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| author | Jakub Kicinski <kuba@kernel.org> | 2021-12-30 23:12:12 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2021-12-30 23:12:12 +0300 |
| commit | aec53e60e0e665b359328b946654bc3ef77aed57 (patch) | |
| tree | 55c6cc087d96f5ca9ec4bdd81134fd2471c02700 /kernel/signal.c | |
| parent | 49dc9013e34b205bae9d7a5f365a3da33c508c9d (diff) | |
| parent | 74c78b4291b4466b44a57b3b7c3b98ad02628686 (diff) | |
| download | linux-aec53e60e0e665b359328b946654bc3ef77aed57.tar.xz | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
commit 077cdda764c7 ("net/mlx5e: TC, Fix memory leak with rules with internal port")
commit 31108d142f36 ("net/mlx5: Fix some error handling paths in 'mlx5e_tc_add_fdb_flow()'")
commit 4390c6edc0fb ("net/mlx5: Fix some error handling paths in 'mlx5e_tc_add_fdb_flow()'")
https://lore.kernel.org/all/20211229065352.30178-1-saeed@kernel.org/
net/smc/smc_wr.c
commit 49dc9013e34b ("net/smc: Use the bitmap API when applicable")
commit 349d43127dac ("net/smc: fix kernel panic caused by race of smc_sock")
bitmap_zero()/memset() is removed by the fix
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'kernel/signal.c')
| -rw-r--r-- | kernel/signal.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/kernel/signal.c b/kernel/signal.c index a629b11bf3e0..dfcee3888b00 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -4185,6 +4185,15 @@ do_sigaltstack (const stack_t *ss, stack_t *oss, unsigned long sp, ss_mode != 0)) return -EINVAL; + /* + * Return before taking any locks if no actual + * sigaltstack changes were requested. + */ + if (t->sas_ss_sp == (unsigned long)ss_sp && + t->sas_ss_size == ss_size && + t->sas_ss_flags == ss_flags) + return 0; + sigaltstack_lock(); if (ss_mode == SS_DISABLE) { ss_size = 0; |