* mysterious udev segfault
@ 2014-11-18 11:05 Rogelio Serrano
2014-11-18 11:35 ` Borislav Petkov
[not found] ` <CA+rthh8q1+hh7wvZg8hXB4j-WyQm-ainU0X2Cb_mnGwLM9DW_Q@mail.gmail.com>
0 siblings, 2 replies; 4+ messages in thread
From: Rogelio Serrano @ 2014-11-18 11:05 UTC (permalink / raw)
To: Linux Kernel Mailing List
on boot i get this half of the time:
[ 6.349867] general protection fault: 0000 [#1] SMP
[ 6.352177] Modules linked in: zram lz4_decompress lz4_compress unix
[ 6.354483] CPU: 1 PID: 112 Comm: udevd Not tainted 3.16.3-grsec-26 #2
[ 6.356583] Hardware name: Matsushita Electric Industrial Co.,Ltd. CF-W7DWM0$
[ 6.356583] task: ffff8800ba589e00 ti: ffff8800ba58a5d8 task.ti: ffff8800ba5$
[ 6.356583] RIP: 0010:[<ffffffff812f9a2c>] [<ffffffff812f9a2c>] ffffffff812$
[ 6.356583] RSP: 0018:ffffc9001555b9c8 EFLAGS: 00010246
[ 6.356583] RAX: 0000000000000000 RBX: fefefefefefefefe RCX: ffff8800bb6d0a68
[ 6.356583] RDX: ffffc9001555ba18 RSI: 0000000000000036 RDI: fefefefefefefefe
[ 6.356583] RBP: ffffc9001555b9f8 R08: 0000000000015660 R09: ffff8800bb71d890
[ 6.356583] R10: ffff8800b9087000 R11: 000000000000000a R12: 0000000000000036
[ 6.356583] R13: ffffc9001555ba18 R14: ffff8800bb145b58 R15: ffff8800bab10000
[ 6.356583] FS: 000002c2ecf717c0(0000) GS:ffff8800bf500000(0000) knlGS:0000$
[ 6.356583] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6.356583] CR2: 000006c2ecf7b000 CR3: 000000000194d000 CR4: 00000000000007f0
[ 6.356583] Stack:
[ 6.356583] ffffc9001555b9f8 f4b9ed2e7f08ef51 000000000003602f ffff8800bb71$
[ 6.356583] ffff8800bb6d0c70 0000000000000036 ffffc9001555ba58 ffffffff812f$
[ 6.356583] ffff8800bb6d0a68 ffff8800bb71d680 ffffc9001555ba58 f4b9ed2e7f08$
[ 6.356583] Call Trace:
[ 6.356583] [<ffffffff812fa70e>] diRead+0x7e/0x250
[ 6.356583] [<ffffffff812f06c0>] jfs_iget+0x70/0x190
[ 6.356583] [<ffffffff812f1034>] jfs_lookup+0xd4/0xe0
[ 6.356583] [<ffffffff8119e8dc>] ? kmem_cache_alloc+0x3c/0x160
[ 6.356583] [<ffffffff811cf315>] ? __d_alloc+0x35/0x1d0
[ 6.356583] [<ffffffff813b643a>] ? __list_add+0x3a/0x80
[ 6.356583] [<ffffffff811cf7ec>] ? d_alloc+0x6c/0xa0
[ 6.356583] [<ffffffff811bbe28>] lookup_real+0x58/0xb0
[ 6.356583] [<ffffffff811c2f33>] do_last.isra.58+0x7a3/0xf70
[ 6.356583] [<ffffffff811c37d1>] path_openat+0xd1/0x690
[ 6.356583] [<ffffffff811c4188>] do_filp_open+0x58/0xd0
[ 6.356583] [<ffffffff811aca43>] do_sys_open+0x143/0x2d0
[ 6.356583] [<ffffffff811acc13>] SyS_open+0x43/0x70
[ 6.356583] [<ffffffff8193e3b8>] system_call_fastpath+0x16/0x1b
[ 6.356583] Code: 48 89 e5 48 83 ec 30 65 48 8b 04 25 28 00 00 00 48 89 45 d$
[ 6.356583] RIP [<ffffffff812f9a2c>] ffffffff812f9a2c
[ 6.356583] RSP <ffffc9001555b9c8>
[ 6.380024] general protection fault: 0000 [#2]
[ 6.443540] ---[ end trace 32a35fdec5a04e9e ]---
what are we seeing here? a jfs bug?
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: mysterious udev segfault
2014-11-18 11:05 mysterious udev segfault Rogelio Serrano
@ 2014-11-18 11:35 ` Borislav Petkov
2014-11-19 12:38 ` Rogelio Serrano
[not found] ` <CA+rthh8q1+hh7wvZg8hXB4j-WyQm-ainU0X2Cb_mnGwLM9DW_Q@mail.gmail.com>
1 sibling, 1 reply; 4+ messages in thread
From: Borislav Petkov @ 2014-11-18 11:35 UTC (permalink / raw)
To: Rogelio Serrano; +Cc: Linux Kernel Mailing List
On Tue, Nov 18, 2014 at 11:05:32AM +0000, Rogelio Serrano wrote:
> on boot i get this half of the time:
>
> [ 6.349867] general protection fault: 0000 [#1] SMP
> [ 6.352177] Modules linked in: zram lz4_decompress lz4_compress unix
> [ 6.354483] CPU: 1 PID: 112 Comm: udevd Not tainted 3.16.3-grsec-26 #2
^^^^^
> [ 6.356583] Hardware name: Matsushita Electric Industrial Co.,Ltd. CF-W7DWM0$
> [ 6.356583] task: ffff8800ba589e00 ti: ffff8800ba58a5d8 task.ti: ffff8800ba5$
> [ 6.356583] RIP: 0010:[<ffffffff812f9a2c>] [<ffffffff812f9a2c>] ffffffff812$
> [ 6.356583] RSP: 0018:ffffc9001555b9c8 EFLAGS: 00010246
> [ 6.356583] RAX: 0000000000000000 RBX: fefefefefefefefe RCX: ffff8800bb6d0a68
> [ 6.356583] RDX: ffffc9001555ba18 RSI: 0000000000000036 RDI: fefefefefefefefe
> [ 6.356583] RBP: ffffc9001555b9f8 R08: 0000000000015660 R09: ffff8800bb71d890
> [ 6.356583] R10: ffff8800b9087000 R11: 000000000000000a R12: 0000000000000036
> [ 6.356583] R13: ffffc9001555ba18 R14: ffff8800bb145b58 R15: ffff8800bab10000
> [ 6.356583] FS: 000002c2ecf717c0(0000) GS:ffff8800bf500000(0000) knlGS:0000$
> [ 6.356583] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 6.356583] CR2: 000006c2ecf7b000 CR3: 000000000194d000 CR4: 00000000000007f0
> [ 6.356583] Stack:
> [ 6.356583] ffffc9001555b9f8 f4b9ed2e7f08ef51 000000000003602f ffff8800bb71$
> [ 6.356583] ffff8800bb6d0c70 0000000000000036 ffffc9001555ba58 ffffffff812f$
> [ 6.356583] ffff8800bb6d0a68 ffff8800bb71d680 ffffc9001555ba58 f4b9ed2e7f08$
> [ 6.356583] Call Trace:
> [ 6.356583] [<ffffffff812fa70e>] diRead+0x7e/0x250
> [ 6.356583] [<ffffffff812f06c0>] jfs_iget+0x70/0x190
> [ 6.356583] [<ffffffff812f1034>] jfs_lookup+0xd4/0xe0
> [ 6.356583] [<ffffffff8119e8dc>] ? kmem_cache_alloc+0x3c/0x160
> [ 6.356583] [<ffffffff811cf315>] ? __d_alloc+0x35/0x1d0
> [ 6.356583] [<ffffffff813b643a>] ? __list_add+0x3a/0x80
> [ 6.356583] [<ffffffff811cf7ec>] ? d_alloc+0x6c/0xa0
> [ 6.356583] [<ffffffff811bbe28>] lookup_real+0x58/0xb0
> [ 6.356583] [<ffffffff811c2f33>] do_last.isra.58+0x7a3/0xf70
> [ 6.356583] [<ffffffff811c37d1>] path_openat+0xd1/0x690
> [ 6.356583] [<ffffffff811c4188>] do_filp_open+0x58/0xd0
> [ 6.356583] [<ffffffff811aca43>] do_sys_open+0x143/0x2d0
> [ 6.356583] [<ffffffff811acc13>] SyS_open+0x43/0x70
> [ 6.356583] [<ffffffff8193e3b8>] system_call_fastpath+0x16/0x1b
> [ 6.356583] Code: 48 89 e5 48 83 ec 30 65 48 8b 04 25 28 00 00 00 48 89 45 d$
> [ 6.356583] RIP [<ffffffff812f9a2c>] ffffffff812f9a2c
> [ 6.356583] RSP <ffffc9001555b9c8>
> [ 6.380024] general protection fault: 0000 [#2]
> [ 6.443540] ---[ end trace 32a35fdec5a04e9e ]---
>
> what are we seeing here? a jfs bug?
Can you trigger with the upstream kernel too? i.e. remove the grsec
stuff and retry.
Btw, your mail is somehow cutoff on the right-hand side with those '$'
chars...
--
Regards/Gruss,
Boris.
Sent from a fat crate under my desk. Formatting is fine.
--
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: mysterious udev segfault
2014-11-18 11:35 ` Borislav Petkov
@ 2014-11-19 12:38 ` Rogelio Serrano
0 siblings, 0 replies; 4+ messages in thread
From: Rogelio Serrano @ 2014-11-19 12:38 UTC (permalink / raw)
To: Borislav Petkov; +Cc: Linux Kernel Mailing List
On Tue, Nov 18, 2014 at 11:35 AM, Borislav Petkov <bp@alien8.de> wrote:
<snipped...>
>>
>> what are we seeing here? a jfs bug?
>
> Can you trigger with the upstream kernel too? i.e. remove the grsec
> stuff and retry.
>
I will do that. Im building a new kernel as right now.
> Btw, your mail is somehow cutoff on the right-hand side with those '$'
> chars...
>
Sorry about that. I just cut and pasted from mg in a narrow window.
<snipped...>
^ permalink raw reply [flat|nested] 4+ messages in thread
* Fwd: mysterious udev segfault
[not found] ` <CAB_-8bKBC9T-35U3=g5gL7qcg6DrfhPuk2154-yLkuwko7HZFw@mail.gmail.com>
@ 2014-12-04 10:55 ` Rogelio M. Serrano Jr.
0 siblings, 0 replies; 4+ messages in thread
From: Rogelio M. Serrano Jr. @ 2014-12-04 10:55 UTC (permalink / raw)
To: linux-kernel
---------- Forwarded message ----------
From: Rogelio M. Serrano Jr. <rogelios664@gmail.com>
Date: Thu, Dec 4, 2014 at 10:53 AM
Subject: Re: mysterious udev segfault
To: Mathias Krause <minipli@googlemail.com>
On Thu, Dec 4, 2014 at 8:13 AM, Mathias Krause <minipli@googlemail.com> wrote:
>
<snipped...>
>
> Probably not. But I don't think the grsec patch changes anything
> related to firmware loading.
> Upstream added an option to disable firmware loading via udev
> (CONFIG_FW_LOADER_USER_HELPER_FALLBACK). Maybe that's related.
> Again, logs may help here.
>
>
> Regards,
> Mathias
both loadable kernel modules and loader user helper fallback are off
Dec 3 10:18:02 (none) klogd: [ 1.789031] iwl4965: Intel(R)
Wireless WiFi 4965 driver for Linux, in-tree:
Dec 3 10:18:02 (none) klogd: [ 1.790767] iwl4965: Copyright(c)
2003-2011 Intel Corporation
Dec 3 10:18:02 (none) klogd: [ 1.792484] iwl4965 0000:03:00.0:
can't disable ASPM; OS doesn't have ASPM control
Dec 3 10:18:02 (none) klogd: [ 1.794421] iwl4965 0000:03:00.0:
Detected Intel(R) Wireless WiFi Link 4965AGN, REV=0x4
Dec 3 10:18:02 (none) klogd: [ 1.839823] iwl4965 0000:03:00.0:
device EEPROM VER=0x36, CALIB=0x5
Dec 3 10:18:02 (none) klogd: [ 1.841597] iwl4965 0000:03:00.0:
Tunable channels: 11 802.11bg, 13 802.11a channels
Dec 3 10:18:02 (none) klogd: [ 1.843495] iwl4965 0000:03:00.0: irq
31 for MSI/MSI-X
Dec 3 10:18:02 (none) klogd: [ 1.843839] iwl4965 0000:03:00.0:
Direct firmware load for iwlwifi-4965-2.ucode failed with error -2
Dec 3 10:18:02 (none) klogd: [ 1.845598] iwl4965 0000:03:00.0:
request for firmware file 'iwlwifi-4965-2.ucode' failed.
Dec 3 10:18:02 (none) klogd: [ 1.847392] iwl4965 0000:03:00.0: no
suitable firmware found!
turning loadable kernel modules back on works
^ permalink raw reply [flat|nested] 4+ messages in thread
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2014-11-18 11:05 mysterious udev segfault Rogelio Serrano
2014-11-18 11:35 ` Borislav Petkov
2014-11-19 12:38 ` Rogelio Serrano
[not found] ` <CA+rthh8q1+hh7wvZg8hXB4j-WyQm-ainU0X2Cb_mnGwLM9DW_Q@mail.gmail.com>
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2014-12-04 10:55 ` Fwd: " Rogelio M. Serrano Jr.
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