ring-buffer: Fix crash due to uninitialized new_pages list head

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The new_pages list head in the cpu_buffer is not initialized. When
adding pages to the ring buffer, if the memory allocation fails in
ring_buffer_resize, the clean up handler tries to free up the allocated
pages from all the cpu buffers. The panic is caused by referencing the
uninitialized new_pages list head.

Initializing the new_pages list head in rb_allocate_cpu_buffer fixes
this.

Link: http://lkml.kernel.org/r/1340391005-10880-1-git-send-email-vnagarnaik@google.com

Cc: Justin Teravest <teravest@google.com>
Cc: David Sharp <dhsharp@google.com>
Signed-off-by: Vaibhav Nagarnaik <vnagarnaik@google.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

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Vaibhav Nagarnaik 2012-06-22 11:50:05 -07:00 • committed by Steven Rostedt

parent 662f5cedb3

commit 44b99462d9

1 changed files with 1 additions and 0 deletions

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kernel/trace/ring_buffer.c

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