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| author |   Daniel Starke <daniel.starke@siemens.com> | 2022-07-01 08:16:52 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-07-01 10:07:40 +0200 |
| commit | 32dd59f96924f45e33bc79854f7a00679c0fa28e (patch) | |
| tree | c45bdc462f2dfa290fb83f8a675e05b34463229e /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | tty: n_gsm: fix packet re-transmission without open control channel (diff) | |
| download | linux-dev-32dd59f96924f45e33bc79854f7a00679c0fa28e.tar.xz linux-dev-32dd59f96924f45e33bc79854f7a00679c0fa28e.zip | |
tty: n_gsm: fix race condition in gsmld_write()
The function may be used by the user directly and also by the n_gsm
internal functions. They can lead into a race condition which results in
interleaved frames if both are writing at the same time. The receiving side
is not able to decode those interleaved frames correctly.
Add a lock around the low side tty write to avoid race conditions and frame
interleaving between user originated writes and n_gsm writes.
Fixes: e1eaea46bb40 ("tty: n_gsm line discipline")
Signed-off-by: Daniel Starke <daniel.starke@siemens.com>
Link: https://lore.kernel.org/r/20220701061652.39604-9-daniel.starke@siemens.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions