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authorTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>2020-10-08 22:37:23 +0900
committerJens Axboe <axboe@kernel.dk>2020-10-08 10:16:59 -0600
commitf4ac712e4fe009635344b9af5d890fe25fcc8c0d (patch)
tree9645a469730736c42d607e257ccd373a14469de6 /block
parent1da30f952a81718a9c3b651121a274b093f44932 (diff)
downloadlinux-f4ac712e4fe009635344b9af5d890fe25fcc8c0d.tar.bz2
block: ratelimit handle_bad_sector() message
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>
Diffstat (limited to 'block')
-rw-r--r--block/blk-core.c9
1 files changed, 4 insertions, 5 deletions
diff --git a/block/blk-core.c b/block/blk-core.c
index 3b01e7f3c7a3..ac00d2fa4eb4 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -646,11 +646,10 @@ 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