linux

mirror of https://github.com/torvalds/linux.git synced 2026-06-07 05:55:44 +02:00

Linux kernel source tree

Go to file

Piyush Mehta f457bb2198 usb: gadget: udc-xilinx: replace memcpy with memcpy_toio [ Upstream commit `8cb339f1c1` ] For ARM processor, unaligned access to device memory is not allowed. Method memcpy does not take care of alignment. USB detection failure with the unaligned address of memory access, with below kernel crash. To fix the unaligned address the kernel panic issue, replace memcpy with memcpy_toio method. Kernel crash: Unable to handle kernel paging request at virtual address ffff80000c05008a Mem abort info: ESR = 0x96000061 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x21: alignment fault Data abort info: ISV = 0, ISS = 0x00000061 CM = 0, WnR = 1 swapper pgtable: 4k pages, 48-bit VAs, pgdp=000000000143b000 [ffff80000c05008a] pgd=100000087ffff003, p4d=100000087ffff003, pud=100000087fffe003, pmd=1000000800bcc003, pte=00680000a0010713 Internal error: Oops: 96000061 [#1] SMP Modules linked in: CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.15.19-xilinx-v2022.1 #1 Hardware name: ZynqMP ZCU102 Rev1.0 (DT) pstate: 200000c5 (nzCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __memcpy+0x30/0x260 lr : __xudc_ep0_queue+0xf0/0x110 sp : ffff800008003d00 x29: ffff800008003d00 x28: ffff800009474e80 x27: 00000000000000a0 x26: 0000000000000100 x25: 0000000000000012 x24: ffff000800bc8080 x23: 0000000000000001 x22: 0000000000000012 x21: ffff000800bc8080 x20: 0000000000000012 x19: ffff000800bc8080 x18: 0000000000000000 x17: ffff800876482000 x16: ffff800008004000 x15: 0000000000004000 x14: 00001f09785d0400 x13: 0103020101005567 x12: 0781400000000200 x11: 00000000c5672a10 x10: 00000000000008d0 x9 : ffff800009463cf0 x8 : ffff8000094757b0 x7 : 0201010055670781 x6 : 4000000002000112 x5 : ffff80000c05009a x4 : ffff000800a15012 x3 : ffff00080362ad80 x2 : 0000000000000012 x1 : ffff000800a15000 x0 : ffff80000c050088 Call trace: __memcpy+0x30/0x260 xudc_ep0_queue+0x3c/0x60 usb_ep_queue+0x38/0x44 composite_ep0_queue.constprop.0+0x2c/0xc0 composite_setup+0x8d0/0x185c configfs_composite_setup+0x74/0xb0 xudc_irq+0x570/0xa40 __handle_irq_event_percpu+0x58/0x170 handle_irq_event+0x60/0x120 handle_fasteoi_irq+0xc0/0x220 handle_domain_irq+0x60/0x90 gic_handle_irq+0x74/0xa0 call_on_irq_stack+0x2c/0x60 do_interrupt_handler+0x54/0x60 el1_interrupt+0x30/0x50 el1h_64_irq_handler+0x18/0x24 el1h_64_irq+0x78/0x7c arch_cpu_idle+0x18/0x2c do_idle+0xdc/0x15c cpu_startup_entry+0x28/0x60 rest_init+0xc8/0xe0 arch_call_rest_init+0x10/0x1c start_kernel+0x694/0x6d4 __primary_switched+0xa4/0xac Fixes: `1f7c516600` ("usb: gadget: Add xilinx usb2 device support") Cc: stable@vger.kernel.org Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Piyush Mehta <piyush.mehta@amd.com> Link: https://lore.kernel.org/r/20220824071253.1261096-1-piyush.mehta@amd.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2022-09-28 11:10:23 +02:00
arch	MIPS: OCTEON: irq: Fix octeon_irq_force_ciu_mapping()	2022-09-23 14:17:00 +02:00
block	blk-mq: fix io hung due to missing commit_rqs	2022-08-31 17:15:24 +02:00
certs	certs/blacklist_hashes.c: fix const confusion in certs blacklist	2022-06-22 14:13:17 +02:00
crypto	KEYS: asymmetric: enforce SM2 signature use pkey algo	2022-08-21 15:16:22 +02:00
Documentation	Input: iforce - add support for Boeder Force Feedback Wheel	2022-09-20 12:38:32 +02:00
drivers	usb: gadget: udc-xilinx: replace memcpy with memcpy_toio	2022-09-28 11:10:23 +02:00
fs	afs: Return -EAGAIN, not -EREMOTEIO, when a file already locked	2022-09-23 14:17:00 +02:00
include	of/device: Fix up of_dma_configure_id() stub	2022-09-23 14:16:58 +02:00
init	Kconfig: Add option for asm goto w/ tied outputs to workaround clang-13 bug	2022-06-09 10:21:25 +02:00
ipc	ipc/mqueue: use get_tree_nodev() in mqueue_get_tree()	2022-06-09 10:21:17 +02:00
kernel	cgroup: Add missing cpus_read_lock() to cgroup_attach_task_all()	2022-09-23 14:17:00 +02:00
lib	lib/vdso: Mark do_hres_timens() and do_coarse_timens() __always_inline()	2022-09-05 10:28:58 +02:00
LICENSES	LICENSES/deprecated: add Zlib license text	2020-09-16 14:33:49 +02:00
mm	mm: Fix TLB flush for not-first PFNMAP mappings in unmap_region()	2022-09-20 12:38:32 +02:00
net	rxrpc: Fix calc of resend age	2022-09-23 14:16:59 +02:00
samples	x86: Prepare inline-asm for straight-line-speculation	2022-07-25 11:26:29 +02:00
scripts	mksysmap: Fix the mismatch of 'L0' symbols in System.map	2022-09-23 14:17:00 +02:00
security	apparmor: Fix memleak in aa_simple_write_to_buffer()	2022-08-25 11:37:53 +02:00
sound	ALSA: hda/sigmatel: Fix unused variable warning for beep power change	2022-09-23 14:17:01 +02:00
tools	tools/include/uapi: Fix <asm/errno.h> for parisc and xtensa	2022-09-23 14:16:58 +02:00
usr	usr/include/Makefile: add linux/nfc.h to the compile-test coverage	2022-02-01 17:25:48 +01:00
virt	KVM: Add infrastructure and macro to mark VM as bugged	2022-08-21 15:16:24 +02:00
.clang-format	RDMA 5.10 pull request	2020-10-17 11:18:18 -07:00
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore	kbuild: generate Module.symvers only when vmlinux exists	2021-05-19 10:12:59 +02:00
.mailmap	mailmap: add two more addresses of Uwe Kleine-König	2020-12-06 10:19:07 -08:00
COPYING	COPYING: state that all contributions really are covered by this file	2020-02-10 13:32:20 -08:00
CREDITS	MAINTAINERS: Move Jason Cooper to CREDITS	2020-11-30 10:20:34 +01:00
Kbuild	kbuild: rename hostprogs-y/always to hostprogs/always-y	2020-02-04 01:53:07 +09:00
Kconfig	kbuild: ensure full rebuild when the compiler is updated	2020-05-12 13:28:33 +09:00
MAINTAINERS	MAINTAINERS: add Amir as xfs maintainer for 5.10.y	2022-07-02 16:39:22 +02:00
Makefile	Linux 5.10.145	2022-09-23 14:17:01 +02:00
README

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.

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.