Daniel Thompson a6b9c5de4a serial: kgdboc: Fix NMI-safety problems from keyboard reset code ... commit b2aba15ad6 upstream. Currently, when kdb is compiled with keyboard support, then we will use schedule_work() to provoke reset of the keyboard status. Unfortunately schedule_work() gets called from the kgdboc post-debug-exception handler. That risks deadlock since schedule_work() is not NMI-safe and, even on platforms where the NMI is not directly used for debugging, the debug trap can have NMI-like behaviour depending on where breakpoints are placed. Fix this by using the irq work system, which is NMI-safe, to defer the call to schedule_work() to a point when it is safe to call. Reported-by: Liuye <liu.yeC@h3c.com> Closes: https://lore.kernel.org/all/20240228025602.3087748-1-liu.yeC@h3c.com/ Cc: stable@vger.kernel.org Reviewed-by: Douglas Anderson <dianders@chromium.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20240424-kgdboc_fix_schedule_work-v2-1-50f5a490aec5@linaro.org Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2024-05-25 16:21:35 +02:00
..
hvc	hvc/xen: fix event channel handling for secondary consoles	2023-11-28 17:07:08 +00:00
ipwireless	…
serdev	…
serial	serial: kgdboc: Fix NMI-safety problems from keyboard reset code	2024-05-25 16:21:35 +02:00
vt	vt: fix unicode buffer corruption when deleting characters	2024-04-03 15:19:42 +02:00
Kconfig	…
Makefile	…
amiserial.c	…
ehv_bytechan.c	…
goldfish.c	…
mips_ejtag_fdc.c	…
moxa.c	…
mxser.c	…
n_gsm.c	tty: n_gsm: require CAP_NET_ADMIN to attach N_GSM0710 ldisc	2024-04-13 13:05:23 +02:00
n_hdlc.c	…
n_null.c	…
n_tty.c	…
nozomi.c	…
pty.c	…
rpmsg_tty.c	…
synclink_gt.c	…
sysrq.c	tty/sysrq: replace smp_processor_id() with get_cpu()	2023-11-28 17:07:08 +00:00
tty.h	tty: change tty_write_lock()'s ndelay parameter to bool	2024-01-25 15:27:47 -08:00
tty_audit.c	…
tty_baudrate.c	…
tty_buffer.c	…
tty_io.c	usb: cdc-acm: return correct error code on unsupported break	2024-01-25 15:27:47 -08:00
tty_ioctl.c	tty: allow TIOCSLCKTRMIOS with CAP_CHECKPOINT_RESTORE	2024-02-05 20:12:58 +00:00
tty_jobctrl.c	…
tty_ldisc.c	…
tty_ldsem.c	…
tty_mutex.c	…
tty_port.c	…
ttynull.c	…
vcc.c	…