lkml.org 
[lkml]   [2021]   [Nov]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH 5.15 033/179] staging: r8188eu: use GFP_ATOMIC under spinlock
    Date
    From: Michael Straube <straube.linux@gmail.com>

    commit 4a293eaf92a510ff688dc7b3f0815221f99c9d1b upstream.

    In function rtw_report_sec_ie() kzalloc() is called under a spinlock,
    so the allocation have to be atomic.

    Call tree:

    -> rtw_select_and_join_from_scanned_queue() <- takes a spinlock
    -> rtw_joinbss_cmd()
    -> rtw_restruct_sec_ie()
    -> rtw_report_sec_ie()

    Fixes: 2b42bd58b321 ("staging: r8188eu: introduce new os_dep dir for RTL8188eu driver")
    Cc: stable <stable@vger.kernel.org>
    Signed-off-by: Michael Straube <straube.linux@gmail.com>
    Link: https://lore.kernel.org/r/20211108105537.31655-1-straube.linux@gmail.com
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    drivers/staging/r8188eu/os_dep/mlme_linux.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/drivers/staging/r8188eu/os_dep/mlme_linux.c
    +++ b/drivers/staging/r8188eu/os_dep/mlme_linux.c
    @@ -114,7 +114,7 @@ void rtw_report_sec_ie(struct adapter *a

    buff = NULL;
    if (authmode == _WPA_IE_ID_) {
    - buff = kzalloc(IW_CUSTOM_MAX, GFP_KERNEL);
    + buff = kzalloc(IW_CUSTOM_MAX, GFP_ATOMIC);
    if (!buff)
    return;
    p = buff;

    \
     
     \ /
      Last update: 2021-11-29 23:36    [W:6.483 / U:0.032 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site