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| author | Pedro Falcato <pedro.falcato@gmail.com> | 2024-08-07 12:47:25 +0300 |
|---|---|---|
| committer | Dominique Martinet <asmadeus@codewreck.org> | 2024-09-22 23:51:27 +0300 |
| commit | 79efebae4afc2221fa814c3cae001bede66ab259 (patch) | |
| tree | 5a2c347354f286ad27b433ba0c7a9a10c55ae38e /net/9p | |
| parent | 1325e4a91a405f88f1b18626904d37860a4f9069 (diff) | |
| download | linux-79efebae4afc2221fa814c3cae001bede66ab259.tar.xz | |
9p: Avoid creating multiple slab caches with the same name
In the spirit of [1], avoid creating multiple slab caches with the same
name. Instead, add the dev_name into the mix.
[1]: https://lore.kernel.org/all/20240807090746.2146479-1-pedro.falcato@gmail.com/
Signed-off-by: Pedro Falcato <pedro.falcato@gmail.com>
Reported-by: syzbot+3c5d43e97993e1fa612b@syzkaller.appspotmail.com
Message-ID: <20240807094725.2193423-1-pedro.falcato@gmail.com>
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
Diffstat (limited to 'net/9p')
| -rw-r--r-- | net/9p/client.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/net/9p/client.c b/net/9p/client.c index 5cd94721d974..9e7b9151816d 100644 --- a/net/9p/client.c +++ b/net/9p/client.c @@ -979,6 +979,7 @@ struct p9_client *p9_client_create(const char *dev_name, char *options) int err; struct p9_client *clnt; char *client_id; + char *cache_name; clnt = kmalloc(sizeof(*clnt), GFP_KERNEL); if (!clnt) @@ -1035,15 +1036,22 @@ struct p9_client *p9_client_create(const char *dev_name, char *options) if (err) goto close_trans; + cache_name = kasprintf(GFP_KERNEL, "9p-fcall-cache-%s", dev_name); + if (!cache_name) { + err = -ENOMEM; + goto close_trans; + } + /* P9_HDRSZ + 4 is the smallest packet header we can have that is * followed by data accessed from userspace by read */ clnt->fcall_cache = - kmem_cache_create_usercopy("9p-fcall-cache", clnt->msize, + kmem_cache_create_usercopy(cache_name, clnt->msize, 0, 0, P9_HDRSZ + 4, clnt->msize - (P9_HDRSZ + 4), NULL); + kfree(cache_name); return clnt; close_trans: |