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snd_seq_device_new() allocates struct snd_seq_device together with a caller-specific argument area. SNDRV_SEQ_DEVICE_ARGPTR() reaches that area by adding sizeof(struct snd_seq_device) to the object pointer. Make the trailing storage explicit with a flexible array and allocate it with kzalloc_flex(). This makes the object layout self-describing and avoids open-coded size arithmetic in the allocation and accessor. Reject negative argsize values before calculating the allocation size. Current in-tree callers pass either zero or sizeof() values, but the function takes an int size argument and should not let a negative value flow into unsigned allocation arithmetic. Signed-off-by: Cássio Gabriel <cassiogabrielcontato@gmail.com> Link: https://patch.msgid.link/20260531-alsa-seq-flex-args-v2-1-6e068d4ed9b0@gmail.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
337 lines
7.7 KiB
337 lines
7.7 KiB