mirror of https://gitee.com/openkylin/linux.git
b501426cf8
If the interface is not in MESH mode, the command 'iw wlanx mpath del' will cause kernel panic. The root cause is null pointer access in mpp_flush_by_proxy(), as the pointer 'sdata->u.mesh.mpp_paths' is NULL for non MESH interface. Unable to handle kernel NULL pointer dereference at virtual address 00000068 [...] PC is at _raw_spin_lock_bh+0x20/0x5c LR is at mesh_path_del+0x1c/0x17c [mac80211] [...] Process iw (pid: 4537, stack limit = 0xd83e0238) [...] [<c021211c>] (_raw_spin_lock_bh) from [<bf8c7648>] (mesh_path_del+0x1c/0x17c [mac80211]) [<bf8c7648>] (mesh_path_del [mac80211]) from [<bf6cdb7c>] (extack_doit+0x20/0x68 [compat]) [<bf6cdb7c>] (extack_doit [compat]) from [<c05c309c>] (genl_rcv_msg+0x274/0x30c) [<c05c309c>] (genl_rcv_msg) from [<c05c25d8>] (netlink_rcv_skb+0x58/0xac) [<c05c25d8>] (netlink_rcv_skb) from [<c05c2e14>] (genl_rcv+0x20/0x34) [<c05c2e14>] (genl_rcv) from [<c05c1f90>] (netlink_unicast+0x11c/0x204) [<c05c1f90>] (netlink_unicast) from [<c05c2420>] (netlink_sendmsg+0x30c/0x370) [<c05c2420>] (netlink_sendmsg) from [<c05886d0>] (sock_sendmsg+0x70/0x84) [<c05886d0>] (sock_sendmsg) from [<c0589f4c>] (___sys_sendmsg.part.3+0x188/0x228) [<c0589f4c>] (___sys_sendmsg.part.3) from [<c058add4>] (__sys_sendmsg+0x4c/0x70) [<c058add4>] (__sys_sendmsg) from [<c0208c80>] (ret_fast_syscall+0x0/0x44) Code: e2822c02 e2822001 e5832004 f590f000 (e1902f9f) ---[ end trace bbd717600f8f884d ]--- Signed-off-by: Miaoqing Pan <miaoqing@codeaurora.org> Link: https://lore.kernel.org/r/1569485810-761-1-git-send-email-miaoqing@codeaurora.org [trim useless data from commit message] Signed-off-by: Johannes Berg <johannes.berg@intel.com> |
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| .. | ||
| certs | ||
| .gitignore | ||
| Kconfig | ||
| Makefile | ||
| ap.c | ||
| chan.c | ||
| core.c | ||
| core.h | ||
| debugfs.c | ||
| debugfs.h | ||
| ethtool.c | ||
| ibss.c | ||
| lib80211.c | ||
| lib80211_crypt_ccmp.c | ||
| lib80211_crypt_tkip.c | ||
| lib80211_crypt_wep.c | ||
| mesh.c | ||
| mlme.c | ||
| nl80211.c | ||
| nl80211.h | ||
| ocb.c | ||
| of.c | ||
| pmsr.c | ||
| radiotap.c | ||
| rdev-ops.h | ||
| reg.c | ||
| reg.h | ||
| scan.c | ||
| sme.c | ||
| sysfs.c | ||
| sysfs.h | ||
| trace.c | ||
| trace.h | ||
| util.c | ||
| wext-compat.c | ||
| wext-compat.h | ||
| wext-core.c | ||
| wext-priv.c | ||
| wext-proc.c | ||
| wext-sme.c | ||
| wext-spy.c | ||