From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <47FE37D0.5030004@cs.helsinki.fi> Date: Thu, 10 Apr 2008 18:52:48 +0300 From: Pekka Enberg MIME-Version: 1.0 Subject: Re: git-slub crashes on the t16p References: <20080410015958.bc2fd041.akpm@linux-foundation.org> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Andrew Morton Cc: Christoph Lameter , linux-mm@kvack.org List-ID: Hi Andrew, Pekka J Enberg wrote: >> It's the tree I pulled about 12 hours ago. Quite early in boot. >> >> crash: http://userweb.kernel.org/~akpm/p4105087.jpg >> config: http://userweb.kernel.org/~akpm/config-t61p.txt >> git-slub.patch: http://userweb.kernel.org/~akpm/mmotm/broken-out/git-slub.patch >> >> A t61p is a dual-core x86_64. >> >> I was testing with all of the -mm series up to and including git-slub.patch >> applied. On Thu, 10 Apr 2008, Andrew Morton wrote: > Does the following patch fix it? Okay, forget the patch. Looking at disassembly of the oops: 0000000000000000 <.text>: 0: eb ce jmp 0xffffffffffffffd0 2: 48 89 de mov %rbx,%rsi 5: 4c 89 e7 mov %r12,%rdi 8: e8 38 fe ff ff callq 0xfffffffffffffe45 d: b8 01 00 00 00 mov $0x1,%eax 12: 5b pop %rbx 13: 41 5c pop %r12 15: c9 leaveq 16: c3 retq 17: c3 retq 18: 48 63 f6 movslq %esi,%rsi 1b: 55 push %rbp 1c: 48 8b 8c f7 20 01 00 mov 0x120(%rdi,%rsi,8),%rcx 23: 00 24: 48 89 e5 mov %rsp,%rbp 27: 48 85 c9 test %rcx,%rcx 2a: 74 0d je 0x39 2c: f0 48 ff 41 50 lock incq 0x50(%rcx) # %rcx == 0x64 31: 48 63 c2 movslq %edx,%rax 34: f0 48 01 41 58 lock add %rax,0x58(%rcx) 39: c9 leaveq 3a: c3 retq 3b: 48 8b 07 mov (%rdi),%rax 3e: 55 push %rbp 3f: 48 rex.W 40: 89 .byte 0x89 Somehow s->node[node] gets to be 0x64 which makes no sense. I checked my logs and I hit the exact same problem but it went away with "make clean". Andrew, can you please try that as well? Pekka -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org