Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Yang Yingliang d25bf9af86 genirq/irqdesc: Don't try to remove non-existing sysfs files ... [ Upstream commit 9049e1ca41983ab773d7ea244bee86d7835ec9f5 ] Fault injection tests trigger warnings like this: kernfs: can not remove 'chip_name', no directory WARNING: CPU: 0 PID: 253 at fs/kernfs/dir.c:1616 kernfs_remove_by_name_ns+0xce/0xe0 RIP: 0010:kernfs_remove_by_name_ns+0xce/0xe0 Call Trace: <TASK> remove_files.isra.1+0x3f/0xb0 sysfs_remove_group+0x68/0xe0 sysfs_remove_groups+0x41/0x70 __kobject_del+0x45/0xc0 kobject_del+0x29/0x40 free_desc+0x42/0x70 irq_free_descs+0x5e/0x90 The reason is that the interrupt descriptor sysfs handling does not roll back on a failing kobject_add() during allocation. If the descriptor is freed later on, kobject_del() is invoked with a not added kobject resulting in the above warnings. A proper rollback in case of a kobject_add() failure would be the straight forward solution. But this is not possible due to the way how interrupt descriptor sysfs handling works. Interrupt descriptors are allocated before sysfs becomes available. So the sysfs files for the early allocated descriptors are added later in the boot process. At this point there can be nothing useful done about a failing kobject_add(). For consistency the interrupt descriptor allocation always treats kobject_add() failures as non-critical and just emits a warning. To solve this problem, keep track in the interrupt descriptor whether kobject_add() was successful or not and make the invocation of kobject_del() conditional on that. [ tglx: Massage changelog, comments and use a state bit. ] Fixes: ecb3f394c5 ("genirq: Expose interrupt information through sysfs") Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20221128151612.1786122-1-yangyingliang@huawei.com Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-01-18 11:40:55 +01:00
..
bpf	bpf: Ensure correct locking around vulnerable function find_vpid()	2022-10-26 13:22:24 +02:00
cgroup	memcg: fix possible use-after-free in memcg_write_event_control()	2022-12-14 11:30:43 +01:00
configs
debug	lockdown: also lock down previous kgdb use	2022-06-06 08:33:48 +02:00
dma	dma-debug: make things less spammy under memory pressure	2022-06-22 14:11:19 +02:00
events	perf: Fix possible memleak in pmu_dev_alloc()	2023-01-18 11:40:53 +01:00
gcov	gcov: clang: fix the buffer overflow issue	2022-12-08 11:23:00 +01:00
irq	genirq/irqdesc: Don't try to remove non-existing sysfs files	2023-01-18 11:40:55 +01:00
livepatch	livepatch: fix race between fork and KLP transition	2022-10-26 13:22:18 +02:00
locking	locking/lockdep: Avoid RCU-induced noinstr fail	2021-11-17 09:48:28 +01:00
power	PM: hibernate: Fix mistake in kerneldoc comment	2023-01-18 11:40:53 +01:00
printk	printk: fix return value of printk.devkmsg __setup handler	2022-04-15 14:18:08 +02:00
rcu	rcu: Don't deboost before reporting expedited quiescent state	2022-03-28 08:46:48 +02:00
sched	sched/deadline: Fix priority inheritance with multiple scheduling classes	2022-09-05 10:27:39 +02:00
time	timekeeping: contribute wall clock to rng on time change	2022-08-25 11:18:15 +02:00
trace	tracing/ring-buffer: Only do full wait when cpu != RING_BUFFER_ALL_CPUS	2023-01-18 11:40:46 +01:00
.gitignore	kbuild: update config_data.gz only when the content of .config is changed	2021-05-11 14:04:16 +02:00
acct.c
async.c	Revert "module, async: async_synchronize_full() on module init iff async is used"	2022-02-23 11:59:56 +01:00
audit.c	audit: improve audit queue handling when "audit=1" on cmdline	2022-02-08 18:24:26 +01:00
audit.h	audit: log AUDIT_TIME_* records only from rules	2022-04-15 14:18:04 +02:00
audit_fsnotify.c	audit: fix potential double free on error path from fsnotify_add_inode_mark	2022-09-05 10:27:38 +02:00
audit_tree.c	audit: move put_tree() to avoid trim_trees refcount underflow and UAF	2021-09-03 10:08:16 +02:00
audit_watch.c
auditfilter.c
auditsc.c	audit: log AUDIT_TIME_* records only from rules	2022-04-15 14:18:04 +02:00
backtracetest.c
bounds.c
capability.c
compat.c
configs.c
context_tracking.c
cpu.c	random: clear fast pool, crng, and batches in cpuhp bring up	2022-06-22 14:11:12 +02:00
cpu_pm.c
crash_core.c
crash_dump.c
cred.c
delayacct.c
dma.c
exec_domain.c
exit.c	don't dump the threads that had been already exiting when zapped.	2020-11-18 19:20:31 +01:00
extable.c
fail_function.c	fail_function: Remove a redundant mutex unlock	2020-11-24 13:29:18 +01:00
fork.c	copy_process(): Move fd_install() out of sighand->siglock critical section	2022-02-23 12:00:00 +01:00
freezer.c
futex.c	mm, futex: fix shared futex pgoff on shmem huge page	2021-06-30 08:47:55 -04:00
gen_kheaders.sh
groups.c
hung_task.c
iomem.c
irq_work.c
jump_label.c
kallsyms.c
kcmp.c	exec: Transform exec_update_mutex into a rw_semaphore	2021-01-09 13:44:55 +01:00
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kcov.c
kexec.c
kexec_core.c	kernel: kexec: remove the lock operation of system_transition_mutex	2021-02-03 23:25:56 +01:00
kexec_elf.c
kexec_file.c	kexec_file: drop weak attribute from arch_kexec_apply_relocations[_add]	2022-07-02 16:28:50 +02:00
kexec_internal.h
kheaders.c
kmod.c
kprobes.c	kprobes: Skip clearing aggrprobe's post_handler in kprobe-on-ftrace case	2022-11-25 17:42:21 +01:00
ksysfs.c
kthread.c	kthread: Fix PF_KTHREAD vs to_kthread() race	2021-09-12 08:56:39 +02:00
latencytop.c
Makefile	kbuild: update config_data.gz only when the content of .config is changed	2021-05-11 14:04:16 +02:00
module-internal.h
module.c	module/ftrace: handle patchable-function-entry	2022-02-23 11:59:56 +01:00
module_signature.c	module: harden ELF info handling	2021-04-07 14:47:38 +02:00
module_signing.c	module: harden ELF info handling	2021-04-07 14:47:38 +02:00
notifier.c
nsproxy.c
padata.c
panic.c
params.c
pid.c
pid_namespace.c	memcg: enable accounting for pids in nested pid namespaces	2021-09-22 12:26:37 +02:00
profile.c	profiling: fix shift too large makes kernel panic	2022-08-25 11:18:02 +02:00
ptrace.c	ptrace: Reimplement PTRACE_KILL by always sending SIGKILL	2022-06-14 18:11:24 +02:00
range.c
reboot.c	reboot: fix overflow parsing reboot cpu number	2020-11-18 19:20:30 +01:00
relay.c
resource.c
rseq.c
seccomp.c	seccomp: Invalidate seccomp mode to catch death failures	2022-02-16 12:52:53 +01:00
signal.c	signal handling: don't use BUG_ON() for debugging	2022-07-21 20:59:27 +02:00
smp.c	smp: Fix offline cpu check in flush_smp_call_function_queue()	2022-04-20 09:19:39 +02:00
smpboot.c	kthread: Extract KTHREAD_IS_PER_CPU	2021-02-07 15:35:49 +01:00
smpboot.h
softirq.c
stackleak.c
stacktrace.c
stop_machine.c
sys.c	prctl: allow to setup brk for et_dyn executables	2021-09-26 14:07:08 +02:00
sys_ni.c	kernel/sys_ni: add compat entry for fadvise64_64	2022-09-05 10:27:38 +02:00
sysctl-test.c
sysctl.c	proc: proc_skip_spaces() shouldn't think it is working on C strings	2022-12-08 11:23:06 +01:00
sysctl_binary.c
task_work.c
taskstats.c
test_kprobes.c
torture.c
tracepoint.c	tracepoint: Add tracepoint_probe_register_may_exist() for BPF tracing	2021-07-14 16:53:08 +02:00
tsacct.c	taskstats: Cleanup the use of task->exit_code	2022-02-23 11:59:57 +01:00
ucount.c
uid16.c
uid16.h
umh.c	usermodehelper: reset umask to default before executing user process	2020-10-14 10:32:58 +02:00
up.c	smp: Fix smp_call_function_single_async prototype	2021-05-14 09:44:33 +02:00
user-return-notifier.c
user.c
user_namespace.c
utsname.c
utsname_sysctl.c
watchdog.c	watchdog: export lockup_detector_reconfigure	2022-08-25 11:18:37 +02:00
watchdog_hld.c
workqueue.c	workqueue: don't skip lockdep work dependency in cancel_work_sync()	2022-09-28 11:04:09 +02:00
workqueue_internal.h