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Ovidiu Panait 19d267d9fa crypto: sun8i-ce-cipher - fix error handling in sun8i_ce_cipher_prepare() 
[ Upstream commit f31adc3e35 ]

Fix two DMA cleanup issues on the error path in sun8i_ce_cipher_prepare():

1] If dma_map_sg() fails for areq->dst, the device driver would try to free
   DMA memory it has not allocated in the first place. To fix this, on the
   "theend_sgs" error path, call dma unmap only if the corresponding dma
   map was successful.

2] If the dma_map_single() call for the IV fails, the device driver would
   try to free an invalid DMA memory address on the "theend_iv" path:
   ------------[ cut here ]------------
   DMA-API: sun8i-ce 1904000.crypto: device driver tries to free an invalid DMA memory address
   WARNING: CPU: 2 PID: 69 at kernel/dma/debug.c:968 check_unmap+0x123c/0x1b90
   Modules linked in: skcipher_example(O+)
   CPU: 2 UID: 0 PID: 69 Comm: 1904000.crypto- Tainted: G           O        6.15.0-rc3+ #24 PREEMPT
   Tainted: [O]=OOT_MODULE
   Hardware name: OrangePi Zero2 (DT)
   pc : check_unmap+0x123c/0x1b90
   lr : check_unmap+0x123c/0x1b90
   ...
   Call trace:
    check_unmap+0x123c/0x1b90 (P)
    debug_dma_unmap_page+0xac/0xc0
    dma_unmap_page_attrs+0x1f4/0x5fc
    sun8i_ce_cipher_do_one+0x1bd4/0x1f40
    crypto_pump_work+0x334/0x6e0
    kthread_worker_fn+0x21c/0x438
    kthread+0x374/0x664
    ret_from_fork+0x10/0x20
   ---[ end trace 0000000000000000 ]---

To fix this, check for !dma_mapping_error() before calling
dma_unmap_single() on the "theend_iv" path.

Fixes: 06f751b613 ("crypto: allwinner - Add sun8i-ce Crypto Engine")
Signed-off-by: Ovidiu Panait <ovidiu.panait.oss@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-06-19 15:31:27 +02:00
arch perf/x86/amd/uncore: Prevent UMC counters from saturating 2025-06-19 15:31:26 +02:00
block block: fix adding folio to bio 2025-06-10 07:12:59 -04:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2024-09-20 19:52:48 +03:00
crypto crypto: algif_hash - fix double free in hash_accept 2025-05-29 11:03:18 +02:00
Documentation dt-bindings: phy: imx8mq-usb: fix fsl,phy-tx-vboost-level-microvolt property 2025-06-10 07:13:00 -04:00
drivers crypto: sun8i-ce-cipher - fix error handling in sun8i_ce_cipher_prepare() 2025-06-19 15:31:27 +02:00
fs gfs2: gfs2_create_inode error handling fix 2025-06-19 15:31:26 +02:00
include NFS: Avoid flushing data while holding directory locks in nfs_rename() 2025-06-04 14:43:53 +02:00
init rust: clean Rust 1.88.0's unnecessary_transmutes lint 2025-05-18 08:24:51 +02:00
io_uring io_uring: fix overflow resched cqe reordering 2025-05-29 11:03:17 +02:00
ipc ipc: fix memleak if msg_init_ns failed in create_ipc_ns 2024-12-05 14:03:02 +01:00
kernel perf/core: Fix broken throttling when max_samples_per_tick=1 2025-06-19 15:31:27 +02:00
lib crypto: lzo - Fix compression buffer overrun 2025-05-29 11:02:25 +02:00
LICENSES LICENSES: add 0BSD license text 2024-09-01 20:43:24 -07:00
mm mm: vmalloc: only zero-init on vrealloc shrink 2025-05-29 11:03:23 +02:00
net net_sched: hfsc: Address reentrant enqueue adding class to eltree twice 2025-06-04 14:43:51 +02:00
rust rust: clean Rust 1.88.0's clippy::uninlined_format_args lint 2025-05-18 08:24:57 +02:00
samples samples/bpf: Fix compilation failure for samples/bpf on LoongArch Fedora 2025-05-29 11:02:01 +02:00
scripts kbuild: Properly disable -Wunterminated-string-initialization for clang 2025-05-29 11:03:25 +02:00
security smack: Revert "smackfs: Added check catlen" 2025-05-29 11:02:48 +02:00
sound ALSA: hda/realtek - restore auto-mute mode for Dell Chrome platform 2025-06-04 14:43:53 +02:00
tools tools/x86/kcpuid: Fix error handling 2025-06-19 15:31:25 +02:00
usr kbuild: hdrcheck: fix cross build with clang 2025-03-13 13:02:18 +01:00
virt KVM: Add member to struct kvm_gfn_range to indicate private/shared 2025-05-22 14:29:36 +02:00
.clang-format clang-format: Update with v6.11-rc1's for_each macro list 2024-08-02 13:20:31 +02:00
.clippy.toml rust: clean Rust 1.88.0's warning about clippy::disallowed_macros configuration 2025-05-18 08:24:51 +02:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.editorconfig .editorconfig: remove trim_trailing_whitespace option 2024-06-13 16:47:52 +02:00
.get_maintainer.ignore Add Jeff Kirsher to .get_maintainer.ignore 2024-03-08 11:36:54 +00:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore rust: introduce .clippy.toml 2025-03-13 13:01:42 +01:00
.mailmap mailmap: add entry for Thorsten Blum 2024-11-07 14:14:59 -08:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: Remove self from DSA entry 2024-11-03 12:52:38 -08:00
Kbuild Kbuild updates for v6.1 2022-10-10 12:00:45 -07:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS MAINTAINERS: Update Alexey Makhalov's email address 2025-05-22 14:29:46 +02:00
Makefile Linux 6.12.33 2025-06-10 07:13:00 -04:00
README README: Fix spelling 2024-03-18 03:36:32 -06:00

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.