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| author | Sagi Grimberg <sagi@grimberg.me> | 2022-11-14 09:45:02 +0300 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2022-11-16 09:20:56 +0300 |
| commit | 0a52566279b4ee65ecd2503d7b7342851f84755c (patch) | |
| tree | 84a0f99709c2be96d86bcc7c5712b53bd3cf3e68 /drivers/nvme/target/auth.c | |
| parent | 8d6e38f636ac063e8062a21e7616f7d9bf0df5d8 (diff) | |
| download | linux-0a52566279b4ee65ecd2503d7b7342851f84755c.tar.xz | |
nvmet: fix a memory leak in nvmet_auth_set_key
When changing dhchap secrets we need to release the old
secrets as well.
kmemleak complaint:
--
unreferenced object 0xffff8c7f44ed8180 (size 64):
comm "check", pid 7304, jiffies 4295686133 (age 72034.246s)
hex dump (first 32 bytes):
44 48 48 43 2d 31 3a 30 30 3a 4c 64 4c 4f 64 71 DHHC-1:00:LdLOdq
79 56 69 67 77 48 55 32 6d 5a 59 4c 7a 35 59 38 yVigwHU2mZYLz5Y8
backtrace:
[<00000000b6fc5071>] kstrdup+0x2e/0x60
[<00000000f0f4633f>] 0xffffffffc0e07ee6
[<0000000053006c05>] 0xffffffffc0dff783
[<00000000419ae922>] configfs_write_iter+0xb1/0x120
[<000000008183c424>] vfs_write+0x2be/0x3c0
[<000000009005a2a5>] ksys_write+0x5f/0xe0
[<00000000cd495c89>] do_syscall_64+0x38/0x90
[<00000000f2a84ac5>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
Fixes: db1312dd9548 ("nvmet: implement basic In-Band Authentication")
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/nvme/target/auth.c')
| -rw-r--r-- | drivers/nvme/target/auth.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/nvme/target/auth.c b/drivers/nvme/target/auth.c index c4113b43dbfe..4dcddcf95279 100644 --- a/drivers/nvme/target/auth.c +++ b/drivers/nvme/target/auth.c @@ -45,9 +45,11 @@ int nvmet_auth_set_key(struct nvmet_host *host, const char *secret, if (!dhchap_secret) return -ENOMEM; if (set_ctrl) { + kfree(host->dhchap_ctrl_secret); host->dhchap_ctrl_secret = strim(dhchap_secret); host->dhchap_ctrl_key_hash = key_hash; } else { + kfree(host->dhchap_secret); host->dhchap_secret = strim(dhchap_secret); host->dhchap_key_hash = key_hash; } |