Chunyan Zhang 27379fcc15 riscv: stacktrace: Disable KASAN checks for non-current tasks ...

[ Upstream commit 060ea84a48 ]

Unwinding the stack of a task other than current, KASAN would report
"BUG: KASAN: out-of-bounds in walk_stackframe+0x41c/0x460"

There is a same issue on x86 and has been resolved by the commit
84936118bd ("x86/unwind: Disable KASAN checks for non-current tasks")
The solution could be applied to RISC-V too.

This patch also can solve the issue:
https://seclists.org/oss-sec/2025/q4/23

Fixes: 5d8544e2d0 ("RISC-V: Generic library routines and assembly")
Co-developed-by: Jiakai Xu <xujiakai2025@iscas.ac.cn>
Signed-off-by: Jiakai Xu <xujiakai2025@iscas.ac.cn>
Signed-off-by: Chunyan Zhang <zhangchunyan@iscas.ac.cn>
Link: https://lore.kernel.org/r/20251022072608.743484-1-zhangchunyan@iscas.ac.cn
[pjw@kernel.org: clean up checkpatch issues]
Signed-off-by: Paul Walmsley <pjw@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2025-11-13 15:34:36 -05:00

5.4 KiB

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