Function aq_ring_hwts_rx_alloc() maps extra AQ_CFG_RXDS_DEF bytes
for PTP HWTS ring but then generic aq_ring_free() does not take this
into account.
Create and use a specific function to free HWTS ring to fix this
issue.
Trace:
[ 215.351607] ------------[ cut here ]------------
[ 215.351612] DMA-API: atlantic 0000:4b:00.0: device driver frees DMA memory with different size [device address=0x00000000fbdd0000] [map size=34816 bytes] [unmap size=32768 bytes]
[ 215.351635] WARNING: CPU: 33 PID: 10759 at kernel/dma/debug.c:988 check_unmap+0xa6f/0x2360
..
[ 215.581176] Call Trace:
[ 215.583632] <TASK>
[ 215.585745] ? show_trace_log_lvl+0x1c4/0x2df
[ 215.590114] ? show_trace_log_lvl+0x1c4/0x2df
[ 215.594497] ? debug_dma_free_coherent+0x196/0x210
[ 215.599305] ? check_unmap+0xa6f/0x2360
[ 215.603147] ? __warn+0xca/0x1d0
[ 215.606391] ? check_unmap+0xa6f/0x2360
[ 215.610237] ? report_bug+0x1ef/0x370
[ 215.613921] ? handle_bug+0x3c/0x70
[ 215.617423] ? exc_invalid_op+0x14/0x50
[ 215.621269] ? asm_exc_invalid_op+0x16/0x20
[ 215.625480] ? check_unmap+0xa6f/0x2360
[ 215.629331] ? mark_lock.part.0+0xca/0xa40
[ 215.633445] debug_dma_free_coherent+0x196/0x210
[ 215.638079] ? __pfx_debug_dma_free_coherent+0x10/0x10
[ 215.643242] ? slab_free_freelist_hook+0x11d/0x1d0
[ 215.648060] dma_free_attrs+0x6d/0x130
[ 215.651834] aq_ring_free+0x193/0x290 [atlantic]
[ 215.656487] aq_ptp_ring_free+0x67/0x110 [atlantic]
..
[ 216.127540] ---[ end trace 6467e5964dd2640b ]---
[ 216.132160] DMA-API: Mapped at:
[ 216.132162] debug_dma_alloc_coherent+0x66/0x2f0
[ 216.132165] dma_alloc_attrs+0xf5/0x1b0
[ 216.132168] aq_ring_hwts_rx_alloc+0x150/0x1f0 [atlantic]
[ 216.132193] aq_ptp_ring_alloc+0x1bb/0x540 [atlantic]
[ 216.132213] aq_nic_init+0x4a1/0x760 [atlantic]
Fixes: 94ad94558b0f ("net: aquantia: add PTP rings infrastructure")
Signed-off-by: Ivan Vecera <[email protected]>
---
drivers/net/ethernet/aquantia/atlantic/aq_ptp.c | 4 ++--
drivers/net/ethernet/aquantia/atlantic/aq_ring.c | 13 +++++++++++++
drivers/net/ethernet/aquantia/atlantic/aq_ring.h | 1 +
3 files changed, 16 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_ptp.c b/drivers/net/ethernet/aquantia/atlantic/aq_ptp.c
index abd4832e4ed2..5acb3e16b567 100644
--- a/drivers/net/ethernet/aquantia/atlantic/aq_ptp.c
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_ptp.c
@@ -993,7 +993,7 @@ int aq_ptp_ring_alloc(struct aq_nic_s *aq_nic)
return 0;
err_exit_hwts_rx:
- aq_ring_free(&aq_ptp->hwts_rx);
+ aq_ring_hwts_rx_free(&aq_ptp->hwts_rx);
err_exit_ptp_rx:
aq_ring_free(&aq_ptp->ptp_rx);
err_exit_ptp_tx:
@@ -1011,7 +1011,7 @@ void aq_ptp_ring_free(struct aq_nic_s *aq_nic)
aq_ring_free(&aq_ptp->ptp_tx);
aq_ring_free(&aq_ptp->ptp_rx);
- aq_ring_free(&aq_ptp->hwts_rx);
+ aq_ring_hwts_rx_free(&aq_ptp->hwts_rx);
aq_ptp_skb_ring_release(&aq_ptp->skb_ring);
}
diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_ring.c b/drivers/net/ethernet/aquantia/atlantic/aq_ring.c
index cda8597b4e14..f7433abd6591 100644
--- a/drivers/net/ethernet/aquantia/atlantic/aq_ring.c
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_ring.c
@@ -919,6 +919,19 @@ void aq_ring_free(struct aq_ring_s *self)
}
}
+void aq_ring_hwts_rx_free(struct aq_ring_s *self)
+{
+ if (!self)
+ return;
+
+ if (self->dx_ring) {
+ dma_free_coherent(aq_nic_get_dev(self->aq_nic),
+ self->size * self->dx_size + AQ_CFG_RXDS_DEF,
+ self->dx_ring, self->dx_ring_pa);
+ self->dx_ring = NULL;
+ }
+}
+
unsigned int aq_ring_fill_stats_data(struct aq_ring_s *self, u64 *data)
{
unsigned int count;
diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_ring.h b/drivers/net/ethernet/aquantia/atlantic/aq_ring.h
index 52847310740a..d627ace850ff 100644
--- a/drivers/net/ethernet/aquantia/atlantic/aq_ring.h
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_ring.h
@@ -210,6 +210,7 @@ int aq_ring_rx_fill(struct aq_ring_s *self);
int aq_ring_hwts_rx_alloc(struct aq_ring_s *self,
struct aq_nic_s *aq_nic, unsigned int idx,
unsigned int size, unsigned int dx_size);
+void aq_ring_hwts_rx_free(struct aq_ring_s *self);
void aq_ring_hwts_rx_clean(struct aq_ring_s *self, struct aq_nic_s *aq_nic);
unsigned int aq_ring_fill_stats_data(struct aq_ring_s *self, u64 *data);
--
2.41.0
Thu, Feb 01, 2024 at 10:47:51AM CET, [email protected] wrote:
>Function aq_ring_hwts_rx_alloc() maps extra AQ_CFG_RXDS_DEF bytes
>for PTP HWTS ring but then generic aq_ring_free() does not take this
>into account.
>Create and use a specific function to free HWTS ring to fix this
>issue.
>
>Trace:
>[ 215.351607] ------------[ cut here ]------------
>[ 215.351612] DMA-API: atlantic 0000:4b:00.0: device driver frees DMA memory with different size [device address=0x00000000fbdd0000] [map size=34816 bytes] [unmap size=32768 bytes]
>[ 215.351635] WARNING: CPU: 33 PID: 10759 at kernel/dma/debug.c:988 check_unmap+0xa6f/0x2360
>...
>[ 215.581176] Call Trace:
>[ 215.583632] <TASK>
>[ 215.585745] ? show_trace_log_lvl+0x1c4/0x2df
>[ 215.590114] ? show_trace_log_lvl+0x1c4/0x2df
>[ 215.594497] ? debug_dma_free_coherent+0x196/0x210
>[ 215.599305] ? check_unmap+0xa6f/0x2360
>[ 215.603147] ? __warn+0xca/0x1d0
>[ 215.606391] ? check_unmap+0xa6f/0x2360
>[ 215.610237] ? report_bug+0x1ef/0x370
>[ 215.613921] ? handle_bug+0x3c/0x70
>[ 215.617423] ? exc_invalid_op+0x14/0x50
>[ 215.621269] ? asm_exc_invalid_op+0x16/0x20
>[ 215.625480] ? check_unmap+0xa6f/0x2360
>[ 215.629331] ? mark_lock.part.0+0xca/0xa40
>[ 215.633445] debug_dma_free_coherent+0x196/0x210
>[ 215.638079] ? __pfx_debug_dma_free_coherent+0x10/0x10
>[ 215.643242] ? slab_free_freelist_hook+0x11d/0x1d0
>[ 215.648060] dma_free_attrs+0x6d/0x130
>[ 215.651834] aq_ring_free+0x193/0x290 [atlantic]
>[ 215.656487] aq_ptp_ring_free+0x67/0x110 [atlantic]
>...
>[ 216.127540] ---[ end trace 6467e5964dd2640b ]---
>[ 216.132160] DMA-API: Mapped at:
>[ 216.132162] debug_dma_alloc_coherent+0x66/0x2f0
>[ 216.132165] dma_alloc_attrs+0xf5/0x1b0
>[ 216.132168] aq_ring_hwts_rx_alloc+0x150/0x1f0 [atlantic]
>[ 216.132193] aq_ptp_ring_alloc+0x1bb/0x540 [atlantic]
>[ 216.132213] aq_nic_init+0x4a1/0x760 [atlantic]
>
>Fixes: 94ad94558b0f ("net: aquantia: add PTP rings infrastructure")
>Signed-off-by: Ivan Vecera <[email protected]>
Reviewed-by: Jiri Pirko <[email protected]>
Hello:
This patch was applied to netdev/net.git (main)
by Jakub Kicinski <[email protected]>:
On Thu, 1 Feb 2024 10:47:51 +0100 you wrote:
> Function aq_ring_hwts_rx_alloc() maps extra AQ_CFG_RXDS_DEF bytes
> for PTP HWTS ring but then generic aq_ring_free() does not take this
> into account.
> Create and use a specific function to free HWTS ring to fix this
> issue.
>
> Trace:
> [ 215.351607] ------------[ cut here ]------------
> [ 215.351612] DMA-API: atlantic 0000:4b:00.0: device driver frees DMA memory with different size [device address=0x00000000fbdd0000] [map size=34816 bytes] [unmap size=32768 bytes]
> [ 215.351635] WARNING: CPU: 33 PID: 10759 at kernel/dma/debug.c:988 check_unmap+0xa6f/0x2360
> ...
> [ 215.581176] Call Trace:
> [ 215.583632] <TASK>
> [ 215.585745] ? show_trace_log_lvl+0x1c4/0x2df
> [ 215.590114] ? show_trace_log_lvl+0x1c4/0x2df
> [ 215.594497] ? debug_dma_free_coherent+0x196/0x210
> [ 215.599305] ? check_unmap+0xa6f/0x2360
> [ 215.603147] ? __warn+0xca/0x1d0
> [ 215.606391] ? check_unmap+0xa6f/0x2360
> [ 215.610237] ? report_bug+0x1ef/0x370
> [ 215.613921] ? handle_bug+0x3c/0x70
> [ 215.617423] ? exc_invalid_op+0x14/0x50
> [ 215.621269] ? asm_exc_invalid_op+0x16/0x20
> [ 215.625480] ? check_unmap+0xa6f/0x2360
> [ 215.629331] ? mark_lock.part.0+0xca/0xa40
> [ 215.633445] debug_dma_free_coherent+0x196/0x210
> [ 215.638079] ? __pfx_debug_dma_free_coherent+0x10/0x10
> [ 215.643242] ? slab_free_freelist_hook+0x11d/0x1d0
> [ 215.648060] dma_free_attrs+0x6d/0x130
> [ 215.651834] aq_ring_free+0x193/0x290 [atlantic]
> [ 215.656487] aq_ptp_ring_free+0x67/0x110 [atlantic]
> ...
> [ 216.127540] ---[ end trace 6467e5964dd2640b ]---
> [ 216.132160] DMA-API: Mapped at:
> [ 216.132162] debug_dma_alloc_coherent+0x66/0x2f0
> [ 216.132165] dma_alloc_attrs+0xf5/0x1b0
> [ 216.132168] aq_ring_hwts_rx_alloc+0x150/0x1f0 [atlantic]
> [ 216.132193] aq_ptp_ring_alloc+0x1bb/0x540 [atlantic]
> [ 216.132213] aq_nic_init+0x4a1/0x760 [atlantic]
>
> [...]
Here is the summary with links:
- [net] net: atlantic: Fix DMA mapping for PTP hwts ring
https://git.kernel.org/netdev/net/c/2e7d3b67630d
You are awesome, thank you!
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