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habanalabs: prevent user buff overflow

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This commit fixes a potential debugfs issue that may occur when
reading the clock gating mask into the user buffer since the
user buffer size was not taken into consideration.

Signed-off-by: Moti Haimovski <mhaimovski@habana.ai>
Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This commit is contained in:
Moti Haimovski 2020-08-19 17:40:33 +03:00 committed by Oded Gabbay
parent f75aef392f
commit 6396feabf7
1 changed files with 1 additions and 1 deletions
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2
drivers/misc/habanalabs/common/debugfs.c
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@ -982,7 +982,7 @@ static ssize_t hl_clk_gate_read(struct file *f, char __user *buf,
return 0;
sprintf(tmp_buf, "0x%llx\n", hdev->clock_gating_mask);
rc = simple_read_from_buffer(buf, strlen(tmp_buf) + 1, ppos, tmp_buf,
rc = simple_read_from_buffer(buf, count, ppos, tmp_buf,
strlen(tmp_buf) + 1);
return rc;