Seeing this in next-20130306: [ 180.958482] BUG: unable to handle kernel paging request at ffffffffffffffe0 [ 180.958488] IP: [<ffffffff811e5661>] avc_has_perm_noaudit+0xbf/0x1bc
[ 180.958506] Pid: 1910, comm: systemd-udevd Tainted: G O
3.9.0-rc1-next-20130306-dirty #64 Dell Inc. Latitude E6500
[ 180.958537] [<ffffffff811e5790>] avc_has_perm_flags+0x32/0xe4
[ 180.958540] [<ffffffff81071c81>] ? mark_lock+0x2e/0x225
[ 180.958543] [<ffffffff811e5ada>] avc_has_perm+0xf/0x11
[ 180.958546] [<ffffffff811e5e92>] selinux_inode_rename+0x84/0x138
[ 180.958549] [<ffffffff811002b6>] ? __kmalloc_track_caller+0x107/0x119
[ 180.958552] [<ffffffff811e36db>] security_inode_rename+0x6f/0x7a
[ 180.958556] [<ffffffff81115a8f>] vfs_rename+0x1e2/0x36a
[ 180.958558] [<ffffffff81115e04>] SYSC_renameat+0x1ed/0x282
[ 180.958562] [<ffffffff81123485>] ? mntput+0x49/0x50
[ 180.958566] [<ffffffff81068576>] ?
__read_seqcount_retry.constprop.21+0x20/0x25
[ 180.958568] [<ffffffff81068b1c>] ? current_kernel_time+0x2a/0x41
[ 180.958572] [<ffffffff81094215>] ? __audit_syscall_entry+0xf9/0x125
[ 180.958575] [<ffffffff8111681f>] SyS_renameat+0x9/0xb
[ 180.958577] [<ffffffff81116837>] SyS_rename+0x16/0x1b
[ 180.958581] [<ffffffff815f55d2>] system_call_fastpath+0x16/0x1b
Most suspicious-looking recent commit in git log:
ommit 65dff759d2948cf18e2029fc5c0c595b8b7da3a5
Author: Li Zefan <lize...@huawei.com>
Date: Fri Mar 1 15:01:56 2013 +0800
cgroup: fix cgroup_path() vs rename() race
rename() will change dentry->d_name. The result of this race can
be worse than seeing partially rewritten name, but we might access
a stale pointer because rename() will re-allocate memory to hold
a longer name.
I admit not having any clue what crazy antics systemd was trying to do
at the time. If this doesn't ring a bell, I'll go bisect it.
pgpCYyk7l4BP6.pgp
Description: PGP signature
