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| author | Benjamin Coddington <bcodding@redhat.com> | 2019-10-02 10:40:55 -0400 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2019-10-10 16:14:28 -0400 |
| commit | af84537dbd1b39505d1f3d8023029b4a59666513 (patch) | |
| tree | 0c176e56553e0ac8c56b28794b6343128df56d6e /include/linux | |
| parent | 1047ec868332034d1fbcb2fae19fe6d4cb869ff2 (diff) | |
| download | linux-af84537dbd1b39505d1f3d8023029b4a59666513.tar.gz linux-af84537dbd1b39505d1f3d8023029b4a59666513.tar.bz2 linux-af84537dbd1b39505d1f3d8023029b4a59666513.zip | |
SUNRPC: fix race to sk_err after xs_error_report
Since commit 4f8943f80883 ("SUNRPC: Replace direct task wakeups from
softirq context") there has been a race to the value of the sk_err if both
XPRT_SOCK_WAKE_ERROR and XPRT_SOCK_WAKE_DISCONNECT are set. In that case,
we may end up losing the sk_err value that existed when xs_error_report was
called.
Fix this by reverting to the previous behavior: instead of using SO_ERROR
to retrieve the value at a later time (which might also return sk_err_soft),
copy the sk_err value onto struct sock_xprt, and use that value to wake
pending tasks.
Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
Fixes: 4f8943f80883 ("SUNRPC: Replace direct task wakeups from softirq context")
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/sunrpc/xprtsock.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/sunrpc/xprtsock.h b/include/linux/sunrpc/xprtsock.h index 7638dbe7bc50..a940de03808d 100644 --- a/include/linux/sunrpc/xprtsock.h +++ b/include/linux/sunrpc/xprtsock.h @@ -61,6 +61,7 @@ struct sock_xprt { struct mutex recv_mutex; struct sockaddr_storage srcaddr; unsigned short srcport; + int xprt_err; /* * UDP socket buffer size parameters |