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| author | Tony Lindgren <[email protected]> | 2023-04-19 14:54:22 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2023-04-20 13:43:44 +0200 |
| commit | 63f4c34561718a349d321105adab028cbf212d57 (patch) | |
| tree | 6b53a170f76811602e726af7d5aa695dcb9abf74 /scripts/bpf_doc.py | |
| parent | 04e82793f068d2f0ffe62fcea03d007a8cdc16a7 (diff) | |
serial: core: Disable uart_start() on uart_remove_one_port()
While rebinding a uart device in a loop I noticed we may see a tx related
race on uart_remove_one_port():
uart_write from n_tty_write
n_tty_write from file_tty_write.constprop.0
file_tty_write.constprop.0 from vfs_write
vfs_write from ksys_write
ksys_write from ret_fast_syscall
Let's disallow tx on port->UPF_DEAD. This flag gets set before we start
tearing down the port in uart_remove_one_port().
Signed-off-by: Tony Lindgren <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Diffstat (limited to 'scripts/bpf_doc.py')
0 files changed, 0 insertions, 0 deletions