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SubjectRe: [crash] NULL pointer dereference at IP: [<ffffffff812e9ccb>] uart_close+0x2a/0x1e4
> BUG: unable to handle kernel NULL pointer dereference at 0000000000000240
> IP: [<ffffffff812ea215>] uart_close+0x24/0x1e5

Very odd indeed. Can you dump the value of

state (ie tty->driver_data)

and if state is non NULL

state->uart_port

in the crash case

and if state->uart_port is NULL then there is some head scratching
required


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