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authorTiezhu Yang <yangtiezhu@loongson.cn>2020-08-11 18:34:47 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-08-12 10:58:00 -0700
commit3adf3bae0d612357da516d39e1584f1547eb6e86 (patch)
tree7b1df2a8ad78e4b7fbe2c199f50ae85bc921fa2d /lib/Kconfig.debug
parent63646bc9f95f7faf5345e54a59fd1ecdd4ba5316 (diff)
lib/test_lockup.c: fix return value of test_lockup_init()
Since filp_open() returns an error pointer, we should use IS_ERR() to check the return value and then return PTR_ERR() if failed to get the actual return value instead of always -EINVAL. E.g. without this patch: [root@localhost loongson]# ls no_such_file ls: cannot access no_such_file: No such file or directory [root@localhost loongson]# modprobe test_lockup file_path=no_such_file lock_sb_umount time_secs=60 state=S modprobe: ERROR: could not insert 'test_lockup': Invalid argument [root@localhost loongson]# dmesg | tail -1 [ 126.100596] test_lockup: cannot find file_path With this patch: [root@localhost loongson]# ls no_such_file ls: cannot access no_such_file: No such file or directory [root@localhost loongson]# modprobe test_lockup file_path=no_such_file lock_sb_umount time_secs=60 state=S modprobe: ERROR: could not insert 'test_lockup': Unknown symbol in module, or unknown parameter (see dmesg) [root@localhost loongson]# dmesg | tail -1 [ 95.134362] test_lockup: failed to open no_such_file: -2 Fixes: aecd42df6d39 ("lib/test_lockup.c: add parameters for locking generic vfs locks") Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Cc: Kees Cook <keescook@chromium.org> Link: http://lkml.kernel.org/r/1595555407-29875-2-git-send-email-yangtiezhu@loongson.cn Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib/Kconfig.debug')
0 files changed, 0 insertions, 0 deletions