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Sumit Garg bc40ded92a tee: optee: Fix kernel panic caused by incorrect error handling 
commit 95915ba4b9 upstream.

The error path while failing to register devices on the TEE bus has a
bug leading to kernel panic as follows:

[   15.398930] Unable to handle kernel paging request at virtual address ffff07ed00626d7c
[   15.406913] Mem abort info:
[   15.409722]   ESR = 0x0000000096000005
[   15.413490]   EC = 0x25: DABT (current EL), IL = 32 bits
[   15.418814]   SET = 0, FnV = 0
[   15.421878]   EA = 0, S1PTW = 0
[   15.425031]   FSC = 0x05: level 1 translation fault
[   15.429922] Data abort info:
[   15.432813]   ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000
[   15.438310]   CM = 0, WnR = 0, TnD = 0, TagAccess = 0
[   15.443372]   GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
[   15.448697] swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000000d9e3e000
[   15.455413] [ffff07ed00626d7c] pgd=1800000bffdf9003, p4d=1800000bffdf9003, pud=0000000000000000
[   15.464146] Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP

Commit 7269cba53d ("tee: optee: Fix supplicant based device enumeration")
lead to the introduction of this bug. So fix it appropriately.

Reported-by: Mikko Rapeli <mikko.rapeli@linaro.org>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218542
Fixes: 7269cba53d ("tee: optee: Fix supplicant based device enumeration")
Cc: stable@vger.kernel.org
Signed-off-by: Sumit Garg <sumit.garg@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-04-13 12:58:53 +02:00
arch KVM: SVM: Flush pages under kvm->lock to fix UAF in svm_register_enc_region() 2024-04-13 12:58:49 +02:00
block block: Clear zone limits for a non-zoned stacked queue 2024-04-13 12:58:07 +02:00
certs certs/blacklist_hashes.c: fix const confusion in certs blacklist 2022-06-22 14:13:17 +02:00
crypto crypto: api - Disallow identical driver names 2024-02-23 08:41:52 +01:00
Documentation block: introduce zone_write_granularity limit 2024-04-13 12:58:07 +02:00
drivers tee: optee: Fix kernel panic caused by incorrect error handling 2024-04-13 12:58:53 +02:00
fs fs/aio: Check IOCB_AIO_RW before the struct aio_kiocb conversion 2024-04-13 12:58:53 +02:00
include Drivers: hv: vmbus: Calculate ring buffer size for more efficient use of memory 2024-04-13 12:58:48 +02:00
init rootfs: Fix support for rootfstype= when root= is given 2024-01-25 14:37:52 -08:00
io_uring io_uring: don't save/restore iowait state 2024-03-26 18:22:02 -04:00
ipc ipc/sem: Fix dangling sem_array access in semtimedop race 2022-12-08 11:24:00 +01:00
kernel ring-buffer: Fix full_waiters_pending in poll 2024-04-13 12:58:34 +02:00
lib net: blackhole_dev: fix build warning for ethh set but not used 2024-03-26 18:21:50 -04:00
LICENSES LICENSES/deprecated: add Zlib license text 2020-09-16 14:33:49 +02:00
mm memtest: use {READ,WRITE}_ONCE in memory scanning 2024-04-13 12:58:39 +02:00
net xfrm: Avoid clang fortify warning in copy_to_user_tmpl() 2024-04-13 12:58:49 +02:00
samples samples/hw_breakpoint: fix building without module unloading 2023-09-23 11:01:09 +02:00
scripts scripts: kernel-doc: Fix syntax error due to undeclared args variable 2024-04-13 12:58:46 +02:00
security smack: Handle SMACK64TRANSMUTE in smack_inode_setsecurity() 2024-04-13 12:58:00 +02:00
sound ALSA: hda/realtek - Fix headset Mic no show at resume back for Lenovo ALC897 platform 2024-04-13 12:58:49 +02:00
tools selftests/mqueue: Set timeout to 180 seconds 2024-04-13 12:58:06 +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: Always flush async #PF workqueue when vCPU is being destroyed 2024-04-13 12:58:04 +02:00
.clang-format RDMA 5.10 pull request 2020-10-17 11:18:18 -07:00
.cocciconfig
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.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 Remove DECnet support from kernel 2023-06-21 15:45:38 +02:00
Makefile Linux 5.10.214 2024-03-26 18:23:07 -04:00
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.