forked from luck/tmp_suning_uos_patched
a4301d06a0
[ Upstream commit 733c99ee8be9a1410287cdbb943887365e83b2d6 ] In netlbl_cipsov4_add_std() when 'doi_def->map.std' alloc failed, we sometime observe panic: BUG: kernel NULL pointer dereference, address: ... RIP: 0010:cipso_v4_doi_free+0x3a/0x80 ... Call Trace: netlbl_cipsov4_add_std+0xf4/0x8c0 netlbl_cipsov4_add+0x13f/0x1b0 genl_family_rcv_msg_doit.isra.15+0x132/0x170 genl_rcv_msg+0x125/0x240 This is because in cipso_v4_doi_free() there is no check on 'doi_def->map.std' when 'doi_def->type' equal 1, which is possibe, since netlbl_cipsov4_add_std() haven't initialize it before alloc 'doi_def->map.std'. This patch just add the check to prevent panic happen for similar cases. Reported-by: Abaci <abaci@linux.alibaba.com> Signed-off-by: Michael Wang <yun.wang@linux.alibaba.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org> |
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| .. | ||
| Kconfig | ||
| Makefile | ||
| netlabel_addrlist.c | ||
| netlabel_addrlist.h | ||
| netlabel_calipso.c | ||
| netlabel_calipso.h | ||
| netlabel_cipso_v4.c | ||
| netlabel_cipso_v4.h | ||
| netlabel_domainhash.c | ||
| netlabel_domainhash.h | ||
| netlabel_kapi.c | ||
| netlabel_mgmt.c | ||
| netlabel_mgmt.h | ||
| netlabel_unlabeled.c | ||
| netlabel_unlabeled.h | ||
| netlabel_user.c | ||
| netlabel_user.h | ||