A user can enable io accounting for passthrough requests, so export the
helper that checks if the request should be tracked. This will enable
stacking drivers to to report iostats for passthrough workloads. Since
the stacking request_queue may not be the one providing the request, the
API has to add a parameter for the caller to specify which one to check.
Reviewed-by: Nilay Shroff <nilay@linux.ibm.com>
Reviewed-by: Nitesh Shetty <nj.shetty@samsung.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://patch.msgid.link/20260528010041.1533124-2-kbusch@meta.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Add a helper that sets bi_status and call bio_endio() as that is a very
common pattern and convert the core block code over to it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Md Haris Iqbal <haris.iqbal@linux.dev>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@kernel.org>
Link: https://patch.msgid.link/20260528084632.2505277-1-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
The macros are impossible to follow due to the lack of visual type
information and all the braces. Replace them with inline helpers to
improve on that. Because the calling conventions are a bit problematic
with a lot of passing structures by value, all the helpers are marked
as __always_inline so that they are force inlined.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Caleb Sander Mateos <csander@purestorage.com>
Reviewed-by: Ming Lei <tom.leiming@gmail.com>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Link: https://patch.msgid.link/20260527151043.2349900-4-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Split the two init cases based on code in the zloop driver. This
simplifies the code and makes it easier to follow.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ming Lei <tom.leiming@gmail.com>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Link: https://patch.msgid.link/20260527151043.2349900-3-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Port over the changes from the zloop driver to remove the need for
the local bio, bvec and offset variables and clean up the code by
that.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ming Lei <tom.leiming@gmail.com>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Link: https://patch.msgid.link/20260527151043.2349900-2-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
ublk_start_cancel() previously bailed out early when ublk_get_disk()
returned NULL, treating it as "our disk has been dead". That is correct
for the post-teardown case, but it also wrongly covers the pre-start
case: ublk_ctrl_start_dev() has not assigned ub->ub_disk yet, while
io_uring is already tearing down the daemon's uring_cmds via
ublk_uring_cmd_cancel_fn().
In that window, the cancel path skips ublk_set_canceling(), so
ubq->canceling stays false, even though ublk_cancel_cmd() goes on to
NULL out every io->cmd. ublk_ctrl_start_dev() then proceeds to set
ub->ub_disk, call add_disk(), and schedule partition_scan_work. When
ublk_partition_scan_work() runs bdev_disk_changed() and the resulting
read reaches ublk_queue_rq() -> ublk_queue_cmd(), the ubq->canceling
check passes and the code dereferences the NULL io->cmd:
BUG: kernel NULL pointer dereference, address: 0000000000000018
RIP: ublk_queue_cmd drivers/block/ublk_drv.c [inline]
RIP: ublk_queue_rq+0x73/0x100
Call Trace:
blk_mq_dispatch_rq_list+0x1c5/0xca0
...
bdev_disk_changed+0x3d4/0x5e0
ublk_partition_scan_work+0x89/0xe0
process_one_work+0x344/0x8a0
Fix it by always setting ub->canceling / ubq->canceling under
cancel_mutex. When the disk is allocated, keep the existing
quiesce/unquiesce dance so the flag is observed across the
ublk_queue_rq() barrier. When the disk is not yet allocated, there is
no request_queue and ublk_queue_rq() cannot be running concurrently, so
simply flipping the flag is sufficient: any subsequent I/O - including
the partition scan started by ublk_ctrl_start_dev() - will see
canceling set and be aborted via __ublk_queue_rq_common().
Fixes: 7fc4da6a30 ("ublk: scan partition in async way")
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Link: https://patch.msgid.link/20260527144042.2095194-1-tom.leiming@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
tg_flush_bios() schedules pending_timer on the child tg's own
service_queue, which causes throtl_pending_timer_fn() to dispatch from
the child's pending_tree. For leaf cgroups this tree is empty, so the
timer fires and exits without dispatching the throttled bio.
The throttled bio sits in the parent's pending_tree with disptime set
to jiffies (THROTL_TG_CANCELING zeroes all dispatch times), but the
parent's timer is never explicitly rescheduled. The bio only gets
dispatched when the parent timer eventually fires at its previously
scheduled expiry.
Fix by calling throtl_schedule_next_dispatch(sq->parent_sq, true)
instead, matching what tg_set_limit() already does. This forces the
parent's dispatch cycle to run immediately and flush all canceling
bios without waiting for a stale timer.
For the device deletion path (blk_throtl_cancel_bios), directly
complete throttled bios with EIO via bio_io_error() instead of
dispatching them through the timer -> work -> submission chain.
This avoids a race with the SCSI state machine where bios can reach
the SCSI layer while the device is in SDEV_CANCEL state, causing
ENODEV instead of the expected EIO.
Reported-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Link: https://lore.kernel.org/all/ag2owaQQoigp_fSV@shinmob/
Signed-off-by: Tao Cui <cuitao@kylinos.cn>
Link: https://patch.msgid.link/20260522091530.1901437-1-cuitao@kylinos.cn
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Commit b040a1a452 ("block: switch numa_node to int in
blk_mq_hw_ctx and init_request") changed the type of the
`numa_node` argument of `blk_mq_ops::init_request` from
`unsigned int` to `int`. Update the Rust callback signature to
match, so that the function item can be coerced to the C fn
pointer type stored in `blk_mq_ops`.
Without this change the Rust block layer fails to build:
error[E0308]: mismatched types
--> rust/kernel/block/mq/operations.rs:274:28
|
274 | init_request: Some(Self::init_request_callback),
| ---- ^^^^^^^^^^^^^^^^^^^^^^^^^^^
| expected fn pointer, found fn item
|
= note: expected fn pointer
`unsafe extern "C" fn(_, _, _, i32) -> _`
found fn item
`unsafe extern "C" fn(_, _, _, u32) -> _ {...}`
The argument is unused on the Rust side, so this is a pure
type-signature change with no functional impact.
Fixes: b040a1a452 ("block: switch numa_node to int in blk_mq_hw_ctx and init_request")
Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
Reviewed-by: Gary Guo <gary@garyguo.net>
Link: https://patch.msgid.link/20260527-block-for-next-2026-05-26-2200-failure-v1-1-4865889e282c@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
check_partition() allocates a buffer to use as backing memory for
seq_buf.
This buffer can be allocated with kmalloc() as there's nothing special
about it to go directly to the page allocator.
kmalloc() provides a better API that does not require ugly casts and
kfree() does not need to know the size of the freed object.
For a single allocation on the cold path the performance difference between
kmalloc() and __get_free_pages() is not measurable as both allocators take
an object/page from a per-CPU list for fast path allocations.
For the slow path the performance is anyway determined by the amount of
reclaim involved rather than by what allocator is used.
Replace use of __get_free_page() with kmalloc() and free_page() with
kfree().
Link: https://lore.kernel.org/all/635405e4-9423-4a25-a6e7-e03c8ea0bcbe@redhat.com
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Link: https://patch.msgid.link/20260527-block-v2-1-8e06f914c484@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
NVMe multipath does not expose BLK_FEAT_PCI_P2PDMA on the head disk
even when all underlying controllers support it.
Set BLK_FEAT_PCI_P2PDMA unconditionally in nvme_mpath_alloc_disk()
alongside the other features. nvme_update_ns_info_block() already
calls queue_limits_stack_bdev() to stack each path's limits onto the
head disk, which routes through blk_stack_limits(). The core now
clears BLK_FEAT_PCI_P2PDMA automatically if any path (e.g., FC) does
not support it, consistent with how BLK_FEAT_NOWAIT and BLK_FEAT_POLL
are handled.
Tested-by: Pranjal Shrivastava <praan@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Nitesh Shetty <nj.shetty@samsung.com>
Signed-off-by: Kiran Kumar Modukuri <kmodukuri@nvidia.com>
Signed-off-by: Chaitanya Kulkarni <kch@nvidia.com>
Tested=by: Pranjal Shrivastava <praan@google.com>
Link: https://patch.msgid.link/20260513185153.95552-4-kch@nvidia.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
MD RAID does not propagate BLK_FEAT_PCI_P2PDMA from member devices to
the RAID device, preventing peer-to-peer DMA through the RAID layer even
when all underlying devices support it.
Enable BLK_FEAT_PCI_P2PDMA unconditionally in raid0, raid1 and raid10
personalities during queue limits setup. blk_stack_limits() clears it
automatically if any member device lacks support, consistent with how
BLK_FEAT_NOWAIT and BLK_FEAT_POLL are handled in the block core.
Parity RAID personalities (raid4/5/6) are excluded because they require
CPU access to data pages for parity computation, which is incompatible
with P2P mappings.
Tested with RAID0/1/10 arrays containing multiple NVMe devices with
P2PDMA support, confirming that peer-to-peer transfers work correctly
through the RAID layer.
Tested-by: Pranjal Shrivastava <praan@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Xiao Ni <xni@redhat.com>
Signed-off-by: Kiran Kumar Modukuri <kmodukuri@nvidia.com>
Signed-off-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Yu Kuai <yukuai@fygo.io>
Tested=by: Pranjal Shrivastava <praan@google.com>
Link: https://patch.msgid.link/20260513185153.95552-3-kch@nvidia.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
BLK_FEAT_NOWAIT and BLK_FEAT_POLL are cleared in blk_stack_limits()
when an underlying device does not support them. Apply the same
treatment to BLK_FEAT_PCI_P2PDMA: stacking drivers set it
unconditionally and rely on the core to clear it whenever a
non-supporting member device is stacked.
Tested-by: Pranjal Shrivastava <praan@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Nitesh Shetty <nj.shetty@samsung.com>
Signed-off-by: Chaitanya Kulkarni <kch@nvidia.com>
Tested=by: Pranjal Shrivastava <praan@google.com>
Link: https://patch.msgid.link/20260513185153.95552-2-kch@nvidia.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Remove blkdev_write_begin(), blkdev_write_end(), and their entries in
def_blk_aops. These have been unreachable since commit 487c607df7
("block: use iomap for writes to block devices") switched block device
buffered writes from generic_perform_write() to
iomap_file_buffered_write(), which bypasses aops->write_begin/end.
Signed-off-by: Tal Zussman <tz2294@columbia.edu>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://patch.msgid.link/20260525-blk-write-cleanup-v1-1-391c073e3831@columbia.edu
Signed-off-by: Jens Axboe <axboe@kernel.dk>
If service thread creation fails after device_add_disk() succeeds,
mtip_block_initialize() calls del_gendisk() and then falls through to
put_disk(). Since mtip32xx uses .free_disk to free struct driver_data,
put_disk() can release dd on the added-disk path.
The same unwind then continues to use dd for blk_mq_free_tag_set() and
mtip_hw_exit(), and mtip_pci_probe() can later free dd again. This can
cause a use-after-free and double free.
Track whether the disk was added in the current initialization call.
For the post-add service-thread failure path, remove the disk, release
the local hardware resources, and return without dropping the final disk
reference. The probe error path can then finish its cleanup and call
put_disk() after it is done using dd. Keep the pre-add path using
put_disk() before blk_mq_free_tag_set(), and clear dd->disk so the outer
probe cleanup frees dd directly.
Fixes: e8b58ef09e ("mtip32xx: fix device removal")
Signed-off-by: Yuho Choi <dbgh9129@gmail.com>
Link: https://patch.msgid.link/20260525162531.1406677-1-dbgh9129@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Commit abb30460bd ("block: mark bio_wouldblock_error() bio with
BIO_QUIET") added this to suppress buffer_head warnings, but neither
when this commit was added nor now any buffer_head using code actually
ever sets REQ_NOWAIT which can lead to BLK_STS_AGAIN.
Remove the special handling for now. If we ever plan to use REQ_NOWAIT
for buffer_head based I/O we're better off handling BLK_STS_AGAIN in
the completion handler as it actually needs to retry the I/O as well.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/20260518063336.507369-3-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
None of the file systems using the legacy direct I/O code actually sets
FMODE_NOWAIT, and if they did this would not work, as the write locking
could not handle the retry. Remove this dead code.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Christian Brauner <brauner@kernel.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Link: https://patch.msgid.link/20260518063336.507369-2-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
The bdev pseudo-filesystem is an internal kernel filesystem with which
userspace should not interfere. Unregister it so that userspace cannot
even attempt to mount it.
This fixes a bug [1] that occurs when attempting to access files,
because the system call move_mount() uses pointers declared in the
inode_operations structure, which for the bdev pseudo-filesystem
are always equal to 0. `inode->i_op = &empty_iops;`
[1]
BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0010) - not-present page
PGD 23380067 P4D 23380067 PUD 23381067 PMD 0
Oops: 0010 [#1] PREEMPT SMP KASAN NOPTI
CPU: 2 PID: 17125 Comm: syz-executor.0 Not tainted 6.1.155-syzkaller-00350-g84221fde2681 #0
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:0x0
Call Trace:
<TASK>
lookup_open.isra.0+0x700/0x1180 fs/namei.c:3460
open_last_lookups fs/namei.c:3550 [inline]
path_openat+0x953/0x2700 fs/namei.c:3780
do_filp_open+0x1c5/0x410 fs/namei.c:3810
do_sys_openat2+0x171/0x4d0 fs/open.c:1318
do_sys_open fs/open.c:1334 [inline]
__do_sys_openat fs/open.c:1350 [inline]
__se_sys_openat fs/open.c:1345 [inline]
__x64_sys_openat+0x13c/0x1f0 fs/open.c:1345
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x35/0x80 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x6e/0xd8
Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Link: https://lore.kernel.org/all/20131010004732.GJ13318@ZenIV.linux.org.uk/T/#
Cc: stable@vger.kernel.org
Signed-off-by: Denis Arefev <arefev@swemel.ru>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://patch.msgid.link/20260521072857.5078-1-arefev@swemel.ru
Signed-off-by: Jens Axboe <axboe@kernel.dk>
bdev_mark_dead()'s @surprise == true means the device is already gone.
The filesystem callback fs_bdev_mark_dead() honours this and skips
sync_filesystem(), but the bare block device path (no ->mark_dead op)
lost its !surprise guard when the holder ->mark_dead callback was wired
up (see Fixes), and now calls sync_blockdev() unconditionally, which can
hang forever waiting on writeback that can no longer complete.
syzkaller hit this via nvme_reset_work()'s "I/O queues lost" path:
nvme_mark_namespaces_dead() -> blk_mark_disk_dead() ->
bdev_mark_dead(bdev, true) -> sync_blockdev() blocks in
folio_wait_writeback(), wedging the reset worker and every task waiting
on it.
Skip the sync on surprise removal, matching fs_bdev_mark_dead();
invalidate_bdev() still runs. Orderly removal (surprise == false) is
unchanged.
Found by FuzzNvme(Syzkaller with FEMU fuzzing framework).
Fixes: d8530de5a6 ("block: call into the file system for bdev_mark_dead")
Acked-by: Sungwoo Kim <iam@sung-woo.kim>
Acked-by: Dave Tian <daveti@purdue.edu>
Acked-by: Weidong Zhu <weizhu@fiu.edu>
Signed-off-by: Chao Shi <coshi036@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://patch.msgid.link/20260522220025.1770388-1-coshi036@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
In high-performance storage environments, particularly when utilising
RAID controllers with shared tag sets (BLK_MQ_F_TAG_HCTX_SHARED), severe
latency spikes can occur when fast devices (SSDs) are starved of hardware
tags when sharing the same blk_mq_tag_set.
Currently, diagnosing this specific hardware queue contention is
difficult. When a CPU thread exhausts the tag pool, blk_mq_get_tag()
forces the current thread to block uninterruptible via io_schedule().
While this can be inferred via sched:sched_switch or dynamically
traced by attaching a kprobe to blk_mq_mark_tag_wait(), there is no
dedicated, out-of-the-box observability for this event.
This patch introduces the block_rq_tag_wait tracepoint in the tag
allocation slow-path. It triggers immediately before the task state
is altered to TASK_UNINTERRUPTIBLE (ensuring safety for PREEMPT_RT
locks). It exposes the exact hardware context (hctx) that is starved,
the specific pool experiencing starvation (driver, software scheduler,
or reserved), and the exact pool depth.
This provides storage engineers with a zero-configuration, low-overhead
mechanism to definitively identify shared-tag bottlenecks. For example,
userspace can trivially replicate tag starvation counters using bpftrace:
# bpftrace -e 'tracepoint:block:block_rq_tag_wait { @tag_waits[cpu] = count(); }'
Attaching 1 probe...
^C
@tag_waits[4]: 12
@tag_waits[12]: 87
Signed-off-by: Aaron Tomlin <atomlin@atomlin.com>
Link: https://patch.msgid.link/20260525005123.722277-1-atomlin@atomlin.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
of_partition() calls of_node_get() on the parent device node at the
beginning of the function, storing the reference in 'partitions_np'.
This reference is leaked in two paths:
1. The compatibility check at the top of the function returns 0
without releasing partitions_np when the node exists but is not
"fixed-partitions" compatible.
2. The function returns 1 at the end after successfully processing
all partitions without releasing partitions_np.
Fix both leaks by adding of_node_put(partitions_np) on each path.
Fixes: 2e3a191e89 ("block: add support for partition table defined in OF")
Cc: stable@vger.kernel.org
Signed-off-by: Wentao Liang <vulab@iscas.ac.cn>
Reviewed-by: Md Haris Iqbal <haris.iqbal@linux.dev>
Link: https://patch.msgid.link/20260526102124.2283846-1-vulab@iscas.ac.cn
Signed-off-by: Jens Axboe <axboe@kernel.dk>
The code for initializing struct ublksrv_io_desc on I/O dispatch is
largely duplicated in 3 places. Commit 4d4a512a1f ("ublk: add PFN-
based buffer matching in I/O path") added support to ublk_setup_iod()
for matching request buffers against registered UBLK_F_SHMEM_ZC buffers,
but missed adding it to ublk_setup_iod_zoned() for zoned requests. Move
the duplicated logic to a new helper ublk_init_iod(). This way, zone
appends can also benefit from avoiding the data copy.
Signed-off-by: Caleb Sander Mateos <csander@purestorage.com>
Reviewed-by: Ming Lei <tom.leiming@gmail.com>
Link: https://patch.msgid.link/20260520203654.1413640-3-csander@purestorage.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Move ublk_req_build_flags() above its callers so it doesn't need to be
forward-declared.
Signed-off-by: Caleb Sander Mateos <csander@purestorage.com>
Reviewed-by: Ming Lei <tom.leiming@gmail.com>
Link: https://patch.msgid.link/20260520203654.1413640-2-csander@purestorage.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
ublk_rq_has_data() currently uses bio_has_data(), which involves 2
indirections and several branches. Use blk_rq_has_data() instead to save
an indirection and NULL check.
Signed-off-by: Caleb Sander Mateos <csander@purestorage.com>
Reviewed-by: Ming Lei <tom.leiming@gmail.com>
Link: https://patch.msgid.link/20260513211846.1956810-3-csander@purestorage.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Add blk_rq_has_data(), an analogue of bio_has_data() for struct request.
This skips one dereference relative to bio_has_data(rq->bio).
Signed-off-by: Caleb Sander Mateos <csander@purestorage.com>
Reviewed-by: Ming Lei <tom.leiming@gmail.com>
Link: https://patch.msgid.link/20260513211846.1956810-2-csander@purestorage.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Commit b1798910fc7f ("drbd: move UAPI headers to include/uapi/linux/")
broke compilation on targets without a hosted libc:
./usr/include/linux/drbd.h:18:10: fatal error: sys/types.h: No such
file or directory
The underlying issue is that there were some constructs left over in
those headers that don't belong in uapi.
Drop the __KERNEL__-gated split in drbd.h. The !__KERNEL__ branch pulls
in <sys/types.h>, <sys/wait.h> and <limits.h> for symbols that the
header does not actually reference; they were carried over from when
this lived in include/linux/.
Replace <asm/types.h> and the entire #ifdef block with the standard
UAPI combo <linux/types.h> + <asm/byteorder.h>, which provides
__u32/__u64/__s32 and __{LITTLE,BIG}_ENDIAN_BITFIELD in both kernel
and userspace contexts.
drbd_limits.h references some enum values and the DRBD_PROT_C define
from drbd.h, but does not include it. Add the missing include while
we're here.
Drop the unprefixed DEBUG_RANGE_CHECK from drbd_limits.h. It has no
in-kernel users and pollutes the userspace namespace.
Switch the drbd.h and drbd_limits.h include guards to the _UAPI_LINUX_*
convention already used by drbd_genl.h.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202605101346.V2wwJqv1-lkp@intel.com/
Fixes: b1798910fc7f ("drbd: move UAPI headers to include/uapi/linux/")
Signed-off-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com>
Link: https://patch.msgid.link/20260513110343.3170338-1-christoph.boehmwalder@linbit.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Replace the genl_magic multi-include macro system with explicit
serialization and parsing.
The *_gen files were initially produced from a YNL spec via a
customized ynl-gen-c, but the DRBD netlink family is effectively
frozen, so the generator is kept unmodified.
All new functionality will land in a separate, properly-designed
family.
Carry the resulting code as ordinary in-tree source rather than
landing the spec and generator changes that produced it.
The bulk of the changes are mechanical renames to fit the YNL naming
conventions:
- Handler functions: drbd_adm_* -> drbd_nl_*_doit/dumpit
- GENL_MAGIC_VERSION -> DRBD_FAMILY_VERSION
- GENL_MAGIC_FAMILY_HDRSZ -> sizeof(struct drbd_genlmsghdr)
- drbd_genl_family -> drbd_nl_family
- Attribute IDs: T_* -> DRBD_A_*
Remove the nested_attr_tb static global buffer and move to a per-call
allocation approach: each deserialization manages its own nested
attribute table. This will be needed anyway when we eventually move
to parallel_ops, and it's actually simpler this way, so make the
move now.
Replace the functionality of the "sensitive" flag: this was only used
by a single field (shared_secret); open-code redaction logic for that
locally.
Also replace the "invariant" flag: this only had a couple of users,
and those basically never change. Hard code the check directly inline.
The genl_family struct itself is defined manually in drbd_nl.c.
Also replace a couple of drbd-specific wrappers (nla_put_u64_0pad,
drbd_nla_find_nested) with standard kernel functions while we're at
it.
Finally, completely remove the genl_magic system; DRBD was its only
user.
Signed-off-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Link: https://patch.msgid.link/20260506124541.1951772-3-christoph.boehmwalder@linbit.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
drbd.h and drbd_limits.h contain only type definitions, enums, and
constants shared between kernel and userspace. These should be part of
UAPI.
Split the genl_api header into two: the genlmsghdr and the enums are
UAPI, the rest stays there for now (it will be removed by one of the
next commits in this series).
drbd_config.h is clearly DRBD-internal, so move it there.
Signed-off-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Link: https://patch.msgid.link/20260506124541.1951772-2-christoph.boehmwalder@linbit.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
- sh: Fix fallout from ZERO_PAGE consolidation
-----BEGIN PGP SIGNATURE-----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=6ywF
-----END PGP SIGNATURE-----
Merge tag 'sh-for-v7.1-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux
Pull sh fix from John Paul Adrian Glaubitz:
"The ZERO_PAGE consolidation in v7.1, introduced a regression on sh
which made these systems unbootable.
The problem was that on sh, the initial boot parameters were
previously referenced as an array and after 6215d9f447 ("arch, mm:
consolidate empty_zero_page"), they were referenced as a pointer which
caused wrong code generation and boot hang.
This changes the declaration back to being an array which fixes the
boot hang"
* tag 'sh-for-v7.1-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux:
sh: Fix fallout from ZERO_PAGE consolidation
-----BEGIN PGP SIGNATURE-----
iQFPBAABCAA5FiEEe7vIQRWZI0iWSE3xu+CwddJFiJoFAmn3BZgbFIAAAAAABAAO
bWFudTIsMi41KzEuMTIsMiwyAAoJELvgsHXSRYiabzcIAIDyPybWZ/bRup/KfWGE
GknYLaUA3nw9ZpZQdQ0cJ+jGO6pfoUqacO0cZ/5ppdcXblKz22AFItUnpsd44M9H
92QjwNJoT6vjgzaSWCDE/6TeE0y27HjyhBlIYjs9mTRTb8sIH+mzfDS58FZponb/
RZMGmcJvS4La+VzaetAxzyx+cX7J9W/7zDfvz/qPMpm8tysGe4z8H7/54c5x/U+c
NvuEXaxPaKEa62x5e+IFG6G67NszbJnfRrLGn/UMwp+SS5WUId6D9kmjtT70yJlg
hbdU6zw6kI+DIPxRidnpI/iJqcA08r9UuC/TrZwcjaM6sythev5UvOxZXMRVp19w
qXU=
=yAe1
-----END PGP SIGNATURE-----
Merge tag 'slab-for-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab
Pull slab fixes from Vlastimil Babka:
- Stable fixes for CONFIG_SMP=n where _nolock() allocations in NMI both
at kmalloc and page allocator levels are not properly protected by
the spin_trylock() semantics on !SMP (Harry Yoo)
* tag 'slab-for-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab:
mm/slab: return NULL early from kmalloc_nolock() in NMI on UP
mm/page_alloc: return NULL early from alloc_frozen_pages_nolock() in NMI on UP
by Sebastian Andrzej Siewior.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
-----BEGIN PGP SIGNATURE-----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=HUBJ
-----END PGP SIGNATURE-----
Merge tag 'locking-urgent-2026-05-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fix from Ingo Molnar:
"Fix lockup in requeue-PI during signal/timeout wakeups, by Sebastian
Andrzej Siewior"
* tag 'locking-urgent-2026-05-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
futex: Prevent lockup in requeue-PI during signal/ timeout wakeup
- Fix the delayed dequeue negative lag increase fix in the
fair scheduler (Peter Zijlstra)
- Fix wakeup_preempt_fair() to do proper delayed dequeue
(Vincent Guittot)
- Clear sched_entity::rel_deadline when initializing
forked entities, which bug can cause all tasks to be
EEVDF-ineligible, causing a NULL pointer dereference
crash in pick_next_entity() (Zicheng Qu)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
-----BEGIN PGP SIGNATURE-----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=z+8E
-----END PGP SIGNATURE-----
Merge tag 'sched-urgent-2026-05-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar:
- Fix the delayed dequeue negative lag increase fix in the
fair scheduler (Peter Zijlstra)
- Fix wakeup_preempt_fair() to do proper delayed dequeue
(Vincent Guittot)
- Clear sched_entity::rel_deadline when initializing
forked entities, which bug can cause all tasks to be
EEVDF-ineligible, causing a NULL pointer dereference
crash in pick_next_entity() (Zicheng Qu)
* tag 'sched-urgent-2026-05-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/fair: Clear rel_deadline when initializing forked entities
sched/fair: Fix wakeup_preempt_fair() vs delayed dequeue
sched/fair: Fix the negative lag increase fix
Consolidation of empty_zero_page declarations broke boot on sh.
sh stores its initial boot parameters in a page reserved in
arch/sh/kernel/head_32.S. Before commit 6215d9f447 ("arch, mm:
consolidate empty_zero_page") this page was referenced in C code
as an array and after that commit it is referenced as a pointer.
This causes wrong code generation and boot hang.
Declare boot_params_page as an array to fix the issue.
Reported-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Tested-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Fixes: 6215d9f447 ("arch, mm: consolidate empty_zero_page")
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Artur Rojek <contact@artur-rojek.eu>
Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
- Reject algorithms with authsizes that are too short in authencesn.
-----BEGIN PGP SIGNATURE-----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=Runs
-----END PGP SIGNATURE-----
Merge tag 'v7.1-p3' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fix from Herbert Xu:
- Reject algorithms with authsizes that are too short in authencesn
* tag 'v7.1-p3' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: authencesn - reject short ahash digests during instance creation
- Fix a NULL pointer dereference in ntfs_index_walk_down() by validating
index block allocation.
- Fix a memory leak of the symlink target string in
ntfs_reparse_set_wsl_symlink() during error paths.
- Prevent VCN overflow and validate lowest_vcn in
ntfs_mapping_pairs_decompress() to avoid runlist corruption.
- Fix a page reference leak in ntfs_write_iomap_end_resident() when
attribute search context allocation fails.
- Fix an invalid PTR_ERR() usage on a valid folio pointer in
__ntfs_bitmap_set_bits_in_run().
- Correct directory link counting by dropping nlink only when the MFT
record link count reaches zero for WIN32/DOS aliases.
- Fix an uninitialized variable usage in ntfs_mapping_pairs_decompress()
by returning an error pointer directly.
-----BEGIN PGP SIGNATURE-----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=MosZ
-----END PGP SIGNATURE-----
Merge tag 'ntfs-for-7.1-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/ntfs
Pull ntfs fixes from Namjae Jeon:
- Fix a NULL pointer dereference in ntfs_index_walk_down() by
validating index block allocation
- Fix a memory leak of the symlink target string in
ntfs_reparse_set_wsl_symlink() during error paths
- Prevent VCN overflow and validate lowest_vcn in
ntfs_mapping_pairs_decompress() to avoid runlist corruption
- Fix a page reference leak in ntfs_write_iomap_end_resident()
when attribute search context allocation fails
- Fix an invalid PTR_ERR() usage on a valid folio pointer in
__ntfs_bitmap_set_bits_in_run()
- Correct directory link counting by dropping nlink only when
the MFT record link count reaches zero for WIN32/DOS aliases
- Fix an uninitialized variable in ntfs_mapping_pairs_decompress()
by returning an error pointer directly
* tag 'ntfs-for-7.1-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/ntfs:
ntfs: Use return instead of goto in ntfs_mapping_pairs_decompress()
ntfs: drop nlink once for WIN32/DOS aliases
ntfs: fix invalid PTR_ERR() usage in __ntfs_bitmap_set_bits_in_run()
ntfs: fix error handling in ntfs_write_iomap_end_resident()
ntfs: fix VCN overflow in ntfs_mapping_pairs_decompress()
ntfs: fix WSL symlink target leak on reparse failure
ntfs: fix NULL dereference in ntfs_index_walk_down()
core and helpers:
- calculate framebuffer geometry with format helpers
- fix docs
amdgpu:
- GFX12 fix for CONFIG_DRM_DEBUG_MM configs
- Fix DC analog support
- Userq fixes
- GART placement fix
- Aldebaran SMU fixes
- AMDGPU_INFO_READ_MMR_REG fix
- UVD 3.1 fix
- GC 6 TCC fix
- Fix root reservation in amdgpu_vm_handle_fault()
- RAS fix
- Module reload fix for APUs
- Fix build for CONFIG_DRM_FBDEV_EMULATION=n
- IGT DWB regression fix
- GC 11.5.4 fix
- VCN user fence fixes
- JPEG user fence fixes
- SMU 13.0.6 fix
- VCN 3/4 IB parser fixes
- NV3x+ dGPU vblank fix
- DCE6/8 fixes for LVDS/eDP panels without an EDID
amdkfd:
- Fix for when CONFIG_HSA_AMD is not set
- SVM fixes
xe:
- uapi: Add missing pad and extensions check
- uapi: Reject unsafe PAT indices for CPU cached memory
- Drop registration of guc_submit_wedged_fini from xe_guc_submit_wedge
- Xe3p tuning and workaround fixes
- USE drm mm instead of drm SA for CCS read/write
- Fix leaks and null derefs
- Fix Wa_18022495364
appletbdrm:
- allocate protocol buffers with kvzalloc()
dma-buf:
- fix docs
imagination:
- avoid segfault in debugfs
ofdrm:
- put PCI device reference on errors
udl:
- increase USB timeout
-----BEGIN PGP SIGNATURE-----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=wagp
-----END PGP SIGNATURE-----
Merge tag 'drm-fixes-2026-05-02' of https://gitlab.freedesktop.org/drm/kernel
Pull drm fixes from Dave Airlie:
"Fixes for rc2, the usual amdgpu/xe double header, I think xe had a
couple of weeks combined due to some maintainer access issues,
otherwise there's just a few misc fixes and documentation fixups.
core and helpers:
- calculate framebuffer geometry with format helpers
- fix docs
amdgpu:
- GFX12 fix for CONFIG_DRM_DEBUG_MM configs
- Fix DC analog support
- Userq fixes
- GART placement fix
- Aldebaran SMU fixes
- AMDGPU_INFO_READ_MMR_REG fix
- UVD 3.1 fix
- GC 6 TCC fix
- Fix root reservation in amdgpu_vm_handle_fault()
- RAS fix
- Module reload fix for APUs
- Fix build for CONFIG_DRM_FBDEV_EMULATION=n
- IGT DWB regression fix
- GC 11.5.4 fix
- VCN user fence fixes
- JPEG user fence fixes
- SMU 13.0.6 fix
- VCN 3/4 IB parser fixes
- NV3x+ dGPU vblank fix
- DCE6/8 fixes for LVDS/eDP panels without an EDID
amdkfd:
- Fix for when CONFIG_HSA_AMD is not set
- SVM fixes
xe:
- uapi: Add missing pad and extensions check
- uapi: Reject unsafe PAT indices for CPU cached memory
- Drop registration of guc_submit_wedged_fini from xe_guc_submit_wedge
- Xe3p tuning and workaround fixes
- USE drm mm instead of drm SA for CCS read/write
- Fix leaks and null derefs
- Fix Wa_18022495364
appletbdrm:
- allocate protocol buffers with kvzalloc()
dma-buf:
- fix docs
imagination:
- avoid segfault in debugfs
ofdrm:
- put PCI device reference on errors
udl:
- increase USB timeout"
* tag 'drm-fixes-2026-05-02' of https://gitlab.freedesktop.org/drm/kernel: (77 commits)
drm/xe/uapi: Reject coh_none PAT index for CPU_ADDR_MIRROR
drm/xe/uapi: Reject coh_none PAT index for CPU cached memory in madvise
drm/xe/xelp: Fix Wa_18022495364
drm/xe/gsc: Fix BO leak on error in query_compatibility_version()
drm/xe/eustall: Fix drm_dev_put called before stream disable in close
drm/xe: Fix error cleanup in xe_exec_queue_create_ioctl()
drm/xe: Fix dma-buf attachment leak in xe_gem_prime_import()
drm/xe: Fix bo leak in xe_dma_buf_init_obj() on allocation failure
drm/xe/bo: Fix bo leak on GGTT flag validation in xe_bo_init_locked()
drm/xe/bo: Fix bo leak on unaligned size validation in xe_bo_init_locked()
drm/xe: Fix potential NULL deref in xe_exec_queue_tlb_inval_last_fence_put_unlocked
drm/xe/vf: Use drm mm instead of drm sa for CCS read/write
drm/xe: Add memory pool with shadow support
drm/xe/debugfs: Correct printing of register whitelist ranges
drm/xe: Mark ROW_CHICKEN5 as a masked register
drm/xe/tuning: Use proper register offset for GAMSTLB_CTRL
drm/xe/xe3p_lpg: Add missing indirect ring state feature flag
drm/xe: Drop redundant rtp entries for Wa_14019988906 & Wa_14019877138
drm/xe/vm: Add missing pad and extensions check
drm/xe: Drop registration of guc_submit_wedged_fini from xe_guc_submit_wedge()
...
- Avoid writing an uninitialised stack variable to POR_EL0 on
sigreturn if the poe_context record is absent
- Reserve one more page for the early 4K-page kernel mapping to cover
the extra [_text, _stext) split introduced by the non-executable
read-only mapping
- Force the arch_local_irq_*() wrappers to be __always_inline so that
noinstr entry and idle paths cannot call out-of-line, instrumentable
copies
- Fix potential sign extension in the arm64 SCS unwinder's DWARF
advance_loc4 decoding
- Tolerate arm64 ACPI platforms with only WFI and no deeper PSCI idle
states, restoring cpuidle registration on such systems
- Include the UAPI <asm/ptrace.h> header in the arm64 GCS libc test
rather than carrying a duplicate struct user_gcs definition (the
original #ifdef NT_ARM_GCS was wrong to cover the structure
definition as it would be masked out if the toolchain defined it)
-----BEGIN PGP SIGNATURE-----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=a9er
-----END PGP SIGNATURE-----
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- Avoid writing an uninitialised stack variable to POR_EL0 on sigreturn
if the poe_context record is absent
- Reserve one more page for the early 4K-page kernel mapping to cover
the extra [_text, _stext) split introduced by the non-executable
read-only mapping
- Force the arch_local_irq_*() wrappers to be __always_inline so that
noinstr entry and idle paths cannot call out-of-line, instrumentable
copies
- Fix potential sign extension in the arm64 SCS unwinder's DWARF
advance_loc4 decoding
- Tolerate arm64 ACPI platforms with only WFI and no deeper PSCI idle
states, restoring cpuidle registration on such systems
- Include the UAPI <asm/ptrace.h> header in the arm64 GCS libc test
rather than carrying a duplicate struct user_gcs definition (the
original #ifdef NT_ARM_GCS was wrong to cover the structure
definition as it would be masked out if the toolchain defined it)
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: signal: Preserve POR_EL0 if poe_context is missing
arm64: Reserve an extra page for early kernel mapping
kselftest/arm64: Include <asm/ptrace.h> for user_gcs definition
ACPI: arm64: cpuidle: Tolerate platforms with no deep PSCI idle states
arm64/irqflags: __always_inline the arch_local_irq_*() helpers
arm64/scs: Fix potential sign extension issue of advance_loc4
-----BEGIN PGP SIGNATURE-----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=/qwt
-----END PGP SIGNATURE-----
Merge tag 'selinux-pr-20260501' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux
Pull selinux fixes from Paul Moore:
- Ensure SELinux is always properly accessing its own sock LSM state
- Only reserve an xattr slot for SELinux if it will be used
- Fix a SELinux auditing regression in the directory avdcache
* tag 'selinux-pr-20260501' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
selinux: fix avdcache auditing
selinux: don't reserve xattr slot when we won't fill it
selinux: use sk blob accessor in socket permission helpers
Currently need_futex_hash_allocate_default() depends on strict pthread
semantics, abusing CLONE_THREAD. This breaks the non-concurrency
assumptions when doing the mm->futex_ref pcpu allocations, leading to
bugs[0] when sharing the mm in other ways; ie:
BUG: KASAN: slab-use-after-free in futex_hash_put
... where the +1 bias can end up on a percpu counter that mm->futex_ref
no longer points at.
Loosen the check to cover any CLONE_VM clone, except vfork(). Excluding
vfork keeps the existing paths untouched (no overhead), and we can't
race in the first place: either the parent is suspended and the child
runs alone, or mm->futex_ref is already allocated from an earlier
CLONE_VM.
Link: https://lore.kernel.org/all/CAL_bE8LsmCQ-FAtYDuwbJhOkt9p2wwYQwAbMh=PifC=VsiBM6A@mail.gmail.com/ [0]
Fixes: d9b05321e2 ("futex: Move futex_hash_free() back to __mmput()")
Reported-by: Yiming Qian <yimingqian591@gmail.com>
Signed-off-by: Davidlohr Bueso <dave@stgolabs.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
- Reject zero-length writes from userspace that corrupt
Debug Facility buffers
- Replace one s390 PCI maintainer
- Remove SCLP_OFB Kconfig option and enable the guarded code
unconditionally
- Replace incorrect use of phys_to_folio() to virt_to_folio()
in do_secure_storage_access()
-----BEGIN PGP SIGNATURE-----
iI0EABYKADUWIQQrtrZiYVkVzKQcYivNdxKlNrRb8AUCafTJpBccYWdvcmRlZXZA
bGludXguaWJtLmNvbQAKCRDNdxKlNrRb8OEgAQDsVJ448e9YY4j5e+zk5Q3m1Eag
q5SIntMSb7r7df0AiAEAuiiNQWQMeDjPYpuOOS2SVp0qj2bf3y6RlHgD0sb1OAs=
=UkrI
-----END PGP SIGNATURE-----
Merge tag 's390-7.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Alexander Gordeev:
- Reject zero-length writes from userspace that corrupt Debug Facility
buffers
- Replace one s390 PCI maintainer
- Remove SCLP_OFB Kconfig option and enable the guarded code
unconditionally
- Replace incorrect use of phys_to_folio() to virt_to_folio() in
do_secure_storage_access()
* tag 's390-7.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/mm: Fix phys_to_folio() usage in do_secure_storage_access()
s390/sclp: Remove SCLP_OFB Kconfig option
MAINTAINERS: Replace one of the maintainers for s390/pci
s390/debug: Reject zero-length input in debug_input_flush_fn()
s390/debug: Reject zero-length input before trimming a newline
-----BEGIN PGP SIGNATURE-----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=5d8D
-----END PGP SIGNATURE-----
Merge tag 'io_uring-7.1-20260430' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull io_uring fixes from Jens Axboe:
- Remove dead struct io_buffer_list member
- Fix for incrementally consumed buffers with recvmsg multishot, which
requires a minimum value left in a buffer for any receive for the
headers. If there's still a bit of buffer left but it's smaller than
that value, then userspace will see a spurious -EFAULT returned in
the CQE
- Locking fix for the DEFER_TASKRUN retry list, which otherwise could
race with fallback cancelations. If the task is exiting with
task_work left in both the normal and retry list AND the exit cleanup
races with the task running task work, then entries could either be
doubly completed or lost
- Cap NAPI busy poll timeout to something sane, to avoid syzbot running
into excessive polling and triggering warnings around that
* tag 'io_uring-7.1-20260430' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
io_uring/tw: serialize ctx->retry_llist with ->uring_lock
io_uring/napi: cap busy_poll_to 10 msec
io_uring/kbuf: support min length left for incremental buffers
io_uring/kbuf: kill dead struct io_buffer_list 'nr_entries' member
