Hello, syzbot found the following crash on: HEAD commit: c25a951c Add linux-next specific files for 20200217 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=127e5865e00000 kernel config: https://syzkaller.appspot.com/x/.config?x=c727d8fc485ff049 dashboard link: https://syzkaller.appspot.com/bug?extid=4a38d3795200fd59a9eb compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=158849e9e00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10e3d711e00000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+4a38d3795200fd59a9eb@xxxxxxxxxxxxxxxxxxxxxxxxx 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: 9807 Comm: syz-executor290 Not tainted 5.6.0-rc2-next-20200217-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:sco_sock_getsockopt+0x33a/0x910 net/bluetooth/sco.c:966 Code: df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 74 05 00 00 49 8b 9e b8 04 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 45 05 00 00 48 8b 3b e8 44 d1 f3 ff be c8 03 00 RSP: 0018:ffffc90007a97d40 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff87282cb2 RDX: 0000000000000000 RSI: ffffffff87282cc0 RDI: ffff88808cc7b4b8 RBP: ffffc90007a97e00 R08: ffff8880a8fc0380 R09: fffffbfff1709225 R10: fffffbfff1709224 R11: 0000000000000003 R12: 0000000000000000 R13: 1ffff92000f52fab R14: ffff88808cc7b000 R15: 0000000000000000 FS: 00000000009c3880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000080 CR3: 00000000a6d61000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __sys_getsockopt+0x16d/0x310 net/socket.c:2175 __do_sys_getsockopt net/socket.c:2190 [inline] __se_sys_getsockopt net/socket.c:2187 [inline] __x64_sys_getsockopt+0xbe/0x150 net/socket.c:2187 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x440199 Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffd6ad93468 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440199 RDX: 000000000000000e RSI: 0000000000000084 RDI: 0000000000000005 RBP: 00000000006ca018 R08: 0000000020000080 R09: 00000000004002c8 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a20 R13: 0000000000401ab0 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 2241e8fa1d14b6d0 ]--- RIP: 0010:sco_sock_getsockopt+0x33a/0x910 net/bluetooth/sco.c:966 Code: df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 74 05 00 00 49 8b 9e b8 04 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 45 05 00 00 48 8b 3b e8 44 d1 f3 ff be c8 03 00 RSP: 0018:ffffc90007a97d40 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff87282cb2 RDX: 0000000000000000 RSI: ffffffff87282cc0 RDI: ffff88808cc7b4b8 RBP: ffffc90007a97e00 R08: ffff8880a8fc0380 R09: fffffbfff1709225 R10: fffffbfff1709224 R11: 0000000000000003 R12: 0000000000000000 R13: 1ffff92000f52fab R14: ffff88808cc7b000 R15: 0000000000000000 FS: 00000000009c3880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000080 CR3: 00000000a6d61000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- This bug 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 syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this bug report. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this bug, for details see: https://goo.gl/tpsmEJ#testing-patches
