[PATCH 6.1 041/197] parisc: Prevent hung tasks when printing inventory on serial console

Greg Kroah-Hartman
2024-02-20T21:01:34Z

From: Helge Deller <deller@gmx.de>

commit c8708d758e715c3824a73bf0cda97292b52be44d upstream.

Printing the inventory on a serial console can be quite slow and thus may
trigger the hung task detector (CONFIG_DETECT_HUNG_TASK=y) and possibly
reboot the machine. Adding a cond_resched() prevents this.

Signed-off-by: Helge Deller <deller@gmx.de>
Cc: <stable@vger.kernel.org> # v6.0+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/parisc/kernel/drivers.c | 3 +++
1 file changed, 3 insertions(+)

--- a/arch/parisc/kernel/drivers.c
+++ b/arch/parisc/kernel/drivers.c
@@ -1003,6 +1003,9 @@ static __init int qemu_print_iodc_data(s

pr_info("\n");

+ /* Prevent hung task messages when printing on serial console */
+ cond_resched();
+
pr_info("#define HPA_%08lx_DESCRIPTION \"%s\"\n",
hpa, parisc_hardware_description(&dev->id));