Re: KASAN: use-after-free Read in crypto_aead_free_instance

2017-12-20 Thread Eric Biggers
On Tue, Dec 19, 2017 at 11:48:01PM -0800, syzbot wrote: > Hello, > > syzkaller hit the following crash on > 032b4cc8ff84490c4bc7c4ef8c91e6d83a637538 > git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/master > compiler: gcc (GCC) 7.1.1 20170620 > .config is attached > Raw console ou

Re: KASAN: use-after-free Read in crypto_aead_free_instance

2017-12-20 Thread Dmitry Vyukov
On Wed, Dec 20, 2017 at 12:49 PM, Stephan Mueller wrote: > Am Mittwoch, 20. Dezember 2017, 11:15:38 CET schrieb Dmitry Vyukov: > > Hi Dmitry, > >> >> What will be its meaning? How will it differ from fix? > > Maybe a short clarification would help: what is the meaning of the syz fix > marker? It'

Re: KASAN: use-after-free Read in crypto_aead_free_instance

2017-12-20 Thread Stephan Mueller
Am Mittwoch, 20. Dezember 2017, 11:15:38 CET schrieb Dmitry Vyukov: Hi Dmitry, > > What will be its meaning? How will it differ from fix? Maybe a short clarification would help: what is the meaning of the syz fix marker? Depending on this answer, all that I am thinking of is to mark bug repor

Re: KASAN: use-after-free Read in crypto_aead_free_instance

2017-12-20 Thread Dmitry Vyukov
On Wed, Dec 20, 2017 at 10:55 AM, Stephan Mueller wrote: > Am Mittwoch, 20. Dezember 2017, 10:50:10 CET schrieb Dmitry Vyukov: > > Hi Dmitry, > >> On Wed, Dec 20, 2017 at 10:29 AM, Stephan Mueller > wrote: >> > Am Mittwoch, 20. Dezember 2017, 10:19:43 CET schrieb Dmitry Vyukov: >> > >> > Hi Dmitr

Re: KASAN: use-after-free Read in crypto_aead_free_instance

2017-12-20 Thread syzbot
Am Mittwoch, 20. Dezember 2017, 10:50:10 CET schrieb Dmitry Vyukov: Hi Dmitry, On Wed, Dec 20, 2017 at 10:29 AM, Stephan Mueller wrote: > Am Mittwoch, 20. Dezember 2017, 10:19:43 CET schrieb Dmitry Vyukov: > > Hi Dmitry, > >> > This issue vanishes after applying the patch "[PATCH v2] cryp

Re: KASAN: use-after-free Read in crypto_aead_free_instance

2017-12-20 Thread Stephan Mueller
Am Mittwoch, 20. Dezember 2017, 10:50:10 CET schrieb Dmitry Vyukov: Hi Dmitry, > On Wed, Dec 20, 2017 at 10:29 AM, Stephan Mueller wrote: > > Am Mittwoch, 20. Dezember 2017, 10:19:43 CET schrieb Dmitry Vyukov: > > > > Hi Dmitry, > > > >> > This issue vanishes after applying the patch "[PATCH

Re: KASAN: use-after-free Read in crypto_aead_free_instance

2017-12-20 Thread syzbot
Am Mittwoch, 20. Dezember 2017, 10:50:10 CET schrieb Dmitry Vyukov: Hi Dmitry, On Wed, Dec 20, 2017 at 10:29 AM, Stephan Mueller wrote: > Am Mittwoch, 20. Dezember 2017, 10:19:43 CET schrieb Dmitry Vyukov: > > Hi Dmitry, > >> > This issue vanishes after applying the patch "[PATCH v2] cryp

Re: KASAN: use-after-free Read in crypto_aead_free_instance

2017-12-20 Thread Dmitry Vyukov
On Wed, Dec 20, 2017 at 10:29 AM, Stephan Mueller wrote: > Am Mittwoch, 20. Dezember 2017, 10:19:43 CET schrieb Dmitry Vyukov: > > Hi Dmitry, >> > >> > This issue vanishes after applying the patch "[PATCH v2] crypto: AF_ALG - >> > limit mask and type". >> >> Hi Stephan, >> >> syzbot does not under

Re: KASAN: use-after-free Read in crypto_aead_free_instance

2017-12-20 Thread Stephan Mueller
Am Mittwoch, 20. Dezember 2017, 10:19:43 CET schrieb Dmitry Vyukov: Hi Dmitry, > > > > This issue vanishes after applying the patch "[PATCH v2] crypto: AF_ALG - > > limit mask and type". > > Hi Stephan, > > syzbot does not understand arbitrary English prose, it only understands this: > > Once

Re: KASAN: use-after-free Read in crypto_aead_free_instance

2017-12-20 Thread Dmitry Vyukov
On Wed, Dec 20, 2017 at 10:17 AM, Stephan Müller wrote: > Am Mittwoch, 20. Dezember 2017, 08:48:01 CET schrieb syzbot: > > Hi, > >> Hello, >> >> syzkaller hit the following crash on >> 032b4cc8ff84490c4bc7c4ef8c91e6d83a637538 >> git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/mast

Re: KASAN: use-after-free Read in crypto_aead_free_instance

2017-12-20 Thread Stephan Müller
Am Mittwoch, 20. Dezember 2017, 08:48:01 CET schrieb syzbot: Hi, > Hello, > > syzkaller hit the following crash on > 032b4cc8ff84490c4bc7c4ef8c91e6d83a637538 > git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/master > compiler: gcc (GCC) 7.1.1 20170620 > .config is attached > Raw