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Re: [bug] crash when reading /proc/mounts (was: Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..)

... an exception on the *next* page: > > BUG: unable to handle kernel paging request ... config under which i get similar crashes, config attached. One common theme is ... f64c1f00 fill_kobj_path: path = '/class/input/input0' BUG: unable to handle kernel paging ...

linux-kernel - Ingo Molnar - Oct 3 2007 - 11:40

Re: [bug] crash when reading /proc/mounts (was: Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..)

... get an exception on the *next* page: > > > > BUG: unable to handle kernel paging request at ... config under which i get similar crashes, config > attached. One common theme is ... vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux. ...

linux-kernel - Linus Torvalds - Oct 3 2007 - 12:07

[bug] crash when reading /proc/mounts (was: Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..)

... |MAP_ANONYMOUS, -1, 0) = 0xb7f3e000 3247 read(3, 3247 +++ killed by ... cat /proc/mounts" triggers the crash reliably. Ingo ----------------> BUG: unable to handle ... /0xca SS:ESP 0068:ec5ddf04 BUG: unable to handle kernel paging ...

linux-kernel - Ingo Molnar - Oct 3 2007 - 04:46

Re: [bug] crash when reading /proc/mounts (was: Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..)

... 1.2-13) and indeed the crash is gone. So you are ... normal kernels too much this bug needs CONFIG_DEBUG_PAGEALLOC. (or it needs a ... the other config as well - and crash is gone there too. (not ... .org/majordomo-info.html Please read the FAQ at http://www. ...

linux-kernel - Ingo Molnar - Oct 3 2007 - 12:07

Re: [bug] crash when reading /proc/mounts (was: Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..)

... i just triggered the procfs crash below with -rc9 on a ... shit compiler. Lookie here: - the bug happens on this: char c ... exception on the *next* page: BUG: unable to handle kernel paging ... org/majordomo-info.html Please read the FAQ at http://www ...

linux-kernel - Linus Torvalds - Oct 3 2007 - 11:11

Re: [bug] crash when reading /proc/mounts (was: Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..)

... > hm, i just triggered the procfs crash below with -rc9 on a testbox. ... reproduce it via 'service sshd restart'. > The crash site is: > > (gdb) list *0xc017599d > 0xc017599d ... vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux. ...

linux-kernel - Al Viro - Oct 3 2007 - 09:34

Re: [bug] crash when reading /proc/mounts (was: Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..)

... > hm, i just triggered the procfs crash below with -rc9 on a testbox. ... reproduce it via 'service sshd restart'. > > The crash site is: > > > > (gdb) list *0xc017599d > > ... vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org ...

linux-kernel - Ingo Molnar - Oct 3 2007 - 10:08

Re: [bug] crash when reading /proc/mounts (was: Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..)

... debug debugfs rw 0 0 > ) = 290 > read(3, "", 4096) = 0 > close(3) ... perhaps debugfs) disabling debugfs makes the crash go away so it's ... .org/majordomo-info.html Please read the FAQ at http://www. ...

linux-kernel - Ingo Molnar - Oct 3 2007 - 05:12

Re: [bug] crash when reading /proc/mounts (was: Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..)

... wrote: > -CONFIG_MAC80211_DEBUGFS=y it's CONFIG_MAC80211_DEBUGFS=y causing the crash. Ingo - To unsubscribe from this list: send the line " ... info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/

linux-kernel - Ingo Molnar - Oct 3 2007 - 05:23

Re: [bug] crash when reading /proc/mounts (was: Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..)

... You need to make a gcc bug-report. >... Ingo can't send a gcc bug-report since gcc 4.0 is no longer supported ... or to work around this compiler bug in the kernel. > Linus cu ... .org/majordomo-info.html Please read the FAQ at http://www.tux ...

linux-kernel - Adrian Bunk - Oct 4 2007 - 10:12

Re: [bug] crash when reading /proc/mounts (was: Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..)

... You need to make a gcc bug-report. > >... > > Ingo can't send a gcc bug-report since gcc 4.0 is no longer supported ... or to work around this compiler bug in the > kernel. Distro can ... .org/majordomo-info.html Please read the FAQ at http://www.tux ...

linux-kernel - Alexey Dobriyan - Oct 4 2007 - 11:08

Re: [bug] crash when reading /proc/mounts (was: Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..)

... shit. You need to make a gcc bug-report. Because this is not a > ... it is not dereferencable)). So its a compiler bug. Alan - To unsubscribe from this list: send ... ://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/ ...

linux-kernel - Alan Cox - Oct 3 2007 - 11:51

Re: [bug] crash when reading /proc/mounts (was: Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..)

... , 3 Oct 2007, Linus Torvalds wrote: > > - the bug happens on this: > > char c = *p++ ... utter crap). I *suspect* that the compiler bug is along the lines of: (a) ... ://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/ ...

linux-kernel - Linus Torvalds - Oct 3 2007 - 11:47

Re: [bug] crash when reading /proc/mounts (was: Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..)

... it gets annoying after a bit. > >Heh. > >When I'm ruler of the universe, it ... >bit ahead of myself. Any time frame when that will happen? - To unsubscribe from this ... ://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/ ...

linux-kernel - Jan Engelhardt - Oct 3 2007 - 12:25

Re: [bug] crash when reading /proc/mounts (was: Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..)

... On Wed, 3 Oct 2007, Jan Engelhardt wrote: > > >When I'm ruler of the universe, it * ... >bit ahead of myself. > > Any time frame when that will happen? I'm working on it ... ://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/ ...

linux-kernel - Linus Torvalds - Oct 3 2007 - 13:07

Re: [bug] crash when reading /proc/mounts (was: Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..)

... printks, docs and the like and it gets annoying after a bit. Heh. When I'm ruler of the universe, it *will* be illegal. I'm ... .org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/

linux-kernel - Linus Torvalds - Oct 3 2007 - 12:09

Re: [bug] crash when reading /proc/mounts (was: Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..)

... st_mode=S_IFREG|0444, st_size=0, ...}) = 0 read(3, "rootfs / rootfs rw 0 0 ... debug debugfs rw 0 0 ) = 290 read(3, "", 4096) = 0 close(3) ... .org/majordomo-info.html Please read the FAQ at http://www. ...

linux-kernel - Ingo Molnar - Oct 3 2007 - 04:50

Re: [bug] crash when reading /proc/mounts (was: Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..)

... use-after-free is not too likely to trigger page fault on read immediately afterwards - you'd need a pretty tight race to hit it. - ... More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/

linux-kernel - Al Viro - Oct 3 2007 - 10:26

Re: [bug] crash when reading /proc/mounts (was: Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..)

... -after-free is not too > likely to trigger page fault on read immediately afterwards - you'd > need a pretty tight race to hit it. I ... More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/

linux-kernel - Arjan van de Ven - Oct 3 2007 - 11:12

Re: [bug] crash when reading /proc/mounts (was: Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..)

... Ingo - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/

linux-kernel - Ingo Molnar - Oct 3 2007 - 11:49

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