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| author | Paul Fulghum <paulkf@microgate.com> | 2019-01-01 12:28:53 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-01-18 13:27:54 +0100 |
| commit | fc01d8c61ce02c034e67378cd3e645734bc18c8c (patch) | |
| tree | 12229d9297234109fa24748654ea15c908c6073e /drivers/tty/synclinkmp.c | |
| parent | 352c4cf40c4a7d439fa5d30aa2160f54b394da82 (diff) | |
| download | kernel_replicant_linux-fc01d8c61ce02c034e67378cd3e645734bc18c8c.tar.gz kernel_replicant_linux-fc01d8c61ce02c034e67378cd3e645734bc18c8c.tar.bz2 kernel_replicant_linux-fc01d8c61ce02c034e67378cd3e645734bc18c8c.zip | |
tty/n_hdlc: fix __might_sleep warning
Fix __might_sleep warning[1] in tty/n_hdlc.c read due to copy_to_user
call while current is TASK_INTERRUPTIBLE. This is a false positive
since the code path does not depend on current state remaining
TASK_INTERRUPTIBLE. The loop breaks out and sets TASK_RUNNING after
calling copy_to_user.
This patch supresses the warning by setting TASK_RUNNING before calling
copy_to_user.
[1] https://syzkaller.appspot.com/bug?id=17d5de7f1fcab794cb8c40032f893f52de899324
Signed-off-by: Paul Fulghum <paulkf@microgate.com>
Reported-by: syzbot <syzbot+c244af085a0159d22879@syzkaller.appspotmail.com>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: stable <stable@vger.kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/synclinkmp.c')
0 files changed, 0 insertions, 0 deletions