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linux_dsm_epyc7002/include
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Arnd Bergmann 055d88242a compat_ioctl: pppoe: fix PPPOEIOCSFWD handling 
Support for handling the PPPOEIOCSFWD ioctl in compat mode was added in
linux-2.5.69 along with hundreds of other commands, but was always broken
sincen only the structure is compatible, but the command number is not,
due to the size being sizeof(size_t), or at first sizeof(sizeof((struct
sockaddr_pppox)), which is different on 64-bit architectures.

Guillaume Nault adds:

  And the implementation was broken until 2016 (see 29e73269aa ("pppoe:
  fix reference counting in PPPoE proxy")), and nobody ever noticed. I
  should probably have removed this ioctl entirely instead of fixing it.
  Clearly, it has never been used.

Fix it by adding a compat_ioctl handler for all pppoe variants that
translates the command number and then calls the regular ioctl function.

All other ioctl commands handled by pppoe are compatible between 32-bit
and 64-bit, and require compat_ptr() conversion.

This should apply to all stable kernels.

Acked-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-30 14:42:13 -07:00
..
acpi
asm-generic Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux 2019-07-17 13:13:41 -07:00
clocksource
crypto
drm drm fixes for -rc1: 2019-07-19 12:29:43 -07:00
dt-bindings ARM: Device-tree updates 2019-07-19 17:19:24 -07:00
keys
kvm
linux compat_ioctl: pppoe: fix PPPOEIOCSFWD handling 2019-07-30 14:42:13 -07:00
math-emu
media
misc powerpc updates for 5.3 2019-07-13 16:08:36 -07:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf 2019-07-25 17:35:03 -07:00
pcmcia
ras
rdma
scsi SCSI fixes on 20190720 2019-07-20 10:04:58 -07:00
soc ARM: SoC-related driver updates 2019-07-19 17:13:56 -07:00
sound ALSA: hda - Don't resume forcibly i915 HDMI/DP codec 2019-07-16 22:46:13 +02:00
target
trace NFS client updates for Linux 5.3 2019-07-18 14:32:33 -07:00
uapi media updates for v5.3-rc1 2019-07-22 09:01:47 -07:00
vdso
video drm main pull request for v5.3-rc1 (sans mm changes) 2019-07-15 19:04:27 -07:00
xen xen: remove tmem driver 2019-07-17 08:09:58 +02:00
Kbuild kbuild: add net/netfilter/nf_tables_offload.h to header-test blacklist. 2019-07-21 11:43:43 -07:00