From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f66.google.com (mail-wm1-f66.google.com [209.85.128.66]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0398033F59D for ; Wed, 4 Mar 2026 03:38:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.66 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772595525; cv=none; b=Mfl2ho1v2J8woi5OlzaNpMkg7j/+MZbVACNYBKpTqawp6bVGKCuP6HqZP1AJIYhockWnWTNPYIHNclBPJEQxhsew5X/IHgrmYcRuiJRotvht2zDbVrPowwexUFiAOGYiQjS85bq4enNYXQqqMMTzYyGVe22MODNPRv19IPK0YWg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772595525; c=relaxed/simple; bh=8MaJNyR191CxvKCR93XU24t6Fvj192M1OImBTqOldyw=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=Y9jUPdDEJSaq9JwVWOLxuxV1Xx6IA93bj87L/sbUaU1zjU/Befyun9h0Vj/MaFOu7Mp3Fj9P2d2ujWBngby3Oel6nYDTMl2JM5XFUhSg6Rze0co2MIPqIS1dIMW7wO8rbOOTg2J/15JZTIpiH4lLpNtMHBbDNq/SOSVPP+OC5AY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=CBV0hajB; arc=none smtp.client-ip=209.85.128.66 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="CBV0hajB" Received: by mail-wm1-f66.google.com with SMTP id 5b1f17b1804b1-48069a48629so68158835e9.0 for ; Tue, 03 Mar 2026 19:38:38 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1772595517; x=1773200317; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=k+ZnasW3opnYA7MfT6mnv63jy4QSymfVfISLyys32YA=; b=CBV0hajBtlS7icQ1+wP9wj8rZ457M19CW0/iGR2Bx5AKLYrocDWBdn/fKYkrtcRlYg z+cPcXF0+6399h8xyYlpGWhs85iEWPYHAOJv5T/QQdbZxydRl+sAiv2Jo/Y6+y/uYRVh fYT7Ddvw58EYE+dyQHJD/jN0dv2izjOdtNbrFlo1pE+2y7+jRPWL6t1HI1NnITTbrBSp j1ZWv5fsHrMGO72TVZudM3D91BiDjAJJdFBivpdMBDdusyv2D9rcVfSKmvpOXfLphgVf fCLldsFETlK13OnYIGv8iLdkaGzvmw26dhiwu9vaIbt1bjS8pORtOaLN/lFZj/BejyJ9 ZsLw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1772595517; x=1773200317; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=k+ZnasW3opnYA7MfT6mnv63jy4QSymfVfISLyys32YA=; b=cpfGomtLq+I0pkP7FF3WU5aeTiVYp29bfPqfKOgTwWiXUXVbwsUkhUZnFe4jb5ZXIO VjdBaFgQPdfFB5458C829RsyWMpRkBeA8nX/gXus05ZFx1egrdgJ9XA+1dV+zuGYVpc3 dcojMU6soyBcwRxhuRpTW0lkQ7ru3lknTiTkaJpQ+4znR2CxnEIpnZwG5338LT5FNI86 xX1fufxWHATxUHtuR33YEHOPbH7iXPTeNnQJGJH1ZaReYtZTEJHKOluPN2DtcBRGAgrk jk/tq7LFwE1FdqAL2SR7iQB3ycYddcHMu/yP/i6pPv+gu7kNZpHBeAGjlp8vIbJf6AOM ZZkg== X-Forwarded-Encrypted: i=1; AJvYcCXTHpeX7q8+5s5o00n52TcCOQ2/ibPOuRkiMdEfu88NW+cr6UMk/05F6eMDYj54mR1XllY=@vger.kernel.org X-Gm-Message-State: AOJu0Yx3uY1QgNVdyypFADaCuS2EnLJO9wCi+7U046A6EPhuGok1MFR0 0VFmEg31PD7LcFrmhPNx+KU1Pn3rPmEzhwe30o5xORbqqP7myt5R8JXw X-Gm-Gg: ATEYQzwrF7oDW/z2RY5Hcq9EhUs9WgKiD46wmhfr1oX6c/QP6lqIjRyWY99zb5eQamU W0Hvnq54zswDscVoaqXlzytfg+rV8V21ne4kkl3ctezEDdclNeS8ti7JGIYKDhMO1MoLCkV70E4 jJo1EdCKN58Pmf1iBug21yQcyHlrfwwiNfVrTypU45FRNgdy5NT4SjQRqhv6+MAOpuphvNhqgRv sg55XzSfgxHlTBYr/FqJSci7SfrZne3YVqtjkWmxBsePlmlEOK9XLfnWQ0pE5LBQgoRplhta+Om EoZjtRriaoNK+lA15v0WucCwbOy0IC69ovL1DPiudFOn/4j/UzJXGnlw1+mMjBedI/wVsW/R8at 5KMfpw2gyBB7EawYFhlHsBtTXQzmAiSzDQlGryeMnC2Yhqk0heYCQn+y74RomxGl2JK8h/u0888 FKLFOVLnmJUw3Shxu0OiWFG44l1PIa5TJqU31vqAqp8BjO3p9ctg== X-Received: by 2002:a05:600c:45c6:b0:480:6999:27ec with SMTP id 5b1f17b1804b1-4851984b278mr8723645e9.13.1772595516894; Tue, 03 Mar 2026 19:38:36 -0800 (PST) Received: from lima-ubuntu.hz.ali.com ([47.246.98.208]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-439b1116698sm26700792f8f.16.2026.03.03.19.38.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 03 Mar 2026 19:38:36 -0800 (PST) From: Qing Wang To: syzbot+b4c5ad098c821bf8d8bc@syzkaller.appspotmail.com Cc: andrii@kernel.org, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, eddyz87@gmail.com, haoluo@google.com, john.fastabend@gmail.com, jolsa@kernel.org, kpsingh@kernel.org, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, martin.lau@linux.dev, mathieu.desnoyers@efficios.com, mattbobrowski@google.com, mhiramat@kernel.org, rostedt@goodmis.org, sdf@fomichev.me, song@kernel.org, syzkaller-bugs@googlegroups.com, yonghong.song@linux.dev Subject: Re: [syzbot] [bpf?] [trace?] KASAN: slab-use-after-free Read in bpf_trace_run9 Date: Wed, 4 Mar 2026 11:38:22 +0800 Message-Id: <20260304033822.107697-1-wangqing7171@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <69a7276a.a70a0220.b118c.0011.GAE@google.com> References: <69a7276a.a70a0220.b118c.0011.GAE@google.com> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit #syz test diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c index 0378e83b4099..b1e3e9f59930 100644 --- a/kernel/bpf/syscall.c +++ b/kernel/bpf/syscall.c @@ -3783,6 +3783,8 @@ static void bpf_raw_tp_link_release(struct bpf_link *link) bpf_probe_unregister(raw_tp->btp, raw_tp); bpf_put_raw_tracepoint(raw_tp->btp); + + tracepoint_synchronize_unregister(); } static void bpf_raw_tp_link_dealloc(struct bpf_link *link)