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Message-ID: <20140212042215.GN18016@ZenIV.linux.org.uk> Date: Wed, 12 Feb 2014 04:22:15 +0000 From: Al Viro <viro@...IV.linux.org.uk> To: Dave Jones <davej@...hat.com>, Linus Torvalds <torvalds@...ux-foundation.org>, Eric Sandeen <sandeen@...deen.net>, Dave Chinner <david@...morbit.com>, Linux Kernel <linux-kernel@...r.kernel.org>, xfs@....sgi.com Subject: Re: 3.14-rc2 XFS backtrace because irqs_disabled. On Tue, Feb 11, 2014 at 11:03:58PM -0500, Dave Jones wrote: > [ 3111.414202] [<ffffffff8d1f9036>] bio_alloc_bioset+0x156/0x210 > [ 3111.414855] [<ffffffffc0314231>] _xfs_buf_ioapply+0x1c1/0x3c0 [xfs] > [ 3111.415517] [<ffffffffc03858f2>] ? xlog_bdstrat+0x22/0x60 [xfs] > [ 3111.416175] [<ffffffffc031449b>] xfs_buf_iorequest+0x6b/0xf0 [xfs] > [ 3111.416843] [<ffffffffc03858f2>] xlog_bdstrat+0x22/0x60 [xfs] > [ 3111.417509] [<ffffffffc0387a87>] xlog_sync+0x3a7/0x5b0 [xfs] > [ 3111.418175] [<ffffffffc0387d9f>] xlog_state_release_iclog+0x10f/0x120 [xfs] > [ 3111.418846] [<ffffffffc0388840>] xlog_write+0x6f0/0x800 [xfs] > [ 3111.419518] [<ffffffffc038a061>] xlog_cil_push+0x2f1/0x410 [xfs] Very interesting. The first thing xlog_cil_push() is doing is blocking kmalloc(). So at that point it still hadn't been atomic. I'd probably slap may_sleep() in the beginning of xlog_sync() and see if that triggers... -- 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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