Eric Dumazet 7169f60110 watch_queue: Free the page array when watch_queue is dismantled ... commit b490207017 upstream. Commit 7ea1a0124b ("watch_queue: Free the alloc bitmap when the watch_queue is torn down") took care of the bitmap, but not the page array. BUG: memory leak unreferenced object 0xffff88810d9bc140 (size 32): comm "syz-executor335", pid 3603, jiffies 4294946994 (age 12.840s) hex dump (first 32 bytes): 40 a7 40 04 00 ea ff ff 00 00 00 00 00 00 00 00 @.@............. 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: kmalloc_array include/linux/slab.h:621 [inline] kcalloc include/linux/slab.h:652 [inline] watch_queue_set_size+0x12f/0x2e0 kernel/watch_queue.c:251 pipe_ioctl+0x82/0x140 fs/pipe.c:632 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __x64_sys_ioctl+0xfc/0x140 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] Reported-by: syzbot+25ea042ae28f3888727a@syzkaller.appspotmail.com Fixes: c73be61ced ("pipe: Add general notification queue support") Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David Howells <dhowells@redhat.com> Cc: Jann Horn <jannh@google.com> Link: https://lore.kernel.org/r/20220322004654.618274-1-eric.dumazet@gmail.com/ Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2022-04-08 14:40:41 +02:00
..
bpf	bpf: Add schedule points in batch ops	2022-03-02 11:42:49 +01:00
cgroup	cgroup-v1: Correct privileges check in release_agent writes	2022-03-28 09:57:08 +02:00
configs
debug	kdb: Fix the putarea helper function	2022-04-08 14:40:29 +02:00
dma	dma-debug: fix return value of __setup handlers	2022-04-08 14:40:25 +02:00
entry
events	perf/core: Fix address filter parser for multiple filters	2022-04-08 14:40:03 +02:00
gcov
irq
kcsan
livepatch	livepatch: Fix build failure on 32 bits processors	2022-04-08 14:40:15 +02:00
locking	locking/lockdep: Iterate lock_classes directly when reading lockdep files	2022-04-08 14:40:32 +02:00
power	PM: suspend: fix return value of __setup handler	2022-04-08 14:40:01 +02:00
printk	printk: fix return value of printk.devkmsg __setup handler	2022-04-08 14:40:08 +02:00
rcu	rcu: Don't deboost before reporting expedited quiescent state	2022-03-28 09:57:10 +02:00
sched	sched/core: Export pelt_thermal_tp	2022-04-08 14:40:03 +02:00
time	clocksource: Avoid accidental unstable marking of clocksources	2022-01-27 10:54:06 +01:00
trace	tracing: Ensure trace buffer is at least 4096 bytes large	2022-03-16 14:16:00 +01:00
.gitignore
acct.c
async.c	Revert "module, async: async_synchronize_full() on module init iff async is used"	2022-02-23 12:01:00 +01:00
audit_fsnotify.c
audit_tree.c
audit_watch.c
audit.c	audit: improve audit queue handling when "audit=1" on cmdline	2022-02-08 18:30:34 +01:00
audit.h	audit: log AUDIT_TIME_* records only from rules	2022-04-08 14:40:00 +02:00
auditfilter.c
auditsc.c	audit: log AUDIT_TIME_* records only from rules	2022-04-08 14:40:00 +02:00
backtracetest.c
bounds.c
capability.c
compat.c
configs.c
context_tracking.c
cpu_pm.c
cpu.c	sched/scs: Reset task stack state in bringup_cpu()	2021-12-01 09:19:08 +01:00
crash_core.c
crash_dump.c
cred.c
delayacct.c
dma.c
exec_domain.c
exit.c
extable.c
fail_function.c
fork.c	copy_process(): Move fd_install() out of sighand->siglock critical section	2022-02-23 12:01:08 +01:00
freezer.c
futex.c
gen_kheaders.sh
groups.c
hung_task.c
iomem.c
irq_work.c
jump_label.c
kallsyms.c
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kcov.c
kexec_core.c
kexec_elf.c
kexec_file.c
kexec_internal.h
kexec.c
kheaders.c
kmod.c
kprobes.c	kprobes: Limit max data_size of the kretprobe instances	2021-12-08 09:03:20 +01:00
ksysfs.c
kthread.c
latencytop.c
Makefile
module_signature.c
module_signing.c
module-internal.h
module.c	Revert "module, async: async_synchronize_full() on module init iff async is used"	2022-02-23 12:01:00 +01:00
notifier.c
nsproxy.c
padata.c
panic.c
params.c
pid_namespace.c
pid.c
profile.c
ptrace.c	ptrace: Check PTRACE_O_SUSPEND_SECCOMP permission on PTRACE_SEIZE	2022-04-08 14:39:50 +02:00
range.c
reboot.c
regset.c
relay.c
resource.c
rseq.c	rseq: Remove broken uapi field layout on 32-bit little endian	2022-04-08 14:40:03 +02:00
scftorture.c
scs.c
seccomp.c
signal.c
smp.c
smpboot.c
smpboot.h
softirq.c
stackleak.c	gcc-plugins/stackleak: Use noinstr in favor of notrace	2022-02-23 12:01:00 +01:00
stacktrace.c
static_call.c
stop_machine.c
sys_ni.c
sys.c
sysctl-test.c
sysctl.c	x86/speculation: Include unprivileged eBPF status in Spectre v2 mitigation reporting	2022-03-11 12:11:49 +01:00
task_work.c
taskstats.c
test_kprobes.c
torture.c
tracepoint.c
tsacct.c	taskstats: Cleanup the use of task->exit_code	2022-01-27 10:54:33 +01:00
ucount.c
uid16.c
uid16.h
umh.c
up.c
user_namespace.c
user-return-notifier.c
user.c
usermode_driver.c
utsname_sysctl.c
utsname.c
watch_queue.c	watch_queue: Free the page array when watch_queue is dismantled	2022-04-08 14:40:41 +02:00
watchdog_hld.c
watchdog.c
workqueue_internal.h
workqueue.c	workqueue: Fix unbind_workers() VS wq_worker_running() race	2022-01-16 09:14:22 +01:00