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(parent: f17b5f0) | patch
tty: serial: 8250_mtk: Fix potential NULL pointer dereference
authorGustavo A. R. Silva <gustavo@embeddedor.com>
Tue, 22 Jan 2019 19:57:19 +0000 (13:57 -0600)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 30 Jan 2019 08:35:46 +0000 (09:35 +0100)
commit1575c083a78cc1137ad8bfa042d02eeb9dc86ef4
tree7b570f2b2e25b2b718f9c354a5a06b3e4dc7488dtree | snapshot
parentf17b5f06cb92ef2250513a1e154c47b78df07d40commit | diff
tty: serial: 8250_mtk: Fix potential NULL pointer dereference

There is a potential NULL pointer dereference in case devm_kzalloc()
fails and returns NULL.

Fix this by adding a NULL check on data->dma

This bug was detected with the help of Coccinelle.

Fixes: 85b5c1dd0456 ("serial: 8250-mtk: add uart DMA support")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/tty/serial/8250/8250_mtk.c diff | blob | history