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s390/dasd: Fix potential memleak in dasd_eckd_init() 

`dasd_reserve_req` is allocated before `dasd_vol_info_req`, and it
also needs to be freed before the error returns, just like the other
cases in this function.

Fixes: 9e12e54c7a ("s390/dasd: Handle out-of-space constraint")
Signed-off-by: Qiheng Lin <linqiheng@huawei.com>
Link: https://lore.kernel.org/r/20221208133809.16796-1-linqiheng@huawei.com
Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
Link: https://lore.kernel.org/r/20230210000253.1644903-3-sth@linux.ibm.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Qiheng Lin 2023-02-10 01:02:53 +01:00 committed by Jens Axboe
parent b87c52e431
commit 460e9bed82
1 changed files with 3 additions and 1 deletions
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4
drivers/s390/block/dasd_eckd.c
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@ -6954,8 +6954,10 @@ dasd_eckd_init(void)
return -ENOMEM;
dasd_vol_info_req = kmalloc(sizeof(*dasd_vol_info_req),
GFP_KERNEL | GFP_DMA);
if (!dasd_vol_info_req)
if (!dasd_vol_info_req) {
kfree(dasd_reserve_req);
return -ENOMEM;
}
pe_handler_worker = kmalloc(sizeof(*pe_handler_worker),
GFP_KERNEL | GFP_DMA);
if (!pe_handler_worker) {