On Fri, Aug 21, 2020 at 8:10 AM syzbot <syzbot+6719f65e8a293105e...@syzkaller.appspotmail.com> wrote: > > Hello, > > syzbot found the following issue on: > > HEAD commit: 4b6c093e Merge tag 'block-5.9-2020-08-14' of git://git.ker.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=179f99f6900000 > kernel config: https://syzkaller.appspot.com/x/.config?x=a98b778f5fca0653 > dashboard link: https://syzkaller.appspot.com/bug?extid=6719f65e8a293105edcc > compiler: gcc (GCC) 10.1.0-syz 20200507 > > Unfortunately, I don't have any reproducer for this issue yet. > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+6719f65e8a293105e...@syzkaller.appspotmail.com
#syz dup: general protection fault in perf_misc_flags > general protection fault, probably for non-canonical address > 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN > KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] > CPU: 0 PID: 27621 Comm: modprobe Not tainted 5.8.0-syzkaller #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS > Google 01/01/2011 > RIP: 0010:map_vdso_randomized+0x64/0x160 arch/x86/entry/vdso/vma.c:364 > Code: 00 fc ff df 48 89 f9 48 c1 e9 03 80 3c 01 00 0f 85 eb 00 00 00 65 48 8b > 1c 25 c0 fe 01 00 48 8d bb 28 04 00 00 41 2b 54 24 20 <00> 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > RSP: 0018:ffffc9000ab57c10 EFLAGS: 00010207 > RAX: dffffc0000000000 RBX: ffff88804e0963c0 RCX: 1ffffffff1080a60 > RDX: 0000000000006000 RSI: 0000000000000001 RDI: ffff88804e0967e8 > RBP: ffff88801459b000 R08: 0000000000000001 R09: 0000000000000001 > R10: 0000000000000000 R11: 0000000000000160 R12: ffffffff884052e0 > R13: ffff8880a69cf950 R14: 00007faba47c2c20 R15: ffff8880a5cb4400 > FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 00007faba49e6fc0 CR3: 0000000031b89000 CR4: 00000000001506f0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > Call Trace: > load_elf_binary+0x22d4/0x47c0 fs/binfmt_elf.c:1221 > search_binary_handler fs/exec.c:1819 [inline] > exec_binprm fs/exec.c:1860 [inline] > bprm_execve+0x936/0x1b10 fs/exec.c:1931 > kernel_execve+0x370/0x460 fs/exec.c:2080 > call_usermodehelper_exec_async+0x27a/0x500 kernel/umh.c:101 > ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 > Modules linked in: > ---[ end trace f344c46c1e164ddf ]--- > RIP: 0010:map_vdso_randomized+0x64/0x160 arch/x86/entry/vdso/vma.c:364 > Code: 00 fc ff df 48 89 f9 48 c1 e9 03 80 3c 01 00 0f 85 eb 00 00 00 65 48 8b > 1c 25 c0 fe 01 00 48 8d bb 28 04 00 00 41 2b 54 24 20 <00> 00 00 00 00 00 00 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > RSP: 0018:ffffc9000ab57c10 EFLAGS: 00010207 > RAX: dffffc0000000000 RBX: ffff88804e0963c0 RCX: 1ffffffff1080a60 > RDX: 0000000000006000 RSI: 0000000000000001 RDI: ffff88804e0967e8 > RBP: ffff88801459b000 R08: 0000000000000001 R09: 0000000000000001 > R10: 0000000000000000 R11: 0000000000000160 R12: ffffffff884052e0 > R13: ffff8880a69cf950 R14: 00007faba47c2c20 R15: ffff8880a5cb4400 > FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 00007ffc99314e38 CR3: 0000000031b89000 CR4: 00000000001506e0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > > > --- > This report is generated by a bot. It may contain errors. > See https://goo.gl/tpsmEJ for more information about syzbot. > syzbot engineers can be reached at syzkal...@googlegroups.com. > > syzbot will keep track of this issue. See: > https://goo.gl/tpsmEJ#status for how to communicate with syzbot. > > -- > You received this message because you are subscribed to the Google Groups > "syzkaller-bugs" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to syzkaller-bugs+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/syzkaller-bugs/0000000000008a0f4f05ad5d1743%40google.com.
