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Date:      Sun, 8 Nov 2015 22:51:11 +0700
From:      Eugene Grosbein <eugen@grosbein.net>
To:        Adrian Chadd <adrian@freebsd.org>
Cc:        "freebsd-mips@freebsd.org" <freebsd-mips@freebsd.org>
Subject:   USB-related problem
Message-ID:  <563F6F6F.1010807@grosbein.net>
In-Reply-To: <563F5630.2000407@grosbein.net>
References:  <56348063.3090508@grosbein.net> <56348239.3050701@grosbein.net> <CAJ-Vmok%2BgKXcpzpxNCBhxX8sYSh%2BQO7OaeojB4MCufO%2BA4zceg@mail.gmail.com> <563500FC.8020201@grosbein.net> <CAJ-Vmo=EpmG6OJxq_v_mqKMF48h_B3K7vKqnnaKAi3x1s-uaWQ@mail.gmail.com> <5635148B.2070307@grosbein.net> <CAJ-VmomzkG8ZB0h1Qc=Oeny2ZOzQg1UirUprM_gmMy64F5ZRYw@mail.gmail.com> <56351AA6.80903@grosbein.net> <CAJ-VmomLen5p7ELejU7QtC5CO2j8hydb_CvdOqQsfaaMAtmdkA@mail.gmail.com> <563523CA.3040207@grosbein.net> <CAJ-Vmonpd8R5C%2BNvhOGFD1okkkit990DV8c4Dm%2BLmpZ2uFfVkA@mail.gmail.com> <56367686.4090801@grosbein.net> <CAJ-VmomtJ9eKfAJYfn4e2S1xWN8-YHo0M0KH-9V=VjNBf6vVVA@mail.gmail.com> <563707A0.3040700@grosbein.net> <CANCZdfrB0hkjmTU-9NzimBv=X_h-=bF0D2azBxg=9B=kmitv7Q@mail.gmail.com> <56370E1D.3040801@grosbein.net> <CAJ-Vmo=0vOAq8db_GeLWmdXr7xJdzUh44ZZJrQ9vVdpvzT9hiQ@mail.gmail.com> <563F5630.2000407@grosbein.net>

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On 08.11.2015 21:03, Eugene Grosbein wrote:

>> ok, this is next . What's the deal with this? can you panic it and
>> report it please? :)
> 
> I did earlier in my letter with subject "jemalloc aborts: lloc_arena.c:363: Failed assertion: "p[i] == 0":
> 
>> Trap cause = 2 (TLB miss (load or instr. fetch) - kernel mode)
>> panic: trap
>> Uptime: 3m7s
>> panic: bufwrite: buffer is not busy???
>> Uptime: 3m7s
> 
> However, I cannot reproduce the problem anymore using recent HEAD
> compiled without -Os and with kernel having "options USB_HOST_ALIGN=64"
> as Warner Losh suggested.

Spoke too early... I run several more tests and peproduced the problem.
The kernel just hangs installing packages to /usr/local mounted async
using USB pen drive.

I'm building debugging kernel to run more tests with KDB_TRACE and WITNES.
Btw, mips/trap.c needs the following patch or else kernel with options KDB
does not build due to missing "debugger_on_panic" declaration:

--- sys/mips/mips/trap.c.orig 2015-11-08 17:05:21.413505000 +0700
+++ sys/mips/mips/trap.c      2015-11-08 22:14:49.092653000 +0700
@@ -49,6 +49,7 @@ __FBSDID("$FreeBSD: head/sys/mips/mips/t
 #include <sys/systm.h>
 #include <sys/sysent.h>
 #include <sys/proc.h>
+#include <sys/kdb.h>
 #include <sys/kernel.h>
 #include <sys/signalvar.h>
 #include <sys/syscall.h>



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