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Merge tag 'v4.9.185' of git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable into odroidn2-4.9.y

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This is the 4.9.185 stable release
This commit is contained in:
Mauro (mdrjr) Ribeiro
2019-07-15 12:29:18 -03:00
parent 9c40f50e1c 9c51e1102c
commit cb41aae90f
119 changed files with 566 additions and 231 deletions
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3
kernel/cpu.c
View File

@@ -2271,6 +2271,9 @@ static int __init mitigations_parse_cmdline(char *arg)
cpu_mitigations = CPU_MITIGATIONS_AUTO;
else if (!strcmp(arg, "auto,nosmt"))
cpu_mitigations = CPU_MITIGATIONS_AUTO_NOSMT;
else
pr_crit("Unsupported mitigations=%s, system may still be vulnerable\n",
arg);
return 0;
}

4
kernel/ptrace.c
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@@ -74,9 +74,7 @@ void __ptrace_link(struct task_struct *child, struct task_struct *new_parent,
*/
static void ptrace_link(struct task_struct *child, struct task_struct *new_parent)
{
rcu_read_lock();
__ptrace_link(child, new_parent, __task_cred(new_parent));
rcu_read_unlock();
__ptrace_link(child, new_parent, current_cred());
}
/**

6
kernel/trace/trace.c
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@@ -7706,12 +7706,8 @@ void ftrace_dump(enum ftrace_dump_mode oops_dump_mode)
cnt++;
/* reset all but tr, trace, and overruns */
memset(&iter.seq, 0,
sizeof(struct trace_iterator) -
offsetof(struct trace_iterator, seq));
trace_iterator_reset(&iter);
iter.iter_flags |= TRACE_FILE_LAT_FMT;
iter.pos = -1;
if (trace_find_next_entry_inc(&iter) != NULL) {
int ret;

18
kernel/trace/trace.h
View File

@@ -1675,4 +1675,22 @@ static inline void trace_event_enum_update(struct trace_enum_map **map, int len)
extern struct trace_iterator *tracepoint_print_iter;
/*
* Reset the state of the trace_iterator so that it can read consumed data.
* Normally, the trace_iterator is used for reading the data when it is not
* consumed, and must retain state.
*/
static __always_inline void trace_iterator_reset(struct trace_iterator *iter)
{
const size_t offset = offsetof(struct trace_iterator, seq);
/*
* Keep gcc from complaining about overwriting more than just one
* member in the structure.
*/
memset((char *)iter + offset, 0, sizeof(struct trace_iterator) - offset);
iter->pos = -1;
}
#endif /* _LINUX_KERNEL_TRACE_H */

6
kernel/trace/trace_kdb.c
View File

@@ -40,12 +40,8 @@ static void ftrace_dump_buf(int skip_lines, long cpu_file)
kdb_printf("Dumping ftrace buffer:\n");
/* reset all but tr, trace, and overruns */
memset(&iter.seq, 0,
sizeof(struct trace_iterator) -
offsetof(struct trace_iterator, seq));
trace_iterator_reset(&iter);
iter.iter_flags |= TRACE_FILE_LAT_FMT;
iter.pos = -1;
if (cpu_file == RING_BUFFER_ALL_CPUS) {
for_each_tracing_cpu(cpu) {