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Date: Sun, 20 Feb 2011 01:15:52 -0500 From: Ted Ts'o <tytso@....edu> To: Mark Lord <kernel@...savvy.com> Cc: Linux Kernel <linux-kernel@...r.kernel.org>, linux-ext4@...r.kernel.org Subject: Re: ext4 crash on 2.6.37: NULL ptr in ext4_discard_preallocations On Sun, Feb 20, 2011 at 12:05:27AM -0500, Mark Lord wrote: > I suppose it must be, as there's no other 0x3c offset in that function. > Which means it's probably this line that's crashing: > > BUG_ON(pa->pa_obj_lock != &ei->i_prealloc_lock); > > ...which could only happen if "pa" was NULL there. > I wonder how that happened ? Which could only happen if ei->i_prealloc_list were not properly initialized (i..e, it was still NULL). Which shouldn't ever happen...., since all ext4_inodes are initialized in ext4_alloc_inode(). Hmm, can you replicate the crash? - Ted -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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