Re: general protection fault in fib_dump_info (2)

2020-08-21 Thread David Ahern
On 8/21/20 10:00 AM, Nikolay Aleksandrov wrote: > > This seems like a much older bug to me, the code allows to pass 0 groups > and > thus we end up without any nh_grp_entry pointers. I reproduced it with a > modified iproute2 that sends an empty NHA_GROUP and then just uses the new > nexthop in an

Re: general protection fault in fib_dump_info (2)

2020-08-21 Thread Nikolay Aleksandrov
On 8/21/20 6:27 PM, syzbot wrote: Hello, syzbot found the following issue on: HEAD commit:da2968ff Merge tag 'pci-v5.9-fixes-1' of git://git.kernel... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=137316ca90 kernel config: https://syzkaller.appspot.

general protection fault in fib_dump_info (2)

2020-08-21 Thread syzbot
Hello, syzbot found the following issue on: HEAD commit:da2968ff Merge tag 'pci-v5.9-fixes-1' of git://git.kernel... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=137316ca90 kernel config: https://syzkaller.appspot.com/x/.config?x=a0437fdd630bee11 das

Re: general protection fault in fib_dump_info

2017-08-15 Thread Roopa Prabhu
On Tue, Aug 15, 2017 at 5:05 AM, Florian Westphal wrote: > idaifish wrote: >> Syzkaller hit 'general protection fault in fib_dump_info' bug on >> commit 4.13-rc5.. > > CC Roopa > >> Guilty file: net/ipv4/fib_semantics.c >> >> kasan: GPF cou

Re: general protection fault in fib_dump_info

2017-08-15 Thread Florian Westphal
idaifish wrote: > Syzkaller hit 'general protection fault in fib_dump_info' bug on > commit 4.13-rc5.. CC Roopa > Guilty file: net/ipv4/fib_semantics.c > > kasan: GPF could be caused by NULL-ptr deref or user memory access > general protection fault: [#1] S

Re: general protection fault in fib_dump_info

2017-08-15 Thread Eric Dumazet
On Tue, 2017-08-15 at 08:51 +0200, Dmitry Vyukov wrote: > Eric, what's the "David Miller net tree"? Is it > https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git? I > don't see 2c87d63ac853550e734edfd45e1be5e5aa44fbcc there. > https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-n

Re: general protection fault in fib_dump_info

2017-08-15 Thread Dmitry Vyukov
tch [ >> https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/?id=2c87d63ac853550e734edfd45e1be5e5aa44fbcc >> ] >> >> >> >> 2017-08-15 11:33 GMT+08:00 Eric Dumazet : >>> On Tue, 2017-08-15 at 10:49 +0800, idaifish wrote: >>>> Syzkaller hit 'general

Re: general protection fault in fib_dump_info

2017-08-14 Thread Dmitry Vyukov
like reproducible after applying the patch [ > https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/?id=2c87d63ac853550e734edfd45e1be5e5aa44fbcc > ] > > > > 2017-08-15 11:33 GMT+08:00 Eric Dumazet : >> On Tue, 2017-08-15 at 10:49 +0800, idaifish wrote: >>

Re: general protection fault in fib_dump_info

2017-08-14 Thread idaifish
aller hit 'general protection fault in fib_dump_info' bug on >> commit 4.13-rc5.. >> >> Guilty file: net/ipv4/fib_semantics.c >> >> kasan: GPF could be caused by NULL-ptr deref or user memory access >> general protection fault: [#1] SMP KASAN >&g

Re: general protection fault in fib_dump_info

2017-08-14 Thread Eric Dumazet
On Tue, 2017-08-15 at 10:49 +0800, idaifish wrote: > Syzkaller hit 'general protection fault in fib_dump_info' bug on > commit 4.13-rc5.. > > Guilty file: net/ipv4/fib_semantics.c > > kasan: GPF could be caused by NULL-ptr deref or user memory access > general