* Re: memory leak in rds_send_probe [not found] <000000000000ad1dfe058e5b89ab@google.com> @ 2019-07-23 22:17 ` syzbot 2019-07-23 22:23 ` Andrew Morton 0 siblings, 1 reply; 3+ messages in thread From: syzbot @ 2019-07-23 22:17 UTC (permalink / raw) To: akpm, catalin.marinas, davem, dvyukov, jack, kirill.shutemov, koct9i, linux-kernel, linux-mm, linux-rdma, neilb, netdev, rds-devel, ross.zwisler, santosh.shilimkar, syzkaller-bugs, torvalds, willy syzbot has bisected this bug to: commit af49a63e101eb62376cc1d6bd25b97eb8c691d54 Author: Matthew Wilcox <willy@linux.intel.com> Date: Sat May 21 00:03:33 2016 +0000 radix-tree: change naming conventions in radix_tree_shrink bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=176528c8600000 start commit: c6dd78fc Merge branch 'x86-urgent-for-linus' of git://git... git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=14e528c8600000 console output: https://syzkaller.appspot.com/x/log.txt?x=10e528c8600000 kernel config: https://syzkaller.appspot.com/x/.config?x=8de7d700ea5ac607 dashboard link: https://syzkaller.appspot.com/bug?extid=5134cdf021c4ed5aaa5f syz repro: https://syzkaller.appspot.com/x/repro.syz?x=145df0c8600000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=170001f4600000 Reported-by: syzbot+5134cdf021c4ed5aaa5f@syzkaller.appspotmail.com Fixes: af49a63e101e ("radix-tree: change naming conventions in radix_tree_shrink") For information about bisection process see: https://goo.gl/tpsmEJ#bisection ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: memory leak in rds_send_probe 2019-07-23 22:17 ` memory leak in rds_send_probe syzbot @ 2019-07-23 22:23 ` Andrew Morton 2019-07-23 23:25 ` Eric Biggers 0 siblings, 1 reply; 3+ messages in thread From: Andrew Morton @ 2019-07-23 22:23 UTC (permalink / raw) To: syzbot Cc: catalin.marinas, davem, dvyukov, jack, kirill.shutemov, koct9i, linux-kernel, linux-mm, linux-rdma, neilb, netdev, rds-devel, ross.zwisler, santosh.shilimkar, syzkaller-bugs, torvalds, willy On Tue, 23 Jul 2019 15:17:00 -0700 syzbot <syzbot+5134cdf021c4ed5aaa5f@syzkaller.appspotmail.com> wrote: > syzbot has bisected this bug to: > > commit af49a63e101eb62376cc1d6bd25b97eb8c691d54 > Author: Matthew Wilcox <willy@linux.intel.com> > Date: Sat May 21 00:03:33 2016 +0000 > > radix-tree: change naming conventions in radix_tree_shrink > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=176528c8600000 > start commit: c6dd78fc Merge branch 'x86-urgent-for-linus' of git://git... > git tree: upstream > final crash: https://syzkaller.appspot.com/x/report.txt?x=14e528c8600000 > console output: https://syzkaller.appspot.com/x/log.txt?x=10e528c8600000 > kernel config: https://syzkaller.appspot.com/x/.config?x=8de7d700ea5ac607 > dashboard link: https://syzkaller.appspot.com/bug?extid=5134cdf021c4ed5aaa5f > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=145df0c8600000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=170001f4600000 > > Reported-by: syzbot+5134cdf021c4ed5aaa5f@syzkaller.appspotmail.com > Fixes: af49a63e101e ("radix-tree: change naming conventions in > radix_tree_shrink") > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection That's rather hard to believe. af49a63e101eb6237 simply renames a couple of local variables. ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: memory leak in rds_send_probe 2019-07-23 22:23 ` Andrew Morton @ 2019-07-23 23:25 ` Eric Biggers 0 siblings, 0 replies; 3+ messages in thread From: Eric Biggers @ 2019-07-23 23:25 UTC (permalink / raw) To: Andrew Morton Cc: syzbot, catalin.marinas, davem, dvyukov, jack, kirill.shutemov, koct9i, linux-kernel, linux-mm, linux-rdma, neilb, netdev, rds-devel, ross.zwisler, santosh.shilimkar, syzkaller-bugs, torvalds, willy On Tue, Jul 23, 2019 at 03:23:36PM -0700, Andrew Morton wrote: > On Tue, 23 Jul 2019 15:17:00 -0700 syzbot <syzbot+5134cdf021c4ed5aaa5f@syzkaller.appspotmail.com> wrote: > > > syzbot has bisected this bug to: > > > > commit af49a63e101eb62376cc1d6bd25b97eb8c691d54 > > Author: Matthew Wilcox <willy@linux.intel.com> > > Date: Sat May 21 00:03:33 2016 +0000 > > > > radix-tree: change naming conventions in radix_tree_shrink > > > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=176528c8600000 > > start commit: c6dd78fc Merge branch 'x86-urgent-for-linus' of git://git... > > git tree: upstream > > final crash: https://syzkaller.appspot.com/x/report.txt?x=14e528c8600000 > > console output: https://syzkaller.appspot.com/x/log.txt?x=10e528c8600000 > > kernel config: https://syzkaller.appspot.com/x/.config?x=8de7d700ea5ac607 > > dashboard link: https://syzkaller.appspot.com/bug?extid=5134cdf021c4ed5aaa5f > > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=145df0c8600000 > > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=170001f4600000 > > > > Reported-by: syzbot+5134cdf021c4ed5aaa5f@syzkaller.appspotmail.com > > Fixes: af49a63e101e ("radix-tree: change naming conventions in > > radix_tree_shrink") > > > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection > > That's rather hard to believe. af49a63e101eb6237 simply renames a > couple of local variables. > It's been known for months (basically ever since bisection was added) that about 50% of syzbot bisection results are obviously incorrect, often a commit selected at random. Unfortunately, the people actually funded to work on syzbot apparently don't consider fixing this to be high priority issue, so we have to live with it for now. Or until someone volunteers to fix it themselves; source is at https://github.com/google/syzkaller. So for now, please don't waste much time on bisection results that look wonky. But please do pay attention to any bisection results in reminders I've been sending like "Reminder: 10 open syzbot bugs in foo subsystem", since I've manually reviewed those to exclude the obviously wrong results... - Eric ^ permalink raw reply [flat|nested] 3+ messages in thread
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2019-07-23 22:17 ` memory leak in rds_send_probe syzbot
2019-07-23 22:23 ` Andrew Morton
2019-07-23 23:25 ` Eric Biggers
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