lkml.org 
[lkml]   [2020]   [Jun]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH 5.7 208/265] syscalls: Fix offset type of ksys_ftruncate()
    Date
    From: Jiri Slaby <jslaby@suse.cz>

    commit 8e742aa79780b13cd300a42198c1a4cea9c89905 upstream.

    After the commit below, truncate() on x86 32bit uses ksys_ftruncate(). But
    ksys_ftruncate() truncates the offset to unsigned long.

    Switch the type of offset to loff_t which is what do_sys_ftruncate()
    expects.

    Fixes: 121b32a58a3a (x86/entry/32: Use IA32-specific wrappers for syscalls taking 64-bit arguments)
    Signed-off-by: Jiri Slaby <jslaby@suse.cz>
    Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
    Reviewed-by: Brian Gerst <brgerst@gmail.com>
    Cc: stable@vger.kernel.org
    Link: https://lkml.kernel.org/r/20200610114851.28549-1-jslaby@suse.cz
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    include/linux/syscalls.h | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
    index 1815065d52f37..1b0c7813197b0 100644
    --- a/include/linux/syscalls.h
    +++ b/include/linux/syscalls.h
    @@ -1358,7 +1358,7 @@ static inline long ksys_lchown(const char __user *filename, uid_t user,

    extern long do_sys_ftruncate(unsigned int fd, loff_t length, int small);

    -static inline long ksys_ftruncate(unsigned int fd, unsigned long length)
    +static inline long ksys_ftruncate(unsigned int fd, loff_t length)
    {
    return do_sys_ftruncate(fd, length, 1);
    }
    --
    2.25.1
    \
     
     \ /
      Last update: 2020-06-30 00:00    [W:5.692 / U:0.124 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site