| Message ID | 20221116072351.1168938-1-houtao@huaweicloud.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | libbpf: Fixes for ring buffer | expand |
Hello: This series was applied to bpf/bpf.git (master) by Andrii Nakryiko <andrii@kernel.org>: On Wed, 16 Nov 2022 15:23:47 +0800 you wrote: > From: Hou Tao <houtao1@huawei.com> > > Hi, > > The patch set tries to fix the problems found when testing ringbuf by > using 4KB and 2GB size. Patch 1 fixes the probe of ring buffer map on > host with 64KB page (e.g., an ARM64 host). Patch 2 & 3 fix the overflow > of length when mmaping 2GB kernel ringbuf or user ringbuf on libbpf. > Patch 4 just reject the reservation with invalid size. > > [...] Here is the summary with links: - [bpf,v2,1/4] libbpf: Use page size as max_entries when probing ring buffer map https://git.kernel.org/bpf/bpf/c/689eb2f1ba46 - [bpf,v2,2/4] libbpf: Handle size overflow for ringbuf mmap https://git.kernel.org/bpf/bpf/c/927cbb478adf - [bpf,v2,3/4] libbpf: Handle size overflow for user ringbuf mmap https://git.kernel.org/bpf/bpf/c/64176bff2446 - [bpf,v2,4/4] libbpf: Check the validity of size in user_ring_buffer__reserve() https://git.kernel.org/bpf/bpf/c/05c1558bfcb6 You are awesome, thank you!
From: Hou Tao <houtao1@huawei.com> Hi, The patch set tries to fix the problems found when testing ringbuf by using 4KB and 2GB size. Patch 1 fixes the probe of ring buffer map on host with 64KB page (e.g., an ARM64 host). Patch 2 & 3 fix the overflow of length when mmaping 2GB kernel ringbuf or user ringbuf on libbpf. Patch 4 just reject the reservation with invalid size. Please see individual patch for details. And comments are always welcome. Change Log: v2: * patch 1: use page size instead of adjust_ringbuf_sz(4096) as main_entries (suggested by Stanislav) * patch 2 & 3: use "mmap_sz" instead of "ro_size/wr_size" as name of mmap length (From Andrii) v1: https://lore.kernel.org/bpf/20221111092642.2333724-1-houtao@huaweicloud.com Hou Tao (4): libbpf: Use page size as max_entries when probing ring buffer map libbpf: Handle size overflow for ringbuf mmap libbpf: Handle size overflow for user ringbuf mmap libbpf: Check the validity of size in user_ring_buffer__reserve() tools/lib/bpf/libbpf_probes.c | 2 +- tools/lib/bpf/ringbuf.c | 26 ++++++++++++++++++++++---- 2 files changed, 23 insertions(+), 5 deletions(-)