Messages in this thread | | | Date | Tue, 15 Jul 2003 12:51:21 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH] [1/2] kernel error reporting (revised) |
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Jim Keniston <jkenisto@us.ibm.com> wrote: > > +int kernel_error_event_iov(const struct iovec *iov, unsigned int nseg, > + u32 groups) > +{ > ... > + > + return netlink_broadcast(kerror_nl, skb, 0, ~0, GFP_ATOMIC);
This appears to be deadlocky when called from interrupt handlers.
netlink_broadcast() does read_lock(&nl_table_lock). But nl_table_lock is not an irq-safe lock.
Possibly netlink_broadcast() can be made callable from hardirq context, but it looks to be non trivial. The various error and delivery handlers need to be reviewed, the kfree_skb() calls should be thought about, etc.
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