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We use "unsigned long" to store a PFN in the kernel and phys_addr_t to
store a physical address.
On a 64bit system, both are 64bit wide. However, on a 32bit system, the
latter might be 64bit wide. This is, for example, the case on x86 with
PAE: phys_addr_t and PTEs are 64bit wide, while "unsigned long" only spans
32bit.
The current definition of SWP_PFN_BITS without MAX_PHYSMEM_BITS misses
that case, and assumes that the maximum PFN is limited by an 32bit
phys_addr_t. This implies, that SWP_PFN_BITS will currently only be able
to cover 4 GiB - 1 on any 32bit system with 4k page size, which is wrong.
Let's rely on the number of bits in phys_addr_t instead, but make sure to
not exceed the maximum swap offset, to not make the BUILD_BUG_ON() in
is_pfn_swap_entry() unhappy. Note that swp_entry_t is effectively an
unsigned long and the maximum swap offset shares that value with the swap
type.
For example, on an 8 GiB x86 PAE system with a kernel config based on
Debian 11.5 (-> CONFIG_FLATMEM=y, CONFIG_X86_PAE=y), we will currently
fail removing migration entries (remove_migration_ptes()), because
mm/page_vma_mapped.c:check_pte() will fail to identify a PFN match as
swp_offset_pfn() wrongly masks off PFN bits. For example,
split_huge_page_to_list()->...->remap_page() will leave migration entries
in place and continue to unlock the page.
Later, when we stumble over these migration entries (e.g., via
/proc/self/pagemap), pfn_swap_entry_to_page() will BUG_ON() because these
migration entries shouldn't exist anymore and the page was unlocked.
[ 33.067591] kernel BUG at include/linux/swapops.h:497!
[ 33.067597] invalid opcode: 0000 [#1] PREEMPT SMP NOPTI
[ 33.067602] CPU: 3 PID: 742 Comm: cow Tainted: G E 6.1.0-rc8+ #16
[ 33.067605] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.0-1.fc36 04/01/2014
[ 33.067606] EIP: pagemap_pmd_range+0x644/0x650
[ 33.067612] Code: 00 00 00 00 66 90 89 ce b9 00 f0 ff ff e9 ff fb ff ff 89 d8 31 db e8 48 c6 52 00 e9 23 fb ff ff e8 61 83 56 00 e9 b6 fe ff ff <0f> 0b bf 00 f0 ff ff e9 38 fa ff ff 3e 8d 74 26 00 55 89 e5 57 31
[ 33.067615] EAX: ee394000 EBX: 00000002 ECX: ee394000 EDX: 00000000
[ 33.067617] ESI: c1b0ded4 EDI: 00024a00 EBP: c1b0ddb4 ESP: c1b0dd68
[ 33.067619] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 EFLAGS: 00010246
[ 33.067624] CR0: 80050033 CR2: b7a00000 CR3: 01bbbd20 CR4: 00350ef0
[ 33.067625] Call Trace:
[ 33.067628] ? madvise_free_pte_range+0x720/0x720
[ 33.067632] ? smaps_pte_range+0x4b0/0x4b0
[ 33.067634] walk_pgd_range+0x325/0x720
[ 33.067637] ? mt_find+0x1d6/0x3a0
[ 33.067641] ? mt_find+0x1d6/0x3a0
[ 33.067643] __walk_page_range+0x164/0x170
[ 33.067646] walk_page_range+0xf9/0x170
[ 33.067648] ? __kmem_cache_alloc_node+0x2a8/0x340
[ 33.067653] pagemap_read+0x124/0x280
[ 33.067658] ? default_llseek+0x101/0x160
[ 33.067662] ? smaps_account+0x1d0/0x1d0
[ 33.067664] vfs_read+0x90/0x290
[ 33.067667] ? do_madvise.part.0+0x24b/0x390
[ 33.067669] ? debug_smp_processor_id+0x12/0x20
[ 33.067673] ksys_pread64+0x58/0x90
[ 33.067675] __ia32_sys_ia32_pread64+0x1b/0x20
[ 33.067680] __do_fast_syscall_32+0x4c/0xc0
[ 33.067683] do_fast_syscall_32+0x29/0x60
[ 33.067686] do_SYSENTER_32+0x15/0x20
[ 33.067689] entry_SYSENTER_32+0x98/0xf1
Decrease the indentation level of SWP_PFN_BITS and SWP_PFN_MASK to keep it
readable and consistent.
[david@redhat.com: rely on sizeof(phys_addr_t) and min_t() instead]
Link: https://lkml.kernel.org/r/20221206105737.69478-1-david@redhat.com
[david@redhat.com: use "int" for comparison, as we're only comparing numbers < 64]
Link: https://lkml.kernel.org/r/1f157500-2676-7cef-a84e-9224ed64e540@redhat.com
Link: https://lkml.kernel.org/r/20221205150857.167583-1-david@redhat.com
Fixes: 0d206b5d2e0d ("mm/swap: add swp_offset_pfn() to fetch PFN from swap entry")
Signed-off-by: David Hildenbrand <david@redhat.com>
Acked-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Yang Shi <shy828301@gmail.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Provide a public callback handle_mask_sync() that drivers can use when
they have more complex IRQ masking logic. The default implementation is
regmap_irq_handle_mask_sync(), used if the chip doesn't provide its own
callback.
Cc: Mark Brown <broonie@kernel.org>
Signed-off-by: William Breathitt Gray <william.gray@linaro.org>
Link: https://lore.kernel.org/r/e083474b3d467a86e6cb53da8072de4515bd6276.1669100542.git.william.gray@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
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The fs_context_parse_param hook already has a description, which seems the
right one according to the code.
Fixes: 8eb687bc8069 ("lsm: Add/fix return values in lsm_hooks.h and fix formatting")
Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
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Add support to count upall packets, when kmod of openvswitch
upcall to count the number of packets for upcall succeed and
failed, which is a better way to see how many packets upcalled
on every interfaces.
Signed-off-by: wangchuanlei <wangchuanlei@inspur.com>
Acked-by: Eelco Chaudron <echaudro@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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rhashtable currently only does bh-safe synchronization making it impossible
to use from irq-safe contexts. Switch it to use irq-safe synchronization to
remove the restriction.
v2: Update the lock functions to return the ulong flags value and unlock
functions to take the value directly instead of passing around the
pointer. Suggested by Linus.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: David Vernet <dvernet@meta.com>
Acked-by: Josh Don <joshdon@google.com>
Acked-by: Hao Luo <haoluo@google.com>
Acked-by: Barret Rhoden <brho@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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On kernels using retpoline as a spectrev2 mitigation,
optimize actions and filters that are compiled as built-ins into a direct call.
On subsequent patches we expose the classifiers and actions functions
and wire up the wrapper into tc.
Signed-off-by: Pedro Tammela <pctammela@mojatatu.com>
Reviewed-by: Jamal Hadi Salim <jhs@mojatatu.com>
Reviewed-by: Victor Nogueira <victor@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The type definition should be visible even in configurations not using
CONFIG_NET_CLS_ACT.
Signed-off-by: Pedro Tammela <pctammela@mojatatu.com>
Reviewed-by: Jamal Hadi Salim <jhs@mojatatu.com>
Reviewed-by: Victor Nogueira <victor@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add an option to initialize SOF_TIMESTAMPING_OPT_ID for TCP from
write_seq sockets instead of snd_una.
This should have been the behavior from the start. Because processes
may now exist that rely on the established behavior, do not change
behavior of the existing option, but add the right behavior with a new
flag. It is encouraged to always set SOF_TIMESTAMPING_OPT_ID_TCP on
stream sockets along with the existing SOF_TIMESTAMPING_OPT_ID.
Intuitively the contract is that the counter is zero after the
setsockopt, so that the next write N results in a notification for
the last byte N - 1.
On idle sockets snd_una == write_seq and this holds for both. But on
sockets with data in transmission, snd_una records the unacked offset
in the stream. This depends on the ACK response from the peer. A
process cannot learn this in a race free manner (ioctl SIOCOUTQ is one
racy approach).
write_seq records the offset at the last byte written by the process.
This is a better starting point. It matches the intuitive contract in
all circumstances, unaffected by external behavior.
The new timestamp flag necessitates increasing sk_tsflags to 32 bits.
Move the field in struct sock to avoid growing the socket (for some
common CONFIG variants). The UAPI interface so_timestamping.flags is
already int, so 32 bits wide.
Reported-by: Sotirios Delimanolis <sotodel@meta.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Link: https://lore.kernel.org/r/20221207143701.29861-1-willemdebruijn.kernel@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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jbd2_submit_inode_data() hardcoded use of
jbd2_journal_submit_inode_data_buffers() for submission of data pages.
Make it use j_submit_inode_data_buffers hook instead. This effectively
switches ext4 fastcommits to use ext4_writepages() for data writeout
instead of generic_writepages().
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20221207112722.22220-9-jack@suse.cz
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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When manipulating xattr blocks, we can deadlock infinitely looping
inside ext4_xattr_block_set() where we constantly keep finding xattr
block for reuse in mbcache but we are unable to reuse it because its
reference count is too big. This happens because cache entry for the
xattr block is marked as reusable (e_reusable set) although its
reference count is too big. When this inconsistency happens, this
inconsistent state is kept indefinitely and so ext4_xattr_block_set()
keeps retrying indefinitely.
The inconsistent state is caused by non-atomic update of e_reusable bit.
e_reusable is part of a bitfield and e_reusable update can race with
update of e_referenced bit in the same bitfield resulting in loss of one
of the updates. Fix the problem by using atomic bitops instead.
This bug has been around for many years, but it became *much* easier
to hit after commit 65f8b80053a1 ("ext4: fix race when reusing xattr
blocks").
Cc: stable@vger.kernel.org
Fixes: 6048c64b2609 ("mbcache: add reusable flag to cache entries")
Fixes: 65f8b80053a1 ("ext4: fix race when reusing xattr blocks")
Reported-and-tested-by: Jeremi Piotrowski <jpiotrowski@linux.microsoft.com>
Reported-by: Thilo Fromm <t-lo@linux.microsoft.com>
Link: https://lore.kernel.org/r/c77bf00f-4618-7149-56f1-b8d1664b9d07@linux.microsoft.com/
Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Link: https://lore.kernel.org/r/20221123193950.16758-1-jack@suse.cz
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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fast-commit of create, link, and unlink operations in encrypted
directories is completely broken because the unencrypted filenames are
being written to the fast-commit journal instead of the encrypted
filenames. These operations can't be replayed, as encryption keys
aren't present at journal replay time. It is also an information leak.
Until if/when we can get this working properly, make encrypted directory
operations ineligible for fast-commit.
Note that fast-commit operations on encrypted regular files continue to
be allowed, as they seem to work.
Fixes: aa75f4d3daae ("ext4: main fast-commit commit path")
Cc: <stable@vger.kernel.org> # v5.10+
Signed-off-by: Eric Biggers <ebiggers@google.com>
Link: https://lore.kernel.org/r/20221106224841.279231-2-ebiggers@kernel.org
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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The print format error was found when using ftrace event:
<...>-1406 [000] .... 23599442.895823: jbd2_end_commit: dev 252,8 transaction -1866216965 sync 0 head -1866217368
<...>-1406 [000] .... 23599442.896299: jbd2_start_commit: dev 252,8 transaction -1866216964 sync 0
Use the correct print format for transaction, head and tid.
Fixes: 879c5e6b7cb4 ('jbd2: convert instrumentation from markers to tracepoints')
Signed-off-by: Bixuan Cui <cuibixuan@linux.alibaba.com>
Reviewed-by: Jason Yan <yanaijie@huawei.com>
Link: https://lore.kernel.org/r/1665488024-95172-1-git-send-email-cuibixuan@linux.alibaba.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
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Recently, user ringbuf support introduced a PTR_TO_DYNPTR register type
for use in callback state, because in case of user ringbuf helpers,
there is no dynptr on the stack that is passed into the callback. To
reflect such a state, a special register type was created.
However, some checks have been bypassed incorrectly during the addition
of this feature. First, for arg_type with MEM_UNINIT flag which
initialize a dynptr, they must be rejected for such register type.
Secondly, in the future, there are plans to add dynptr helpers that
operate on the dynptr itself and may change its offset and other
properties.
In all of these cases, PTR_TO_DYNPTR shouldn't be allowed to be passed
to such helpers, however the current code simply returns 0.
The rejection for helpers that release the dynptr is already handled.
For fixing this, we take a step back and rework existing code in a way
that will allow fitting in all classes of helpers and have a coherent
model for dealing with the variety of use cases in which dynptr is used.
First, for ARG_PTR_TO_DYNPTR, it can either be set alone or together
with a DYNPTR_TYPE_* constant that denotes the only type it accepts.
Next, helpers which initialize a dynptr use MEM_UNINIT to indicate this
fact. To make the distinction clear, use MEM_RDONLY flag to indicate
that the helper only operates on the memory pointed to by the dynptr,
not the dynptr itself. In C parlance, it would be equivalent to taking
the dynptr as a point to const argument.
When either of these flags are not present, the helper is allowed to
mutate both the dynptr itself and also the memory it points to.
Currently, the read only status of the memory is not tracked in the
dynptr, but it would be trivial to add this support inside dynptr state
of the register.
With these changes and renaming PTR_TO_DYNPTR to CONST_PTR_TO_DYNPTR to
better reflect its usage, it can no longer be passed to helpers that
initialize a dynptr, i.e. bpf_dynptr_from_mem, bpf_ringbuf_reserve_dynptr.
A note to reviewers is that in code that does mark_stack_slots_dynptr,
and unmark_stack_slots_dynptr, we implicitly rely on the fact that
PTR_TO_STACK reg is the only case that can reach that code path, as one
cannot pass CONST_PTR_TO_DYNPTR to helpers that don't set MEM_RDONLY. In
both cases such helpers won't be setting that flag.
The next patch will add a couple of selftest cases to make sure this
doesn't break.
Fixes: 205715673844 ("bpf: Add bpf_user_ringbuf_drain() helper")
Acked-by: Joanne Koong <joannelkoong@gmail.com>
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20221207204141.308952-4-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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ARG_PTR_TO_DYNPTR is akin to ARG_PTR_TO_TIMER, ARG_PTR_TO_KPTR, where
the underlying register type is subjected to more special checks to
determine the type of object represented by the pointer and its state
consistency.
Move dynptr checks to their own 'process_dynptr_func' function so that
is consistent and in-line with existing code. This also makes it easier
to reuse this code for kfunc handling.
Then, reuse this consolidated function in kfunc dynptr handling too.
Note that for kfuncs, the arg_type constraint of DYNPTR_TYPE_LOCAL has
been lifted.
Acked-by: David Vernet <void@manifault.com>
Acked-by: Joanne Koong <joannelkoong@gmail.com>
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20221207204141.308952-2-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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No conflicts.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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git://anongit.freedesktop.org/drm/drm-misc into drm-next
Some deferred-io and damage worker reworks revert and make a fb function
static
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20221208084040.yw4zavsjd25qsltf@houat
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Range is a new flow destination type which allows matching on
a range of values instead of matching on a specific value.
Range flow destination has the following fields:
- hit_ft: flow table to forward the traffic in case of hit
- miss_ft: flow table to forward the traffic in case of miss
- field: which packet characteristic to match on
- min: minimal value for the selected field
- max: maximal value for the selected field
Note:
- In order to match, the value in the packet should meet
the following criteria: min <= value < max
- Currently, the only supported field type is L2 packet length
Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
Reviewed-by: Alex Vesker <valex@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Update full structure of match definer and add an ID of
the SELECT match definer type.
Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
Reviewed-by: Alex Vesker <valex@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from bluetooth, can and netfilter.
Current release - new code bugs:
- bonding: ipv6: correct address used in Neighbour Advertisement
parsing (src vs dst typo)
- fec: properly scope IRQ coalesce setup during link up to supported
chips only
Previous releases - regressions:
- Bluetooth fixes for fake CSR clones (knockoffs):
- re-add ERR_DATA_REPORTING quirk
- fix crash when device is replugged
- Bluetooth:
- silence a user-triggerable dmesg error message
- L2CAP: fix u8 overflow, oob access
- correct vendor codec definition
- fix support for Read Local Supported Codecs V2
- ti: am65-cpsw: fix RGMII configuration at SPEED_10
- mana: fix race on per-CQ variable NAPI work_done
Previous releases - always broken:
- af_unix: diag: fetch user_ns from in_skb in unix_diag_get_exact(),
avoid null-deref
- af_can: fix NULL pointer dereference in can_rcv_filter
- can: slcan: fix UAF with a freed work
- can: can327: flush TX_work on ldisc .close()
- macsec: add missing attribute validation for offload
- ipv6: avoid use-after-free in ip6_fragment()
- nft_set_pipapo: actually validate intervals in fields after the
first one
- mvneta: prevent oob access in mvneta_config_rss()
- ipv4: fix incorrect route flushing when table ID 0 is used, or when
source address is deleted
- phy: mxl-gpy: add workaround for IRQ bug on GPY215B and GPY215C"
* tag 'net-6.1-rc9' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (77 commits)
net: dsa: sja1105: avoid out of bounds access in sja1105_init_l2_policing()
s390/qeth: fix use-after-free in hsci
macsec: add missing attribute validation for offload
net: mvneta: Fix an out of bounds check
net: thunderbolt: fix memory leak in tbnet_open()
ipv6: avoid use-after-free in ip6_fragment()
net: plip: don't call kfree_skb/dev_kfree_skb() under spin_lock_irq()
net: phy: mxl-gpy: add MDINT workaround
net: dsa: mv88e6xxx: accept phy-mode = "internal" for internal PHY ports
xen/netback: don't call kfree_skb() under spin_lock_irqsave()
dpaa2-switch: Fix memory leak in dpaa2_switch_acl_entry_add() and dpaa2_switch_acl_entry_remove()
ethernet: aeroflex: fix potential skb leak in greth_init_rings()
tipc: call tipc_lxc_xmit without holding node_read_lock
can: esd_usb: Allow REC and TEC to return to zero
can: can327: flush TX_work on ldisc .close()
can: slcan: fix freed work crash
can: af_can: fix NULL pointer dereference in can_rcv_filter
net: dsa: sja1105: fix memory leak in sja1105_setup_devlink_regions()
ipv4: Fix incorrect route flushing when table ID 0 is used
ipv4: Fix incorrect route flushing when source address is deleted
...
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memcg_write_event_control() accesses the dentry->d_name of the specified
control fd to route the write call. As a cgroup interface file can't be
renamed, it's safe to access d_name as long as the specified file is a
regular cgroup file. Also, as these cgroup interface files can't be
removed before the directory, it's safe to access the parent too.
Prior to 347c4a874710 ("memcg: remove cgroup_event->cft"), there was a
call to __file_cft() which verified that the specified file is a regular
cgroupfs file before further accesses. The cftype pointer returned from
__file_cft() was no longer necessary and the commit inadvertently
dropped the file type check with it allowing any file to slip through.
With the invarients broken, the d_name and parent accesses can now race
against renames and removals of arbitrary files and cause
use-after-free's.
Fix the bug by resurrecting the file type check in __file_cft(). Now
that cgroupfs is implemented through kernfs, checking the file
operations needs to go through a layer of indirection. Instead, let's
check the superblock and dentry type.
Signed-off-by: Tejun Heo <tj@kernel.org>
Fixes: 347c4a874710 ("memcg: remove cgroup_event->cft")
Cc: stable@kernel.org # v3.14+
Reported-by: Jann Horn <jannh@google.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Roman Gushchin <roman.gushchin@linux.dev>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Drop support for platform data from the driver because there are no
users of st33zp24_platform_data structure in the mainline kernel.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
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There is no need to include <linux/kernel.h> here.
Prefer the less invasive <linux/types.h> and <linux/compiler_types.h>
which are needed in this .h file itself.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/c1d479b39e30fe70c4579a1af035d4db49421f56.1670069909.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Usually when closing a crypto device (eg: dm-crypt with LUKS) the
volume key is not required, as it requires root privileges anyway, and
root can deny access to a disk in many ways regardless. Requiring the
volume key to lock the device is a peculiarity of the OPAL
specification.
Given we might already have saved the key if the user requested it via
the 'IOC_OPAL_SAVE' ioctl, we can use that key to lock the device if no
key was provided here and the locking range matches, and the user sets
the appropriate flag with 'IOC_OPAL_SAVE'. This allows integrating OPAL
with tools and libraries that are used to the common behaviour and do
not ask for the volume key when closing a device.
Callers can always pass a non-zero key and it will be used regardless,
as before.
Suggested-by: Štěpán Horáček <stepan.horacek@gmail.com>
Signed-off-by: Luca Boccassi <bluca@debian.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Christian Brauner <brauner@kernel.org>
Link: https://lore.kernel.org/r/20221206092913.4625-1-luca.boccassi@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Following by the below discussion, there's the potential UAF issue
between regulator and mfd.
https://lore.kernel.org/all/20221128143601.1698148-1-yangyingliang@huawei.com/
From the analysis of Yingliang
CPU A |CPU B
mt6370_probe() |
devm_mfd_add_devices() |
|mt6370_regulator_probe()
| regulator_register()
| //allocate init_data and add it to devres
| regulator_of_get_init_data()
i2c_unregister_device() |
device_del() |
devres_release_all() |
// init_data is freed |
release_nodes() |
| // using init_data causes UAF
| regulator_register()
It's common to use mfd core to create child device for the regulator.
In order to do the DT lookup for init data, the child that registered
the regulator would pass its parent as the parameter. And this causes
init data resource allocated to its parent, not itself. The issue happen
when parent device is going to release and regulator core is still doing
some operation of init data constraint for the regulator of child device.
To fix it, this patch expand 'regulator_register' API to use the
different devices for init data allocation and DT lookup.
Reported-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: ChiYuan Huang <cy_huang@richtek.com>
Link: https://lore.kernel.org/r/1670311341-32664-1-git-send-email-u0084500@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Expose port function commands to enable / disable migratable
capability, this is used to set the port function as migratable.
Live migration is the process of transferring a live virtual machine
from one physical host to another without disrupting its normal
operation.
In order for a VM to be able to perform LM, all the VM components must
be able to perform migration. e.g.: to be migratable.
In order for VF to be migratable, VF must be bound to VFIO driver with
migration support.
When migratable capability is enabled for a function of the port, the
device is making the necessary preparations for the function to be
migratable, which might include disabling features which cannot be
migrated.
Example of LM with migratable function configuration:
Set migratable of the VF's port function.
$ devlink port show pci/0000:06:00.0/2
pci/0000:06:00.0/2: type eth netdev enp6s0pf0vf1 flavour pcivf pfnum 0
vfnum 1
function:
hw_addr 00:00:00:00:00:00 migratable disable
$ devlink port function set pci/0000:06:00.0/2 migratable enable
$ devlink port show pci/0000:06:00.0/2
pci/0000:06:00.0/2: type eth netdev enp6s0pf0vf1 flavour pcivf pfnum 0
vfnum 1
function:
hw_addr 00:00:00:00:00:00 migratable enable
Bind VF to VFIO driver with migration support:
$ echo <pci_id> > /sys/bus/pci/devices/0000:08:00.0/driver/unbind
$ echo mlx5_vfio_pci > /sys/bus/pci/devices/0000:08:00.0/driver_override
$ echo <pci_id> > /sys/bus/pci/devices/0000:08:00.0/driver/bind
Attach VF to the VM.
Start the VM.
Perform LM.
Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Acked-by: Shannon Nelson <shannon.nelson@amd.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Downstream patch requires to get other function GENERAL2 caps while
mlx5_vport_get_other_func_cap() gets only one type of caps (general).
Rename it to represent this and introduce a generic implementation
of mlx5_vport_get_other_func_cap().
Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Acked-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Expose port function commands to enable / disable RoCE, this is used to
control the port RoCE device capabilities.
When RoCE is disabled for a function of the port, function cannot create
any RoCE specific resources (e.g GID table).
It also saves system memory utilization. For example disabling RoCE enable a
VF/SF saves 1 Mbytes of system memory per function.
Example of a PCI VF port which supports function configuration:
Set RoCE of the VF's port function.
$ devlink port show pci/0000:06:00.0/2
pci/0000:06:00.0/2: type eth netdev enp6s0pf0vf1 flavour pcivf pfnum 0
vfnum 1
function:
hw_addr 00:00:00:00:00:00 roce enable
$ devlink port function set pci/0000:06:00.0/2 roce disable
$ devlink port show pci/0000:06:00.0/2
pci/0000:06:00.0/2: type eth netdev enp6s0pf0vf1 flavour pcivf pfnum 0
vfnum 1
function:
hw_addr 00:00:00:00:00:00 roce disable
Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Introduce IFC related capabilities to enable setting VF to be able to
perform live migration. e.g.: to be migratable.
Signed-off-by: Yishai Hadas <yishaih@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Acked-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/sschmidt/wpan-next
Stefan Schmidt says:
====================
ieee802154-next 2022-12-05
Miquel continued his work towards full scanning support. For this,
we now allow the creation of dedicated coordinator interfaces
to allow a PAN coordinator to serve in the network and set
the needed address filters with the hardware.
On top of this we have the first part to allow scanning for available
15.4 networks. A new netlink scan group, within the existing nl802154
API, was added.
In addition Miquel fixed two issues that have been introduced in the former
patches to free an skb correctly and clarifying an expression in the stack.
From David Girault we got tracing support when registering new PANs.
* tag 'ieee802154-for-net-next-2022-12-05' of git://git.kernel.org/pub/scm/linux/kernel/git/sschmidt/wpan-next:
mac802154: Trace the registration of new PANs
ieee802154: Advertize coordinators discovery
mac802154: Allow the creation of coordinator interfaces
mac802154: Clarify an expression
mac802154: Move an skb free within the rx path
====================
Link: https://lore.kernel.org/r/20221205131909.1871790-1-stefan@datenfreihafen.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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It is currently fairly difficult to follow what clk_rate_request are
issued, and how they have been modified once done.
Indeed, there's multiple paths that can be taken, some functions are
recursive and will just forward the request to its parent, etc.
Adding a lot of debug prints is just not very convenient, so let's add
trace events for the clock requests, one before they are submitted and
one after they are returned.
That way we can simply toggle the tracing on without modifying the
kernel code and without affecting performances or the kernel logs too
much.
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20221018-clk-rate-request-tracing-v2-2-5170b363c413@cerno.tech
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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The struct clk_rate_request is meant to store the context around a rate
request such as the parent, boundaries, and so on.
However, it doesn't store the clock the rate request is submitted to,
which makes debugging difficult.
Let's add a pointer to the relevant clk_core instance in order to
improve the debugging of rate requests in a subsequent patch.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20221018-clk-rate-request-tracing-v2-1-5170b363c413@cerno.tech
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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Merge commit 5b481acab4ce ("bpf: do not rely on ALLOW_ERROR_INJECTION for fmod_ret")
from hid tree into bpf-next.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into soc/drivers
More Qualcomm driver updates for 6.2
Socinfo is extended with knowledge about MSM8956, MSM8976, SM6115,
SM4250, SM8150, SA8155 and SM8550.
Support for RSC v3, as found in SM8550 is added to the RPMH RSC driver.
Support for SM8550 and SM4250 ARC regulators are added to the RPM(h)
power-domain drivers. SM8550 support is added to the LLCC driver.
The AOSS QMP binding is declared compatible for SM8550.
BWMON and LLCC now selects REGMAP_MMIO to ensure dependencies are built
properly.
* tag 'qcom-drivers-for-6.2-2' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux:
soc: qcom: socinfo: Add SM6115 / SM4250 SoC IDs to the soc_id table
dt-bindings: arm: qcom,ids: Add SoC IDs for SM6115 / SM4250 and variants
soc: qcom: socinfo: Add SM8150 and SA8155 SoC IDs to the soc_id table
dt-bindings: arm: qcom,ids: Add SoC IDs for SM8150 and SA8155
dt-bindings: soc: qcom: apr: document generic qcom,apr compatible
soc: qcom: Select REMAP_MMIO for ICC_BWMON driver
soc: qcom: Select REMAP_MMIO for LLCC driver
soc: qcom: rpmpd: Add SM4250 support
dt-bindings: power: rpmpd: Add SM4250 support
dt-bindings: soc: qcom: aoss: Add compatible for SM8550
soc: qcom: llcc: Add configuration data for SM8550
dt-bindings: arm: msm: Add LLCC compatible for SM8550
soc: qcom: llcc: Add v4.1 HW version support
soc: qcom: socinfo: Add SM8550 ID
soc: qcom: rpmh-rsc: Avoid unnecessary checks on irq-done response
soc: qcom: rpmh-rsc: Add support for RSC v3 register offsets
soc: qcom: rpmhpd: Add SM8550 power domains
dt-bindings: power: rpmpd: Add SM8550 to rpmpd binding
soc: qcom: socinfo: Add MSM8956/76 SoC IDs to the soc_id table
dt-bindings: arm: qcom,ids: Add SoC IDs for MSM8956 and MSM8976
Link: https://lore.kernel.org/r/20221207154134.3233779-1-andersson@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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If a cookie expires from the LRU and the LRU_DISCARD flag is set, but
the state machine has not run yet, it's possible another thread can call
fscache_use_cookie and begin to use it.
When the cookie_worker finally runs, it will see the LRU_DISCARD flag
set, transition the cookie->state to LRU_DISCARDING, which will then
withdraw the cookie. Once the cookie is withdrawn the object is removed
the below oops will occur because the object associated with the cookie
is now NULL.
Fix the oops by clearing the LRU_DISCARD bit if another thread uses the
cookie before the cookie_worker runs.
BUG: kernel NULL pointer dereference, address: 0000000000000008
...
CPU: 31 PID: 44773 Comm: kworker/u130:1 Tainted: G E 6.0.0-5.dneg.x86_64 #1
Hardware name: Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
Workqueue: events_unbound netfs_rreq_write_to_cache_work [netfs]
RIP: 0010:cachefiles_prepare_write+0x28/0x90 [cachefiles]
...
Call Trace:
netfs_rreq_write_to_cache_work+0x11c/0x320 [netfs]
process_one_work+0x217/0x3e0
worker_thread+0x4a/0x3b0
kthread+0xd6/0x100
Fixes: 12bb21a29c19 ("fscache: Implement cookie user counting and resource pinning")
Reported-by: Daire Byrne <daire.byrne@gmail.com>
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Tested-by: Daire Byrne <daire@dneg.com>
Link: https://lore.kernel.org/r/20221117115023.1350181-1-dwysocha@redhat.com/ # v1
Link: https://lore.kernel.org/r/20221117142915.1366990-1-dwysocha@redhat.com/ # v2
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Linux 6.1-rc8
|
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Tag branch
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
* tag 'br-v6.2i' of git://linuxtv.org/hverkuil/media_tree: (31 commits)
media: s5c73m3: Switch to GPIO descriptors
media: i2c: s5k5baf: switch to using gpiod API
media: i2c: s5k6a3: switch to using gpiod API
media: imx: remove code for non-existing config IMX_GPT_ICAP
media: si470x: Fix use-after-free in si470x_int_in_callback()
media: staging: stkwebcam: Restore MEDIA_{USB,CAMERA}_SUPPORT dependencies
media: coda: Add check for kmalloc
media: coda: Add check for dcoda_iram_alloc
dt-bindings: media: s5c73m3: Fix reset-gpio descriptor
media: dt-bindings: allwinner: h6-vpu-g2: Add IOMMU reference property
media: s5k4ecgx: Delete driver
media: s5k4ecgx: Switch to GPIO descriptors
media: Switch to use dev_err_probe() helper
headers: Remove some left-over license text in include/uapi/linux/v4l2-*
headers: Remove some left-over license text in include/uapi/linux/dvb/
media: usb: pwc-uncompress: Use flex array destination for memcpy()
media: s5p-mfc: Fix to handle reference queue during finishing
media: s5p-mfc: Clear workbit to handle error condition
media: s5p-mfc: Fix in register read and write for H264
media: imx: Use get_mbus_config instead of parsing upstream DT endpoints
...
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The driver has an option to pass in GPIO numbers from platform
data but this is not used in the kernel so delete this. Get
GPIO descriptors using the standard API and simplify the code,
gpiolib will handle any inversions.
Cc: Sylwester Nawrocki <s.nawrocki@samsung.com>
Cc: Andrzej Hajda <andrzej.hajda@intel.com>
Cc: Alim Akhtar <alim.akhtar@samsung.com>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
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The driver has an option to pass in GPIO numbers from platform
data but this is not used in the kernel so delete this and the
whole platform data mechanism.
Get GPIO descriptors using the standard API and simplify the code,
gpiolib will handle any inversions.
Cc: Sylwester Nawrocki <s.nawrocki@samsung.com>
Cc: Andrzej Hajda <andrzej.hajda@intel.com>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Cc: Alim Akhtar <alim.akhtar@samsung.com>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Reviewed-by: Tommaso Merciai <tommaso.merciai@amarulasolutions.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
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Remove some left-over from commit e2be04c7f995 ("License cleanup: add SPDX
license identifier to uapi header files with a license")
When the SPDX-License-Identifier tag has been added, the corresponding
license text has not been removed.
Remove it now.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
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Remove some left-over from commit e2be04c7f995 ("License cleanup: add
SPDX license identifier to uapi header files with a license")
When the SPDX-License-Identifier tag has been added, the corresponding
license text has not been removed.
Remove it now.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
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Everything is about THS7303, so let the include guard reflect it as well
to avoid potential future conflict.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
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Some devices support sampling of the parallel data at both edges of the
interface pixel clock in order to reduce the pixel clock by two.
Add a mediabus flag that represents this feature.
Signed-off-by: Michael Riesch <michael.riesch@wolfvision.net>
Reviewed-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
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This macro is obsolete, so replace the last few uses with open coded
bi_opf assignments.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Coly Li <colyli@suse.de <mailto:colyli@suse.de>>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20221206144057.720846-1-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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The current way of expressing that a non-bpf kernel component is willing
to accept that bpf programs can be attached to it and that they can change
the return value is to abuse ALLOW_ERROR_INJECTION.
This is debated in the link below, and the result is that it is not a
reasonable thing to do.
Reuse the kfunc declaration structure to also tag the kernel functions
we want to be fmodret. This way we can control from any subsystem which
functions are being modified by bpf without touching the verifier.
Link: https://lore.kernel.org/all/20221121104403.1545f9b5@gandalf.local.home/
Suggested-by: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/r/20221206145936.922196-2-benjamin.tissoires@redhat.com
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Use task_work for completing rsrc removals, it'll be needed later for
spinlock optimisations.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/cbba5d53a11ee6fc2194dacea262c1d733c8b529.1670384893.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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This patch adds ctx->task_complete flag. If set, we'll complete all
requests in the context of the original task. Note, this extends to
completion CQE posting only but not io_kiocb cleanup / free, e.g. io-wq
may free the requests in the free calllback. This flag will be used
later for optimisations purposes.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/21ece72953f76bb2e77659a72a14326227ab6460.1670384893.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Access to the internals of struct iommu_fwspec by non-IOMMU drivers is
discouraged. Many drivers for Tegra SoCs, however, need access to their
IOMMU stream IDs so that they can be programmed into various hardware
registers.
Formalize this access into a common helper to make it easier to audit
and maintain.
Acked-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20221206165945.3551774-3-thierry.reding@gmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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This structure is to be considered private to the IOMMU API. Except for
very few exceptions, IOMMU consumer drivers should treat this as opaque
data.
Acked-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20221206165945.3551774-2-thierry.reding@gmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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There is only one alignment shift for one type of Renesas SDHI. Encode
it directly in its DMA driver to reduce complexity and ease further
simplifications.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20221102125430.28466-3-wsa+renesas@sang-engineering.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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This patch adds reset parameter to mtk_wed_rx_ring_setup signature
in order to align rx_ring_setup callback to tx_ring_setup one introduced
in 'commit 23dca7a90017 ("net: ethernet: mtk_wed: add reset to
tx_ring_setup callback")'
Co-developed-by: Sujuan Chen <sujuan.chen@mediatek.com>
Signed-off-by: Sujuan Chen <sujuan.chen@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Link: https://lore.kernel.org/r/29c6e7a5469e784406cf3e2920351d1207713d05.1670239984.git.lorenzo@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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