This is a note to let you know that I've just added the patch titled riscv: Fix crash during early errata patching to the 6.0-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: riscv-fix-crash-during-early-errata-patching.patch and it can be found in the queue-6.0 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit f989742c2e31eb23d68143ca32794e76611a59fe Author: Samuel Holland <samuel@xxxxxxxxxxxx> Date: Sat Nov 26 00:09:19 2022 -0600 riscv: Fix crash during early errata patching [ Upstream commit 0c49688174f5347c3f8012e84c0ffa0d2b2890c8 ] The patch function for the T-Head PBMT errata calls __pa_symbol() before relocation. This crashes when CONFIG_DEBUG_VIRTUAL is enabled, because __pa_symbol() forwards to __phys_addr_symbol(), and __phys_addr_symbol() checks against the absolute kernel start/end address. Fix this by checking against the kernel map instead of a symbol address. Fixes: a35707c3d850 ("riscv: add memory-type errata for T-Head") Reviewed-by: Heiko Stuebner <heiko@xxxxxxxxx> Tested-by: Heiko Stuebner <heiko@xxxxxxxxx> Signed-off-by: Samuel Holland <samuel@xxxxxxxxxxxx> Link: https://lore.kernel.org/r/20221126060920.65009-1-samuel@xxxxxxxxxxxx Signed-off-by: Palmer Dabbelt <palmer@xxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/arch/riscv/mm/physaddr.c b/arch/riscv/mm/physaddr.c index 19cf25a74ee2..9b18bda74154 100644 --- a/arch/riscv/mm/physaddr.c +++ b/arch/riscv/mm/physaddr.c @@ -22,7 +22,7 @@ EXPORT_SYMBOL(__virt_to_phys); phys_addr_t __phys_addr_symbol(unsigned long x) { unsigned long kernel_start = kernel_map.virt_addr; - unsigned long kernel_end = (unsigned long)_end; + unsigned long kernel_end = kernel_start + kernel_map.size; /* * Boundary checking aginst the kernel image mapping.