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0ce23d6d42
hdmi-codec oopses the kernel when it is unbound from a successfully bound audio subsystem, and is then rebound: Unable to handle kernel NULL pointer dereference at virtual address 0000001c pgd = ee3f0000 [0000001c] *pgd=3cc59831 Internal error: Oops: 817 [#1] PREEMPT ARM Modules linked in: ext2 snd_soc_spdif_tx vmeta dove_thermal snd_soc_kirkwood ofpart marvell_cesa m25p80 orion_wdt mtd spi_nor des_generic gpio_ir_recv snd_soc_kirkwood_spdif bmm_dmabuf auth_rpcgss nfsd autofs4 etnaviv thermal_sys hwmon gpu_sched tda9950 CPU: 0 PID: 1005 Comm: bash Not tainted 4.20.0+ #1762 Hardware name: Marvell Dove (Cubox) PC is at hdmi_dai_probe+0x68/0x80 LR is at find_held_lock+0x20/0x94 pc : [<c04c7de0>] lr : [<c0063bf4>] psr: 600f0013 sp : ee15bd28 ip : eebd8b1c fp : c093b488 r10: ee048000 r9 : eebdab18 r8 : ee048600 r7 : 00000001 r6 : 00000000 r5 : 00000000 r4 : ee82c100 r3 : 00000006 r2 : 00000001 r1 : c067e38c r0 : ee82c100 Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none[ 297.318599] Control: 10c5387d Table: 2e3f0019 DAC: 00000051 Process bash (pid: 1005, stack limit = 0xee15a248) ... [<c04c7de0>] (hdmi_dai_probe) from [<c04b7060>] (soc_probe_dai.part.9+0x34/0x70) [<c04b7060>] (soc_probe_dai.part.9) from [<c04b81a8>] (snd_soc_instantiate_card+0x734/0xc9c) [<c04b81a8>] (snd_soc_instantiate_card) from [<c04b8b6c>] (snd_soc_add_component+0x29c/0x378) [<c04b8b6c>] (snd_soc_add_component) from [<c04b8c8c>] (snd_soc_register_component+0x44/0x54) [<c04b8c8c>] (snd_soc_register_component) from [<c04c64b4>] (devm_snd_soc_register_component+0x48/0x84) [<c04c64b4>] (devm_snd_soc_register_component) from [<c04c7be8>] (hdmi_codec_probe+0x150/0x260) [<c04c7be8>] (hdmi_codec_probe) from [<c0373124>] (platform_drv_probe+0x48/0x98) This happens because hdmi_dai_probe() attempts to access the HDMI codec private data, but this has not been assigned by hdmi_dai_probe() before it calls devm_snd_soc_register_component(). Move the call to dev_set_drvdata() before devm_snd_soc_register_component() to avoid this oops. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: Mark Brown <broonie@kernel.org> Cc: stable@vger.kernel.org |
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| .. | ||
| ac97 | ||
| aoa | ||
| arm | ||
| atmel | ||
| core | ||
| drivers | ||
| firewire | ||
| hda | ||
| i2c | ||
| isa | ||
| mips | ||
| oss | ||
| parisc | ||
| pci | ||
| pcmcia | ||
| ppc | ||
| sh | ||
| soc | ||
| sparc | ||
| spi | ||
| synth | ||
| usb | ||
| x86 | ||
| xen | ||
| ac97_bus.c | ||
| Kconfig | ||
| last.c | ||
| Makefile | ||
| sound_core.c | ||