diff options
| author | Jiffin Tony Thottan <jthottan@redhat.com> | 2017-08-07 23:47:00 +0530 |
|---|---|---|
| committer | Shyamsundar Ranganathan <srangana@redhat.com> | 2017-08-11 20:04:00 +0000 |
| commit | cfcc0e9d4b76cdf3a64189463ea61c58edd540de (patch) | |
| tree | 08fe2f3e987e8f259fdcc40f9260fc41bdef6322 /xlators/nfs/server/src/nfs3.c | |
| parent | e0cd91f14eebee77c8ed332cedfd25547daa01d7 (diff) | |
nfs: add NULL check for call state in nfs3_call_state_wipe
Refcounting added for nfs call state in https://review.gluster.org/17696.
This is based on assumption that call state won't NULL when it is freed.
But currently gluster nfs server is crashing in different scenarios at
nfs3_getattr() with following bt
#0 0x00007ff1cfea9205 in _gf_ref_put (ref=ref@entry=0x0) at refcount.c:36
#1 0x00007ff1c1997455 in nfs3_call_state_wipe (cs=cs@entry=0x0) at nfs3.c:559
#2 0x00007ff1c1998931 in nfs3_getattr (req=req@entry=0x7ff1bc0b26d0, fh=fh@entry=0x7ff1c2f76ae0) at nfs3.c:962
#3 0x00007ff1c1998c8a in nfs3svc_getattr (req=0x7ff1bc0b26d0) at nfs3.c:987
#4 0x00007ff1cfbfd8c5 in rpcsvc_handle_rpc_call (svc=0x7ff1bc03e500, trans=trans@entry=0x7ff1bc0c8020, msg=<optimized out>) at rpcsvc.c:695
#5 0x00007ff1cfbfdaab in rpcsvc_notify (trans=0x7ff1bc0c8020, mydata=<optimized out>, event=<optimized out>, data=<optimized out>) at rpcsvc.c:789
#6 0x00007ff1cfbff9e3 in rpc_transport_notify (this=this@entry=0x7ff1bc0c8020, event=event@entry=RPC_TRANSPORT_MSG_RECEIVED, data=data@entry=0x7ff1bc0038d0)
at rpc-transport.c:538
#7 0x00007ff1c4a2e3d6 in socket_event_poll_in (this=this@entry=0x7ff1bc0c8020, notify_handled=<optimized out>) at socket.c:2306
#8 0x00007ff1c4a3097c in socket_event_handler (fd=21, idx=9, gen=19, data=0x7ff1bc0c8020, poll_in=1, poll_out=0, poll_err=0) at socket.c:2458
#9 0x00007ff1cfe950f6 in event_dispatch_epoll_handler (event=0x7ff1c2f76e80, event_pool=0x5618154d5ee0) at event-epoll.c:572
#10 event_dispatch_epoll_worker (data=0x56181551cbd0) at event-epoll.c:648
#11 0x00007ff1cec99e25 in start_thread () from /lib64/libpthread.so.0
#12 0x00007ff1ce56634d in clone () from /lib64/libc.so.6
This patch add previous NULL check move from __nfs3_call_state_wipe() to
nfs3_call_state_wipe()
Cherry picked from commit 111d6bda9259126b0429113c9b8ba479958a4398:
> Change-Id: I2d73632f4be23f14d8467be3d908b09b3a2d87ea
> BUG: 1479030
> Signed-off-by: Jiffin Tony Thottan <jthottan@redhat.com>
> Reviewed-on: https://review.gluster.org/17989
> Smoke: Gluster Build System <jenkins@build.gluster.org>
> CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
> Reviewed-by: Niels de Vos <ndevos@redhat.com>
Change-Id: I2d73632f4be23f14d8467be3d908b09b3a2d87ea
BUG: 1480594
Signed-off-by: Niels de Vos <ndevos@redhat.com>
Reviewed-on: https://review.gluster.org/18027
Smoke: Gluster Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Shyamsundar Ranganathan <srangana@redhat.com>
Diffstat (limited to 'xlators/nfs/server/src/nfs3.c')
| -rw-r--r-- | xlators/nfs/server/src/nfs3.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/xlators/nfs/server/src/nfs3.c b/xlators/nfs/server/src/nfs3.c index e4181779511..e46c4e9205e 100644 --- a/xlators/nfs/server/src/nfs3.c +++ b/xlators/nfs/server/src/nfs3.c @@ -486,9 +486,6 @@ typedef ssize_t (*nfs3_serializer) (struct iovec outmsg, void *args); static void __nfs3_call_state_wipe (nfs3_call_state_t *cs) { - if (!cs) - return; - if (cs->fd) { gf_msg_trace (GF_NFS3, 0, "fd 0x%lx ref: %d", (long)cs->fd, cs->fd->refcount); @@ -547,6 +544,10 @@ err: void nfs3_call_state_wipe (nfs3_call_state_t *cs) { + if (!cs) { + gf_log_callingfn ("nfs", GF_LOG_WARNING, "nfs calling state NULL"); + return; + } GF_REF_PUT (cs); } |