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Filename Latest commit message Latest commit date
Herbert Xu f2b639b2aa crc-t10dif: Fix potential crypto notify dead-lock
[ Upstream commit 3906f640224dbe7714b52b66d7d68c0812808e19 ]

The crypto notify call occurs with a read mutex held so you must
not do any substantial work directly.  In particular, you cannot
call crypto_alloc_* as they may trigger further notifications
which may dead-lock in the presence of another writer.

This patch fixes this by postponing the work into a work queue and
taking the same lock in the module init function.

While we're at it this patch also ensures that all RCU accesses are
marked appropriately (tested with sparse).

Finally this also reveals a race condition in module param show
function as it may be called prior to the module init function.
It's fixed by testing whether crct10dif_tfm is NULL (this is true
iff the init function has not completed assuming fallback is false).

Fixes: 11dcb1037f ("crc-t10dif: Allow current transform to be...")
Fixes: b76377543b ("crc-t10dif: Pick better transform if one...")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-08-19 08:15:54 +02:00
arch arm64: dts: rockchip: fix rk3399-puma gmac reset gpio 2020-08-19 08:15:54 +02:00
block block: fix get_max_segment_size() overflow on 32bit arch 2020-07-22 09:33:17 +02:00
certs
crypto keys: asymmetric: fix error return code in software_key_query() 2020-07-22 09:33:04 +02:00
Documentation doc: dt: bindings: usb: dwc3: Update entries for disabling SS instances in park mode 2020-07-22 09:32:59 +02:00
drivers EDAC: Fix reference count leaks 2020-08-19 08:15:54 +02:00
fs fs/io_uring.c: Fix uninitialized variable is referenced in io_submit_sqe 2020-08-19 08:15:53 +02:00
include tracepoint: Mark __tracepoint_string's __used 2020-08-19 08:15:53 +02:00
init x86: Fix early boot crash on gcc-10, third try 2020-05-20 08:20:34 +02:00
ipc ipc/util.c: sysvipc_find_ipc() incorrectly updates position index 2020-05-20 08:20:16 +02:00
kernel sched: correct SD_flags returned by tl->sd_flags() 2020-08-19 08:15:54 +02:00
lib crc-t10dif: Fix potential crypto notify dead-lock 2020-08-19 08:15:54 +02:00
LICENSES
mm mm/filemap.c: don't bother dropping mmap_sem for zero size readahead 2020-08-05 09:59:41 +02:00
net nfsd: Fix NFSv4 READ on RDMA when using readv 2020-08-11 15:33:42 +02:00
samples samples/vfs: avoid warning in statx override 2020-07-09 09:37:54 +02:00
scripts scripts: add dummy report mode to add_namespace.cocci 2020-08-11 15:33:35 +02:00
security ima: move APPRAISE_BOOTPARAM dependency on ARCH_POLICY to runtime 2020-08-11 15:33:41 +02:00
sound ALSA: hda: fix NULL pointer dereference during suspend 2020-08-11 15:33:37 +02:00
tools selftests/net: relax cpu affinity requirement in msg_zerocopy test 2020-08-11 15:33:41 +02:00
usr initramfs: restore default compression behavior 2020-04-08 09:08:38 +02:00
virt KVM: arm64: Don't inherit exec permission across page-table levels 2020-08-05 09:59:51 +02:00
.clang-format clang-format: Update with the latest for_each macro list 2019-08-31 10:00:51 +02:00
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore Modules updates for v5.4 2019-09-22 10:34:46 -07:00
.mailmap ARM: SoC fixes 2019-11-10 13:41:59 -08:00
COPYING
CREDITS MAINTAINERS: Remove Simon as Renesas SoC Co-Maintainer 2019-10-10 08:12:51 -07:00
Kbuild kbuild: do not descend to ./Kbuild when cleaning 2019-08-21 21:03:58 +09:00
Kconfig
MAINTAINERS MAINTAINERS: Update drm/i915 bug filing URL 2020-02-28 17:22:19 +01:00
Makefile Linux 5.4.58 2020-08-11 15:33:42 +02:00
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 Restructured Text 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.