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| author | Alexandre Ghiti <alexghiti@rivosinc.com> | 2025-07-11 10:38:38 +0300 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@dabbelt.com> | 2025-07-16 18:21:47 +0300 |
| commit | e3f16d63d54e6fcf2b18812f2dd0a8d2782b5f3a (patch) | |
| tree | 122aaa9a4de87e200373e7cb227cbbbf0c4a5805 /scripts/gdb/linux/xarray.py | |
| parent | 16d743606dba05f9ad87837791fcd5c083544c43 (diff) | |
| download | linux-e3f16d63d54e6fcf2b18812f2dd0a8d2782b5f3a.tar.xz | |
riscv: ftrace: Properly acquire text_mutex to fix a race condition
As reported by lockdep, some patching was done without acquiring
text_mutex, so there could be a race when mapping the page to patch
since we use the same fixmap entry.
Reported-by: Han Gao <rabenda.cn@gmail.com>
Reported-by: Vivian Wang <wangruikang@iscas.ac.cn>
Reported-by: Yao Zi <ziyao@disroot.org>
Closes: https://lore.kernel.org/linux-riscv/aGODMpq7TGINddzM@pie.lan/
Tested-by: Yao Zi <ziyao@disroot.org>
Tested-by: Han Gao <rabenda.cn@gmail.com>
Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20250711-alex-fixes-v2-1-d85a5438da6c@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>
Diffstat (limited to 'scripts/gdb/linux/xarray.py')
0 files changed, 0 insertions, 0 deletions