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a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=MzoQ2jg4oFupXMXlxp1CLkIfp3lD+zbiYm54IT89hQE=; b=mkUOcsXHeh1yYT2xEaiW6II8D60iyjTpICUQmhDMRHWifgIEM1TPE8mP8ylNe1H4i0 kEsor8fw7abBFW5qCBDoww6JYojYwKJqq3lzcJ/BvOpod+2/sWYx7rKeuMmjpSnm36cY UZM0g8jyGPM40Gi/8FaRgoisbTkeNmRN1Z5s5/u73hA37Iuml7RCc/v4Kcyamxrglf04 LW9U05KuhHY/XJp9w4wdYsLKFnHvBsCIfm9Sk0PcXQEzNq+droJTHxVWY26RJsOei36E cPOuPtWuGO0T8SR7oCqRHA5yAwpNVh7peATzsJ4mkIdR7ZeayFEVQhY1vECOY4N6yuCs gN6w== X-Gm-Message-State: APjAAAX1U7Sr+VPd3nP5v8cWkd0QWw9OUaw8VhSKVLrEB456+CbFr2va FHOpQXHfxmL54wj8E+ntUzoi15utgNYLWYOzS60= X-Google-Smtp-Source: APXvYqyBmCq60wRqDN13DYHLpE3BpSEwtVRR+D2yDu1FVab464RRHamv0OXBlql/KPpTX0dNN0j7XsT1oj35CNKNbPI= X-Received: by 2002:adf:a308:: with SMTP id c8mr14660636wrb.240.1578869364989; Sun, 12 Jan 2020 14:49:24 -0800 (PST) MIME-Version: 1.0 References: <20191216154441.6648-1-fishland@aliyun.com> In-Reply-To: <20191216154441.6648-1-fishland@aliyun.com> From: Richard Weinberger Date: Sun, 12 Jan 2020 23:49:13 +0100 Message-ID: Subject: Re: [PATCH] ubifs: Fix potentially out-of-bounds memory access in ubifs_dump_node To: Liu Song X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200112_144927_424781_C129AE2A X-CRM114-Status: GOOD ( 14.59 ) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Richard Weinberger , linux-mtd@lists.infradead.org, LKML , liu.song11@zte.com.cn Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org T24gTW9uLCBEZWMgMTYsIDIwMTkgYXQgNDo0NSBQTSBMaXUgU29uZyA8ZmlzaGxhbmRAYWxpeXVu LmNvbT4gd3JvdGU6Cj4KPiBGcm9tOiBMaXUgU29uZyA8bGl1LnNvbmcxMUB6dGUuY29tLmNuPgo+ Cj4gSW4g4oCcdWJpZnNfY2hlY2tfbm9kZeKAnSwgd2hlbiDigJxub2RlX2xlbiArIG9mZnM+IGMt PiBsZWJfc2l6ZeKAnSwgdGhlbgo+IGdvdG8gbGFiZWwgb2YgIm91dF9sZW4iLiBUaGVuLCBpbiB0 aGUgZm9sbG93aW5nICJ1Ymlmc19kdW1wX25vZGUiLAo+IGlmIGlub2RlIHR5cGUgaXMgIlVCSUZT X0RBVEFfTk9ERSIsIGluICJwcmludF9oZXhfZHVtcCIsIGFuCj4gb3V0LW9mLWJvdW5kcyBhY2Nl c3MgbWF5IG9jY3VyIGR1ZSB0byB0aGUgd3JvbmcgImNoLT5sZW4iLgo+IFdlIGVuY291bnRlcmVk IHRoaXMgcHJvYmxlbSBpbiBvdXIgZW52aXJvbm1lbnQuIElmICJjaC0+IGxlbiIgaXMKPiB2ZXJ5 IGxhcmdlLCBpdCBtYXkgZXZlbiBjYXVzZSB0aGUga2VybmVsIHRvIGNyYXNoLgo+Cj4gVGhlcmUg YXJlIHRocmVlIHJlYXNvbnMgdG8gY2hvb3NlIHRvIHJlbW92ZSAicHJpbnRfaGV4X2R1bXAiLgo+ IDEpIEFzIG1lbnRpb25lZCBlYXJsaWVyLCB0aGUgZXhjZXB0aW9uICJjaC0+IGxlbiIgbWF5IGNh dXNlIGFuCj4gZXhjZXB0aW9uIGluICJwcmludF9oZXhfZHVtcCI7Cj4gMikgRGF0YSBub2RlcyBh cmUgb2Z0ZW4gbGFyZ2UuIFdoZW4gcHJpbnRpbmcgZGF0YSBjb250ZW50IGluCj4gInByaW50X2hl eF9kdW1wIiwgYSBsYXJnZSBhbW91bnQgb2Ygb3V0cHV0IHdpbGwgYnJpbmcgYSBoaWdoIGxvYWQK PiBvbiB0aGUgc3lzdGVtLCBhbmQgbWF5IGV2ZW4gY2F1c2UgYSB3YXRjaGRvZyByZXNldDsKPiAz KSBFdmVuIGlmIHRoZXJlIGlzIGEgQ1JDIGNoZWNrIGVycm9yLCB0aGUgc3R1ZmYgb2YgZmlsZSBp cyBkaWZmaWN1bHQKPiB0byBpZGVudGlmeSwgYW5kIGRpZmZpY3VsdCB0byBmaW5kIHRoZSBwcm9i bGVtIGZyb20gYSBsYXJnZSBhbW91bnQgb2YKPiBvdXRwdXQuIFdlIGhhdmUgYWxyZWFkeSBvdXRw dXQgdGhlIExFQiBhbmQgb2Zmc2V0IG9mIHRoZSBub2RlLiBTbyB3ZQo+IGNhbiB0YWtlIHRoZSBp bml0aWF0aXZlIHRvIHZpZXcgdGhlIGRhdGEgb2YgaW50ZXJlc3QsIGluc3RlYWQgb2YKPiBwcmlu dGluZyBpdCBkaXJlY3RseS4KCklmIFVCSUZTIGR1bXBzIGRhdGEgbm9kZXMgZHVlIGFuIGVycm9y IHdlIGFyZSBhbHJlYWR5IGluIGRlZXAgdHJvdWJsZQphbmQgaGF2aW5nIHRoZSBjb250ZW50IG9m IGJhZCBkYXRhIG5vZGVzIGNhbiBiZSBoZWxwZnVsLgpUaGlzIGZlYXR1cmUgaGVscGVkIG1lIG1v cmUgdGhhbiBvbmNlIHRvIGRlYnVnIGlzc3Vlcy4KCi0tIApUaGFua3MsCi8vcmljaGFyZAoKX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCkxpbnV4 IE1URCBkaXNjdXNzaW9uIG1haWxpbmcgbGlzdApodHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9t YWlsbWFuL2xpc3RpbmZvL2xpbnV4LW10ZC8K