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author | Jia-Ju Bai <baijiaju1990@gmail.com> | 2018-04-10 11:31:46 +0300 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-04-23 11:57:06 +0300 |
commit | 13eac05b0581e6f9f5aec93a8ab64c83d7c311bf (patch) | |
tree | 1d4fc86945ab00c78c598cf7930d30555ca7c53f /virt | |
parent | 5909c0bf9c7a17c52cf357bf5e752a76b8d72568 (diff) | |
download | linux-13eac05b0581e6f9f5aec93a8ab64c83d7c311bf.tar.xz |
tty: ipwireless: Replace GFP_ATOMIC with GFP_KERNEL in ipwireless_network_create
ipwireless_network_create() is never called in atomic context.
The call chain ending up at ipwireless_network_create() is:
[1] ipwireless_network_create() <- config_ipwireless() <-
ipwireless_attach()
ipwireless_attach() is only set as ".probe" in struct pcmcia_driver.
Despite never getting called from atomic context,
ipwireless_network_create() calls kzalloc() with GFP_ATOMIC,
which does not sleep for allocation.
GFP_ATOMIC is not necessary and can be replaced with GFP_KERNEL,
which can sleep and improve the possibility of sucessful allocation.
This is found by a static analysis tool named DCNS written by myself.
And I also manually check it.
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'virt')
0 files changed, 0 insertions, 0 deletions