Commit 8e742aa7 authored Jun 10, 2020 by Jiri Slaby Committed by Thomas Gleixner Jun 15, 2020

syscalls: Fix offset type of ksys_ftruncate()



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: 121b32a5 (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

parent 2c18bd52

include/linux/syscalls.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -1360,7 +1360,7 @@ 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);
		}

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