Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Qinglang Miao 57ba2c7a50 cgroup: Fix memory leak when parsing multiple source parameters ... commit 2d18e54dd8662442ef5898c6bdadeaf90b3cebbc upstream. A memory leak is found in cgroup1_parse_param() when multiple source parameters overwrite fc->source in the fs_context struct without free. unreferenced object 0xffff888100d930e0 (size 16): comm "mount", pid 520, jiffies 4303326831 (age 152.783s) hex dump (first 16 bytes): 74 65 73 74 6c 65 61 6b 00 00 00 00 00 00 00 00 testleak........ backtrace: [<000000003e5023ec>] kmemdup_nul+0x2d/0xa0 [<00000000377dbdaa>] vfs_parse_fs_string+0xc0/0x150 [<00000000cb2b4882>] generic_parse_monolithic+0x15a/0x1d0 [<000000000f750198>] path_mount+0xee1/0x1820 [<0000000004756de2>] do_mount+0xea/0x100 [<0000000094cafb0a>] __x64_sys_mount+0x14b/0x1f0 Fix this bug by permitting a single source parameter and rejecting with an error all subsequent ones. Fixes: 8d2451f499 ("cgroup1: switch to option-by-option parsing") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com> Reviewed-by: Zefan Li <lizefan@huawei.com> Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-01-06 14:48:37 +01:00
..
cgroup-internal.h
cgroup-v1.c	cgroup: Fix memory leak when parsing multiple source parameters	2021-01-06 14:48:37 +01:00
cgroup.c	cgroup: fix cgroup_sk_alloc() for sk_clone_lock()	2020-07-22 09:32:49 +02:00
cpuset.c	cpuset: fix race between hotplug work and later CPU offline	2020-12-30 11:51:36 +01:00
debug.c
freezer.c	cgroup: freezer: don't change task and cgroups status unnecessarily	2019-12-31 16:45:06 +01:00
legacy_freezer.c
Makefile
namespace.c
pids.c	cgroup: pids: use atomic64_t for pids->limit	2019-12-17 19:56:15 +01:00
rdma.c
rstat.c	Revert "cgroup: Add memory barriers to plug cgroup_rstat_updated() race window"	2020-06-07 13:18:46 +02:00