Messages in this thread |  | | Subject | Re: [PATCH v2] lockdep: Allow tuning tracing capacity constants. | From | Tetsuo Handa <> | Date | Sat, 5 Sep 2020 01:05:30 +0900 |
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Hello. Can we apply this patch?
This patch addresses top crashers for syzbot, and applying this patch will help utilizing syzbot's resource for finding other bugs.
On 2020/08/28 0:20, Tetsuo Handa wrote: > Since syzkaller continues various test cases until the kernel crashes, > syzkaller tends to examine more locking dependencies than normal systems. > As a result, syzbot is reporting that the fuzz testing was terminated > due to hitting upper limits lockdep can track [1] [2] [3]. > > Let's allow individually tuning upper limits via kernel config options > (based on an assumption that there is no inter-dependency among these > constants). > > [1] https://syzkaller.appspot.com/bug?id=3d97ba93fb3566000c1c59691ea427370d33ea1b > [2] https://syzkaller.appspot.com/bug?id=381cb436fe60dc03d7fd2a092b46d7f09542a72a > [3] https://syzkaller.appspot.com/bug?id=a588183ac34c1437fc0785e8f220e88282e5a29f > > Reported-by: syzbot <syzbot+cd0ec5211ac07c18c049@syzkaller.appspotmail.com> > Reported-by: syzbot <syzbot+91fd909b6e62ebe06131@syzkaller.appspotmail.com> > Reported-by: syzbot <syzbot+62ebe501c1ce9a91f68c@syzkaller.appspotmail.com> > Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> > --- > kernel/locking/lockdep.c | 2 +- > kernel/locking/lockdep_internals.h | 8 +++--- > lib/Kconfig.debug | 40 ++++++++++++++++++++++++++++++ > 3 files changed, 45 insertions(+), 5 deletions(-) >
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