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Daniel Wagner 9da271c1cd net: usb: lan78xx: Disable interrupts before calling generic_handle_irq() [ Upstream commit `0a29ac5bd3` ] lan78xx_status() will run with interrupts enabled due to the change in `ed194d1367` ("usb: core: remove local_irq_save() around ->complete() handler"). generic_handle_irq() expects to be run with IRQs disabled. [ 4.886203] 000: irq 79 handler irq_default_primary_handler+0x0/0x8 enabled interrupts [ 4.886243] 000: WARNING: CPU: 0 PID: 0 at kernel/irq/handle.c:152 __handle_irq_event_percpu+0x154/0x168 [ 4.896294] 000: Modules linked in: [ 4.896301] 000: CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.3.6 #39 [ 4.896310] 000: Hardware name: Raspberry Pi 3 Model B+ (DT) [ 4.896315] 000: pstate: 60000005 (nZCv daif -PAN -UAO) [ 4.896321] 000: pc : __handle_irq_event_percpu+0x154/0x168 [ 4.896331] 000: lr : __handle_irq_event_percpu+0x154/0x168 [ 4.896339] 000: sp : ffff000010003cc0 [ 4.896346] 000: x29: ffff000010003cc0 x28: 0000000000000060 [ 4.896355] 000: x27: ffff000011021980 x26: ffff00001189c72b [ 4.896364] 000: x25: ffff000011702bc0 x24: ffff800036d6e400 [ 4.896373] 000: x23: 000000000000004f x22: ffff000010003d64 [ 4.896381] 000: x21: 0000000000000000 x20: 0000000000000002 [ 4.896390] 000: x19: ffff8000371c8480 x18: 0000000000000060 [ 4.896398] 000: x17: 0000000000000000 x16: 00000000000000eb [ 4.896406] 000: x15: ffff000011712d18 x14: 7265746e69206465 [ 4.896414] 000: x13: ffff000010003ba0 x12: ffff000011712df0 [ 4.896422] 000: x11: 0000000000000001 x10: ffff000011712e08 [ 4.896430] 000: x9 : 0000000000000001 x8 : 000000000003c920 [ 4.896437] 000: x7 : ffff0000118cc410 x6 : ffff0000118c7f00 [ 4.896445] 000: x5 : 000000000003c920 x4 : 0000000000004510 [ 4.896453] 000: x3 : ffff000011712dc8 x2 : 0000000000000000 [ 4.896461] 000: x1 : 73a3f67df94c1500 x0 : 0000000000000000 [ 4.896466] 000: Call trace: [ 4.896471] 000: __handle_irq_event_percpu+0x154/0x168 [ 4.896481] 000: handle_irq_event_percpu+0x50/0xb0 [ 4.896489] 000: handle_irq_event+0x40/0x98 [ 4.896497] 000: handle_simple_irq+0xa4/0xf0 [ 4.896505] 000: generic_handle_irq+0x24/0x38 [ 4.896513] 000: intr_complete+0xb0/0xe0 [ 4.896525] 000: __usb_hcd_giveback_urb+0x58/0xd8 [ 4.896533] 000: usb_giveback_urb_bh+0xd0/0x170 [ 4.896539] 000: tasklet_action_common.isra.0+0x9c/0x128 [ 4.896549] 000: tasklet_hi_action+0x24/0x30 [ 4.896556] 000: __do_softirq+0x120/0x23c [ 4.896564] 000: irq_exit+0xb8/0xd8 [ 4.896571] 000: __handle_domain_irq+0x64/0xb8 [ 4.896579] 000: bcm2836_arm_irqchip_handle_irq+0x60/0xc0 [ 4.896586] 000: el1_irq+0xb8/0x140 [ 4.896592] 000: arch_cpu_idle+0x10/0x18 [ 4.896601] 000: do_idle+0x200/0x280 [ 4.896608] 000: cpu_startup_entry+0x20/0x28 [ 4.896615] 000: rest_init+0xb4/0xc0 [ 4.896623] 000: arch_call_rest_init+0xc/0x14 [ 4.896632] 000: start_kernel+0x454/0x480 Fixes: `ed194d1367` ("usb: core: remove local_irq_save() around ->complete() handler") Cc: Woojung Huh <woojung.huh@microchip.com> Cc: Marc Zyngier <maz@kernel.org> Cc: Andrew Lunn <andrew@lunn.ch> Cc: Stefan Wahren <wahrenst@gmx.net> Cc: Jisheng Zhang <Jisheng.Zhang@synaptics.com> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: David Miller <davem@davemloft.net> Signed-off-by: Daniel Wagner <dwagner@suse.de> Tested-by: Stefan Wahren <wahrenst@gmx.net> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2019-11-10 11:27:43 +01:00
arch	MIPS: bmips: mark exception vectors as char arrays	2019-11-10 11:27:31 +01:00
block	blk-rq-qos: fix first node deletion of rq_qos_del()	2019-10-29 09:20:09 +01:00
certs	export.h: remove VMLINUX_SYMBOL() and VMLINUX_SYMBOL_STR()	2018-08-22 23:21:44 +09:00
crypto	crypto: skcipher - Unmap pages after an external error	2019-10-11 18:20:52 +02:00
Documentation	x86/xen: Return from panic notifier	2019-11-06 13:05:55 +01:00
drivers	net: usb: lan78xx: Disable interrupts before calling generic_handle_irq()	2019-11-10 11:27:43 +01:00
firmware
fs	cifs: Fix cifsInodeInfo lock_sem deadlock when reconnect occurs	2019-11-10 11:27:34 +01:00
include	netns: fix GFP flags in rtnl_net_notifyid()	2019-11-10 11:27:42 +01:00
init	initramfs: don't free a non-existent initrd	2019-10-01 08:26:09 +02:00
ipc	ipc/mqueue.c: only perform resource calculation if user valid	2019-08-06 19:06:52 +02:00
kernel	tracing: Fix "gfp_t" format for synthetic events	2019-11-10 11:27:28 +01:00
lib	lib: textsearch: fix escapes in example code	2019-10-29 09:19:35 +01:00
LICENSES	LICENSES: Remove CC-BY-SA-4.0 license text	2018-10-18 11:28:50 +02:00
mm	mm/memory-failure: poison read receives SIGKILL instead of SIGBUS if mmaped more than once	2019-10-29 09:19:59 +01:00
net	netns: fix GFP flags in rtnl_net_notifyid()	2019-11-10 11:27:42 +01:00
samples	samples: bpf: fix: seg fault with NULL pointer arg	2019-11-06 13:05:30 +01:00
scripts	scripts/setlocalversion: Improve -dirty check with git-status --no-optional-locks	2019-11-06 13:05:27 +01:00
security	ima: fix freeing ongoing ahash_request	2019-10-11 18:21:11 +02:00
sound	ASoc: rockchip: i2s: Fix RPM imbalance	2019-11-10 11:27:16 +01:00
tools	perf kmem: Fix memory leak in compact_gfp_flags()	2019-11-10 11:27:25 +01:00
usr	kbuild: clean compressed initramfs image	2019-10-07 18:57:16 +02:00
virt	KVM: coalesced_mmio: add bounds checking	2019-09-21 07:16:44 +02:00
.clang-format	clang-format: Set IndentWrappedFunctionNames false	2018-08-01 18:38:51 +02:00
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap	libnvdimm-for-4.19_misc	2018-08-25 18:13:10 -07:00
COPYING
CREDITS	9p: remove Ron Minnich from MAINTAINERS	2018-08-17 16:20:26 -07:00
Kbuild
Kconfig	kconfig: move the "Executable file formats" menu to fs/Kconfig.binfmt	2018-08-02 08:06:55 +09:00
MAINTAINERS	USB: rio500: Remove Rio 500 kernel driver	2019-10-17 13:44:47 -07:00
Makefile	kbuild: add -fcf-protection=none when using retpoline flags	2019-11-10 11:27:09 +01:00
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.
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.