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Message-Id: <200910130317.n9D3HTOH055400@www262.sakura.ne.jp> Date: Tue, 13 Oct 2009 12:17:29 +0900 From: Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp> To: catalin.marinas@....com Cc: paulmck@...ux.vnet.ibm.com, linux-kernel@...r.kernel.org Subject: Re: [2.6.32-rc3 kmemleak] WARNING: at kernel/lockdep.c:3161check_flags+0xbe/0x180() Catalin Marinas wrote: > On Thu, 2009-10-08 at 21:34 +0900, Tetsuo Handa wrote: > > If the stack dump is correct, this error indicates circular function calls. > > We need to find the location which triggers circular memory allocation. > > Maybe just checking for NULL is not sufficient. > > The circular function call is expected, nothing to do with the NULL > checking. You get callbacks from the slab allocator into kmemleak which > also allocates memory (but this latter call isn't traced - similar > behaviour in kmemtrace). So, something is preventing kmemleak from being traced, isn't it? I tried 2.6.32-rc4 , but the error is not yet fixed. How can I help you? [ 0.000000] Linux version 2.6.32-rc4 (root@...oyo) (gcc version 3.3.5 (Debian 1:3.3.5-13)) #2 SMP Tue Oct 13 11:10:53 JST 2009 (...snipped...) [ 0.000000] ------------------------------------------------------- [ 0.000000] Good, all 218 testcases passed! | [ 0.000000] --------------------------------- [ 0.000000] ------------[ cut here ]------------ [ 0.000000] WARNING: at kernel/lockdep.c:3161 check_flags+0xbe/0x180() [ 0.000000] Hardware name: VMware Virtual Platform [ 0.000000] Modules linked in: [ 0.000000] Pid: 0, comm: swapper Not tainted 2.6.32-rc4 #2 [ 0.000000] Call Trace: [ 0.000000] [<c10417dd>] ? printk+0x1d/0x30 [ 0.000000] [<c10703ae>] ? check_flags+0xbe/0x180 [ 0.000000] [<c1040d91>] warn_slowpath_common+0x81/0xa0 [ 0.000000] [<c10703ae>] ? check_flags+0xbe/0x180 [ 0.000000] [<c1040e0a>] warn_slowpath_null+0x1a/0x30 [ 0.000000] [<c10703ae>] check_flags+0xbe/0x180 [ 0.000000] [<c106e23e>] lockdep_trace_alloc+0x2e/0x60 [ 0.000000] [<c10cfded>] kmem_cache_alloc+0x2d/0x1d0 [ 0.000000] [<c106e00b>] ? trace_hardirqs_off+0xb/0x10 [ 0.000000] [<c10ceeaf>] ? alloc_slabmgmt+0x5f/0x80 [ 0.000000] [<c10ceeaf>] alloc_slabmgmt+0x5f/0x80 [ 0.000000] [<c10cf2ee>] cache_grow+0xae/0x170 [ 0.000000] [<c10cf90b>] cache_alloc_refill+0x17b/0x210 [ 0.000000] [<c10cff6a>] kmem_cache_alloc+0x1aa/0x1d0 [ 0.000000] [<c10cd8c8>] ? obj_size+0x8/0x10 [ 0.000000] [<c10d3879>] ? create_object+0x29/0x220 [ 0.000000] [<c10d3879>] create_object+0x29/0x220 [ 0.000000] [<c10cd8b8>] ? obj_offset+0x8/0x10 [ 0.000000] [<c10cdf8a>] ? poison_obj+0x2a/0x50 [ 0.000000] [<c1321613>] kmemleak_alloc+0x83/0xd0 [ 0.000000] [<c10ceeaf>] ? alloc_slabmgmt+0x5f/0x80 [ 0.000000] [<c10cff45>] kmem_cache_alloc+0x185/0x1d0 [ 0.000000] [<c10ceeaf>] ? alloc_slabmgmt+0x5f/0x80 [ 0.000000] [<c10ceeaf>] alloc_slabmgmt+0x5f/0x80 [ 0.000000] [<c10cf2ee>] cache_grow+0xae/0x170 [ 0.000000] [<c10cf90b>] cache_alloc_refill+0x17b/0x210 [ 0.000000] [<c10cff6a>] kmem_cache_alloc+0x1aa/0x1d0 [ 0.000000] [<c10cd8c8>] ? obj_size+0x8/0x10 [ 0.000000] [<c10d3879>] ? create_object+0x29/0x220 [ 0.000000] [<c10d3879>] create_object+0x29/0x220 [ 0.000000] [<c10cd8b8>] ? obj_offset+0x8/0x10 [ 0.000000] [<c10cdf8a>] ? poison_obj+0x2a/0x50 [ 0.000000] [<c1321613>] kmemleak_alloc+0x83/0xd0 [ 0.000000] [<c10ceeaf>] ? alloc_slabmgmt+0x5f/0x80 [ 0.000000] [<c10cff45>] kmem_cache_alloc+0x185/0x1d0 [ 0.000000] [<c10ceeaf>] ? alloc_slabmgmt+0x5f/0x80 [ 0.000000] [<c10ceeaf>] alloc_slabmgmt+0x5f/0x80 [ 0.000000] [<c10cf2ee>] cache_grow+0xae/0x170 [ 0.000000] [<c10cf90b>] cache_alloc_refill+0x17b/0x210 [ 0.000000] [<c10cff6a>] kmem_cache_alloc+0x1aa/0x1d0 [ 0.000000] [<c10cd8c8>] ? obj_size+0x8/0x10 [ 0.000000] [<c10d3879>] ? create_object+0x29/0x220 [ 0.000000] [<c10d3879>] create_object+0x29/0x220 [ 0.000000] [<c10cd8b8>] ? obj_offset+0x8/0x10 [ 0.000000] [<c10cdf8a>] ? poison_obj+0x2a/0x50 [ 0.000000] [<c1321613>] kmemleak_alloc+0x83/0xd0 [ 0.000000] [<c10ceeaf>] ? alloc_slabmgmt+0x5f/0x80 [ 0.000000] [<c10cff45>] kmem_cache_alloc+0x185/0x1d0 [ 0.000000] [<c10ceeaf>] ? alloc_slabmgmt+0x5f/0x80 [ 0.000000] [<c10ceeaf>] alloc_slabmgmt+0x5f/0x80 [ 0.000000] [<c10cf2ee>] cache_grow+0xae/0x170 [ 0.000000] [<c10cf90b>] cache_alloc_refill+0x17b/0x210 [ 0.000000] [<c10cff6a>] kmem_cache_alloc+0x1aa/0x1d0 [ 0.000000] [<c10cd8c8>] ? obj_size+0x8/0x10 [ 0.000000] [<c10d3879>] ? create_object+0x29/0x220 [ 0.000000] [<c10d3879>] create_object+0x29/0x220 [ 0.000000] [<c10cd8b8>] ? obj_offset+0x8/0x10 [ 0.000000] [<c10cdf8a>] ? poison_obj+0x2a/0x50 [ 0.000000] [<c1321613>] kmemleak_alloc+0x83/0xd0 [ 0.000000] [<c10ceeaf>] ? alloc_slabmgmt+0x5f/0x80 [ 0.000000] [<c10cff45>] kmem_cache_alloc+0x185/0x1d0 [ 0.000000] [<c10ceeaf>] ? alloc_slabmgmt+0x5f/0x80 [ 0.000000] [<c10ceeaf>] alloc_slabmgmt+0x5f/0x80 [ 0.000000] [<c10cf2ee>] cache_grow+0xae/0x170 [ 0.000000] [<c10cf90b>] cache_alloc_refill+0x17b/0x210 [ 0.000000] [<c10cff6a>] kmem_cache_alloc+0x1aa/0x1d0 [ 0.000000] [<c10cf8d4>] ? cache_alloc_refill+0x144/0x210 [ 0.000000] [<c10cd8c8>] ? obj_size+0x8/0x10 [ 0.000000] [<c10d3879>] ? create_object+0x29/0x220 [ 0.000000] [<c10d3879>] create_object+0x29/0x220 [ 0.000000] [<c10cd8b8>] ? obj_offset+0x8/0x10 [ 0.000000] [<c10cdf8a>] ? poison_obj+0x2a/0x50 [ 0.000000] [<c1321613>] kmemleak_alloc+0x83/0xd0 [ 0.000000] [<c10ceeaf>] ? alloc_slabmgmt+0x5f/0x80 [ 0.000000] [<c10cff45>] kmem_cache_alloc+0x185/0x1d0 [ 0.000000] [<c10ceeaf>] ? alloc_slabmgmt+0x5f/0x80 [ 0.000000] [<c10ceeaf>] alloc_slabmgmt+0x5f/0x80 [ 0.000000] [<c10cf2ee>] cache_grow+0xae/0x170 [ 0.000000] [<c10cf90b>] cache_alloc_refill+0x17b/0x210 [ 0.000000] [<c10cff6a>] kmem_cache_alloc+0x1aa/0x1d0 [ 0.000000] [<c10cd8c8>] ? obj_size+0x8/0x10 [ 0.000000] [<c10d3879>] ? create_object+0x29/0x220 [ 0.000000] [<c10d3879>] create_object+0x29/0x220 [ 0.000000] [<c10cd8b8>] ? obj_offset+0x8/0x10 [ 0.000000] [<c10cdf8a>] ? poison_obj+0x2a/0x50 [ 0.000000] [<c1321613>] kmemleak_alloc+0x83/0xd0 [ 0.000000] [<c10ceeaf>] ? alloc_slabmgmt+0x5f/0x80 [ 0.000000] [<c10cff45>] kmem_cache_alloc+0x185/0x1d0 [ 0.000000] [<c10ceeaf>] ? alloc_slabmgmt+0x5f/0x80 [ 0.000000] [<c10ceeaf>] alloc_slabmgmt+0x5f/0x80 [ 0.000000] [<c10cf2ee>] cache_grow+0xae/0x170 [ 0.000000] [<c10cf90b>] cache_alloc_refill+0x17b/0x210 [ 0.000000] [<c10cff6a>] kmem_cache_alloc+0x1aa/0x1d0 [ 0.000000] [<c10cd8c8>] ? obj_size+0x8/0x10 [ 0.000000] [<c10d3879>] ? create_object+0x29/0x220 [ 0.000000] [<c10d3879>] create_object+0x29/0x220 [ 0.000000] [<c10cd8b8>] ? obj_offset+0x8/0x10 [ 0.000000] [<c10cdf8a>] ? poison_obj+0x2a/0x50 [ 0.000000] [<c1321613>] kmemleak_alloc+0x83/0xd0 [ 0.000000] [<c10ceeaf>] ? alloc_slabmgmt+0x5f/0x80 [ 0.000000] [<c10cff45>] kmem_cache_alloc+0x185/0x1d0 [ 0.000000] [<c10ceeaf>] ? alloc_slabmgmt+0x5f/0x80 [ 0.000000] [<c10ceeaf>] alloc_slabmgmt+0x5f/0x80 [ 0.000000] [<c10cf2ee>] cache_grow+0xae/0x170 [ 0.000000] [<c10cf90b>] cache_alloc_refill+0x17b/0x210 [ 0.000000] [<c10cff6a>] kmem_cache_alloc+0x1aa/0x1d0 [ 0.000000] [<c10cd8c8>] ? obj_size+0x8/0x10 [ 0.000000] [<c10d3879>] ? create_object+0x29/0x220 [ 0.000000] [<c10d3879>] create_object+0x29/0x220 [ 0.000000] [<c10cd8b8>] ? obj_offset+0x8/0x10 [ 0.000000] [<c10cdf8a>] ? poison_obj+0x2a/0x50 [ 0.000000] [<c1321613>] kmemleak_alloc+0x83/0xd0 [ 0.000000] [<c10ceeaf>] ? alloc_slabmgmt+0x5f/0x80 [ 0.000000] [<c10cff45>] kmem_cache_alloc+0x185/0x1d0 [ 0.000000] [<c10ceeaf>] ? alloc_slabmgmt+0x5f/0x80 [ 0.000000] [<c10ceeaf>] alloc_slabmgmt+0x5f/0x80 [ 0.000000] [<c10cf2ee>] cache_grow+0xae/0x170 [ 0.000000] [<c10cf90b>] cache_alloc_refill+0x17b/0x210 [ 0.000000] [<c10cff6a>] kmem_cache_alloc+0x1aa/0x1d0 [ 0.000000] [<c10cd8c8>] ? obj_size+0x8/0x10 [ 0.000000] [<c10d3879>] ? create_object+0x29/0x220 [ 0.000000] [<c10d3879>] create_object+0x29/0x220 [ 0.000000] [<c10cd8b8>] ? obj_offset+0x8/0x10 [ 0.000000] [<c10cdf8a>] ? poison_obj+0x2a/0x50 [ 0.000000] [<c1321613>] kmemleak_alloc+0x83/0xd0 [ 0.000000] [<c10ceeaf>] ? alloc_slabmgmt+0x5f/0x80 [ 0.000000] [<c10cff45>] kmem_cache_alloc+0x185/0x1d0 [ 0.000000] [<c10ceeaf>] ? alloc_slabmgmt+0x5f/0x80 [ 0.000000] [<c10ceeaf>] alloc_slabmgmt+0x5f/0x80 [ 0.000000] [<c10cf2ee>] cache_grow+0xae/0x170 [ 0.000000] [<c10cf90b>] cache_alloc_refill+0x17b/0x210 [ 0.000000] [<c10cff6a>] kmem_cache_alloc+0x1aa/0x1d0 [ 0.000000] [<c10cd8c8>] ? obj_size+0x8/0x10 [ 0.000000] [<c10d3879>] ? create_object+0x29/0x220 [ 0.000000] [<c10d3879>] create_object+0x29/0x220 [ 0.000000] [<c10cd8b8>] ? obj_offset+0x8/0x10 [ 0.000000] [<c10cdf8a>] ? poison_obj+0x2a/0x50 [ 0.000000] [<c1321613>] kmemleak_alloc+0x83/0xd0 [ 0.000000] [<c10ceeaf>] ? alloc_slabmgmt+0x5f/0x80 [ 0.000000] [<c10cff45>] kmem_cache_alloc+0x185/0x1d0 [ 0.000000] [<c10ceeaf>] ? alloc_slabmgmt+0x5f/0x80 [ 0.000000] [<c10ceeaf>] alloc_slabmgmt+0x5f/0x80 [ 0.000000] [<c10cf2ee>] cache_grow+0xae/0x170 [ 0.000000] [<c10cf90b>] cache_alloc_refill+0x17b/0x210 [ 0.000000] [<c10cff6a>] kmem_cache_alloc+0x1aa/0x1d0 [ 0.000000] [<c10cd8c8>] ? obj_size+0x8/0x10 [ 0.000000] [<c10d3879>] ? create_object+0x29/0x220 [ 0.000000] [<c10d3879>] create_object+0x29/0x220 [ 0.000000] [<c10cd8b8>] ? obj_offset+0x8/0x10 [ 0.000000] [<c10cdf8a>] ? poison_obj+0x2a/0x50 [ 0.000000] [<c1321613>] kmemleak_alloc+0x83/0xd0 [ 0.000000] [<c10ceeaf>] ? alloc_slabmgmt+0x5f/0x80 [ 0.000000] [<c10cff45>] kmem_cache_alloc+0x185/0x1d0 [ 0.000000] [<c10ceeaf>] ? alloc_slabmgmt+0x5f/0x80 [ 0.000000] [<c10ceeaf>] alloc_slabmgmt+0x5f/0x80 [ 0.000000] [<c10cf2ee>] cache_grow+0xae/0x170 [ 0.000000] [<c10cf90b>] cache_alloc_refill+0x17b/0x210 [ 0.000000] [<c10cff6a>] kmem_cache_alloc+0x1aa/0x1d0 [ 0.000000] [<c10cd8c8>] ? obj_size+0x8/0x10 [ 0.000000] [<c10d3879>] ? create_object+0x29/0x220 [ 0.000000] [<c10d3879>] create_object+0x29/0x220 [ 0.000000] [<c10cd8b8>] ? obj_offset+0x8/0x10 [ 0.000000] [<c10cdf8a>] ? poison_obj+0x2a/0x50 [ 0.000000] [<c1321613>] kmemleak_alloc+0x83/0xd0 [ 0.000000] [<c10ceeaf>] ? alloc_slabmgmt+0x5f/0x80 [ 0.000000] [<c10cff45>] kmem_cache_alloc+0x185/0x1d0 [ 0.000000] [<c10ceeaf>] ? alloc_slabmgmt+0x5f/0x80 [ 0.000000] <IRQ> <IRQ> <IRQ> <IRQ> <IRQ> <IRQ> <IRQ> <IRQ> <IRQ> <IRQ> <IRQ> <IRQ> (...snipped...) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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