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ubifs: replay: Fix high stack usage, again 

An earlier commit moved out some functions to not be inlined by gcc, but
after some other rework to remove one of those, clang started inlining
the other one and ran into the same problem as gcc did before:

fs/ubifs/replay.c:1174:5: error: stack frame size of 1152 bytes in function 'ubifs_replay_journal' [-Werror,-Wframe-larger-than=]

Mark the function as noinline_for_stack to ensure it doesn't happen
again.

Fixes: f80df38512 ("ubifs: use crypto_shash_tfm_digest()")
Fixes: eb66eff663 ("ubifs: replay: Fix high stack usage")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
Arnd Bergmann 2021-01-14 22:30:11 +01:00 committed by Richard Weinberger
parent 11b8ab3836
commit 410b6de702
1 changed files with 3 additions and 1 deletions
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4
fs/ubifs/replay.c
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@ -559,7 +559,9 @@ static int is_last_bud(struct ubifs_info *c, struct ubifs_bud *bud)
}
/* authenticate_sleb_hash is split out for stack usage */
static int authenticate_sleb_hash(struct ubifs_info *c, struct shash_desc *log_hash, u8 *hash)
static int noinline_for_stack
authenticate_sleb_hash(struct ubifs_info *c,
struct shash_desc *log_hash, u8 *hash)
{
SHASH_DESC_ON_STACK(hash_desc, c->hash_tfm);