RDX: 0000000000000008 RSI: 0000000020000200 RDI: 0000000000000004 RBP: 00007f443b5441d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc533a25ef R14: 00007f443b544300 R15: 0000000000022000 general protection fault, probably for non-canonical address 0xdffffc000000013b: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x00000000000009d8-0x00000000000009df] CPU: 1 PID: 5443 Comm: syz-executor.0 Not tainted 6.3.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 RIP: 0010:sco_conn_add+0x25/0x320 net/bluetooth/sco.c:127 Code: 80 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 41 57 41 56 41 55 49 89 fd 41 54 55 48 8d af d8 09 00 00 48 89 ea 53 48 c1 ea 03 <80> 3c 02 00 0f 85 7a 02 00 00 4d 8b a5 d8 09 00 00 4d 85 e4 74 0e RSP: 0018:ffffc90004867d88 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff88807eb1c000 RCX: ffffffff891f0f00 RDX: 000000000000013b RSI: 0000000000000004 RDI: 0000000000000000 RBP: 00000000000009d8 R08: 0000000000000001 R09: ffff88807eb1d4cb R10: ffffed100fd63a99 R11: ffff8880b9b29680 R12: 0000000000000000 R13: 0000000000000000 R14: ffff88807eb1c010 R15: ffff888069ff9540 FS: 00007f443b544700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000056429e875950 CR3: 0000000073d22000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: sco_connect net/bluetooth/sco.c:274 [inline] sco_sock_connect+0x2bb/0x990 net/bluetooth/sco.c:610 __sys_connect+0xf9/0x130 net/socket.c:2020 __do_sys_connect net/socket.c:2030 [inline] __se_sys_connect net/socket.c:2027 [inline] __x64_sys_connect+0x6e/0xb0 net/socket.c:2027 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f443a88c389 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f443b544168 EFLAGS: 00000246 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 00007f443a9abf80 RCX: 00007f443a88c389 RDX: 0000000000000008 RSI: 0000000020000200 RDI: 0000000000000004 RBP: 00007f443b5441d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc533a25ef R14: 00007f443b544300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:sco_conn_add+0x25/0x320 net/bluetooth/sco.c:127 Code: 80 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 41 57 41 56 41 55 49 89 fd 41 54 55 48 8d af d8 09 00 00 48 89 ea 53 48 c1 ea 03 <80> 3c 02 00 0f 85 7a 02 00 00 4d 8b a5 d8 09 00 00 4d 85 e4 74 0e RSP: 0018:ffffc90004867d88 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff88807eb1c000 RCX: ffffffff891f0f00 RDX: 000000000000013b RSI: 0000000000000004 RDI: 0000000000000000 RBP: 00000000000009d8 R08: 0000000000000001 R09: ffff88807eb1d4cb R10: ffffed100fd63a99 R11: ffff8880b9b29680 R12: 0000000000000000 R13: 0000000000000000 R14: ffff88807eb1c010 R15: ffff888069ff9540 FS: 00007f443b544700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000056429e875950 CR3: 0000000073d22000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 80 00 00 addb $0x0,(%rax) 3: 00 00 add %al,(%rax) 5: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax c: fc ff df f: 41 57 push %r15 11: 41 56 push %r14 13: 41 55 push %r13 15: 49 89 fd mov %rdi,%r13 18: 41 54 push %r12 1a: 55 push %rbp 1b: 48 8d af d8 09 00 00 lea 0x9d8(%rdi),%rbp 22: 48 89 ea mov %rbp,%rdx 25: 53 push %rbx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 7a 02 00 00 jne 0x2ae 34: 4d 8b a5 d8 09 00 00 mov 0x9d8(%r13),%r12 3b: 4d 85 e4 test %r12,%r12 3e: 74 0e je 0x4e