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v0.5.1
https://github.com/torvalds/linux
02 December 2023, 22:23:51 UTC
Revision 891348ca0f66206f1dc0e30d63757e3df1ae2d15 authored by Robin Holt on 20 December 2012, 23:05:50 UTC, committed by Linus Torvalds on 21 December 2012, 01:40:20 UTC 
SGI-XP: handle non-fatal traps
 
We found a user code which was raising a divide-by-zero trap.  That trap
would lead to XPC connections between system-partitions being torn down
due to the die_chain notifier callouts it received.

This also revealed a different issue where multiple callers into
xpc_die_deactivate() would all attempt to do the disconnect in parallel
which would sometimes lock up but often overwhelm the console on very
large machines as each would print at least one line of output at the
end of the deactivate.

I reviewed all the users of the die_chain notifier and changed the code
to ignore the notifier callouts for reasons which will not actually lead
to a system to continue on to call die().

[akpm@linux-foundation.org: fix ia64]
Signed-off-by: Robin Holt <holt@sgi.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent c39540c
History
Tip revision: 891348ca0f66206f1dc0e30d63757e3df1ae2d15 authored by Robin Holt on 20 December 2012, 23:05:50 UTC
SGI-XP: handle non-fatal traps
Tip revision: 891348c
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