Mohammed Shafi Shajakhan 02a9e08d73 ath10k: Avoid potential page alloc BUG_ON in tx free path ... 'ath10k_htt_tx_free_cont_txbuf' and 'ath10k_htt_tx_free_cont_frag_desc' have NULL pointer checks to avoid crash if they are called twice but this is as of now not sufficient as these pointers are not assigned to NULL once the contiguous DMA memory allocation is freed, fix this. Though this may not be hit with the explicity check of state variable 'tx_mem_allocated' check, good to have this addressed as well. Below BUG_ON is hit when the above scenario is simulated with kernel debugging enabled page:f6d09a00 count:0 mapcount:-127 mapping: (null) index:0x0 flags: 0x40000000() page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) == 0) ------------[ cut here ]------------ kernel BUG at ./include/linux/mm.h:445! invalid opcode: 0000 [#1] SMP DEBUG_PAGEALLOC EIP is at put_page_testzero.part.88+0xd/0xf Call Trace: [<c118a2cc>] __free_pages+0x3c/0x40 [<c118a30e>] free_pages+0x3e/0x50 [<c10222b4>] dma_generic_free_coherent+0x24/0x30 [<f8c1d9a8>] ath10k_htt_tx_free_cont_txbuf+0xf8/0x140 [<f8c1e2a9>] ath10k_htt_tx_destroy+0x29/0xa0 [<f8c143e0>] ath10k_core_destroy+0x60/0x80 [ath10k_core] [<f8acd7e9>] ath10k_pci_remove+0x79/0xa0 [ath10k_pci] [<c13ed7a8>] pci_device_remove+0x38/0xb0 [<c14d3492>] __device_release_driver+0x72/0x100 [<c14d36b7>] driver_detach+0x97/0xa0 [<c14d29c0>] bus_remove_driver+0x40/0x80 [<c14d427a>] driver_unregister+0x2a/0x60 [<c13ec768>] pci_unregister_driver+0x18/0x70 [<f8aced4f>] ath10k_pci_exit+0xd/0x2be [ath10k_pci] [<c1101e78>] SyS_delete_module+0x158/0x210 [<c11b34f1>] ? __might_fault+0x41/0xa0 [<c11b353b>] ? __might_fault+0x8b/0xa0 [<c1001a4b>] do_fast_syscall_32+0x9b/0x1c0 [<c178da34>] sysenter_past_esp+0x45/0x74 Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qti.qualcomm.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>		2016-12-15 11:17:52 +02:00
..
admtek	adm80211: add checks for dma mapping errors	2016-12-05 13:10:53 +02:00
ath	ath10k: Avoid potential page alloc BUG_ON in tx free path	2016-12-15 11:17:52 +02:00
atmel	net: use core MTU range checking in wireless drivers	2016-10-20 14:51:08 -04:00
broadcom	wireless-drivers-next patches for 4.10	2016-12-02 13:58:10 -05:00
cisco	net: use core MTU range checking in wireless drivers	2016-10-20 14:51:08 -04:00
intel	iwlwifi: use reset to set transport header	2016-12-03 15:49:16 -05:00
intersil	wireless: fix bogus maybe-uninitialized warning	2016-11-17 08:46:38 +02:00
marvell	mwifiex: clean up some messy indenting	2016-12-05 13:10:11 +02:00
mediatek	mt7601u: wait for clear rxq when stopping mac	2016-11-29 17:32:32 +02:00
ralink	wireless-drivers-next patches for 4.10	2016-11-27 20:26:59 -05:00
realtek	wireless-drivers-next patches for 4.10	2016-12-02 13:58:10 -05:00
rsi	rsi: Add support for 802.11d	2016-11-25 11:47:36 +02:00
st	cw1200: fix bogus maybe-uninitialized warning	2016-11-17 08:47:58 +02:00
ti	wireless-drivers-next patches for 4.10	2016-11-27 20:26:59 -05:00
zydas	net: deprecate eth_change_mtu, remove usage	2016-10-13 09:36:57 -04:00
Kconfig	wireless: deprecate WDS and disable by default	2016-10-27 09:08:43 +02:00
mac80211_hwsim.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2016-11-22 13:27:16 -05:00
mac80211_hwsim.h	drivers/wireless: use nla_put_u64_64bit()	2016-04-26 12:00:48 -04:00
Makefile
ray_cs.c	net: deprecate eth_change_mtu, remove usage	2016-10-13 09:36:57 -04:00
ray_cs.h
rayctl.h
rndis_wlan.c	nl80211: support beacon report scanning	2016-07-06 14:51:31 +02:00
wl3501_cs.c	net: deprecate eth_change_mtu, remove usage	2016-10-13 09:36:57 -04:00
wl3501.h