Re: general protection fault in unlink_file_vma

2020-09-16 Thread linmiaohe
> >Hello, > >syzbot has tested the proposed patch but the reproducer is still triggering an >issue: >kernel BUG at arch/x86/mm/physaddr.c:LINE! > >[ cut here ] >kernel BUG at arch/x86/mm/physaddr.c:28! >invalid opcode: [#1] PREEMPT SMP KASAN >CPU: 0 PID: 6975 Comm: syz

Re: general protection fault in unlink_file_vma

2020-09-16 Thread syzbot
Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: kernel BUG at arch/x86/mm/physaddr.c:LINE! [ cut here ] kernel BUG at arch/x86/mm/physaddr.c:28! invalid opcode: [#1] PREEMPT SMP KASAN CPU: 0 PID: 6975 Comm: syz-executor.2

Re: general protection fault in unlink_file_vma

2020-09-15 Thread linmiaohe
> >Hello, > >syzbot has tested the proposed patch but the reproducer is still triggering an >issue: >kernel panic: Fatal exception > >RBP: 0001 R08: R09: >R10: 7ffd30630720 R11: R12: 0118d940 >R13: 0118d940 R14: fff

Re: general protection fault in unlink_file_vma

2020-09-15 Thread syzbot
Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: kernel panic: Fatal exception RBP: 0001 R08: R09: R10: 7ffd30630720 R11: R12: 0118d940 R13: 0118d940 R14: ff

Re: general protection fault in unlink_file_vma

2020-09-15 Thread linmiaohe
> Hello, > > syzbot has tested the proposed patch but the reproducer is still triggering > an issue: > kernel panic: corrupted stack end in sys_nanosleep > > Kernel panic - not syncing: corrupted stack end detected inside scheduler > CPU: 0 PID: 13791 Comm: syz-executor.4 Not tainted 5.9.0-rc5-syz

Re: general protection fault in unlink_file_vma

2020-09-15 Thread linmiaohe
syzbot wrote: > Hello, > >syzbot has tested the proposed patch but the reproducer is still triggering an >issue: >kernel panic: corrupted stack end in sys_nanosleep > >Kernel panic - not syncing: corrupted stack end detected inside scheduler >CPU: 0 PID: 13791 Comm: syz-executor.4 Not tainted 5.9

Re: general protection fault in unlink_file_vma

2020-09-15 Thread syzbot
Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: kernel panic: corrupted stack end in sys_nanosleep Kernel panic - not syncing: corrupted stack end detected inside scheduler CPU: 0 PID: 13791 Comm: syz-executor.4 Not tainted 5.9.0-rc5-syzkaller #0 Hard

Re: general protection fault in unlink_file_vma

2020-09-13 Thread linmiaohe
Tue, 08 Sep 2020 17:19:17 -0700 > syzbot found the following issue on: > > HEAD commit:59126901 Merge tag 'perf-tools-fixes-for-v5.9-2020-09-03' .. > git tree: upstream > console output: > https://syzkaller.appspot.com/x/log.txt?x=1166cb5d90 > kernel config: > https://syzkaller.ap

Re: general protection fault in unlink_file_vma

2020-09-13 Thread linmiaohe
Hillf Danton wrote: > On Sun, 13 Sep 2020 09:17:26 + linmiaohe wrote: >> >> I reviewed the code carefully these days and I found vma_merge() do only >> fput() the vm_file of the linked vma in remove_next cases. >> This gpf is much likely because the ->mmap() callback can change >> vma->vm_f

Re: general protection fault in unlink_file_vma

2020-09-13 Thread linmiaohe
Hi: Hillf Danton wrote: > Tue, 08 Sep 2020 17:19:17 -0700 >> syzbot found the following issue on: >> general protection fault, probably for non-canonical address >> 0xe00eeaee003b: [#1] PREEMPT SMP KASAN >> KASAN: maybe wild-memory-access in range >> [0x007001d8-0x007001

Re: general protection fault in unlink_file_vma

2020-09-09 Thread linmiaohe
Hillf Danton wrote: >> On Thu, 10 Sep 2020 07:43:41 +0530 Souptick Joarder wrote: >> On Wed, Sep 9, 2020 at 9:45 AM Hillf Danton wrote: >> > Tue, 08 Sep 2020 17:19:17 -0700 >> > > syzbot found the following issue on: >> > > >> > > HEAD commit:59126901 Merge tag >> > > 'perf-tools-fixes-for-v5.

Re: general protection fault in unlink_file_vma

2020-09-09 Thread Souptick Joarder
Hi Hiff, On Wed, Sep 9, 2020 at 9:45 AM Hillf Danton wrote: > > > Tue, 08 Sep 2020 17:19:17 -0700 > > syzbot found the following issue on: > > > > HEAD commit:59126901 Merge tag 'perf-tools-fixes-for-v5.9-2020-09-03' .. > > git tree: upstream > > console output: https://syzkaller.appspo