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| author |   Stefan Wahren <stefan.wahren@i2se.com> | 2017-02-16 21:20:45 +0000 |
|---|---|---|
| committer |   Wolfram Sang <wsa@the-dreams.de> | 2017-02-20 19:19:54 +0100 |
| commit | ababb08938df7ac245d30a58b95b94ecf8dc04fc (patch) | |
| tree | d744a8bfbef3892fbd494beb7c879f5d2110cd19 /tools/perf/util/scripting-engines/trace-event-python.c | |
| parent | i2c: Add Tegra BPMP I2C proxy driver (diff) | |
| download | wireguard-linux-ababb08938df7ac245d30a58b95b94ecf8dc04fc.tar.xz wireguard-linux-ababb08938df7ac245d30a58b95b94ecf8dc04fc.zip | |
i2c: bcm2835: Avoid possible NULL ptr dereference
Since commit e2474541032d ("bcm2835: Fix hang for writing messages
larger than 16 bytes") the interrupt handler is prone to a possible
NULL pointer dereference. This could happen if an interrupt fires
before curr_msg is set by bcm2835_i2c_xfer_msg() and randomly occurs
on the RPi 3. Even this is an unexpected behavior the driver must
handle that with an error instead of a crash.
Reported-by: Peter Robinson <pbrobinson@gmail.com>
Fixes: e2474541032d ("bcm2835: Fix hang for writing messages larger than 16 bytes")
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Acked-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'tools/perf/util/scripting-engines/trace-event-python.c')
0 files changed, 0 insertions, 0 deletions