linux-kernel - [PATCH 1/1] lib/dump_stack: report process UID in dump_stack_print

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Message-ID: <20240615041358.103791-1-surenb@google.com>
Date: Fri, 14 Jun 2024 21:13:58 -0700
From: Suren Baghdasaryan <surenb@...gle.com>
To: akpm@...ux-foundation.org
Cc: linux-kernel@...r.kernel.org, Suren Baghdasaryan <surenb@...gle.com>
Subject: [PATCH 1/1] lib/dump_stack: report process UID in dump_stack_print_info()

To make it easier to identify the crashing process, report effective
UID when dumping the stack.

Signed-off-by: Suren Baghdasaryan <surenb@...gle.com>
---
 lib/dump_stack.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/lib/dump_stack.c b/lib/dump_stack.c
index 222c6d6c8281..ab31f53d23da 100644
--- a/lib/dump_stack.c
+++ b/lib/dump_stack.c
@@ -54,8 +54,10 @@ void __init dump_stack_set_arch_desc(const char *fmt, ...)
  */
 void dump_stack_print_info(const char *log_lvl)
 {
-	printk("%sCPU: %d PID: %d Comm: %.20s %s%s %s %.*s" BUILD_ID_FMT "\n",
-	       log_lvl, raw_smp_processor_id(), current->pid, current->comm,
+	printk("%sCPU: %d UID: %u PID: %d Comm: %.20s %s%s %s %.*s" BUILD_ID_FMT "\n",
+	       log_lvl, raw_smp_processor_id(),
+	       __kuid_val(current_real_cred()->euid),
+	       current->pid, current->comm,
 	       kexec_crash_loaded() ? "Kdump: loaded " : "",
 	       print_tainted(),
 	       init_utsname()->release,

base-commit: c286c21ff94252f778515b21b6bebe749454a852
-- 
2.45.2.627.g7a2c4fd464-goog