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| Filename | Latest commit message | Latest commit date |
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1f03757257
fi->f is set in f_midi's alloc_func, need to clean this to NULL in free_func, otherwise on ConfigFS's function switch, midi->usb_function it self is freed, fi->f will be a wild pointer and run into below kernel panic: --------------- [ 58.950628] Unable to handle kernel paging request at virtual address 63697664 [ 58.957869] pgd = c0004000 [ 58.960583] [63697664] *pgd=00000000 [ 58.964185] Internal error: Oops: 80000005 [#1] PREEMPT SMP ARM [ 58.970111] Modules linked in: [ 58.973191] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.1.15-03504-g34c857c-dirty #89 [ 58.981024] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree) [ 58.987557] task: c110bd70 ti: c1100000 task.ti: c1100000 [ 58.992962] PC is at 0x63697664 [ 58.996120] LR is at android_setup+0x78/0x138 <..snip..> [ 60.044980] 1fc0: ffffffff ffffffff c1000684 00000000 00000000 c108ecd0 c11f7294 c11039c0 [ 60.053181] 1fe0: c108eccc c110d148 1000406a 412fc09a 00000000 1000807c 00000000 00000000 [ 60.061420] [<c073b1fc>] (android_setup) from [<c0730490>] (udc_irq+0x758/0x1034) [ 60.068951] [<c0730490>] (udc_irq) from [<c017c650>] (handle_irq_event_percpu+0x50/0x254) [ 60.077165] [<c017c650>] (handle_irq_event_percpu) from [<c017c890>] (handle_irq_event+0x3c/0x5c) [ 60.086072] [<c017c890>] (handle_irq_event) from [<c017f3ec>] (handle_fasteoi_irq+0xe0/0x198) [ 60.094630] [<c017f3ec>] (handle_fasteoi_irq) from [<c017bcfc>] (generic_handle_irq+0x2c/0x3c) [ 60.103271] [<c017bcfc>] (generic_handle_irq) from [<c017bfb8>] (__handle_domain_irq+0x7c/0xec) [ 60.112000] [<c017bfb8>] (__handle_domain_irq) from [<c0101450>] (gic_handle_irq+0x24/0x5c) -------------- Bug: 111003288 Bug: 120441124 Change-Id: Iaf7cc809379c184048a2d9ab1f59e71ebaa3416e Signed-off-by: Winter Wang <wente.wang@nxp.com> |
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| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
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.