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authorDavid Howells <dhowells@redhat.com>2018-10-20 00:57:57 +0100
committerDavid Howells <dhowells@redhat.com>2018-10-24 00:41:07 +0100
commit4ac15ea53622272c01954461b4814892b7481b40 (patch)
tree3f6d58bfc13699fd7a3c68278e3b6d0f33e12795 /fs/afs
parentded2f4c58ac24083c536aa7d2ff2b73752a88612 (diff)
downloadlinux-4ac15ea53622272c01954461b4814892b7481b40.tar.bz2
afs: Handle EIO from delivery function
Fix afs_deliver_to_call() to handle -EIO being returned by the operation delivery function, indicating that the call found itself in the wrong state, by printing an error and aborting the call. Currently, an assertion failure will occur. This can happen, say, if the delivery function falls off the end without calling afs_extract_data() with the want_more parameter set to false to collect the end of the Rx phase of a call. The assertion failure looks like: AFS: Assertion failed 4 == 7 is false 0x4 == 0x7 is false ------------[ cut here ]------------ kernel BUG at fs/afs/rxrpc.c:462! and is matched in the trace buffer by a line like: kworker/7:3-3226 [007] ...1 85158.030203: afs_io_error: c=0003be0c r=-5 CM_REPLY Fixes: 98bf40cd99fc ("afs: Protect call->state changes against signals") Reported-by: Marc Dionne <marc.dionne@auristor.com> Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'fs/afs')
-rw-r--r--fs/afs/rxrpc.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/afs/rxrpc.c b/fs/afs/rxrpc.c
index a3904a8315de..947ae3ab389b 100644
--- a/fs/afs/rxrpc.c
+++ b/fs/afs/rxrpc.c
@@ -499,7 +499,6 @@ static void afs_deliver_to_call(struct afs_call *call)
case -EINPROGRESS:
case -EAGAIN:
goto out;
- case -EIO:
case -ECONNABORTED:
ASSERTCMP(state, ==, AFS_CALL_COMPLETE);
goto done;
@@ -508,6 +507,10 @@ static void afs_deliver_to_call(struct afs_call *call)
rxrpc_kernel_abort_call(call->net->socket, call->rxcall,
abort_code, ret, "KIV");
goto local_abort;
+ case -EIO:
+ pr_err("kAFS: Call %u in bad state %u\n",
+ call->debug_id, state);
+ /* Fall through */
case -ENODATA:
case -EBADMSG:
case -EMSGSIZE: