Message-ID: <20120604215729.GA2531@redhat.com>
Date:	Mon, 4 Jun 2012 17:57:29 -0400
From:	Dave Jones <davej@...hat.com>
To:	Linux Kernel <linux-kernel@...r.kernel.org>
Cc:	sds@...ho.nsa.gov, james.l.morris@...cle.com, eparis@...isplace.org
Subject: selinux_inode_setxattr oops.

More syscall fuzzing fallout..

BUG: unable to handle kernel paging request at ffffffffffffffff
IP: [<ffffffff812cf3f6>] selinux_inode_setxattr+0x196/0x200
PGD 1c0d067 PUD 1c0e067 PMD 0 
Oops: 0000 [#1] SMP 
CPU 0 
Modules linked in: ipt_ULOG can_raw binfmt_misc bnep cmtp kernelcapi dccp_ipv4 dccp hidp af_802154 phonet bluetooth rfkill can pppoe pppox ppp_generic slhc irda crc_ccitt rds af_key rose ax25 atm appletalk ipx p8022 psnap llc p8023 nfs fscache auth_rpcgss nfs_acl lockd ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables btrfs dm_mirror dm_region_hash dm_log zlib_deflate libcrc32c coretemp kvm_intel kvm raid0 ppdev snd_hda_codec_idt dcdbas snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm snd_timer snd microcode soundcore pcspkr snd_page_alloc serio_raw i2c_i801 lpc_ich tg3 mfd_core i5000_edac edac_core i5k_amb parport_pc parport shpchp sunrpc firewire_ohci firewire_core crc_itu_t floppy nouveau ttm drm_kms_helper drm i2c_algo_bit i2c_core mxm_wmi video wmi [last unloaded: scsi_wait_scan]

Pid: 12482, comm: trinity-child0 Not tainted 3.5.0-rc1+ #61 Dell Inc.                 Precision WorkStation 490    /0DT031
RIP: 0010:[<ffffffff812cf3f6>]  [<ffffffff812cf3f6>] selinux_inode_setxattr+0x196/0x200
RSP: 0018:ffff8801f8103cd8  EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8801f3c68860 RCX: 0000000000000021
RDX: 0000000000000000 RSI: 0000000000000020 RDI: 0000000000000000
RBP: ffff8801f8103d58 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801f519a480
R13: ffff88022333d550 R14: ffff8801f7e51720 R15: ffff8801f7e9d0b0
FS:  00007f1bc4538700(0000) GS:ffff880226600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffff CR3: 00000001d39ee000 CR4: 00000000000007f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process trinity-child0 (pid: 12482, threadinfo ffff8801f8102000, task ffff8801f519a480)
Stack:
 ffff8801ffffffea 0000000000000000 0000000000000000 0000071f81021de9
 ffff8801f8103d28 ffff8801f7e9d10a ffff8801f7e51720 0000000000000000
 2222222222222222 0000000022222222 2222222222222222 ffff8801f7e51720
Call Trace:
 [<ffffffff812c8910>] security_inode_setxattr+0x20/0x30
 [<ffffffff811e96a1>] vfs_setxattr+0x91/0xd0
 [<ffffffff811e97d3>] setxattr+0xf3/0x1a0
 [<ffffffff810cdba5>] ? lock_release_holdtime.part.9+0x15/0x1a0
 [<ffffffff810938b1>] ? lock_hrtimer_base+0x31/0x60
 [<ffffffff8106c9fe>] ? do_setitimer+0x18e/0x360
 [<ffffffff816b6710>] ? _raw_spin_unlock_irq+0x30/0x50
 [<ffffffff810d397d>] ? trace_hardirqs_on_caller+0x10d/0x1a0
 [<ffffffff810d3a1d>] ? trace_hardirqs_on+0xd/0x10
 [<ffffffff816b6710>] ? _raw_spin_unlock_irq+0x30/0x50
 [<ffffffff811c47f9>] ? fget_light+0x3f9/0x4f0
 [<ffffffff816bfc15>] ? sysret_check+0x22/0x5d
 [<ffffffff811e9c3b>] sys_fsetxattr+0xbb/0xf0
 [<ffffffff816bfbe9>] system_call_fastpath+0x16/0x1b
Code: 0f 1f 44 00 00 bf 21 00 00 00 89 45 80 e8 63 2f da ff 84 c0 75 5f 48 8b 55 90 48 8b 45 88 be 20 00 00 00 49 8b bc 24 d0 05 00 00 <80> 7c 02 ff 01 49 89 c5 ba 79 05 00 00 49 83 dd 00 e8 b4 77 e2 
RIP  [<ffffffff812cf3f6>] selinux_inode_setxattr+0x196/0x200
 RSP <ffff8801f8103cd8>
CR2: ffffffffffffffff

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