tree: git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: bbdef57970d5e1887de755474ff1562baa17ef11
commit: ed9af7d027e2f211e782631dcd6740323a6f26f9 [6416/6487] syscalls,x86: implement execveat() system call
reproduce:
# apt-get install sparse
git checkout ed9af7d027e2f211e782631dcd6740323a6f26f9
make ARCH=x86_64 allmodconfig
make C=1 CF=-D__CHECK_ENDIAN__
sparse warnings: (new ones prefixed by >>)
fs/exec.c:407:39: sparse: incorrect type in return expression (different address spaces)
fs/exec.c:407:39: expected char const [noderef] <asn:1>*
fs/exec.c:407:39: got void *
fs/exec.c:414:31: sparse: incorrect type in return expression (different address spaces)
fs/exec.c:414:31: expected char const [noderef] <asn:1>*
fs/exec.c:414:31: got void *
fs/exec.c:986:56: sparse: incorrect type in argument 2 (different address spaces)
fs/exec.c:986:56: expected struct task_struct *parent
fs/exec.c:986:56: got struct task_struct [noderef] <asn:4>*parent
fs/exec.c:1019:17: sparse: incorrect type in assignment (different address spaces)
fs/exec.c:1019:17: expected struct sighand_struct *volatile <noident>
fs/exec.c:1019:17: got struct sighand_struct [noderef] <asn:4>*<noident>
fs/exec.c:1421:70: sparse: incorrect type in argument 1 (different address spaces)
fs/exec.c:1421:70: expected struct task_struct *tsk
fs/exec.c:1421:70: got struct task_struct [noderef] <asn:4>*parent
>> fs/exec.c:1507:53: sparse: incorrect type in argument 2 (different address spaces)
fs/exec.c:1507:53: expected struct fdtable const *fdt
fs/exec.c:1507:53: got struct fdtable [noderef] <asn:4>*fdt
vim +1507 fs/exec.c
1491 bprm->file = file;
1492 if (fd == AT_FDCWD || filename->name[0] == '/') {
1493 bprm->filename = filename->name;
1494 } else {
1495 if (filename->name[0] == '\0')
1496 pathbuf = kasprintf(GFP_TEMPORARY, "/dev/fd/%d", fd);
1497 else
1498 pathbuf = kasprintf(GFP_TEMPORARY, "/dev/fd/%d/%s",
1499 fd, filename->name);
1500 if (!pathbuf) {
1501 retval = -ENOMEM;
1502 goto out_unmark;
1503 }
1504 /* Record that a name derived from an O_CLOEXEC fd will be
1505 * inaccessible after exec. Relies on having exclusive access to
1506 * current->files (due to unshare_files above). */
> 1507 if (close_on_exec(fd, current->files->fdt))
1508 bprm->interp_flags |= BINPRM_FLAGS_PATH_INACCESSIBLE;
1509 bprm->filename = pathbuf;
1510 }
1511 bprm->interp = bprm->filename;
1512
1513 retval = bprm_mm_init(bprm);
1514 if (retval)
1515 goto out_unmark;
---
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