um: Always dump trace for specified task in show_stack

BugLink: https://bugs.launchpad.net/bugs/2101915

[ Upstream commit 0f659ff362eac69777c4c191b7e5ccb19d76c67d ]

Currently, show_stack() always dumps the trace of the current task.
However, it should dump the trace of the specified task if one is
provided. Otherwise, things like running "echo t > sysrq-trigger"
won't work as expected.

Fixes: 970e51fead ("um: Add support for CONFIG_STACKTRACE")
Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com>
Link: https://patch.msgid.link/20241106103933.1132365-1-tiwei.btw@antgroup.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>

This commit is contained in:

Tiwei Bie

2025-03-11 08:51:19 +09:00

committed by

Stefan Bader

parent d036e43b98

commit aead762b56

1 changed files with 1 additions and 1 deletions

									
										arch/um/kernel/sysrq.c
									
		+1
		-1
	
												View File
												
				@@ -53,5 +53,5 @@ void show_stack(struct task_struct *task, unsigned long *stack,

					}

					printk("%sCall Trace:\n", loglvl);

					dump_trace(current, &stackops, (void *)loglvl);

					dump_trace(task ?: current, &stackops, (void *)loglvl);

				}