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Álvaro Fernández Rojas 65b7236442 mips: bmips: BCM6358: disable RAC flush for TP1 ... [ Upstream commit ab327f8acd ] RAC flush causes kernel panics on BCM6358 with EHCI/OHCI when booting from TP1: [ 3.881739] usb 1-1: new high-speed USB device number 2 using ehci-platform [ 3.895011] Reserved instruction in kernel code[#1]: [ 3.900113] CPU: 0 PID: 1 Comm: init Not tainted 5.10.16 #0 [ 3.905829] $ 0 : 00000000 10008700 00000000 77d94060 [ 3.911238] $ 4 : 7fd1f088 00000000 81431cac 81431ca0 [ 3.916641] $ 8 : 00000000 ffffefff 8075cd34 00000000 [ 3.922043] $12 : 806f8d40 f3e812b7 00000000 000d9aaa [ 3.927446] $16 : 7fd1f068 7fd1f080 7ff559b8 81428470 [ 3.932848] $20 : 00000000 00000000 55590000 77d70000 [ 3.938251] $24 : 00000018 00000010 [ 3.943655] $28 : 81430000 81431e60 81431f28 800157fc [ 3.949058] Hi : 00000000 [ 3.952013] Lo : 00000000 [ 3.955019] epc : 80015808 setup_sigcontext+0x54/0x24c [ 3.960464] ra : 800157fc setup_sigcontext+0x48/0x24c [ 3.965913] Status: 10008703 KERNEL EXL IE [ 3.970216] Cause : 00800028 (ExcCode 0a) [ 3.974340] PrId : 0002a010 (Broadcom BMIPS4350) [ 3.979170] Modules linked in: ohci_platform ohci_hcd fsl_mph_dr_of ehci_platform ehci_fsl ehci_hcd gpio_button_hotplug usbcore nls_base usb_common [ 3.992907] Process init (pid: 1, threadinfo=(ptrval), task=(ptrval), tls=77e22ec8) [ 4.000776] Stack : 81431ef4 7fd1f080 81431f28 81428470 7fd1f068 81431edc 7ff559b8 81428470 [ 4.009467] 81431f28 7fd1f080 55590000 77d70000 77d5498c 80015c70 806f0000 8063ae74 [ 4.018149] 08100002 81431f28 0000000a 08100002 81431f28 0000000a 77d6b418 00000003 [ 4.026831] ffffffff 80016414 80080734 81431ecc 81431ecc 00000001 00000000 04000000 [ 4.035512] 77d54874 00000000 00000000 00000000 00000000 00000012 00000002 00000000 [ 4.044196] ... [ 4.046706] Call Trace: [ 4.049238] [<80015808>] setup_sigcontext+0x54/0x24c [ 4.054356] [<80015c70>] setup_frame+0xdc/0x124 [ 4.059015] [<80016414>] do_notify_resume+0x1dc/0x288 [ 4.064207] [<80011b50>] work_notifysig+0x10/0x18 [ 4.069036] [ 4.070538] Code: 8fc300b4 00001025 26240008 <ac820000> ac830004 3c048063 0c0228aa 24846a00 26240010 [ 4.080686] [ 4.082517] ---[ end trace 22a8edb41f5f983b ]--- [ 4.087374] Kernel panic - not syncing: Fatal exception [ 4.092753] Rebooting in 1 seconds.. Because the bootloader (CFE) is not initializing the Read-ahead cache properly on the second thread (TP1). Since the RAC was not initialized properly, we should avoid flushing it at the risk of corrupting the instruction stream as seen in the trace above. Fixes: d59098a0e9 ("MIPS: bmips: use generic dma noncoherent ops") Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Sasha Levin <sashal@kernel.org>		History 2023-04-05 11:24:54 +02:00
..
alpha	alpha: fix R_ALPHA_LITERAL reloc for large modules	2023-03-17 08:49:01 +01:00
arc	arc: iounmap() arg is volatile	2022-11-03 23:59:15 +09:00
arm	ARM: dts: imx6sl: tolino-shine2hd: fix usbotg1 pinctrl	2023-03-30 12:47:43 +02:00
arm64	arm64: dts: imx8mm-nitrogen-r2: fix WM8960 clock name	2023-03-30 12:47:56 +02:00
csky	kprobes: treewide: Cleanup the error messages for kprobes	2023-02-22 12:57:00 +01:00
h8300	h8300: Fix build errors from do_exit() to make_task_dead() transition	2023-02-01 08:27:21 +01:00
hexagon	hexagon: Fix function name in die()	2023-02-01 08:27:20 +01:00
ia64	genirq: Add and use an irq_data_update_affinity helper	2023-03-11 13:57:31 +01:00
m68k	m68k: Only force 030 bus error if PC not in exception table	2023-03-30 12:47:53 +02:00
microblaze	exit: Add and use make_task_dead.	2023-02-01 08:27:20 +01:00
mips	mips: bmips: BCM6358: disable RAC flush for TP1	2023-04-05 11:24:54 +02:00
nds32	exit: Add and use make_task_dead.	2023-02-01 08:27:20 +01:00
nios2	exit: Add and use make_task_dead.	2023-02-01 08:27:20 +01:00
openrisc	exit: Add and use make_task_dead.	2023-02-01 08:27:20 +01:00
parisc	genirq: Add and use an irq_data_update_affinity helper	2023-03-11 13:57:31 +01:00
powerpc	powerpc/vmlinux.lds: Don't discard .rela* for relocatable builds	2023-03-17 08:49:03 +01:00
riscv	riscv: Handle zicsr/zifencei issues between clang and binutils	2023-03-30 12:47:59 +02:00
s390	s390/ipl: add missing intersection check to ipl_report handling	2023-03-22 13:31:32 +01:00
sh	sh: sanitize the flags on sigreturn	2023-03-30 12:47:54 +02:00
sparc	sparc: allow PM configs for sparc32 COMPILE_TEST	2023-03-10 09:39:33 +01:00
um	UML: define RUNTIME_DISCARD_EXIT	2023-03-17 08:49:04 +01:00
x86	x86/PVH: obtain VGA console info in Dom0	2023-04-05 11:24:52 +02:00
xtensa	exit: Add and use make_task_dead.	2023-02-01 08:27:20 +01:00
.gitignore	.gitignore: prefix local generated files with a slash	2021-05-02 00:43:35 +09:00
Kconfig	arch: make TRACE_IRQFLAGS_NMI_SUPPORT generic	2022-08-17 14:23:00 +02:00