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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-07-06 01:05:24 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-07-06 01:05:24 +0200 |
| commit | 7114f51fcb979f167ab5f625ac74059dcb1afc28 (patch) | |
| tree | cb15e7498eccb41a38bd2ff20e873ffb0bfb7c1d /net/ipv6/ipv6_sockglue.c | |
| parent | Merge branch 'timers-compat' of git://git.kernel.org/pub/scm/linux/kernel/git... (diff) | |
| parent | bpf: don't open-code memdup_user() (diff) | |
| download | linux-7114f51fcb979f167ab5f625ac74059dcb1afc28.tar.xz linux-7114f51fcb979f167ab5f625ac74059dcb1afc28.zip | |
Merge branch 'work.memdup_user' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull memdup_user() conversions from Al Viro:
"A fairly self-contained series - hunting down open-coded memdup_user()
and memdup_user_nul() instances"
* 'work.memdup_user' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
bpf: don't open-code memdup_user()
kimage_file_prepare_segments(): don't open-code memdup_user()
ethtool: don't open-code memdup_user()
do_ip_setsockopt(): don't open-code memdup_user()
do_ipv6_setsockopt(): don't open-code memdup_user()
irda: don't open-code memdup_user()
xfrm_user_policy(): don't open-code memdup_user()
ima_write_policy(): don't open-code memdup_user_nul()
sel_write_validatetrans(): don't open-code memdup_user_nul()
Diffstat (limited to 'net/ipv6/ipv6_sockglue.c')
| -rw-r--r-- | net/ipv6/ipv6_sockglue.c | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c index 85404e7c3114..02d795fe3d7f 100644 --- a/net/ipv6/ipv6_sockglue.c +++ b/net/ipv6/ipv6_sockglue.c @@ -735,14 +735,9 @@ done: retv = -ENOBUFS; break; } - gsf = kmalloc(optlen, GFP_KERNEL); - if (!gsf) { - retv = -ENOBUFS; - break; - } - retv = -EFAULT; - if (copy_from_user(gsf, optval, optlen)) { - kfree(gsf); + gsf = memdup_user(optval, optlen); + if (IS_ERR(gsf)) { + retv = PTR_ERR(gsf); break; } /* numsrc >= (4G-140)/128 overflow in 32 bits */ |