Replace BUG_ON() with panic() in panic_on_wq_watchdog(). This is not
a bug condition but a deliberate forced panic requested by the user
via module parameters to crash the system for debugging purposes.

Using panic() instead of BUG_ON() makes this intent clearer and provides
more informative output about which threshold was exceeded and the actual
values, making it easier to diagnose the stall condition from crash dumps.

Signed-off-by: Breno Leitao <leitao@debian.org>
---
 kernel/workqueue.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 6f63899dd6317..754833b383fe9 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -7574,10 +7574,14 @@ static void panic_on_wq_watchdog(unsigned int stall_time_sec)
 
 	if (wq_panic_on_stall) {
 		wq_stall++;
-		BUG_ON(wq_stall >= wq_panic_on_stall);
+		if (wq_stall >= wq_panic_on_stall)
+			panic("workqueue: %u stall(s) exceeded threshold %u\n",
+			      wq_stall, wq_panic_on_stall);
 	}
 
-	BUG_ON(wq_panic_on_stall_time && stall_time_sec >= wq_panic_on_stall_time);
+	if (wq_panic_on_stall_time && stall_time_sec >= wq_panic_on_stall_time)
+		panic("workqueue: stall lasted %us, exceeding threshold %us\n",
+		      stall_time_sec, wq_panic_on_stall_time);
 }
 
 static void wq_watchdog_reset_touched(void)

-- 
2.47.3