5.4-stable review patch. If anyone has any objections, please let me know.
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From: Mikko Rapeli mikko.rapeli@linaro.org
commit cf55a7acd1ed38afe43bba1c8a0935b51d1dc014 upstream.
Commit 4d0c8d0aef63 ("mmc: core: Use mrq.sbc in close-ended ffu") assigns prev_idata = idatas[i - 1], but doesn't check that the iterator i is greater than zero. Let's fix this by adding a check.
Fixes: 4d0c8d0aef63 ("mmc: core: Use mrq.sbc in close-ended ffu") Link: https://lore.kernel.org/all/20231129092535.3278-1-avri.altman@wdc.com/ Cc: stable@vger.kernel.org Signed-off-by: Mikko Rapeli mikko.rapeli@linaro.org Reviewed-by: Avri Altman avri.altman@wdc.com Tested-by: Francesco Dolcini francesco.dolcini@toradex.com Link: https://lore.kernel.org/r/20240313133744.2405325-2-mikko.rapeli@linaro.org Signed-off-by: Ulf Hansson ulf.hansson@linaro.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/mmc/core/block.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/mmc/core/block.c +++ b/drivers/mmc/core/block.c @@ -511,7 +511,7 @@ static int __mmc_blk_ioctl_cmd(struct mm if (idata->flags & MMC_BLK_IOC_DROP) return 0;
- if (idata->flags & MMC_BLK_IOC_SBC) + if (idata->flags & MMC_BLK_IOC_SBC && i > 0) prev_idata = idatas[i - 1];
/*