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| author | Zheyu Ma <zheyuma97@gmail.com> | 2022-07-16 21:04:44 +0800 |
|---|---|---|
| committer | Kalle Valo <kvalo@kernel.org> | 2022-07-27 15:52:55 +0300 |
| commit | 13876f2a087ad352bf640a7a0a4a4229ea6e9e4f (patch) | |
| tree | b4af8a3900fe5e1ed666f1229a9024fbcdfd3e92 /drivers/net/phy/dp83869.c | |
| parent | 69ddcea564437ce4b0d5143f37a9154fcef8d3d2 (diff) | |
wifi: rtl8xxxu: Fix the error handling of the probe function
When the driver fails at ieee80211_alloc_hw() at the probe time, the
driver will free the 'hw' which is not allocated, causing a bug.
The following log can reveal it:
[ 15.981294] BUG: KASAN: user-memory-access in mutex_is_locked+0xe/0x40
[ 15.981558] Read of size 8 at addr 0000000000001ab0 by task modprobe/373
[ 15.982583] Call Trace:
[ 15.984282] ieee80211_free_hw+0x22/0x390
[ 15.984446] rtl8xxxu_probe+0x3a1/0xab30 [rtl8xxxu]
Fix the bug by changing the order of the error handling.
Signed-off-by: Zheyu Ma <zheyuma97@gmail.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220716130444.2950690-1-zheyuma97@gmail.com
Diffstat (limited to 'drivers/net/phy/dp83869.c')
0 files changed, 0 insertions, 0 deletions