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Filename Latest commit message Latest commit date
Zijian Zhang 3d106b2f9f bpf, sockmap: Fix sk_msg_reset_curr
[ Upstream commit 955afd57dc4bf7e8c620a0a9e3af3c881c2c6dff ]

Found in the test_txmsg_pull in test_sockmap,
```
txmsg_cork = 512; // corking is importrant here
opt->iov_length = 3;
opt->iov_count = 1;
opt->rate = 512; // sendmsg will be invoked 512 times
```
The first sendmsg will send an sk_msg with size 3, and bpf_msg_pull_data
will be invoked the first time. sk_msg_reset_curr will reset the copybreak
from 3 to 0. In the second sendmsg, since we are in the stage of corking,
psock->cork will be reused in func sk_msg_alloc. msg->sg.copybreak is 0
now, the second msg will overwrite the first msg. As a result, we could
not pass the data integrity test.

The same problem happens in push and pop test. Thus, fix sk_msg_reset_curr
to restore the correct copybreak.

Fixes: bb9aefde5bba ("bpf: sockmap, updating the sg structure should also update curr")
Signed-off-by: Zijian Zhang <zijianzhang@bytedance.com>
Link: https://lore.kernel.org/r/20241106222520.527076-9-zijianzhang@bytedance.com
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-12-14 19:44:27 +01:00
arch ARM: dts: cubieboard4: Fix DCDC5 regulator constraints 2024-12-14 19:44:24 +01:00
block
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Documentation dt-bindings: vendor-prefixes: Add NeoFidelity, Inc 2024-12-14 19:44:25 +01:00
drivers drm/etnaviv: hold GPU lock across perfmon sampling 2024-12-14 19:44:27 +01:00
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include time: Fix references to _msecs_to_jiffies() handling of values 2024-12-14 19:44:23 +01:00
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kernel time: Fix references to _msecs_to_jiffies() handling of values 2024-12-14 19:44:23 +01:00
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net bpf, sockmap: Fix sk_msg_reset_curr 2024-12-14 19:44:27 +01:00
samples bpf: Fix the xdp_adjust_tail sample prog issue 2024-12-14 19:44:26 +01:00
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sound ASoC: fsl_micfil: fix regmap_write_bits usage 2024-12-14 19:44:26 +01:00
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Linux kernel
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