Hi Nils,
Nils Kanning wrote:
> 0001:
>
> The tablet does not work, see also dmesg_0001. I had to press ctrl+c
> during booting at [12.000000] and lsusb -t gives
> 1-1.3:1.0: No such file or directory
> (and then hangs)
This is 0024 from the earlier list:
f393ee2b814e Input: wacom - retrieve maximum number of touch points
from the HID usage table when it is supported
I'll look at it more closely. (Probably I introduced a bug while
backporting it.)
> 0002:
>
> I could not apply the patch:
Are you trying to apply this patch alone or on top of 0001? Only the
latter is supposed to work.
[...]
> "Sometimes" this configuration really works. But most of the times it
> does not and I have to press ctrl+c at [12.000000] (see
> dmesg_20-24_fail). Again lsusb -t gives
> 1-1.3:1.0: No such file or directory
> (and hangs)
>
> (I'm sorry for "sometimes" and "most of the times" ...)
No, thanks much for these details. It's very helpful.
[...]
> [ 2.961552] Linux video capture interface: v2.00
> [ 2.962940] ------------[ cut here ]------------
> [ 2.962988] kernel BUG at mm/slab.c:505!
> [ 2.963036] invalid opcode: 0000 [#1] SMP
> [ 2.963157] CPU 2
> [ 2.963195] Modules linked in: videobuf2_core videodev media
> ghash_clmulni_intel(+) cdc_acm(+) cdc_ncm(+) cdc_wdm wacom(+) usbnet
> snd_seq_midi mii aesni_intel aes_x86_64 aes_generic cryptd snd_seq_midi_event
> snd_rawmidi snd_seq microcode(+) snd_seq_device snd_timer i915(+) iwlwifi
> drm_kms_helper psmouse snd drm mac80211 tpm_tis i2c_i801 serio_raw pcspkr
> evdev iTCO_wdt tpm i2c_algo_bit acpi_cpufreq iTCO_vendor_support cfg80211 ac
> i2c_core soundcore mperf rfkill wmi tpm_bios battery power_supply video
> button processor ext4 crc16 jbd2 mbcache usbhid hid sd_mod crc_t10dif ahci
> libahci libata ehci_hcd scsi_mod thermal thermal_sys e1000e usbcore sdhci_pci
> sdhci mmc_core usb_common [last unloaded: scsi_wait_scan]
> [ 2.965891]
> [ 2.965932] Pid: 579, comm: modprobe Not tainted 3.4.2-amd64 #1 LENOVO
> 42992QG/42992QG
> [ 2.966079] RIP: 0010:[<ffffffff810eeee2>] [<ffffffff810eeee2>]
> virt_to_cache+0x1b/0x23
> [ 2.966193] RSP: 0000:ffff88021204fcf8 EFLAGS: 00010046
> [ 2.966251] RAX: ffffea00073a6800 RBX: ffff880210b0020c RCX:
> 000000000000040b
> [ 2.966312] RDX: 0200000000000000 RSI: ffff880211e11c80 RDI:
> ffff880210b0020c
> [ 2.966375] RBP: 0000000000000286 R08: ffff88021204e000 R09:
> 000000000000002e
> [ 2.966435] R10: 00007fffcdeb8770 R11: ffff88020fcf0c40 R12:
> ffffffffa04029cd
> [ 2.966497] R13: 000000000000005a R14: 0000000000000001 R15:
> ffff88020ec71c00
> [ 2.966560] FS: 00007ff356606700(0000) GS:ffff88021e280000(0000)
> knlGS:0000000000000000
> [ 2.966631] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> [ 2.966686] CR2: 0000000000403228 CR3: 00000002127d4000 CR4:
> 00000000000407e0
> [ 2.966743] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
> 0000000000000000
> [ 2.966801] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
> 0000000000000400
> [ 2.966860] Process modprobe (pid: 579, threadinfo ffff88021204e000, task
> ffff8802111e36d0)
> [ 2.966933] Stack:
> [ 2.966990] ffff88021204e000 ffffffff810ef84e 0000000000000000
> ffff880210b4b080
> [ 2.967214] ffff880210011400 ffffffffa04029cd ffff880210011400
> ffff880200000165
> [ 2.967433] ffff880200001388 0000000000000202 ffff880200000002
> ffff88020fce0800
> [ 2.967657] Call Trace:
> [ 2.967713] [<ffffffff810ef84e>] ? kfree+0x50/0x6c
> [ 2.967775] [<ffffffffa04029cd>] ? wacom_probe+0x52c/0x957 [wacom]
> [ 2.967845] [<ffffffffa006866b>] ? usb_probe_interface+0xf2/0x15d
> [usbcore]
That's
BUG_ON(!PageSlab(page))
in page_get_cache() and represents a free of an invalid pointer (for
example a double free). Thanks again. More tomorrow.
Good night,
Jonathan
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