Date: Wed, 13 Jul 2005 20:10:09 GMT From: Marc Olzheim <marcolz@stack.nl> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/83375: Fatal trap 12 cloning a pty Message-ID: <200507132010.j6DKA9ok014749@freefall.freebsd.org>
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The following reply was made to PR kern/83375; it has been noted by GNATS. From: Marc Olzheim <marcolz@stack.nl> To: FreeBSD-gnats-submit@FreeBSD.org, freebsd-bugs@FreeBSD.org Cc: Marc Olzheim <marcolz@stack.nl> Subject: Re: kern/83375: Fatal trap 12 cloning a pty Date: Wed, 13 Jul 2005 22:04:05 +0200 On Wed, Jul 13, 2005 at 09:30:13AM +0000, FreeBSD-gnats-submit@FreeBSD.org wrote: Here's the FreeBSD 5.4-STABLE trace: Fatal trap 12: page fault while in kernel mode cpuid = 0; apic id = 00 fault virtual address = 0x3b271cd8 fault code = supervisor read, page not present instruction pointer = 0x8:0xc0557bd0 stack pointer = 0x10:0xebd9a9ec frame pointer = 0x10:0xebd9a9f8 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 = 8993 (screen) [thread pid 8993 tid 100342 ] Stopped at 0xc0557bd0 = ptsopen+0xb8: movl 0xc0701960 = linesw(,%eax,4),%eax db> tr Tracing pid 8993 tid 100342 td 0xc64cc300 ptsopen(c7e8ea00,3,2000,c64cc300,ebd9aa60) at 0xc0557bd0 = ptsopen+0xb8 spec_open(ebd9aa60,ebd9ab1c,c0581339,ebd9aa60,180) at 0xc04f292c = spec_open+0x28c spec_vnoperate(ebd9aa60) at 0xc04f269b = spec_vnoperate+0x13 vn_open_cred(ebd9abd4,ebd9acd4,0,c7d0d600,7) at 0xc0581339 = vn_open_cred+0x431 vn_open(ebd9abd4,ebd9acd4,0,7,c0724b20) at 0xc0580f06 = vn_open+0x1e kern_open(c64cc300,bfbfc910,0,3,0) at 0xc057b0b4 = kern_open+0xcc open(c64cc300,ebd9ad04,3,2a,282) at 0xc057afe4 = open+0x18 syscall(2f,281e002f,bfbf002f,6,bfbfc910) at 0xc06803eb = syscall+0x227 Xint0x80_syscall() at 0xc066fcef = Xint0x80_syscall+0x1f --- syscall (5, FreeBSD ELF32, open), eip = 0x2816c7bb, esp = 0xbfbfc8dc, ebp = 0xbfbfc938 --- db>
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