linux-kernel - [4.0-rc+] WARNING: CPU: 0 PID: 1 at ./drivers/dma/dmaengine.c:863 dma_async_device

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 05 Mar 2015 10:04:21 -0500
From:	Peter Hurley <peter@...leysoftware.com>
To:	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Vinod Koul <vinod.koul@...el.com>
CC:	Linux kernel <linux-kernel@...r.kernel.org>
Subject: [4.0-rc+] WARNING: CPU: 0 PID: 1 at ./drivers/dma/dmaengine.c:863
 dma_async_device_register+0xe0/0x540()

First boot of 4.0-rc+ gave me [1] on a Beaglebone Black due to

commit ecc19d17868be9c9f8f00ed928791533c420f3e0
Author: Maxime Ripard <maxime.ripard@...e-electrons.com>
Date:   Mon Nov 17 14:42:53 2014 +0100

    dmaengine: Add a warning for drivers not using the generic slave caps retrieval
    
    For the slave caps retrieval to be really useful, most drivers need to
    implement it.
    
    Hence, we need to be slightly more aggressive, and trigger a warning at
    registration time for drivers that don't fill their caps infos in order to
    encourage them to implement it.
    
    Signed-off-by: Maxime Ripard <maxime.ripard@...e-electrons.com>
    Acked-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
    Signed-off-by: Vinod Koul <vinod.koul@...el.com>

Regards,
Peter Hurley

[1] 

[    1.848374] WARNING: CPU: 0 PID: 1 at /home/peter/src/kernels/mainline/drivers/dma/dmaengine.c:863 dma_async_device_register+0xe0/0x540()
[    1.860798] this driver doesn't support generic slave capabilities reporting
[    1.867893] Modules linked in:
[    1.870993] CPU: 0 PID: 1 Comm: swapper Not tainted 4.0.0-rc2+ #115
[    1.877302] Hardware name: Generic AM33XX (Flattened Device Tree)
[    1.883478] [<c00164b8>] (unwind_backtrace) from [<c00135e8>] (show_stack+0x20/0x24)
[    1.891307] [<c00135e8>] (show_stack) from [<c091f7a0>] (dump_stack+0x24/0x28)
[    1.898602] [<c091f7a0>] (dump_stack) from [<c003dff4>] (warn_slowpath_common+0x94/0xc0)
[    1.906753] [<c003dff4>] (warn_slowpath_common) from [<c003e060>] (warn_slowpath_fmt+0x40/0x48)
[    1.915515] [<c003e060>] (warn_slowpath_fmt) from [<c0561fd8>] (dma_async_device_register+0xe0/0x540)
[    1.924806] [<c0561fd8>] (dma_async_device_register) from [<c056b3cc>] (cppi41_dma_probe+0x470/0x4c0)
[    1.934397] [<c056b3cc>] (cppi41_dma_probe) from [<c05f7e6c>] (platform_drv_probe+0x54/0xb4)
[    1.942924] [<c05f7e6c>] (platform_drv_probe) from [<c05f5bac>] (driver_probe_device+0x14c/0x3a8)
[    1.951861] [<c05f5bac>] (driver_probe_device) from [<c05f5e58>] (__device_attach+0x50/0x54)
[    1.960360] [<c05f5e58>] (__device_attach) from [<c05f3c94>] (bus_for_each_drv+0x68/0x9c)
[    1.968596] [<c05f3c94>] (bus_for_each_drv) from [<c05f59ec>] (device_attach+0x84/0x98)
[    1.976656] [<c05f59ec>] (device_attach) from [<c05f4e70>] (bus_probe_device+0x94/0xb8)
[    1.984717] [<c05f4e70>] (bus_probe_device) from [<c05f2cb0>] (device_add+0x3dc/0x59c)
[    1.992700] [<c05f2cb0>] (device_add) from [<c07a6f5c>] (of_device_add+0x44/0x4c)
[    2.000242] [<c07a6f5c>] (of_device_add) from [<c07a78d4>] (of_platform_device_create_pdata+0x140/0x234)
[    2.009788] [<c07a78d4>] (of_platform_device_create_pdata) from [<c07a7af8>] (of_platform_bus_create+0x10c/0x234)
[    2.020118] [<c07a7af8>] (of_platform_bus_create) from [<c07a7dbc>] (of_platform_populate+0x6c/0xc8)
[    2.029319] [<c07a7dbc>] (of_platform_populate) from [<c06e83f8>] (am335x_child_probe+0x38/0x54)
[    2.038168] [<c06e83f8>] (am335x_child_probe) from [<c05f7e6c>] (platform_drv_probe+0x54/0xb4)
[    2.046840] [<c05f7e6c>] (platform_drv_probe) from [<c05f5bac>] (driver_probe_device+0x14c/0x3a8)
[    2.055774] [<c05f5bac>] (driver_probe_device) from [<c05f5ef8>] (__driver_attach+0x9c/0xa0)
[    2.064268] [<c05f5ef8>] (__driver_attach) from [<c05f3bcc>] (bus_for_each_dev+0x70/0xa4)
[    2.072501] [<c05f3bcc>] (bus_for_each_dev) from [<c05f555c>] (driver_attach+0x2c/0x30)
[    2.080561] [<c05f555c>] (driver_attach) from [<c05f515c>] (bus_add_driver+0x170/0x22c)
[    2.088623] [<c05f515c>] (bus_add_driver) from [<c05f6878>] (driver_register+0x88/0x108)
[    2.096770] [<c05f6878>] (driver_register) from [<c05f7d98>] (__platform_driver_register+0x64/0x6c)
[    2.105884] [<c05f7d98>] (__platform_driver_register) from [<c0d8df0c>] (am335x_child_init+0x1c/0x20)
[    2.115171] [<c0d8df0c>] (am335x_child_init) from [<c0008ad8>] (do_one_initcall+0xe8/0x230)
[    2.123592] [<c0008ad8>] (do_one_initcall) from [<c0d45f90>] (kernel_init_freeable+0x1e0/0x284)
[    2.132355] [<c0d45f90>] (kernel_init_freeable) from [<c0919044>] (kernel_init+0x1c/0x100)
[    2.140681] [<c0919044>] (kernel_init) from [<c000f8d0>] (ret_from_fork+0x14/0x24)

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/