Date: Wed, 17 Apr 2013 01:44:54 +0200 From: Damjan Marion <damjan.marion@gmail.com> To: Warner Losh <imp@bsdimp.com> Cc: "freebsd-arm@FreeBSD.org" <freebsd-arm@freebsd.org> Subject: Re: __rw_wlock_hard panic on 1st malloc Message-ID: <92C60946-8FFB-46A1-9400-9E0F7B11FC23@gmail.com> In-Reply-To: <B94DB19B-7940-4376-B38B-369FD0E45282@bsdimp.com> References: <DB4E4AA0-91D8-4253-8044-9C33B60E1A3A@gmail.com> <8DE83B01-4508-41C5-B2BD-95A72D0AD963@bsdimp.com> <BD1AE699-31B2-4F13-8222-BEB90EE0E57E@gmail.com> <B94DB19B-7940-4376-B38B-369FD0E45282@bsdimp.com>
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When I apply your patch I'm getting the same error but this time in = busdma_init(). Again it is 1st malloc() inside busdma_bufalloc_create(). Can anybody confirm that latest HEAD is working on other Cortex-A CPUs? Damjan On Apr 17, 2013, at 12:43 AM, Warner Losh <imp@bsdimp.com> wrote: > The problem here is a double fault. The first fault is in = init_dynamic_kenv when we try to read the kernel environment. The second = fault happens because we don't wind up in the debugger (I think due to = reading the stack goes awry). >=20 > I've fixed the first problem in r249570. >=20 > Not sure what's going on beyond that, since after fixing that I hit a = similar issue in stack_copy() but without a traceback, it is kinda hard. >=20 > This is on my MarsBoard with an allwinner tech's A10 CPU. >=20 > Warner >=20 >=20 > On Apr 14, 2013, at 12:51 PM, Damjan Marion wrote: >=20 >>=20 >> I doubt. init_dynamic_kenv() is called by sysinit as part of standard = sysinit sequence and=20 >> it is called after kmeminit(). >>=20 >> There is no my custom code except standard parts of initarm = initialisation. >>=20 >> Damjan >>=20 >> On Apr 14, 2013, at 7:19 PM, Warner Losh <imp@bsdimp.com> wrote: >>=20 >>> Maybe you are calling malloc before these locks are initialized? >>>=20 >>> Warner >>>=20 >>> On Apr 14, 2013, at 5:03 AM, Damjan Marion wrote: >>>=20 >>>>=20 >>>> Hi, >>>>=20 >>>> I'm playing a bit with i.MX6 based board (wandboard) and I have = serial console working but >>>> now it panics in init_dynamic_kenv() with the following error: >>>>=20 >>>> panic: __rw_wlock_hard: recursing but non-recursive rw pmap pv = global @ /usr/src/sys/arm/arm/pmap-v6.c:1187 >>>>=20 >>>> It looks like this is the 1st place where malloc() is called, an = malloc returns valid VA >>>> but 1st attempt to access that address produces panic above. >>>>=20 >>>> Any idea what can be the reason for this or any other hint? >>>>=20 >>>> Thanks, >>>>=20 >>>> Damjan >>>> _______________________________________________ >>>> freebsd-arm@freebsd.org mailing list >>>> http://lists.freebsd.org/mailman/listinfo/freebsd-arm >>>> To unsubscribe, send any mail to = "freebsd-arm-unsubscribe@freebsd.org" >>>=20 >>=20 >=20
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