Martin Kennedy reported:
|Presently, I get this kernel panic on mpc85xx (Aerohive HiveAP 370)
|on OpenWrt 'master' which occurs right as the second processor is
|initialized:
|
|[ 0.478804] rcu: Hierarchical SRCU implementation.
|[ 0.535569] dyndbg: Ignore empty _ddebug table in a CONFIG_DYNAMIC_DEBUG_CORE build
|[ 0.627233] smp: Bringing up secondary CPUs ...
|[ 0.681659] kernel tried to execute user page (0) - exploit attempt? (uid: 0)
|[ 0.766618] BUG: Unable to handle kernel instruction fetch (NULL pointer?)
|[ 0.848899] Faulting instruction address: 0x00000000
|[ 0.908273] Oops: Kernel access of bad area, sig: 11 [#1]
|[ 0.972851] BE PAGE_SIZE=4K SMP NR_CPUS=2 P1020 RDB
|[ 1.031179] Modules linked in:
|[ 1.067640] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.10.80 #0
|[ 1.139507] NIP: 00000000 LR: c0021d2c CTR: 00000000
|[ 1.199921] REGS: c1051cf0 TRAP: 0400 Not tainted (5.10.80)
|[...]
|[ 1.758220] NIP [00000000] 0x0
|[ 1.794688] LR [c0021d2c] smp_85xx_kick_cpu+0xe8/0x568
|[ 1.856126] Call Trace:
|[ 1.885295] [c1051da8] [c0021cb8] smp_85xx_kick_cpu+0x74/0x568 (unreliable)
|[ 1.968633] [c1051de8] [c0011460] __cpu_up+0xc0/0x228
|[ 2.029038] [c1051e18] [c0031bbc] bringup_cpu+0x30/0x224
|[ 2.092572] [c1051e48] [c0031f3c] cpu_up.constprop.0+0x180/0x33c
|[..]
|[ 2.727952] ---[ end trace 9b796a4bafb6bc14 ]---
|[ 3.800879] Kernel panic - not syncing: Fatal exception
|[ 3.862353] Rebooting in 1 seconds..
|[ 5.905097] System Halted, OK to turn off power
|
|I bisected this down to commit 3ae5da5adc ("kernel: bump 5.10 to 5.10.80");
|that is, I don't get the panic right before this commit, but I do after.
He reported the issue upstream and Xiaoming Ni from huawei came up with
the patch (that is on it's way to upstream). While the AP370 is not in
Openwrt, this will likely affect other SMP P1020 devices OpenWrt ships
with: like the AP330, Enterasys WS-AP3710i, etc.
Reported-by: Martin Kennedy <hurricos@gmail.com>
Tested-by: Martin Kennedy <hurricos@gmail.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Also add a new kconfig symbol (CONFIG_KCMP) to the generic config,
disabling the SYS_kcmp syscall (it was split from
CONFIG_CHECKPOINT_RESTORE, which is disabled by default, so the
previous behaviour is kept).
Removed (upstreamed) patches:
070-net-icmp-pass-zeroed-opts-from-icmp-v6-_ndo_send-bef.patch
081-wireguard-device-do-not-generate-ICMP-for-non-IP-pac.patch
082-wireguard-queueing-get-rid-of-per-peer-ring-buffers.patch
083-wireguard-kconfig-use-arm-chacha-even-with-no-neon.patch
830-v5.12-0002-usb-serial-option-update-interface-mapping-for-ZTE-P685M.patch
Manually rebased patches:
313-helios4-dts-status-led-alias.patch
104-powerpc-mpc85xx-change-P2020RDB-dts-file-for-OpenWRT.patch
Run tested:
ath79 (TL-WDR3600)
mvebu (Turris Omnia)
Signed-off-by: Rui Salvaterra <rsalvaterra@gmail.com>
At this moment driver start fail with error:
[ 3.771991] fsl,elbc-fcm-nand: probe of ffa00000.nand failed with error -22
elbc-fcm-nand driver use legacy method of ecc mode detection. It detect hw/sw
ecc mode when system configure it to "none". [1]
This patch adds 'nand-ecc-mode = "none"' propoerty to use generic driver
ecc mode detection.
[1] https://elixir.bootlin.com/linux/v5.10.18/source/drivers/mtd/nand/raw/fsl_elbc_nand.c#L730
Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>
Tested on: Sophos RED 15W
The TP-Link WL-WDR4900 needs to be disabled when 5.10 becomes the
default kernel.
When building with all kmods enabled, the resulting kernel image
exceeds the maximum size the bootloader reads from the flash.
For more information, see GitHub issue #1773
Signed-off-by: David Bauer <mail@david-bauer.net>
