Re: Kernel build fails on ARM: Cannot fork: Cannot allocate memory

From: Ruslan Bukin <br_at_bsdpad.com>
Date: Sun, 23 Jun 2013 21:05:07 +0400
On Sun, Jun 23, 2013 at 07:50:40PM +0300, Konstantin Belousov wrote:
> On Sun, Jun 23, 2013 at 08:44:25PM +0400, Ruslan Bukin wrote:
> > On Sun, Jun 23, 2013 at 07:16:17PM +0300, Konstantin Belousov wrote:
> > > On Sun, Jun 23, 2013 at 06:43:46PM +0400, Ruslan Bukin wrote:
> > > > 
> > > > Trying to mount root from ufs:/dev/da0 []...
> > > > WARNING: / was not properly dismounted
> > > > warning: no time-of-day clock registered, system time will not be set accurately
> > > > panic: __rw_wlock_hard: recursing but non-recursive rw pmap pv global _at_ /usr/home/br/dev/head/sys/arm/arm/pmap-v6.c:1289
> > > > 
> > > > KDB: enter: panic
> > > > [ thread pid 1 tid 100001 ]
> > > > Stopped at      kdb_enter+0x48: ldrb    r15, [r15, r15, ror r15]!
> > > > db> bt
> > > > Tracing pid 1 tid 100001 td 0xc547f620
> > > > _end() at 0xde9d0530
> > > > scp=0xde9d0530 rlv=0xc1211458 (db_trace_thread+0x34)
> > > >         rsp=0xde9d0514 rfp=0xc12d1b60
> > > > Bad frame pointer: 0xc12d1b60
> > > > db> 
> > > This is completely broken.  It seems that witness triggered the panic,
> > > and ddb is unable to obtain a backtrace from the normal panic(9) call.
> > > 
> > > Show the output of the 'show alllocks'.
> > 
> > No such command
> Do you have witness in the kernel config ? If not, add it to the config
> and retry.

Trying to mount root from ufs:/dev/da0 []...
WARNING: / was not properly dismounted
warning: no time-of-day clock registered, system time will not be set accurately
panic: __rw_wlock_hard: recursing but non-recursive rw pmap pv global _at_ /usr/home/br/dev/head/sys/arm/arm/pmap-v6.c:1289

KDB: enter: panic
[ thread pid 1 tid 100001 ]
Stopped at      kdb_enter+0x48: ldrb    r15, [r15, r15, ror r15]!
db> show alllocks
Process 1 (kernel) thread 0xc55fc620 (100001)
exclusive sleep mutex pmap (pmap) r = 0 (0xc5600590) locked _at_ /usr/home/br/dev/head/sys/arm/arm/pmap-v6.c:729
exclusive rw pmap pv global (pmap pv global) r = 0 (0xc1479dd0) locked _at_ /usr/home/br/dev/head/sys/arm/arm/pmap-v6.c:728
shared rw vm object (vm object) r = 0 (0xc1551d4c) locked _at_ /usr/home/br/dev/head/sys/vm/vm_map.c:1809
exclusive sx vm map (user) (vm map (user)) r = 0 (0xc5600528) locked _at_ /usr/home/br/dev/head/sys/kern/imgact_elf.c:445
exclusive lockmgr ufs (ufs) r = 0 (0xc56f7914) locked _at_ /usr/home/br/dev/head/sys/kern/imgact_elf.c:821
exclusive sleep mutex Giant (Giant) r = 0 (0xc147c778) locked _at_ /usr/home/br/dev/head/sys/kern/vfs_mount.c:1093
db> 
Received on Sun Jun 23 2013 - 15:05:33 UTC

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