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zhenwei pi 25c1ca6eca nvme-rdma: handle unexpected nvme completion data length 
Receiving a zero length message leads to the following warnings because
the CQE is processed twice:

refcount_t: underflow; use-after-free.
WARNING: CPU: 0 PID: 0 at lib/refcount.c:28

RIP: 0010:refcount_warn_saturate+0xd9/0xe0
Call Trace:
 <IRQ>
 nvme_rdma_recv_done+0xf3/0x280 [nvme_rdma]
 __ib_process_cq+0x76/0x150 [ib_core]
 ...

Sanity check the received data length, to avoids this.

Thanks to Chao Leng & Sagi for suggestions.

Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
2020-10-27 10:00:05 +01:00
arch
treewide: Convert macro and uses of __section(foo) to __section("foo")
2020-10-25 14:51:49 -07:00
block
blk-cgroup: Pre-allocate tree node on blkg_conf_prep
2020-10-26 07:57:47 -06:00
certs
.gitignore: add SPDX License Identifier
2020-03-25 11:50:48 +01:00
crypto
drivers-5.10-2020-10-12
2020-10-13 13:04:41 -07:00
Documentation
xen: branch for v5.10-rc1c
2020-10-25 10:55:35 -07:00
drivers
nvme-rdma: handle unexpected nvme completion data length
2020-10-27 10:00:05 +01:00
fs
treewide: Convert macro and uses of __section(foo) to __section("foo")
2020-10-25 14:51:49 -07:00
include
treewide: Convert macro and uses of __section(foo) to __section("foo")
2020-10-25 14:51:49 -07:00
init
linux-kselftest-kunit-5.10-rc1
2020-10-18 14:45:59 -07:00
ipc
ipc: adjust proc_ipc_sem_dointvec definition to match prototype
2020-09-05 12:14:29 -07:00
kernel
treewide: Convert macro and uses of __section(foo) to __section("foo")
2020-10-25 14:51:49 -07:00
lib
random32: make prandom_u32() less predictable
2020-10-25 10:40:08 -07:00
LICENSES
LICENSES/deprecated: add Zlib license text
2020-09-16 14:33:49 +02:00
mm
Refactored code for 5.10:
2020-10-23 11:33:41 -07:00
net
mm: remove kzfree() compatibility definition
2020-10-25 11:39:02 -07:00
samples
bpf, libbpf: Guard bpf inline asm from bpf_tail_call_static
2020-10-22 01:46:52 +02:00
scripts
treewide: Convert macro and uses of __section(foo) to __section("foo")
2020-10-25 14:51:49 -07:00
security
SafeSetID changes for v5.10
2020-10-25 10:45:26 -07:00
sound
ARM: SoC platform updates
2020-10-24 10:33:08 -07:00
tools
treewide: Convert macro and uses of __section(foo) to __section("foo")
2020-10-25 14:51:49 -07:00
usr
Merge branch 'work.fdpic' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2020-08-07 13:29:39 -07:00
virt
kvm: x86/mmu: Support dirty logging for the TDP MMU
2020-10-23 03:42:13 -04:00
.clang-format
RDMA 5.10 pull request
2020-10-17 11:18:18 -07:00
.cocciconfig
…
.get_maintainer.ignore
Opt out of scripts/get_maintainer.pl
2019-05-16 10:53:40 -07:00
.gitattributes
.gitattributes: use 'dts' diff driver for dts files
2019-12-04 19:44:11 -08:00
.gitignore
.gitignore: docs: ignore sphinx_*/ directories
2020-09-10 10:44:31 -06:00
.mailmap
MAINTAINERS: jarkko.sakkinen@linux.intel.com -> jarkko@kernel.org
2020-10-16 11:11:19 -07:00
COPYING
COPYING: state that all contributions really are covered by this file
2020-02-10 13:32:20 -08:00
CREDITS
networking changes for the 5.10 merge window
2020-10-15 18:42:13 -07:00
Kbuild
kbuild: rename hostprogs-y/always to hostprogs/always-y
2020-02-04 01:53:07 +09:00
Kconfig
kbuild: ensure full rebuild when the compiler is updated
2020-05-12 13:28:33 +09:00
MAINTAINERS
ARM: Devicetree updates
2020-10-24 10:44:18 -07:00
Makefile
Linux 5.10-rc1
2020-10-25 15:14:11 -07:00
README
Drop all 00-INDEX files from Documentation/
2018-09-09 15:08:58 -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 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.
Description
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