Thread (2 messages) 2 messages, 2 authors, 2021-07-29

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

You are awesome, thank you!
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