fanotify: Fix sys_fanotify_mark() on native x86-32

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commit 2ca408d9c7 upstream.

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  121b32a58a ("x86/entry/32: Use IA32-specific wrappers for syscalls taking 64-bit arguments")

converted native x86-32 which take 64-bit arguments to use the
compat handlers to allow conversion to passing args via pt_regs.
sys_fanotify_mark() was however missed, as it has a general compat
handler. Add a config option that will use the syscall wrapper that
takes the split args for native 32-bit.

 [ bp: Fix typo in Kconfig help text. ]

Fixes: 121b32a58a ("x86/entry/32: Use IA32-specific wrappers for syscalls taking 64-bit arguments")
Reported-by: Paweł Jasiak <pawel@jasiak.xyz>
Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Jan Kara <jack@suse.cz>
Acked-by: Andy Lutomirski <luto@kernel.org>
Link: https://lkml.kernel.org/r/20201130223059.101286-1-brgerst@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Brian Gerst 2020-11-30 17:30:59 -05:00 • committed by Greg Kroah-Hartman

parent 797c128d3c

commit 797335659e

4 changed files with 38 additions and 10 deletions

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6

arch/Kconfig

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1

arch/x86/Kconfig

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17

fs/notify/fanotify/fanotify_user.c

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24

include/linux/syscalls.h

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