Hello:
This patch was applied to bpf/bpf-next.git (master)
by Alexei Starovoitov <ast@xxxxxxxxxx>:
On Fri, 28 Jul 2023 04:33:59 +0000 you wrote:
> In internal testing of test_maps, we sometimes observed failures like:
> test_maps: test_maps.c:173: void test_hashmap_percpu(unsigned int, void *):
> Assertion `bpf_map_update_elem(fd, &key, value, BPF_ANY) == 0' failed.
> where the errno is ENOMEM. After some troubleshooting and enabling
> the warnings, we saw:
> [ 91.304708] percpu: allocation failed, size=8 align=8 atomic=1, atomic alloc failed, no space left
> [ 91.304716] CPU: 51 PID: 24145 Comm: test_maps Kdump: loaded Tainted: G N 6.1.38-smp-DEV #7
> [ 91.304719] Hardware name: Google Astoria/astoria, BIOS 0.20230627.0-0 06/27/2023
> [ 91.304721] Call Trace:
> [ 91.304724] <TASK>
> [ 91.304730] [<ffffffffa7ef83b9>] dump_stack_lvl+0x59/0x88
> [ 91.304737] [<ffffffffa7ef83f8>] dump_stack+0x10/0x18
> [ 91.304738] [<ffffffffa75caa0c>] pcpu_alloc+0x6fc/0x870
> [ 91.304741] [<ffffffffa75ca302>] __alloc_percpu_gfp+0x12/0x20
> [ 91.304743] [<ffffffffa756785e>] alloc_bulk+0xde/0x1e0
> [ 91.304746] [<ffffffffa7566c02>] bpf_mem_alloc_init+0xd2/0x2f0
> [ 91.304747] [<ffffffffa7547c69>] htab_map_alloc+0x479/0x650
> [ 91.304750] [<ffffffffa751d6e0>] map_create+0x140/0x2e0
> [ 91.304752] [<ffffffffa751d413>] __sys_bpf+0x5a3/0x6c0
> [ 91.304753] [<ffffffffa751c3ec>] __x64_sys_bpf+0x1c/0x30
> [ 91.304754] [<ffffffffa7ef847a>] do_syscall_64+0x5a/0x80
> [ 91.304756] [<ffffffffa800009b>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
>
> [...]
Here is the summary with links:
- [v3,bpf-next] bpf/memalloc: Non-atomically allocate freelist during prefill
https://git.kernel.org/bpf/bpf-next/c/d1a02358d48d
You are awesome, thank you!
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