diff options
Diffstat (limited to 'package/kernel/mac80211/patches/ath11k/0053-wifi-ath11k-fix-writing-to-unintended-memory-region.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/ath11k/0053-wifi-ath11k-fix-writing-to-unintended-memory-region.patch | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/ath11k/0053-wifi-ath11k-fix-writing-to-unintended-memory-region.patch b/package/kernel/mac80211/patches/ath11k/0053-wifi-ath11k-fix-writing-to-unintended-memory-region.patch new file mode 100644 index 0000000000..7b8a7d4543 --- /dev/null +++ b/package/kernel/mac80211/patches/ath11k/0053-wifi-ath11k-fix-writing-to-unintended-memory-region.patch @@ -0,0 +1,43 @@ +From 756a7f90878f0866fd2fe167ef37e90b47326b96 Mon Sep 17 00:00:00 2001 +From: P Praneesh <quic_ppranees@quicinc.com> +Date: Fri, 24 Mar 2023 16:57:01 +0200 +Subject: [PATCH] wifi: ath11k: fix writing to unintended memory region + +While initializing spectral, the magic value is getting written to the +invalid memory address leading to random boot-up crash. This occurs +due to the incorrect index increment in ath11k_dbring_fill_magic_value +function. Fix it by replacing the existing logic with memset32 to ensure +there is no invalid memory access. + +Tested-on: QCN9074 hw1.0 PCI WLAN.HK.2.4.0.1-01838-QCAHKSWPL_SILICONZ-1 + +Fixes: d3d358efc553 ("ath11k: add spectral/CFR buffer validation support") +Signed-off-by: P Praneesh <quic_ppranees@quicinc.com> +Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com> +Link: https://lore.kernel.org/r/20230321052900.16895-1-quic_ppranees@quicinc.com +--- + drivers/net/wireless/ath/ath11k/dbring.c | 12 ++++++------ + 1 file changed, 6 insertions(+), 6 deletions(-) + +--- a/drivers/net/wireless/ath/ath11k/dbring.c ++++ b/drivers/net/wireless/ath/ath11k/dbring.c +@@ -26,13 +26,13 @@ int ath11k_dbring_validate_buffer(struct + static void ath11k_dbring_fill_magic_value(struct ath11k *ar, + void *buffer, u32 size) + { +- u32 *temp; +- int idx; ++ /* memset32 function fills buffer payload with the ATH11K_DB_MAGIC_VALUE ++ * and the variable size is expected to be the number of u32 values ++ * to be stored, not the number of bytes. ++ */ ++ size = size / sizeof(u32); + +- size = size >> 2; +- +- for (idx = 0, temp = buffer; idx < size; idx++, temp++) +- *temp++ = ATH11K_DB_MAGIC_VALUE; ++ memset32(buffer, ATH11K_DB_MAGIC_VALUE, size); + } + + static int ath11k_dbring_bufs_replenish(struct ath11k *ar, |