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s390/ctcm: Fix double-kfree

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[ Upstream commit da02a1824884d6c84c5e5b5ac373b0c9e3288ec2 ]

The function 'mpc_rcvd_sweep_req(mpcginfo)' is called conditionally
from function 'ctcmpc_unpack_skb'. It frees passed mpcginfo.
After that a call to function 'kfree' in function 'ctcmpc_unpack_skb'
frees it again.

Remove 'kfree' call in function 'mpc_rcvd_sweep_req(mpcginfo)'.

Bug detected by the clang static analyzer.

Fixes: 0c0b20587b9f25a2 ("s390/ctcm: fix potential memory leak")
Reviewed-by: Aswin Karuvally <aswin@linux.ibm.com>
Signed-off-by: Aleksei Nikiforov <aleksei.nikiforov@linux.ibm.com>
Signed-off-by: Aswin Karuvally <aswin@linux.ibm.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20251112182724.1109474-1-aswin@linux.ibm.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Aleksei Nikiforov 2025-11-12 19:27:24 +01:00 • committed by Greg Kroah-Hartman
commit 06f1dd1de0
1 changed files with 0 additions and 1 deletions
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1
drivers/s390/net/ctcm_mpc.c
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@ -712,7 +712,6 @@ static void mpc_rcvd_sweep_req(struct mpcg_info *mpcginfo)
grp->sweep_req_pend_num--;
ctcmpc_send_sweep_resp(ch);
kfree(mpcginfo);
return;
}