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ceph: fix possible integer overflow in ceph_zero_objects()

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[ Upstream commit 0abd87942e0c93964e93224836944712feba1d91 ]

In 'ceph_zero_objects', promote 'object_size' to 'u64' to avoid possible
integer overflow.

Compile tested only.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Signed-off-by: Dmitry Kandybka <d.kandybka@gmail.com>
Reviewed-by: Viacheslav Dubeyko <Slava.Dubeyko@ibm.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Dmitry Kandybka 2025-04-22 12:32:04 +03:00 • committed by Greg Kroah-Hartman
commit 6fd52bfecd
1 changed files with 1 additions and 1 deletions
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2
fs/ceph/file.c
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@ -1749,7 +1749,7 @@ static int ceph_zero_objects(struct inode *inode, loff_t offset, loff_t length)
s32 stripe_unit = ci->i_layout.stripe_unit;
s32 stripe_count = ci->i_layout.stripe_count;
s32 object_size = ci->i_layout.object_size;
u64 object_set_size = object_size * stripe_count;
u64 object_set_size = (u64) object_size * stripe_count;
u64 nearly, t;
/* round offset up to next period boundary */