linux-kernel - Re: [PATCH] fs: fat: Prevent fsfuzzer from dominating the console

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Message-ID: <1978ae5ae71.d8a9ec42669040.6118933001659818858@linux.beauty>
Date: Fri, 20 Jun 2025 09:13:17 +0800
From: Li Chen <me@...ux.beauty>
To: "OGAWA Hirofumi" <hirofumi@...l.parknet.co.jp>
Cc: "linux-kernel" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] fs: fat: Prevent fsfuzzer from dominating the console

Hi OGAWA,

 ---- On Thu, 19 Jun 2025 20:04:33 +0800  OGAWA Hirofumi <hirofumi@...l.parknet.co.jp> wrote --- 
 > Li Chen <me@...ux.beauty> writes:
 > 
 > > Signed-off-by: Li Chen <chenl311@...natelecom.cn>
 > > Reviewed-by: Bin Lai <laib2@...natelecom.cn>
 > > ---
 > >  fs/fat/misc.c | 4 +++-
 > >  1 file changed, 3 insertions(+), 1 deletion(-)
 > >
 > > diff --git a/fs/fat/misc.c b/fs/fat/misc.c
 > > index c7a2d27120bab..75c2b59fbd532 100644
 > > --- a/fs/fat/misc.c
 > > +++ b/fs/fat/misc.c
 > > @@ -23,8 +23,10 @@ void __fat_fs_error(struct super_block *sb, int report, const char *fmt, ...)
 > >      struct fat_mount_options *opts = &MSDOS_SB(sb)->options;
 > >      va_list args;
 > >      struct va_format vaf;
 > > +    static DEFINE_RATELIMIT_STATE(fat_err_rs, DEFAULT_RATELIMIT_INTERVAL,
 > > +                                  DEFAULT_RATELIMIT_BURST);
 > >  
 > > -    if (report) {
 > > +    if (report && __ratelimit(&fat_err_rs)) {
 > >          va_start(args, fmt);
 > >          vaf.fmt = fmt;
 > >          vaf.va = &args;
 > 
 > Why didn't use fat_fs_error_ratelimit()?

Oops, I missed that. I'll use it in v2. Thanks!

Regards,
Li