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Tue, 13 May 2025 16:40:32 +0000 (UTC) Content-Type: text/plain; charset="utf-8" Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH bpf-next] bpf: Fix WARN() in get_bpf_raw_tp_regs From: patchwork-bot+netdevbpf@kernel.org Message-Id: <174715443176.1726492.3970535040989082587.git-patchwork-notify@kernel.org> Date: Tue, 13 May 2025 16:40:31 +0000 References: <20250513042747.757042-1-chen.dylane@linux.dev> In-Reply-To: <20250513042747.757042-1-chen.dylane@linux.dev> To: Tao Chen 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, rostedt@goodmis.org, mhiramat@kernel.org, mathieu.desnoyers@efficios.com, mmullins@fb.com, bpf@vger.kernel.org, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, syzbot+45b0c89a0fc7ae8dbadc@syzkaller.appspotmail.com Hello: This patch was applied to bpf/bpf-next.git (master) by Andrii Nakryiko : On Tue, 13 May 2025 12:27:47 +0800 you wrote: > syzkaller reported an issue: > > WARNING: CPU: 3 PID: 5971 at kernel/trace/bpf_trace.c:1861 get_bpf_raw_tp_regs+0xa4/0x100 kernel/trace/bpf_trace.c:1861 > Modules linked in: > CPU: 3 UID: 0 PID: 5971 Comm: syz-executor205 Not tainted 6.15.0-rc5-syzkaller-00038-g707df3375124 #0 PREEMPT(full) > Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 > RIP: 0010:get_bpf_raw_tp_regs+0xa4/0x100 kernel/trace/bpf_trace.c:1861 > RSP: 0018:ffffc90003636fa8 EFLAGS: 00010293 > RAX: 0000000000000000 RBX: 0000000000000003 RCX: ffffffff81c6bc4c > RDX: ffff888032efc880 RSI: ffffffff81c6bc83 RDI: 0000000000000005 > RBP: ffff88806a730860 R08: 0000000000000005 R09: 0000000000000003 > R10: 0000000000000004 R11: 0000000000000000 R12: 0000000000000004 > R13: 0000000000000001 R14: ffffc90003637008 R15: 0000000000000900 > FS: 0000000000000000(0000) GS:ffff8880d6cdf000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 00007f7baee09130 CR3: 0000000029f5a000 CR4: 0000000000352ef0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > Call Trace: > > ____bpf_get_stack_raw_tp kernel/trace/bpf_trace.c:1934 [inline] > bpf_get_stack_raw_tp+0x24/0x160 kernel/trace/bpf_trace.c:1931 > bpf_prog_ec3b2eefa702d8d3+0x43/0x47 > bpf_dispatcher_nop_func include/linux/bpf.h:1316 [inline] > __bpf_prog_run include/linux/filter.h:718 [inline] > bpf_prog_run include/linux/filter.h:725 [inline] > __bpf_trace_run kernel/trace/bpf_trace.c:2363 [inline] > bpf_trace_run3+0x23f/0x5a0 kernel/trace/bpf_trace.c:2405 > __bpf_trace_mmap_lock_acquire_returned+0xfc/0x140 include/trace/events/mmap_lock.h:47 > __traceiter_mmap_lock_acquire_returned+0x79/0xc0 include/trace/events/mmap_lock.h:47 > __do_trace_mmap_lock_acquire_returned include/trace/events/mmap_lock.h:47 [inline] > trace_mmap_lock_acquire_returned include/trace/events/mmap_lock.h:47 [inline] > __mmap_lock_do_trace_acquire_returned+0x138/0x1f0 mm/mmap_lock.c:35 > __mmap_lock_trace_acquire_returned include/linux/mmap_lock.h:36 [inline] > mmap_read_trylock include/linux/mmap_lock.h:204 [inline] > stack_map_get_build_id_offset+0x535/0x6f0 kernel/bpf/stackmap.c:157 > __bpf_get_stack+0x307/0xa10 kernel/bpf/stackmap.c:483 > ____bpf_get_stack kernel/bpf/stackmap.c:499 [inline] > bpf_get_stack+0x32/0x40 kernel/bpf/stackmap.c:496 > ____bpf_get_stack_raw_tp kernel/trace/bpf_trace.c:1941 [inline] > bpf_get_stack_raw_tp+0x124/0x160 kernel/trace/bpf_trace.c:1931 > bpf_prog_ec3b2eefa702d8d3+0x43/0x47 > > [...] Here is the summary with links: - [bpf-next] bpf: Fix WARN() in get_bpf_raw_tp_regs https://git.kernel.org/bpf/bpf-next/c/3880cdbed1c4 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html