5.4-stable review patch. If anyone has any objections, please let me know.
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From: Oliver Neukum oneukum@suse.com
[ Upstream commit b98d5000c50544f14bacb248c34e5219fbe81287 ]
In case of a timeout the IO must be cancelled or the next IO using the URB will fail and/or overwrite an operational URB.
The automatic bisection fails because it arrives at a commit that correctly lets the test case run without an error.
Signed-off-by: Oliver Neukum oneukum@suse.com Fixes: e99a7cfe93fd ("[media] iguanair: reuse existing urb callback for command responses") Reported-by: syzbot+ffba8e636870dac0e0c0@syzkaller.appspotmail.com Closes: https://lore.kernel.org/all/66f5cc9a.050a0220.46d20.0004.GAE@google.com/ Tested-by: syzbot+ffba8e636870dac0e0c0@syzkaller.appspotmail.com Signed-off-by: Sean Young sean@mess.org Signed-off-by: Mauro Carvalho Chehab mchehab+huawei@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/media/rc/iguanair.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/media/rc/iguanair.c b/drivers/media/rc/iguanair.c index a7deca1fefb73..f50362bb59f27 100644 --- a/drivers/media/rc/iguanair.c +++ b/drivers/media/rc/iguanair.c @@ -200,8 +200,10 @@ static int iguanair_send(struct iguanair *ir, unsigned size) if (rc) return rc;
- if (wait_for_completion_timeout(&ir->completion, TIMEOUT) == 0) + if (wait_for_completion_timeout(&ir->completion, TIMEOUT) == 0) { + usb_kill_urb(ir->urb_out); return -ETIMEDOUT; + }
return rc; }