Chaitanya Kulkarni a836ca33c5 nvme-core: fix memory leak in dhchap_secret_store
Free dhchap_secret in nvme_ctrl_dhchap_secret_store() before we return
fix following kmemleack:-

unreferenced object 0xffff8886376ea800 (size 64):
  comm "check", pid 22048, jiffies 4344316705 (age 92.199s)
  hex dump (first 32 bytes):
    44 48 48 43 2d 31 3a 30 30 3a 6e 78 72 35 4b 67  DHHC-1:00:nxr5Kg
    75 58 34 75 6f 41 78 73 4a 61 34 63 2f 68 75 4c  uX4uoAxsJa4c/huL
  backtrace:
    [<0000000030ce5d4b>] __kmalloc+0x4b/0x130
    [<000000009be1cdc1>] nvme_ctrl_dhchap_secret_store+0x8f/0x160 [nvme_core]
    [<00000000ac06c96a>] kernfs_fop_write_iter+0x12b/0x1c0
    [<00000000437e7ced>] vfs_write+0x2ba/0x3c0
    [<00000000f9491baf>] ksys_write+0x5f/0xe0
    [<000000001c46513d>] do_syscall_64+0x3b/0x90
    [<00000000ecf348fe>] entry_SYSCALL_64_after_hwframe+0x72/0xdc
unreferenced object 0xffff8886376eaf00 (size 64):
  comm "check", pid 22048, jiffies 4344316736 (age 92.168s)
  hex dump (first 32 bytes):
    44 48 48 43 2d 31 3a 30 30 3a 6e 78 72 35 4b 67  DHHC-1:00:nxr5Kg
    75 58 34 75 6f 41 78 73 4a 61 34 63 2f 68 75 4c  uX4uoAxsJa4c/huL
  backtrace:
    [<0000000030ce5d4b>] __kmalloc+0x4b/0x130
    [<000000009be1cdc1>] nvme_ctrl_dhchap_secret_store+0x8f/0x160 [nvme_core]
    [<00000000ac06c96a>] kernfs_fop_write_iter+0x12b/0x1c0
    [<00000000437e7ced>] vfs_write+0x2ba/0x3c0
    [<00000000f9491baf>] ksys_write+0x5f/0xe0
    [<000000001c46513d>] do_syscall_64+0x3b/0x90
    [<00000000ecf348fe>] entry_SYSCALL_64_after_hwframe+0x72/0xdc

Fixes: f50fff73d6 ("nvme: implement In-Band authentication")
Signed-off-by: Chaitanya Kulkarni <kch@nvidia.com>
Tested-by: Yi Zhang <yi.zhang@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Keith Busch <kbusch@kernel.org>
2023-06-12 10:33:02 -07:00
2023-05-24 08:42:17 -06:00
2022-09-28 09:02:20 +02:00
2023-05-14 12:51:40 -07:00

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.
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