Messages in this thread | | | Date | Mon, 8 Jan 2007 22:55:07 +0000 | From | Frederik Deweerdt <> | Subject | Re: [BUG] sleeping function called from invalid context at kernel/sched.c |
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On Mon, Jan 08, 2007 at 04:27:32PM -0500, Sumit Narayan wrote: > Hi, > > I am trying to do file write operations in a thread (filewrite()) > initiated from a jprobe (fs_vfs_write()) set on kernel function > (vfs_write()). Although the write operation succeed, I get this on my > log: > > BUG: sleeping function called from invalid context at kernel/sched.c:3678 > in_atomic():0, irqs_disabled():1 > [<c011a65b>] __might_sleep+0xa5/0xab > [<c0343a00>] wait_for_completion+0x1a/0xc9 > [<c0118480>] __wake_up+0x32/0x43 > [<c012b33a>] __queue_work+0x42/0x4f > [<c012e0f7>] kthread_create+0x9b/0xd3 > [<c012e00a>] keventd_create_kthread+0x0/0x52 > [<f8a560d4>] filewrite+0x0/0xaf [fsTrace] > [<c03464b9>] do_page_fault+0x31f/0x5c5 > [<f8a561da>] fs_vfs_write+0x57/0x9e [fsTrace] > [<f8a560d4>] filewrite+0x0/0xaf [fsTrace] > [<c015f396>] sys_write+0x41/0x67 > [<c01034d1>] sysenter_past_esp+0x56/0x79 > ======================= kprobe disables interrupts, and you're not supposed to sleep with interrupts disabled. But you call keventd_create_kthread which sleeps, and that issues this message.
Regards, Frederik - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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