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Commit 179e037f authored by Al Viro's avatar Al Viro
Browse files

do_coredump(): make sure that descriptor table isn't shared 



Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent c3c073f8

fs/exec.c

+7 −0
Original line number Diff line number Diff line
@@ -2066,6 +2066,7 @@ void do_coredump(long signr, int exit_code, struct pt_regs *regs) 
	int retval = 0;

	int flag = 0;

	int ispipe;

	struct files_struct *displaced;

	bool need_nonrelative = false;

	static atomic_t core_dump_count = ATOMIC_INIT(0);

	struct coredump_params cprm = {
@@ -2219,6 +2220,12 @@ void do_coredump(long signr, int exit_code, struct pt_regs *regs) 
			goto close_fail;

	}



	/* get us an unshared descriptor table; almost always a no-op */

	retval = unshare_files(&displaced);

	if (retval)

		goto close_fail;

	if (displaced)

		put_files_struct(displaced);

	retval = binfmt->core_dump(&cprm);

	if (retval)

		current->signal->group_exit_code |= 0x80;