mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/
synced 2026-11-08 18:57:22 +00:00
1a5f9334a4
dso__get_filename() sets errno to a negative custom DSO_LOAD_ERRNO
value when kernel module decompression fails:
errno = *dso__load_errno(dso); /* e.g. -9996 */
The caller __open_dso() then computes fd = -errno, producing a large
positive value (9996) that looks like a valid file descriptor. This
can cause close_data_fd() to close an unrelated fd used by another
subsystem.
Set errno to EIO instead. The detailed error code is already stored
in dso__load_errno(dso) for diagnostic messages.
Fixes: 1d6b3c9ba7 ("perf tools: Decompress kernel module when reading DSO data")
Reported-by: sashiko-bot <sashiko-bot@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Assisted-by: Claude:claude-opus-4.6
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2045 lines
50 KiB
2045 lines
50 KiB