user/sven/linux.git/block/bdev.c, branch v5.15.87

block: simplify the block device syncing code

2022-04-27T12:38:50Z

[ Upstream commit 1e03a36bdff4709c1bbf0f57f60ae3f776d51adf ] Get rid of the indirections and just provide a sync_bdevs helper for the generic sync code. Signed-off-by: Christoph Hellwig Link: https://lore.kernel.org/r/20211019062530.2174626-8-hch@lst.de Signed-off-by: Jens Axboe Signed-off-by: Sasha Levin

block: remove __sync_blockdev

2022-04-27T12:38:50Z

[ Upstream commit 70164eb6ccb76ab679b016b4b60123bf4ec6c162 ] Instead offer a new sync_blockdev_nowait helper for the !wait case. This new helper is exported as it will grow modular callers in a bit. Signed-off-by: Christoph Hellwig Link: https://lore.kernel.org/r/20211019062530.2174626-3-hch@lst.de Signed-off-by: Jens Axboe Signed-off-by: Sasha Levin

block: genhd: fix double kfree() in __alloc_disk_node()

2021-10-02T13:29:20Z

syzbot is reporting use-after-free read at bdev_free_inode() [1], for kfree() from __alloc_disk_node() is called before bdev_free_inode() (which is called after RCU grace period) reads bdev->bd_disk and calls kfree(bdev->bd_disk). Fix use-after-free read followed by double kfree() problem by making sure that bdev->bd_disk is NULL when calling iput(). Link: https://syzkaller.appspot.com/bug?extid=8281086e8a6fbfbd952a [1] Reported-by: syzbot Signed-off-by: Tetsuo Handa Reviewed-by: Christoph Hellwig Link: https://lore.kernel.org/r/e6dd13c5-8db0-4392-6e78-a42ee5d2a1c4@i-love.sakura.ne.jp Signed-off-by: Jens Axboe

block: move fs/block_dev.c to block/bdev.c

2021-09-07T14:39:40Z

Move it together with the rest of the block layer. Signed-off-by: Christoph Hellwig Link: https://lore.kernel.org/r/20210907141303.1371844-3-hch@lst.de Signed-off-by: Jens Axboe