Benjamin Berg b7b44ee08d um: Don't use vfprintf() for os_info() ...

[ Upstream commit 236f9fe39b02c15fa5530b53e9cca48354394389 ]

The threads allocated inside the kernel have only a single page of
stack. Unfortunately, the vfprintf function in standard glibc may use
too much stack-space, overflowing it.

To make os_info safe to be used by helper threads, use the kernel
vscnprintf function into a smallish buffer and write out the information
to stderr.

Signed-off-by: Benjamin Berg <benjamin@sipsolutions.net>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2024-02-23 08:54:49 +01:00

..

drivers

um: Add SPDX headers for files in arch/um/os-Linux

2019-09-15 21:37:17 +02:00

skas

um: add "noreboot" command line option for PANIC_TIMEOUT=-1 setups

2022-08-25 11:40:37 +02:00

elf_aux.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

execvp.c

um: Use os_warn to print out pre-boot warning/error messages

2017-07-05 23:18:25 +02:00

file.c

um: Use fdatasync() when mapping the UBD FSYNC command

2020-06-02 22:37:55 +02:00

helper.c

um: Fix naming clash between UML and scheduler

2024-02-23 08:54:49 +01:00

irq.c

um: Monitor error events in IRQ controller

2020-12-13 22:38:28 +01:00

main.c

um: Don't trace irqflags during shutdown

2019-11-25 22:42:57 +01:00

Makefile

um: Increase stack frame size threshold for signal.c

2020-12-13 22:22:00 +01:00

mem.c

um: Add SPDX headers for files in arch/um/os-Linux

2019-09-15 21:37:17 +02:00

process.c

um: Add SPDX headers for files in arch/um/os-Linux

2019-09-15 21:37:17 +02:00

registers.c

um: registers: Rename function names to avoid conflicts and build problems

2022-01-27 11:04:48 +01:00

sigio.c

um: rename set_signals() to um_set_signals()

2022-01-27 11:03:44 +01:00

signal.c

um: rename set_signals() to um_set_signals()

2022-01-27 11:03:44 +01:00

start_up.c

um: registers: Rename function names to avoid conflicts and build problems

2022-01-27 11:04:48 +01:00

time.c

um: fix os_idle_sleep() to not hang

2021-01-26 22:11:38 +01:00

tty.c

um: Add SPDX headers for files in arch/um/os-Linux

2019-09-15 21:37:17 +02:00

umid.c

um: Remove use of asprinf in umid.c

2020-12-13 22:21:07 +01:00

user_syms.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

util.c

um: Don't use vfprintf() for os_info()

2024-02-23 08:54:49 +01:00