 2009 Wind River Systems, Inc. All Rights Reserved.
#
-CCVERSION := $(shell $(CC) -v 2>&1 | sed -ne '$$p')
obj-y := kdb_io.o kdb_main.o kdb_support.o kdb_bt.o gen-kdb_cmds.o kdb_bp.o kdb_debugger.o
obj-$(CONFIG_KDB_KEYBOARD) += kdb_keyboard.o
diff --git a/kernel/debug/kdb/kdb_bt.c b/kernel/debug/kdb/kdb_bt.c
index 7921ae4..7e2379a 100644
--- a/kernel/debug/kdb/kdb_bt.c
+++ b/kernel/debug/kdb/kdb_bt.c
@@ -186,7 +186,16 @@
kdb_printf("btc: cpu status: ");
kdb_parse("cpu\n");
for_each_online_cpu(cpu) {
- sprintf(buf, "btt 0x%px\n", KDB_TSK(cpu));
+ void *kdb_tsk = KDB_TSK(cpu);
+
+ /* If a CPU failed to round up we could be here */
+ if (!kdb_tsk) {
+ kdb_printf("WARNING: no task for cpu %ld\n",
+ cpu);
+ continue;
+ }
+
+ sprintf(buf, "btt 0x%px\n", kdb_tsk);
kdb_parse(buf);
touch_nmi_watchdog();
}
diff --git a/kernel/debug/kdb/kdb_debugger.c b/kernel/debug/kdb/kdb_debugger.c
index 15e1a7a..53a0df6 100644
--- a/kernel/debug/kdb/kdb_debugger.c
+++ b/kernel/debug/kdb/kdb_debugger.c
@@ -118,13 +118,6 @@
kdb_bp_remove();
KDB_STATE_CLEAR(DOING_SS);
KDB_STATE_SET(PAGER);
- /* zero out any offline cpu data */
- for_each_present_cpu(i) {
- if (!cpu_online(i)) {
- kgdb_info[i].debuggerinfo = NULL;
- kgdb_info[i].task = NULL;
- }
- }
if (ks->err_code == DIE_OOPS || reason == KDB_REASON_OOPS) {
ks->pass_exception = 1;
KDB_FLAG_SET(CATASTROPHIC);
diff --git a/kernel/debug/kdb/kdb_io.c b/kernel/debug/kdb/kdb_io.c
index 6a4b414..3a5184e 100644
--- a/kernel/debug/kdb/kdb_io.c
+++ b/kernel/debug/kdb/kdb_io.c
@@ -446,7 +446,7 @@
char *kdb_getstr(char *buffer, size_t bufsize, const char *prompt)
{
if (prompt && kdb_prompt_str != prompt)
- strncpy(kdb_prompt_str, prompt, CMD_BUFLEN);
+ strscpy(kdb_prompt_str, prompt, CMD_BUFLEN);
kdb_printf(kdb_prompt_str);
kdb_nextline = 1; /* Prompt and input resets line number */
return kdb_read(buffer, bufsize);
diff --git a/kernel/debug/kdb/kdb_keyboard.c b/kernel/debug/kdb/kdb_keyboard.c
index 118527a..750497b 100644
--- a/kernel/debug/kdb/kdb_keyboard.c
+++ b/kernel/debug/kdb/kdb_keyboard.c
@@ -173,11 +173,11 @@
case KT_LATIN:
if (isprint(keychar))
break; /* printable characters */
- /* drop through */
+ /* fall through */
case KT_SPEC:
if (keychar == K_ENTER)
break;
- /* drop through */
+ /* fall through */
default:
return -1; /* ignore unprintables */
}
diff --git a/kernel/debug/kdb/kdb_main.c b/kernel/debug/kdb/kdb_main.c
index f338d23..4567fe9 100644
--- a/kernel/debug/kdb/kdb_main.c
+++ b/kernel/debug/kdb/kdb_main.c
@@ -658,7 +658,7 @@
*/
struct defcmd_set {
int count;
- int usable;
+ bool usable;
char *name;
char *usage;
char *help;
@@ -666,7 +666,7 @@
};
static struct defcmd_set *defcmd_set;
static int defcmd_set_count;
-static int defcmd_in_progress;
+static bool defcmd_in_progress;
/* Forward references */
static int kdb_exec_defcmd(int argc, const char **argv);
@@ -676,9 +676,9 @@
struct defcmd_set *s = defcmd_set + defcmd_set_count - 1;
char **save_command = s->command;
if (strcmp(argv0, "endefcmd") == 0) {
- defcmd_in_progress = 0;
+ defcmd_in_progress = false;
if (!s->count)
- s->usable = 0;
+ s->usable = false;
if (s->usable)
/* macros are always safe because when executed each
* internal command re-enters kdb_parse() and is
@@ -695,7 +695,7 @@
if (!s->command) {
kdb_printf("Could not allocate new kdb_defcmd table for %s\n",
cmdstr);
- s->usable = 0;
+ s->usable = false;
return KDB_NOTIMP;
}
memcpy(s->command, save_command, s->count * sizeof(*(s->command)));
@@ -737,7 +737,7 @@
defcmd_set_count * sizeof(*defcmd_set));
s = defcmd_set + defcmd_set_count;
memset(s, 0, sizeof(*s));
- s->usable = 1;
+ s->usable = true;
s->name = kdb_strdup(argv[1], GFP_KDB);
if (!s->name)
goto fail_name;
@@ -756,7 +756,7 @@
s->help[strlen(s->help)-1] = '\0';
}
++defcmd_set_count;
- defcmd_in_progress = 1;
+ defcmd_in_progress = true;
kfree(save_defcmd_set);
return 0;
fail_help:
@@ -830,7 +830,7 @@
cp++;
while (isspace(*cp))
cp++;
- if (strncmp(cp, "grep ", 5)) {
+ if (!str_has_prefix(cp, "grep ")) {
kdb_printf("invalid 'pipe', see grephelp\n");
return;
}
@@ -1493,6 +1493,7 @@
char cbuf[32];
char *c = cbuf;
int i;
+ int j;
unsigned long word;
memset(cbuf, '\0', sizeof(cbuf));
@@ -1538,25 +1539,9 @@
wc.word = word;
#define printable_char(c) \
({unsigned char __c = c; isascii(__c) && isprint(__c) ? __c : '.'; })
- switch (bytesperword) {
- case 8:
+ for (j = 0; j < bytesperword; j++)
*c++ = printable_char(*cp++);
- *c++ = printable_char(*cp++);
- *c++ = printable_char(*cp++);
- *c++ = printable_char(*cp++);
- addr += 4;
- case 4:
- *c++ = printable_char(*cp++);
- *c++ = printable_char(*cp++);
- addr += 2;
- case 2:
- *c++ = printable_char(*cp++);
- addr++;
- case 1:
- *c++ = printable_char(*cp++);
- addr++;
- break;
- }
+ addr += bytesperword;
#undef printable_char
}
}
@@ -2537,7 +2522,6 @@
kdb_printf("machine %s\n", init_uts_ns.name.machine);
kdb_printf("nodename %s\n", init_uts_ns.name.nodename);
kdb_printf("domainname %s\n", init_uts_ns.name.domainname);
- kdb_printf("ccversion %s\n", __stringify(CCVERSION));
now = __ktime_get_real_seconds();
time64_to_tm(now, 0, &tm);
@@ -2556,16 +2540,11 @@
}
kdb_printf("%02ld:%02ld\n", val.uptime/(60*60), (val.uptime/60)%60);
- /* lifted from fs/proc/proc_misc.c::loadavg_read_proc() */
-
-#define LOAD_INT(x) ((x) >> FSHIFT)
-#define LOAD_FRAC(x) LOAD_INT(((x) & (FIXED_1-1)) * 100)
kdb_printf("load avg %ld.%02ld %ld.%02ld %ld.%02ld\n",
LOAD_INT(val.loads[0]), LOAD_FRAC(val.loads[0]),
LOAD_INT(val.loads[1]), LOAD_FRAC(val.loads[1]),
LOAD_INT(val.loads[2]), LOAD_FRAC(val.loads[2]));
-#undef LOAD_INT
-#undef LOAD_FRAC
+
/* Display in kilobytes */
#define K(x) ((x) << (PAGE_SHIFT - 10))
kdb_printf("\nMemTotal: %8lu kB\nMemFree: %8lu kB\n"
@@ -2604,7 +2583,7 @@
diag = kdbgetularg(argv[3], &whichcpu);
if (diag)
return diag;
- if (!cpu_online(whichcpu)) {
+ if (whichcpu >= nr_cpu_ids || !cpu_online(whichcpu)) {
kdb_printf("cpu %ld is not online\n", whichcpu);
return KDB_BADCPUNUM;
}
diff --git a/kernel/debug/kdb/kdb_support.c b/kernel/debug/kdb/kdb_support.c
index b14b092..b8e6306 100644
--- a/kernel/debug/kdb/kdb_support.c
+++ b/kernel/debug/kdb/kdb_support.c
@@ -192,7 +192,7 @@
while ((name = kdb_walk_kallsyms(&pos))) {
if (strncmp(name, prefix_name, prefix_len) == 0) {
- strcpy(ks_namebuf, name);
+ strscpy(ks_namebuf, name, sizeof(ks_namebuf));
/* Work out the longest name that matches the prefix */
if (++number == 1) {
prev_len = min_t(int, max_len-1,
@@ -432,7 +432,7 @@
*word = w8;
break;
}
- /* drop through */
+ /* fall through */
default:
diag = KDB_BADWIDTH;
kdb_printf("kdb_getphysword: bad width %ld\n", (long) size);
@@ -481,7 +481,7 @@
*word = w8;
break;
}
- /* drop through */
+ /* fall through */
default:
diag = KDB_BADWIDTH;
kdb_printf("kdb_getword: bad width %ld\n", (long) size);
@@ -525,7 +525,7 @@
diag = kdb_putarea(addr, w8);
break;
}
- /* drop through */
+ /* fall through */
default:
diag = KDB_BADWIDTH;
kdb_printf("kdb_putword: bad width %ld\n", (long) size);