From: Takahiro Yasui Date: Tue, 6 Jan 2009 03:04:56 +0000 (+0000) Subject: dm log: fix dm_io_client leak on error paths X-Git-Tag: firefly_0821_release~16392^2~16 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=c7a2bd19b7c1e0bd2c7604c53d2583e91e536948;p=firefly-linux-kernel-4.4.55.git dm log: fix dm_io_client leak on error paths In create_log_context function, dm_io_client_destroy function needs to be called, when memory allocation of disk_header, sync_bits and recovering_bits failed, but dm_io_client_destroy is not called. Cc: stable@kernel.org Signed-off-by: Takahiro Yasui Acked-by: Jonathan Brassow Signed-off-by: Alasdair G Kergon --- diff --git a/drivers/md/dm-log.c b/drivers/md/dm-log.c index a8c0fc79ca78..13e2a1a1a941 100644 --- a/drivers/md/dm-log.c +++ b/drivers/md/dm-log.c @@ -467,6 +467,7 @@ static int create_log_context(struct dm_dirty_log *log, struct dm_target *ti, lc->disk_header = vmalloc(buf_size); if (!lc->disk_header) { DMWARN("couldn't allocate disk log buffer"); + dm_io_client_destroy(lc->io_req.client); kfree(lc); return -ENOMEM; } @@ -482,6 +483,8 @@ static int create_log_context(struct dm_dirty_log *log, struct dm_target *ti, DMWARN("couldn't allocate sync bitset"); if (!dev) vfree(lc->clean_bits); + else + dm_io_client_destroy(lc->io_req.client); vfree(lc->disk_header); kfree(lc); return -ENOMEM; @@ -495,6 +498,8 @@ static int create_log_context(struct dm_dirty_log *log, struct dm_target *ti, vfree(lc->sync_bits); if (!dev) vfree(lc->clean_bits); + else + dm_io_client_destroy(lc->io_req.client); vfree(lc->disk_header); kfree(lc); return -ENOMEM;