[PATCH 04/17] exit: Use the correct exit_code in /proc/<pid>/stat
From: Eric W. Biederman <hidden>
Date: 2022-01-03 21:33:43
Also in:
linux-arch, lkml
Subsystem:
filesystems (vfs and infrastructure), proc filesystem, the rest · Maintainers:
Alexander Viro, Christian Brauner, Linus Torvalds
Since do_proc_statt was modified to return process wide values instead of per task values the exit_code calculation has never been updated. Update it now to return the process wide exit_code when it is requested and available. History-Tree: https://git.kernel.org/pub/scm/linux/kernel/git/tglx/history.git Fixes: bf719d26a5c1 ("[PATCH] distinct tgid/tid CPU usage") Signed-off-by: "Eric W. Biederman" <redacted> --- fs/proc/array.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/fs/proc/array.c b/fs/proc/array.c
index ff869a66b34e..43a7abde9e42 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c@@ -468,6 +468,7 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns, u64 cgtime, gtime; unsigned long rsslim = 0; unsigned long flags; + int exit_code = task->exit_code; state = *get_task_state(task); vsize = eip = esp = 0;
@@ -531,6 +532,9 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns, maj_flt += sig->maj_flt; thread_group_cputime_adjusted(task, &utime, &stime); gtime += sig->gtime; + + if (sig->flags & (SIGNAL_GROUP_EXIT | SIGNAL_STOP_STOPPED)) + exit_code = sig->group_exit_code; } sid = task_session_nr_ns(task, ns);
@@ -630,7 +634,7 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns, seq_puts(m, " 0 0 0 0 0 0 0"); if (permitted) - seq_put_decimal_ll(m, " ", task->exit_code); + seq_put_decimal_ll(m, " ", exit_code); else seq_puts(m, " 0");
--
2.29.2