diff options
| author | Oliver Neukum <[email protected]> | 2024-09-12 16:19:06 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2024-09-13 07:53:52 +0200 |
| commit | b41c1fa155ba56d125885b0191aabaf3c508d0a3 (patch) | |
| tree | 980b4d8640845f7864bd5089d264fb61c709369a /tools/perf/util/scripting-engines/trace-event-python.c | |
| parent | 9ae0f262fc3f36c1f0b131c7017fbe75245a39df (diff) | |
USB: class: CDC-ACM: fix race between get_serial and set_serial
TIOCGSERIAL is an ioctl. Thus it must be atomic. It returns
two values. Racing with set_serial it can return an inconsistent
result. The mutex must be taken.
In terms of logic the bug is as old as the driver. In terms of
code it goes back to the conversion to the get_serial and
set_serial methods.
Signed-off-by: Oliver Neukum <[email protected]>
Cc: stable <[email protected]>
Fixes: 99f75a1fcd865 ("cdc-acm: switch to ->[sg]et_serial()")
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Diffstat (limited to 'tools/perf/util/scripting-engines/trace-event-python.c')
0 files changed, 0 insertions, 0 deletions