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authorJakub Kicinski <kuba@kernel.org>2025-07-17 10:56:56 -0700
committerJakub Kicinski <kuba@kernel.org>2025-07-24 11:10:46 -0700
commit8b5a19b4ff6a2096225d88cf24cfeef03edc1bed (patch)
tree652b9d5bcfacfcde6e14381a7f6fac8430f0ac13 /arch/s390/net/bpf_jit_comp.c
parentMerge tag 'ipsec-next-2025-07-23' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next (diff)
parentMerge tag 'net-6.16-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net (diff)
downloadwireguard-linux-8b5a19b4ff6a2096225d88cf24cfeef03edc1bed.tar.xz
wireguard-linux-8b5a19b4ff6a2096225d88cf24cfeef03edc1bed.zip
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.16-rc8). Conflicts: drivers/net/ethernet/microsoft/mana/gdma_main.c 9669ddda18fb ("net: mana: Fix warnings for missing export.h header inclusion") 755391121038 ("net: mana: Allocate MSI-X vectors dynamically") https://lore.kernel.org/20250711130752.23023d98@canb.auug.org.au Adjacent changes: drivers/net/ethernet/ti/icssg/icssg_prueth.h 6e86fb73de0f ("net: ti: icssg-prueth: Fix buffer allocation for ICSSG") ffe8a4909176 ("net: ti: icssg-prueth: Read firmware-names from device tree") Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'arch/s390/net/bpf_jit_comp.c')
-rw-r--r--arch/s390/net/bpf_jit_comp.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/arch/s390/net/bpf_jit_comp.c b/arch/s390/net/bpf_jit_comp.c
index c7f8313ba449..0c9a35782c83 100644
--- a/arch/s390/net/bpf_jit_comp.c
+++ b/arch/s390/net/bpf_jit_comp.c
@@ -566,7 +566,15 @@ static void bpf_jit_plt(struct bpf_plt *plt, void *ret, void *target)
{
memcpy(plt, &bpf_plt, sizeof(*plt));
plt->ret = ret;
- plt->target = target;
+ /*
+ * (target == NULL) implies that the branch to this PLT entry was
+ * patched and became a no-op. However, some CPU could have jumped
+ * to this PLT entry before patching and may be still executing it.
+ *
+ * Since the intention in this case is to make the PLT entry a no-op,
+ * make the target point to the return label instead of NULL.
+ */
+ plt->target = target ?: ret;
}
/*