renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-23 04:34:11 +08:00
Code
783502719c
linux-next/arch/arm
History
Vladimir Murzin 783502719c ARM: OMAP4: cpuidle: fix: call cpu_cluster_pm_exit conditionally 
We call cpu_cluster_pm_enter for dev->cpu == 0 only, but
cpu_cluster_pm_exit called without that check.

Because of that unhandled page fault may happen:

[    3.803405] Unable to handle kernel paging request at virtual address 00002500
[    3.810974] pgd = c0004000
[    3.813812] [00002500] *pgd=00000000
[    3.817596] Internal error: Oops: 5 [#1] SMP ARM
[    3.822418] Modules linked in:
[    3.825653] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 3.11.0-rc6+ #21
[    3.832397] task: ed86ef40 ti: ed896000 task.ti: ed896000
[    3.838073] PC is at irq_notifier+0x234/0x25c
[    3.842651] LR is at irq_notifier+0x218/0x25c
[    3.847229] pc : [<c0029ed8>]    lr : [<c0029ebc>]    psr: 80000193
[    3.847229] sp : ed897ee8  ip : 00000005  fp : 00000001
[    3.859283] r10: c0b395f0  r9 : c0b30594  r8 : c0b8c2ac
[    3.864776] r7 : ffffffff  r6 : 00000000  r5 : 00000005  r4 : 00000000
[    3.871643] r3 : 00002500  r2 : 00000000  r1 : 00000005  r0 : 44302244
[    3.878479] Flags: Nzcv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment kernel
[    3.886260] Control: 10c5387d  Table: 8000404a  DAC: 00000015
[    3.892272] Process swapper/1 (pid: 0, stack limit = 0xed896240)
[    3.898590] Stack: (0xed897ee8 to 0xed898000)
[    3.903167] 7ee0:                   c0979c3a 00000001 ed897ef8 ed896000 c0014f7c 00000000
[    3.911743] 7f00: 00000005 00000000 ffffffff c0b8c2ac c0b395f0 c077c04c c0c94b48 c0b3953c
[    3.920318] 7f20: c0bcd928 00000002 c0b39524 c00cfad8 00000000 ffffffff 00000000 c00cfb10
[    3.928924] 7f40: c14e62c0 c002c1c8 c002c0ac c14e62c0 00000002 e251c37d 00000000 c0b39548
[    3.937499] 7f60: c0b395f0 c05a1bc4 e251c37d 00000000 00000005 c05a3870 edc90380 edc90380
[    3.946105] 7f80: edc90394 c14e62c0 c0b39548 00000002 c0784064 c05a3c78 c0b395e0 c14e62c0
[    3.954681] 7fa0: 00000002 c0b39548 c0bc9db8 00000000 00000001 c05a1dc0 ed896000 00000015
[    3.963287] 7fc0: c0bc9db8 ed896000 8000406a c0b30594 c0784064 c000e504 00000746 c007a528
[    3.971862] 7fe0: 00000001 0000001d 600001d3 c0bcc004 00000000 800086c4 ee0aa6a7 d2aabaa9
[    3.980499] [<c0029ed8>] (irq_notifier+0x234/0x25c) from [<c077c04c>] (notifier_call_chain+0x38/0x68)
[    3.990173] [<c077c04c>] (notifier_call_chain+0x38/0x68) from [<c00cfad8>] (cpu_pm_notify+0x20/0x38)
[    3.999786] [<c00cfad8>] (cpu_pm_notify+0x20/0x38) from [<c00cfb10>] (cpu_cluster_pm_exit+0x20/0x50)
[    4.009399] [<c00cfb10>] (cpu_cluster_pm_exit+0x20/0x50) from [<c002c1c8>] (omap_enter_idle_coupled+0x11c/0x14c)
[    4.020111] [<c002c1c8>] (omap_enter_idle_coupled+0x11c/0x14c) from [<c05a1bc4>] (cpuidle_enter_state+0x40/0xec)
[    4.030822] [<c05a1bc4>] (cpuidle_enter_state+0x40/0xec) from [<c05a3c78>] (cpuidle_enter_state_coupled+0x1f4/0x240)
[    4.041870] [<c05a3c78>] (cpuidle_enter_state_coupled+0x1f4/0x240) from [<c05a1dc0>] (cpuidle_idle_call+0x150/0x228)
[    4.052947] [<c05a1dc0>] (cpuidle_idle_call+0x150/0x228) from [<c000e504>] (arch_cpu_idle+0x8/0x38)
[    4.062499] [<c000e504>] (arch_cpu_idle+0x8/0x38) from [<c007a528>] (cpu_startup_entry+0x178/0x1e4)
[    4.071990] [<c007a528>] (cpu_startup_entry+0x178/0x1e4) from [<800086c4>] (0x800086c4)
[    4.080383] Code: e5922288 03a03b0a 13a03c25 e0823003 (e5932000)
[    4.086791] ---[ end trace d83954a84a6fa69e ]---

It is supposed that sar_base is initialized in irq_save_context, which
is called on CPU_CLUSTER_PM_ENTER notification. If this notification
has been missed and CPU_CLUSTER_PM_EXIT is received sar_base is NULL.

Fix it by calling CPU_CLUSTER_PM_{ENTER,EXIT} under the same condition.

Signed-off-by: Vladimir Murzin <murzin.v@gmail.com>
Acked-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2013-09-18 12:02:00 -07:00
..
boot ARM: dts: sun7i: olinuxino-micro: Enable the EMAC 2013-09-12 12:22:48 -07:00
common Merge branch 'timers/core' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2013-09-16 16:10:26 -04:00
configs ARM: SoC late changes for v3.12 2013-09-09 16:35:29 -07:00
crypto
include ARM: SoC late changes for v3.12 2013-09-09 16:35:29 -07:00
kernel ARM: SoC platform changes for 3.12 2013-09-06 13:30:06 -07:00
kvm Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm 2013-09-05 18:07:32 -07:00
lib ARM: 7835/2: fix modular build of xor_blocks() with NEON enabled 2013-09-09 15:24:47 +01:00
mach-at91 ARM: SoC late changes for v3.12 2013-09-09 16:35:29 -07:00
mach-bcm ARM: bcm: Make secure API call optional 2013-08-20 10:51:39 -07:00
mach-bcm2835
mach-clps711x ARM: clps711x: edb7211: Remove extra iotable_init() call 2013-08-13 23:29:16 -07:00
mach-cns3xxx
mach-davinci ARM: SoC platform changes for 3.12 2013-09-06 13:30:06 -07:00
mach-dove ARM: SoC board updates for 3.12 2013-09-06 13:34:43 -07:00
mach-ebsa110 ARM: debug: move 8250 debug include into arch/arm/include/debug/ 2013-08-25 17:11:02 +01:00
mach-ep93xx ARM: SoC fixes for 3.12 2013-09-12 13:59:31 -07:00
mach-exynos ARM: SoC late changes for v3.12 2013-09-09 16:35:29 -07:00
mach-footbridge ARM: debug: move 8250 debug include into arch/arm/include/debug/ 2013-08-25 17:11:02 +01:00
mach-gemini ARM: debug: move 8250 debug include into arch/arm/include/debug/ 2013-08-25 17:11:02 +01:00
mach-highbank ARM: SoC late changes for v3.12 2013-09-09 16:35:29 -07:00
mach-imx Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma 2013-09-10 13:37:36 -07:00
mach-integrator ARM: debug: move PL01X debug include into arch/arm/include/debug/ 2013-08-25 17:11:06 +01:00
mach-iop13xx ARM: debug: move 8250 debug include into arch/arm/include/debug/ 2013-08-25 17:11:02 +01:00
mach-iop32x ARM: debug: move 8250 debug include into arch/arm/include/debug/ 2013-08-25 17:11:02 +01:00
mach-iop33x ARM: debug: move 8250 debug include into arch/arm/include/debug/ 2013-08-25 17:11:02 +01:00
mach-ixp4xx ARM: debug: move 8250 debug include into arch/arm/include/debug/ 2013-08-25 17:11:02 +01:00
mach-keystone Omap fixes for the merge window that are not urgent enough 2013-08-29 19:12:04 -07:00
mach-kirkwood ARM: SoC board updates for 3.12 2013-09-06 13:34:43 -07:00
mach-ks8695 gpio: (gpio-pca953x) move header to linux/platform_data/ 2013-08-29 12:33:52 -07:00
mach-lpc32xx ARM: debug: move 8250 debug include into arch/arm/include/debug/ 2013-08-25 17:11:02 +01:00
mach-mmp ARM: SoC late changes for v3.12 2013-09-09 16:35:29 -07:00
mach-msm ARM: SoC cleanups for 3.12 2013-09-06 13:21:16 -07:00
mach-mv78xx0 ARM: SoC platform changes for 3.12 2013-09-06 13:30:06 -07:00
mach-mvebu Merge branch 'timers/core' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2013-09-16 16:10:26 -04:00
mach-mxs ARM: mxs: pm: Include "pm.h" 2013-08-18 16:34:57 +08:00
mach-netx
mach-nomadik ARM: nomadik: switch to use the Nomadik I2C driver 2013-08-07 00:59:06 +02:00
mach-nspire
mach-omap1 ARM: DRA7: id: Add cpu detection support for DRA7xx based SoCs' 2013-08-13 16:58:08 +05:30
mach-omap2 ARM: OMAP4: cpuidle: fix: call cpu_cluster_pm_exit conditionally 2013-09-18 12:02:00 -07:00
mach-orion5x ARM: SoC board updates for 3.12 2013-09-06 13:34:43 -07:00
mach-picoxcell
mach-prima2 ARM: SoC platform changes for 3.12 2013-09-06 13:30:06 -07:00
mach-pxa ARM: SoC DT updates for 3.12 2013-09-06 13:26:27 -07:00
mach-realview ARM: SoC cleanups for 3.12 2013-09-06 13:21:16 -07:00
mach-rockchip
mach-rpc ARM: debug: move 8250 debug include into arch/arm/include/debug/ 2013-08-25 17:11:02 +01:00
mach-s3c24xx ARM: SAMSUNG: Remove pwm-clock infrastructure 2013-08-12 21:53:24 +02:00
mach-s3c64xx gpio: (gpio-pca953x) move header to linux/platform_data/ 2013-08-29 12:33:52 -07:00
mach-s5p64x0 ARM: SAMSUNG: Remove remaining uses of plat/regs-timer.h header 2013-08-12 21:53:24 +02:00
mach-s5pc100 ARM: SAMSUNG: Remove pwm-clock infrastructure 2013-08-12 21:53:24 +02:00
mach-s5pv210 ARM: SAMSUNG: Remove remaining uses of plat/regs-timer.h header 2013-08-12 21:53:24 +02:00
mach-sa1100
mach-shark
mach-shmobile ARM: shmobile: lager: Do not use register_type field of struct sh_eth_plat_data 2013-09-09 17:25:51 -07:00
mach-socfpga
mach-spear ARM: SoC cleanups for 3.12 2013-09-06 13:21:16 -07:00
mach-sti ARM: STi: remove sti_secondary_start from INIT section. 2013-08-04 13:40:55 -07:00
mach-sunxi ARM: sunxi: Introduce Allwinner A20 support 2013-08-16 23:23:41 +02:00
mach-tegra ARM: SoC platform changes for 3.12 2013-09-06 13:30:06 -07:00
mach-u300
mach-ux500 ARM: SoC late changes for v3.12 2013-09-09 16:35:29 -07:00
mach-versatile Merge branch 'versatile/fixes' into fixes 2013-09-09 17:31:04 -07:00
mach-vexpress ARM: vexpress: allow dcscb and tc2_pm in a combined ARMv6+v7 build 2013-09-09 17:38:20 -07:00
mach-virt
mach-vt8500
mach-w90x900
mach-zynq arm: Xilinx Zynq cleanup patches for v3.12 2013-08-20 15:05:31 -07:00
mm arch: mm: pass userspace fault flag to generic fault handler 2013-09-12 15:38:01 -07:00
net
nwfpe
oprofile
plat-iop
plat-omap ARM: SoC platform changes for 3.12 2013-09-06 13:30:06 -07:00
plat-orion ARM: plat-orion: add reg offset to DT irq driver stub 2013-07-25 21:07:33 +00:00
plat-pxa ARM: pxa: ssp: Check return values from phandle lookups 2013-09-09 17:14:09 -07:00
plat-samsung ARM: SoC cleanups for 3.12 2013-09-06 13:21:16 -07:00
plat-versatile
tools
vfp
xen Linux 3.11-rc7 2013-09-09 12:05:37 -04:00
Kconfig Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
Kconfig-nommu
Kconfig.debug ARM: SoC cleanups for 3.12 2013-09-06 13:21:16 -07:00
Makefile Merge branch 'zynq/dt' into next/dt 2013-08-14 08:14:50 -07:00