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Laurentiu Tudor 8bdd5c21ec bus: fsl-mc: don't assume child devices are all fsl-mc devices [ Upstream commit `303c9c63ab` ] Changes in VFIO caused a pseudo-device to be created as child of fsl-mc devices causing a crash [1] when trying to bind a fsl-mc device to VFIO. Fix this by checking the device type when enumerating fsl-mc child devices. [1] Modules linked in: Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP CPU: 6 PID: 1289 Comm: sh Not tainted 6.2.0-rc5-00047-g7c46948a6e9c #2 Hardware name: NXP Layerscape LX2160ARDB (DT) pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : mc_send_command+0x24/0x1f0 lr : dprc_get_obj_region+0xfc/0x1c0 sp : ffff80000a88b900 x29: ffff80000a88b900 x28: ffff48a9429e1400 x27: 00000000000002b2 x26: ffff48a9429e1718 x25: 0000000000000000 x24: 0000000000000000 x23: ffffd59331ba3918 x22: ffffd59331ba3000 x21: 0000000000000000 x20: ffff80000a88b9b8 x19: 0000000000000000 x18: 0000000000000001 x17: 7270642f636d2d6c x16: 73662e3030303030 x15: ffffffffffffffff x14: ffffd59330f1d668 x13: ffff48a8727dc389 x12: ffff48a8727dc386 x11: 0000000000000002 x10: 00008ceaf02f35d4 x9 : 0000000000000012 x8 : 0000000000000000 x7 : 0000000000000006 x6 : ffff80000a88bab0 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff80000a88b9e8 x2 : ffff80000a88b9e8 x1 : 0000000000000000 x0 : ffff48a945142b80 Call trace: mc_send_command+0x24/0x1f0 dprc_get_obj_region+0xfc/0x1c0 fsl_mc_device_add+0x340/0x590 fsl_mc_obj_device_add+0xd0/0xf8 dprc_scan_objects+0x1c4/0x340 dprc_scan_container+0x38/0x60 vfio_fsl_mc_probe+0x9c/0xf8 fsl_mc_driver_probe+0x24/0x70 really_probe+0xbc/0x2a8 __driver_probe_device+0x78/0xe0 device_driver_attach+0x30/0x68 bind_store+0xa8/0x130 drv_attr_store+0x24/0x38 sysfs_kf_write+0x44/0x60 kernfs_fop_write_iter+0x128/0x1b8 vfs_write+0x334/0x448 ksys_write+0x68/0xf0 __arm64_sys_write+0x1c/0x28 invoke_syscall+0x44/0x108 el0_svc_common.constprop.1+0x94/0xf8 do_el0_svc+0x38/0xb0 el0_svc+0x20/0x50 el0t_64_sync_handler+0x98/0xc0 el0t_64_sync+0x174/0x178 Code: aa0103f4 a9025bf5 d5384100 b9400801 (79401260) ---[ end trace 0000000000000000 ]--- Fixes: `3c28a76124` ("vfio: Add struct device to vfio_device") Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Tested-by: Ioana Ciornei <ioana.ciornei@nxp.com> Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com> Message-ID: <20230613160718.29500-1-laurentiu.tudor@nxp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		History 2023-07-19 16:36:38 +02:00
arch	KVM: s390: fix KVM_S390_GET_CMMA_BITS for GFNs in memslot holes	2023-07-19 16:36:35 +02:00
block	block: increment diskseq on all media change events	2023-07-19 16:36:22 +02:00
certs	KEYS: Add missing function documentation	2023-04-24 16:15:52 +03:00
crypto	crypto: jitter - correct health test during initialization	2023-07-19 16:36:19 +02:00
Documentation	f2fs: support errors=remount-ro\|continue\|panic mountoption	2023-07-19 16:36:35 +02:00
drivers	bus: fsl-mc: don't assume child devices are all fsl-mc devices	2023-07-19 16:36:38 +02:00
fs	f2fs: flush error flags in workqueue	2023-07-19 16:36:35 +02:00
include	Revert "usb: common: usb-conn-gpio: Set last role to unknown before initial detection"	2023-07-19 16:36:36 +02:00
init	kbuild: Fix CFI failures with GCOV	2023-07-19 16:36:23 +02:00
io_uring	io_uring/net: use the correct msghdr union member in io_sendmsg_copy_hdr	2023-06-21 07:34:17 -06:00
ipc	Merge branch 'work.namespace' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2023-02-24 19:20:07 -08:00
kernel	kcsan: Don't expect 64 bits atomic builtins from 32 bits architectures	2023-07-19 16:36:13 +02:00
lib	test_firmware: return ENOMEM instead of ENOSPC on failed memory allocation	2023-07-19 16:36:37 +02:00
LICENSES	LICENSES: Add the copyleft-next-0.3.1 license	2022-11-08 15:44:01 +01:00
mm	splice: Fix filemap_splice_read() to use the correct inode	2023-07-19 16:35:07 +02:00
net	SUNRPC: Fix UAF in svc_tcp_listen_data_ready()	2023-07-19 16:36:22 +02:00
rust	Rust changes for v6.4	2023-04-30 11:20:22 -07:00
samples	samples/bpf: xdp1 and xdp2 reduce XDPBUFSIZE to 60	2023-07-19 16:35:25 +02:00
scripts	kbuild: deb-pkg: remove the CONFIG_MODULES check in buildeb	2023-07-19 16:36:24 +02:00
security	apparmor: fix: kzalloc perms tables for shared dfas	2023-07-19 16:36:21 +02:00
sound	ALSA: pcm: Fix potential data race at PCM memory allocation helpers	2023-07-19 16:36:21 +02:00
tools	rtla/hwnoise: Reduce runtime to 75%	2023-07-19 16:36:36 +02:00
usr	initramfs: Check negative timestamp to prevent broken cpio archive	2023-04-16 17:37:01 +09:00
virt	KVM: Avoid illegal stage2 mapping on invalid memory slot	2023-06-22 15:14:57 -04:00
.clang-format	cxl for v6.4	2023-04-30 11:51:51 -07:00
.cocciconfig	scripts: add Linux .cocciconfig for coccinelle	2016-07-22 12:13:39 +02:00
.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 *.dtso files	2023-02-26 15:28:23 +09:00
.gitignore	linux-kselftest-kunit-6.4-rc1	2023-04-24 12:31:32 -07:00
.mailmap	mailmap: add entries for Ben Dooks	2023-06-19 13:19:35 -07:00
.rustfmt.toml	rust: add `.rustfmt.toml`	2022-09-28 09:02:20 +02:00
COPYING	COPYING: state that all contributions really are covered by this file	2020-02-10 13:32:20 -08:00
CREDITS	MAINTAINERS: sctp: move Neil to CREDITS	2023-05-12 08:51:32 +01:00
Kbuild	Kbuild updates for v6.1	2022-10-10 12:00:45 -07:00
Kconfig	kbuild: ensure full rebuild when the compiler is updated	2020-05-12 13:28:33 +09:00
MAINTAINERS	Networking fixes for 6.4-rc8, including fixes from ipsec, bpf,	2023-06-22 17:59:51 -07:00
Makefile	Linux 6.4.3	2023-07-11 06:31:05 +02:00
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.