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Tony Lindgren bd905fed87 iommu/omap: Fix regression in probe for NULL pointer dereference 
[ Upstream commit 71ff461c3f41f6465434b9e980c01782763e7ad8 ]

Commit 3f6634d997db ("iommu: Use right way to retrieve iommu_ops") started
triggering a NULL pointer dereference for some omap variants:

__iommu_probe_device from probe_iommu_group+0x2c/0x38
probe_iommu_group from bus_for_each_dev+0x74/0xbc
bus_for_each_dev from bus_iommu_probe+0x34/0x2e8
bus_iommu_probe from bus_set_iommu+0x80/0xc8
bus_set_iommu from omap_iommu_init+0x88/0xcc
omap_iommu_init from do_one_initcall+0x44/0x24

This is caused by omap iommu probe returning 0 instead of ERR_PTR(-ENODEV)
as noted by Jason Gunthorpe <jgg@ziepe.ca>.

Looks like the regression already happened with an earlier commit
6785eb9105 ("iommu/omap: Convert to probe/release_device() call-backs")
that changed the function return type and missed converting one place.

Cc: Drew Fustini <dfustini@baylibre.com>
Cc: Lu Baolu <baolu.lu@linux.intel.com>
Cc: Suman Anna <s-anna@ti.com>
Suggested-by: Jason Gunthorpe <jgg@ziepe.ca>
Fixes: 6785eb9105 ("iommu/omap: Convert to probe/release_device() call-backs")
Fixes: 3f6634d997db ("iommu: Use right way to retrieve iommu_ops")
Signed-off-by: Tony Lindgren <tony@atomide.com>
Tested-by: Drew Fustini <dfustini@baylibre.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20220331062301.24269-1-tony@atomide.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-04-13 21:01:07 +02:00
arch parisc: Fix patch code locking and flushing 2022-04-13 21:01:03 +02:00
block Revert "Revert "block, bfq: honor already-setup queue merges"" 2022-04-08 14:40:32 +02:00
certs certs: Trigger creation of RSA module signing key if it's not an RSA key 2021-09-15 09:50:29 +02:00
crypto crypto: authenc - Fix sleep in atomic context in decrypt_tail 2022-04-08 14:39:59 +02:00
Documentation docs: sysctl/kernel: add missing bit to panic_print 2022-04-08 14:40:44 +02:00
drivers iommu/omap: Fix regression in probe for NULL pointer dereference 2022-04-13 21:01:07 +02:00
fs io_uring: don't touch scm_fp_list after queueing skb 2022-04-13 21:01:06 +02:00
include NFS: nfsiod should not block forever in mempool_alloc() 2022-04-13 21:01:03 +02:00
init init/main.c: return 1 from handled __setup() functions 2022-04-13 21:01:01 +02:00
ipc shm: extend forced shm destroy to support objects from several IPC nses 2021-12-01 09:19:10 +01:00
kernel bpf: Adjust BPF stack helper functions to accommodate skip > 0 2022-04-08 14:40:43 +02:00
lib XArray: Update the LRU list in xas_split() 2022-04-08 14:40:40 +02:00
LICENSES
mm mm: fix race between MADV_FREE reclaim and blkdev direct IO read 2022-04-13 21:01:03 +02:00
net SUNRPC: svc_tcp_sendmsg() should handle errors from xdr_alloc_bvec() 2022-04-13 21:01:07 +02:00
samples samples/bpf, xdpsock: Fix race when running for fix duration of time 2022-04-08 14:40:21 +02:00
scripts gcc-plugins/stackleak: Exactly match strings instead of prefixes 2022-04-08 14:40:30 +02:00
security Fix incorrect type in assignment of ipv6 port for audit 2022-04-08 14:40:31 +02:00
sound ASoC: topology: Allow TLV control to be either read or write 2022-04-08 14:40:44 +02:00
tools libbpf: Fix build issue with llvm-readelf 2022-04-13 21:00:56 +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: Prevent module exit until all VMs are freed 2022-04-08 14:40:38 +02:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS MAINTAINERS: adjust GCC PLUGINS after gcc-plugin.sh removal 2021-12-14 11:32:46 +01:00
Makefile Linux 5.10.110 2022-04-08 14:40:45 +02:00
README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
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In order to build the documentation, use ``make htmldocs`` or
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    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.