linux/include
Daniel Borkmann 6fad274f06 bpf: Add MEM_WRITE attribute
Add a MEM_WRITE attribute for BPF helper functions which can be used in
bpf_func_proto to annotate an argument type in order to let the verifier
know that the helper writes into the memory passed as an argument. In
the past MEM_UNINIT has been (ab)used for this function, but the latter
merely tells the verifier that the passed memory can be uninitialized.

There have been bugs with overloading the latter but aside from that
there are also cases where the passed memory is read + written which
currently cannot be expressed, see also 4b3786a6c5 ("bpf: Zero former
ARG_PTR_TO_{LONG,INT} args in case of error").

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20241021152809.33343-1-daniel@iogearbox.net
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2024-10-22 15:42:56 -07:00
..
acpi Power management updates for 6.12-rc1 2024-09-16 07:47:50 +02:00
asm-generic move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
clocksource
crypto move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
cxl
drm Short summary of fixes pull: 2024-10-01 08:15:55 +10:00
dt-bindings soc: convert ep93xx to devicetree 2024-09-26 12:00:25 -07:00
keys KEYS: Remove unused declarations 2024-09-20 18:28:26 +03:00
kunit The core clk framework is left largely untouched this time around except for 2024-09-23 15:01:48 -07:00
kvm
linux bpf: Add MEM_WRITE attribute 2024-10-22 15:42:56 -07:00
math-emu
media
memory
misc
net BPF fixes: 2024-10-18 16:27:14 -07:00
pcmcia
ras
rdma move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
rv
scsi move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
soc soc: driver updates for 6.12 2024-09-17 10:48:09 +02:00
sound ALSA: hda: fix trigger_tstamp_latched 2024-10-02 12:50:24 +02:00
target move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
trace dma-mapping fix for Linux 6.12 2024-10-20 10:56:42 -07:00
uapi BPF fixes: 2024-10-18 16:27:14 -07:00
ufs Many singleton patches - please see the various changelogs for details. 2024-09-21 08:20:50 -07:00
vdso random: vDSO: add a __vdso_getrandom prototype for all architectures 2024-09-13 17:28:35 +02:00
video
xen xen: Remove dependency between pciback and privcmd 2024-10-18 11:59:04 +02:00