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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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W=1 builds now warn if module is built without a MODULE_DESCRIPTION().
Acked-by: Willem de Bruijn <willemb@google.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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W=1 builds now warn if module is built without a MODULE_DESCRIPTION().
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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W=1 builds now warn if module is built without a MODULE_DESCRIPTION().
Reviewed-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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W=1 builds now warn if module is built without a MODULE_DESCRIPTION().
Fill it in for the modules I maintain.
Acked-by: Kalle Valo <kvalo@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Both cros host command and irq disable were moved to suspend
prepare stage from late suspend recently. This is causing EC
to report MKBP event timeouts during suspend stress testing.
When the MKBP event timeouts happen during suspend, subsequent
wakeup of AP by EC using MKBP doesn't happen properly. Move the
irq disabling part back to late suspend stage which is a general
suggestion from the suspend kernel documentaiton to do irq
disable as late as possible.
Fixes: 4b9abbc132b8 ("platform/chrome: cros_ec_lpc: Move host command to prepare/complete")
Signed-off-by: Lalith Rajendran <lalithkraj@chromium.org>
Link: https://lore.kernel.org/r/20231027160221.v4.1.I1725c3ed27eb7cd9836904e49e8bfa9fb0200a97@changeid
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk fixes from Stephen Boyd:
"Three fixes, one for the clk framework and two for clk drivers:
- Avoid an oops in possible_parent_show() by checking for no parent
properly when a DT index based lookup is used
- Handle errors returned from divider_ro_round_rate() in
clk_stm32_composite_determine_rate()
- Fix clk_ops::determine_rate() implementation of socfpga's
gateclk_ops that was ruining uart output because the divider
was forgotten about"
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: stm32: Fix a signedness issue in clk_stm32_composite_determine_rate()
clk: Sanitize possible_parent_show to Handle Return Value of of_clk_get_parent_name
clk: socfpga: gate: Account for the divider in determine_rate
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Pull misc filesystem fixes from Al Viro:
"Assorted fixes all over the place: literally nothing in common, could
have been three separate pull requests.
All are simple regression fixes, but not for anything from this cycle"
* tag 'pull-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
ceph_wait_on_conflict_unlink(): grab reference before dropping ->d_lock
io_uring: kiocb_done() should *not* trust ->ki_pos if ->{read,write}_iter() failed
sparc32: fix a braino in fault handling in csum_and_copy_..._user()
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The clk gate kunit test checks that the implementation of the basic clk
gate reads and writes the proper bits in an MMIO register. The
implementation of the basic clk gate type uses writel() and readl()
which operate on little-endian registers. This test fails on big-endian
CPUs because the clk gate implementation writes to 'fake_reg' with
writel(), which converts the value to be written to little-endian before
storing the value in the fake register. When the test checks the bits in
the fake register on a big-endian machine it falsely assumes the format
of the register is also big-endian, when it is really always
little-endian. Suffice to say things don't work very well.
Mark 'fake_reg' as __le32 and push through endian accessor fixes
wherever the value is inspected to make this test endian agnostic.
There's a CLK_GATE_BIG_ENDIAN flag for big-endian MMIO devices, which
this test isn't using. A follow-up patch will test with and without that
flag.
Reported-by: Boqun Feng <boqun.feng@gmail.com>
Closes: https://lore.kernel.org/r/ZTLH5o0GlFBYsAHq@boqun-archlinux
Tested-by: Boqun Feng <boqun.feng@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Link: https://lore.kernel.org/r/20231027225821.95833-1-sboyd@kernel.org
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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>
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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>
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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>
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Pull io_uring fixes from Jens Axboe:
"Fix for an issue reported where reading fdinfo could find a NULL
thread as we didn't properly synchronize, and then a disable for the
IOCB_DIO_CALLER_COMP optimization as a recent reported highlighted how
that could lead to deadlocks if the task issued async O_DIRECT writes
and then proceeded to do sync fallocate() calls"
* tag 'io_uring-6.6-2023-10-27' of git://git.kernel.dk/linux:
io_uring/rw: disable IOCB_DIO_CALLER_COMP
io_uring/fdinfo: lock SQ thread while retrieving thread cpu/pid
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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>
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Pull block fix from Jens Axboe:
"Just a single fix for a potential divide-by-zero, introduced in this
cycle"
* tag 'block-6.6-2023-10-27' of git://git.kernel.dk/linux:
blk-throttle: check for overflow in calculate_bytes_allowed
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git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata
Pull ATA fix from Damien Le Moal:
"A single patch to fix a regression introduced by the recent
suspend/resume fixes.
The regression is that ATA disks are not stopped on system shutdown,
which is not recommended and increases the disks SMART counters for
unclean power off events.
This patch fixes this by refining the recent rework of the scsi device
manage_xxx flags"
* tag 'ata-6.6-final' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata:
scsi: sd: Introduce manage_shutdown device flag
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git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver fix from Hans de Goede:
"A single patch to extend the AMD PMC driver DMI quirk list
for laptops which need special handling to avoid NVME s2idle
suspend/resume errors"
* tag 'platform-drivers-x86-v6.6-6' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86:
platform/x86: Add s2idle quirk for more Lenovo laptops
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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>
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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>
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