diff options
| author | Alexander Aring <aahringo@redhat.com> | 2020-08-27 22:02:50 +0300 |
|---|---|---|
| committer | David Teigland <teigland@redhat.com> | 2020-08-27 23:59:09 +0300 |
| commit | 043697f030c5c7889682c82f08e05adeb613939a (patch) | |
| tree | 8fb01869a4a71fc6cb5916db1c085a17f7331035 | |
| parent | a47666eb763cc1b8b48bd88185ca56676f40ca89 (diff) | |
| download | linux-043697f030c5c7889682c82f08e05adeb613939a.tar.xz | |
fs: dlm: fix dlm_local_addr memory leak
This patch fixes the following memory detected by kmemleak and umount
gfs2 filesystem which removed the last lockspace:
unreferenced object 0xffff9264f4f48f00 (size 128):
comm "mount", pid 425, jiffies 4294690253 (age 48.159s)
hex dump (first 32 bytes):
02 00 52 48 c0 a8 7a fb 00 00 00 00 00 00 00 00 ..RH..z.........
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<0000000067a34940>] kmemdup+0x18/0x40
[<00000000c935f9ab>] init_local+0x4c/0xa0
[<00000000bbd286ef>] dlm_lowcomms_start+0x28/0x160
[<00000000a86625cb>] dlm_new_lockspace+0x7e/0xb80
[<000000008df6cd63>] gdlm_mount+0x1cc/0x5de
[<00000000b67df8c7>] gfs2_lm_mount.constprop.0+0x1a3/0x1d3
[<000000006642ac5e>] gfs2_fill_super+0x717/0xba9
[<00000000d3ab7118>] get_tree_bdev+0x17f/0x280
[<000000001975926e>] gfs2_get_tree+0x21/0x90
[<00000000561ce1c4>] vfs_get_tree+0x28/0xc0
[<000000007fecaf63>] path_mount+0x434/0xc00
[<00000000636b9594>] __x64_sys_mount+0xe3/0x120
[<00000000cc478a33>] do_syscall_64+0x33/0x40
[<00000000ce9ccf01>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
Signed-off-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
| -rw-r--r-- | fs/dlm/lowcomms.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c index 9db7126de793..d0ece252a0d9 100644 --- a/fs/dlm/lowcomms.c +++ b/fs/dlm/lowcomms.c @@ -1234,6 +1234,14 @@ static void init_local(void) } } +static void deinit_local(void) +{ + int i; + + for (i = 0; i < dlm_local_count; i++) + kfree(dlm_local_addr[i]); +} + /* Initialise SCTP socket and bind to all interfaces */ static int sctp_listen_for_all(void) { @@ -1663,6 +1671,7 @@ void dlm_lowcomms_stop(void) clean_writequeues(); foreach_conn(free_conn); work_stop(); + deinit_local(); } int dlm_lowcomms_start(void) |