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authorRandy Dunlap <rdunlap@infradead.org>2022-03-08 06:32:55 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2022-03-18 16:17:56 +0300
commit96c9e802c64014a7716865332d732cc9c7f24593 (patch)
treee04ae5e9ab904ff4edf3aeb876804d1544ed3b64 /drivers/misc
parent202c08914ba50dd324e42d5ad99535a89f242560 (diff)
downloadlinux-96c9e802c64014a7716865332d732cc9c7f24593.tar.xz
kgdbts: fix return value of __setup handler
__setup() handlers should return 1 to indicate that the boot option has been handled. A return of 0 causes the boot option/value to be listed as an Unknown kernel parameter and added to init's (limited) environment strings. So return 1 from kgdbts_option_setup(). Unknown kernel command line parameters "BOOT_IMAGE=/boot/bzImage-517rc7 kgdboc=kbd kgdbts=", will be passed to user space. Run /sbin/init as init process with arguments: /sbin/init with environment: HOME=/ TERM=linux BOOT_IMAGE=/boot/bzImage-517rc7 kgdboc=kbd kgdbts= Link: lore.kernel.org/r/64644a2f-4a20-bab3-1e15-3b2cdd0defe3@omprussia.ru Fixes: e8d31c204e36 ("kgdb: add kgdb internal test suite") Cc: kgdb-bugreport@lists.sourceforge.net Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Daniel Thompson <daniel.thompson@linaro.org> Cc: Douglas Anderson <dianders@chromium.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reported-by: Igor Zhbanov <i.zhbanov@omprussia.ru> Reviewed-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Link: https://lore.kernel.org/r/20220308033255.22118-1-rdunlap@infradead.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc')
-rw-r--r--drivers/misc/kgdbts.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/misc/kgdbts.c b/drivers/misc/kgdbts.c
index 67c5b452dd35..88b91ad8e541 100644
--- a/drivers/misc/kgdbts.c
+++ b/drivers/misc/kgdbts.c
@@ -1070,10 +1070,10 @@ static int kgdbts_option_setup(char *opt)
{
if (strlen(opt) >= MAX_CONFIG_LEN) {
printk(KERN_ERR "kgdbts: config string too long\n");
- return -ENOSPC;
+ return 1;
}
strcpy(config, opt);
- return 0;
+ return 1;
}
__setup("kgdbts=", kgdbts_option_setup);