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Chao Yu 336936f72a f2fs: fix to do sanity check on segment type in build_sit_entries() 
[ Upstream commit 09beadf289 ]

As Wenqing Liu <wenqingliu0120@gmail.com> reported in bugzilla:

https://bugzilla.kernel.org/show_bug.cgi?id=216285

RIP: 0010:memcpy_erms+0x6/0x10
 f2fs_update_meta_page+0x84/0x570 [f2fs]
 change_curseg.constprop.0+0x159/0xbd0 [f2fs]
 f2fs_do_replace_block+0x5c7/0x18a0 [f2fs]
 f2fs_replace_block+0xeb/0x180 [f2fs]
 recover_data+0x1abd/0x6f50 [f2fs]
 f2fs_recover_fsync_data+0x12ce/0x3250 [f2fs]
 f2fs_fill_super+0x4459/0x6190 [f2fs]
 mount_bdev+0x2cf/0x3b0
 legacy_get_tree+0xed/0x1d0
 vfs_get_tree+0x81/0x2b0
 path_mount+0x47e/0x19d0
 do_mount+0xce/0xf0
 __x64_sys_mount+0x12c/0x1a0
 do_syscall_64+0x38/0x90
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

The root cause is segment type is invalid, so in f2fs_do_replace_block(),
f2fs accesses f2fs_sm_info::curseg_array with out-of-range segment type,
result in accessing invalid curseg->sum_blk during memcpy in
f2fs_update_meta_page(). Fix this by adding sanity check on segment type
in build_sit_entries().

Reported-by: Wenqing Liu <wenqingliu0120@gmail.com>
Signed-off-by: Chao Yu <chao.yu@oppo.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-08-25 11:38:21 +02:00
arch powerpc/32: Don't always pass -mcpu=powerpc to the compiler 2022-08-25 11:38:20 +02:00
block block: remove the request_queue to argument request based tracepoints 2022-08-21 15:15:36 +02:00
certs certs/blacklist_hashes.c: fix const confusion in certs blacklist 2022-06-22 14:13:17 +02:00
crypto KEYS: asymmetric: enforce SM2 signature use pkey algo 2022-08-21 15:16:22 +02:00
Documentation locking/atomic: Make test_and_*_bit() ordered on failure 2022-08-25 11:38:10 +02:00
drivers vfio: Clear the caps->buf to NULL after free 2022-08-25 11:38:18 +02:00
fs f2fs: fix to do sanity check on segment type in build_sit_entries() 2022-08-25 11:38:21 +02:00
include ALSA: control: Use deferred fasync helper 2022-08-25 11:38:21 +02:00
init Kconfig: Add option for asm goto w/ tied outputs to workaround clang-13 bug 2022-06-09 10:21:25 +02:00
ipc ipc/mqueue: use get_tree_nodev() in mqueue_get_tree() 2022-06-09 10:21:17 +02:00
kernel watchdog: export lockup_detector_reconfigure 2022-08-25 11:38:20 +02:00
lib lib/list_debug.c: Detect uninitialized lists 2022-08-25 11:38:18 +02:00
LICENSES LICENSES/deprecated: add Zlib license text 2020-09-16 14:33:49 +02:00
mm mm/mmap.c: fix missing call to vm_unacct_memory in mmap_region 2022-08-21 15:16:02 +02:00
net netfilter: add helper function to set up the nfnetlink header and use it 2022-08-25 11:38:11 +02:00
samples x86: Prepare inline-asm for straight-line-speculation 2022-07-25 11:26:29 +02:00
scripts modules: Ensure natural alignment for .altinstructions and __bug_table sections 2022-08-25 11:38:19 +02:00
security apparmor: Fix memleak in aa_simple_write_to_buffer() 2022-08-25 11:37:53 +02:00
sound ALSA: control: Use deferred fasync helper 2022-08-25 11:38:21 +02:00
tools selftests/kprobe: Do not test for GRP/ without event failures 2022-08-25 11:38:16 +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: Add infrastructure and macro to mark VM as bugged 2022-08-21 15:16:24 +02:00
.clang-format RDMA 5.10 pull request 2020-10-17 11:18:18 -07:00
.cocciconfig
.get_maintainer.ignore
.gitattributes
.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
CREDITS MAINTAINERS: Move Jason Cooper to CREDITS 2020-11-30 10:20:34 +01:00
Kbuild
Kconfig
MAINTAINERS MAINTAINERS: add Amir as xfs maintainer for 5.10.y 2022-07-02 16:39:22 +02:00
Makefile kbuild: fix the modules order between drivers and libs 2022-08-25 11:38:09 +02:00
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.

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.