From: Leon Romanovsky <[email protected]> Hi Linus,
Both Colin in Ubuntu [1] and I in FC 32 are having same kernel crashes while GCOV is enabled. The reason to it that n_fuction variable that should be provided by GCC is not initialized (or wrongly set). This patch is based on the RFC [2] which I sent to gather feedback, but didn't get any response, so sending it to you in proper -rc format. Bottom line, GCOV is broken on GCC 10.2. Thanks [1] https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1891288 [2] https://lore.kernel.org/lkml/[email protected] Leon Romanovsky (4): gcov: Open-code kmemdup() to work correctly with kernel and user space pointers gcov: Use proper duplication routine for const pointer gcov: Protect from uninitialized number of functions provided by GCC 10.2 gcov: Don't print out-of-memory print for all failed files kernel/gcov/fs.c | 5 +++-- kernel/gcov/gcc_4_7.c | 17 +++++++++-------- 2 files changed, 12 insertions(+), 10 deletions(-) -- 2.26.2
