Hi,
The following test script triggers a memory leak:
insmod mwifiex_sdio.ko
sleep 1
ifconfig eth0 up
iwlist eth0 scan &
sleep 0.5
rmmod mwifiex_sdio
kmemleak says:
unreferenced object 0xed8bb200 (size 512):
comm "iwlist", pid 666, jiffies 4294952762 (age 16.330s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 e8 b8 8b ed 01 01 00 ................
01 00 00 00 00 00 02 00 01 00 00 00 00 00 03 00 ................
backtrace:
[<c00a7f1c>] create_object+0x118/0x2b0
[<c03db82c>] kmemleak_alloc+0x80/0xc4
[<c00a3444>] kmem_cache_alloc+0xa8/0x110
[<c022f8ac>] mwifiex_cfg80211_scan+0xc0/0x300
[<c03bfe2c>] cfg80211_wext_siwscan+0x280/0x2f8
[<c03d7cf8>] ioctl_standard_call+0x290/0x3b8
[<c03d7f14>] wext_handle_ioctl+0xf4/0x1c0
[<c0308d70>] dev_ioctl+0x6b4/0x6dc
[<c02f3f00>] sock_ioctl+0x254/0x28c
[<c00b994c>] vfs_ioctl+0x30/0x44
[<c00ba504>] do_vfs_ioctl+0x560/0x5b8
[<c00ba59c>] sys_ioctl+0x40/0x68
[<c000eb40>] ret_fast_syscall+0x0/0x30
[<ffffffff>] 0xffffffff
The test environment is XO-4 running Linux 3.8
(http://wiki.laptop.org/go/User:DanielDrake/Run_upstream_kernel_on_XO-4).
NetworkManager can be enabled or disabled (doesn't matter) and the
driver is hacked to remove p2p0 and uap0 interfaces. And these patches
are applied:
mwifiex: fix race when queuing commands
mwifiex: skip pending commands after function shutdown
mwifiex: cancel cmd timer and free curr_cmd in shutdown process
mwifiex: fix negative cmd_pending count
mwifiex: complete last internal scan
I'm relatively sure this issue is old and not related to those patches
so I'm creating a new thread for it.
Thanks
Daniel
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