Re: [tpmdd-devel] [PATCH 1/1] TPM: STMicroelectronics ST33 I2C KERNEL 3.x.x OOPS!

From: Peter Hüwe
Date: Fri Dec 07 2012 - 22:59:33 EST


since I don't have a tpm I simply tried out whether the handling without a tpm
is correct, which it unfortunately isn't as my kernel oopses.

Steps to reproduce:
# insmod /data/data-old/linux-2.6/drivers/char/tpm/tpm_i2c_stm_st33.ko
# echo st33zp24_i2c 0x20 /sys/bus/i2c/devices/i2c-1/new_device

BUG: unable to handle kernel NULL pointer dereference at 0000000000000018
IP: [<ffffffffa02ff4ad>] tpm_st33_i2c_probe+0x87/0x21a [tpm_i2c_stm_st33]
PGD 3dcbbe067 PUD 3e994b067 PMD 0
Oops: 0002 [#1] PREEMPT SMP
Modules linked in: tpm_i2c_stm_st33(O) tpm(O) tpm_bios(O) w83627ehf hwmon_vid
ipv6 snd_hda_codec_hdmi snd_hda_codec_realtek joydev usbhid coretemp kvm_intel
kvm ghash_clmulni_intel sg pcspkr snd_hda_intel snd_hda_codec snd_hwdep
snd_pcm snd_timer snd i2c_i801 snd_page_alloc mei [last unloaded:
Pid: 4454, comm: bash Tainted: G W O 3.6.9 #14 To Be Filled By O.E.M.
To Be Filled By O.E.M./Z77 Pro4
RIP: 0010:[<ffffffffa02ff4ad>] [<ffffffffa02ff4ad>] tpm_st33_i2c_probe+0x87/0x21a
RSP: 0018:ffff8803dcb87c18 EFLAGS: 00010286
RAX: ffff8803eb0d1800 RBX: ffff8803ff710400 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff88041d0026d0 RDI: 0000000000000001
RBP: ffff8803dcb87c38 R08: 000000000000000b R09: 0000000000000001
R10: 0000000000000001 R11: ffff8803ff710400 R12: 0000000000000000
R13: ffff8803ff710c00 R14: ffff8803ff710c28 R15: ffff8803ff710c04
FS: 00007f520567a700(0000) GS:ffff88041f280000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000018 CR3: 00000003e48b0000 CR4: 00000000001407e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process bash (pid: 4454, threadinfo ffff8803dcb86000, task ffff8803c87226c0)
ffff8803ff710c28 ffffffffa02ffb80 ffffffffa02ff426 ffff8803ff710c00
ffff8803dcb87c78 ffffffff8134079a ffffffffa02ffe00 ffff8803ff710c28
00000000ffffffed ffffffffa02ffe00 0000000000000000 ffff88040ebe4460
Call Trace:
[<ffffffffa02ff426>] ? request_locality+0xc2/0xc2 [tpm_i2c_stm_st33]
[<ffffffff8134079a>] i2c_device_probe+0xa4/0xcd
[<ffffffff812b9c24>] driver_probe_device+0xa9/0x1bf
[<ffffffff812b9de9>] __device_attach+0x35/0x3a
[<ffffffff812b9db4>] ? __driver_attach+0x7a/0x7a
[<ffffffff812b84d7>] bus_for_each_drv+0x51/0x87
[<ffffffff812b9b3f>] device_attach+0x6e/0x8e
[<ffffffff812b91b0>] bus_probe_device+0x2d/0x98
[<ffffffff812b7ace>] device_add+0x3e1/0x548
[<ffffffff812bf2b3>] ? device_pm_init+0x60/0x84
[<ffffffff812b7c4c>] device_register+0x17/0x1b
[<ffffffff813410c4>] i2c_new_device+0x12b/0x175
[<ffffffff813411e4>] i2c_sysfs_new_device+0xd6/0x15a
[<ffffffff812b6394>] dev_attr_store+0x1b/0x1d
[<ffffffff81136f39>] sysfs_write_file+0xef/0x12b
[<ffffffff810e4ac3>] vfs_write+0xa9/0x119
[<ffffffff810e4cfa>] sys_write+0x45/0x6c
[<ffffffff814005a2>] system_call_fastpath+0x16/0x1b
Code: ff 48 c7 c6 a7 fa 2f a0 48 85 c0 48 89 c3 74 cd 48 8b 3d d7 d0 2a e1 be
d0 00 00 00 4d 8b a5 c8 00 00 00 e8 3b 32 de e0 48 85 c0 <49> 89 44 24 18 0f
84 5a 01 00 00 48 8b 3d b1 d0 2a e1 be d0 00
RIP [<ffffffffa02ff4ad>] tpm_st33_i2c_probe+0x87/0x21a [tpm_i2c_stm_st33]
RSP <ffff8803dcb87c18>
CR2: 0000000000000018
---[ end trace ddc5676681e8ed72 ]---

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