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| author | Linyu Yuan <quic_linyyuan@quicinc.com> | 2022-06-10 20:17:57 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-06-10 14:45:38 +0200 |
| commit | fb1f16d74e263baa4ad11e31e28b68f144aa55ed (patch) | |
| tree | fea4ba8532053b0ebbbab1992ba82c9ebcecf5a3 /drivers/usb/serial/io_ionsp.h | |
| parent | 802dcafc420af536fcde1b44ac51ca211f4ec673 (diff) | |
| download | linux-fb1f16d74e263baa4ad11e31e28b68f144aa55ed.tar.bz2 | |
usb: gadget: f_fs: change ep->status safe in ffs_epfile_io()
If a task read/write data in blocking mode, it will wait the completion
in ffs_epfile_io(), if function unbind occurs, ffs_func_unbind() will
kfree ffs ep, once the task wake up, it still dereference the ffs ep to
obtain the request status.
Fix it by moving the request status to io_data which is stack-safe.
Cc: <stable@vger.kernel.org> # 5.15
Reported-by: Michael Wu <michael@allwinnertech.com>
Tested-by: Michael Wu <michael@allwinnertech.com>
Reviewed-by: John Keeping <john@metanate.com>
Signed-off-by: Linyu Yuan <quic_linyyuan@quicinc.com>
Link: https://lore.kernel.org/r/1654863478-26228-2-git-send-email-quic_linyyuan@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/serial/io_ionsp.h')
0 files changed, 0 insertions, 0 deletions