Commit 64cfca85ba asserts the only valid return values for
nfs2/3_decode_dirent should not include -ENAMETOOLONG, but for a server
that sends a filename3 which exceeds MAXNAMELEN in a READDIR response the
client's behavior will be to endlessly retry the operation.
We could map -ENAMETOOLONG into -EBADCOOKIE, but that would produce
truncated listings without any error. The client should return an error
for this case to clearly assert that the server implementation must be
corrected.
Fixes: 64cfca85ba ("NFS: Return valid errors from nfs2/3_decode_dirent()")
Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
After receiving the location(s) of the DS server(s) in the
GETDEVINCEINFO, create the request for the clientid to such
server and indicate that the client is connecting to a DS.
Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Ensure that the connect timeout for the pNFS flexfiles driver is of the
same order as the I/O timeout, so that we can fail over quickly when
trying to read from a data server that is down.
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
If the caller specifies the connect timeouts in the arguments to
rpc_clnt_add_xprt(), then we shouldn't override them.
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
When we create a TCP transport, the connect timeout parameters are
currently fixed to be 90s. This is problematic in the pNFS flexfiles
case, where we may have multiple mirrors, and we would like to fail over
quickly to the next mirror if a data server is down.
This patch adds the ability to specify the connection parameters at RPC
client creation time.
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Instead of requiring the requests to redrive the connection several
times, just let the TCP connect code manage it now that we've adjusted
the TCP_SYNCNT value.
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Set the TCP SYN count so that we abort the connection attempt at around
the expected timeout value.
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
We must ensure that the subrequests are joined back into the head before
we can retransmit a request. If the head was not on the commit lists,
because the server wrote it synchronously, we still need to add it back
to the retransmission list.
Add a call that mirrors the effect of nfs_cancel_remove_inode() for
O_DIRECT.
Fixes: ed5d588fe4 ("NFS: Try to join page groups before an O_DIRECT retransmission")
Cc: stable@vger.kernel.org
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
When a directory contains 17 files (except . and ..), nfs client sends
a redundant readdir request after get eof.
A simple reproduce,
At NFS server, create a directory with 17 files under exported directory.
# mkdir test
# cd test
# for i in {0..16} ; do touch $i; done
At NFS client, no matter mounting through nfsv3 or nfsv4,
does ls (or ll) at the created test directory.
A tshark output likes following (for nfsv4),
# tshark -i eth0 tcp port 2049 -Tfields -e ip.src -e ip.dst -e nfs -e nfs.cookie4
srcip dstip SEQUENCE, PUTFH, READDIR 0
dstip srcip SEQUENCE PUTFH READDIR 909539109313539306,2108391201987888856,2305312124304486544,2566335452463141496,2978225129081509984,4263037479923412583,4304697173036510679,4666703455469210097,4759208201298769007,4776701232145978803,5338408478512081262,5949498658935544804,5971526429894832903,6294060338267709855,6528840566229532529,8600463293536422524,9223372036854775807
srcip dstip
srcip dstip SEQUENCE, PUTFH, READDIR 9223372036854775807
dstip srcip SEQUENCE PUTFH READDIR
The READDIR with cookie 9223372036854775807(0x7FFFFFFFFFFFFFFF) is redundant.
Reviewed-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This allocation should use the passed in GFP_ flags instead of
GFP_KERNEL. One places where this matters is in filelayout_pg_init_write()
which uses GFP_NOFS as the allocation flags.
Fixes: 5c83746a0c ("pnfs/blocklayout: in-kernel GETDEVICEINFO XDR parsing")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
The following checkpatch errors are removed:
ERROR: "foo * bar" should be "foo *bar"
"foo * bar" should be "foo *bar"
Signed-off-by: ZhiHu <huzhi001@208suo.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
It is an almost improbable error case but when page allocating loop in
nfs4_get_device_info() fails then we should only free the already
allocated pages, as __free_page() can't deal with NULL arguments.
Found by Linux Verification Center (linuxtesting.org).
Cc: stable@vger.kernel.org
Signed-off-by: Fedor Pchelkin <pchelkin@ispras.ru>
Reviewed-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
module.h, clnt.h, addr.h and dns_resolve.h is always included whether
CONFIG_NFS_USE_KERNEL_DNS is set or not and their order does not seems
to matter.
Move them outside the ifdef to simplify code and avoid checkincludes
message.
Signed-off-by: GUO Zihua <guozihua@huawei.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This integer overflow check works as intended but Clang and GCC and warn
about it when compiling with W=1.
include/linux/sunrpc/xdr.h:539:17: error: comparison is always false
due to limited range of data type [-Werror=type-limits]
Use size_mul() to prevent the integer overflow. It silences the warning
and it's cleaner as well.
Reported-by: Dmitry Antipov <dmantipov@yandex.ru>
Closes: https://lore.kernel.org/all/20230601143332.255312-1-dmantipov@yandex.ru/
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Acked-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
rpcrdma_bc_post_recv() is never implemented since introduction in
commit f531a5dbc4 ("xprtrdma: Pre-allocate backward rpc_rqst and send/receive buffers").
Signed-off-by: Yue Haibing <yuehaibing@huawei.com>
Reviewed-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Now that the remaining issues have been worked out, including some
unexpected 32 bit issues, we can safely enable the feature by default.
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
If the pages are in HIGHMEM then we need to make sure they're mapped
before trying to read data off of them, otherwise we could end up with a
NULL pointer dereference.
The downside to this is that we need an extra cleanup step at the end of
decode to kunmap() the last page. I introduced an xdr_finish_decode()
function to do this. Right now this function only calls the
unmap_current_page() function, but other generic cleanup steps could be
added in the future if we come across anything else.
Reported-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
I found that the read code might send multiple requests using the same
nfs_pgio_header, but nfs4_proc_read_setup() is only called once. This is
how we ended up occasionally double-freeing the scratch buffer, but also
means we set a NULL pointer but non-zero length to the xdr scratch
buffer. This results in an oops the first time decoding needs to copy
something to scratch, which frequently happens when decoding READ_PLUS
hole segments.
I fix this by moving scratch handling into the pageio read code. I
provide a function to allocate scratch space for decoding read replies,
and free the scratch buffer when the nfs_pgio_header is freed.
Fixes: fbd2a05f29 (NFSv4.2: Rework scratch handling for READ_PLUS)
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
I bump the decode_read_plus_maxsz to account for hole segments, but I
need to subtract out this increase when calling
rpc_prepare_reply_pages() so the common case of single data segment
replies can be directly placed into the xdr pages without needing to be
shifted around.
Reported-by: Chuck Lever <chuck.lever@oracle.com>
Fixes: d3b00a802c ("NFS: Replace the READ_PLUS decoding code")
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Smatch reports:
fs/nfs/nfs42xdr.c:1131 decode_read_plus() warn: missing error code? 'status'
Which Dan suggests to fix by doing a hardcoded "return 0" from the
"if (segments == 0)" check.
Additionally, smatch reports that the "status = -EIO" assignment is not
used. This patch addresses both these issues.
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <error27@gmail.com>
Closes: https://lore.kernel.org/r/202305222209.6l5VM2lL-lkp@intel.com/
Fixes: d3b00a802c ("NFS: Replace the READ_PLUS decoding code")
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Highlights include:
Stable fixes
- NFS: Fix a use after free in nfs_direct_join_group()
Bugfixes
- NFS: Fix a sysfs server name memory leak
- NFS: Fix a lock recovery hang in NFSv4.0
- NFS: Fix page free in the error path for nfs42_proc_getxattr
- NFS: Fix page free in the error path for __nfs4_get_acl_uncached
- SUNRPC/rdma: Fix receive buffer dma-mapping after a server disconnect
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Merge tag 'nfs-for-6.5-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client fixes from Trond Myklebust:
- fix a use after free in nfs_direct_join_group() (Cc: stable)
- fix sysfs server name memory leak
- fix lock recovery hang in NFSv4.0
- fix page free in the error path for nfs42_proc_getxattr() and
__nfs4_get_acl_uncached()
- SUNRPC/rdma: fix receive buffer dma-mapping after a server disconnect
* tag 'nfs-for-6.5-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
xprtrdma: Remap Receive buffers after a reconnect
NFSv4: fix out path in __nfs4_get_acl_uncached
NFSv4.2: fix error handling in nfs42_proc_getxattr
NFS: Fix sysfs server name memory leak
NFS: Fix a use after free in nfs_direct_join_group()
NFSv4: Fix dropped lock for racing OPEN and delegation return
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Merge tag 'selinux-pr-20230821' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux
Pull selinux fix from Paul Moore:
"A small fix for a potential problem when cleaning up after a failed
SELinux policy load (list next pointer not being properly initialized
to NULL early enough)"
* tag 'selinux-pr-20230821' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
selinux: set next pointer before attaching to list
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Merge tag 'v6.5-p3' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu:
"Fix a regression in the caam driver and af_alg"
* tag 'v6.5-p3' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: fix uninit-value in af_alg_free_resources
Revert "crypto: caam - adjust RNG timing to support more devices"
This might_sleep() goes back a long time: it was originally introduced
way back when by commit 010060741a ("x86: add might_sleep() to
do_page_fault()"), and made it into the generic VM code when the x86
fault path got re-organized and generalized in commit c2508ec5a5 ("mm:
introduce new 'lock_mm_and_find_vma()' page fault helper").
However, it turns out that the placement of that might_sleep() has
always been rather questionable simply because it's not only a debug
statement to warn about sleeping in contexts that shouldn't sleep (which
was the original reason for adding it), but it also implies a voluntary
scheduling point.
That, in turn, is less than desirable for two reasons:
(a) it ends up being done after we successfully got the mmap_lock, so
just as we got the lock we will now eagerly schedule away and
increase lock contention
and
(b) this is all very possibly part of the "oops, things went horribly
wrong" path and we just haven't figured that out yet
After all, the whole _reason_ for having that get_mmap_lock_carefully()
rather than just doing the obvious mmap_read_lock() is because this code
wants to deal somewhat gracefully with potential kernel wild pointer
bugs.
So then a voluntary scheduling point here is simply not a good idea.
We could certainly turn the 'might_sleep()' into a '__might_sleep()' and
make it be just the debug check that it was originally intended to be.
But even that seems questionable in the wild kernel pointer case - which
again is part of the whole point of this code. The problem wouldn't be
about the _sleeping_ part of the page fault, but about a bad kernel
access. The fact that that bad kernel access might happen in a section
that you shouldn't sleep in is secondary.
So it really ends up being the case that this is simply entirely the
wrong place to do this debug check and related scheduling point at all.
So let's just remove the check entirely. It's been around for over a
decade, it has served its purpose.
The re-schedule will happen at return to user space anyway for the
normal case, and the warning - if we even need it - might be better off
done as a special case for "page fault from kernel mode" once we've
dealt with any potential kernel oopses where the oops is the relevant
thing, not some artificial "scheduling while atomic" test.
Reported-by: Mateusz Guzik <mjguzik@gmail.com>
Link: https://lore.kernel.org/lkml/20230820104303.2083444-1-mjguzik@gmail.com/
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Here are some small tty and serial core fixes for 6.5-rc7 that resolve a
lot of reported issues.
Primarily in here is the fixes for the serial bus code from Tony that
came in -rc1, as it hit wider testing with the huge number of different
types of systems and serial ports. All of the reported issues with
duplicate names and other issues with this code are now resolved.
Other than that included in here is:
- n_gsm fix for a previous fix
- 8250 lockdep annotation fix
- fsl_lpuart serial driver fix
- TIOCSTI documentation update for previous CAP_SYS_ADMIN change
All of these have been in linux-next for a while with no reported
problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-6.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial fixes from Greg KH:
"Here are some small tty and serial core fixes for 6.5-rc7 that resolve
a lot of reported issues.
Primarily in here are the fixes for the serial bus code from Tony that
came in -rc1, as it hit wider testing with the huge number of
different types of systems and serial ports. All of the reported
issues with duplicate names and other issues with this code are now
resolved.
Other than that included in here is:
- n_gsm fix for a previous fix
- 8250 lockdep annotation fix
- fsl_lpuart serial driver fix
- TIOCSTI documentation update for previous CAP_SYS_ADMIN change
All of these have been in linux-next for a while with no reported
problems"
* tag 'tty-6.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
serial: core: Fix serial core port id, including multiport devices
serial: 8250: drop lockdep annotation from serial8250_clear_IER()
tty: n_gsm: fix the UAF caused by race condition in gsm_cleanup_mux
serial: core: Revert port_id use
TIOCSTI: Document CAP_SYS_ADMIN behaviour in Kconfig
serial: 8250: Fix oops for port->pm on uart_change_pm()
serial: 8250: Reinit port_id when adding back serial8250_isa_devs
serial: core: Fix kmemleak issue for serial core device remove
MAINTAINERS: Merge TTY layer and serial drivers
serial: core: Fix serial_base_match() after fixing controller port name
serial: core: Fix serial core controller port name to show controller id
serial: core: Fix serial core port id to not use port->line
serial: core: Controller id cannot be negative
tty: serial: fsl_lpuart: Clear the error flags by writing 1 for lpuart32 platforms
unavailable for a while.
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Merge tag 'i2c-for-6.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
"Usual set of driver fixes. A bit more than usual because I was
unavailable for a while"
* tag 'i2c-for-6.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: bcm-iproc: Fix bcm_iproc_i2c_isr deadlock issue
i2c: Update documentation to use .probe() again
i2c: sun6i-p2wi: Fix an error message in probe()
i2c: hisi: Only handle the interrupt of the driver's transfer
i2c: tegra: Fix i2c-tegra DMA config option processing
i2c: tegra: Fix failure during probe deferral cleanup
i2c: designware: Handle invalid SMBus block data response length value
i2c: designware: Correct length byte validation logic
i2c: imx-lpi2c: return -EINVAL when i2c peripheral clk doesn't work
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Merge tag 'for-6.5-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
- fix infinite loop in readdir(), could happen in a big directory when
files get renamed during enumeration
- fix extent map handling of skipped pinned ranges
- fix a corner case when handling ordered extent length
- fix a potential crash when balance cancel races with pause
- verify correct uuid when starting scrub or device replace
* tag 'for-6.5-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: fix incorrect splitting in btrfs_drop_extent_map_range
btrfs: fix BUG_ON condition in btrfs_cancel_balance
btrfs: only subtract from len_to_oe_boundary when it is tracking an extent
btrfs: fix replace/scrub failure with metadata_uuid
btrfs: fix infinite directory reads
- various code cleanups in amifb, atmel_lcdfb, ssd1307fb, kyro and goldfishfb
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Merge tag 'fbdev-for-6.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev
Pull fbdev fixes and cleanups from Helge Deller:
- various code cleanups in amifb, atmel_lcdfb, ssd1307fb, kyro and
goldfishfb
* tag 'fbdev-for-6.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev:
fbdev: goldfishfb: Do not check 0 for platform_get_irq()
fbdev: atmel_lcdfb: Remove redundant of_match_ptr()
fbdev: kyro: Remove unused declarations
fbdev: ssd1307fb: Print the PWM's label instead of its number
fbdev: mmp: fix value check in mmphw_probe()
fbdev: amifb: Replace zero-length arrays with DECLARE_FLEX_ARRAY() helper
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Merge tag 'block-6.5-2023-08-19' of git://git.kernel.dk/linux
Pull block fixes from Jens Axboe:
"Main thing here is the fix for the regression in flush handling which
caused IO hangs/stalls for a few reporters. Hopefully that should all
be sorted out now. Outside of that, just a few minor fixes for issues
that were introduced in this cycle"
* tag 'block-6.5-2023-08-19' of git://git.kernel.dk/linux:
blk-mq: release scheduler resource when request completes
blk-crypto: dynamically allocate fallback profile
blk-cgroup: hold queue_lock when removing blkg->q_node
drivers/rnbd: restore sysfs interface to rnbd-client
On server-initiated disconnect, rpcrdma_xprt_disconnect() was DMA-
unmapping the Receive buffers, but rpcrdma_post_recvs() neglected
to remap them after a new connection had been established. The
result was immediate failure of the new connection with the Receives
flushing with LOCAL_PROT_ERR.
Fixes: 671c450b6f ("xprtrdma: Fix oops in Receive handler after device removal")
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Another highly rare error case when a page allocating loop (inside
__nfs4_get_acl_uncached, this time) is not properly unwound on error.
Since pages array is allocated being uninitialized, need to free only
lower array indices. NULL checks were useful before commit 62a1573fcf
("NFSv4 fix acl retrieval over krb5i/krb5p mounts") when the array had
been initialized to zero on stack.
Found by Linux Verification Center (linuxtesting.org).
Fixes: 62a1573fcf ("NFSv4 fix acl retrieval over krb5i/krb5p mounts")
Signed-off-by: Fedor Pchelkin <pchelkin@ispras.ru>
Reviewed-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
There is a slight issue with error handling code inside
nfs42_proc_getxattr(). If page allocating loop fails then we free the
failing page array element which is NULL but __free_page() can't deal with
NULL args.
Found by Linux Verification Center (linuxtesting.org).
Fixes: a1f26739cc ("NFSv4.2: improve page handling for GETXATTR")
Signed-off-by: Fedor Pchelkin <pchelkin@ispras.ru>
Reviewed-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Free the formatted server index string after it has been duplicated by
kobject_rename().
Fixes: 1c7251187d ("NFS: add superblock sysfs entries")
Reported-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
Tested-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Chuck reported [1] an IO hang problem on NFS exports that reside on SATA
devices and bisected to commit 615939a2ae ("blk-mq: defer to the normal
submission path for post-flush requests").
We analysed the IO hang problem, found there are two postflush requests
waiting for each other.
The first postflush request completed the REQ_FSEQ_DATA sequence, so go to
the REQ_FSEQ_POSTFLUSH sequence and added in the flush pending list, but
failed to blk_kick_flush() because of the second postflush request which
is inflight waiting in scheduler queue.
The second postflush waiting in scheduler queue can't be dispatched because
the first postflush hasn't released scheduler resource even though it has
completed by itself.
Fix it by releasing scheduler resource when the first postflush request
completed, so the second postflush can be dispatched and completed, then
make blk_kick_flush() succeed.
While at it, remove the check for e->ops.finish_request, as all
schedulers set that. Reaffirm this requirement by adding a WARN_ON_ONCE()
at scheduler registration time, just like we do for insert_requests and
dispatch_request.
[1] https://lore.kernel.org/all/7A57C7AE-A51A-4254-888B-FE15CA21F9E9@oracle.com/
Link: https://lore.kernel.org/linux-block/20230819031206.2744005-1-chengming.zhou@linux.dev/
Reported-by: kernel test robot <oliver.sang@intel.com>
Closes: https://lore.kernel.org/oe-lkp/202308172100.8ce4b853-oliver.sang@intel.com
Fixes: 615939a2ae ("blk-mq: defer to the normal submission path for post-flush requests")
Reported-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>
Tested-by: Chuck Lever <chuck.lever@oracle.com>
Link: https://lore.kernel.org/r/20230813152325.3017343-1-chengming.zhou@linux.dev
[axboe: folded in incremental fix and added tags]
Signed-off-by: Jens Axboe <axboe@kernel.dk>
as latter clobbers flags which interferes with fastop emulation in
KVM, leading to guests freezing during boot
- A fix for the DIV(0) quotient data leak on Zen1 to clear the divider
buffers at the right time
- Disable the SRSO mitigation on unaffected configurations as it got
enabled there unnecessarily
- Change .text section name to fix CONFIG_LTO_CLANG builds
- Improve the optprobe indirect jmp check so that certain configurations
can still be able to use optprobes at all
- A serious and good scrubbing of the untraining routines by PeterZ:
- Add proper speculation stopping traps so that objtool is happy
- Adjust objtool to handle the new thunks
- Make the thunk pointer assignable to the different untraining
sequences at runtime, thus avoiding the alternative at the return
thunk. It simplifies the code a bit too.
- Add a entry_untrain_ret() main entry point which selects the
respective untraining sequence
- Rename things so that they're more clear
- Fix stack validation with FRAME_POINTER=y builds
- Fix static call patching to handle when a JMP to the return thunk is
the last insn on the very last module memory page
- Add more documentation about what each untraining routine does and
why
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Merge tag 'x86_urgent_for_v6.5_rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov:
"Extraordinary embargoed times call for extraordinary measures. That's
why this week's x86/urgent branch is larger than usual, containing all
the known fallout fixes after the SRSO mitigation got merged.
I know, it is a bit late in the game but everyone who has reported a
bug stemming from the SRSO pile, has tested that branch and has
confirmed that it fixes their bug.
Also, I've run it on every possible hardware I have and it is looking
good. It is running on this very machine while I'm typing, for 2 days
now without an issue. Famous last words...
- Use LEA ...%rsp instead of ADD %rsp in the Zen1/2 SRSO return
sequence as latter clobbers flags which interferes with fastop
emulation in KVM, leading to guests freezing during boot
- A fix for the DIV(0) quotient data leak on Zen1 to clear the
divider buffers at the right time
- Disable the SRSO mitigation on unaffected configurations as it got
enabled there unnecessarily
- Change .text section name to fix CONFIG_LTO_CLANG builds
- Improve the optprobe indirect jmp check so that certain
configurations can still be able to use optprobes at all
- A serious and good scrubbing of the untraining routines by PeterZ:
- Add proper speculation stopping traps so that objtool is happy
- Adjust objtool to handle the new thunks
- Make the thunk pointer assignable to the different untraining
sequences at runtime, thus avoiding the alternative at the
return thunk. It simplifies the code a bit too.
- Add a entry_untrain_ret() main entry point which selects the
respective untraining sequence
- Rename things so that they're more clear
- Fix stack validation with FRAME_POINTER=y builds
- Fix static call patching to handle when a JMP to the return thunk
is the last insn on the very last module memory page
- Add more documentation about what each untraining routine does and
why"
* tag 'x86_urgent_for_v6.5_rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/srso: Correct the mitigation status when SMT is disabled
x86/static_call: Fix __static_call_fixup()
objtool/x86: Fixup frame-pointer vs rethunk
x86/srso: Explain the untraining sequences a bit more
x86/cpu/kvm: Provide UNTRAIN_RET_VM
x86/cpu: Cleanup the untrain mess
x86/cpu: Rename srso_(.*)_alias to srso_alias_\1
x86/cpu: Rename original retbleed methods
x86/cpu: Clean up SRSO return thunk mess
x86/alternative: Make custom return thunk unconditional
objtool/x86: Fix SRSO mess
x86/cpu: Fix up srso_safe_ret() and __x86_return_thunk()
x86/cpu: Fix __x86_return_thunk symbol type
x86/retpoline,kprobes: Skip optprobe check for indirect jumps with retpolines and IBT
x86/retpoline,kprobes: Fix position of thunk sections with CONFIG_LTO_CLANG
x86/srso: Disable the mitigation on unaffected configurations
x86/CPU/AMD: Fix the DIV(0) initial fix attempt
x86/retpoline: Don't clobber RFLAGS during srso_safe_ret()
- Fix hardened usercopy BUG when using /proc based firmware update interface.
Thanks to: Nathan Lynch, Kees Cook.
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Merge tag 'powerpc-6.5-6' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fix from Michael Ellerman:
- Fix hardened usercopy BUG when using /proc based firmware update
interface
Thanks to Nathan Lynch and Kees Cook.
* tag 'powerpc-6.5-6' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/rtas_flash: allow user copy to flash block cache objects
blk_crypto_profile_init() calls lockdep_register_key(), which warns and
does not register if the provided memory is a static object.
blk-crypto-fallback currently has a static blk_crypto_profile and calls
blk_crypto_profile_init() thereupon, resulting in the warning and
failure to register.
Fortunately it is simple enough to use a dynamically allocated profile
and make lockdep function correctly.
Fixes: 2fb48d88e7 ("blk-crypto: use dynamic lock class for blk_crypto_profile::lock")
Cc: stable@vger.kernel.org
Signed-off-by: Sweet Tea Dorminy <sweettea-kernel@dorminy.me>
Reviewed-by: Eric Biggers <ebiggers@google.com>
Link: https://lore.kernel.org/r/20230817141615.15387-1-sweettea-kernel@dorminy.me
Signed-off-by: Jens Axboe <axboe@kernel.dk>
When blkg is removed from q->blkg_list from blkg_free_workfn(), queue_lock
has to be held, otherwise, all kinds of bugs(list corruption, hard lockup,
..) can be triggered from blkg_destroy_all().
Fixes: f1c006f1c6 ("blk-cgroup: synchronize pd_free_fn() from blkg_free_workfn() and blkcg_deactivate_policy()")
Cc: Yu Kuai <yukuai3@huawei.com>
Cc: xiaoli feng <xifeng@redhat.com>
Cc: Chunyu Hu <chuhu@redhat.com>
Cc: Mike Snitzer <snitzer@kernel.org>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/r/20230817141751.1128970-1-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Commit 137380c0ec renamed 'rnbd-client' to 'rnbd_client', this changed
sysfs interface to /sys/devices/virtual/rnbd_client/ctl/map_device
from /sys/devices/virtual/rnbd-client/ctl/map_device.
CC: Ivan Orlov <ivan.orlov0322@gmail.com>
CC: "Md. Haris Iqbal" <haris.iqbal@ionos.com>
CC: Jack Wang <jinpu.wang@ionos.com>
Fixes: 137380c0ec ("block/rnbd: make all 'class' structures const")
Signed-off-by: Li Zhijian <lizhijian@fujitsu.com>
Acked-by: Jack Wang <jinpu.wang@ionos.com>
Link: https://lore.kernel.org/r/20230816022210.2501228-1-lizhijian@fujitsu.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Set the next pointer in filename_trans_read_helper() before attaching
the new node under construction to the list, otherwise garbage would be
dereferenced on subsequent failure during cleanup in the out goto label.
Cc: <stable@vger.kernel.org>
Fixes: 4300590243 ("selinux: implement new format of filename transitions")
Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
set up for the target thread and that the thread sees the ZT registers
set via ptrace.
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
"Two more SME fixes related to ptrace(): ensure that the SME is
properly set up for the target thread and that the thread sees
the ZT registers set via ptrace"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64/ptrace: Ensure that the task sees ZT writes on first use
arm64/ptrace: Ensure that SME is set up for target when writing SSVE state
- fix a regression in the sysfs interface
- fix a reference counting bug that's been around for years
- MAINTAINERS update
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Merge tag 'gpio-fixes-for-v6.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio fixes from Bartosz Golaszewski:
- fix a regression in the sysfs interface
- fix a reference counting bug that's been around for years
- MAINTAINERS update
* tag 'gpio-fixes-for-v6.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
gpiolib: fix reference leaks when removing GPIO chips still in use
gpiolib: sysfs: Do unexport GPIO when user asks for it
MAINTAINERS: add content regex for gpio-regmap
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Merge tag '6.5-rc6-smb3-client-fix' of git://git.samba.org/sfrench/cifs-2.6
Pull smb client fix from Steve French:
"A small SMB mount option fix, also for stable"
* tag '6.5-rc6-smb3-client-fix' of git://git.samba.org/sfrench/cifs-2.6:
smb: client: fix null auth
* A fix to avoid excessive rejections from seccomp RET_ERRNO rules.
* A fix for compressed jal/jalr decoding.
* A pair of fixes for independent irq/softirq stacks on kernels built
with CONFIG_FRAME_POINTER=n.
* A fix to avoid a hang handling uaccess fixups.
* Another build fix for toolchain ISA strings, this time for Zicsr and
Zifenci on old GNU toolchains.
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Merge tag 'riscv-for-linus-6.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Palmer Dabbelt:
- avoid excessive rejections from seccomp RET_ERRNO rules
- compressed jal/jalr decoding fix
- fixes for independent irq/softirq stacks on kernels built with
CONFIG_FRAME_POINTER=n
- avoid a hang handling uaccess fixups
- another build fix for toolchain ISA strings, this time for Zicsr and
Zifenci on old GNU toolchains
* tag 'riscv-for-linus-6.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: Handle zicsr/zifencei issue between gcc and binutils
riscv: uaccess: Return the number of bytes effectively not copied
riscv: stack: Fixup independent softirq stack for CONFIG_FRAME_POINTER=n
riscv: stack: Fixup independent irq stack for CONFIG_FRAME_POINTER=n
riscv: correct riscv_insn_is_c_jr() and riscv_insn_is_c_jalr()
riscv: entry: set a0 = -ENOSYS only when syscall != -1
Slightly bigger than I wished, but here we go, a collection of fixes
for 6.5. The only change in the core side is the ease for repeated
ASoC error messages, and the rest are all pretty device-specific small
fixes (including regression fixes) for ASoC Intel and HD-audio /
USB-audio quirks.
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Merge tag 'sound-6.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Slightly bigger than I wished, but here we go, a collection of fixes
for 6.5.
The only change in the core side is the ease for repeated ASoC error
messages, and the rest are all pretty device-specific small fixes
(including regression fixes) for ASoC Intel and HD-audio / USB-audio
quirks"
* tag 'sound-6.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda/realtek - Remodified 3k pull low procedure
ASoC: rt1308-sdw: fix random louder sound
ALSA: hda/cs8409: Support new Dell Dolphin Variants
ALSA: hda/realtek: Switch Dell Oasis models to use SPI
ALSA: hda/realtek: Add quirks for HP G11 Laptops
ASoC: meson: axg-tdm-formatter: fix channel slot allocation
ASoC: SOF: ipc4-topology: Update the basecfg for copier earlier
ASoC: SOF: intel: hda: Clean up link DMA for IPC3 during stop
ASoC: Intel: sof-sdw-cs42142: fix for codec button mapping
ASoC: Intel: sof-sdw: update jack detection quirk for LunarLake RVP
ASoC: SOF: Fix incorrect use of sizeof in sof_ipc3_do_rx_work()
ASoC: lower "no backend DAIs enabled for ... Port" log severity
ASoC: rt5665: add missed regulator_bulk_disable
ASoC: max98363: don't return on success reading revision ID
ALSA: usb-audio: Add support for Mythware XA001AU capture and playback interfaces.
ASoC: fsl: micfil: Use dual license micfil code
- Fix in_flight[issue_type] value error to properly manage requests
MMC host:
- wbsd: Fix double free in the probe error path
- sunplus: Fix error path in probe
- sdhci_f_sdh30: Fix order of function calls in sdhci_f_sdh30_remove
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Merge tag 'mmc-v6.5-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC fixes from Ulf Hansson:
"MMC core:
- Fix in_flight[issue_type] value error to properly manage requests
MMC host:
- wbsd: Fix double free in the probe error path
- sunplus: Fix error path in probe
- sdhci_f_sdh30: Fix order of function calls in sdhci_f_sdh30_remove"
* tag 'mmc-v6.5-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
mmc: f-sdh30: fix order of function calls in sdhci_f_sdh30_remove
mmc: sunplus: Fix error handling in spmmc_drv_probe()
mmc: sunplus: fix return value check of mmc_add_host()
mmc: wbsd: fix double mmc_free_host() in wbsd_init()
mmc: block: Fix in_flight[issue_type] value error
Qualcomm SA8775P platform:
- Some minor device tree binding flunky that is nice to iron
out but more importantly:
- Support the increased interrupt targets mask from 3 to 4
bits, making interrupts with higher (hardware) numbers
work.
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Merge tag 'pinctrl-v6.5-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control fixes from Linus Walleij:
"Fixes two issues with the Qualcomm SA8775P platform:
- Some minor device tree binding flunky that is nice to iron out but
more importantly:
- Support the increased interrupt targets mask from 3 to 4 bits,
making interrupts with higher (hardware) numbers work"
* tag 'pinctrl-v6.5-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
pinctrl: qcom: Add intr_target_width field to support increased number of interrupt targets
dt-bindings: pinctrl: qcom,sa8775p-tlmm: add gpio function constant
