Date: Wed, 2 Mar 2005 17:53:04 +0100 From: Filippo Forti <filippo.forti@fastwebnet.it> To: John Baldwin <jhb@FreeBSD.org> Cc: freebsd-current@FreeBSD.org Subject: Re: Panic on suspend Message-ID: <20050302165304.GA674@portatile.fastwebnet.it> In-Reply-To: <200503011703.50828.jhb@FreeBSD.org> References: <20050301203005.GA684@portatile.fastwebnet.it> <200503011703.50828.jhb@FreeBSD.org>
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On Tue, Mar 01, 2005 at 05:03:50PM -0500, John Baldwin wrote: > On Tuesday 01 March 2005 03:30 pm, Filippo Forti wrote: > > Hi, > > I got a fully reproduceable panic while trying to suspend (to S3) on my > > laptop. FreeBSD is -CURRENT from Monday. > > > > I'm using a modified DSDT which used to work before I updated on Monday. > > dmesg from after reboot is attacched. > > > > Here comes gbd output > > > > > > Fatal trap 12: page fault while in vm86 mode > > fault virtual address = 0x2000 > > fault code = user write, page not present > > instruction pointer = 0xc000:0x5195 > > stack pointer = 0x0:0xfe4 > > frame pointer = 0x0:0x0 > > code segment = base 0x600005, limit 0x2, type 0x11 > > = DPL 1, pres 0, def32 0, gran 0 > > processor eflag = interrupt enabled, resume, mv86, IOPL = 0 > > current process = 1046 (acpiconf) > > [thread pid 1046 tid 100084] > > Stopped at 0x5159: *** error reading from address 5159 *** > > > > db> tr > > Tracing pid 1046 tid 100084 td 0xc27645c0 > > (null)(ff000e2c3,f000ff53,f000ff54,f00092da) at 0x5195 > > _end(ccce4fab,b638f354,3a6c5da3,ec956de5,fe6dff6c) at 0xf000ff53 > > > > db> where > > Tracing pid 1046 tid 100084 td 0xc27645c0 > > kdb_enter(c08d00f2,c08e69ce,c08cbfd1,c08ee7f9,2b8) at kdb_enter+0x31 > > witness_checkorder(c2cc2a54,9,c08ee7f9,2b8,0) at witness_checkorder+0xc9 > > _mtx_lock_flags(c2cc2a54,0,c08ee7f9,2b8,0) at _mtx_lock_flags+0x85 > > trap_pfault(c0c21fa8,0,2000,c0c21fa8,2000) at trap_pfault+0xa1 > > trap (0,0,0,1000,0) at trap+0x34b > > calltrap() at calltrap+0x5 > > ---trap 0xc, eip = 0x5195, esp = 0xc0c21fe8, ebp = 0 --- > > > > db> next > > panic: blockable sleep lock (sleep mutex) process lock @ > > /usr/src/sys/i386/i386/trap.c:696 > > KDB: enter: panic > > After 2 instructions (0 loads, 0 stores), > > [thread 1046 tid 1000084] > > stopped at kdb_enter+0x31: ret > > > > Thanks for your help > > Filippo > > Can you try this patch to get rid of the bogus witness warning: > This patch causes the kernel to panic on boot. Here comes something from there: Fatal trap 12: page fault while in kernel mode fault address = 0xbfbfffff fault code = supervisor write, page not present instruction pointer = 0x8:0xc085055d stack pointer = 0x10:0xe35a6cb8 frame pointer = 0x10:0xe35a6d14 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, def32 1, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = 1 (swapper) [thread pid 1 tid 100003] Stopped at subyte+0x25: movb %al,0(%edx) db> where Tracing pid 1 tid 100003 td 0xc227d450 subyte(0,e35a6d48,c08ca09d,30e,0) at subyte+0x25 fork_exit)c0634dac,0,e35a6d48) at fork_exit+0xc7 fork_trampoline() at fork_trampoline+0x8 --- trap 0x1, eip=0, esp=0xe35a6d7c, epb=0 --- > Index: trap.c > =================================================================== > RCS file: /usr/cvs/src/sys/i386/i386/trap.c,v > retrieving revision 1.270 > diff -u -r1.270 trap.c > --- trap.c 16 Nov 2004 20:42:31 -0000 1.270 > +++ trap.c 18 Feb 2005 15:31:37 -0000 > @@ -238,7 +238,7 @@ > * to the debugger. > */ > eva = rcr2(); > - if (td->td_critnest == 0) > + if (td->td_critnest == 0 && td->td_sleeplocks == NULL) > enable_intr(); > else > trap_fatal(&frame, eva); > > > -- > John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ > "Power Users Use the Power to Serve" = http://www.FreeBSD.org P.S.: I worte the other messages in reply to my problem and will notice you of the results as soon as I can test all of them. Thanks for your help Filippo
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