linux-next

mirror of https://github.com/edk2-porting/linux-next.git synced 2025-01-19 11:04:00 +08:00

Mainline Linux tree for various devices, only for fun :)

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Lad Prabhakar 597f500fde thermal/core: Add a check before calling set_trip_temp() The thermal driver [0] for Renesas RZ/G2L SoC does not implement set_trip_temp() callback but has trips commit `9326167058` ("thermal/core: Move set_trip_temp ops to the sysfs code") changed the behaviour which causes the below panic when trying to set the trip temperature: root@smarc-rzg2l:~# echo 51000 > /sys/class/thermal/thermal_zone0/trip_point_0_temp [ 92.461521] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 [ 92.470958] Mem abort info: [ 92.474311] ESR = 0x0000000086000004 [ 92.478546] EC = 0x21: IABT (current EL), IL = 32 bits [ 92.484290] SET = 0, FnV = 0 [ 92.487693] EA = 0, S1PTW = 0 [ 92.491153] FSC = 0x04: level 0 translation fault [ 92.496461] user pgtable: 4k pages, 48-bit VAs, pgdp=000000004e885000 [ 92.503736] [0000000000000000] pgd=0000000000000000, p4d=0000000000000000 [ 92.510869] Internal error: Oops: 86000004 [#3] PREEMPT SMP [ 92.516556] CPU: 0 PID: 290 Comm: sh Tainted: G D 6.0.0-rc4-next-20220906-arm64-renesas-00124-g84633c87c5f6-dirty #509 [ 92.528814] Hardware name: Renesas SMARC EVK based on r9a07g044l2 (DT) [ 92.535441] pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 92.542516] pc : 0x0 [ 92.544764] lr : trip_point_temp_store+0x84/0x140 [ 92.549582] sp : ffff80000a92bc10 [ 92.552961] x29: ffff80000a92bc10 x28: ffff00000d8a45c0 x27: 0000000000000000 [ 92.560249] x26: 0000000000000000 x25: ffff8000082b53e8 x24: ffff00000eaffc20 [ 92.567532] x23: ffff80000a92bd68 x22: ffff00000d3e0f80 x21: 0000000000000006 [ 92.574814] x20: ffff800009149000 x19: ffff00000b8ab000 x18: 0000000000000000 [ 92.582097] x17: 0000000000000000 x16: 0000000000000000 x15: 0000aaab028cdee0 [ 92.589378] x14: 0000000000000000 x13: 0000000000000000 x12: ffff80000a92bbd0 [ 92.596659] x11: ffff00000d3e0f80 x10: ffff800009149eb8 x9 : 000000000000000a [ 92.603940] x8 : 00000000ffffffc9 x7 : 0000000000000005 x6 : 000000000000002a [ 92.611220] x5 : 000000000000c738 x4 : 00000000ffffffd3 x3 : 0000000000000000 [ 92.618500] x2 : 000000000000c738 x1 : 0000000000000000 x0 : ffff00000b8ab000 [ 92.625781] Call trace: [ 92.628282] 0x0 [ 92.630176] dev_attr_store+0x14/0x28 [ 92.633935] sysfs_kf_write+0x4c/0x70 [ 92.637681] kernfs_fop_write_iter+0x160/0x1e0 [ 92.642213] vfs_write+0x474/0x540 [ 92.645703] ksys_write+0x68/0xf8 [ 92.649100] __arm64_sys_write+0x18/0x20 [ 92.653111] invoke_syscall+0x40/0xf8 [ 92.656866] el0_svc_common.constprop.3+0x88/0x110 [ 92.661758] do_el0_svc+0x20/0x78 [ 92.665158] el0_svc+0x3c/0x90 [ 92.668291] el0t_64_sync_handler+0x90/0xb8 [ 92.672563] el0t_64_sync+0x148/0x14c [ 92.676322] Code: bad PC value [ 92.679453] ---[ end trace 0000000000000000 ]--- /bin/start_getty: line 40: 290 Segmentation fault ${setsid:-} ${getty} -L $1 $2 $3 Poky (Yocto Project Reference Distro) 3.2.1 smarc-rzg2l ttySC0 smarc-rzg2l login: This patch fixes the above issue by adding a check to see if set_trip_temp() callback is implemented before calling it. [0] drivers/thermal/rzg2l_thermal.c Fixes: `9326167058` ("thermal/core: Move set_trip_temp ops to the sysfs code") Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Link: https://lore.kernel.org/r/20220908174610.7837-1-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>		2022-10-04 11:21:36 +02:00
arch	Misc fixes:	2022-08-28 10:10:23 -07:00
block	block-6.0-2022-08-26	2022-08-26 11:05:54 -07:00
certs	Kbuild updates for v5.20	2022-08-10 10:40:41 -07:00
crypto	crypto: blake2b: effectively disable frame size warning	2022-08-10 17:59:11 -07:00
Documentation	Misc fixes:	2022-08-28 10:10:23 -07:00
drivers	thermal/core: Add a check before calling set_trip_temp()	2022-10-04 11:21:36 +02:00
fs	Seventeen hotfixes. Mostly memory management things. Ten patches are	2022-08-28 14:49:59 -07:00
include	thermal/of: Remove the thermal_zone_of_get_sensor_id() function	2022-10-04 11:21:06 +02:00
init	arm64 fixes for -rc3	2022-08-26 11:32:53 -07:00
io_uring	io_uring/net: save address for sendzc async execution	2022-08-25 07:52:30 -06:00
ipc	Updates to various subsystems which I help look after. lib, ocfs2,	2022-08-07 10:03:24 -07:00
kernel	Seventeen hotfixes. Mostly memory management things. Ten patches are	2022-08-28 14:49:59 -07:00
lib	bitmap fixes for v6.0-rc3	2022-08-28 14:36:27 -07:00
LICENSES	LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers	2021-12-16 14:33:10 +01:00
mm	mm/mprotect: only reference swap pfn page if type match	2022-08-28 14:02:46 -07:00
net	Including fixes from ipsec and netfilter (with one broken Fixes tag).	2022-08-25 14:03:58 -07:00
samples	Tracing updates for 5.20 / 6.0	2022-08-05 09:41:12 -07:00
scripts	asm goto: eradicate CC_HAS_ASM_GOTO	2022-08-21 10:06:28 -07:00
security	hardening fixes for v6.0-rc2	2022-08-19 13:56:14 -07:00
sound	sound fixes for 6.0-rc2	2022-08-19 09:46:11 -07:00
tools	Misc fixes:	2022-08-28 10:10:23 -07:00
usr	Not a lot of material this cycle. Many singleton patches against various	2022-05-27 11:22:03 -07:00
virt	KVM: Drop unnecessary initialization of "ops" in kvm_ioctl_create_device()	2022-08-19 04:05:43 -04:00
.clang-format	PCI/DOE: Add DOE mailbox support functions	2022-07-19 15:38:04 -07:00
.cocciconfig
.get_maintainer.ignore	get_maintainer: add Alan to .get_maintainer.ignore	2022-08-20 15:17:44 -07:00
.gitattributes	.gitattributes: use 'dts' diff driver for dts files	2019-12-04 19:44:11 -08:00
.gitignore	kbuild: split the second line of .mod into .usyms	2022-05-08 03:16:59 +09:00
.mailmap	.mailmap: update Luca Ceresoli's e-mail address	2022-08-28 14:02:46 -07:00
COPYING	COPYING: state that all contributions really are covered by this file	2020-02-10 13:32:20 -08:00
CREDITS	drm for 5.20/6.0	2022-08-03 19:52:08 -07:00
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	bitmap fixes for v6.0-rc3	2022-08-28 14:36:27 -07:00
Makefile	Linux 6.0-rc3	2022-08-28 15:05:29 -07:00
README	Drop all 00-INDEX files from Documentation/	2018-09-09 15:08:58 -06:00

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.