Date: Sun, 19 Jun 2016 18:47:19 -0300 From: =?UTF-8?B?T3RhY8OtbGlv?= <otacilio.neto@bsd.com.br> To: "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: <5e322d5a-8c42-8e69-f3c4-e607d40e8724@bsd.com.br> In-Reply-To: <fd733c3a-1407-88ae-3bf9-f664e821deb0@bsd.com.br> References: <fd733c3a-1407-88ae-3bf9-f664e821deb0@bsd.com.br>
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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>
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