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Subject: Re: [PATCH v2 bpf] bpf/arena: fix softlockup in arena_map_free on 64k
 page kernel
From: patchwork-bot+netdevbpf@kernel.org
Message-Id: 
 <173884263027.1450777.2550898579870196871.git-patchwork-notify@kernel.org>
Date: Thu, 06 Feb 2025 11:50:30 +0000
References: <20250205170059.427458-1-alan.maguire@oracle.com>
In-Reply-To: <20250205170059.427458-1-alan.maguire@oracle.com>
To: Alan Maguire <alan.maguire@oracle.com>
Cc: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org,
 martin.lau@linux.dev, eddyz87@gmail.com, song@kernel.org,
 yonghong.song@linux.dev, john.fastabend@gmail.com, kpsingh@kernel.org,
 sdf@fomichev.me, haoluo@google.com, jolsa@kernel.org, bpf@vger.kernel.org,
 colm.harrington@oracle.com

Hello:

This patch was applied to bpf/bpf.git (master)
by Alexei Starovoitov <ast@kernel.org>:

On Wed,  5 Feb 2025 17:00:59 +0000 you wrote:
> On an aarch64 kernel with CONFIG_PAGE_SIZE_64KB=y (64k pages),
> arena_htab tests cause a segmentation fault and soft lockup.
> 
> $ sudo ./test_progs -t arena_htab
> Caught signal #11!
> Stack trace:
> ./test_progs(crash_handler+0x1c)[0x7bd4d8]
> linux-vdso.so.1(__kernel_rt_sigreturn+0x0)[0xffffb34a0968]
> ./test_progs[0x420f74]
> ./test_progs(htab_lookup_elem+0x3c)[0x421090]
> ./test_progs[0x421320]
> ./test_progs[0x421bb8]
> ./test_progs(test_arena_htab+0x40)[0x421c14]
> ./test_progs[0x7bda84]
> ./test_progs(main+0x65c)[0x7bf670]
> /usr/lib64/libc.so.6(+0x2caa0)[0xffffb31ecaa0]
> /usr/lib64/libc.so.6(__libc_start_main+0x98)[0xffffb31ecb78]
> ./test_progs(_start+0x30)[0x41b4f0]
> 
> [...]

Here is the summary with links:
  - [v2,bpf] bpf/arena: fix softlockup in arena_map_free on 64k page kernel
    https://git.kernel.org/bpf/bpf/c/517e8a7835e8

You are awesome, thank you!
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