Re: [PATCH bpf] bpf: fix rcu warning in bpf_prog_run_pin_on_cpu()
From: patchwork-bot+netdevbpf@kernel.org
Date: 2021-07-29 22:10:06
Hello: This patch was applied to bpf/bpf.git (refs/heads/master): On Wed, 28 Jul 2021 10:23:07 -0700 you wrote:
syzbot reported a RCU warning like below: WARNING: suspicious RCU usage ... Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:105 task_css_set include/linux/cgroup.h:481 [inline] task_dfl_cgroup include/linux/cgroup.h:550 [inline] ____bpf_get_current_cgroup_id kernel/bpf/helpers.c:356 [inline] bpf_get_current_cgroup_id+0x1ce/0x210 kernel/bpf/helpers.c:354 bpf_prog_08c4887f705f20b8+0x10/0x824 bpf_dispatcher_nop_func include/linux/bpf.h:687 [inline] bpf_prog_run_pin_on_cpu include/linux/filter.h:624 [inline] bpf_prog_test_run_syscall+0x2cf/0x5f0 net/bpf/test_run.c:954 bpf_prog_test_run kernel/bpf/syscall.c:3207 [inline] __sys_bpf+0x1993/0x53b0 kernel/bpf/syscall.c:4487 [...]
Here is the summary with links:
- [bpf] bpf: fix rcu warning in bpf_prog_run_pin_on_cpu()
https://git.kernel.org/bpf/bpf/c/8118b11cb603
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