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Date: Sat, 31 Aug 2013 12:12:01 +0200 From: Pavel Machek <pavel@....cz> To: marcel@...tmann.org, gustavo@...ovan.org, johan.hedberg@...il.com, linux-bluetooth@...r.kernel.org, kernel list <linux-kernel@...r.kernel.org> Subject: 3.10: unpriviledged user crashes kernel using bluetooth On Sat 2013-08-31 12:09:33, Pavel Machek wrote: > Hi! > > > . Python sources for client/server are at > > > > http://tui.cvs.sourceforge.net/viewvc/tui/tui/liveview/ > > > > . My kernels like to warn about > > > > Aug 31 11:46:37 duo kernel: WARNING: CPU: 1 PID: 1 at > > net/wireless/reg.c:423 regulatory_init+0x92/0xff() > > Aug 31 11:46:37 duo kernel: db.txt is empty, you should update it... > > > > . 3.10 does not seem to be affected. > > When I said 3.10 was not affected, I was wrong. 3.10 survived the > test, but when I attempted to reboot the box, I got > > WARNING: at lib/list_debug.c:59 __list_del_entry+0xac/0xe0() > list_del_corruption. prev->next should be f44fffd4, but was f44c402c > ... > ...Comm: bluetoothd.... > Call trace: > ... > __list_del_entry > cd_forget > evict > iput Aha, I have even better dump in the logs: <6>cfg80211: Calling CRDA to update world regulatory domain <6>wlan0: authenticate with 00:11:95:05:30:d7 <6>wlan0: send auth to 00:11:95:05:30:d7 (try 1/3) <6>iwl3945 0000:03:00.0 wlan0: disabling HT as WMM/QoS is not supported by the AP <6>iwl3945 0000:03:00.0 wlan0: disabling VHT as WMM/QoS is not supported by the AP <6>wlan0: RX AssocResp from 00:11:95:05:30:d7 (capab=0x401 status=0 aid=2) <6>wlan0: associated <4>the code is fine but needs lockdep annotation. <4>turning off the locking correctness validator. <4> edd4cc30 f3187db0 c095a48c f3187df0 c027c43e c0b27dcc f5f71670 00000000 <4> 00000000 f3187df4 00000246 edd4cc30 c10253b0 00000000 00000000 c10253b0 <4> [<c095a48c>] dump_stack+0x16/0x18 <4> [<c027c43e>] __lock_acquire+0x71e/0xcf0 <4> [<c027ca74>] lock_acquire+0x64/0x80 <4> [<c04e59ec>] ? tty_buffer_flush+0x1c/0xd0 <4> [<c095d52b>] _raw_spin_lock_irqsave+0x3b/0x50 <4> [<c04e59ec>] ? tty_buffer_flush+0x1c/0xd0 <4> [<c04e59ec>] tty_buffer_flush+0x1c/0xd0 <4> [<c04df38f>] tty_ioctl+0x5bf/0xa80 <4> [<c027c0a6>] ? __lock_acquire+0x386/0xcf0 <4> [<c02e4899>] do_vfs_ioctl+0x89/0x5b0 <4> [<c0455873>] ? debug_check_no_obj_freed+0xe3/0x190 <4> [<c02e2ac8>] ? final_putname+0x18/0x40 <4> [<c095e4b8>] sysenter_do_call+0x12/0x31 <6>wlan0: deauthenticated from 00:11:95:05:30:d7 (Reason: 3) <6>cfg80211: Calling CRDA to update world regulatory domain <6>wlan0: authenticate with 00:11:95:05:30:d7 <6>wlan0: send auth to 00:11:95:05:30:d7 (try 1/3) <6>wlan0: authenticated <6>iwl3945 0000:03:00.0 wlan0: disabling HT as WMM/QoS is not supported by the AP <6>iwl3945 0000:03:00.0 wlan0: disabling VHT as WMM/QoS is not supported by the AP <6>wlan0: associate with 00:11:95:05:30:d7 (try 1/3) <6>wlan0: RX AssocResp from 00:11:95:05:30:d7 (capab=0x401 status=0 aid=2) <6>wlan0: associated <6>wlan0: deauthenticated from 00:11:95:05:30:d7 (Reason: 3) <6>cfg80211: Calling CRDA to update world regulatory domain <6>wlan0: authenticated <6>iwl3945 0000:03:00.0 wlan0: disabling HT as WMM/QoS is not supported by the AP <6>iwl3945 0000:03:00.0 wlan0: disabling VHT as WMM/QoS is not supported by the AP Broadcast message from root@duo (console) (Sat Aug 31 12:05:57 2013): The system is going down for reboot NOW! <7>uhci_hcd 0000:00:1d.3: release dev 2 ep81-INT, period 1, phase 0, 23 us <4>WARNING: at lib/list_debug.c:59 __list_del_entry+0xac/0xe0() <4>list_del corruption. prev->next should be f44fffd4, but was f44c402c <4>Modules linked in: <4>CPU: 0 PID: 2801 Comm: bluetoothd Tainted: G W 3.10.0+ #293 <4>Hardware name: LENOVO 17097HU/17097HU, BIOS 7BETD8WW (2.19 ) 03/31/2011 <4> 0000003b f0933e14 c095a48c f0933e3c c022c96f c0b47bcc f0933e68 0000003b <4> c0454ddc c0454ddc f44c402c f44fffd4 f44c4000 f0933e54 c022ca0e 00000009 <4> f0933e4c c0b47bcc f0933e68 f0933e74 c0454ddc c0b474dd 0000003b c0b47bcc <4>Call Trace: <4> [<c095a48c>] dump_stack+0x16/0x18 <4> [<c022c96f>] warn_slowpath_common+0x5f/0x80 <4> [<c0454ddc>] ? __list_del_entry+0xac/0xe0 <4> [<c0454ddc>] ? __list_del_entry+0xac/0xe0 <4> [<c0454ddc>] __list_del_entry+0xac/0xe0 <4> [<c02d9276>] cd_forget+0x26/0x60 <4> [<c02ebc69>] evict+0x119/0x170 <4> [<c02ebda6>] iput+0xe6/0x170 <4> [<c02e950f>] d_kill+0xaf/0x100 <4> [<c02e9bf6>] dput+0xc6/0x170 <4> [<c02d6d84>] __fput+0x154/0x200 <4> [<c02d6e98>] ____fput+0x8/0x10 <4> [<c0247a61>] task_work_run+0x81/0xb0 <1>BUG: unable to handle kernel paging request at fffffffc <1>IP: [<c02d3943>] filp_close+0x13/0x80 <4>*pde = 00d14067 *pte = 00000000 <4>Oops: 0000 [#2] SMP DEBUG_PAGEALLOC <4>Modules linked in: <0>CPU: 1 PID: 3735 Comm: python Tainted: G D W 3.10.0+ #293 <0>Hardware name: LENOVO 17097HU/17097HU, BIOS 7BETD8WW (2.19 ) 03/31/2011 <0>task: f29c6670 ti: edf28000 task.ti: edf28000 <4>EIP: 0060:[<c02d3943>] EFLAGS: 00210282 CPU: 1 <4>EIP is at filp_close+0x13/0x80 <4>EAX: ffffffc0 EBX: ffffffc0 ECX: 00000000 EDX: ee297f00 <4>ESI: ee297f00 EDI: f4779be0 EBP: edf29de0 ESP: edf29dd0 <4> DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 <4>CR0: 8005003b CR2: fffffffc CR3: 00d13000 CR4: 00000710 <4>DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 <4>DR6: ffff0ff0 DR7: 00000400 <0>Stack: <4> 00200246 00000000 0000001f f4779be0 edf29e0c c02ee2a5 00000002 00000001 <4> 00000000 c02ee21a 00000000 ee297f00 f29c6670 ee297f00 f29c6a54 edf29e20 <4> c02ee372 edfdadc0 f29c6670 f29c6a54 edf29e74 c0231e25 c02eff30 00000000 <0>Call Trace: <4> [<c02ee2a5>] put_files_struct+0xa5/0x130 <4> [<c02ee21a>] ? put_files_struct+0x1a/0x130 <4> [<c02ee372>] exit_files+0x42/0x60 <4> [<c0231e25>] do_exit+0x205/0x850 <4> [<c02eff30>] ? mntput_no_expire+0x30/0xf0 <4> [<c023d454>] ? get_signal_to_deliver+0xa4/0x570 <4> [<c02324a9>] do_group_exit+0x39/0xa0 <4> [<c023d540>] get_signal_to_deliver+0x190/0x570 <4> [<c095db2d>] ? _raw_spin_unlock+0x1d/0x20 <4> [<c0201237>] do_signal+0x37/0x930 <4> [<c07eccc6>] ? sys_recv+0x36/0x40 <4> [<c07ecd7c>] ? SyS_socketcall+0xac/0x290 <4> [<c0201b68>] do_notify_resume+0x38/0x50 <4> [<c095dee2>] work_notifysig+0x24/0x2a <0>Code: 09 3d fc fd ff ff 74 02 5d c3 b8 fc ff ff ff 5d c3 8d b4 26 00 00 00 00 55 89 e5 83 ec 10 89 5d f4 89 c3 89 75 f8 89 d6 89 7d fc <8b> 40 3c 85 c0 74 4a 8b 43 14 85 c0 74 3f 8b 48 30 85 c9 74 38 <0>EIP: [<c02d3943>] filp_close+0x13/0x80 SS:ESP 0068:edf29dd0 <4>CR2: 00000000fffffffc <4>---[ end trace 6a53890e7df0f3dc ]--- <1>Fixing recursive fault but reboot is needed! <6>wlan0: deauthenticating from 00:11:95:05:30:d7 by local choice (reason=3) <6>cfg80211: Calling CRDA to update world regulatory domain Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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