https://github.com/torvalds/linux
Revision c2d2e6738a209f0f9dffa2dc8e7292fc45360d61 authored by Jason Andryuk on 28 February 2018, 12:23:23 UTC, committed by Juergen Gross on 28 February 2018, 19:20:08 UTC
A toolstack may delete the vif frontend and backend xenstore entries
while xen-netfront is in the removal code path. In that case, the
checks for xenbus_read_driver_state would return XenbusStateUnknown, and
xennet_remove would hang indefinitely. This hang prevents system
shutdown.
xennet_remove must be able to handle XenbusStateUnknown, and
netback_changed must also wake up the wake_queue for that state as well.
Fixes: 5b5971df3bc2 ("xen-netfront: remove warning when unloading module")
Signed-off-by: Jason Andryuk <jandryuk@gmail.com>
Cc: Eduardo Otubo <otubo@redhat.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
1 parent 910f8be
Tip revision: c2d2e6738a209f0f9dffa2dc8e7292fc45360d61 authored by Jason Andryuk on 28 February 2018, 12:23:23 UTC
xen-netfront: Fix hang on device removal
xen-netfront: Fix hang on device removal
Tip revision: c2d2e67
| File | Mode | Size |
|---|---|---|
| 9p | ||
| adfs | ||
| affs | ||
| afs | ||
| autofs4 | ||
| befs | ||
| bfs | ||
| btrfs | ||
| cachefiles | ||
| ceph | ||
| cifs | ||
| coda | ||
| configfs | ||
| cramfs | ||
| crypto | ||
| debugfs | ||
| devpts | ||
| dlm | ||
| ecryptfs | ||
| efivarfs | ||
| efs | ||
| exofs | ||
| exportfs | ||
| ext2 | ||
| ext4 | ||
| f2fs | ||
| fat | ||
| freevxfs | ||
| fscache | ||
| fuse | ||
| gfs2 | ||
| hfs | ||
| hfsplus | ||
| hostfs | ||
| hpfs | ||
| hugetlbfs | ||
| isofs | ||
| jbd2 | ||
| jffs2 | ||
| jfs | ||
| kernfs | ||
| lockd | ||
| minix | ||
| nfs | ||
| nfs_common | ||
| nfsd | ||
| nilfs2 | ||
| nls | ||
| notify | ||
| ntfs | ||
| ocfs2 | ||
| omfs | ||
| openpromfs | ||
| orangefs | ||
| overlayfs | ||
| proc | ||
| pstore | ||
| qnx4 | ||
| qnx6 | ||
| quota | ||
| ramfs | ||
| reiserfs | ||
| romfs | ||
| squashfs | ||
| sysfs | ||
| sysv | ||
| tracefs | ||
| ubifs | ||
| udf | ||
| ufs | ||
| xfs | ||
| Kconfig | -rw-r--r-- | 7.2 KB |
| Kconfig.binfmt | -rw-r--r-- | 7.2 KB |
| Makefile | -rw-r--r-- | 4.2 KB |
| aio.c | -rw-r--r-- | 46.5 KB |
| anon_inodes.c | -rw-r--r-- | 4.9 KB |
| attr.c | -rw-r--r-- | 9.2 KB |
| bad_inode.c | -rw-r--r-- | 5.3 KB |
| binfmt_aout.c | -rw-r--r-- | 10.8 KB |
| binfmt_elf.c | -rw-r--r-- | 63.2 KB |
| binfmt_elf_fdpic.c | -rw-r--r-- | 47.3 KB |
| binfmt_em86.c | -rw-r--r-- | 2.8 KB |
| binfmt_flat.c | -rw-r--r-- | 27.7 KB |
| binfmt_misc.c | -rw-r--r-- | 18.2 KB |
| binfmt_script.c | -rw-r--r-- | 3.0 KB |
| block_dev.c | -rw-r--r-- | 53.1 KB |
| buffer.c | -rw-r--r-- | 93.0 KB |
| char_dev.c | -rw-r--r-- | 16.7 KB |
| compat.c | -rw-r--r-- | 5.1 KB |
| compat_binfmt_elf.c | -rw-r--r-- | 3.4 KB |
| compat_ioctl.c | -rw-r--r-- | 42.2 KB |
| coredump.c | -rw-r--r-- | 21.2 KB |
| dax.c | -rw-r--r-- | 43.8 KB |
| dcache.c | -rw-r--r-- | 95.1 KB |
| dcookies.c | -rw-r--r-- | 6.9 KB |
| direct-io.c | -rw-r--r-- | 41.0 KB |
| drop_caches.c | -rw-r--r-- | 1.6 KB |
| eventfd.c | -rw-r--r-- | 10.8 KB |
| eventpoll.c | -rw-r--r-- | 62.9 KB |
| exec.c | -rw-r--r-- | 45.9 KB |
| fcntl.c | -rw-r--r-- | 23.0 KB |
| fhandle.c | -rw-r--r-- | 6.8 KB |
| file.c | -rw-r--r-- | 23.2 KB |
| file_table.c | -rw-r--r-- | 8.6 KB |
| filesystems.c | -rw-r--r-- | 6.5 KB |
| fs-writeback.c | -rw-r--r-- | 70.8 KB |
| fs_pin.c | -rw-r--r-- | 2.0 KB |
| fs_struct.c | -rw-r--r-- | 3.3 KB |
| inode.c | -rw-r--r-- | 55.2 KB |
| internal.h | -rw-r--r-- | 4.7 KB |
| ioctl.c | -rw-r--r-- | 17.3 KB |
| iomap.c | -rw-r--r-- | 25.7 KB |
| libfs.c | -rw-r--r-- | 30.6 KB |
| locks.c | -rw-r--r-- | 73.6 KB |
| mbcache.c | -rw-r--r-- | 12.0 KB |
| mount.h | -rw-r--r-- | 3.9 KB |
| mpage.c | -rw-r--r-- | 20.9 KB |
| namei.c | -rw-r--r-- | 120.7 KB |
| namespace.c | -rw-r--r-- | 85.5 KB |
| no-block.c | -rw-r--r-- | 688 bytes |
| nsfs.c | -rw-r--r-- | 6.1 KB |
| open.c | -rw-r--r-- | 28.4 KB |
| pipe.c | -rw-r--r-- | 27.1 KB |
| pnode.c | -rw-r--r-- | 15.3 KB |
| pnode.h | -rw-r--r-- | 1.9 KB |
| posix_acl.c | -rw-r--r-- | 21.4 KB |
| proc_namespace.c | -rw-r--r-- | 7.8 KB |
| read_write.c | -rw-r--r-- | 46.8 KB |
| readdir.c | -rw-r--r-- | 11.2 KB |
| select.c | -rw-r--r-- | 34.5 KB |
| seq_file.c | -rw-r--r-- | 22.8 KB |
| signalfd.c | -rw-r--r-- | 8.8 KB |
| splice.c | -rw-r--r-- | 39.6 KB |
| stack.c | -rw-r--r-- | 2.5 KB |
| stat.c | -rw-r--r-- | 19.2 KB |
| statfs.c | -rw-r--r-- | 9.4 KB |
| super.c | -rw-r--r-- | 39.0 KB |
| sync.c | -rw-r--r-- | 9.9 KB |
| timerfd.c | -rw-r--r-- | 13.3 KB |
| userfaultfd.c | -rw-r--r-- | 49.3 KB |
| utimes.c | -rw-r--r-- | 7.1 KB |
| xattr.c | -rw-r--r-- | 23.5 KB |
Computing file changes ...
