I am seeing a regression in today's (Oct 5) kernel - 2 WARNINGS, and a
BUG below that seems to occur upon resuming from S3.
I can start a bisection with 3.6 - but wanted to check to see if
anyone else is also experiencing this failure...
I'm not sure that it matters in this case, but this is running as a
Xen dom0 pvops kernel.
Regards
Ben Guthro
[ 1554.684622] ------------[ cut here ]------------
[ 1554.684634] WARNING: at
/data/home/bguthro/dev/unstable/linux/fs/sysfs/dir.c:536
sysfs_add_one+0xc0/0xf0()
[ 1554.684636] Hardware name: 2765T6U
[ 1554.684638] sysfs: cannot create duplicate filename '/devices/pnp0/00:0c/ppi'
[ 1554.684640] Modules linked in: tpm_tis(+) tpm tpm_bios ehci_hcd
ebtable_filter ebtables ip_tables x_tables zram(C) zsmalloc(C) bridge
stp llc snd_hda_codec_conexant arc4 i915 snd_hda_intel iwldvm
snd_hda_codec mac80211 pcmcia hid_generic drm_kms_helper yenta_socket
snd_hwdep snd_pcm iwlwifi drm pcmcia_rsrc snd_timer pcmcia_core usbhid
thinkpad_acpi coretemp snd_page_alloc cfg80211 psmouse hid
i2c_algo_bit intel_agp serio_raw microcode intel_gtt snd soundcore
video nvram ahci libahci e1000e [last unloaded: tpm_bios]
[ 1554.684681] Pid: 3492, comm: modprobe Tainted: G C 3.6.0-orc #3
[ 1554.684683] Call Trace:
[ 1554.684691] [<ffffffff810539cf>] warn_slowpath_common+0x7f/0xc0
[ 1554.684695] [<ffffffff81053ac6>] warn_slowpath_fmt+0x46/0x50
[ 1554.684699] [<ffffffff811d0bb0>] sysfs_add_one+0xc0/0xf0
[ 1554.684702] [<ffffffff811d0d9c>] create_dir+0x7c/0xd0
[ 1554.684706] [<ffffffff811d1116>] sysfs_create_dir+0x86/0xe0
[ 1554.684712] [<ffffffff812bffec>] kobject_add_internal+0x9c/0x210
[ 1554.684716] [<ffffffff812c05e7>] kobject_add+0x67/0xc0
[ 1554.684720] [<ffffffff812c090e>] kobject_create_and_add+0x3e/0x80
[ 1554.684725] [<ffffffffa00d7898>] sys_add_ppi+0x18/0x40 [tpm_bios]
[ 1554.684731] [<ffffffffa0100aee>] tpm_register_hardware+0x22e/0x3c0 [tpm]
[ 1554.684736] [<ffffffffa0109b7a>] tpm_tis_init+0x44/0x601 [tpm_tis]
[ 1554.684741] [<ffffffffa010a225>] tpm_tis_pnp_init+0xee/0x10d [tpm_tis]
[ 1554.684746] [<ffffffffa010a137>] ? tpm_tis_init+0x601/0x601 [tpm_tis]
[ 1554.684751] [<ffffffff81348180>] pnp_device_probe+0x70/0xf0
[ 1554.684757] [<ffffffff813a6f4a>] ? driver_sysfs_add+0x7a/0xb0
[ 1554.684761] [<ffffffff813a722b>] driver_probe_device+0x7b/0x240
[ 1554.684764] [<ffffffff813a749b>] __driver_attach+0xab/0xb0
[ 1554.684768] [<ffffffff813a73f0>] ? driver_probe_device+0x240/0x240
[ 1554.684772] [<ffffffff813a5646>] bus_for_each_dev+0x56/0x90
[ 1554.684776] [<ffffffff813a6d5e>] driver_attach+0x1e/0x20
[ 1554.684779] [<ffffffff813a68d0>] bus_add_driver+0x190/0x290
[ 1554.684784] [<ffffffffa010d000>] ? 0xffffffffa010cfff
[ 1554.684787] [<ffffffff813a79fa>] driver_register+0x7a/0x160
[ 1554.684791] [<ffffffffa010d000>] ? 0xffffffffa010cfff
[ 1554.684795] [<ffffffff81347eb1>] pnp_register_driver+0x21/0x30
[ 1554.684800] [<ffffffffa010d01d>] init_tis+0x1d/0xc5 [tpm_tis]
[ 1554.684805] [<ffffffff8107d6f3>] ? __blocking_notifier_call_chain+0x63/0x80
[ 1554.684809] [<ffffffff8100203f>] do_one_initcall+0x3f/0x170
[ 1554.684814] [<ffffffff810b562f>] sys_init_module+0x8f/0x200
[ 1554.684819] [<ffffffff815a46e9>] system_call_fastpath+0x16/0x1b
[ 1554.684822] ---[ end trace b394e16efa725e57 ]---
[ 1554.684825] ------------[ cut here ]------------
[ 1554.684829] WARNING: at
/data/home/bguthro/dev/unstable/linux/lib/kobject.c:196
kobject_add_internal+0x1f4/0x210()
[ 1554.684830] Hardware name: 2765T6U
[ 1554.684832] kobject_add_internal failed for ppi with -EEXIST, don't
try to register things with the same name in the same directory.
[ 1554.684834] Modules linked in: tpm_tis(+) tpm tpm_bios ehci_hcd
ebtable_filter ebtables ip_tables x_tables zram(C) zsmalloc(C) bridge
stp llc snd_hda_codec_conexant arc4 i915 snd_hda_intel iwldvm
snd_hda_codec mac80211 pcmcia hid_generic drm_kms_helper yenta_socket
snd_hwdep snd_pcm iwlwifi drm pcmcia_rsrc snd_timer pcmcia_core usbhid
thinkpad_acpi coretemp snd_page_alloc cfg80211 psmouse hid
i2c_algo_bit intel_agp serio_raw microcode intel_gtt snd soundcore
video nvram ahci libahci e1000e [last unloaded: tpm_bios]
[ 1554.684870] Pid: 3492, comm: modprobe Tainted: G WC 3.6.0-orc #3
[ 1554.684872] Call Trace:
[ 1554.684876] [<ffffffff810539cf>] warn_slowpath_common+0x7f/0xc0
[ 1554.684880] [<ffffffff81053ac6>] warn_slowpath_fmt+0x46/0x50
[ 1554.684884] [<ffffffff811d0431>] ? release_sysfs_dirent+0x61/0xe0
[ 1554.684888] [<ffffffff812c0144>] kobject_add_internal+0x1f4/0x210
[ 1554.684892] [<ffffffff812c05e7>] kobject_add+0x67/0xc0
[ 1554.684897] [<ffffffff812c090e>] kobject_create_and_add+0x3e/0x80
[ 1554.684901] [<ffffffffa00d7898>] sys_add_ppi+0x18/0x40 [tpm_bios]
[ 1554.684906] [<ffffffffa0100aee>] tpm_register_hardware+0x22e/0x3c0 [tpm]
[ 1554.684911] [<ffffffffa0109b7a>] tpm_tis_init+0x44/0x601 [tpm_tis]
[ 1554.684916] [<ffffffffa010a225>] tpm_tis_pnp_init+0xee/0x10d [tpm_tis]
[ 1554.684921] [<ffffffffa010a137>] ? tpm_tis_init+0x601/0x601 [tpm_tis]
[ 1554.684925] [<ffffffff81348180>] pnp_device_probe+0x70/0xf0
[ 1554.684929] [<ffffffff813a6f4a>] ? driver_sysfs_add+0x7a/0xb0
[ 1554.684933] [<ffffffff813a722b>] driver_probe_device+0x7b/0x240
[ 1554.684936] [<ffffffff813a749b>] __driver_attach+0xab/0xb0
[ 1554.684940] [<ffffffff813a73f0>] ? driver_probe_device+0x240/0x240
[ 1554.684944] [<ffffffff813a5646>] bus_for_each_dev+0x56/0x90
[ 1554.684947] [<ffffffff813a6d5e>] driver_attach+0x1e/0x20
[ 1554.684951] [<ffffffff813a68d0>] bus_add_driver+0x190/0x290
[ 1554.684955] [<ffffffffa010d000>] ? 0xffffffffa010cfff
[ 1554.684958] [<ffffffff813a79fa>] driver_register+0x7a/0x160
[ 1554.684962] [<ffffffffa010d000>] ? 0xffffffffa010cfff
[ 1554.684966] [<ffffffff81347eb1>] pnp_register_driver+0x21/0x30
[ 1554.684970] [<ffffffffa010d01d>] init_tis+0x1d/0xc5 [tpm_tis]
[ 1554.684974] [<ffffffff8107d6f3>] ? __blocking_notifier_call_chain+0x63/0x80
[ 1554.684978] [<ffffffff8100203f>] do_one_initcall+0x3f/0x170
[ 1554.684981] [<ffffffff810b562f>] sys_init_module+0x8f/0x200
[ 1554.684985] [<ffffffff815a46e9>] system_call_fastpath+0x16/0x1b
[ 1554.684987] ---[ end trace b394e16efa725e58 ]---
[ 1554.684990] kobject_create_and_add: kobject_add error: -17
[ 1554.685002] ------------[ cut here ]------------
[ 1554.685040] kernel BUG at
/data/home/bguthro/dev/unstable/linux/fs/sysfs/group.c:65!
[ 1554.685086] invalid opcode: 0000 [#1] SMP
[ 1554.685118] Modules linked in: tpm_tis(+) tpm tpm_bios ehci_hcd
ebtable_filter ebtables ip_tables x_tables zram(C) zsmalloc(C) bridge
stp llc snd_hda_codec_conexant arc4 i915 snd_hda_intel iwldvm
snd_hda_codec mac80211 pcmcia hid_generic drm_kms_helper yenta_socket
snd_hwdep snd_pcm iwlwifi drm pcmcia_rsrc snd_timer pcmcia_core usbhid
thinkpad_acpi coretemp snd_page_alloc cfg80211 psmouse hid
i2c_algo_bit intel_agp serio_raw microcode intel_gtt snd soundcore
video nvram ahci libahci e1000e [last unloaded: tpm_bios]
[ 1554.685524] CPU 0
[ 1554.685540] Pid: 3492, comm: modprobe Tainted: G WC
3.6.0-orc #3 LENOVO 2765T6U/2765T6U
[ 1554.685593] RIP: e030:[<ffffffff811d29f9>] [<ffffffff811d29f9>]
internal_create_group+0x1e9/0x210
[ 1554.686670] RSP: e02b:ffff880002a4fbd8 EFLAGS: 00010246
[ 1554.686706] RAX: 0000000000000000 RBX: ffff880002ecc000 RCX: 000000000000a9c8
[ 1554.686747] RDX: ffffffffa00d8ec0 RSI: 0000000000000000 RDI: 0000000000000000
[ 1554.686788] RBP: ffff880002a4fc28 R08: 0000000000016640 R09: ffffea00009d7000
[ 1554.686829] R10: ffffffff812bfec9 R11: 6464615f646e615f R12: ffff88002871cc10
[ 1554.686870] R13: ffff880002ecc220 R14: ffffffffa00d8ec0 R15: 0000000000000000
[ 1554.686915] FS: 00007f33000ba700(0000) GS:ffff88002dc00000(0000)
knlGS:0000000000000000
[ 1554.686963] CS: e033 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 1554.686996] CR2: 00007fac43cd0000 CR3: 000000000298a000 CR4: 0000000000002660
[ 1554.687038] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1554.687079] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 1554.687121] Process modprobe (pid: 3492, threadinfo
ffff880002a4e000, task ffff880025c52d20)
[ 1554.687170] Stack:
[ 1554.687184] ffffffffa00d8b38 0000000000000000 ffff880002a4fc08
ffffffff812bfd7c
[ 1554.687238] 000000005b2d2d2d ffff880002ecc000 ffff88002871cc10
ffff880002ecc220
[ 1554.687292] ffff8800275c0e90 ffff880002ecc130 ffff880002a4fc38
ffffffff811d2a53
[ 1554.687345] Call Trace:
[ 1554.687366] [<ffffffff812bfd7c>] ? kobject_put+0x2c/0x60
[ 1554.687400] [<ffffffff811d2a53>] sysfs_create_group+0x13/0x20
[ 1554.687439] [<ffffffffa00d78a7>] sys_add_ppi+0x27/0x40 [tpm_bios]
[ 1554.687480] [<ffffffffa0100aee>] tpm_register_hardware+0x22e/0x3c0 [tpm]
[ 1554.687523] [<ffffffffa0109b7a>] tpm_tis_init+0x44/0x601 [tpm_tis]
[ 1554.687562] [<ffffffffa010a225>] tpm_tis_pnp_init+0xee/0x10d [tpm_tis]
[ 1554.687604] [<ffffffffa010a137>] ? tpm_tis_init+0x601/0x601 [tpm_tis]
[ 1554.687645] [<ffffffff81348180>] pnp_device_probe+0x70/0xf0
[ 1554.687681] [<ffffffff813a6f4a>] ? driver_sysfs_add+0x7a/0xb0
[ 1554.687718] [<ffffffff813a722b>] driver_probe_device+0x7b/0x240
[ 1554.687756] [<ffffffff813a749b>] __driver_attach+0xab/0xb0
[ 1554.687795] [<ffffffff813a73f0>] ? driver_probe_device+0x240/0x240
[ 1554.687832] [<ffffffff813a5646>] bus_for_each_dev+0x56/0x90
[ 1554.687868] [<ffffffff813a6d5e>] driver_attach+0x1e/0x20
[ 1554.687902] [<ffffffff813a68d0>] bus_add_driver+0x190/0x290
[ 1554.687939] [<ffffffffa010d000>] ? 0xffffffffa010cfff
[ 1554.687973] [<ffffffff813a79fa>] driver_register+0x7a/0x160
[ 1554.688009] [<ffffffffa010d000>] ? 0xffffffffa010cfff
[ 1554.688042] [<ffffffff81347eb1>] pnp_register_driver+0x21/0x30
[ 1554.688080] [<ffffffffa010d01d>] init_tis+0x1d/0xc5 [tpm_tis]
[ 1554.688117] [<ffffffff8107d6f3>] ? __blocking_notifier_call_chain+0x63/0x80
[ 1554.688161] [<ffffffff8100203f>] do_one_initcall+0x3f/0x170
[ 1554.688197] [<ffffffff810b562f>] sys_init_module+0x8f/0x200
[ 1554.688233] [<ffffffff815a46e9>] system_call_fastpath+0x16/0x1b
[ 1554.688269] Code: 45 b0 0f 84 60 ff ff ff 48 8b 7d c8 89 45 b0 e8
8e e7 ff ff 4c 8b 6d c8 8b 45 b0 e9 48 ff ff ff 48 83 7f 30 00 0f 85
57 fe ff ff <0f> 0b be c3 00 00 00 48 c7 c7 f8 7e 7e 81 e8 04 10 e8 ff
e9 80
[ 1554.688576] RIP [<ffffffff811d29f9>] internal_create_group+0x1e9/0x210
[ 1554.688621] RSP <ffff880002a4fbd8>
[ 1554.704039] ---[ end trace b394e16efa725e59 ]---
Ben Guthro <[email protected]> writes:
> I am seeing a regression in today's (Oct 5) kernel - 2 WARNINGS, and a
> BUG below that seems to occur upon resuming from S3.
>
> I can start a bisection with 3.6 - but wanted to check to see if
> anyone else is also experiencing this failure...
I took a quick look and this is a deterministic failure. The same
file is being added to sysfs twice.
Since the routine causing this failure appears to be sys_add_ppi I
expect the commit that added this failure mode is the commit below.
Xiaoyan Zhang, Kent Yoder can you guys look at this see why the tpm
code is adding itself multiple times into sysfs?
Thanks,
Eric
commit f84fdff0fdcda7e509ce530e0ee612233a2104fb
Author: Xiaoyan Zhang <[email protected]>
Date: Wed Aug 22 18:47:22 2012 +0800
driver: add PPI support in tpm driver
The Physical Presence Interface enables the OS and the BIOS to cooperate and
provides a simple and straightforward platform user experience for
administering the TPM without sacrificing security.
V2: separate the patch out in a separate source file,
add #ifdef CONFIG_ACPI so it compiles out on ppc,
use standard error instead of ACPI error as return code of show/store fns.
V3: move #ifdef CONFIG_ACPI from .c file to .h file.
V4: move tpm_ppi code from tpm module to tpm_bios module.
V5: modify sys_add_ppi() so that ppi_attr_grp doesn't need to be exported
Signed-off-by: Xiaoyan Zhang <[email protected]>
Signed-off-by: Kent Yoder <[email protected]>
> I'm not sure that it matters in this case, but this is running as a
> Xen dom0 pvops kernel.
>
> Regards
> Ben Guthro
>
>
> [ 1554.684622] ------------[ cut here ]------------
> [ 1554.684634] WARNING: at
> /data/home/bguthro/dev/unstable/linux/fs/sysfs/dir.c:536
> sysfs_add_one+0xc0/0xf0()
> [ 1554.684636] Hardware name: 2765T6U
> [ 1554.684638] sysfs: cannot create duplicate filename '/devices/pnp0/00:0c/ppi'
> [ 1554.684640] Modules linked in: tpm_tis(+) tpm tpm_bios ehci_hcd
> ebtable_filter ebtables ip_tables x_tables zram(C) zsmalloc(C) bridge
> stp llc snd_hda_codec_conexant arc4 i915 snd_hda_intel iwldvm
> snd_hda_codec mac80211 pcmcia hid_generic drm_kms_helper yenta_socket
> snd_hwdep snd_pcm iwlwifi drm pcmcia_rsrc snd_timer pcmcia_core usbhid
> thinkpad_acpi coretemp snd_page_alloc cfg80211 psmouse hid
> i2c_algo_bit intel_agp serio_raw microcode intel_gtt snd soundcore
> video nvram ahci libahci e1000e [last unloaded: tpm_bios]
> [ 1554.684681] Pid: 3492, comm: modprobe Tainted: G C 3.6.0-orc #3
> [ 1554.684683] Call Trace:
> [ 1554.684691] [<ffffffff810539cf>] warn_slowpath_common+0x7f/0xc0
> [ 1554.684695] [<ffffffff81053ac6>] warn_slowpath_fmt+0x46/0x50
> [ 1554.684699] [<ffffffff811d0bb0>] sysfs_add_one+0xc0/0xf0
> [ 1554.684702] [<ffffffff811d0d9c>] create_dir+0x7c/0xd0
> [ 1554.684706] [<ffffffff811d1116>] sysfs_create_dir+0x86/0xe0
> [ 1554.684712] [<ffffffff812bffec>] kobject_add_internal+0x9c/0x210
> [ 1554.684716] [<ffffffff812c05e7>] kobject_add+0x67/0xc0
> [ 1554.684720] [<ffffffff812c090e>] kobject_create_and_add+0x3e/0x80
> [ 1554.684725] [<ffffffffa00d7898>] sys_add_ppi+0x18/0x40 [tpm_bios]
> [ 1554.684731] [<ffffffffa0100aee>] tpm_register_hardware+0x22e/0x3c0 [tpm]
> [ 1554.684736] [<ffffffffa0109b7a>] tpm_tis_init+0x44/0x601 [tpm_tis]
> [ 1554.684741] [<ffffffffa010a225>] tpm_tis_pnp_init+0xee/0x10d [tpm_tis]
> [ 1554.684746] [<ffffffffa010a137>] ? tpm_tis_init+0x601/0x601 [tpm_tis]
> [ 1554.684751] [<ffffffff81348180>] pnp_device_probe+0x70/0xf0
> [ 1554.684757] [<ffffffff813a6f4a>] ? driver_sysfs_add+0x7a/0xb0
> [ 1554.684761] [<ffffffff813a722b>] driver_probe_device+0x7b/0x240
> [ 1554.684764] [<ffffffff813a749b>] __driver_attach+0xab/0xb0
> [ 1554.684768] [<ffffffff813a73f0>] ? driver_probe_device+0x240/0x240
> [ 1554.684772] [<ffffffff813a5646>] bus_for_each_dev+0x56/0x90
> [ 1554.684776] [<ffffffff813a6d5e>] driver_attach+0x1e/0x20
> [ 1554.684779] [<ffffffff813a68d0>] bus_add_driver+0x190/0x290
> [ 1554.684784] [<ffffffffa010d000>] ? 0xffffffffa010cfff
> [ 1554.684787] [<ffffffff813a79fa>] driver_register+0x7a/0x160
> [ 1554.684791] [<ffffffffa010d000>] ? 0xffffffffa010cfff
> [ 1554.684795] [<ffffffff81347eb1>] pnp_register_driver+0x21/0x30
> [ 1554.684800] [<ffffffffa010d01d>] init_tis+0x1d/0xc5 [tpm_tis]
> [ 1554.684805] [<ffffffff8107d6f3>] ? __blocking_notifier_call_chain+0x63/0x80
> [ 1554.684809] [<ffffffff8100203f>] do_one_initcall+0x3f/0x170
> [ 1554.684814] [<ffffffff810b562f>] sys_init_module+0x8f/0x200
> [ 1554.684819] [<ffffffff815a46e9>] system_call_fastpath+0x16/0x1b
> [ 1554.684822] ---[ end trace b394e16efa725e57 ]---
> [ 1554.684825] ------------[ cut here ]------------
> [ 1554.684829] WARNING: at
> /data/home/bguthro/dev/unstable/linux/lib/kobject.c:196
> kobject_add_internal+0x1f4/0x210()
> [ 1554.684830] Hardware name: 2765T6U
> [ 1554.684832] kobject_add_internal failed for ppi with -EEXIST, don't
> try to register things with the same name in the same directory.
> [ 1554.684834] Modules linked in: tpm_tis(+) tpm tpm_bios ehci_hcd
> ebtable_filter ebtables ip_tables x_tables zram(C) zsmalloc(C) bridge
> stp llc snd_hda_codec_conexant arc4 i915 snd_hda_intel iwldvm
> snd_hda_codec mac80211 pcmcia hid_generic drm_kms_helper yenta_socket
> snd_hwdep snd_pcm iwlwifi drm pcmcia_rsrc snd_timer pcmcia_core usbhid
> thinkpad_acpi coretemp snd_page_alloc cfg80211 psmouse hid
> i2c_algo_bit intel_agp serio_raw microcode intel_gtt snd soundcore
> video nvram ahci libahci e1000e [last unloaded: tpm_bios]
> [ 1554.684870] Pid: 3492, comm: modprobe Tainted: G WC 3.6.0-orc #3
> [ 1554.684872] Call Trace:
> [ 1554.684876] [<ffffffff810539cf>] warn_slowpath_common+0x7f/0xc0
> [ 1554.684880] [<ffffffff81053ac6>] warn_slowpath_fmt+0x46/0x50
> [ 1554.684884] [<ffffffff811d0431>] ? release_sysfs_dirent+0x61/0xe0
> [ 1554.684888] [<ffffffff812c0144>] kobject_add_internal+0x1f4/0x210
> [ 1554.684892] [<ffffffff812c05e7>] kobject_add+0x67/0xc0
> [ 1554.684897] [<ffffffff812c090e>] kobject_create_and_add+0x3e/0x80
> [ 1554.684901] [<ffffffffa00d7898>] sys_add_ppi+0x18/0x40 [tpm_bios]
> [ 1554.684906] [<ffffffffa0100aee>] tpm_register_hardware+0x22e/0x3c0 [tpm]
> [ 1554.684911] [<ffffffffa0109b7a>] tpm_tis_init+0x44/0x601 [tpm_tis]
> [ 1554.684916] [<ffffffffa010a225>] tpm_tis_pnp_init+0xee/0x10d [tpm_tis]
> [ 1554.684921] [<ffffffffa010a137>] ? tpm_tis_init+0x601/0x601 [tpm_tis]
> [ 1554.684925] [<ffffffff81348180>] pnp_device_probe+0x70/0xf0
> [ 1554.684929] [<ffffffff813a6f4a>] ? driver_sysfs_add+0x7a/0xb0
> [ 1554.684933] [<ffffffff813a722b>] driver_probe_device+0x7b/0x240
> [ 1554.684936] [<ffffffff813a749b>] __driver_attach+0xab/0xb0
> [ 1554.684940] [<ffffffff813a73f0>] ? driver_probe_device+0x240/0x240
> [ 1554.684944] [<ffffffff813a5646>] bus_for_each_dev+0x56/0x90
> [ 1554.684947] [<ffffffff813a6d5e>] driver_attach+0x1e/0x20
> [ 1554.684951] [<ffffffff813a68d0>] bus_add_driver+0x190/0x290
> [ 1554.684955] [<ffffffffa010d000>] ? 0xffffffffa010cfff
> [ 1554.684958] [<ffffffff813a79fa>] driver_register+0x7a/0x160
> [ 1554.684962] [<ffffffffa010d000>] ? 0xffffffffa010cfff
> [ 1554.684966] [<ffffffff81347eb1>] pnp_register_driver+0x21/0x30
> [ 1554.684970] [<ffffffffa010d01d>] init_tis+0x1d/0xc5 [tpm_tis]
> [ 1554.684974] [<ffffffff8107d6f3>] ? __blocking_notifier_call_chain+0x63/0x80
> [ 1554.684978] [<ffffffff8100203f>] do_one_initcall+0x3f/0x170
> [ 1554.684981] [<ffffffff810b562f>] sys_init_module+0x8f/0x200
> [ 1554.684985] [<ffffffff815a46e9>] system_call_fastpath+0x16/0x1b
> [ 1554.684987] ---[ end trace b394e16efa725e58 ]---
> [ 1554.684990] kobject_create_and_add: kobject_add error: -17
> [ 1554.685002] ------------[ cut here ]------------
> [ 1554.685040] kernel BUG at
> /data/home/bguthro/dev/unstable/linux/fs/sysfs/group.c:65!
> [ 1554.685086] invalid opcode: 0000 [#1] SMP
> [ 1554.685118] Modules linked in: tpm_tis(+) tpm tpm_bios ehci_hcd
> ebtable_filter ebtables ip_tables x_tables zram(C) zsmalloc(C) bridge
> stp llc snd_hda_codec_conexant arc4 i915 snd_hda_intel iwldvm
> snd_hda_codec mac80211 pcmcia hid_generic drm_kms_helper yenta_socket
> snd_hwdep snd_pcm iwlwifi drm pcmcia_rsrc snd_timer pcmcia_core usbhid
> thinkpad_acpi coretemp snd_page_alloc cfg80211 psmouse hid
> i2c_algo_bit intel_agp serio_raw microcode intel_gtt snd soundcore
> video nvram ahci libahci e1000e [last unloaded: tpm_bios]
> [ 1554.685524] CPU 0
> [ 1554.685540] Pid: 3492, comm: modprobe Tainted: G WC
> 3.6.0-orc #3 LENOVO 2765T6U/2765T6U
> [ 1554.685593] RIP: e030:[<ffffffff811d29f9>] [<ffffffff811d29f9>]
> internal_create_group+0x1e9/0x210
> [ 1554.686670] RSP: e02b:ffff880002a4fbd8 EFLAGS: 00010246
> [ 1554.686706] RAX: 0000000000000000 RBX: ffff880002ecc000 RCX: 000000000000a9c8
> [ 1554.686747] RDX: ffffffffa00d8ec0 RSI: 0000000000000000 RDI: 0000000000000000
> [ 1554.686788] RBP: ffff880002a4fc28 R08: 0000000000016640 R09: ffffea00009d7000
> [ 1554.686829] R10: ffffffff812bfec9 R11: 6464615f646e615f R12: ffff88002871cc10
> [ 1554.686870] R13: ffff880002ecc220 R14: ffffffffa00d8ec0 R15: 0000000000000000
> [ 1554.686915] FS: 00007f33000ba700(0000) GS:ffff88002dc00000(0000)
> knlGS:0000000000000000
> [ 1554.686963] CS: e033 DS: 0000 ES: 0000 CR0: 000000008005003b
> [ 1554.686996] CR2: 00007fac43cd0000 CR3: 000000000298a000 CR4: 0000000000002660
> [ 1554.687038] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [ 1554.687079] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [ 1554.687121] Process modprobe (pid: 3492, threadinfo
> ffff880002a4e000, task ffff880025c52d20)
> [ 1554.687170] Stack:
> [ 1554.687184] ffffffffa00d8b38 0000000000000000 ffff880002a4fc08
> ffffffff812bfd7c
> [ 1554.687238] 000000005b2d2d2d ffff880002ecc000 ffff88002871cc10
> ffff880002ecc220
> [ 1554.687292] ffff8800275c0e90 ffff880002ecc130 ffff880002a4fc38
> ffffffff811d2a53
> [ 1554.687345] Call Trace:
> [ 1554.687366] [<ffffffff812bfd7c>] ? kobject_put+0x2c/0x60
> [ 1554.687400] [<ffffffff811d2a53>] sysfs_create_group+0x13/0x20
> [ 1554.687439] [<ffffffffa00d78a7>] sys_add_ppi+0x27/0x40 [tpm_bios]
> [ 1554.687480] [<ffffffffa0100aee>] tpm_register_hardware+0x22e/0x3c0 [tpm]
> [ 1554.687523] [<ffffffffa0109b7a>] tpm_tis_init+0x44/0x601 [tpm_tis]
> [ 1554.687562] [<ffffffffa010a225>] tpm_tis_pnp_init+0xee/0x10d [tpm_tis]
> [ 1554.687604] [<ffffffffa010a137>] ? tpm_tis_init+0x601/0x601 [tpm_tis]
> [ 1554.687645] [<ffffffff81348180>] pnp_device_probe+0x70/0xf0
> [ 1554.687681] [<ffffffff813a6f4a>] ? driver_sysfs_add+0x7a/0xb0
> [ 1554.687718] [<ffffffff813a722b>] driver_probe_device+0x7b/0x240
> [ 1554.687756] [<ffffffff813a749b>] __driver_attach+0xab/0xb0
> [ 1554.687795] [<ffffffff813a73f0>] ? driver_probe_device+0x240/0x240
> [ 1554.687832] [<ffffffff813a5646>] bus_for_each_dev+0x56/0x90
> [ 1554.687868] [<ffffffff813a6d5e>] driver_attach+0x1e/0x20
> [ 1554.687902] [<ffffffff813a68d0>] bus_add_driver+0x190/0x290
> [ 1554.687939] [<ffffffffa010d000>] ? 0xffffffffa010cfff
> [ 1554.687973] [<ffffffff813a79fa>] driver_register+0x7a/0x160
> [ 1554.688009] [<ffffffffa010d000>] ? 0xffffffffa010cfff
> [ 1554.688042] [<ffffffff81347eb1>] pnp_register_driver+0x21/0x30
> [ 1554.688080] [<ffffffffa010d01d>] init_tis+0x1d/0xc5 [tpm_tis]
> [ 1554.688117] [<ffffffff8107d6f3>] ? __blocking_notifier_call_chain+0x63/0x80
> [ 1554.688161] [<ffffffff8100203f>] do_one_initcall+0x3f/0x170
> [ 1554.688197] [<ffffffff810b562f>] sys_init_module+0x8f/0x200
> [ 1554.688233] [<ffffffff815a46e9>] system_call_fastpath+0x16/0x1b
> [ 1554.688269] Code: 45 b0 0f 84 60 ff ff ff 48 8b 7d c8 89 45 b0 e8
> 8e e7 ff ff 4c 8b 6d c8 8b 45 b0 e9 48 ff ff ff 48 83 7f 30 00 0f 85
> 57 fe ff ff <0f> 0b be c3 00 00 00 48 c7 c7 f8 7e 7e 81 e8 04 10 e8 ff
> e9 80
> [ 1554.688576] RIP [<ffffffff811d29f9>] internal_create_group+0x1e9/0x210
> [ 1554.688621] RSP <ffff880002a4fbd8>
> [ 1554.704039] ---[ end trace b394e16efa725e59 ]---
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to [email protected]
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/
On Fri, Oct 05, 2012 at 11:16:06AM -0700, Eric W. Biederman wrote:
> Ben Guthro <[email protected]> writes:
>
> > I am seeing a regression in today's (Oct 5) kernel - 2 WARNINGS, and a
> > BUG below that seems to occur upon resuming from S3.
> >
> > I can start a bisection with 3.6 - but wanted to check to see if
> > anyone else is also experiencing this failure...
>
> I took a quick look and this is a deterministic failure. The same
> file is being added to sysfs twice.
>
> Since the routine causing this failure appears to be sys_add_ppi I
> expect the commit that added this failure mode is the commit below.
>
> Xiaoyan Zhang, Kent Yoder can you guys look at this see why the tpm
> code is adding itself multiple times into sysfs?
It looks like the ppi sysfs teardown code is MIA. Xiaoyan, can you add
it to tpm_ppi.c, with a caller in tpm_unregister_hardware?
Kent
> Thanks,
> Eric
>
> commit f84fdff0fdcda7e509ce530e0ee612233a2104fb
> Author: Xiaoyan Zhang <[email protected]>
> Date: Wed Aug 22 18:47:22 2012 +0800
>
> driver: add PPI support in tpm driver
>
> The Physical Presence Interface enables the OS and the BIOS to cooperate and
> provides a simple and straightforward platform user experience for
> administering the TPM without sacrificing security.
>
> V2: separate the patch out in a separate source file,
> add #ifdef CONFIG_ACPI so it compiles out on ppc,
> use standard error instead of ACPI error as return code of show/store fns.
> V3: move #ifdef CONFIG_ACPI from .c file to .h file.
> V4: move tpm_ppi code from tpm module to tpm_bios module.
> V5: modify sys_add_ppi() so that ppi_attr_grp doesn't need to be exported
>
> Signed-off-by: Xiaoyan Zhang <[email protected]>
> Signed-off-by: Kent Yoder <[email protected]>
>
>
> > I'm not sure that it matters in this case, but this is running as a
> > Xen dom0 pvops kernel.
> >
> > Regards
> > Ben Guthro
> >
> >
> > [ 1554.684622] ------------[ cut here ]------------
> > [ 1554.684634] WARNING: at
> > /data/home/bguthro/dev/unstable/linux/fs/sysfs/dir.c:536
> > sysfs_add_one+0xc0/0xf0()
> > [ 1554.684636] Hardware name: 2765T6U
> > [ 1554.684638] sysfs: cannot create duplicate filename '/devices/pnp0/00:0c/ppi'
> > [ 1554.684640] Modules linked in: tpm_tis(+) tpm tpm_bios ehci_hcd
> > ebtable_filter ebtables ip_tables x_tables zram(C) zsmalloc(C) bridge
> > stp llc snd_hda_codec_conexant arc4 i915 snd_hda_intel iwldvm
> > snd_hda_codec mac80211 pcmcia hid_generic drm_kms_helper yenta_socket
> > snd_hwdep snd_pcm iwlwifi drm pcmcia_rsrc snd_timer pcmcia_core usbhid
> > thinkpad_acpi coretemp snd_page_alloc cfg80211 psmouse hid
> > i2c_algo_bit intel_agp serio_raw microcode intel_gtt snd soundcore
> > video nvram ahci libahci e1000e [last unloaded: tpm_bios]
> > [ 1554.684681] Pid: 3492, comm: modprobe Tainted: G C 3.6.0-orc #3
> > [ 1554.684683] Call Trace:
> > [ 1554.684691] [<ffffffff810539cf>] warn_slowpath_common+0x7f/0xc0
> > [ 1554.684695] [<ffffffff81053ac6>] warn_slowpath_fmt+0x46/0x50
> > [ 1554.684699] [<ffffffff811d0bb0>] sysfs_add_one+0xc0/0xf0
> > [ 1554.684702] [<ffffffff811d0d9c>] create_dir+0x7c/0xd0
> > [ 1554.684706] [<ffffffff811d1116>] sysfs_create_dir+0x86/0xe0
> > [ 1554.684712] [<ffffffff812bffec>] kobject_add_internal+0x9c/0x210
> > [ 1554.684716] [<ffffffff812c05e7>] kobject_add+0x67/0xc0
> > [ 1554.684720] [<ffffffff812c090e>] kobject_create_and_add+0x3e/0x80
> > [ 1554.684725] [<ffffffffa00d7898>] sys_add_ppi+0x18/0x40 [tpm_bios]
> > [ 1554.684731] [<ffffffffa0100aee>] tpm_register_hardware+0x22e/0x3c0 [tpm]
> > [ 1554.684736] [<ffffffffa0109b7a>] tpm_tis_init+0x44/0x601 [tpm_tis]
> > [ 1554.684741] [<ffffffffa010a225>] tpm_tis_pnp_init+0xee/0x10d [tpm_tis]
> > [ 1554.684746] [<ffffffffa010a137>] ? tpm_tis_init+0x601/0x601 [tpm_tis]
> > [ 1554.684751] [<ffffffff81348180>] pnp_device_probe+0x70/0xf0
> > [ 1554.684757] [<ffffffff813a6f4a>] ? driver_sysfs_add+0x7a/0xb0
> > [ 1554.684761] [<ffffffff813a722b>] driver_probe_device+0x7b/0x240
> > [ 1554.684764] [<ffffffff813a749b>] __driver_attach+0xab/0xb0
> > [ 1554.684768] [<ffffffff813a73f0>] ? driver_probe_device+0x240/0x240
> > [ 1554.684772] [<ffffffff813a5646>] bus_for_each_dev+0x56/0x90
> > [ 1554.684776] [<ffffffff813a6d5e>] driver_attach+0x1e/0x20
> > [ 1554.684779] [<ffffffff813a68d0>] bus_add_driver+0x190/0x290
> > [ 1554.684784] [<ffffffffa010d000>] ? 0xffffffffa010cfff
> > [ 1554.684787] [<ffffffff813a79fa>] driver_register+0x7a/0x160
> > [ 1554.684791] [<ffffffffa010d000>] ? 0xffffffffa010cfff
> > [ 1554.684795] [<ffffffff81347eb1>] pnp_register_driver+0x21/0x30
> > [ 1554.684800] [<ffffffffa010d01d>] init_tis+0x1d/0xc5 [tpm_tis]
> > [ 1554.684805] [<ffffffff8107d6f3>] ? __blocking_notifier_call_chain+0x63/0x80
> > [ 1554.684809] [<ffffffff8100203f>] do_one_initcall+0x3f/0x170
> > [ 1554.684814] [<ffffffff810b562f>] sys_init_module+0x8f/0x200
> > [ 1554.684819] [<ffffffff815a46e9>] system_call_fastpath+0x16/0x1b
> > [ 1554.684822] ---[ end trace b394e16efa725e57 ]---
> > [ 1554.684825] ------------[ cut here ]------------
> > [ 1554.684829] WARNING: at
> > /data/home/bguthro/dev/unstable/linux/lib/kobject.c:196
> > kobject_add_internal+0x1f4/0x210()
> > [ 1554.684830] Hardware name: 2765T6U
> > [ 1554.684832] kobject_add_internal failed for ppi with -EEXIST, don't
> > try to register things with the same name in the same directory.
> > [ 1554.684834] Modules linked in: tpm_tis(+) tpm tpm_bios ehci_hcd
> > ebtable_filter ebtables ip_tables x_tables zram(C) zsmalloc(C) bridge
> > stp llc snd_hda_codec_conexant arc4 i915 snd_hda_intel iwldvm
> > snd_hda_codec mac80211 pcmcia hid_generic drm_kms_helper yenta_socket
> > snd_hwdep snd_pcm iwlwifi drm pcmcia_rsrc snd_timer pcmcia_core usbhid
> > thinkpad_acpi coretemp snd_page_alloc cfg80211 psmouse hid
> > i2c_algo_bit intel_agp serio_raw microcode intel_gtt snd soundcore
> > video nvram ahci libahci e1000e [last unloaded: tpm_bios]
> > [ 1554.684870] Pid: 3492, comm: modprobe Tainted: G WC 3.6.0-orc #3
> > [ 1554.684872] Call Trace:
> > [ 1554.684876] [<ffffffff810539cf>] warn_slowpath_common+0x7f/0xc0
> > [ 1554.684880] [<ffffffff81053ac6>] warn_slowpath_fmt+0x46/0x50
> > [ 1554.684884] [<ffffffff811d0431>] ? release_sysfs_dirent+0x61/0xe0
> > [ 1554.684888] [<ffffffff812c0144>] kobject_add_internal+0x1f4/0x210
> > [ 1554.684892] [<ffffffff812c05e7>] kobject_add+0x67/0xc0
> > [ 1554.684897] [<ffffffff812c090e>] kobject_create_and_add+0x3e/0x80
> > [ 1554.684901] [<ffffffffa00d7898>] sys_add_ppi+0x18/0x40 [tpm_bios]
> > [ 1554.684906] [<ffffffffa0100aee>] tpm_register_hardware+0x22e/0x3c0 [tpm]
> > [ 1554.684911] [<ffffffffa0109b7a>] tpm_tis_init+0x44/0x601 [tpm_tis]
> > [ 1554.684916] [<ffffffffa010a225>] tpm_tis_pnp_init+0xee/0x10d [tpm_tis]
> > [ 1554.684921] [<ffffffffa010a137>] ? tpm_tis_init+0x601/0x601 [tpm_tis]
> > [ 1554.684925] [<ffffffff81348180>] pnp_device_probe+0x70/0xf0
> > [ 1554.684929] [<ffffffff813a6f4a>] ? driver_sysfs_add+0x7a/0xb0
> > [ 1554.684933] [<ffffffff813a722b>] driver_probe_device+0x7b/0x240
> > [ 1554.684936] [<ffffffff813a749b>] __driver_attach+0xab/0xb0
> > [ 1554.684940] [<ffffffff813a73f0>] ? driver_probe_device+0x240/0x240
> > [ 1554.684944] [<ffffffff813a5646>] bus_for_each_dev+0x56/0x90
> > [ 1554.684947] [<ffffffff813a6d5e>] driver_attach+0x1e/0x20
> > [ 1554.684951] [<ffffffff813a68d0>] bus_add_driver+0x190/0x290
> > [ 1554.684955] [<ffffffffa010d000>] ? 0xffffffffa010cfff
> > [ 1554.684958] [<ffffffff813a79fa>] driver_register+0x7a/0x160
> > [ 1554.684962] [<ffffffffa010d000>] ? 0xffffffffa010cfff
> > [ 1554.684966] [<ffffffff81347eb1>] pnp_register_driver+0x21/0x30
> > [ 1554.684970] [<ffffffffa010d01d>] init_tis+0x1d/0xc5 [tpm_tis]
> > [ 1554.684974] [<ffffffff8107d6f3>] ? __blocking_notifier_call_chain+0x63/0x80
> > [ 1554.684978] [<ffffffff8100203f>] do_one_initcall+0x3f/0x170
> > [ 1554.684981] [<ffffffff810b562f>] sys_init_module+0x8f/0x200
> > [ 1554.684985] [<ffffffff815a46e9>] system_call_fastpath+0x16/0x1b
> > [ 1554.684987] ---[ end trace b394e16efa725e58 ]---
> > [ 1554.684990] kobject_create_and_add: kobject_add error: -17
> > [ 1554.685002] ------------[ cut here ]------------
> > [ 1554.685040] kernel BUG at
> > /data/home/bguthro/dev/unstable/linux/fs/sysfs/group.c:65!
> > [ 1554.685086] invalid opcode: 0000 [#1] SMP
> > [ 1554.685118] Modules linked in: tpm_tis(+) tpm tpm_bios ehci_hcd
> > ebtable_filter ebtables ip_tables x_tables zram(C) zsmalloc(C) bridge
> > stp llc snd_hda_codec_conexant arc4 i915 snd_hda_intel iwldvm
> > snd_hda_codec mac80211 pcmcia hid_generic drm_kms_helper yenta_socket
> > snd_hwdep snd_pcm iwlwifi drm pcmcia_rsrc snd_timer pcmcia_core usbhid
> > thinkpad_acpi coretemp snd_page_alloc cfg80211 psmouse hid
> > i2c_algo_bit intel_agp serio_raw microcode intel_gtt snd soundcore
> > video nvram ahci libahci e1000e [last unloaded: tpm_bios]
> > [ 1554.685524] CPU 0
> > [ 1554.685540] Pid: 3492, comm: modprobe Tainted: G WC
> > 3.6.0-orc #3 LENOVO 2765T6U/2765T6U
> > [ 1554.685593] RIP: e030:[<ffffffff811d29f9>] [<ffffffff811d29f9>]
> > internal_create_group+0x1e9/0x210
> > [ 1554.686670] RSP: e02b:ffff880002a4fbd8 EFLAGS: 00010246
> > [ 1554.686706] RAX: 0000000000000000 RBX: ffff880002ecc000 RCX: 000000000000a9c8
> > [ 1554.686747] RDX: ffffffffa00d8ec0 RSI: 0000000000000000 RDI: 0000000000000000
> > [ 1554.686788] RBP: ffff880002a4fc28 R08: 0000000000016640 R09: ffffea00009d7000
> > [ 1554.686829] R10: ffffffff812bfec9 R11: 6464615f646e615f R12: ffff88002871cc10
> > [ 1554.686870] R13: ffff880002ecc220 R14: ffffffffa00d8ec0 R15: 0000000000000000
> > [ 1554.686915] FS: 00007f33000ba700(0000) GS:ffff88002dc00000(0000)
> > knlGS:0000000000000000
> > [ 1554.686963] CS: e033 DS: 0000 ES: 0000 CR0: 000000008005003b
> > [ 1554.686996] CR2: 00007fac43cd0000 CR3: 000000000298a000 CR4: 0000000000002660
> > [ 1554.687038] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> > [ 1554.687079] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> > [ 1554.687121] Process modprobe (pid: 3492, threadinfo
> > ffff880002a4e000, task ffff880025c52d20)
> > [ 1554.687170] Stack:
> > [ 1554.687184] ffffffffa00d8b38 0000000000000000 ffff880002a4fc08
> > ffffffff812bfd7c
> > [ 1554.687238] 000000005b2d2d2d ffff880002ecc000 ffff88002871cc10
> > ffff880002ecc220
> > [ 1554.687292] ffff8800275c0e90 ffff880002ecc130 ffff880002a4fc38
> > ffffffff811d2a53
> > [ 1554.687345] Call Trace:
> > [ 1554.687366] [<ffffffff812bfd7c>] ? kobject_put+0x2c/0x60
> > [ 1554.687400] [<ffffffff811d2a53>] sysfs_create_group+0x13/0x20
> > [ 1554.687439] [<ffffffffa00d78a7>] sys_add_ppi+0x27/0x40 [tpm_bios]
> > [ 1554.687480] [<ffffffffa0100aee>] tpm_register_hardware+0x22e/0x3c0 [tpm]
> > [ 1554.687523] [<ffffffffa0109b7a>] tpm_tis_init+0x44/0x601 [tpm_tis]
> > [ 1554.687562] [<ffffffffa010a225>] tpm_tis_pnp_init+0xee/0x10d [tpm_tis]
> > [ 1554.687604] [<ffffffffa010a137>] ? tpm_tis_init+0x601/0x601 [tpm_tis]
> > [ 1554.687645] [<ffffffff81348180>] pnp_device_probe+0x70/0xf0
> > [ 1554.687681] [<ffffffff813a6f4a>] ? driver_sysfs_add+0x7a/0xb0
> > [ 1554.687718] [<ffffffff813a722b>] driver_probe_device+0x7b/0x240
> > [ 1554.687756] [<ffffffff813a749b>] __driver_attach+0xab/0xb0
> > [ 1554.687795] [<ffffffff813a73f0>] ? driver_probe_device+0x240/0x240
> > [ 1554.687832] [<ffffffff813a5646>] bus_for_each_dev+0x56/0x90
> > [ 1554.687868] [<ffffffff813a6d5e>] driver_attach+0x1e/0x20
> > [ 1554.687902] [<ffffffff813a68d0>] bus_add_driver+0x190/0x290
> > [ 1554.687939] [<ffffffffa010d000>] ? 0xffffffffa010cfff
> > [ 1554.687973] [<ffffffff813a79fa>] driver_register+0x7a/0x160
> > [ 1554.688009] [<ffffffffa010d000>] ? 0xffffffffa010cfff
> > [ 1554.688042] [<ffffffff81347eb1>] pnp_register_driver+0x21/0x30
> > [ 1554.688080] [<ffffffffa010d01d>] init_tis+0x1d/0xc5 [tpm_tis]
> > [ 1554.688117] [<ffffffff8107d6f3>] ? __blocking_notifier_call_chain+0x63/0x80
> > [ 1554.688161] [<ffffffff8100203f>] do_one_initcall+0x3f/0x170
> > [ 1554.688197] [<ffffffff810b562f>] sys_init_module+0x8f/0x200
> > [ 1554.688233] [<ffffffff815a46e9>] system_call_fastpath+0x16/0x1b
> > [ 1554.688269] Code: 45 b0 0f 84 60 ff ff ff 48 8b 7d c8 89 45 b0 e8
> > 8e e7 ff ff 4c 8b 6d c8 8b 45 b0 e9 48 ff ff ff 48 83 7f 30 00 0f 85
> > 57 fe ff ff <0f> 0b be c3 00 00 00 48 c7 c7 f8 7e 7e 81 e8 04 10 e8 ff
> > e9 80
> > [ 1554.688576] RIP [<ffffffff811d29f9>] internal_create_group+0x1e9/0x210
> > [ 1554.688621] RSP <ffff880002a4fbd8>
> > [ 1554.704039] ---[ end trace b394e16efa725e59 ]---
> > --
> > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> > the body of a message to [email protected]
> > More majordomo info at http://vger.kernel.org/majordomo-info.html
> > Please read the FAQ at http://www.tux.org/lkml/
>
Kent Yoder wrote on?2012-10-06:
> On Fri, Oct 05, 2012 at 11:16:06AM -0700, Eric W. Biederman wrote:
>> Ben Guthro <[email protected]> writes:
>>
>>> I am seeing a regression in today's (Oct 5) kernel - 2 WARNINGS, and a
>>> BUG below that seems to occur upon resuming from S3.
>>>
>>> I can start a bisection with 3.6 - but wanted to check to see if
>>> anyone else is also experiencing this failure...
>>
>> I took a quick look and this is a deterministic failure. The same
>> file is being added to sysfs twice.
>>
>> Since the routine causing this failure appears to be sys_add_ppi I
>> expect the commit that added this failure mode is the commit below.
>>
>> Xiaoyan Zhang, Kent Yoder can you guys look at this see why the tpm
>> code is adding itself multiple times into sysfs?
>
> It looks like the ppi sysfs teardown code is MIA. Xiaoyan, can you add
> it to tpm_ppi.c, with a caller in tpm_unregister_hardware?
I will try to provide a fix.
Jimmy