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9eab46b7cb
e1000_clean_tx_irq cleans buffers and sets tx_ring->next_to_clean, then e1000_xmit_frame reuses the cleaned buffers. But there are no memory barriers when buffers gets recycled, so the recycled buffers can be corrupted. Use smp_store_release to update tx_ring->next_to_clean and smp_load_acquire to read tx_ring->next_to_clean to properly hand off buffers from e1000_clean_tx_irq to e1000_xmit_frame. The data race was found with KernelThreadSanitizer (KTSAN). Signed-off-by: Dmitry Vyukov <dvyukov@google.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> |
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.. | ||
e1000_ethtool.c | ||
e1000_hw.c | ||
e1000_hw.h | ||
e1000_main.c | ||
e1000_osdep.h | ||
e1000_param.c | ||
e1000.h | ||
Makefile |