lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Mon, 21 Mar 2022 09:43:58 +0100 From: "Fabio M. De Francesco" <fmdefrancesco@...il.com> To: syzbot <syzbot+d55757faa9b80590767b@...kaller.appspotmail.com>, syzkaller-bugs@...glegroups.com, David Howells <dhowells@...hat.com> Cc: dhowells@...hat.com, christophe.jaillet@...adoo.fr, linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com Subject: Re: [syzbot] KASAN: null-ptr-deref Read in __free_pages On lunedì 21 marzo 2022 09:24:22 CET David Howells wrote: > It should be possible to just test for the pointer being NULL in the loop > before calling __free_pages() since the list was allocated with kcalloc(). > > David > > #syz test: git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git 6d39b096627f0a1eb6e14f049d8ae3c93e0290f2 > > -- > You received this message because you are subscribed to the Google Groups "syzkaller-bugs" group. > To unsubscribe from this group and stop receiving emails from it, send an email to syzkaller-bugs+unsubscribe@...glegroups.com. > To view this discussion on the web visit https://groups.google.com/d/msgid/syzkaller-bugs/970502.1647851062%40warthog.procyon.org.uk. > Hello David, I had already sent a patch for this problem: https://lore.kernel.org/lkml/20220321014246.19941-1-fmdefrancesco@gmail.com/ However, I see that you ignored mine and preferred yours. I would have appreciated to have your review of my patch or to discuss the pros and cons of yours vs. my solution and be CC'ed in this thread because I've spent some time on it :) Best regards, Fabio M. De Francesco
Powered by blists - more mailing lists