remoteproc: qcom_q6v5_mss: Validate MBA firmware size before load
commit e013f455 upstream. The following mem abort is observed when the mba firmware size exceeds the allocated mba region. MBA firmware size is restricted to a maximum size of 1M and remaining memory region is used by modem debug policy firmware when available. Hence verify whether the MBA firmware size lies within the allocated memory region and is not greater than 1M before loading. Err Logs: Unable to handle kernel paging request at virtual address Mem abort info: ... Call trace: __memcpy+0x110/0x180 rproc_start+0x40/0x218 rproc_boot+0x5b4/0x608 state_store+0x54/0xf8 dev_attr_store+0x44/0x60 sysfs_kf_write+0x58/0x80 kernfs_fop_write+0x140/0x230 vfs_write+0xc4/0x208 ksys_write+0x74/0xf8 __arm64_sys_write+0x24/0x30 ... Reviewed-by:Bjorn Andersson <bjorn.andersson@linaro.org> Fixes: 051fb70f ("remoteproc: qcom: Driver for the self-authenticating Hexagon v5") Cc: stable@vger.kernel.org Signed-off-by:
Sibi Sankar <sibis@codeaurora.org> Link: https://lore.kernel.org/r/20200722201047.12975-2-sibis@codeaurora.org Signed-off-by:
Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by:
Paul Gortmaker <paul.gortmaker@windriver.com>
parent
564fe20e
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