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2023-10-28porting: update locking requirementsChristian Brauner1-0/+7
Now that s_umount is never taken under open_mutex update the documentation to say so. Link: https://lore.kernel.org/r/20231017184823.1383356-1-hch@lst.de Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-10-28fs: assert that open_mutex isn't held over holder opsChristian Brauner1-0/+1
With recent block level changes we should never be in a situation where we hold disk->open_mutex when calling into these helpers. So assert that in the code. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20231017184823.1383356-6-hch@lst.de Reviewed-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-10-28block: assert that we're not holding open_mutex over blk_report_disk_deadChristian Brauner1-0/+7
blk_report_disk_dead() has the following major callers: (1) del_gendisk() (2) blk_mark_disk_dead() Since del_gendisk() acquires disk->open_mutex it's clear that all callers are assumed to be called without disk->open_mutex held. In turn, blk_report_disk_dead() is called without disk->open_mutex held in del_gendisk(). All callers of blk_mark_disk_dead() call it without disk->open_mutex as well. Ensure that it is clear that blk_report_disk_dead() is called without disk->open_mutex on purpose by asserting it and a comment in the code. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20231017184823.1383356-5-hch@lst.de Reviewed-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-10-28block: move bdev_mark_dead out of disk_check_media_changeChristoph Hellwig4-18/+17
disk_check_media_change is mostly called from ->open where it makes little sense to mark the file system on the device as dead, as we are just opening it. So instead of calling bdev_mark_dead from disk_check_media_change move it into the few callers that are not in an open instance. This avoid calling into bdev_mark_dead and thus taking s_umount with open_mutex held. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20231017184823.1383356-4-hch@lst.de Reviewed-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Christian Brauner <brauner@kernel.org> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-10-28block: WARN_ON_ONCE() when we remove active partitionsChristian Brauner1-13/+17
The logic for disk->open_partitions is: blkdev_get_by_*() -> bdev_is_partition() -> blkdev_get_part() -> blkdev_get_whole() // bdev_whole->bd_openers++ -> if (part->bd_openers == 0) disk->open_partitions++ part->bd_openers In other words, when we first claim/open a partition we increment disk->open_partitions and only when all part->bd_openers are closed will disk->open_partitions be zero. That should mean that disk->open_partitions is always > 0 as long as there's anyone that has an open partition. So the check for disk->open_partitions should mean that we can never remove an active partition that has a holder and holder ops set. Assert that in the code. The main disk isn't removed so that check doesn't work for disk->part0 which is what we want. After all we only care about partition not about the main disk. Link: https://lore.kernel.org/r/20231017184823.1383356-3-hch@lst.de Reviewed-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-10-28block: simplify bdev_del_partition()Christian Brauner1-1/+12
BLKPG_DEL_PARTITION refuses to delete partitions that still have openers, i.e., that has an elevated @bdev->bd_openers count. If a device is claimed by setting @bdev->bd_holder and @bdev->bd_holder_ops @bdev->bd_openers and @bdev->bd_holders are incremented. @bdev->bd_openers is effectively guaranteed to be >= @bdev->bd_holders. So as long as @bdev->bd_openers isn't zero we know that this partition is still in active use and that there might still be @bdev->bd_holder and @bdev->bd_holder_ops set. The only current example is @fs_holder_ops for filesystems. But that means bdev_mark_dead() which calls into bdev->bd_holder_ops->mark_dead::fs_bdev_mark_dead() is a nop. As long as there's an elevated @bdev->bd_openers count we can't delete the partition and if there isn't an elevated @bdev->bd_openers count then there's no @bdev->bd_holder or @bdev->bd_holder_ops. So simply open-code what we need to do. This gets rid of one more instance where we acquire s_umount under @disk->open_mutex. Link: https://lore.kernel.org/r/20231016-fototermin-umriss-59f1ea6c1fe6@brauner Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20231017184823.1383356-2-hch@lst.de Reviewed-by: Ming Lei <ming.lei@redhat.com> Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-10-28fs: Avoid grabbing sb->s_umount under bdev->bd_holder_lockJan Kara3-22/+38
The implementation of bdev holder operations such as fs_bdev_mark_dead() and fs_bdev_sync() grab sb->s_umount semaphore under bdev->bd_holder_lock. This is problematic because it leads to disk->open_mutex -> sb->s_umount lock ordering which is counterintuitive (usually we grab higher level (e.g. filesystem) locks first and lower level (e.g. block layer) locks later) and indeed makes lockdep complain about possible locking cycles whenever we open a block device while holding sb->s_umount semaphore. Implement a function bdev_super_lock_shared() which safely transitions from holding bdev->bd_holder_lock to holding sb->s_umount on alive superblock without introducing the problematic lock dependency. We use this function fs_bdev_sync() and fs_bdev_mark_dead(). Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20231018152924.3858-1-jack@suse.cz Link: https://lore.kernel.org/r/20231017184823.1383356-1-hch@lst.de Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-10-28jfs: fix log->bdev_handle null ptr deref in lbmStartIOLizhi Xu1-1/+5
When sbi->flag is JFS_NOINTEGRITY in lmLogOpen(), log->bdev_handle can't be inited, so it value will be NULL. Therefore, add the "log ->no_integrity=1" judgment in lbmStartIO() to avoid such problems. Reported-and-tested-by: syzbot+23bc20037854bb335d59@syzkaller.appspotmail.com Signed-off-by: Lizhi Xu <lizhi.xu@windriver.com> Link: https://lore.kernel.org/r/20231009094557.1398920-1-lizhi.xu@windriver.com Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-10-28bcache: Fixup error handling in register_cache()Jan Kara1-13/+10
Coverity has noticed that the printing of error message in register_cache() uses already freed bdev_handle to get to bdev. In fact the problem has been there even before commit "bcache: Convert to bdev_open_by_path()" just a bit more subtle one - cache object itself could have been freed by the time we looked at ca->bdev and we don't hold any reference to bdev either so even that could in principle go away (due to device unplug or similar). Fix all these problems by printing the error message before closing the bdev. Fixes: dc893f51d24a ("bcache: Convert to bdev_open_by_path()") Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20231004093757.11560-1-jack@suse.cz Asked-by: Coly Li <colyli@suse.de> Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-10-28xfs: Convert to bdev_open_by_path()Jan Kara3-31/+36
Convert xfs to use bdev_open_by_path() and pass the handle around. CC: "Darrick J. Wong" <djwong@kernel.org> CC: linux-xfs@vger.kernel.org Acked-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christian Brauner <brauner@kernel.org> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20230927093442.25915-28-jack@suse.cz Acked-by: "Darrick J. Wong" <djwong@kernel.org> Reviewed-by: "Darrick J. Wong" <djwong@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-10-28reiserfs: Convert to bdev_open_by_dev/path()Jan Kara3-36/+33
Convert reiserfs to use bdev_open_by_dev/path() and pass the handle around. CC: reiserfs-devel@vger.kernel.org Acked-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Christian Brauner <brauner@kernel.org> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20230927093442.25915-27-jack@suse.cz Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-10-28ocfs2: Convert to use bdev_open_by_dev()Jan Kara1-36/+45
Convert ocfs2 heartbeat code to use bdev_open_by_dev() and pass the handle around. CC: Joseph Qi <joseph.qi@linux.alibaba.com> CC: ocfs2-devel@oss.oracle.com Acked-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com> Reviewed-by: Christian Brauner <brauner@kernel.org> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20230927093442.25915-26-jack@suse.cz Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-10-28nfs/blocklayout: Convert to use bdev_open_by_dev/path()Jan Kara2-40/+38
Convert block device handling to use bdev_open_by_dev/path() and pass the handle around. CC: linux-nfs@vger.kernel.org CC: Trond Myklebust <trond.myklebust@hammerspace.com> CC: Anna Schumaker <anna@kernel.org> Acked-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Christian Brauner <brauner@kernel.org> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20230927093442.25915-25-jack@suse.cz Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-10-28jfs: Convert to bdev_open_by_dev()Jan Kara3-16/+18
Convert jfs to use bdev_open_by_dev() and pass the handle around. CC: Dave Kleikamp <shaggy@kernel.org> CC: jfs-discussion@lists.sourceforge.net Acked-by: Christoph Hellwig <hch@lst.de> Acked-by: Dave Kleikamp <dave.kleikamp@oracle.com> Reviewed-by: Christian Brauner <brauner@kernel.org> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20230927093442.25915-24-jack@suse.cz Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-10-28f2fs: Convert to bdev_open_by_dev/path()Jan Kara2-6/+8
Convert f2fs to use bdev_open_by_dev/path() and pass the handle around. CC: Jaegeuk Kim <jaegeuk@kernel.org> CC: Chao Yu <chao@kernel.org> CC: linux-f2fs-devel@lists.sourceforge.net Acked-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Christian Brauner <brauner@kernel.org> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20230927093442.25915-23-jack@suse.cz Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-10-28ext4: Convert to bdev_open_by_dev()Jan Kara3-30/+33
Convert ext4 to use bdev_open_by_dev() and pass the handle around. CC: linux-ext4@vger.kernel.org CC: Ted Tso <tytso@mit.edu> Acked-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Christian Brauner <brauner@kernel.org> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20230927093442.25915-22-jack@suse.cz Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-10-28erofs: Convert to use bdev_open_by_path()Jan Kara3-13/+13
Convert erofs to use bdev_open_by_path() and pass the handle around. CC: Gao Xiang <xiang@kernel.org> CC: Chao Yu <chao@kernel.org> CC: linux-erofs@lists.ozlabs.org Acked-by: Christoph Hellwig <hch@lst.de> Acked-by: Gao Xiang <hsiangkao@linux.alibaba.com> Reviewed-by: Christian Brauner <brauner@kernel.org> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20230927093442.25915-21-jack@suse.cz Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-10-28btrfs: Convert to bdev_open_by_path()Jan Kara4-72/+73
Convert btrfs to use bdev_open_by_path() and pass the handle around. We also drop the holder from struct btrfs_device as it is now not needed anymore. CC: David Sterba <dsterba@suse.com> CC: linux-btrfs@vger.kernel.org Acked-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Christian Brauner <brauner@kernel.org> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20230927093442.25915-20-jack@suse.cz Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-10-28fs: Convert to bdev_open_by_dev()Jan Kara4-8/+12
Convert mount code to use bdev_open_by_dev() and propagate the handle around to bdev_release(). Acked-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Christian Brauner <brauner@kernel.org> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20230927093442.25915-19-jack@suse.cz Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-10-28mm/swap: Convert to use bdev_open_by_dev()Jan Kara2-11/+13
Convert swapping code to use bdev_open_by_dev() and pass the handle around. CC: linux-mm@kvack.org CC: Andrew Morton <akpm@linux-foundation.org> Acked-by: Christoph Hellwig <hch@lst.de> Acked-by: Christian Brauner <brauner@kernel.org> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20230927093442.25915-18-jack@suse.cz Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-10-28PM: hibernate: Drop unused snapshot_test argumentJan Kara3-11/+11
snapshot_test argument is now unused in swsusp_close() and load_image_and_restore(). Drop it CC: linux-pm@vger.kernel.org Acked-by: Christoph Hellwig <hch@lst.de> Acked-by: "Rafael J. Wysocki" <rafael@kernel.org> Acked-by: Christian Brauner <brauner@kernel.org> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20230927093442.25915-17-jack@suse.cz Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-10-28PM: hibernate: Convert to bdev_open_by_dev()Jan Kara1-15/+16
Convert hibernation code to use bdev_open_by_dev(). CC: linux-pm@vger.kernel.org Acked-by: Christoph Hellwig <hch@lst.de> Acked-by: "Rafael J. Wysocki" <rafael@kernel.org> Acked-by: Christian Brauner <brauner@kernel.org> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20230927093442.25915-16-jack@suse.cz Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-10-28scsi: target: Convert to bdev_open_by_path()Jan Kara4-22/+26
Convert iblock and pscsi drivers to use bdev_open_by_path() and pass the handle around. CC: target-devel@vger.kernel.org CC: linux-scsi@vger.kernel.org Acked-by: Christoph Hellwig <hch@lst.de> Acked-by: Christian Brauner <brauner@kernel.org> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20230927093442.25915-15-jack@suse.cz Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com> Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-10-28s390/dasd: Convert to bdev_open_by_path()Jan Kara4-30/+31
Convert dasd to use bdev_open_by_path() and pass the handle around. CC: linux-s390@vger.kernel.org CC: Christian Borntraeger <borntraeger@linux.ibm.com> CC: Sven Schnelle <svens@linux.ibm.com> Acked-by: Christoph Hellwig <hch@lst.de> Acked-by: Christian Brauner <brauner@kernel.org> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20230927093442.25915-14-jack@suse.cz Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-10-28nvmet: Convert to bdev_open_by_path()Jan Kara2-9/+12
Convert nvmet to use bdev_open_by_path() and pass the handle around. CC: linux-nvme@lists.infradead.org Acked-by: Christoph Hellwig <hch@lst.de> Acked-by: Christian Brauner <brauner@kernel.org> Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20230927093442.25915-13-jack@suse.cz Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-10-28mtd: block2mtd: Convert to bdev_open_by_dev/path()Jan Kara1-22/+29
Convert block2mtd to use bdev_open_by_dev() and bdev_open_by_path() and pass the handle around. CC: Joern Engel <joern@lazybastard.org> CC: linux-mtd@lists.infradead.org Acked-by: Christoph Hellwig <hch@lst.de> Acked-by: Christian Brauner <brauner@kernel.org> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20230927093442.25915-12-jack@suse.cz Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-10-28md: Convert to bdev_open_by_dev()Jan Kara2-18/+9
Convert md to use bdev_open_by_dev() and pass the handle around. We also don't need the 'Holder' flag anymore so remove it. CC: linux-raid@vger.kernel.org CC: Song Liu <song@kernel.org> Acked-by: Song Liu <song@kernel.org> Acked-by: Christoph Hellwig <hch@lst.de> Acked-by: Christian Brauner <brauner@kernel.org> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20230927093442.25915-11-jack@suse.cz Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-10-28dm: Convert to bdev_open_by_dev()Jan Kara2-9/+12
Convert device mapper to use bdev_open_by_dev() and pass the handle around. CC: Alasdair Kergon <agk@redhat.com> CC: Mike Snitzer <snitzer@kernel.org> CC: dm-devel@redhat.com Acked-by: Christoph Hellwig <hch@lst.de> Acked-by: Christian Brauner <brauner@kernel.org> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20230927093442.25915-10-jack@suse.cz Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-10-28bcache: Convert to bdev_open_by_path()Jan Kara2-37/+43
Convert bcache to use bdev_open_by_path() and pass the handle around. CC: linux-bcache@vger.kernel.org CC: Coly Li <colyli@suse.de> CC: Kent Overstreet <kent.overstreet@gmail.com> Acked-by: Christoph Hellwig <hch@lst.de> Acked-by: Christian Brauner <brauner@kernel.org> Acked-by: Coly Li <colyli@suse.de> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20230927093442.25915-9-jack@suse.cz Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-10-28zram: Convert to use bdev_open_by_dev()Jan Kara2-18/+15
Convert zram to use bdev_open_by_dev() and pass the handle around. CC: Minchan Kim <minchan@kernel.org> CC: Sergey Senozhatsky <senozhatsky@chromium.org> Acked-by: Christoph Hellwig <hch@lst.de> Acked-by: Christian Brauner <brauner@kernel.org> Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20230927093442.25915-8-jack@suse.cz Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-10-28xen/blkback: Convert to bdev_open_by_dev()Jan Kara3-23/+25
Convert xen/blkback to use bdev_open_by_dev() and pass the handle around. CC: xen-devel@lists.xenproject.org Acked-by: Christoph Hellwig <hch@lst.de> Acked-by: Christian Brauner <brauner@kernel.org> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20230927093442.25915-7-jack@suse.cz Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-10-28rnbd-srv: Convert to use bdev_open_by_path()Jan Kara2-14/+15
Convert rnbd-srv to use bdev_open_by_path() and pass the handle around. CC: Jack Wang <jinpu.wang@ionos.com> CC: "Md. Haris Iqbal" <haris.iqbal@ionos.com> Acked-by: "Md. Haris Iqbal" <haris.iqbal@ionos.com> Acked-by: Christoph Hellwig <hch@lst.de> Acked-by: Christian Brauner <brauner@kernel.org> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20230927093442.25915-6-jack@suse.cz Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-10-28pktcdvd: Convert to bdev_open_by_dev()Jan Kara2-36/+44
Convert pktcdvd to use bdev_open_by_dev(). Acked-by: Christoph Hellwig <hch@lst.de> Acked-by: Christian Brauner <brauner@kernel.org> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20230927093442.25915-5-jack@suse.cz Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-10-28drdb: Convert to use bdev_open_by_path()Jan Kara2-33/+34
Convert drdb to use bdev_open_by_path(). CC: drbd-dev@lists.linbit.com Acked-by: Christoph Hellwig <hch@lst.de> Acked-by: Christian Brauner <brauner@kernel.org> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20230927093442.25915-4-jack@suse.cz Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-10-28block: Use bdev_open_by_dev() in disk_scan_partitions() and blkdev_bszset()Jan Kara2-8/+10
Convert disk_scan_partitions() and blkdev_bszset() to use bdev_open_by_dev(). Acked-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Christian Brauner <brauner@kernel.org> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20230927093442.25915-3-jack@suse.cz Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-10-28block: Use bdev_open_by_dev() in blkdev_open()Jan Kara3-16/+32
Convert blkdev_open() to use bdev_open_by_dev(). To be able to propagate handle from blkdev_open() to blkdev_release() we need to stop using existence of file->private_data to determine exclusive block device opens. Use bdev_handle->mode for this purpose since file->f_flags isn't usable for this (O_EXCL is cleared from the flags during open). Acked-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Christian Brauner <brauner@kernel.org> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20230927093442.25915-2-jack@suse.cz Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-10-28block: Provide bdev_open_* functionsJan Kara2-0/+58
Create struct bdev_handle that contains all parameters that need to be passed to blkdev_put() and provide bdev_open_* functions that return this structure instead of plain bdev pointer. This will eventually allow us to pass one more argument to blkdev_put() (renamed to bdev_release()) without too much hassle. Acked-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Christian Brauner <brauner@kernel.org> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20230927093442.25915-1-jack@suse.cz Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-10-28tracing/kprobes: Fix symbol counting logic by looking at modules as wellAndrii Nakryiko1-4/+20
Recent changes to count number of matching symbols when creating a kprobe event failed to take into account kernel modules. As such, it breaks kprobes on kernel module symbols, by assuming there is no match. Fix this my calling module_kallsyms_on_each_symbol() in addition to kallsyms_on_each_match_symbol() to perform a proper counting. Link: https://lore.kernel.org/all/20231027233126.2073148-1-andrii@kernel.org/ Cc: Francis Laniel <flaniel@linux.microsoft.com> Cc: stable@vger.kernel.org Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Steven Rostedt <rostedt@goodmis.org> Fixes: b022f0c7e404 ("tracing/kprobes: Return EADDRNOTAVAIL when func matches several symbols") Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Song Liu <song@kernel.org> Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
2023-10-27ceph_wait_on_conflict_unlink(): grab reference before dropping ->d_lockAl Viro1-1/+1
Use of dget() after we'd dropped ->d_lock is too late - dentry might be gone by that point. Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2023-10-27io_uring: kiocb_done() should *not* trust ->ki_pos if ->{read,write}_iter() ↵Al Viro1-1/+1
failed ->ki_pos value is unreliable in such cases. For an obvious example, consider O_DSYNC write - we feed the data to page cache and start IO, then we make sure it's completed. Update of ->ki_pos is dealt with by the first part; failure in the second ends up with negative value returned _and_ ->ki_pos left advanced as if sync had been successful. In the same situation write(2) does not advance the file position at all. Reviewed-by: Christian Brauner <brauner@kernel.org> Reviewed-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2023-10-27sparc32: fix a braino in fault handling in csum_and_copy_..._user()Al Viro1-1/+1
Fault handler used to make non-trivial calls, so it needed to set a stack frame up. Used to be save ... - grab a stack frame, old %o... become %i... .... ret - go back to address originally in %o7, currently %i7 restore - switch to previous stack frame, in delay slot Non-trivial calls had been gone since ab5e8b331244 and that code should have become retl - go back to address in %o7 clr %o0 - have return value set to 0 What it had become instead was ret - go back to address in %i7 - return address of *caller* clr %o0 - have return value set to 0 which is not good, to put it mildly - we forcibly return 0 from csum_and_copy_{from,to}_iter() (which is what the call of that thing had been inlined into) and do that without dropping the stack frame of said csum_and_copy_..._iter(). Confuses the hell out of the caller of csum_and_copy_..._iter(), obviously... Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Fixes: ab5e8b331244 "sparc32: propagate the calling conventions change down to __csum_partial_copy_sparc_generic()" Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2023-10-27net: pcs: xpcs: Add 2500BASE-X case in get state for XPCS driversRaju Lakkaraju2-0/+31
Add DW_2500BASEX case in xpcs_get_state( ) to update speed, duplex and pause Signed-off-by: Raju Lakkaraju <Raju.Lakkaraju@microchip.com> Reviewed-by: Serge Semin <fancer.lancer@gmail.com> Link: https://lore.kernel.org/r/20231027044306.291250-1-Raju.Lakkaraju@microchip.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-10-27net: bpf: Use sockopt_lock_sock() in ip_sock_set_tos()Yonghong Song1-2/+2
With latest sync from net-next tree, bpf-next has a bpf selftest failure: [root@arch-fb-vm1 bpf]# ./test_progs -t setget_sockopt ... [ 76.194349] ============================================ [ 76.194682] WARNING: possible recursive locking detected [ 76.195039] 6.6.0-rc7-g37884503df08-dirty #67 Tainted: G W OE [ 76.195518] -------------------------------------------- [ 76.195852] new_name/154 is trying to acquire lock: [ 76.196159] ffff8c3e06ad8d30 (sk_lock-AF_INET){+.+.}-{0:0}, at: ip_sock_set_tos+0x19/0x30 [ 76.196669] [ 76.196669] but task is already holding lock: [ 76.197028] ffff8c3e06ad8d30 (sk_lock-AF_INET){+.+.}-{0:0}, at: inet_listen+0x21/0x70 [ 76.197517] [ 76.197517] other info that might help us debug this: [ 76.197919] Possible unsafe locking scenario: [ 76.197919] [ 76.198287] CPU0 [ 76.198444] ---- [ 76.198600] lock(sk_lock-AF_INET); [ 76.198831] lock(sk_lock-AF_INET); [ 76.199062] [ 76.199062] *** DEADLOCK *** [ 76.199062] [ 76.199420] May be due to missing lock nesting notation [ 76.199420] [ 76.199879] 2 locks held by new_name/154: [ 76.200131] #0: ffff8c3e06ad8d30 (sk_lock-AF_INET){+.+.}-{0:0}, at: inet_listen+0x21/0x70 [ 76.200644] #1: ffffffff90f96a40 (rcu_read_lock){....}-{1:2}, at: __cgroup_bpf_run_filter_sock_ops+0x55/0x290 [ 76.201268] [ 76.201268] stack backtrace: [ 76.201538] CPU: 4 PID: 154 Comm: new_name Tainted: G W OE 6.6.0-rc7-g37884503df08-dirty #67 [ 76.202134] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014 [ 76.202699] Call Trace: [ 76.202858] <TASK> [ 76.203002] dump_stack_lvl+0x4b/0x80 [ 76.203239] __lock_acquire+0x740/0x1ec0 [ 76.203503] lock_acquire+0xc1/0x2a0 [ 76.203766] ? ip_sock_set_tos+0x19/0x30 [ 76.204050] ? sk_stream_write_space+0x12a/0x230 [ 76.204389] ? lock_release+0xbe/0x260 [ 76.204661] lock_sock_nested+0x32/0x80 [ 76.204942] ? ip_sock_set_tos+0x19/0x30 [ 76.205208] ip_sock_set_tos+0x19/0x30 [ 76.205452] do_ip_setsockopt+0x4b3/0x1580 [ 76.205719] __bpf_setsockopt+0x62/0xa0 [ 76.205963] bpf_sock_ops_setsockopt+0x11/0x20 [ 76.206247] bpf_prog_630217292049c96e_bpf_test_sockopt_int+0xbc/0x123 [ 76.206660] bpf_prog_493685a3bae00bbd_bpf_test_ip_sockopt+0x49/0x4b [ 76.207055] bpf_prog_b0bcd27f269aeea0_skops_sockopt+0x44c/0xec7 [ 76.207437] __cgroup_bpf_run_filter_sock_ops+0xda/0x290 [ 76.207829] __inet_listen_sk+0x108/0x1b0 [ 76.208122] inet_listen+0x48/0x70 [ 76.208373] __sys_listen+0x74/0xb0 [ 76.208630] __x64_sys_listen+0x16/0x20 [ 76.208911] do_syscall_64+0x3f/0x90 [ 76.209174] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 ... Both ip_sock_set_tos() and inet_listen() calls lock_sock(sk) which caused a dead lock. To fix the issue, use sockopt_lock_sock() in ip_sock_set_tos() instead. sockopt_lock_sock() will avoid lock_sock() if it is in bpf context. Fixes: 878d951c6712 ("inet: lock the socket in ip_sock_set_tos()") Suggested-by: Martin KaFai Lau <martin.lau@kernel.org> Signed-off-by: Yonghong Song <yonghong.song@linux.dev> Reviewed-by: Eric Dumazet <edumazet@google.com> Link: https://lore.kernel.org/r/20231027182424.1444845-1-yonghong.song@linux.dev Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-10-27net: mana: Use xdp_set_features_flag instead of direct assignmentKonstantin Taranov1-2/+3
This patch uses a helper function for assignment of xdp_features. This change simplifies backports. Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com> Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Link: https://lore.kernel.org/r/1698430011-21562-1-git-send-email-haiyangz@microsoft.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-10-27vxlan: Cleanup IFLA_VXLAN_PORT_RANGE entry in vxlan_get_size()Benjamin Poirier1-2/+2
This patch is basically a followup to commit 4e4b1798cc90 ("vxlan: Add missing entries to vxlan_get_size()"). All of the attributes in vxlan_get_size() appear in the same order that they are filled in vxlan_fill_info() except for IFLA_VXLAN_PORT_RANGE. For consistency, move that entry to match its order and add a comment, like for all other entries. Signed-off-by: Benjamin Poirier <bpoirier@nvidia.com> Link: https://lore.kernel.org/r/20231027184410.236671-1-bpoirier@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-10-27iavf: delete the iavf client interfaceMichal Schmidt6-871/+1
The iavf client interface was added in 2017 by commit ed0e894de7c1 ("i40evf: add client interface"), but there have never been any in-tree callers. It's not useful for future development either. The Intel out-of-tree iavf and irdma drivers instead use an auxiliary bus, which is a better solution. Remove the iavf client interface code. Also gone are the client_task work and the client_lock mutex. Signed-off-by: Michal Schmidt <mschmidt@redhat.com> Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Link: https://lore.kernel.org/r/20231027175941.1340255-9-jacob.e.keller@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-10-27iavf: add a common function for undoing the interrupt schemeMichal Schmidt1-11/+15
Add a new function iavf_free_interrupt_scheme that does the inverse of iavf_init_interrupt_scheme. Symmetry is nice. And there will be three callers already. Signed-off-by: Michal Schmidt <mschmidt@redhat.com> Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com> Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Link: https://lore.kernel.org/r/20231027175941.1340255-8-jacob.e.keller@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-10-27iavf: use unregister_netdevMichal Schmidt1-3/+1
Use unregister_netdev, which takes rtnl_lock for us. We don't have to check the reg_state under rtnl_lock. There's nothing to race with. We have just cancelled the finish_config work. Signed-off-by: Michal Schmidt <mschmidt@redhat.com> Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com> Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Link: https://lore.kernel.org/r/20231027175941.1340255-7-jacob.e.keller@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-10-27iavf: rely on netdev's own registered stateMichal Schmidt2-7/+3
The information whether a netdev has been registered is already present in the netdev itself. There's no need for a driver flag with the same meaning. Signed-off-by: Michal Schmidt <mschmidt@redhat.com> Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com> Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Link: https://lore.kernel.org/r/20231027175941.1340255-6-jacob.e.keller@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-10-27iavf: fix the waiting time for initial resetMichal Schmidt1-1/+1
Every time I create VFs on ice, I receive at least one "Device is still in reset (-16), retrying" message per VF. It recovers fine, but typical usecases should not trigger scary-looking messages. The waiting for reset is too short. It makes no sense to check every 10 microseconds. Typical reset waiting times are at least tens of milliseconds and can be several seconds. I suspect the polling interval was meant to be 10 milliseconds all along. IAVF_RESET_WAIT_COMPLETE_COUNT is defined as 2000, so the total waiting time could be over 20 seconds. I have seen resets take 5 seconds (with 128 VFs on ice). The added benefit of not triggering the "Device is still in reset" path is that we avoid going through the __IAVF_INIT_FAILED state, which would take a full second before retrying. Signed-off-by: Michal Schmidt <mschmidt@redhat.com> Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com> Tested-by: Rafal Romanowski <rafal.romanowski@intel.com> Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Link: https://lore.kernel.org/r/20231027175941.1340255-5-jacob.e.keller@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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