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44090cc876
linux/net
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Laura Abbott 44090cc876 sunrpc: Don't use stack buffer with scatterlist 
Fedora got a bug report from NFS:

kernel BUG at include/linux/scatterlist.h:143!
...
RIP: 0010:sg_init_one+0x7d/0x90
..
  make_checksum+0x4e7/0x760 [rpcsec_gss_krb5]
  gss_get_mic_kerberos+0x26e/0x310 [rpcsec_gss_krb5]
  gss_marshal+0x126/0x1a0 [auth_rpcgss]
  ? __local_bh_enable_ip+0x80/0xe0
  ? call_transmit_status+0x1d0/0x1d0 [sunrpc]
  call_transmit+0x137/0x230 [sunrpc]
  __rpc_execute+0x9b/0x490 [sunrpc]
  rpc_run_task+0x119/0x150 [sunrpc]
  nfs4_run_exchange_id+0x1bd/0x250 [nfsv4]
  _nfs4_proc_exchange_id+0x2d/0x490 [nfsv4]
  nfs41_discover_server_trunking+0x1c/0xa0 [nfsv4]
  nfs4_discover_server_trunking+0x80/0x270 [nfsv4]
  nfs4_init_client+0x16e/0x240 [nfsv4]
  ? nfs_get_client+0x4c9/0x5d0 [nfs]
  ? _raw_spin_unlock+0x24/0x30
  ? nfs_get_client+0x4c9/0x5d0 [nfs]
  nfs4_set_client+0xb2/0x100 [nfsv4]
  nfs4_create_server+0xff/0x290 [nfsv4]
  nfs4_remote_mount+0x28/0x50 [nfsv4]
  mount_fs+0x3b/0x16a
  vfs_kern_mount.part.35+0x54/0x160
  nfs_do_root_mount+0x7f/0xc0 [nfsv4]
  nfs4_try_mount+0x43/0x70 [nfsv4]
  ? get_nfs_version+0x21/0x80 [nfs]
  nfs_fs_mount+0x789/0xbf0 [nfs]
  ? pcpu_alloc+0x6ca/0x7e0
  ? nfs_clone_super+0x70/0x70 [nfs]
  ? nfs_parse_mount_options+0xb40/0xb40 [nfs]
  mount_fs+0x3b/0x16a
  vfs_kern_mount.part.35+0x54/0x160
  do_mount+0x1fd/0xd50
  ksys_mount+0xba/0xd0
  __x64_sys_mount+0x21/0x30
  do_syscall_64+0x60/0x1f0
  entry_SYSCALL_64_after_hwframe+0x49/0xbe

This is BUG_ON(!virt_addr_valid(buf)) triggered by using a stack
allocated buffer with a scatterlist. Convert the buffer for
rc4salt to be dynamically allocated instead.

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1615258
Signed-off-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2018-08-22 18:32:07 -04:00
..
6lowpan
9p treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
802
8021q Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2018-06-06 18:39:49 -07:00
appletalk Merge branch 'work.aio-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-06-04 13:57:43 -07:00
atm treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
ax25 Merge branch 'work.aio-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-06-04 13:57:43 -07:00
batman-adv Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-05-26 19:46:15 -04:00
bluetooth treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
bpf bpf: making bpf_prog_test run aware of possible data_end ptr change 2018-04-18 23:34:16 +02:00
bpfilter bpfilter: fix race in pipe access 2018-06-07 20:07:28 -04:00
bridge Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-06-16 07:39:34 +09:00
caif net/caif: convert to ->poll_mask 2018-05-26 09:16:44 +02:00
can treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
ceph The main piece is a set of libceph changes that revamps how OSD 2018-06-15 07:24:58 +09:00
core Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-06-16 07:39:34 +09:00
dcb treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
dccp treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
decnet Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2018-06-06 18:39:49 -07:00
dns_resolver KEYS: DNS: limit the length of option strings 2018-04-17 15:17:41 -04:00
dsa net: dsa: add error handling for pskb_trim_rcsum 2018-06-11 14:19:38 -07:00
ethernet net: core: rework basic flow dissection helper 2018-05-08 00:02:36 -04:00
hsr
ieee802154 treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
ife net: sched: ife: check on metadata length 2018-04-22 21:12:00 -04:00
ipv4 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-06-16 07:39:34 +09:00
ipv6 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-06-16 07:39:34 +09:00
iucv net/iucv: convert to ->poll_mask 2018-05-26 09:16:44 +02:00
kcm Merge branch 'work.aio-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-06-04 13:57:43 -07:00
key Merge branch 'work.aio-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-06-04 13:57:43 -07:00
l2tp l2tp: filter out non-PPP sessions in pppol2tp_tunnel_ioctl() 2018-06-15 09:12:37 -07:00
l3mdev
lapb
llc Merge branch 'work.aio-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-06-04 13:57:43 -07:00
mac80211 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-06-16 07:39:34 +09:00
mac802154 net/mac802154: disambiguate mac80215 vs mac802154 trace events 2018-03-28 22:55:18 +02:00
mpls net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
ncsi net/ncsi: Avoid GFP_KERNEL in response handler 2018-06-03 10:42:07 -04:00
netfilter Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-06-16 07:39:34 +09:00
netlabel audit: use inline function to get audit context 2018-05-14 17:24:18 -04:00
netlink treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
netrom treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
nfc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2018-06-06 18:39:49 -07:00
nsh nsh: fix infinite loop 2018-05-04 12:54:38 -04:00
openvswitch treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
packet treewide: Use array_size() in vzalloc() 2018-06-12 16:19:22 -07:00
phonet Merge branch 'work.aio-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-06-04 13:57:43 -07:00
psample
qrtr Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2018-06-06 18:39:49 -07:00
rds Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-06-16 07:39:34 +09:00
rfkill rfkill: Create rfkill-none LED trigger 2018-05-23 11:26:45 +02:00
rose treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
rxrpc treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
sched treewide: kvzalloc() -> kvcalloc() 2018-06-12 16:19:22 -07:00
sctp Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-06-16 07:39:34 +09:00
smc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-06-16 07:39:34 +09:00
strparser strparser: Add __strp_unpause and use it in ktls. 2018-06-06 14:07:53 -04:00
sunrpc sunrpc: Don't use stack buffer with scatterlist 2018-08-22 18:32:07 -04:00
switchdev
tipc treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
tls tls: fix waitall behavior in tls_sw_recvmsg 2018-06-15 09:14:30 -07:00
unix Merge branch 'work.aio-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-06-04 13:57:43 -07:00
vmw_vsock net/vmw_vsock: convert to ->poll_mask 2018-05-26 09:16:44 +02:00
wimax
wireless Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-06-16 07:39:34 +09:00
x25 Merge branch 'work.aio-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-06-04 13:57:43 -07:00
xdp xsk: silence warning on memory allocation failure 2018-06-11 23:49:07 +02:00
xfrm Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2018-06-06 18:39:49 -07:00
compat.c net: support compat 64-bit time in {s,g}etsockopt 2018-04-27 19:46:06 -04:00
Kconfig net: Introduce generic failover module 2018-05-28 22:59:54 -04:00
Makefile bpfilter: switch to CC from HOSTCC 2018-06-05 10:21:18 -04:00
socket.c socket: close race condition between sock_close() and sockfs_setattr() 2018-06-10 12:25:53 -07:00
sysctl_net.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00