Date: Tue, 21 Jun 2016 22:40:16 +0300 From: "Andriy Voskoboinyk" <s3erios@gmail.com> To: =?utf-8?Q?Otac=C3=ADlio?= <otacilio.neto@bsd.com.br> Cc: "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org>, freebsd-hackers@freebsd.org Subject: Re: (beagleboneblack/urtwn) Kernel page fault with the following non-sleepable locks held Message-ID: <op.yje99ex5iew4ia@localhost> In-Reply-To: <1a55f000-eff9-31db-f420-e00278c4c054@bsd.com.br> References: <fd733c3a-1407-88ae-3bf9-f664e821deb0@bsd.com.br> <5e322d5a-8c42-8e69-f3c4-e607d40e8724@bsd.com.br> <1a55f000-eff9-31db-f420-e00278c4c054@bsd.com.br>
next in thread | previous in thread | raw e-mail | index | archive | help
Tue, 21 Jun 2016 03:06:15 +0300 було написано Otacílio
<otacilio.neto@bsd.com.br>:
Should be fixed in r302064.
> Em 19/06/2016 18:47, Otacílio escreveu:
>> Em 19/06/2016 18:40, Otacílio escreveu:
>>> I was installing netperf on a fresh FreeBSD-ALPHA3
>>>
>>> FreeBSD beaglebone 11.0-ALPHA3 FreeBSD 11.0-ALPHA3 #0 r301846: Mon Jun
>>> 13 19:54:27 BRT 2016
>>> ota@nostromo:/root/crochet/work/obj/arm.armv6/usr/src/sys/BEAGLEBONE-DEBUG
>>> arm
>>>
>>> on BeagleboneBlack using wrtwn when I got this kernel panic:
>>>
>>> root@beaglebone:/usr/home/ota # pkg install netperf
>>> Updating FreeBSD repository catalogue...
>>> Fetching meta.txz: 100% 944 B 0.9kB/s 00:01
>>> Fetching packagesite.txz: 100% 4 MiB 46.0kB/s 01:42
>>> Processing entries: 6%lock order reversal:
>>> 1st 0xc30b35d4 syncer (syncer) @ /usr/src/sys/kern/vfs_subr.c:2048
>>> 2nd 0xc319d6f4 ufs (ufs) @ /usr/src/sys/kern/vfs_subr.c:2498
>>> stack backtrace:
>>> Processing entries: 58%Kernel page fault with the following
>>> non-sleepable locks held:
>>> exclusive sleep mutex tcp_sc_head (tcp_sc_head) r = 0 (0xc2f9d520)
>>> locked @ /usr/src/sys/netinet/tcp_syncache.c:494
>>> shared rw tcp (tcp) r = 0 (0xc08ef348) locked @
>>> /usr/src/sys/netinet/tcp_input.c:1034
>>> exclusive rw tcpinp (tcpinp) r = 0 (0xc31ab494) locked @
>>> /usr/src/sys/netinet/in_pcb.c:1964
>>> stack backtrace:
>>> Fatal kernel mode data abort: 'Alignment Fault' on read
>>> trapframe: 0xdcfe58a8
>>> FSR=00000001, FAR=c2e7187a, spsr=60000013
>>> r0 =c08e7988, r1 =00000004, r2 =c06fa3ad, r3 =000007b6
>>> r4 =dcfe5a10, r5 =dcfe5b28, r6 =c2e71876, r7 =c2f9d520
>>> r8 =c2f9d520, r9 =c2e71876, r10=dcfe5b28, r11=dcfe5970
>>> r12=00000000, ssp=dcfe5938, slr=c2d34370, pc =c053d8e8
>>>
>>> [ thread pid 13 tid 100036 ]
>>> Stopped at syncookie_lookup+0x38: ldmib r6, {r1-r2}
>>> db>
>>>
>>>
>>> []'s
>>>
>>> -Otacílio
>>>
>> The kernel panic is totally reproducible. I need only do a ssh in the
>> beaglebone using ptty on windows or ssh on freebsd and the kernel panic
>> is raised.
>>
>> FreeBSD/arm (beaglebone) (ttyu0)
>>
>> login: Kernel page fault with the following non-sleepable locks held:
>> exclusive sleep mutex tcp_sc_head (tcp_sc_head) r = 0 (0xc2f95480)
>> locked @ /usr/src/sys/netinet/tcp_syncache.c:494
>> shared rw tcp (tcp) r = 0 (0xc08ef348) locked @
>> /usr/src/sys/netinet/tcp_input.c:1034
>> exclusive rw tcpinp (tcpinp) r = 0 (0xc341e494) locked @
>> /usr/src/sys/netinet/in_pcb.c:1964
>> stack backtrace:
>> Fatal kernel mode data abort: 'Alignment Fault' on read
>> trapframe: 0xdcfe58a8
>> FSR=00000001, FAR=c2e7807a, spsr=60000013
>> r0 =c08e7988, r1 =00000004, r2 =c06fa3ad, r3 =000007b6
>> r4 =dcfe5a10, r5 =dcfe5b28, r6 =c2e78076, r7 =c2f95480
>> r8 =c2f95480, r9 =c2e78076, r10=dcfe5b28, r11=dcfe5970
>> r12=00000000, ssp=dcfe5938, slr=c2d34370, pc =c053d8e8
>>
>> [ thread pid 13 tid 100036 ]
>> Stopped at syncookie_lookup+0x38: ldmib r6, {r1-r2}
>> db>
>>
> FreeBSD11-ALPHA4 shows the same behavior. The only thing that I need to
> raise the fault is ssh in the beaglebone.
>
>
> root@beaglebone:~ # uname -a
> FreeBSD beaglebone 11.0-ALPHA4 FreeBSD 11.0-ALPHA4 #0 r301975: Fri Jun
> 17 13:32:55 UTC 2016
> root@releng2.nyi.freebsd.org:/usr/obj/arm.armv6/usr/src/sys/BEAGLEBONE
> arm
> root@beaglebone:~ # Kernel page fault with the following non-sleepable
> locks held:
> exclusive sleep mutex tcp_sc_head (tcp_sc_head) r = 0 (0xc2f98740)
> locked @ /usr/src/sys/netinet/tcp_syncache.c:494
> shared rw tcp (tcp) r = 0 (0xc08ef348) locked @
> /usr/src/sys/netinet/tcp_input.c:1034
> exclusive rw tcpinp (tcpinp) r = 0 (0xc33e4494) locked @
> /usr/src/sys/netinet/in_pcb.c:1964
> stack backtrace:
> Fatal kernel mode data abort: 'Alignment Fault' on read
> trapframe: 0xdcfe58c0
> FSR=00000001, FAR=c2e7a07a, spsr=60000013
> r0 =c08e7988, r1 =00000004, r2 =c06fabe6, r3 =000007b6
> r4 =dcfe5a28, r5 =dcfe5b40, r6 =c2e7a076, r7 =c2f98740
> r8 =c2f98740, r9 =c2e7a076, r10=dcfe5b40, r11=dcfe5988
> r12=00000000, ssp=dcfe5950, slr=c2d33370, pc =c053df7c
>
> [ thread pid 13 tid 100036 ]
> Stopped at syncookie_lookup+0x38: ldmib r6, {r1-r2}
> db>
>
>
> _______________________________________________
> freebsd-hackers@freebsd.org mailing list
> https://lists.freebsd.org/mailman/listinfo/freebsd-hackers
> To unsubscribe, send any mail to
> "freebsd-hackers-unsubscribe@freebsd.org"
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?op.yje99ex5iew4ia>