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In case of corrupt images, multiple interrupts may occur
due to different error scenarios.
Since we are removing the src and dest buffers in the first
interrupt itself, crash occurs in the second error interrupts.
Disable the global interrupt before we start processing
the interrupt to avoid the crash.
Disable System interrupt in isr to avoid the crash below.
Unable to handle kernel NULL pointer dereference at virtual address 000000c8
pgd = ffffffc0007db000
[000000c8] *pgd=00000000fb006003, *pud=00000000fb006003, *pmd=00000000fb007003, *pte=0060000011001707
Internal error: Oops: 96000007 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.18.0-next-20141210+ #22
Hardware name: Samsung Exynos7 Espresso board based on EXYNOS7 (DT)
task: ffffffc00075e5c0 ti: ffffffc00074c000 task.ti: ffffffc00074c000
PC is at exynos4_jpeg_irq+0x30/0x15c
LR is at exynos4_jpeg_irq+0x2c/0x15c
pc : [<ffffffc00040873c>] lr : [<ffffffc000408738>] pstate: 800001c5
sp : ffffffc00074fc60
x29: ffffffc00074fc60 x28: 0000004040000000
x27: ffffffc000673928 x26: ffffffc000673940
x25: ffffffc0007a030c x24: ffffffc0bb20a400
x23: 0000000000000030 x22: ffffffc0ba56ba40
x21: 0000000000000000 x20: 0000000000000000
x19: ffffffc0ba56ba18 x18: 0000000000000000
x17: 0000000000000000 x16: ffffffc00018b508
x15: 0000000000000000 x14: 0000000000000000
x13: 0098968000000000 x12: 0000000000989680
x11: 0000000000000004 x10: 0101010101010101
x9 : 00000020a285a9ea x8 : ffffffc0007af880
x7 : ffffffc0bac001a8 x6 : ffffffc0bac00000
x5 : 00000000fffffffa x4 : ffffffc00040870c
x3 : 0000000000000003 x2 : 0000000000010003
x1 : 0000000000010002 x0 : 0000000000000000
Process swapper/0 (pid: 0, stack limit = 0xffffffc00074c058)
Stack: (0xffffffc00074fc60 to 0xffffffc000750000)
fc60: 0074fca0 ffffffc0 000e4508 ffffffc0 bb225300 ffffffc0 bb20a494 ffffffc0
fc80: 00000000 00000000 00000000 00000000 00000030 00000000 000f8c6c ffffffc0
fca0: 0074fd00 ffffffc0 000e4644 ffffffc0 bb20a400 ffffffc0 bb20a494 ffffffc0
fcc0: 00776a00 ffffffc0 00670da8 ffffffc0 00000000 00000000 00000001 00000000
fce0: bb008000 ffffffc0 407db000 00000000 00081230 ffffffc0 000e4638 ffffffc0
fd00: 0074fd40 ffffffc0 000e7338 ffffffc0 bb20a400 ffffffc0 bb20a494 ffffffc0
fd20: 00776a00 ffffffc0 000e7280 ffffffc0 bb225300 ffffffc0 000e72e0 ffffffc0
fd40: 0074fd70 ffffffc0 000e3d60 ffffffc0 00000030 00000000 00743000 ffffffc0
fd60: 0066e000 ffffffc0 006c2000 ffffffc0 0074fd90 ffffffc0 000e3e90 ffffffc0
fd80: 007437c8 ffffffc0 000e3e6c ffffffc0 0074fdf0 ffffffc0 00082404 ffffffc0
fda0: 0074fe20 ffffffc0 0075a000 ffffffc0 0000200c ffffff80 00002010 ffffff80
fdc0: 60000145 00000000 00672cc8 ffffffc0 407d9000 00000000 befb9b40 ffffffc0
fde0: 0074fe20 ffffffc0 000001d2 00000000 0074ff40 ffffffc0
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| arch | ||
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| README | ||
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.