linux

mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ synced 2026-10-14 05:55:17 +00:00

No description

C 96.9%
Assembly 0.9%
Rust 0.6%
Shell 0.6%
Python 0.5%
Other 0.3%

Find a file

Edward Adam Davis 7c24831356 gfs2: fix kernel BUG in gfs2_quota_cleanup [ Upstream commit `71733b4922` ] [Syz report] kernel BUG at fs/gfs2/quota.c:1508! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 5060 Comm: syz-executor505 Not tainted 6.7.0-rc3-syzkaller-00134-g994d5c58e50e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 RIP: 0010:gfs2_quota_cleanup+0x6b5/0x6c0 fs/gfs2/quota.c:1508 Code: fe e9 cf fd ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 2d fe ff ff 4c 89 ef e8 b6 19 23 fe e9 20 fe ff ff e8 ec 11 c7 fd 90 <0f> 0b e8 84 9c 4f 07 0f 1f 40 00 66 0f 1f 00 55 41 57 41 56 41 54 RSP: 0018:ffffc9000409f9e0 EFLAGS: 00010293 RAX: ffffffff83c76854 RBX: 0000000000000002 RCX: ffff888026001dc0 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffffc9000409fb00 R08: ffffffff83c762b0 R09: 1ffff1100fd38015 R10: dffffc0000000000 R11: ffffed100fd38016 R12: dffffc0000000000 R13: ffff88807e9c0828 R14: ffff888014693580 R15: ffff88807e9c0000 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f16d1bd70f8 CR3: 0000000027199000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> gfs2_put_super+0x2e1/0x940 fs/gfs2/super.c:611 generic_shutdown_super+0x13a/0x2c0 fs/super.c:696 kill_block_super+0x44/0x90 fs/super.c:1667 deactivate_locked_super+0xc1/0x130 fs/super.c:484 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1256 task_work_run+0x24a/0x300 kernel/task_work.c:180 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0xa34/0x2750 kernel/exit.c:871 do_group_exit+0x206/0x2c0 kernel/exit.c:1021 __do_sys_exit_group kernel/exit.c:1032 [inline] __se_sys_exit_group kernel/exit.c:1030 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1030 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x45/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b ... [pid 5060] fsconfig(4, FSCONFIG_CMD_RECONFIGURE, NULL, NULL, 0) = 0 [pid 5060] exit_group(1) = ? ... [Analysis] When the task exits, it will execute cleanup_mnt() to recycle the mounted gfs2 file system, but it performs a system call fsconfig(4, FSCONFIG_CMD_RECONFIGURE, NULL, NULL, 0) before executing the task exit operation. This will execute the following kernel path to complete the setting of SDF_JOURNAL_LIVE for sd_flags: SYSCALL_DEFINE5(fsconfig, ..)-> vfs_fsconfig_locked()-> vfs_cmd_reconfigure()-> gfs2_reconfigure()-> gfs2_make_fs_rw()-> set_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags); [Fix] Add SDF_NORECOVERY check in gfs2_quota_cleanup() to avoid checking SDF_JOURNAL_LIVE on the path where gfs2 is being unmounted. Reported-and-tested-by: syzbot+3b6e67ac2b646da57862@syzkaller.appspotmail.com Fixes: `f66af88e33` ("gfs2: Stop using gfs2_make_fs_ro for withdraw") Signed-off-by: Edward Adam Davis <eadavis@qq.com> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		History 2024-01-25 15:44:43 -08:00
arch	perf/x86/intel/uncore: Fix NULL pointer dereference issue in upi_fill_topology()	2024-01-25 15:44:38 -08:00
block	block-6.7-2023-12-29	2023-12-29 11:41:40 -08:00
certs	This update includes the following changes:	2023-11-02 16:15:30 -10:00
crypto	crypto: af_alg - Disallow multiple in-flight AIO requests	2024-01-25 15:44:41 -08:00
Documentation	docs: kernel_feat.py: fix potential command injection	2024-01-20 11:53:02 +01:00
drivers	crypto: hisilicon/zip - save capability registers in probe process	2024-01-25 15:44:42 -08:00
fs	gfs2: fix kernel BUG in gfs2_quota_cleanup	2024-01-25 15:44:43 -08:00
include	crypto: hisilicon/qm - add a function to set qm algs	2024-01-25 15:44:42 -08:00
init	As usual, lots of singleton and doubleton patches all over the tree and	2023-11-02 20:53:31 -10:00
io_uring	io_uring/cmd: fix breakage in SOCKET_URING_OP_SIOC* implementation	2023-12-14 16:52:13 -07:00
ipc	Many singleton patches against the MM code. The patch series which are	2023-11-02 19:38:47 -10:00
kernel	sched/fair: Update min_vruntime for reweight_entity() correctly	2024-01-25 15:44:38 -08:00
lib	kunit: debugfs: Handle errors from alloc_string_stream()	2024-01-25 15:44:40 -08:00
LICENSES	LICENSES: Add the copyleft-next-0.3.1 license	2022-11-08 15:44:01 +01:00
mm	mm/memory_hotplug: fix memmap_on_memory sysfs value retrieval	2024-01-20 11:53:02 +01:00
net	calipso: fix memory leak in netlbl_calipso_add_pass()	2024-01-25 15:44:39 -08:00
rust	Kbuild updates for v6.7	2023-11-04 08:07:19 -10:00
samples	Landlock updates for v6.7-rc1	2023-11-03 09:28:53 -10:00
scripts	scripts/decode_stacktrace.sh: optionally use LLVM utilities	2024-01-20 11:53:02 +01:00
security	selinux: Fix error priority for bind with AF_UNSPEC on PF_INET6 socket	2024-01-25 15:44:40 -08:00
sound	ALSA: hda: cs35l41: Support more HP models without _DSD	2024-01-20 11:53:00 +01:00
tools	selftests/powerpc: Fix error handling in FPU/VMX preemption tests	2024-01-25 15:44:38 -08:00
usr	arch: Remove Itanium (IA-64) architecture	2023-09-11 08:13:17 +00:00
virt	KVM/arm64 fixes for 6.7, part #2	2023-12-22 18:03:54 -05:00
.clang-format	iommu: Add for_each_group_device()	2023-05-23 08:15:51 +02:00
.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: set diff driver for Rust source code files	2023-05-31 17:48:25 +02:00
.gitignore	kbuild: rpm-pkg: generate kernel.spec in rpmbuild/SPECS/	2023-10-03 20:49:09 +09:00
.mailmap	12 hotfixes. 2 are cc:stable and the remainder either address post-6.7	2024-01-05 13:46:18 -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	12 hotfixes. 2 are cc:stable and the remainder either address post-6.7	2024-01-05 13:46:18 -08:00
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	12 hotfixes. 2 are cc:stable and the remainder either address post-6.7	2024-01-05 13:46:18 -08:00
Makefile	Linux 6.7.1	2024-01-20 11:53:02 +01:00
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.