Bluetooth: hci_sync: fix set_local_name race condition

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[ Upstream commit 6bbd0d3f0c ]

Function set_name_sync() uses hdev->dev_name field to send
HCI_OP_WRITE_LOCAL_NAME command, but copying from data to hdev->dev_name
is called after mgmt cmd was queued, so it is possible that function
set_name_sync() will read old name value.

This change adds name as a parameter for function hci_update_name_sync()
to avoid race condition.

Fixes: 6f6ff38a1e ("Bluetooth: hci_sync: Convert MGMT_OP_SET_LOCAL_NAME")
Signed-off-by: Pavel Shpakovskiy <pashpakovskii@salutedevices.com>
Reviewed-by: Paul Menzel <pmenzel@molgen.mpg.de>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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This commit is contained in:

Pavel Shpakovskiy 2025-08-22 12:20:55 +03:00 • committed by Greg Kroah-Hartman

parent 50de864766

commit af181eb716

3 changed files with 8 additions and 5 deletions

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2

include/net/bluetooth/hci_sync.h

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6

net/bluetooth/hci_sync.c

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5

net/bluetooth/mgmt.c

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