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| author | Jia-Ju Bai <baijiaju1990@gmail.com> | 2018-09-01 16:12:10 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-09-26 08:36:37 +0200 |
| commit | f7bf6ac324290ccd193e7d9afdef0f9fa228de48 (patch) | |
| tree | 690f21abcac61ef38f2fa8fe0c72bd3dce8ea1da /kernel/ptrace.c | |
| parent | 71d2d4790cbd4052d5f7f504d347088d9c242a4b (diff) | |
usb: cdc-wdm: Fix a sleep-in-atomic-context bug in service_outstanding_interrupt()
commit 6e22e3af7bb3a7b9dc53cb4687659f6e63fca427 upstream.
wdm_in_callback() is a completion handler function for the USB driver.
So it should not sleep. But it calls service_outstanding_interrupt(),
which calls usb_submit_urb() with GFP_KERNEL.
To fix this bug, GFP_KERNEL is replaced with GFP_ATOMIC.
This bug is found by my static analysis tool DSAC.
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/ptrace.c')
0 files changed, 0 insertions, 0 deletions