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| author | Dave Jones <davej@redhat.com> | 2012-07-13 13:35:36 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-07-13 10:50:23 -0700 |
| commit | 8d657eb3b43861064d36241e88d9d61c709f33f0 (patch) | |
| tree | 4f50a3fbb59cc9a794092c1f549b6bbc6510ce74 /fs/locks.c | |
| parent | 39ea32ca7e425cde24df04f34bf76746ea028681 (diff) | |
| download | lwn-8d657eb3b43861064d36241e88d9d61c709f33f0.tar.gz lwn-8d657eb3b43861064d36241e88d9d61c709f33f0.zip | |
Remove easily user-triggerable BUG from generic_setlease
This can be trivially triggered from userspace by passing in something unexpected.
kernel BUG at fs/locks.c:1468!
invalid opcode: 0000 [#1] SMP
RIP: 0010:generic_setlease+0xc2/0x100
Call Trace:
__vfs_setlease+0x35/0x40
fcntl_setlease+0x76/0x150
sys_fcntl+0x1c6/0x810
system_call_fastpath+0x1a/0x1f
Signed-off-by: Dave Jones <davej@redhat.com>
Cc: stable@kernel.org # 3.2+
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/locks.c')
| -rw-r--r-- | fs/locks.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/locks.c b/fs/locks.c index 814c51d0de47..fce6238d52c1 100644 --- a/fs/locks.c +++ b/fs/locks.c @@ -1465,7 +1465,7 @@ int generic_setlease(struct file *filp, long arg, struct file_lock **flp) case F_WRLCK: return generic_add_lease(filp, arg, flp); default: - BUG(); + return -EINVAL; } } EXPORT_SYMBOL(generic_setlease); |