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| author | Kees Cook <keescook@chromium.org> | 2023-01-27 23:39:21 +0100 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2023-02-09 00:26:58 +0100 |
| commit | 48df133578c70185a95a49390d42df1996ddba2a (patch) | |
| tree | a7956907fe0141e4ed3ec9d552c520259d6d72ae /fs/coda | |
| parent | Merge branch 'for-linus/hardening' into for-next/hardening (diff) | |
| download | linux-48df133578c70185a95a49390d42df1996ddba2a.tar.xz linux-48df133578c70185a95a49390d42df1996ddba2a.zip | |
coda: Avoid partial allocation of sig_inputArgs
GCC does not like having a partially allocated object, since it cannot
reason about it for bounds checking when it is passed to other code.
Instead, fully allocate sig_inputArgs. (Alternatively, sig_inputArgs
should be defined as a struct coda_in_hdr, if it is actually not using
any other part of the union.) Seen under GCC 13:
../fs/coda/upcall.c: In function 'coda_upcall':
../fs/coda/upcall.c:801:22: warning: array subscript 'union inputArgs[0]' is partly outside array bounds of 'unsigned char[20]' [-Warray-bounds=]
801 | sig_inputArgs->ih.opcode = CODA_SIGNAL;
| ^~
Cc: Jan Harkes <jaharkes@cs.cmu.edu>
Cc: coda@cs.cmu.edu
Cc: codalist@coda.cs.cmu.edu
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20230127223921.never.882-kees@kernel.org
Diffstat (limited to 'fs/coda')
| -rw-r--r-- | fs/coda/upcall.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/coda/upcall.c b/fs/coda/upcall.c index 59f6cfd06f96..cd6a3721f6f6 100644 --- a/fs/coda/upcall.c +++ b/fs/coda/upcall.c @@ -791,7 +791,7 @@ static int coda_upcall(struct venus_comm *vcp, sig_req = kmalloc(sizeof(struct upc_req), GFP_KERNEL); if (!sig_req) goto exit; - sig_inputArgs = kvzalloc(sizeof(struct coda_in_hdr), GFP_KERNEL); + sig_inputArgs = kvzalloc(sizeof(*sig_inputArgs), GFP_KERNEL); if (!sig_inputArgs) { kfree(sig_req); goto exit; |