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Sebastian Andrzej Siewior f1635765cd futex: Use correct exit on failure from futex_hash_allocate_default()
[ Upstream commit 4ec3c15462b9f44562f45723a92e2807746ba7d1 ]

copy_process() uses the wrong error exit path from futex_hash_allocate_default().
After exiting from futex_hash_allocate_default(), neither tasklist_lock
nor siglock has been acquired. The exit label bad_fork_core_free unlocks
both of these locks which is wrong.

The next exit label, bad_fork_cancel_cgroup, is the correct exit.
sched_cgroup_fork() did not allocate any resources that need to freed.

Use bad_fork_cancel_cgroup on error exit from futex_hash_allocate_default().

Fixes: 7c4f75a21f ("futex: Allow automatic allocation of process wide futex hash")
Reported-by: syzbot+80cb3cc5c14fad191a10@syzkaller.appspotmail.com
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Closes: https://lore.kernel.org/all/68cb1cbd.050a0220.2ff435.0599.GAE@google.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-10-02 13:48:33 +02:00
arch ARM: dts: kirkwood: Fix sound DAI cells for OpenRD clients 2025-10-02 13:48:27 +02:00
block block: don't silently ignore metadata for sync read/write 2025-09-19 16:37:26 +02:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2024-09-20 19:52:48 +03:00
crypto crypto: af_alg - Set merge to zero early in af_alg_sendmsg 2025-09-25 11:16:53 +02:00
Documentation dt-bindings: serial: 8250: move a constraint 2025-09-25 11:16:53 +02:00
drivers drm/amd/display: remove output_tf_change flag 2025-10-02 13:48:33 +02:00
fs NFSv4.2: Protect copy offload and clone against 'eof page pollution' 2025-10-02 13:48:28 +02:00
include net/mlx5: fs, fix UAF in flow counter release 2025-10-02 13:48:32 +02:00
init io_uring: fix breakage in EXPERT menu 2025-08-15 16:38:23 +02:00
io_uring io_uring: fix incorrect io_kiocb reference in io_link_skb 2025-09-25 11:16:53 +02:00
ipc - The 3 patch series "hung_task: extend blocking task stacktrace dump to 2025-05-31 19:12:53 -07:00
kernel futex: Use correct exit on failure from futex_hash_allocate_default() 2025-10-02 13:48:33 +02:00
lib lib/sbitmap: convert shallow_depth from one word to the whole sbitmap 2025-08-20 18:41:31 +02:00
LICENSES LICENSES: add CC0-1.0 license text 2025-05-21 14:54:17 +02:00
mm mm: folio_may_be_lru_cached() unless folio_test_large() 2025-09-25 11:16:46 +02:00
net nexthop: Forbid FDB status change while nexthop is in a group 2025-10-02 13:48:31 +02:00
rust rust: mm: mark VmaNew as transparent 2025-09-09 19:02:29 +02:00
samples samples/damon/prcl: avoid starting DAMON before initialization 2025-09-25 11:16:54 +02:00
scripts rust: support Rust >= 1.91.0 target spec 2025-09-09 19:02:35 +02:00
security apparmor: Fix 8-byte alignment for initial dfa blob streams 2025-08-28 16:34:16 +02:00
sound ALSA: usb-audio: Add mute TLV for playback volumes on more devices 2025-10-02 13:48:26 +02:00
tools selftests: fib_nexthops: Fix creation of non-FDB nexthops 2025-10-02 13:48:32 +02:00
usr usr/include: openrisc: don't HDRTEST bpf_perf_event.h 2025-05-12 15:03:17 +09:00
virt KVM: Allow CPU to reschedule while setting per-page memory attributes 2025-06-24 12:20:17 -07:00
.clang-format Linux 6.15-rc5 2025-05-06 16:39:25 +10:00
.clippy.toml rust: clean Rust 1.88.0's warning about clippy::disallowed_macros configuration 2025-05-07 00:11:47 +02:00
.cocciconfig
.editorconfig .editorconfig: remove trim_trailing_whitespace option 2024-06-13 16:47:52 +02:00
.get_maintainer.ignore MAINTAINERS: Retire Ralf Baechle 2024-11-12 15:48:59 +01:00
.gitattributes
.gitignore gitignore: allow .pylintrc to be tracked 2025-08-15 16:39:03 +02:00
.mailmap 11 hotfixes. 9 are cc:stable and the remainder address post-6.15 issues 2025-07-24 19:13:30 -07:00
.pylintrc docs: add a .pylintrc file with sys path for docs scripts 2025-04-09 12:10:33 -06:00
.rustfmt.toml
COPYING
CREDITS mm: update MAINTAINERS entry for HMM 2025-07-19 19:26:16 -07:00
Kbuild drm: ensure drm headers are self-contained and pass kernel-doc 2025-02-12 10:44:43 +02:00
Kconfig io_uring: Rename KConfig to Kconfig 2025-02-19 14:53:27 -07:00
MAINTAINERS 11 hotfixes. 9 are cc:stable and the remainder address post-6.15 issues 2025-07-24 19:13:30 -07:00
Makefile Linux 6.16.9 2025-09-25 11:16:54 +02:00
README README: Fix spelling 2024-03-18 03:36:32 -06:00

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 reStructuredText 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.