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Koen Kooi
6203cbca5c
Signed-off-by: Koen Kooi <koen@dominion.thruhere.net> Signed-off-by: Denys Dmytriyenko <denys@ti.com>
43 lines
1.2 KiB
Diff
43 lines
1.2 KiB
Diff
From 51b23c5c8a3aacf16acf8b723c35a23c07c37115 Mon Sep 17 00:00:00 2001
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From: Dave Jones <davej@redhat.com>
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Date: Fri, 13 Jul 2012 13:35:36 -0400
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Subject: [PATCH 047/109] Remove easily user-triggerable BUG from
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generic_setlease
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commit 8d657eb3b43861064d36241e88d9d61c709f33f0 upstream.
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This can be trivially triggered from userspace by passing in something unexpected.
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kernel BUG at fs/locks.c:1468!
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invalid opcode: 0000 [#1] SMP
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RIP: 0010:generic_setlease+0xc2/0x100
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Call Trace:
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__vfs_setlease+0x35/0x40
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fcntl_setlease+0x76/0x150
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sys_fcntl+0x1c6/0x810
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system_call_fastpath+0x1a/0x1f
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Signed-off-by: Dave Jones <davej@redhat.com>
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Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
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---
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fs/locks.c | 2 +-
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1 files changed, 1 insertions(+), 1 deletions(-)
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diff --git a/fs/locks.c b/fs/locks.c
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index 0d68f1f..6a64f15 100644
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--- a/fs/locks.c
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+++ b/fs/locks.c
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@@ -1465,7 +1465,7 @@ int generic_setlease(struct file *filp, long arg, struct file_lock **flp)
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case F_WRLCK:
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return generic_add_lease(filp, arg, flp);
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default:
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- BUG();
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+ return -EINVAL;
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}
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}
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EXPORT_SYMBOL(generic_setlease);
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--
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1.7.7.6
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