Messages in this thread Patch in this message | | | From | void0red <> | Subject | [PATCH v2] wifi: mt76: add a check of vzalloc in mt7615_coredump_work | Date | Mon, 27 Feb 2023 21:52:41 +0800 |
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From: Kang Chen <void0red@gmail.com>
vzalloc may fails, dump might be null and will cause illegal address access later.
Fixes: d2bf7959d9c0 ("mt76: mt7663: introduce coredump support") Signed-off-by: Kang Chen <void0red@gmail.com> --- v2 -> v1: add Fixes tag
drivers/net/wireless/mediatek/mt76/mt7615/mac.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c index a95602473..73d84c301 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c @@ -2367,6 +2367,9 @@ void mt7615_coredump_work(struct work_struct *work) } dump = vzalloc(MT76_CONNAC_COREDUMP_SZ); + if (!dump) + return; + data = dump; while (true) { -- 2.34.1
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