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media: rc: iguanair: handle timeouts

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[ Upstream commit b98d5000c5 ]

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: e99a7cfe93 ("[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>
This commit is contained in:
Oliver Neukum
2025-03-13 12:46:54 +01:00
committed by Greg Kroah-Hartman
parent 52e6c2954a
commit ba7a42dfd5
1 changed files with 3 additions and 1 deletions
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drivers/media/rc/iguanair.c
+3 -1
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@@ -197,8 +197,10 @@ 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;
}