Extend cifs_autodisable_serverino() function to print also text message why
the function was called.
The text message is printed just once for mount then autodisabling
serverino support. Once the serverino support is disabled for mount it will
not be re-enabled. So those text messages do not cause flooding logs.
This change allows to debug issues why cifs.ko decide to turn off server
inode number support and hence disable support for detection of hardlinks.
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Stack-allocated cifs_open_info_data may contain random data.
This can make some fields have wrong value if they are not set later.
Signed-off-by: ChenXiaoSong <chenxiaosong@kylinos.cn>
Signed-off-by: Steve French <stfrench@microsoft.com>
Let SMB2_open() fill the smb2_file_all_info embedded in cifs_open_info_data
directly. This removes the temporary smb2_file_all_info copy in
smb2_open_file().
Signed-off-by: ChenXiaoSong <chenxiaosong@kylinos.cn>
Signed-off-by: Steve French <stfrench@microsoft.com>
SMB2_open() only fills the fixed fields, so a stack-allocated
smb2_file_all_info is sufficient here.
Signed-off-by: ChenXiaoSong <chenxiaosong@kylinos.cn>
Signed-off-by: Steve French <stfrench@microsoft.com>
smb2_ioctl_query_info() validates the PASSTHRU_FSCTL response payload
before copying it to userspace.
The payload offset and length both come from 32-bit fields. The bounds
check currently adds OutputOffset and qi.input_buffer_length directly, so
the addition can wrap in 32-bit arithmetic before the result is compared
against the response buffer length.
A malicious server can use a large OutputOffset and a small OutputCount
to make the wrapped sum pass the bounds check. The later copy_to_user()
then reads from io_rsp + OutputOffset, outside the response buffer.
Use size_add() for the offset plus length check so overflow is treated as
out of bounds.
Fixes: 2b1116bbe8 ("CIFS: Use common error handling code in smb2_ioctl_query_info()")
Signed-off-by: Guangshuo Li <lgs201920130244@gmail.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
macsec_encrypt() reads the Ethernet header via eth_hdr(skb)
(skb->head + skb->mac_header) to memmove() the 12 source/destination MAC
bytes forward and make room for the SecTAG.
On the AF_PACKET SOCK_RAW + PACKET_QDISC_BYPASS transmit path the skb
reaches the macsec ndo_start_xmit() with the MAC header unset, so
eth_hdr(skb) resolves to skb->head + (u16)~0 and the read is out of
bounds: a 12-byte heap over-read that is also emitted on the wire as the
frame's outer source/destination MAC. KASAN reports a slab-out-of-bounds
read in macsec_start_xmit() on 6.0; on current mainline a CONFIG_DEBUG_NET
build flags it as an unset mac header in skb_mac_header().
On the TX path the L2 header is at skb->data, so use skb_eth_hdr(), added
by commit 96cc4b6958 ("macvlan: do not assume mac_header is set in
macvlan_broadcast()") for exactly this purpose.
Fixes: c09440f7dc ("macsec: introduce IEEE 802.1AE driver")
Cc: stable@vger.kernel.org
Signed-off-by: Daehyeon Ko <4ncienth@gmail.com>
Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Link: https://patch.msgid.link/20260703083634.2035145-1-4ncienth@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
The loopback move_data() performs a memcpy into the registered DMB
without checking whether offset + size exceeds the DMB length. Unlike
real ISM hardware, which enforces memory region bounds natively, the
software loopback has no such protection.
A peer-supplied out-of-bounds offset or oversized write would result in
an OOB write past the allocated kernel buffer. Add an explicit bounds
check before the memcpy to reject such requests with -EINVAL.
Fixes: f7a22071db ("net/smc: implement DMB-related operations of loopback-ism")
Cc: stable@vger.kernel.org
Reported-by: Federico Kirschbaum <federico.kirschbaum@xbow.com>
Signed-off-by: Dust Li <dust.li@linux.alibaba.com>
Reported-by: Baul Lee <baul.lee@xbow.com>
Link: https://patch.msgid.link/20260707074318.1448662-1-dust.li@linux.alibaba.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
When CONFIG_DRM_GPUSVM=n (e.g. um-allyesconfig), the only caller of
xe_pt_svm_userptr_notifier_lock() is compiled out, triggering:
drivers/gpu/drm/xe/xe_pt.c:1418:13: warning:
'xe_pt_svm_userptr_notifier_lock' defined but not used
[-Wunused-function]
The helpers cannot simply be removed in this case: the matching
xe_pt_svm_userptr_notifier_unlock() is also referenced from
xe_pt_update_ops_run(), which lives outside any DRM_GPUSVM ifdef and is
gated only at runtime by pt_update_ops->needs_svm_lock. The symbol must
exist in all builds.
Provide empty static inline stubs for !DRM_GPUSVM, matching the pattern
used by xe_svm_notifier_lock()/_unlock() in xe_svm.h.
Fixes: dca6e08c92 ("drm/xe/userptr: Hold notifier_lock for write on inject test path")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202606302210.QqcLbOEN-lkp@intel.com/
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20260630192221.2998168-1-shuicheng.lin@intel.com
Signed-off-by: Shuicheng Lin <shuicheng.lin@intel.com>
(cherry picked from commit 3359422bf0)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
xe_vm_madvise_ioctl() allocates madvise_range.vmas in get_vmas().
After get_vmas() succeeds with at least one VMA, error paths must go
through free_vmas so the array is released before the madvise details are
destroyed.
The L2 flush validation path added for PAT madvise rejects some
SVM/userptr ranges after get_vmas() has succeeded, but jumps directly to
madv_fini. This skips kfree(madvise_range.vmas), leaking the VMA array on
each failed ioctl.
Jump to free_vmas instead, matching the other validation failure paths
after get_vmas() has succeeded.
Fixes: 4f39a194d4 ("drm/xe/xe3p_lpg: Restrict UAPI to enable L2 flush optimization")
Signed-off-by: Guangshuo Li <lgs201920130244@gmail.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patch.msgid.link/20260708073422.725186-1-lgs201920130244@gmail.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
(cherry picked from commit c3a1c3579b)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
xe_pci.c includes <kunit/test-bug.h> twice, separated only by the
<kunit/test.h> include. Drop the redundant second include; this is a
non-functional cleanup flagged by scripts/checkincludes.pl.
Fixes: 6cad22853c ("drm/xe/kunit: Add stub to read_gmdid")
Signed-off-by: Anas Khan <anxkhn28@gmail.com>
Link: https://patch.msgid.link/20260702112820.34675-1-anxkhn28@gmail.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
(cherry picked from commit 84ed5b0a92)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Before arming a user job, xe_exec_ioctl() only added the VM's
dma-resv KERNEL slot as a dependency. That slot covers rebinds and
the kernel operations of the VM's private BOs, but not external BOs
(bo->vm == NULL), which carry their kernel operations (evictions,
moves, ...) in their own dma-resv KERNEL slot.
The DMA_RESV_USAGE_KERNEL slot is the cross-driver contract for
memory management operations that must complete before the BO or its
backing store may be used: any accessor is required to wait on the
KERNEL fences before touching the resv. By skipping the external BOs'
KERNEL slots, the exec path violated that contract and could schedule
a user job while a kernel operation on an external BO mapped by the VM
was still in flight, racing against it and potentially reading or
writing memory that was being moved.
Replace the VM-only dependency with an iteration over every object
locked by the exec, adding each object's KERNEL slot as a job
dependency. This covers the VM resv (rebinds and private BOs) as well
as every external BO, mirroring the drm_gpuvm_resv_add_fence() call
that later publishes the job fence to the same set of objects.
Long-running mode continues to skip this, as before.
Fixes: dd08ebf6c3 ("drm/xe: Introduce a new DRM driver for Intel GPUs")
Cc: stable@vger.kernel.org
Assisted-by: GitHub_Copilot:claude-opus-4.8
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patch.msgid.link/20260702215805.4011228-1-matthew.brost@intel.com
(cherry picked from commit a6b842acf3)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
xe_vm_populate_pgtable() indexed the source PTE array (update->pt_entries)
by the per-call loop counter, assuming each call starts at the first entry
of the update. That holds for the CPU bind path
(xe_migrate_update_pgtables_cpu), which populates a whole update in a single
call, but not for the GPU bind path: write_pgtable() splits an update into
MAX_PTE_PER_SDI (510) sized MI_STORE_DATA_IMM chunks, invoking the populate
callback once per chunk with an advancing qword_ofs but a fresh command-
buffer destination pointer.
As a result, every chunk after the first re-read pt_entries from index 0
instead of from its true offset, so PTEs beyond the first 510 entries of a
single update were programmed with the wrong physical pages, shifting the
mapping by exactly MAX_PTE_PER_SDI pages.
This stayed latent because a single update only exceeds 510 qwords when a
large (e.g. 2M) region is bound as individual 4K PTEs rather than a single
huge-page entry, which happens when the backing store is sufficiently
fragmented. It was surfaced by the BO defrag path, which deliberately
rebinds such fragmented ranges via the GPU bind path, producing
deterministic data corruption offset by 510 pages.
Index pt_entries by the chunk's absolute offset relative to update->ofs so
both the CPU and GPU paths pick the correct entries.
Fixes: dd08ebf6c3 ("drm/xe: Introduce a new DRM driver for Intel GPUs")
Cc: stable@vger.kernel.org
Assisted-by: GitHub_Copilot:claude-opus-4.8
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patch.msgid.link/20260702012434.3861171-1-matthew.brost@intel.com
(cherry picked from commit e6f2d0b757)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Mbox handling of nix_set_rx_mode for a VF with promiscuous and
all_multi flags set to false causes deletion of the PF's promiscuous
and allmulti MCAM rules. This occurs because the APIs that
enable/disable these rules operate only on the PF, even when the
mbox request is made via a VF interface.
Guard both rvu_npc_enable_allmulti_entry() and
rvu_npc_enable_promisc_entry() disable paths with an is_vf() check so
that a VF bringing up or tearing down its interface cannot inadvertently
clear the PF's MCAM rules.
Fixes: 967db3529e ("octeontx2-af: add support for multicast/promisc packet replication feature")
Signed-off-by: Harman Kalra <hkalra@marvell.com>
Signed-off-by: Nitin Shetty J <nshettyj@marvell.com>
Link: https://patch.msgid.link/20260702045616.3002773-2-nshettyj@marvell.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'nf-26-07-08' of https://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf
Florian Westphal says:
====================
netfilter: updates for net
The following patchset contains Netfilter fixes for *net*.
Most of these are LLM fixes for old issues flagged by sashiko/LLMs.
Many of these trigger drive-by-findings in sashiko. In particular:
- many load/store tearing and missing memory barriers, races
etc. in ipset, esp. with GC and resizing.
Keeping the proposed patches spinning for yet-another-iteration
keeps legit fixes back, so I prefer to add these now and follow
up with other reports later.
- flowtable work queue still has possible races with teardown,
but same rationale as with ipset: drive-by findings, not
problems coming with the flowtable IPIP changeset in this PR.
- ever since unreadable frag skb support was added in 6.12, we can no
longer do: BUG_ON(skb_copy_bits( ...): it will fire with such skbs.
Mina Almasry is looking at similar patterns elsewhere in the stack.
1) Guard skb->mac_header adjustment after IPv6 defragmentation in
nf_conntrack_reasm. From Xiang Mei.
2) NUL-terminate ebtables table names before calling find_table_lock() to
prevent stack-out-of-bounds reads. Also from Xiang Mei.
3) Zero the ebtables chainstack array, else error unwind may free bogus
pointer when CPU mask is sparse. All three issues date from 2.6 days.
4) Ensure ebtables module names are c-strings, same bug pattern as 2).
Bug added in 4.6.
5) Fix catchall element handling for inverted lookups in nft_lookup. Fold the
catchall lookup into ext before computing the match status. Was like
this ever since catchall elements got introduced in 5.13.
From Tamaki Yanagawa.
6-9) ipset updates from Jozsef Kadlecsik:
- mark rcu protected areas correctly
- address gc and resize clash in the comment extension
- add/del backlog cleanup in the error path
- allocate right size for the generic hash structure
10-12): IPIP flowtable updates from Pablo Neira Ayuso:
- Use the current direction's route when pushing IPIP headers
Fix incorrect headroom and fragmentation offset calculations.
- Avoid hardware offload for IPIP tunnels due to lack of driver support.
- Support IPIP tunnels with direct xmit in netfilter flowtable.
dst_cache and dst_cookie are moved outside the union to share route
state across flows. This is a followup to work done in 6.19 cycle.
13) Don't BUG() on skb_copy_bits error. Handle unreadable fragments by
either returning an error or restricting the copy operations to linear area,
This became an issue when unreable frag support was merged in 6.12.
14-16): IPVS updates from Yizhou Zhao:
- Pass parsed transport offset to IPVS state handlers.
update callback signatures.
- use correct transport header offset on state lookp in TCP.
As-is it was possible for ipv6 extension header data to be
treated as L4 header.
- same for SCTP. This was also broken since 2.6 days.
17) Ensure inner IP headers in ICMP errors are in the skb headroom after
stripping outer headers. Add more checks for the length of inner headers.
This was broken since 3.7 days.
From Julian Anastasov.
netfilter pull request nf-26-07-08
* tag 'nf-26-07-08' of https://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf:
ipvs: ensure inner headers in ICMP errors are in headroom
ipvs: use parsed transport offset in SCTP state lookup
ipvs: use parsed transport offset in TCP state lookup
ipvs: pass parsed transport offset to state handlers
netfilter: handle unreadable frags
netfilter: flowtable: support IPIP tunnel with direct xmit
netfilter: flowtable: IPIP tunnel hardware offload is not yet support
netfilter: flowtable: use dst in this direction when pushing IPIP header
netfilter: ipset: allocate the proper memory for the generic hash structure
netfilter: ipset: cleanup the add/del backlog when resize failed
netfilter: ipset: exclude gc when resize is in progress
netfilter: ipset: mark the rcu locked areas properly
netfilter: nft_lookup: fix catchall element handling with inverted lookups
netfilter: ebtables: module names must be null-terminated
netfilter: ebtables: zero chainstack array
netfilter: ebtables: terminate table name before find_table_lock()
netfilter: nf_conntrack_reasm: guard mac_header adjustment after IPv6 defrag
====================
Link: https://patch.msgid.link/20260708140309.19633-1-fw@strlen.de
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
ETHTOOL_A_RSS_HFUNC and ETHTOOL_A_RSS_INPUT_XFRM are NLA_U32 attributes,
but ethnl_rss_set() and ethnl_rss_create_doit() parse them with
ethnl_update_u8(), which reads a single byte.
On little endian this happens to read the least significant byte and
works as long as the value fits in a byte. On big endian it reads the
most significant byte, so the requested value is parsed incorrectly.
The destination fields in struct ethtool_rxfh_param are u8, so the
attribute can't be read directly with ethnl_update_u32().
Cap the hfunc policy at U8_MAX so an out of range value is rejected
instead of being silently truncated into the u8 field, and add
ethnl_update_u8_u32() to read the full u32 and narrow it into the u8
destination.
Fixes: 82ae67cbc4 ("ethtool: rss: support setting hfunc via Netlink")
Fixes: d3e2c7bab1 ("ethtool: rss: support setting input-xfrm via Netlink")
Fixes: a166ab7816 ("ethtool: rss: support creating contexts via Netlink")
Reviewed-by: Dragos Tatulea <dtatulea@nvidia.com>
Reviewed-by: Nimrod Oren <noren@nvidia.com>
Signed-off-by: Gal Pressman <gal@nvidia.com>
Link: https://patch.msgid.link/20260706055017.3355806-1-gal@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
mlx5_tun_entropy_refcount_inc() counts both VXLAN and L2-to-L3
tunnel reformat entries as entropy-enabling users. The matching
decrement path only handled VXLAN, leaving L2-to-L3 tunnel entries
counted after release.
Handle MLX5_REFORMAT_TYPE_L2_TO_L3_TUNNEL in
mlx5_tun_entropy_refcount_dec() as well so the enabling entry
refcount remains balanced.
Fixes: f828ca6a2f ("net/mlx5e: Add support for hw encapsulation of MPLS over UDP")
Signed-off-by: Li RongQing <lirongqing@baidu.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20260703141423.1723-1-lirongqing@baidu.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This platform booted with Ubuntu 24.04 with Pipewire audio server. So,
it has pop noise with headphone. But it's normal with Pulseaudio server.
This patch was the workaround. Connect the headphones to DAC 0x2.
The popping sound will disappear.
Signed-off-by: Kailang Yang <kailang@realtek.com>
Link: https://lore.kernel.org/34b990cb56914148ba02fa8e9d176479@realtek.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The MACB driver has since forever leaked the outgoing SKBs that
have not yet been marked as completed. They live in queue->tx_skb
which gets freed without remorse nor checking.
macb_free_consistent() gets called in a few codepaths, but only close will
trigger the added expressions. In macb_open() and macb_alloc_consistent()
failure cases, queues' tx_skb just got allocated and are empty.
Fixes: 89e5785fc8 ("[PATCH] Atmel MACB ethernet driver")
Cc: stable@vger.kernel.org
Reviewed-by: Nicolai Buchwitz <nb@tipi-net.de>
Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com>
Link: https://patch.msgid.link/20260702-macb-drop-tx-v4-1-1c833eebdbc8@bootlin.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Dexuan Cui says:
====================
Fix MANA RX with bounce buffering
With swiotlb=force, the MANA NIC fails to work properly due to commit
730ff06d3f ("net: mana: Use page pool fragments for RX buffers instead
of full pages to improve memory efficiency.").
This happens because, with the standard MTU=1500, the aforementioned
commit uses page pool frags with PP_FLAG_DMA_MAP, but fails to call
page_pool_dma_sync_for_cpu() to sync the received packet for CPU acces
before handing the RX buffer to the stack.
Here patch #2 adds the required page_pool_dma_sync_for_cpu().
Patch #1 validates the packet length reported by the NIC. With patch #2,
page_pool_dma_sync_for_cpu() uses the packet length, so we don't want
to blindly trust the packet length, just in case.
There is no change between v2 and v3.
v3 just swaps the order of the 2 patches in v2, as suggested by Simon [3].
References:
[1] v1: https://lore.kernel.org/netdev/20260618035029.249361-1-decui@microsoft.com/
[2] v2: https://lore.kernel.org/netdev/20260624222605.1794719-1-decui@microsoft.com/
[3] https://lore.kernel.org/netdev/20260626145048.GB1310988@horms.kernel.org/
====================
Link: https://patch.msgid.link/20260702041237.617719-1-decui@microsoft.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
MANA allocates RX buffers from page pool fragments when frag_count is
greater than 1. In that case the buffers remain DMA mapped by page pool
and the RX completion path does not call dma_unmap_single(). As a result,
the implicit sync-for-CPU normally performed by dma_unmap_single() is
missing before the packet data is passed to the networking stack.
This breaks RX on configurations which require explicit DMA syncing, for
example when booted with swiotlb=force.
Fix this by recording the page pool page and DMA sync offset when the RX
buffer is allocated, and syncing the received packet range for CPU access
before handing the RX buffer to the stack.
Fixes: 730ff06d3f ("net: mana: Use page pool fragments for RX buffers instead of full pages to improve memory efficiency.")
Cc: stable@vger.kernel.org
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Link: https://patch.msgid.link/20260702041237.617719-3-decui@microsoft.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Validate the packet length reported in the RX CQE before passing it
to skb processing. The CQE is supplied by the NIC device and should
not be blindly trusted.
Cc: stable@vger.kernel.org
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Fixes: ca9c54d2d6 ("net: mana: Add a driver for Microsoft Azure Network Adapter (MANA)")
Link: https://patch.msgid.link/20260702041237.617719-2-decui@microsoft.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
In tcp_mmap.c, both child_thread() and main() allocate an EVP_MD_CTX
via EVP_MD_CTX_new() when integrity checking is enabled, but neither
function releases the context. child_thread() misses the free in its
common cleanup block, and main() returns without freeing the context.
This results in a SHA256 context leak on every run that uses the
‑i (integrity) option. Add the missing EVP_MD_CTX_free() calls to
the appropriate cleanup paths to fix the leak.
Fixes: 5c5945dc69 ("selftests/net: Add SHA256 computation over data sent in tcp_mmap")
Signed-off-by: Wang Yan <wangyan01@kylinos.cn>
Link: https://patch.msgid.link/20260702025949.442523-1-wangyan01@kylinos.cn
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
There is no need to clear cmma-dirty state if the VM is not using CMMA.
Skip the CMMA-related code if CMMA is not in use.
Fixes: 6cfd47f91f ("KVM: s390: Fix cmma dirty tracking")
Fixes: 190df4a212 ("KVM: s390: CMMA tracking, ESSA emulation, migration mode")
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com>
If a walk entry handler for a lower level returns a value,
dat_crste_walk_range() will not return immediately, but instead loop
again and move to the next entry.
This means that some entries are potentially skipped, and early return
is ignored. Skipped entries might lead to all kinds of issues, given
that the caller expects them to not be skipped. Early return is often
used to interrupt a walk when a rescheduling is needed; if it is
ignored it can lead to stalls.
Fix by breaking from the loop immediately if the walk to a lower level
returned non-zero.
Fixes: 2db149a0a6 ("KVM: s390: KVM page table management functions: walks")
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com>
The natural lock ordering is mmu_lock -> children_lock, but in
gmap_create_shadow() the reverse order is used when handling shadowing
of real address spaces.
Convert the inner locking of kvm->mmu_lock to a trylock; return -EAGAIN
if the lock is busy, and let the caller try again.
This path is not expected to happen in real-life scenarios, so its
performance is not important.
Fixes: a2c17f9270 ("KVM: s390: New gmap code")
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com>
kvm_s390_gisc_register() registers the guest ISC before pinning
the guest interrupt forwarding pages and allocating the AISB bit.
If any of the later setup steps fails, the function unwinds the
pinned pages and other local state, but does not unregister the
GISC reference. Add the missing kvm_s390_gisc_unregister() to the
error unwind path.
Fixes: 3c5a1b6f0a ("KVM: s390: pci: provide routines for enabling/disabling interrupt forwarding")
Cc: stable@vger.kernel.org
Signed-off-by: Haoxiang Li <haoxiang_li2024@163.com>
Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com>
Tested-by: Matthew Rosato <mjrosato@linux.ibm.com>
Acked-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Message-ID: <20260624061910.2794734-1-haoxiang_li2024@163.com>
Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Only synchronize fbdev output to the vblank of an active CRTC. Go over
the list of CRTCs and pick the first that matches. Fixes warnings as
the one shown below
[ 77.201354] WARNING: drivers/gpu/drm/drm_vblank.c:1320 at drm_crtc_wait_one_vblank+0x194/0x1cc [drm], CPU#1: kworker/1:7/1867
[ 77.201354] omapdrm omapdrm.0: [drm] vblank wait timed out on crtc 0
This currently happens if the fbdev output is not on CRTC 0.
Atomic and non-atomic drivers require distinct code paths. As for other
fbdev operations, implement both and select the correct one at runtime.
Not finding an active CRTC is not a bug. Do not wait in this case, but
flush the display update as before.
v4:
- avoid possible deadlocks with locking context (Sashiko)
v3:
- drop excessive state validation (Jani)
- acquire plane and CRTC mutices (Sashiko)
v2:
- move look-up code into separate helper
- support drivers with legacy modesetting
v1:
- see https://lore.kernel.org/dri-devel/1c9e0e24-9c4a-4259-8700-cf9e5fd60ca3@suse.de/
Co-authored-by: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Fixes: d8c4bddcd8 ("drm/fb-helper: Synchronize dirty worker with vblank")
Tested-by: Icenowy Zheng <zhengxingda@iscas.ac.cn>
Tested-by: H. Nikolaus Schaller <hns@goldelico.com>
Closes: https://bugs.debian.org/1138033
Acked-by: Maxime Ripard <mripard@kernel.org>
Link: https://patch.msgid.link/20260702145021.226932-1-tzimmermann@suse.de
Usual mixed bag of recently introduced issues and much older ones.
core
- Ensure kfifo is reset before fd is allocated avoiding concurrent use of
fifo with reset.
multiple drivers
- Fix up missing Kconfig dependencies.
hid-sensors
- Add support for multibyte read as necessary precursor to...
- Fix stale or zero output when reading raw values for quaternions.
adi,adis
- Add IRQF_NO_THREAD to ensure interrupt is not pushed to the software
interrupt chip used for trigger demux in the IIO core from a thread.
bosch,bmc150
- Hardening against device returning a reserved out of range value for
how many entries are in the FIFO.
bosch,bmi160
- Add IRQF_NO_THREAD to ensure interrupt is not pushed to the software
interrupt chip used for trigger demux in the IIO core from a thread.
dynaimage,al3010
- Fix wrong scale for highest gain_range due to too many digits in the
micro part (val2).
freescale,mpl3115
- Fix unbalanced runtime pm on error in read_raw().
invensens,icm42600
- Avoid wrong divisor for fifo timestamps when using the watermark
interrupt.
- Fix timestamp accuracy loss due to excessive divisor for calculations.
kionix,kxsd9
- Fix unbalanced runtime pm on an error in write_raw().
microchip,mcp37feb02
- Fix an uninitialized reference voltage value for particular DT config.
melix,mlx90635
- Build on basis of right Kconfig symbol.
nxp,lpc32xx
- Ensure completion initialized before requesting irq. Hardening against
spurious IRQ.
nxp,saradc
- Fix a delay calculation.
sharp,gp2ap0002
- Fix unbalanced runtime pm on error in read_raw().
st,lsm6dsx
- Fix an issue seen in wild where an unplanned CPU reset can leave the
device on the wrong register page, thus leaving the driver wedged.
st,st_sensors library
- Make sure to handle a device that provides data as big endian correctly.
st,spear
- Ensure completion initialized before requesting irq. Hardening against
spurious IRQ.
taos,tsl2591
- Don't eat return from devm_request_threaded_irq() as that breaks
deferred probing.
ti,ads1119
- Fix a pm reference count leak in an error path.
ti,ads124s08
- Handle gpio look up errors correctly.
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Merge tag 'iio-fixes-for-7.2a' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jic23/iio into char-misc-linus
Jonathan writes:
IIO: 1st set of fixes for the 7.2 cycle
Usual mixed bag of recently introduced issues and much older ones.
core
- Ensure kfifo is reset before fd is allocated avoiding concurrent use of
fifo with reset.
multiple drivers
- Fix up missing Kconfig dependencies.
hid-sensors
- Add support for multibyte read as necessary precursor to...
- Fix stale or zero output when reading raw values for quaternions.
adi,adis
- Add IRQF_NO_THREAD to ensure interrupt is not pushed to the software
interrupt chip used for trigger demux in the IIO core from a thread.
bosch,bmc150
- Hardening against device returning a reserved out of range value for
how many entries are in the FIFO.
bosch,bmi160
- Add IRQF_NO_THREAD to ensure interrupt is not pushed to the software
interrupt chip used for trigger demux in the IIO core from a thread.
dynaimage,al3010
- Fix wrong scale for highest gain_range due to too many digits in the
micro part (val2).
freescale,mpl3115
- Fix unbalanced runtime pm on error in read_raw().
invensens,icm42600
- Avoid wrong divisor for fifo timestamps when using the watermark
interrupt.
- Fix timestamp accuracy loss due to excessive divisor for calculations.
kionix,kxsd9
- Fix unbalanced runtime pm on an error in write_raw().
microchip,mcp37feb02
- Fix an uninitialized reference voltage value for particular DT config.
melix,mlx90635
- Build on basis of right Kconfig symbol.
nxp,lpc32xx
- Ensure completion initialized before requesting irq. Hardening against
spurious IRQ.
nxp,saradc
- Fix a delay calculation.
sharp,gp2ap0002
- Fix unbalanced runtime pm on error in read_raw().
st,lsm6dsx
- Fix an issue seen in wild where an unplanned CPU reset can leave the
device on the wrong register page, thus leaving the driver wedged.
st,st_sensors library
- Make sure to handle a device that provides data as big endian correctly.
st,spear
- Ensure completion initialized before requesting irq. Hardening against
spurious IRQ.
taos,tsl2591
- Don't eat return from devm_request_threaded_irq() as that breaks
deferred probing.
ti,ads1119
- Fix a pm reference count leak in an error path.
ti,ads124s08
- Handle gpio look up errors correctly.
* tag 'iio-fixes-for-7.2a' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (28 commits)
iio: event: Fix event FIFO reset race
iio: imu: inv_icm42600: fix timestamp clock period by using lower value
iio: light: al3010: fix incorrect scale for the highest gain range
iio: adc: nxp-sar-adc: Fix the delay calculation in nxp_sar_adc_wait_for()
iio: light: tsl2591: return actual error from probe IRQ failure
iio: imu: inv_icm42600: fix timestamping by limiting FIFO reading
iio: imu: st_lsm6dsx: deselect shub page before reading whoami
iio: adc: ad7779: add missing 'select IIO_TRIGGERED_BUFFER' to Kconfig
iio: adc: ad4130: add missing `select IIO_TRIGGERED_BUFFER` to Kconfig
iio: adc: ti-ads124s08: Return reset GPIO lookup errors
iio: temperature: Build mlx90635 with CONFIG_MLX90635
iio: light: al3320a: add missing REGMAP_I2C to Kconfig
iio: light: al3010: add missing REGMAP_I2C to Kconfig
iio: light: al3000a: add missing REGMAP_I2C to Kconfig
iio: common: st_sensors: honour channel endianness in read_axis_data
iio: imu: bmi160: add IRQF_NO_THREAD to data-ready trigger IRQ
iio: imu: adis: add IRQF_NO_THREAD to non-FIFO trigger IRQ
iio: hid-sensor-rotation: Fix stale or zero output when reading raw values
HID: sensor-hub: Add sensor_hub_input_attr_read_values() for multi-byte reads
iio: adc: spear: Initialize completion before requesting IRQ
...
The memory allocated for mboxq using mempool_alloc() is not freed in
some of the early exit error paths. Fix that by moving the
mempool_free() call to an earlier point after last use.
Fixes: d79c9e9d4b ("scsi: lpfc: Support dynamic unbounded SGL lists on G7 hardware.")
Cc: stable@vger.kernel.org
Signed-off-by: Abdun Nihaal <nihaal@cse.iitm.ac.in>
Reviewed-by: Justin Tee <justin.tee@broadcom.com>
Link: https://patch.msgid.link/20260707065304.949135-1-nihaal@cse.iitm.ac.in
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
SG_GET_REQUEST_TABLE reports per-request diagnostic state through
sg_req_info::problem. The field is meant to indicate whether there is an
error to report for a completed request.
sg_fill_request_table() currently combines masked_status, host_status
and driver_status with bitwise AND. This only reports a problem when all
three status fields are non-zero at the same time. A normal target check
condition, for example, has masked_status set while host_status and
driver_status may both be zero, so the request is incorrectly reported
as clean.
Use the same condition as sg_new_read(), which sets SG_INFO_CHECK when
any of the three status fields is non-zero.
Cc: stable@vger.kernel.org
Signed-off-by: Xu Rao <raoxu@uniontech.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Link: https://patch.msgid.link/54B60C19F7DB8889+20260707030845.970018-1-raoxu@uniontech.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The trace events in drivers/ufs/core/ufs_trace.h were converted to take
a pointer to the hba structure as an argument for the tracepoint and
then in TP_printk() the printing of the dev_name from the ring buffer
was converted to using the dev dereferenced pointer from the hba saved
pointer.
This is not allowed as the TP_printk() is executed at the time the trace
event is read from /sys/kernel/tracing/trace file. That can happen
literally, seconds, minutes, hours, weeks, days, or even months later!
There is no guarantee that the hba pointer will still exist by the time
it is dereferenced when the "trace" file is read.
Instead, save the device name from the hba pointer at the time the
tracepoint is called and place it into the ring buffer event. Then the
TP_printk() can read the name directly from the ring buffer and remove
the possibility that it will read a freed pointer and crash the kernel.
This was detected when testing the trace event code that looks for
TP_printk() parameters doing illegal derferences[1]
[1] https://lore.kernel.org/all/20260630184836.74d477b6@gandalf.local.home/
Cc: stable@vger.kernel.org
Fixes: 583e518e71 ("scsi: ufs: core: Add hba parameter to trace events")
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Reviewed-by: Peter Wang <peter.wang@mediatek.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Link: https://patch.msgid.link/20260630185412.283c26c5@gandalf.local.home
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Compare against -EDEADLK, which is what ww_mutex_lock() actually
returns and what every other deadlock check in this file already uses.
Function regulator_lock_two() acquires two regulators via
regulator_lock_nested() -> ww_mutex_lock(). On contention,
ww_mutex_lock() returns -EDEADLK, which is the caller's signal to drop
the lock it holds and retry the acquisition in the canonical order.
However, regulator_lock_two() tests the return value against -EDEADLOCK
rather than -EDEADLK. On most architectures, EDEADLK and EDEADLOCK are
the same value, so the comparison happens to be correct and the bug is
invisible. But on MIPS, SPARC, and PowerPC, those two errors have
different values. The test is wrong: a genuine -EDEADLK backoff no
longer matches -EDEADLOCK, so instead of unlocking and retrying, the
code falls into WARN_ON(ret) and returns with only one of the two
regulators locked.
In practice, this is a bug only on MIPS, because the regulator core is
not built or used on the other two platforms.
In general, EDEADLK is preferred over EDEADLOCK for new code.
Fixes: cba6cfdc7c ("regulator: core: Avoid lockdep reports when resolving supplies")
Signed-off-by: Timur Tabi <ttabi@nvidia.com>
Link: https://patch.msgid.link/20260708235722.2953579-1-ttabi@nvidia.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Commit c68337442f ("cifs: Fix busy dentry used after unmounting") fixed
the issue in cifs where deferred close of a file led to a dentry reference
count not being released in umount, by flushing deferredclose_wq in
cifs_kill_sb() to solve it.
However, the cifs DIO path suffers from the same busy-dentry problem caused
by a delayed dentry reference-count release:
[dio] [cifsd] [close + umount]
netfs_unbuffered_write_iter_locked
...
cifs_demultiplex_thread
netfs_unbuffered_write
cifs_issue_write
netfs_wait_for_in_progress_stream [1]
...
netfs_write_subrequest_terminated
netfs_subreq_clear_in_progress
netfs_wake_collector // wake [1]
netfs_put_subrequest
netfs_put_request
queue_work(system_dfl_wq, xxx) [2]
// dio write return cifs_close
_cifsFileInfo_put
// cfile->count 2->1
--cfile->count [3]
// umount
cifs_kill_sb
kill_anon_super
// warning triggered!
shrink_dcache_for_umount [4]
[system_dfl_wq] [5]
netfs_free_request
...
_cifsFileInfo_put
// cfile->count 1->0
--cfile->count
queue_work(fileinfo_put_wq, xxx)
[fileinfo_put_wq] [6]
cifsFileInfo_put_work
cifsFileInfo_put_final
dput
If the umount path is triggered before [5], it results warning:
BUG: Dentry 00000000eab1f070{i=9a917b66ae404fec,n=test} still in use (1)
[unmount of cifs cifs]
The existing per-inode ictx->io_count wait in cifs_evict_inode() does not
help: it lives in the inode eviction path, which runs after
shrink_dcache_for_umount() has already warned about the busy dentries.
Fix it by adding a per-superblock outstanding-rreq counter that is
incremented in cifs_init_request() and decremented in cifs_free_request().
In cifs_kill_sb(), before kill_anon_super(), wait for this counter to reach
0 - which guarantees that all cleanup_work for this sb have run and thus
all relevant cfile puts are queued on fileinfo_put_wq or serverclose_wq.
Then drain the workqueue so the dentry refs are dropped.
This is a targeted wait, not a flush of the system-wide system_dfl_wq.
Fixes: 340cea84f6 ("cifs: open files should not hold ref on superblock")
Signed-off-by: Zizhi Wo <wozizhi@huawei.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
SFU fifos are natively supported (created and recognized) at least by:
- Microsoft POSIX subsystem
- OpenNT/Interix subsystem
- Microsoft SFU (Windows Services for UNIX)
- Microsoft SUA (Subsystem for UNIX-based Applications)
- Windows NFS server (up to the Windows Server 2008 R2)
Windows NFS server since Windows Server 2012 uses new reparse point format
for storing new fifos, but still can recognize this old format (also in the
latest Windows Server 2022 version).
SFU-style fifo is empty regular file which has system attribute set.
These SFU-style fifos are already recognized by Linux SMB client.
But Linux SMB client is currently creating new SFU fifos in different
format which is not compatible with all those SFU-style consumers. Fix this
by creating new fifos in correct SFU format which would be recognized by
all those applications and also by existing Linux SMB clients.
This change affects only creating new fifos when mount option -o sfu is used.
Signed-off-by: Pali Rohár <pali@kernel.org>
Acked-by: Paulo Alcantara (Red Hat) <pc@manguebit.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
SFU sockets are natively supported by Interix 3.0 subsystem and also by
later versions. It is part of Microsoft SFU (Windows Services for UNIX) and
Microsoft SUA (Subsystem for UNIX-based Applications). They can be created
and existing (stored on local disk or remote SMB share) can be recognized.
SFU sockets are recognized also by NFS server included in Windows Server.
Windows NFS server versions since Windows Server 2012 uses new reparse
point format for storing new sockets, but still can recognize this old
format (also in the latest Windows Server 2022 version).
SFU-style socket is a regular file which has system attribute set and
content of the file is one zero byte.
These SFU-style sockets are already recognized by Linux SMB client.
But Linux SMB client is currently creating new SFU socket in different
format which is not compatible with all those SFU applications. Fix this by
creating new sockets in correct SFU format which would be recognized by all
SFU, SUA, NFS and existing Linux SMB clients.
This change affects only creating new sockets when mount option -o sfu is used.
Signed-off-by: Pali Rohár <pali@kernel.org>
Acked-by: Paulo Alcantara (Red Hat) <pc@manguebit.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
cifs_rreq_done() updates the inode atime to current_time(inode) after a
netfs read. It then preserves the CIFS rule that atime should not be
older than mtime, because some applications break if atime is less than
mtime. That rule only requires clamping when atime < mtime.
The current check uses the raw non-zero result of timespec64_compare().
It therefore takes the clamp path for both atime < mtime and
atime > mtime. The latter is the normal case when reading an older file:
the newly recorded atime is newer than the file mtime. The completion
handler then immediately moves atime back to mtime, losing the access
time that was just recorded. Userspace tools that rely on atime, such as
stat, find -atime, backup tools or cold-data classifiers, can therefore
see a recently read CIFS file as not recently accessed.
This is easy to miss because the bug is silent: read I/O still succeeds,
no error is reported, and many systems either do not check atime after
reads or mount with policies such as relatime/noatime. It becomes
visible when a CIFS file has an mtime older than the current time, the
file is read, and the local inode atime is inspected before a later
revalidation replaces the cached timestamps.
Clamp only when atime is actually older than mtime. This matches the
same atime/mtime rule used when applying CIFS inode attributes.
Fixes: 69c3c023af ("cifs: Implement netfslib hooks")
Cc: stable@vger.kernel.org
Signed-off-by: Xu Rao <raoxu@uniontech.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
In tas2562_parse_dt(), the fallback lookup for the deprecated
"shut-down" GPIO property is broken due to a missing pair of braces.
The code intends to reset sdz_gpio to NULL only when the lookup
returns an error that is not -EPROBE_DEFER (so the driver gracefully
continues without a GPIO). However, without braces the statement:
tas2562->sdz_gpio = NULL;
falls outside the IS_ERR() check and is executed unconditionally
for every path through the if block, including a successful GPIO
lookup.
This means any device using the deprecated 'shut-down' DT property
will always have sdz_gpio == NULL after probe, making the GPIO
completely non-functional.
Fix this by adding the missing braces to scope the NULL assignment
inside the IS_ERR() branch, matching the pattern already used for
the primary 'shutdown' GPIO lookup above.
Fixes: f78a97003b ("ASoC: tas2562: Update shutdown GPIO property")
Signed-off-by: Uday Khare <udaykhare77@gmail.com>
Link: https://patch.msgid.link/20260706153109.10953-1-udaykhare77@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
We weren't checking whether the values provided in the private
data in kfd CRIU restore were within bounds.
For queue type, add a KFD_QUEUE_TYPE_MAX and ensure the provided
type is less than it.
For mqd_size, add new function mqd_size_from_queue_type and confirm
that the provided mqd_size matches expectations.
Reviewed-by: David Yat Sin <david.yatsin@amd.com>
Signed-off-by: David Francis <David.Francis@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit f19d8086f6)
Cc: stable@vger.kernel.org
SMU14 derives the default PPT limit from SocketPowerLimitAc/Dc, but
MsgLimits.Power may expose a different firmware limit for the same PPT0
throttler. Using those values independently as fixed min/max bases can
report an incorrect configurable power range.
Keep the socket power limit as the default value and as the fallback for
current-limit queries. Calculate the reported range from both firmware
values instead, using the lower value as the minimum base and the higher
value as the maximum base before applying OD percentages.
Signed-off-by: Yang Wang <kevinyang.wang@amd.com>
Reviewed-by: Kenneth Feng <kenneth.feng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit c936b8126b)
Cc: stable@vger.kernel.org
The valid event ids go from 0 to KFD_SIGNAL_EVENT_LIMIT
allocate_event_notification_slot has an option to specify
an event id to allocate at, used by CRIU. We weren't checking
the bounds on that value.
Check them.
v2: Lower bounds check is unecessary because of idr_alloc
already rejecting negative numbers. Upper bounds check should
be KFD_SIGNAL_EVENT_LIMIT since the signal mode mappings might
not yet exist
Signed-off-by: David Francis <David.Francis@amd.com>
Reviewed-by: David Yat Sin <david.yatsin@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 6853f1f6cb)
Cc: stable@vger.kernel.org
Function kfd_process_free_id() should skip over
the primary kfd process because its context id
is fixed assigned, not allocated through the ida table.
This function should only work on secondary contexts.
Fixes: fac682a1d1 ("amdkfd: identify a secondary kfd process by its id")
Signed-off-by: Zhu Lingshan <lingshan.zhu@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 8799ba6fb6)
Cc: stable@vger.kernel.org
kfd_criu_restore_queue's call of kfd_queue_acquire_buffers was
failing for multiple reasons
- The ctl_stack_size set by the CRIU plugin doesn't match
what is expected by acquire_buffers
- The svm buffer cannot be acquired at this point because
CRIU may not have restored it, or may have restored it
to a different address.
The only reason acquire_buffers was necessary here was to
avoid a null ptr dereference in init_user_queue.
Just put in a check for that dereference; it doesn't appear to
come up in real use cases right now. That is, there is no
usage of CRIU with shared MES.
This is a partial revert of
commit 20a5e7ffdf ("drm/amdkfd: Properly acquire queue buffers in CRIU restore")
Fixes: 20a5e7ffdf ("drm/amdkfd: Properly acquire queue buffers in CRIU restore")
Reviewed-by: David Yat Sin <david.yatsin@amd.com>
Signed-off-by: David Francis <David.Francis@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 1cafa8b29e)
Cc: stable@vger.kernel.org
The valid amdkfd event ids go from 0 to KFD_SIGNAL_EVENT_LIMIT - 1.
During CRIU restore, ensure that the provided event ids are
in that range.
v2: No need for lower bound check since idr_alloc rejects negative
inputs
v3: Also change error message to reflect new error condition
Reviewed-by: David Yat Sin <david.yatsin@amd.com>
Signed-off-by: David Francis <David.Francis@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 5c6c247992)
This is needed to allocate occlusion counters across
both gfx pipes.
Fixes: b7a1a0ef12 ("drm/amd/amdgpu: add pipe1 hardware support")
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 6807352cba)
Cc: stable@vger.kernel.org
era_ctr() replaces the actual error codes returned by dm_get_device()
and dm_set_target_max_io_len() with hardcoded -EINVAL, discarding
the real reason for the failure (e.g. -ENODEV, -ENOMEM). This makes
it harder for users to diagnose problems and is inconsistent with
other dm targets (dm-thin, dm-verity, dm-flakey, dm-ebs) which
propagate the original error.
Fix all three sites to return 'r' instead of -EINVAL.
Signed-off-by: Cao Guanghui <caoguanghui@kylinos.cn>
Reviewed-by: Su Yue <glass.su@suse.com>
Reviewed-by: Ming-Hung Tsai <mtsai@redhat.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
metadata_open() returns NULL when kzalloc_obj() fails, but the
caller era_ctr() only checks IS_ERR(md). Since IS_ERR(NULL)
returns false, the NULL pointer is treated as a valid result
and later assigned to era->md, leading to a NULL pointer
dereference when the metadata is accessed.
Fix this by returning ERR_PTR(-ENOMEM) on allocation failure,
consistent with dm-cache-metadata.c, dm-thin-metadata.c, and
dm-clone-metadata.c which all use ERR_PTR(-ENOMEM) for the
same pattern.
Fixes: eec40579d8 ("dm: add era target")
Signed-off-by: Cao Guanghui <caoguanghui@kylinos.cn>
Reviewed-by: Su Yue <glass.su@suse.com>
Reviewed-by: Ming-Hung Tsai <mtsai@redhat.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
