Hello: This patch was applied to bpf/bpf.git (master) by Daniel Borkmann <daniel@xxxxxxxxxxxxx>: On Fri, 6 Jan 2023 16:48:38 +0800 you wrote: > The following kernel panic can be triggered when a task with pid=1 > attach a prog that attempts to send killing signal to itself, also > see [1] for more details: > > Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b > CPU: 3 PID: 1 Comm: systemd Not tainted 6.1.0-09652-g59fe41b5255f #148 > Call Trace: > <TASK> > __dump_stack lib/dump_stack.c:88 [inline] > dump_stack_lvl+0x100/0x178 lib/dump_stack.c:106 > panic+0x2c4/0x60f kernel/panic.c:275 > do_exit.cold+0x63/0xe4 kernel/exit.c:789 > do_group_exit+0xd4/0x2a0 kernel/exit.c:950 > get_signal+0x2460/0x2600 kernel/signal.c:2858 > arch_do_signal_or_restart+0x78/0x5d0 arch/x86/kernel/signal.c:306 > exit_to_user_mode_loop kernel/entry/common.c:168 [inline] > exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:203 > __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] > syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:296 > do_syscall_64+0x44/0xb0 arch/x86/entry/common.c:86 > entry_SYSCALL_64_after_hwframe+0x63/0xcd > > [...] Here is the summary with links: - bpf: skip task with pid=1 in send_signal_common() https://git.kernel.org/bpf/bpf/c/a3d81bc1eaef You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html