mirror of
https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git
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891,408 commits
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1fe8a2bb64 |
BACKPORT: binder: use euid from cred instead of using task
Save the 'struct cred' associated with a binder process
at initial open to avoid potential race conditions
when converting to an euid.
Set a transaction's sender_euid from the 'struct cred'
saved at binder_open() instead of looking up the euid
from the binder proc's 'struct task'. This ensures
the euid is associated with the security context that
of the task that opened binder.
Cc: stable@vger.kernel.org # 4.4+
Fixes:
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a080050156 |
ANDROID: setlocalversion: make KMI_GENERATION optional
GKI required the KMI_GENERATION to be added to the kernel version string, but this only makes sense for GKI kernels, for non-GKI kernels we don't need it. Leave all the other stuff we added, though, as it seems useful. Bug: 205897686 Change-Id: I2e7b3cb7ed5529f1e5e7c9d79a1f7ce4a1b6ee1f Signed-off-by: Alistair Delva <adelva@google.com> |
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e785a25f52 |
Revert "ANDROID: GKI: Enable CHACHA20POLY1305 and XCBC"
This reverts commit
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bfb2ce3eb1 |
ANDROID: GKI: rework the ANDROID_KABI_USE() macro to not use __UNIQUE()
The __UNIQUE_ID() macro causes problems as it turns out to not be deterministic across different compiler runs as it relies on the __COUNTER__ macro which could have been used on other .h files previous to this .h file being included. This shows up specifically when building with "LTO=thin" vs. "LTO=full" as different build paths seem to be triggered. As the structure name isn't really needed at all here, we were just including it for older compilers that could not handle anonymous structures in a union, just drop the whole thing which resolves the abi naming issue. Bug: 210255585 Reported-by: Giuliano Procida <gprocida@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: I6b9449fa9d26ffc5d66b2f0f3b41e2d5f3003f68 |
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937e6e41cc |
UPSTREAM: security: selinux: allow per-file labeling for bpffs
Add support for genfscon per-file labeling of bpffs files. This allows for separate permissions for different pinned bpf objects, which may be completely unrelated to each other. Signed-off-by: Connor O'Brien <connoro@google.com> Signed-off-by: Steven Moreland <smoreland@google.com> Acked-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: Paul Moore <paul@paul-moore.com> (cherry picked from commit 4ca54d3d3022ce27170b50e4bdecc3a42f05dbdc) [which is v5.6-rc1-10-g4ca54d3d3022 and thus already included in 5.10] Bug: 200440527 Change-Id: I8234b9047f29981b8140bd81bb2ff070b3b0b843 (cherry picked from commit d52ac987ad2ae16ff313d7fb6185bc412cb221a4) |
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051373292b |
ANDROID: GKI: Enable CHACHA20POLY1305 and XCBC
To be able to use ChaCha20Poly1305 and AES-XCBC in IPsec Bug: 161717358 Bug: 204402327 Change-Id: Ifeeb3d1f3458d46491ba6cd363656bf4737b5cd3 Signed-off-by: Yan Yan <evitayan@google.com> Signed-off-by: evitayan <evitayan@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> (cherry picked from commit 2d7ae7b614213b28b6cd6230104e1f5f723e81df) |
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55cb12f0f8 |
ANDROID: Incremental fs: Fix dentry get/put imbalance on vfs_mkdir() failure
Syz{bot,kaller} reports[0]:
BUG: Dentry ffff888119d8a000{i=0,n=.index} still in use (1) [unmount of ramfs ramfs]
------------[ cut here ]------------
WARNING: CPU: 0 PID: 367 at fs/dcache.c:1616 umount_check+0x18d/0x1d0 fs/dcache.c:1607
Modules linked in:
CPU: 0 PID: 367 Comm: syz-executor388 Not tainted 5.10.75-syzkaller-01082-g234d53d2bb60 #0
Hardware name: Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:umount_check+0x18d/0x1d0 fs/dcache.c:1607
Code: 8b 0b 49 81 c6 f8 03 00 00 48 c7 c7 00 40 2e 85 4c 89 e6 48 8b 55 d0 4c 89 e1 45 89 f8 31 c0 41 56 e8 ae d9 9e ff 48 83 c4 08 <0f> 0b e9 f1 fe ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c c9 fe ff
RSP: 0018:ffffc9000096f770 EFLAGS: 00010292
RAX: 0000000000000055 RBX: ffffffff866af200 RCX: 1ad6b89836e5b500
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc9000096f7a0 R08: ffffffff81545368 R09: 0000000000000003
R10: fffff5200012de41 R11: 0000000000000004 R12: ffff888119d8a000
R13: dffffc0000000000 R14: ffff88811d7373f8 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f01b7bddb68 CR3: 000000010c4f0000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
d_walk+0x309/0x540 fs/dcache.c:1326
do_one_tree fs/dcache.c:1623 [inline]
shrink_dcache_for_umount+0x8e/0x1b0 fs/dcache.c:1639
generic_shutdown_super+0x66/0x2c0 fs/super.c:447
kill_anon_super fs/super.c:1108 [inline]
kill_litter_super+0x75/0xa0 fs/super.c:1117
ramfs_kill_sb+0x44/0x50 fs/ramfs/inode.c:270
deactivate_locked_super+0xb0/0x100 fs/super.c:335
deactivate_super+0xa5/0xd0 fs/super.c:366
cleanup_mnt+0x45f/0x510 fs/namespace.c:1118
__cleanup_mnt+0x19/0x20 fs/namespace.c:1125
task_work_run+0x147/0x1b0 kernel/task_work.c:154
exit_task_work include/linux/task_work.h:30 [inline]
do_exit+0x70e/0x23a0 kernel/exit.c:813
do_group_exit+0x16a/0x2d0 kernel/exit.c:910
get_signal+0x133e/0x1f80 kernel/signal.c:2790
arch_do_signal+0x8d/0x620 arch/x86/kernel/signal.c:805
exit_to_user_mode_loop kernel/entry/common.c:161 [inline]
exit_to_user_mode_prepare+0xaa/0xe0 kernel/entry/common.c:191
syscall_exit_to_user_mode+0x24/0x40 kernel/entry/common.c:266
do_syscall_64+0x3d/0x70 arch/x86/entry/common.c:56
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f01b7b884f9
Code: Unable to access opcode bytes at RIP 0x7f01b7b884cf.
RSP: 002b:00007f01b7b19308 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f01b7c103f8 RCX: 00007f
Which was due to a missing dput() before returning from a vfs_mkdir() failure.
Bug: 203827798
Link: [0] https://syzkaller.appspot.com/bug?extid=81b5ca9b2848f4dad8fa
Reported-by: syzbot+81b5ca9b2848f4dad8fa@syzkaller.appspotmail.com
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Change-Id: Iaef9aa0aecc964645aaca5fe8d79388ae28527bd
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59d8264680 |
ANDROID: f2fs: fix potential deadlock by android ftrace
sb_internal#2 --> &s->s_dquot.dqio_sem --> fs_reclaim
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(fs_reclaim);
lock(&s->s_dquot.dqio_sem);
lock(fs_reclaim);
lock(sb_internal#2);
*** DEADLOCK ***
3 locks held by kswapd0/133:
#0: ffffffda597c93a8 (fs_reclaim){+.+.}-{0:0}, at: __fs_reclaim_acquire+0x4/0x50
#1: ffffffda597bc890 (shrinker_rwsem){++++}-{3:3}, at: shrink_slab+0xa0/0x19c
#2: ffffff80d5fb90e0 (&type->s_umount_key#50){.+.+}-{3:3}, at: super_cache_scan+0x40/0x1dc
stack backtrace:
CPU: 7 PID: 133 Comm: kswapd0 Tainted: G W O 5.10.43-android12-9-g4665ec64f3df #1
Hardware name: MT6879(ENG) (DT)
Call trace:
dump_backtrace.cfi_jt+0x0/0x8
show_stack+0x1c/0x2c
dump_stack_lvl+0xd8/0x16c
print_circular_bug+0x2d4/0x2d8
check_noncircular+0x190/0x1a4
validate_chain+0xc54/0x2d34
__lock_acquire+0x7e4/0xed4
lock_acquire+0x114/0x394
f2fs_evict_inode+0x1a0/0x8b8
evict+0xd4/0x2f8
iput+0x1c0/0x258
dentry_unlink_inode+0x16c/0x1dc
__dentry_kill+0x128/0x280
shrink_dentry_list+0x6c/0x420
prune_dcache_sb+0x5c/0x90
super_cache_scan+0x13c/0x1dc
do_shrink_slab+0x1e0/0x388
shrink_slab+0xf4/0x19c
shrink_node_memcgs+0x80/0x25c
shrink_node+0x324/0x710
balance_pgdat+0x3a8/0x6a8
kswapd+0x484/0x594
kthread+0x15c/0x1ac
ret_from_fork+0x10/0x30
Bug: 201025620
Signed-off-by: Jaegeuk Kim <jaegeuk@google.com>
Change-Id: Idaa303eb7c681a56ad5d4e1f6dddbda71f7fece4
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dc8c919ca6 |
ANDROID: GKI: Update FCNT KMI symbol list
No new symbols added that are not already in the .xml file. Bug: 204143632 Signed-off-by: Nobutaka Matsuo <matsuo.nobu@fcnt.com> Change-Id: I7358e77923e6668ad20988ef76dec30db4d051c0 |
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e3f12f4239 |
ANDROID: GKI : Update symbols to symbol list
Update symbols to symbol list by oem modules Leaf changes summary: 1 artifact changed Changed leaf types summary: 0 leaf type changed Removed/Changed/Added functions summary: 0 Removed, 0 Changed, 1 Added function Removed/Changed/Added variables summary: 0 Removed, 0 Changed, 0 Added variable 1 Added function: [A] 'function u8 sdio_writeb_readb(sdio_func*, u8, unsigned int, int*)' Bug: 203724894 Signed-off-by: liunan1 <liunan1@oppo.com> Change-Id: I09539934e8cb3dcd25cb550c98b0b3dc86ee6789 |
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47c8de47e1 |
BACKPORT: crypto: arch - conditionalize crypto api in arch glue for lib code
For glue code that's used by Zinc, the actual Crypto API functions might not necessarily exist, and don't need to exist either. Before this patch, there are valid build configurations that lead to a unbuildable kernel. This fixes it to conditionalize those symbols on the existence of the proper config entry. (backport required changing CONFIG_CRYPTO_SKCIPHER to CONFIG_CRYPTO_BLKCIPHER in a few places) Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Acked-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> (cherry picked from commit 8394bfec51e0e565556101bcc4e2fe7551104cd8) Bug: 152722841 [adelva: Removed all algos except blake2s] Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Change-Id: Iedddadcd70a85587daadf1a8511b82fbdd574018 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> |
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514e31d6a1 |
BACKPORT: crypto: arch/lib - limit simd usage to 4k chunks
The initial Zinc patchset, after some mailing list discussion, contained
code to ensure that kernel_fpu_enable would not be kept on for more than
a 4k chunk, since it disables preemption. The choice of 4k isn't totally
scientific, but it's not a bad guess either, and it's what's used in
both the x86 poly1305, blake2s, and nhpoly1305 code already (in the form
of PAGE_SIZE, which this commit corrects to be explicitly 4k for the
former two).
Ard did some back of the envelope calculations and found that
at 5 cycles/byte (overestimate) on a 1ghz processor (pretty slow), 4k
means we have a maximum preemption disabling of 20us, which Sebastian
confirmed was probably a good limit.
Unfortunately the chunking appears to have been left out of the final
patchset that added the glue code. So, this commit adds it back in.
Fixes: 84e03fa39fbe ("crypto: x86/chacha - expose SIMD ChaCha routine as library function")
Fixes: b3aad5bad26a ("crypto: arm64/chacha - expose arm64 ChaCha routine as library function")
Fixes: a44a3430d71b ("crypto: arm/chacha - expose ARM ChaCha routine as library function")
Fixes: d7d7b8535662 ("crypto: x86/poly1305 - wire up faster implementations for kernel")
Fixes: f569ca164751 ("crypto: arm64/poly1305 - incorporate OpenSSL/CRYPTOGAMS NEON implementation")
Fixes: a6b803b3ddc7 ("crypto: arm/poly1305 - incorporate OpenSSL/CRYPTOGAMS NEON implementation")
Fixes: ed0356eda153 ("crypto: blake2s - x86_64 SIMD implementation")
Cc: Eric Biggers <ebiggers@google.com>
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: stable@vger.kernel.org
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
(cherry picked from commit 706024a52c614b478b63f7728d202532ce6591a9)
Bug: 152722841
[adelva: Removed all algos except blake2s]
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Ief6d06e473929c17c2fcf751e53b9f59ba614158
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568c0c89d9 |
UPSTREAM: crypto: arm/blake2s - fix for big endian
The new ARM BLAKE2s code doesn't work correctly (fails the self-tests)
in big endian kernel builds because it doesn't swap the endianness of
the message words when loading them. Fix this.
Fixes: 5172d322d34c ("crypto: arm/blake2s - add ARM scalar optimized BLAKE2s")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
(cherry picked from commit d2f2516a3882c0c6463e33c9b112b39bd483f821)
Bug: 178411248
Change-Id: Iff419963407eeb0435b9550ef126db4bf137a8a1
Signed-off-by: Eric Biggers <ebiggers@google.com>
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ce6e69838c |
ANDROID: gki_defconfig: enable BLAKE2b support
Bug: 178411248 Change-Id: Iec497954d29adcf7193da9ca4b27d61eac7615d9 Signed-off-by: Eric Biggers <ebiggers@google.com> |
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40501f7350 |
BACKPORT: crypto: arm/blake2b - add NEON-accelerated BLAKE2b
Add a NEON-accelerated implementation of BLAKE2b. On Cortex-A7 (which these days is the most common ARM processor that doesn't have the ARMv8 Crypto Extensions), this is over twice as fast as SHA-256, and slightly faster than SHA-1. It is also almost three times as fast as the generic implementation of BLAKE2b: Algorithm Cycles per byte (on 4096-byte messages) =================== ======================================= blake2b-256-neon 14.0 sha1-neon 16.3 blake2s-256-arm 18.8 sha1-asm 20.8 blake2s-256-generic 26.0 sha256-neon 28.9 sha256-asm 32.0 blake2b-256-generic 38.9 This implementation isn't directly based on any other implementation, but it borrows some ideas from previous NEON code I've written as well as from chacha-neon-core.S. At least on Cortex-A7, it is faster than the other NEON implementations of BLAKE2b I'm aware of (the implementation in the BLAKE2 official repository using intrinsics, and Andrew Moon's implementation which can be found in SUPERCOP). It does only one block at a time, so it performs well on short messages too. NEON-accelerated BLAKE2b is useful because there is interest in using BLAKE2b-256 for dm-verity on low-end Android devices (specifically, devices that lack the ARMv8 Crypto Extensions) to replace SHA-1. On these devices, the performance cost of upgrading to SHA-256 may be unacceptable, whereas BLAKE2b-256 would actually improve performance. Although BLAKE2b is intended for 64-bit platforms (unlike BLAKE2s which is intended for 32-bit platforms), on 32-bit ARM processors with NEON, BLAKE2b is actually faster than BLAKE2s. This is because NEON supports 64-bit operations, and because BLAKE2s's block size is too small for NEON to be helpful for it. The best I've been able to do with BLAKE2s on Cortex-A7 is 18.8 cpb with an optimized scalar implementation. (I didn't try BLAKE2sp and BLAKE3, which in theory would be faster, but they're more complex as they require running multiple hashes at once. Note that BLAKE2b already uses all the NEON bandwidth on the Cortex-A7, so I expect that any speedup from BLAKE2sp or BLAKE3 would come only from the smaller number of rounds, not from the extra parallelism.) For now this BLAKE2b implementation is only wired up to the shash API, since there is no library API for BLAKE2b yet. However, I've tried to keep things consistent with BLAKE2s, e.g. by defining blake2b_compress_arch() which is analogous to blake2s_compress_arch() and could be exported for use by the library API later if needed. Acked-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Eric Biggers <ebiggers@google.com> Tested-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> (cherry picked from commit 1862eb007367f9e4cfd52d0406742de337b28ebf) (removed unnecessary return statement in blake2b_neon_mod_exit(), which was breaking the build because in pre-5.6 kernels crypto_unregister_shashes() returned 'int' rather than 'void') Bug: 178411248 Change-Id: I01557f0a63db0eb21778d0cc7b582ad89898d44a Signed-off-by: Eric Biggers <ebiggers@google.com> |
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477000061d |
BACKPORT: crypto: blake2b - update file comment
The file comment for blake2b_generic.c makes it sound like it's the reference implementation of BLAKE2b with only minor changes. But it's actually been changed a lot. Update the comment to make this clearer. Reviewed-by: David Sterba <dsterba@suse.com> Acked-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> (cherry picked from commit 0cdc438e6e13436b0190910ef7da49ce4f5a44f4) Conflicts: crypto/blake2b_generic.c (trivial conflict due to upstream commit 9332a9e73918, "crypto: Replace HTTP links with HTTPS ones") Bug: 178411248 Change-Id: I8b58cd0e2892a873866ead52fa4dba3edabdeeb3 Signed-off-by: Eric Biggers <ebiggers@google.com> |
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c5816192fd |
BACKPORT: crypto: blake2b - sync with blake2s implementation
Sync the BLAKE2b code with the BLAKE2s code as much as possible:
- Move a lot of code into new headers <crypto/blake2b.h> and
<crypto/internal/blake2b.h>, and adjust it to be like the
corresponding BLAKE2s code, i.e. like <crypto/blake2s.h> and
<crypto/internal/blake2s.h>.
- Rename constants, e.g. BLAKE2B_*_DIGEST_SIZE => BLAKE2B_*_HASH_SIZE.
- Use a macro BLAKE2B_ALG() to define the shash_alg structs.
- Export blake2b_compress_generic() for use as a fallback.
This makes it much easier to add optimized implementations of BLAKE2b,
as optimized implementations can use the helper functions
crypto_blake2b_{setkey,init,update,final}() and
blake2b_compress_generic(). The ARM implementation will use these.
But this change is also helpful because it eliminates unnecessary
differences between the BLAKE2b and BLAKE2s code, so that the same
improvements can easily be made to both. (The two algorithms are
basically identical, except for the word size and constants.) It also
makes it straightforward to add a library API for BLAKE2b in the future
if/when it's needed.
This change does make the BLAKE2b code slightly more complicated than it
needs to be, as it doesn't actually provide a library API yet. For
example, __blake2b_update() doesn't really need to exist yet; it could
just be inlined into crypto_blake2b_update(). But I believe this is
outweighed by the benefits of keeping the code in sync.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
(cherry picked from commit 28dcca4cc0c01e2467549a36b1b0eacfdb01236c)
Conflicts:
crypto/blake2b_generic.c
(conflict due to this branch not having commit 674f368a952c,
"crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN")
Bug: 178411248
Change-Id: I755c64fefe1209b54d1417d91e8a4c207382a620
Signed-off-by: Eric Biggers <ebiggers@google.com>
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be7d8de428 |
UPSTREAM: crypto: arm/blake2s - add ARM scalar optimized BLAKE2s
Add an ARM scalar optimized implementation of BLAKE2s. NEON isn't very useful for BLAKE2s because the BLAKE2s block size is too small for NEON to help. Each NEON instruction would depend on the previous one, resulting in poor performance. With scalar instructions, on the other hand, we can take advantage of ARM's "free" rotations (like I did in chacha-scalar-core.S) to get an implementation get runs much faster than the C implementation. Performance results on Cortex-A7 in cycles per byte using the shash API: 4096-byte messages: blake2s-256-arm: 18.8 blake2s-256-generic: 26.0 500-byte messages: blake2s-256-arm: 20.3 blake2s-256-generic: 27.9 100-byte messages: blake2s-256-arm: 29.7 blake2s-256-generic: 39.2 32-byte messages: blake2s-256-arm: 50.6 blake2s-256-generic: 66.2 Except on very short messages, this is still slower than the NEON implementation of BLAKE2b which I've written; that is 14.0, 16.4, 25.8, and 76.1 cpb on 4096, 500, 100, and 32-byte messages, respectively. However, optimized BLAKE2s is useful for cases where BLAKE2s is used instead of BLAKE2b, such as WireGuard. This new implementation is added in the form of a new module blake2s-arm.ko, which is analogous to blake2s-x86_64.ko in that it provides blake2s_compress_arch() for use by the library API as well as optionally register the algorithms with the shash API. Acked-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Eric Biggers <ebiggers@google.com> Tested-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> (cherry picked from commit 5172d322d34c30fb926b29aeb5a064e1fd8a5e13) Bug: 152722841 Bug: 178411248 Change-Id: I0ba7a0ea53518d512ccbe54a56970d6bbe2a32e0 Signed-off-by: Eric Biggers <ebiggers@google.com> |
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d63d7c1ee0 |
UPSTREAM: crypto: blake2s - include <linux/bug.h> instead of <asm/bug.h>
Address the following checkpatch warning: WARNING: Use #include <linux/bug.h> instead of <asm/bug.h> Signed-off-by: Eric Biggers <ebiggers@google.com> Acked-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> (cherry picked from commit bbda6e0f1303953c855ee3669655a81b69fbe899) Bug: 152722841 Bug: 178411248 Change-Id: Ib12103873c97387ba59ff897c44a18e4f1e6da3d Signed-off-by: Eric Biggers <ebiggers@google.com> |
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b8de6b8e2c |
UPSTREAM: crypto: blake2s - adjust include guard naming
Use the full path in the include guards for the BLAKE2s headers to avoid ambiguity and to match the convention for most files in include/crypto/. Signed-off-by: Eric Biggers <ebiggers@google.com> Acked-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> (cherry picked from commit 8786841bc2020f7f2513a6c74e64912f07b9c0dc) Bug: 152722841 Bug: 178411248 Change-Id: Iea57edbe14c9083ce3d7a77b2c3bd63cd6650e56 Signed-off-by: Eric Biggers <ebiggers@google.com> |
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609d9425fa |
UPSTREAM: crypto: blake2s - add comment for blake2s_state fields
The first three fields of 'struct blake2s_state' are used in assembly code, which isn't immediately obvious, so add a comment to this effect. Signed-off-by: Eric Biggers <ebiggers@google.com> Acked-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> (cherry picked from commit 7d87131fadd53a0401b5c078dd64e58c3ea6994c) Bug: 152722841 Bug: 178411248 Change-Id: Iab85ddd350a2db917b247ba8f6e224eba905b747 Signed-off-by: Eric Biggers <ebiggers@google.com> |
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32ac79b096 |
UPSTREAM: crypto: blake2s - optimize blake2s initialization
If no key was provided, then don't waste time initializing the block buffer, as its initial contents won't be used. Also, make crypto_blake2s_init() and blake2s() call a single internal function __blake2s_init() which treats the key as optional, rather than conditionally calling blake2s_init() or blake2s_init_key(). This reduces the compiled code size, as previously both blake2s_init() and blake2s_init_key() were being inlined into these two callers, except when the key size passed to blake2s() was a compile-time constant. These optimizations aren't that significant for BLAKE2s. However, the equivalent optimizations will be more significant for BLAKE2b, as everything is twice as big in BLAKE2b. And it's good to keep things consistent rather than making optimizations for BLAKE2b but not BLAKE2s. Signed-off-by: Eric Biggers <ebiggers@google.com> Acked-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> (cherry picked from commit 42ad8cf821f0d8564c393e9ad7d00a1a271d18ae) Bug: 152722841 Bug: 178411248 Change-Id: Id057e0c8a5f0e432f227dc3deaa8997a7cbc0577 Signed-off-by: Eric Biggers <ebiggers@google.com> |
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74c75891bd |
BACKPORT: crypto: blake2s - share the "shash" API boilerplate code
Add helper functions for shash implementations of BLAKE2s to include/crypto/internal/blake2s.h, taking advantage of __blake2s_update() and __blake2s_final() that were added by the previous patch to share more code between the library and shash implementations. crypto_blake2s_setkey() and crypto_blake2s_init() are usable as shash_alg::setkey and shash_alg::init directly, while crypto_blake2s_update() and crypto_blake2s_final() take an extra 'blake2s_compress_t' function pointer parameter. This allows the implementation of the compression function to be overridden, which is the only part that optimized implementations really care about. The new functions are inline functions (similar to those in sha1_base.h, sha256_base.h, and sm3_base.h) because this avoids needing to add a new module blake2s_helpers.ko, they aren't *too* long, and this avoids indirect calls which are expensive these days. Note that they can't go in blake2s_generic.ko, as that would require selecting CRYPTO_BLAKE2S from CRYPTO_BLAKE2S_X86, which would cause a recursive dependency. Finally, use these new helper functions in the x86 implementation of BLAKE2s. (This part should be a separate patch, but unfortunately the x86 implementation used the exact same function names like "crypto_blake2s_update()", so it had to be updated at the same time.) Signed-off-by: Eric Biggers <ebiggers@google.com> Acked-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> (cherry picked from commit 8c4a93a1270ddffc7660ae43fa8030ecfe9c06d9) Conflicts: arch/x86/crypto/blake2s-glue.c crypto/blake2s_generic.c (conflict due to this branch not having commit 674f368a952c, "crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN") Bug: 152722841 Bug: 178411248 Change-Id: I9d23b1897cee81fb1704b6eea14d3dc9b1c80fe0 Signed-off-by: Eric Biggers <ebiggers@google.com> |
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8a14e1d839 |
UPSTREAM: crypto: blake2s - move update and final logic to internal/blake2s.h
Move most of blake2s_update() and blake2s_final() into new inline functions __blake2s_update() and __blake2s_final() in include/crypto/internal/blake2s.h so that this logic can be shared by the shash helper functions. This will avoid duplicating this logic between the library and shash implementations. Signed-off-by: Eric Biggers <ebiggers@google.com> Acked-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> (cherry picked from commit 057edc9c8bb2d5ff5b058b521792c392428a0714) Bug: 152722841 Bug: 178411248 Change-Id: Idedf8147914839d5280e5d8eec9013264fbb45f9 Signed-off-by: Eric Biggers <ebiggers@google.com> |
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4c7a6f464d |
UPSTREAM: crypto: blake2s - remove unneeded includes
It doesn't make sense for the generic implementation of BLAKE2s to include <crypto/internal/simd.h> and <linux/jump_label.h>, as these are things that would only be useful in an architecture-specific implementation. Remove these unnecessary includes. Acked-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> (cherry picked from commit df412e7efda1e2c5b5fcb06701bba77434cbd1e8) Bug: 152722841 Bug: 178411248 Change-Id: I8bccb9506d235c2b184b9899ee375fdc12d6b10f Signed-off-by: Eric Biggers <ebiggers@google.com> |
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7537c64845 |
UPSTREAM: crypto: x86/blake2s - define shash_alg structs using macros
The shash_alg structs for the four variants of BLAKE2s are identical except for the algorithm name, driver name, and digest size. So, avoid code duplication by using a macro to define these structs. Acked-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> (cherry picked from commit 1aa90f4cf034ed4f016a02330820ac0551a6c13c) Bug: 152722841 Bug: 178411248 Change-Id: Ibba710056182a609defca0a53133387153f0f63d Signed-off-by: Eric Biggers <ebiggers@google.com> |
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b54930b350 |
UPSTREAM: crypto: blake2s - define shash_alg structs using macros
The shash_alg structs for the four variants of BLAKE2s are identical except for the algorithm name, driver name, and digest size. So, avoid code duplication by using a macro to define these structs. Acked-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> (cherry picked from commit 0d396058f92ae7e5ac62839fed54bc2bba630ab5) Bug: 152722841 Bug: 178411248 Change-Id: I32b3a6c035b18f063ad0e03c43171091ca1490a8 Signed-off-by: Eric Biggers <ebiggers@google.com> |
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05e10b45ed |
UPSTREAM: crypto: lib/blake2s - Move selftest prototype into header file
This patch fixes a missing prototype warning on blake2s_selftest. Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> (cherry picked from commit ce0d5d63e897cc7c3a8fd043c7942fc6a78ec6f4) Bug: 152722841 Change-Id: Ieb19048d60f6c9dc36cefda8b09b3d5c95e9118e Signed-off-by: Eric Biggers <ebiggers@google.com> |
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29ab2a5781 |
UPSTREAM: crypto: blake2b - Fix clang optimization for ARMv7-M
When building for ARMv7-M, clang-9 or higher tries to unroll some loops,
which ends up confusing the register allocator to the point of generating
rather bad code and using more than the warning limit for stack frames:
warning: stack frame size of 1200 bytes in function 'blake2b_compress' [-Wframe-larger-than=]
Forcing it to not unroll the final loop avoids this problem.
Fixes: 91d689337fe8 ("crypto: blake2b - add blake2b generic implementation")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
(cherry picked from commit 0c0408e86dbe8f44d4b27bf42130e8ac905361d6)
Bug: 178411248
Change-Id: I71ee6df844bdbace9f06342a61322c7494533564
Signed-off-by: Eric Biggers <ebiggers@google.com>
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27c00daf70 |
UPSTREAM: crypto: blake2b - rename tfm context and _setkey callback
The TFM context can be renamed to a more appropriate name and the local varaibles as well, using 'tctx' which seems to be more common than 'mctx'. The _setkey callback was the last one without the blake2b_ prefix, rename that too. Signed-off-by: David Sterba <dsterba@suse.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> (cherry picked from commit c433a1a8572eceb7c45dd85d93fec6946b71bb72) Bug: 178411248 Change-Id: I8b7dfa5779ee6f76bb7e21572d29df1310705485 Signed-off-by: Eric Biggers <ebiggers@google.com> |
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196f7b5134 |
UPSTREAM: crypto: blake2b - merge _update to api callback
Now that there's only one call to blake2b_update, we can merge it to the callback and simplify. The empty input check is split and the rest of code un-indented. Signed-off-by: David Sterba <dsterba@suse.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> (cherry picked from commit 0b4b5f10ac1ffb7f51db1832d189c33955c0d4c1) Bug: 178411248 Change-Id: Ic260edcee45116ac1a9f03f2792fe577a2c629c6 Signed-off-by: Eric Biggers <ebiggers@google.com> |
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a623362717 |
UPSTREAM: crypto: blake2b - open code set last block helper
The helper is trival and called once, inlining makes things simpler. There's a comment to tie it back to the idea behind the code. Signed-off-by: David Sterba <dsterba@suse.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> (cherry picked from commit a2e4bdce0f6e69c6cf9e460c4fe158bcc0db351f) Bug: 178411248 Change-Id: Iba1276dfcdb29240206f66bf98902d0e587a590f Signed-off-by: Eric Biggers <ebiggers@google.com> |
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00e77739a2 |
UPSTREAM: crypto: blake2b - delete unused structs or members
All the code for param block has been inlined, last_node and outlen from the state are not used or have become redundant due to other code. Remove it. Signed-off-by: David Sterba <dsterba@suse.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> (cherry picked from commit d063d6327e7de18e16e4742579a0ff759c3889fb) Bug: 178411248 Change-Id: Ia7090fe3162495abae29b86f37e53ebf02414fe2 Signed-off-by: Eric Biggers <ebiggers@google.com> |
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f03f8096dc |
UPSTREAM: crypto: blake2b - simplify key init
The keyed init writes the key bytes to the input buffer and does an update. We can do that in two ways: fill the buffer and update immediatelly. This is what current blake2b_init_key does. Any other following _update or _final will continue from the updated state. The other way is to write the key and set the number of bytes to process at the next _update or _final, lazy evaluation. Which leads to the the simplified code in this patch. Signed-off-by: David Sterba <dsterba@suse.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> (cherry picked from commit e87e484d60b0da8302b45f27fe32af1cea02c8d2) Bug: 178411248 Change-Id: I90652bb41d252af9503d5976ce32b93e2610debf Signed-off-by: Eric Biggers <ebiggers@google.com> |
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fdb0b24608 |
UPSTREAM: crypto: blake2b - merge blake2 init to api callback
The call chain from blake2b_init can be simplified because the param block is effectively zeros, besides the key. - blake2b_init0 zeroes state and sets IV - blake2b_init sets up param block with defaults (key and some 1s) - init with key, write it to the input buffer and recalculate state So the compact way is to zero out the state and initialize index 0 of the state directly with the non-zero values and the key. Signed-off-by: David Sterba <dsterba@suse.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> (cherry picked from commit e374969565472824eba4669dea4a23ad2edb414f) Bug: 178411248 Change-Id: I797e941bf90262f6cf334c100a91e5b90dc00a2c Signed-off-by: Eric Biggers <ebiggers@google.com> |
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75973ecd9d |
UPSTREAM: crypto: blake2b - merge _final implementation to callback
blake2b_final is called only once, merge it to the crypto API callback and simplify. This avoids the temporary buffer and swaps the bytes of internal buffer. Signed-off-by: David Sterba <dsterba@suse.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> (cherry picked from commit 086db43b5a2281f7ce7d8a67a171b91e1e8fe0ec) Bug: 178411248 Change-Id: I7c5e2d9d931d463ada7573e66268f7b93a2d40a4 Signed-off-by: Eric Biggers <ebiggers@google.com> |
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fbbe069bbb |
BACKPORT: crypto: testmgr - add test vectors for blake2b
Test vectors for blake2b with various digest sizes. As the algorithm is
the same up to the digest calculation, the key and input data length is
distributed in a way that tests all combinanions of the two over the
digest sizes.
Based on the suggestion from Eric, the following input sizes are tested
[0, 1, 7, 15, 64, 247, 256], where blake2b blocksize is 128, so the
padded and the non-padded input buffers are tested.
blake2b-160 blake2b-256 blake2b-384 blake2b-512
---------------------------------------------------
len=0 | klen=0 klen=1 klen=32 klen=64
len=1 | klen=32 klen=64 klen=0 klen=1
len=7 | klen=64 klen=0 klen=1 klen=32
len=15 | klen=1 klen=32 klen=64 klen=0
len=64 | klen=0 klen=1 klen=32 klen=64
len=247 | klen=32 klen=64 klen=0 klen=1
len=256 | klen=64 klen=0 klen=1 klen=32
Where key:
- klen=0: empty key
- klen=1: 1 byte value 0x42, 'B'
- klen=32: first 32 bytes of the default key, sequence 00..1f
- klen=64: default key, sequence 00..3f
The unkeyed vectors are ordered before keyed, as this is required by
testmgr.
CC: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
(cherry picked from commit a1afe27492a408d45421a1812064235691303fa1)
Conflicts:
crypto/testmgr.c
crypto/testmgr.h
(resolved conflicts due to blake2s having been backported already)
Bug: 178411248
Change-Id: I5d6e1c16b7be981f4912264cd67dc1dad20b6bec
Signed-off-by: Eric Biggers <ebiggers@google.com>
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9cd856934e |
BACKPORT: crypto: blake2b - add blake2b generic implementation
The patch brings support of several BLAKE2 variants (2b with various digest lengths). The keyed digest is supported, using tfm->setkey call. The in-tree user will be btrfs (for checksumming), we're going to use the BLAKE2b-256 variant. The code is reference implementation taken from the official sources and modified in terms of kernel coding style (whitespace, comments, uintXX_t -> uXX types, removed unused prototypes and #ifdefs, removed testing code, changed secure_zero_memory -> memzero_explicit, used own helpers for unaligned reads/writes and rotations). Further changes removed sanity checks of key length or output size, these values are verified in the crypto API callbacks or hardcoded in shash_alg and not exposed to users. Signed-off-by: David Sterba <dsterba@suse.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> (cherry picked from commit 91d689337fe8b7703608a2ec39aae700b99f3933) Conflicts: crypto/Kconfig crypto/Makefile (trivial conflicts due to blake2s having been backported already) Bug: 178411248 Change-Id: Ic4c2314b146434a5842facf56e58d3602bacc7d5 Signed-off-by: Eric Biggers <ebiggers@google.com> |
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3e82f8af26 |
UPSTREAM: crypto: blake2s - x86_64 SIMD implementation
These implementations from Samuel Neves support AVX and AVX-512VL. Originally this used AVX-512F, but Skylake thermal throttling made AVX-512VL more attractive and possible to do with negligable difference. Bug: 152722841 Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Signed-off-by: Samuel Neves <sneves@dei.uc.pt> Co-developed-by: Samuel Neves <sneves@dei.uc.pt> [ardb: move to arch/x86/crypto, wire into lib/crypto framework] Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: I25f5770976a2681e24a1e762360c2a9900e9a62c |
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22bff7a3f6 |
UPSTREAM: crypto: blake2s - implement generic shash driver
Wire up our newly added Blake2s implementation via the shash API. Bug: 152722841 Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: I115c2963e90a1a1d2734865d8a2c2e6df5008537 |
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43ec9b95a3 |
UPSTREAM: crypto: testmgr - add test cases for Blake2s
As suggested by Eric for the Blake2b implementation contributed by
David, introduce a set of test vectors for Blake2s covering different
digest and key sizes.
blake2s-128 blake2s-160 blake2s-224 blake2s-256
---------------------------------------------------
len=0 | klen=0 klen=1 klen=16 klen=32
len=1 | klen=16 klen=32 klen=0 klen=1
len=7 | klen=32 klen=0 klen=1 klen=16
len=15 | klen=1 klen=16 klen=32 klen=0
len=64 | klen=0 klen=1 klen=16 klen=32
len=247 | klen=16 klen=32 klen=0 klen=1
len=256 | klen=32 klen=0 klen=1 klen=16
Bug: 152722841
Cc: David Sterba <dsterba@suse.com>
Cc: Eric Biggers <ebiggers@google.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I3476494a9cd5a37a1c539704fa23cf3bb61b444c
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192edcb3df |
UPSTREAM: crypto: blake2s - generic C library implementation and selftest
The C implementation was originally based on Samuel Neves' public domain reference implementation but has since been heavily modified for the kernel. We're able to do compile-time optimizations by moving some scaffolding around the final function into the header file. Information: https://blake2.net/ Bug: 152722841 Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Signed-off-by: Samuel Neves <sneves@dei.uc.pt> Co-developed-by: Samuel Neves <sneves@dei.uc.pt> [ardb: - move from lib/zinc to lib/crypto - remove simd handling - rewrote selftest for better coverage - use fixed digest length for blake2s_hmac() and rename to blake2s256_hmac() ] Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: I009a9fb70d34dcff777e7d21882a59819e2bd137 |
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078cebb3f5 |
UPSTREAM: crypto: lib - tidy up lib/crypto Kconfig and Makefile
In preparation of introducing a set of crypto library interfaces, tidy up the Makefile and split off the Kconfig symbols into a separate file. Bug: 152722841 Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> (cherry picked from commit 746b2e024c67aa605ac12d135cd7085a49cf9dc4) Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: Idc1e996e91db5909dd8f1d2d52c1727c2de2b1f6 |
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160ab93103 |
ANDROID: ion heap: init ion heaps in subsys_initcall
Some built-in modules will failed to use ion heap to allocate memory if the ion heap drivers are too late to be initialized. To fix this issue, move initialization of ion heap drivers in subsys_initcall() which is more earlier to be called. Bug: 203487618 Signed-off-by: Shuosheng Huang <huangshuosheng@allwinnertech.com> Change-Id: If120225fd6c3b665053857cc9345db4521e76cf8 (cherry picked from commit eb4a5a5dbd5bcc33db06d4515653b7f67a2e927e) |
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3dbc1d366e |
UPSTREAM: ovl: simplify file splice
commit 82a763e61e2b601309d696d4fa514c77d64ee1be upstream.
generic_file_splice_read() and iter_file_splice_write() will call back into
f_op->iter_read() and f_op->iter_write() respectively. These already do
the real file lookup and cred override. So the code in ovl_splice_read()
and ovl_splice_write() is redundant.
In addition the ovl_file_accessed() call in ovl_splice_write() is
incorrect, though probably harmless.
Fix by calling generic_file_splice_read() and iter_file_splice_write()
directly.
Bug: 203035944
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
[reported to resolve issues with 1a980b8cbf00 ("ovl: add splice file read write helper")]
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Change-Id: I1b3c7610b27faad8eefa91dead167ceaeb4ff0d8
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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5b84549191 |
Merge tag 'android11-5.4.147_r00' android11-5.4
This is the merge of the upstream LTS release of 5.4.147 into the android11-5.4 branch. It contains the following commits: |
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0dedfe3f54 |
ANDROID: ABI: update allowed list for galaxy
Leaf changes summary: 1 artifact changed Changed leaf types summary: 0 leaf type changed Removed/Changed/Added functions summary: 0 Removed, 0 Changed, 1 Added function Removed/Changed/Added variables summary: 0 Removed, 0 Changed, 0 Added variable 1 Added function: [A] 'function int regulatory_set_wiphy_regd_sync_rtnl(wiphy*, ieee80211_regdomain*)' Bug: 203121344 Signed-off-by: Mincheol Jeong <mc0115.jeong@samsung.corp-partner.google.com> Change-Id: I5f5c4d14eebbfb5393bce35484ece9c863850ff1 |
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008930a84e |
ANDROID: ABI: Update allowed list for QCOM
Leaf changes summary: 1 artifact changed Changed leaf types summary: 0 leaf type changed Removed/Changed/Added functions summary: 0 Removed, 0 Changed, 1 Added function Removed/Changed/Added variables summary: 0 Removed, 0 Changed, 0 Added variable 1 Added function: [A] 'function void __sdhci_set_timeout(sdhci_host*, mmc_command*)' Bug: 203221370 Change-Id: I8ccdd4ceb851675f65a9428f62f563c8905631d0 Signed-off-by: Srinivasarao P <quic_spathi@quicinc.com> |
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05cd3c592d |
ANDROID: distribute Module.symvers
Module.symvers contains the exported symbols with additional metadata, which can be used to build kernel modules that use/need them. Bug: 202914651 Signed-off-by: Isaac Chen <ycchen@google.com> Change-Id: Ife00f368723f08bfdbe56cb1737ee328e2749d00 |
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6eea8a6d1d |
UPSTREAM: usb: max-3421: Prevent corruption of freed memory
commit b5fdf5c6e6bee35837e160c00ac89327bdad031b upstream.
The MAX-3421 USB driver remembers the state of the USB toggles for a
device/endpoint. To save SPI writes, this was only done when a new
device/endpoint was being used. Unfortunately, if the old device was
removed, this would cause writes to freed memory.
To fix this, a simpler scheme is used. The toggles are read from
hardware when a URB is completed, and the toggles are always written to
hardware when any URB transaction is started. This will cause a few more
SPI transactions, but no causes kernel panics.
Fixes:
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