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| author | Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> | 2020-10-08 22:37:23 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-10-30 10:38:26 +0100 |
| commit | f86b9bf6228bb334fe1addcd566a658ecbd08f7e (patch) | |
| tree | 1f92eefb77893b5a2f040770136701e4d0d17e6c | |
| parent | 847fbf22ce2e1308454d793174063646f560d819 (diff) | |
block: ratelimit handle_bad_sector() message
[ Upstream commit f4ac712e4fe009635344b9af5d890fe25fcc8c0d ]
syzbot is reporting unkillable task [1], for the caller is failing to
handle a corrupted filesystem image which attempts to access beyond
the end of the device. While we need to fix the caller, flooding the
console with handle_bad_sector() message is unlikely useful.
[1] https://syzkaller.appspot.com/bug?id=f1f49fb971d7a3e01bd8ab8cff2ff4572ccf3092
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | block/blk-core.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index ce3710404544..445b878e3519 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -2127,11 +2127,10 @@ static void handle_bad_sector(struct bio *bio, sector_t maxsector) { char b[BDEVNAME_SIZE]; - printk(KERN_INFO "attempt to access beyond end of device\n"); - printk(KERN_INFO "%s: rw=%d, want=%Lu, limit=%Lu\n", - bio_devname(bio, b), bio->bi_opf, - (unsigned long long)bio_end_sector(bio), - (long long)maxsector); + pr_info_ratelimited("attempt to access beyond end of device\n" + "%s: rw=%d, want=%llu, limit=%llu\n", + bio_devname(bio, b), bio->bi_opf, + bio_end_sector(bio), maxsector); } #ifdef CONFIG_FAIL_MAKE_REQUEST |