Commit 0a1eb2d474ed ("fs/proc: Stop reporting eip and esp in
/proc/PID/stat") stopped reporting eip/esp and commit fd7d56270b52
("fs/proc: Report eip/esp in /prod/PID/stat for coredumping")
reintroduced the feature to fix a regression with userspace core dump
handlers (such as minicoredumper).
Because PF_DUMPCORE is only set for the primary thread, this didn't fix
the original problem for secondary threads. This commit checks
mm->core_state instead, as already done for /proc/<pid>/status in
task_core_dumping(). As we have a mm_struct available here anyway, this
seems to be a clean solution.
Signed-off-by: Jan Luebbe <jlu@xxxxxxxxxxxxxx>
---
fs/proc/array.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/proc/array.c b/fs/proc/array.c
index 2edbb657f859..b76b1e29fc36 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -462,7 +462,7 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
* a program is not able to use ptrace(2) in that case. It is
* safe because the task has stopped executing permanently.
*/
- if (permitted && (task->flags & PF_DUMPCORE)) {
+ if (permitted && (!!mm->core_state)) {
if (try_get_task_stack(task)) {
eip = KSTK_EIP(task);
esp = KSTK_ESP(task);
--
2.11.0
