wifi: ath11k: fix monitor mode bringup crash
BugLink: https://bugs.launchpad.net/bugs/2011425
[ Upstream commit
950b43f8bd8a4d476d2da6d2a083a89bcd3c90d7 ]
When the interface is brought up in monitor mode, it leads
to NULL pointer dereference crash. This crash happens when
the packet type is extracted for a SKB. This extraction
which is present in the received msdu delivery path,is
not needed for the monitor ring packets since they are
all RAW packets. Hence appending the flags with
"RX_FLAG_ONLY_MONITOR" to skip that extraction.
Observed calltrace:
Unable to handle kernel NULL pointer dereference at virtual address
0000000000000064
Mem abort info:
ESR = 0x0000000096000004
EC = 0x25: DABT (current EL), IL = 32 bits
SET = 0, FnV = 0
EA = 0, S1PTW = 0
FSC = 0x04: level 0 translation fault
Data abort info:
ISV = 0, ISS = 0x00000004
CM = 0, WnR = 0
user pgtable: 4k pages, 48-bit VAs, pgdp=
0000000048517000
[
0000000000000064] pgd=
0000000000000000, p4d=
0000000000000000
Internal error: Oops:
0000000096000004 [#1] PREEMPT SMP
Modules linked in: ath11k_pci ath11k qmi_helpers
CPU: 2 PID: 1781 Comm: napi/-271 Not tainted
6.1.0-rc5-wt-ath-656295-gef907406320c-dirty #6
Hardware name: Qualcomm Technologies, Inc. IPQ8074/AP-HK10-C2 (DT)
pstate:
60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : ath11k_hw_qcn9074_rx_desc_get_decap_type+0x34/0x60 [ath11k]
lr : ath11k_hw_qcn9074_rx_desc_get_decap_type+0x5c/0x60 [ath11k]
sp :
ffff80000ef5bb10
x29:
ffff80000ef5bb10 x28:
0000000000000000 x27:
ffff000007baafa0
x26:
ffff000014a91ed0 x25:
0000000000000000 x24:
0000000000000000
x23:
ffff800002b77378 x22:
ffff000014a91ec0 x21:
ffff000006c8d600
x20:
0000000000000000 x19:
ffff800002b77740 x18:
0000000000000006
x17:
736564203634343a x16:
656e694c20657079 x15:
0000000000000143
x14:
00000000ffffffea x13:
ffff80000ef5b8b8 x12:
ffff80000ef5b8c8
x11:
ffff80000a591d30 x10:
ffff80000a579d40 x9 :
c0000000ffffefff
x8 :
0000000000000003 x7 :
0000000000017fe8 x6 :
ffff80000a579ce8
x5 :
0000000000000000 x4 :
0000000000000000 x3 :
0000000000000000
x2 :
3a35ec12ed7f8900 x1 :
0000000000000000 x0 :
0000000000000052
Call trace:
ath11k_hw_qcn9074_rx_desc_get_decap_type+0x34/0x60 [ath11k]
ath11k_dp_rx_deliver_msdu.isra.42+0xa4/0x3d0 [ath11k]
ath11k_dp_rx_mon_deliver.isra.43+0x2f8/0x458 [ath11k]
ath11k_dp_rx_process_mon_rings+0x310/0x4c0 [ath11k]
ath11k_dp_service_srng+0x234/0x338 [ath11k]
ath11k_pcic_ext_grp_napi_poll+0x30/0xb8 [ath11k]
__napi_poll+0x5c/0x190
napi_threaded_poll+0xf0/0x118
kthread+0xf4/0x110
ret_from_fork+0x10/0x20
Tested-on: QCN9074 hw1.0 PCI WLAN.HK.2.7.0.1-01744-QCAHKSWPL_SILICONZ-1
Reported-by: Florian Schmidt <florian@fls.name>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=216573
Signed-off-by: Nagarajan Maran <quic_nmaran@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/20221129142532.23421-1-quic_nmaran@quicinc.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Andrea Righi <andrea.righi@canonical.com>