MIRRORS/linux-yocto
1
0
Fork 0
mirror of git://git.yoctoproject.org/linux-yocto.git synced 2025-10-22 23:13:01 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity
1,163,927 Commits 589 Branches 4,509 Tags 4.3 GiB
C 97.5%
Assembly 1%
Shell 0.6%
Python 0.3%
Makefile 0.3%
Other 0.1%
e98dc1909f
Go to file
Chao Yu e98dc1909f f2fs: fix to do sanity check on ino and xnid 
[ Upstream commit 061cf3a84b ]

syzbot reported a f2fs bug as below:

INFO: task syz-executor140:5308 blocked for more than 143 seconds.
      Not tainted 6.14.0-rc7-syzkaller-00069-g81e4f8d68c66 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor140 state:D stack:24016 pid:5308  tgid:5308  ppid:5306   task_flags:0x400140 flags:0x00000006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5378 [inline]
 __schedule+0x190e/0x4c90 kernel/sched/core.c:6765
 __schedule_loop kernel/sched/core.c:6842 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6857
 io_schedule+0x8d/0x110 kernel/sched/core.c:7690
 folio_wait_bit_common+0x839/0xee0 mm/filemap.c:1317
 __folio_lock mm/filemap.c:1664 [inline]
 folio_lock include/linux/pagemap.h:1163 [inline]
 __filemap_get_folio+0x147/0xb40 mm/filemap.c:1917
 pagecache_get_page+0x2c/0x130 mm/folio-compat.c:87
 find_get_page_flags include/linux/pagemap.h:842 [inline]
 f2fs_grab_cache_page+0x2b/0x320 fs/f2fs/f2fs.h:2776
 __get_node_page+0x131/0x11b0 fs/f2fs/node.c:1463
 read_xattr_block+0xfb/0x190 fs/f2fs/xattr.c:306
 lookup_all_xattrs fs/f2fs/xattr.c:355 [inline]
 f2fs_getxattr+0x676/0xf70 fs/f2fs/xattr.c:533
 __f2fs_get_acl+0x52/0x870 fs/f2fs/acl.c:179
 f2fs_acl_create fs/f2fs/acl.c:375 [inline]
 f2fs_init_acl+0xd7/0x9b0 fs/f2fs/acl.c:418
 f2fs_init_inode_metadata+0xa0f/0x1050 fs/f2fs/dir.c:539
 f2fs_add_inline_entry+0x448/0x860 fs/f2fs/inline.c:666
 f2fs_add_dentry+0xba/0x1e0 fs/f2fs/dir.c:765
 f2fs_do_add_link+0x28c/0x3a0 fs/f2fs/dir.c:808
 f2fs_add_link fs/f2fs/f2fs.h:3616 [inline]
 f2fs_mknod+0x2e8/0x5b0 fs/f2fs/namei.c:766
 vfs_mknod+0x36d/0x3b0 fs/namei.c:4191
 unix_bind_bsd net/unix/af_unix.c:1286 [inline]
 unix_bind+0x563/0xe30 net/unix/af_unix.c:1379
 __sys_bind_socket net/socket.c:1817 [inline]
 __sys_bind+0x1e4/0x290 net/socket.c:1848
 __do_sys_bind net/socket.c:1853 [inline]
 __se_sys_bind net/socket.c:1851 [inline]
 __x64_sys_bind+0x7a/0x90 net/socket.c:1851
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Let's dump and check metadata of corrupted inode, it shows its xattr_nid
is the same to its i_ino.

dump.f2fs -i 3 chaseyu.img.raw
i_xattr_nid                             [0x       3 : 3]

So that, during mknod in the corrupted directory, it tries to get and
lock inode page twice, result in deadlock.

- f2fs_mknod
 - f2fs_add_inline_entry
  - f2fs_get_inode_page --- lock dir's inode page
   - f2fs_init_acl
    - f2fs_acl_create(dir,..)
     - __f2fs_get_acl
      - f2fs_getxattr
       - lookup_all_xattrs
        - __get_node_page --- try to lock dir's inode page

In order to fix this, let's add sanity check on ino and xnid.

Cc: stable@vger.kernel.org
Reported-by: syzbot+cc448dcdc7ae0b4e4ffa@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/linux-f2fs-devel/67e06150.050a0220.21942d.0005.GAE@google.com
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
[ add set_sbi_flag(sbi, SBI_NEED_FSCK) to match error handling pattern ]
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-08-28 16:26:09 +02:00
arch parisc: Update comments in make_insert_tlb 2025-08-28 16:26:08 +02:00
block block: avoid possible overflow for chunk_sectors check in blk_stack_limits() 2025-08-28 16:26:02 +02:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2025-04-25 10:44:04 +02:00
crypto crypto: xts - Only add ecb if it is not already there 2025-06-27 11:07:06 +01:00
Documentation dt-bindings: display: sprd,sharkl3-dsi-host: Fix missing clocks constraints 2025-08-28 16:26:06 +02:00
drivers ACPI: pfr_update: Fix the driver update version check 2025-08-28 16:26:09 +02:00
fs f2fs: fix to do sanity check on ino and xnid 2025-08-28 16:26:09 +02:00
include ACPI: pfr_update: Fix the driver update version check 2025-08-28 16:26:09 +02:00
init sched/isolation: Make CONFIG_CPU_ISOLATION depend on CONFIG_SMP 2025-05-02 07:47:04 +02:00
io_uring io_uring/poll: fix POLLERR handling 2025-07-24 08:51:48 +02:00
ipc ipc: fix to protect IPCS lookups using RCU 2025-06-27 11:07:30 +01:00
kernel module: Prevent silent truncation of module name in delete_module(2) 2025-08-28 16:26:01 +02:00
lib maple_tree: fix mt_destroy_walk() on root leaf node 2025-07-17 18:32:09 +02:00
LICENSES LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers 2021-12-16 14:33:10 +01:00
mm mm/kmemleak: avoid deadlock by moving pr_warn() outside kmemleak_lock 2025-08-28 16:26:04 +02:00
net mptcp: pm: kernel: flush: do not reset ADD_ADDR limit 2025-08-28 16:26:09 +02:00
rust rust: module: place cleanup_module() in .exit.text section 2025-07-06 10:57:54 +02:00
samples samples: mei: Fix building on musl libc 2025-08-15 12:04:55 +02:00
scripts kconfig: lxdialog: fix 'space' to (de)select options 2025-08-28 16:26:02 +02:00
security apparmor: use the condition in AA_BUG_FMT even with debug disabled 2025-08-28 16:26:01 +02:00
sound ASoC: fsl_sai: replace regmap_write with regmap_update_bits 2025-08-28 16:26:03 +02:00
tools tools/nolibc: fix spelling of FD_SETBITMASK in FD_* macros 2025-08-28 16:26:04 +02:00
usr kbuild: hdrcheck: fix cross build with clang 2025-06-27 11:07:25 +01:00
virt KVM: Fix a data race on last_boosted_vcpu in kvm_vcpu_on_spin() 2024-06-27 13:46:21 +02:00
.clang-format inet: ping: use hlist_nulls rcu iterator during lookup 2022-12-01 12:42:46 +01:00
.cocciconfig
.get_maintainer.ignore get_maintainer: add Alan to .get_maintainer.ignore 2022-08-20 15:17:44 -07:00
.gitattributes
.gitignore Remove *.orig pattern from .gitignore 2024-10-17 15:21:15 +02:00
.mailmap 9 hotfixes. 6 for MM, 3 for other areas. Four of these patches address 2022-12-10 17:10:52 -08:00
.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: Remove Michal Marek from Kbuild maintainers 2022-11-16 14:53:00 +09:00
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 sign-file,extract-cert: move common SSL helper functions to a header 2025-04-25 10:44:04 +02:00
Makefile Linux 6.1.148 2025-08-15 12:05:13 +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.