diff options
| author | Hugh Dickins <hughd@google.com> | 2025-09-27 21:28:06 -0700 |
|---|---|---|
| committer | Nathan Chancellor <nathan@kernel.org> | 2025-09-28 07:54:07 -0400 |
| commit | 2ea77fca84f07849aa995271271340d262d0c2e9 (patch) | |
| tree | 34b3605fc1ea9a0dff05917a5f2a8c0b6c2e6bd6 /scripts/mod/file2alias.c | |
| parent | 37fac070eb1e59db81a9b3b18340083878a0a2c9 (diff) | |
modpost: Initialize builtin_modname to stop SIGSEGVs
Segmentation fault ./scripts/mod/modpost -o vmlinux.symvers vmlinux.o
stops the kernel build. It comes when write_vmlinux_export_c_file()
tries to buf_printf alias->builtin_modname. malloc'ed memory is not
necessarily zeroed. NULL new->builtin_modname before adding to aliases.
Fixes: 5ab23c7923a1 ("modpost: Create modalias for builtin modules")
Signed-off-by: Hugh Dickins <hughd@google.com>
Reviewed-by: Nicolas Schier <nsc@kernel.org>
Link: https://patch.msgid.link/4590a243-0a7e-b7e6-e2d3-cd1b41a12237@google.com
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Diffstat (limited to 'scripts/mod/file2alias.c')
| -rw-r--r-- | scripts/mod/file2alias.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c index 7da9735e7ab3..b3333560b95e 100644 --- a/scripts/mod/file2alias.c +++ b/scripts/mod/file2alias.c @@ -94,6 +94,7 @@ module_alias_printf(struct module *mod, bool append_wildcard, } } + new->builtin_modname = NULL; list_add_tail(&new->node, &mod->aliases); } |