linux-stable.git/drivers, branch v3.0.62 Linux kernel stable tree EDAC: Test correct variable in ->store function 2013-02-04T00:21:37+00:00 Dan Carpenter dan.carpenter@oracle.com 2013-01-26T07:49:24+00:00 207d5e19d98446129ede65c05e4b732cc8c58262 commit 8024c4c0b1057d1cd811fc9c3f88f81de9729fcd upstream. We're testing for ->show but calling ->store(). Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Borislav Petkov <bp@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 8024c4c0b1057d1cd811fc9c3f88f81de9729fcd upstream.

We're testing for ->show but calling ->store().

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ath9k: fix double-free bug on beacon generate failure 2013-02-04T00:21:37+00:00 Felix Fietkau nbd@openwrt.org 2013-01-09T15:16:53+00:00 bed37001b6919a386dab95dc42084d755233ea60 commit 1adb2e2b5f85023d17eb4f95386a57029df27c88 upstream. When the next beacon is sent, the ath_buf from the previous run is reused. If getting a new beacon from mac80211 fails, bf->bf_mpdu is not reset, yet the skb is freed, leading to a double-free on the next beacon tx attempt, resulting in a system crash. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 1adb2e2b5f85023d17eb4f95386a57029df27c88 upstream.

When the next beacon is sent, the ath_buf from the previous run is reused.
If getting a new beacon from mac80211 fails, bf->bf_mpdu is not reset, yet
the skb is freed, leading to a double-free on the next beacon tx attempt,
resulting in a system crash.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ath9k_htc: Fix memory leak 2013-02-04T00:21:37+00:00 Sujith Manoharan c_manoha@qca.qualcomm.com 2013-01-09T10:37:48+00:00 a2e1c3918e77ad6a13b43cb04e3cfe19f55d8cd0 commit 0981c3b24ef664f5611008a6e6d0622fac6d892b upstream. SKBs that are allocated in the HTC layer do not have callbacks registered and hence ended up not being freed, Fix this by freeing them properly in the TX completion routine. Reported-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Tested-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 0981c3b24ef664f5611008a6e6d0622fac6d892b upstream.

SKBs that are allocated in the HTC layer do not have callbacks
registered and hence ended up not being freed, Fix this by freeing
them properly in the TX completion routine.

Reported-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Tested-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
can: pch_can: fix invalid error codes 2013-02-04T00:21:37+00:00 Olivier Sobrie olivier@sobrie.be 2013-01-18T08:32:41+00:00 bb40f9f8a41f8c8c793c375f5f3613d99990b705 commit ee50e135aeb048b90fab662e661c58b67341830b upstream. Errors in CAN protocol (location) are reported in data[3] of the can frame instead of data[2]. Signed-off-by: Olivier Sobrie <olivier@sobrie.be> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit ee50e135aeb048b90fab662e661c58b67341830b upstream.

Errors in CAN protocol (location) are reported in data[3] of the can
frame instead of data[2].

Signed-off-by: Olivier Sobrie <olivier@sobrie.be>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
can: ti_hecc: fix invalid error codes 2013-02-04T00:21:36+00:00 Olivier Sobrie olivier@sobrie.be 2013-01-18T08:32:40+00:00 831362319d56e37311b0893ad2dcc4c8f970cbde commit 71088c4bd9b8f8cbffb0e66f2abc14297e4b2ca8 upstream. Errors in CAN protocol (location) are reported in data[3] of the can frame instead of data[2]. Signed-off-by: Olivier Sobrie <olivier@sobrie.be> Cc: Anant Gole <anantgole@ti.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 71088c4bd9b8f8cbffb0e66f2abc14297e4b2ca8 upstream.

Errors in CAN protocol (location) are reported in data[3] of the can
frame instead of data[2].

Signed-off-by: Olivier Sobrie <olivier@sobrie.be>
Cc: Anant Gole <anantgole@ti.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
can: c_can: fix invalid error codes 2013-02-04T00:21:36+00:00 Olivier Sobrie olivier@sobrie.be 2013-01-18T08:32:39+00:00 331f275adb3f494f15e610cf7c3abf324d573d81 commit 6ea45886865c1abb01bb861f7f6bdd5d0f398cb3 upstream. Errors in CAN protocol (location) are reported in data[3] of the can frame instead of data[2]. Signed-off-by: Olivier Sobrie <olivier@sobrie.be> Cc: Bhupesh Sharma <bhupesh.sharma@st.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 6ea45886865c1abb01bb861f7f6bdd5d0f398cb3 upstream.

Errors in CAN protocol (location) are reported in data[3] of the can
frame instead of data[2].

Signed-off-by: Olivier Sobrie <olivier@sobrie.be>
Cc: Bhupesh Sharma <bhupesh.sharma@st.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ioat: Fix DMA memory sync direction correct flag 2013-01-28T04:46:29+00:00 Shuah Khan shuah.khan@hp.com 2012-10-25T16:22:32+00:00 be6ee99fe4380b6b1a50e15c4bdb3cdd719620fc commit ac4989874af56435c308bdde9ad9c837a26f8b23 upstream. ioat does DMA memory sync with DMA_TO_DEVICE direction on a buffer allocated for DMA_FROM_DEVICE dma, resulting in the following warning from dma debug. Fixed the dma_sync_single_for_device() call to use the correct direction. [ 226.288947] WARNING: at lib/dma-debug.c:990 check_sync+0x132/0x550() [ 226.288948] Hardware name: ProLiant DL380p Gen8 [ 226.288951] ioatdma 0000:00:04.0: DMA-API: device driver syncs DMA memory with different direction [device address=0x00000000ffff7000] [size=4096 bytes] [mapped with DMA_FROM_DEVICE] [synced with DMA_TO_DEVICE] [ 226.288953] Modules linked in: iTCO_wdt(+) sb_edac(+) ioatdma(+) microcode serio_raw pcspkr edac_core hpwdt(+) iTCO_vendor_support hpilo(+) dca acpi_power_meter ata_generic pata_acpi sd_mod crc_t10dif ata_piix libata hpsa tg3 netxen_nic(+) sunrpc dm_mirror dm_region_hash dm_log dm_mod [ 226.288967] Pid: 1055, comm: work_for_cpu Tainted: G W 3.3.0-0.20.el7.x86_64 #1 [ 226.288968] Call Trace: [ 226.288974] [<ffffffff810644cf>] warn_slowpath_common+0x7f/0xc0 [ 226.288977] [<ffffffff810645c6>] warn_slowpath_fmt+0x46/0x50 [ 226.288980] [<ffffffff81345502>] check_sync+0x132/0x550 [ 226.288983] [<ffffffff81345c9f>] debug_dma_sync_single_for_device+0x3f/0x50 [ 226.288988] [<ffffffff81661002>] ? wait_for_common+0x72/0x180 [ 226.288995] [<ffffffffa019590f>] ioat_xor_val_self_test+0x3e5/0x832 [ioatdma] [ 226.288999] [<ffffffff811a5739>] ? kfree+0x259/0x270 [ 226.289004] [<ffffffffa0195d77>] ioat3_dma_self_test+0x1b/0x20 [ioatdma] [ 226.289008] [<ffffffffa01952c3>] ioat_probe+0x2f8/0x348 [ioatdma] [ 226.289011] [<ffffffffa0195f51>] ioat3_dma_probe+0x1d5/0x2aa [ioatdma] [ 226.289016] [<ffffffffa0194d12>] ioat_pci_probe+0x139/0x17c [ioatdma] [ 226.289020] [<ffffffff81354b8c>] local_pci_probe+0x5c/0xd0 [ 226.289023] [<ffffffff81083e50>] ? destroy_work_on_stack+0x20/0x20 [ 226.289025] [<ffffffff81083e68>] do_work_for_cpu+0x18/0x30 [ 226.289029] [<ffffffff8108d997>] kthread+0xb7/0xc0 [ 226.289033] [<ffffffff8166cef4>] kernel_thread_helper+0x4/0x10 [ 226.289036] [<ffffffff81662d20>] ? _raw_spin_unlock_irq+0x30/0x50 [ 226.289038] [<ffffffff81663234>] ? retint_restore_args+0x13/0x13 [ 226.289041] [<ffffffff8108d8e0>] ? kthread_worker_fn+0x1a0/0x1a0 [ 226.289044] [<ffffffff8166cef0>] ? gs_change+0x13/0x13 [ 226.289045] ---[ end trace e1618afc7a606089 ]--- [ 226.289047] Mapped at: [ 226.289048] [<ffffffff81345307>] debug_dma_map_page+0x87/0x150 [ 226.289050] [<ffffffffa019653c>] dma_map_page.constprop.18+0x70/0xb34 [ioatdma] [ 226.289054] [<ffffffffa0195702>] ioat_xor_val_self_test+0x1d8/0x832 [ioatdma] [ 226.289058] [<ffffffffa0195d77>] ioat3_dma_self_test+0x1b/0x20 [ioatdma] [ 226.289061] [<ffffffffa01952c3>] ioat_probe+0x2f8/0x348 [ioatdma] Signed-off-by: Shuah Khan <shuah.khan@hp.com> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit ac4989874af56435c308bdde9ad9c837a26f8b23 upstream.

ioat does DMA memory sync with DMA_TO_DEVICE direction on a buffer allocated
for DMA_FROM_DEVICE dma, resulting in the following warning from dma debug.
Fixed the dma_sync_single_for_device() call to use the correct direction.

[  226.288947] WARNING: at lib/dma-debug.c:990 check_sync+0x132/0x550()
[  226.288948] Hardware name: ProLiant DL380p Gen8
[  226.288951] ioatdma 0000:00:04.0: DMA-API: device driver syncs DMA memory with different direction [device address=0x00000000ffff7000] [size=4096 bytes] [mapped with DMA_FROM_DEVICE] [synced with DMA_TO_DEVICE]
[  226.288953] Modules linked in: iTCO_wdt(+) sb_edac(+) ioatdma(+) microcode serio_raw pcspkr edac_core hpwdt(+) iTCO_vendor_support hpilo(+) dca acpi_power_meter ata_generic pata_acpi sd_mod crc_t10dif ata_piix libata hpsa tg3 netxen_nic(+) sunrpc dm_mirror dm_region_hash dm_log dm_mod
[  226.288967] Pid: 1055, comm: work_for_cpu Tainted: G        W    3.3.0-0.20.el7.x86_64 #1
[  226.288968] Call Trace:
[  226.288974]  [<ffffffff810644cf>] warn_slowpath_common+0x7f/0xc0
[  226.288977]  [<ffffffff810645c6>] warn_slowpath_fmt+0x46/0x50
[  226.288980]  [<ffffffff81345502>] check_sync+0x132/0x550
[  226.288983]  [<ffffffff81345c9f>] debug_dma_sync_single_for_device+0x3f/0x50
[  226.288988]  [<ffffffff81661002>] ? wait_for_common+0x72/0x180
[  226.288995]  [<ffffffffa019590f>] ioat_xor_val_self_test+0x3e5/0x832 [ioatdma]
[  226.288999]  [<ffffffff811a5739>] ? kfree+0x259/0x270
[  226.289004]  [<ffffffffa0195d77>] ioat3_dma_self_test+0x1b/0x20 [ioatdma]
[  226.289008]  [<ffffffffa01952c3>] ioat_probe+0x2f8/0x348 [ioatdma]
[  226.289011]  [<ffffffffa0195f51>] ioat3_dma_probe+0x1d5/0x2aa [ioatdma]
[  226.289016]  [<ffffffffa0194d12>] ioat_pci_probe+0x139/0x17c [ioatdma]
[  226.289020]  [<ffffffff81354b8c>] local_pci_probe+0x5c/0xd0
[  226.289023]  [<ffffffff81083e50>] ? destroy_work_on_stack+0x20/0x20
[  226.289025]  [<ffffffff81083e68>] do_work_for_cpu+0x18/0x30
[  226.289029]  [<ffffffff8108d997>] kthread+0xb7/0xc0
[  226.289033]  [<ffffffff8166cef4>] kernel_thread_helper+0x4/0x10
[  226.289036]  [<ffffffff81662d20>] ? _raw_spin_unlock_irq+0x30/0x50
[  226.289038]  [<ffffffff81663234>] ? retint_restore_args+0x13/0x13
[  226.289041]  [<ffffffff8108d8e0>] ? kthread_worker_fn+0x1a0/0x1a0
[  226.289044]  [<ffffffff8166cef0>] ? gs_change+0x13/0x13
[  226.289045] ---[ end trace e1618afc7a606089 ]---
[  226.289047] Mapped at:
[  226.289048]  [<ffffffff81345307>] debug_dma_map_page+0x87/0x150
[  226.289050]  [<ffffffffa019653c>] dma_map_page.constprop.18+0x70/0xb34 [ioatdma]
[  226.289054]  [<ffffffffa0195702>] ioat_xor_val_self_test+0x1d8/0x832 [ioatdma]
[  226.289058]  [<ffffffffa0195d77>] ioat3_dma_self_test+0x1b/0x20 [ioatdma]
[  226.289061]  [<ffffffffa01952c3>] ioat_probe+0x2f8/0x348 [ioatdma]

Signed-off-by: Shuah Khan <shuah.khan@hp.com>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ACPI / cpuidle: Fix NULL pointer issues when cpuidle is disabled 2013-01-28T04:46:29+00:00 Konrad Rzeszutek Wilk konrad.wilk@oracle.com 2013-01-16T22:40:07+00:00 a94e7cf81096fab2a8625e1ffaae0853a80e77b2 commit b88a634a903d9670aa5f2f785aa890628ce0dece upstream. If cpuidle is disabled, that means that: per_cpu(acpi_cpuidle_device, pr->id) is set to NULL as the acpi_processor_power_init ends up failing at retval = cpuidle_register_driver(&acpi_idle_driver) (in acpi_processor_power_init) and never sets the per_cpu idle device. So when acpi_processor_hotplug on CPU online notification tries to reference said device it crashes: cpu 3 spinlock event irq 62 BUG: unable to handle kernel NULL pointer dereference at 0000000000000004 IP: [<ffffffff81381013>] acpi_processor_setup_cpuidle_cx+0x3f/0x105 PGD a259b067 PUD ab38b067 PMD 0 Oops: 0002 [#1] SMP odules linked in: dm_multipath dm_mod xen_evtchn iscsi_boot_sysfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi libcrc32c crc32c nouveau mxm_wmi wmi radeon ttm sg sr_mod sd_mod cdrom ata_generic ata_piix libata crc32c_intel scsi_mod atl1c i915 fbcon tileblit font bitblit softcursor drm_kms_helper video xen_blkfront xen_netfront fb_sys_fops sysimgblt sysfillrect syscopyarea xenfs xen_privcmd mperf CPU 1 Pid: 3047, comm: bash Not tainted 3.8.0-rc3upstream-00250-g165c029 #1 MSI MS-7680/H61M-P23 (MS-7680) RIP: e030:[<ffffffff81381013>] [<ffffffff81381013>] acpi_processor_setup_cpuidle_cx+0x3f/0x105 RSP: e02b:ffff88001742dca8 EFLAGS: 00010202 RAX: 0000000000010be9 RBX: ffff8800a0a61800 RCX: ffff880105380000 RDX: 0000000000000003 RSI: 0000000000000200 RDI: ffff8800a0a61800 RBP: ffff88001742dce8 R08: ffffffff81812360 R09: 0000000000000200 R10: aaaaaaaaaaaaaaaa R11: 0000000000000001 R12: ffff8800a0a61800 R13: 00000000ffffff01 R14: 0000000000000000 R15: ffffffff81a907a0 FS: 00007fd6942f7700(0000) GS:ffff880105280000(0000) knlGS:0000000000000000 CS: e033 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000004 CR3: 00000000a6773000 CR4: 0000000000042660 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process bash (pid: 3047, threadinfo ffff88001742c000, task ffff880017944000) Stack: 0000000000000150 ffff880100f59e00 ffff88001742dcd8 ffff8800a0a61800 0000000000000000 00000000ffffff01 0000000000000000 ffffffff81a907a0 ffff88001742dd18 ffffffff813815b1 ffff88001742dd08 ffffffff810ae336 Call Trace: [<ffffffff813815b1>] acpi_processor_hotplug+0x7c/0x9f [<ffffffff810ae336>] ? schedule_delayed_work_on+0x16/0x20 [<ffffffff8137ee8f>] acpi_cpu_soft_notify+0x90/0xca [<ffffffff8166023d>] notifier_call_chain+0x4d/0x70 [<ffffffff810bc369>] __raw_notifier_call_chain+0x9/0x10 [<ffffffff81094a4b>] __cpu_notify+0x1b/0x30 [<ffffffff81652cf7>] _cpu_up+0x103/0x14b [<ffffffff81652e18>] cpu_up+0xd9/0xec [<ffffffff8164a254>] store_online+0x94/0xd0 [<ffffffff814122fb>] dev_attr_store+0x1b/0x20 [<ffffffff81216404>] sysfs_write_file+0xf4/0x170 This patch fixes it. Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit b88a634a903d9670aa5f2f785aa890628ce0dece upstream.

If cpuidle is disabled, that means that:

	per_cpu(acpi_cpuidle_device, pr->id)

is set to NULL as the acpi_processor_power_init ends up failing at

	 retval = cpuidle_register_driver(&acpi_idle_driver)

(in acpi_processor_power_init) and never sets the per_cpu idle
device.  So when acpi_processor_hotplug on CPU online notification
tries to reference said device it crashes:

cpu 3 spinlock event irq 62
BUG: unable to handle kernel NULL pointer dereference at 0000000000000004
IP: [<ffffffff81381013>] acpi_processor_setup_cpuidle_cx+0x3f/0x105
PGD a259b067 PUD ab38b067 PMD 0
Oops: 0002 [#1] SMP
odules linked in: dm_multipath dm_mod xen_evtchn iscsi_boot_sysfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi libcrc32c crc32c nouveau mxm_wmi wmi radeon ttm sg sr_mod sd_mod cdrom ata_generic ata_piix libata crc32c_intel scsi_mod atl1c i915 fbcon tileblit font bitblit softcursor drm_kms_helper video xen_blkfront xen_netfront fb_sys_fops sysimgblt sysfillrect syscopyarea xenfs xen_privcmd mperf
CPU 1
Pid: 3047, comm: bash Not tainted 3.8.0-rc3upstream-00250-g165c029 #1 MSI MS-7680/H61M-P23 (MS-7680)
RIP: e030:[<ffffffff81381013>]  [<ffffffff81381013>] acpi_processor_setup_cpuidle_cx+0x3f/0x105
RSP: e02b:ffff88001742dca8  EFLAGS: 00010202
RAX: 0000000000010be9 RBX: ffff8800a0a61800 RCX: ffff880105380000
RDX: 0000000000000003 RSI: 0000000000000200 RDI: ffff8800a0a61800
RBP: ffff88001742dce8 R08: ffffffff81812360 R09: 0000000000000200
R10: aaaaaaaaaaaaaaaa R11: 0000000000000001 R12: ffff8800a0a61800
R13: 00000000ffffff01 R14: 0000000000000000 R15: ffffffff81a907a0
FS:  00007fd6942f7700(0000) GS:ffff880105280000(0000) knlGS:0000000000000000
CS:  e033 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000004 CR3: 00000000a6773000 CR4: 0000000000042660
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process bash (pid: 3047, threadinfo ffff88001742c000, task ffff880017944000)
Stack:
 0000000000000150 ffff880100f59e00 ffff88001742dcd8 ffff8800a0a61800
 0000000000000000 00000000ffffff01 0000000000000000 ffffffff81a907a0
 ffff88001742dd18 ffffffff813815b1 ffff88001742dd08 ffffffff810ae336
Call Trace:
 [<ffffffff813815b1>] acpi_processor_hotplug+0x7c/0x9f
 [<ffffffff810ae336>] ? schedule_delayed_work_on+0x16/0x20
 [<ffffffff8137ee8f>] acpi_cpu_soft_notify+0x90/0xca
 [<ffffffff8166023d>] notifier_call_chain+0x4d/0x70
 [<ffffffff810bc369>] __raw_notifier_call_chain+0x9/0x10
 [<ffffffff81094a4b>] __cpu_notify+0x1b/0x30
 [<ffffffff81652cf7>] _cpu_up+0x103/0x14b
 [<ffffffff81652e18>] cpu_up+0xd9/0xec
 [<ffffffff8164a254>] store_online+0x94/0xd0
 [<ffffffff814122fb>] dev_attr_store+0x1b/0x20
 [<ffffffff81216404>] sysfs_write_file+0xf4/0x170

This patch fixes it.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
SGI-XP: handle non-fatal traps 2013-01-28T04:46:29+00:00 Robin Holt holt@sgi.com 2012-12-20T23:05:50+00:00 06cce029daed3ce1d98164b921bb3a826ad2a12a commit 891348ca0f66206f1dc0e30d63757e3df1ae2d15 upstream. We found a user code which was raising a divide-by-zero trap. That trap would lead to XPC connections between system-partitions being torn down due to the die_chain notifier callouts it received. This also revealed a different issue where multiple callers into xpc_die_deactivate() would all attempt to do the disconnect in parallel which would sometimes lock up but often overwhelm the console on very large machines as each would print at least one line of output at the end of the deactivate. I reviewed all the users of the die_chain notifier and changed the code to ignore the notifier callouts for reasons which will not actually lead to a system to continue on to call die(). [akpm@linux-foundation.org: fix ia64] Signed-off-by: Robin Holt <holt@sgi.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 891348ca0f66206f1dc0e30d63757e3df1ae2d15 upstream.

We found a user code which was raising a divide-by-zero trap.  That trap
would lead to XPC connections between system-partitions being torn down
due to the die_chain notifier callouts it received.

This also revealed a different issue where multiple callers into
xpc_die_deactivate() would all attempt to do the disconnect in parallel
which would sometimes lock up but often overwhelm the console on very
large machines as each would print at least one line of output at the
end of the deactivate.

I reviewed all the users of the die_chain notifier and changed the code
to ignore the notifier callouts for reasons which will not actually lead
to a system to continue on to call die().

[akpm@linux-foundation.org: fix ia64]
Signed-off-by: Robin Holt <holt@sgi.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ahci: Add identifiers for ASM106x devices 2013-01-28T04:46:29+00:00 Alan Cox alan@linux.intel.com 2012-09-04T15:25:25+00:00 d87f5a89f5e2d2ce9e3c1b21bd2debe2130cbc90 commit 7b4f6ecacb14f384adc1a5a67ad95eb082c02bd1 upstream. They don't always appear as AHCI class devices but instead as IDE class. Based on an initial patch by Hiroaki Nito Resolves-bug: https://bugzilla.kernel.org/show_bug.cgi?id=42804 Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com> Signed-off-by: Abdallah Chatila <abdallah.chatila@ericsson.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 7b4f6ecacb14f384adc1a5a67ad95eb082c02bd1 upstream.

They don't always appear as AHCI class devices but instead as IDE class.

Based on an initial patch by Hiroaki Nito

Resolves-bug: https://bugzilla.kernel.org/show_bug.cgi?id=42804
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Abdallah Chatila <abdallah.chatila@ericsson.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>