mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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Laura Abbott
19ca1a2830
[ Upstream commit 44090cc876 ]
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>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.