Tze-nan Wu f8d6acb19f bpf, net: Fix a potential race in do_sock_getsockopt() ... [ Upstream commit 33f339a1ba ] There's a potential race when `cgroup_bpf_enabled(CGROUP_GETSOCKOPT)` is false during the execution of `BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN`, but becomes true when `BPF_CGROUP_RUN_PROG_GETSOCKOPT` is called. This inconsistency can lead to `BPF_CGROUP_RUN_PROG_GETSOCKOPT` receiving an "-EFAULT" from `__cgroup_bpf_run_filter_getsockopt(max_optlen=0)`. Scenario shown as below: `process A` `process B` ----------- ------------ BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN enable CGROUP_GETSOCKOPT BPF_CGROUP_RUN_PROG_GETSOCKOPT (-EFAULT) To resolve this, remove the `BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN` macro and directly uses `copy_from_sockptr` to ensure that `max_optlen` is always set before `BPF_CGROUP_RUN_PROG_GETSOCKOPT` is invoked. Fixes: 0d01da6afc ("bpf: implement getsockopt and setsockopt hooks") Co-developed-by: Yanghui Li <yanghui.li@mediatek.com> Signed-off-by: Yanghui Li <yanghui.li@mediatek.com> Co-developed-by: Cheng-Jui Wang <cheng-jui.wang@mediatek.com> Signed-off-by: Cheng-Jui Wang <cheng-jui.wang@mediatek.com> Signed-off-by: Tze-nan Wu <Tze-nan.Wu@mediatek.com> Acked-by: Stanislav Fomichev <sdf@fomichev.me> Acked-by: Alexei Starovoitov <ast@kernel.org> Link: https://patch.msgid.link/20240830082518.23243-1-Tze-nan.Wu@mediatek.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-09-12 11:11:34 +02:00
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acpi	ACPICA: Add a depth argument to acpi_execute_reg_methods()	2024-08-29 17:33:13 +02:00
asm-generic	vmlinux.lds.h: catch .bss..L* sections into BSS")	2024-08-03 08:53:35 +02:00
clocksource	pwm: xilinx: Fix u32 overflow issue in 32-bit width PWM mode.	2024-09-08 07:54:44 +02:00
crypto
drm	drm/mipi-dsi: Fix theoretical int overflow in mipi_dsi_generic_write_seq()	2024-08-03 08:53:45 +02:00
dt-bindings
keys
kunit
kvm
linux	bpf, net: Fix a potential race in do_sock_getsockopt()	2024-09-12 11:11:34 +02:00
math-emu
media
memory
misc
net	net/socket: Break down __sys_getsockopt	2024-09-12 11:11:34 +02:00
pcmcia
ras
rdma
rv
scsi	scsi: core: Fix the return value of scsi_logical_block_count()	2024-08-29 17:33:52 +02:00
soc	net: mscc: ocelot: serialize access to the injection/extraction groups	2024-08-29 17:33:45 +02:00
sound	ALSA: ump: Transmit RPN/NRPN message at each MSB/LSB data reception	2024-09-08 07:54:30 +02:00
target
trace	platform/x86/intel/ifs: Gen2 Scan test support	2024-08-14 13:58:37 +02:00
uapi	Revert "misc: fastrpc: Restrict untrusted app to attach to privileged PD"	2024-08-29 17:33:10 +02:00
ufs	scsi: ufs: core: Check LSDBS cap when !mcq	2024-09-08 07:54:29 +02:00
vdso
video
xen