Oops: general protection fault, probably for non-canonical address 0xdffffc000000005f: 0000 [#1] SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x00000000000002f8-0x00000000000002ff] CPU: 0 UID: 0 PID: 5320 Comm: syz.0.0 Not tainted 6.15.0-rc6-syzkaller-00208-g3c21441eeffc #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:h5_recv+0x146/0x8d0 drivers/bluetooth/hci_h5.c:572 Code: 18 48 c1 ea 03 48 89 54 24 28 48 89 d8 48 c1 e8 03 48 89 44 24 50 44 89 64 24 14 48 b8 00 00 00 00 00 fc ff df 48 8b 4c 24 30 <80> 3c 01 00 74 08 4c 89 ef e8 fc 13 d0 f9 4d 8b 65 00 31 ff 4c 89 RSP: 0018:ffffc9000d45fc40 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 00000000000002e8 RCX: 000000000000005f RDX: 000000000000005e RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc9000d45fd60 R08: ffff888045cfe01f R09: 1ffff11008b9fc03 R10: dffffc0000000000 R11: ffffffff8851d5f0 R12: 0000000000000001 R13: 00000000000002f8 R14: ffff888045cfe010 R15: ffffc9000d45fe00 FS: 00007fa00780f6c0(0000) GS:ffff88808d6c7000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa00780efc8 CR3: 0000000042e07000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hci_uart_tty_receive+0x191/0x220 drivers/bluetooth/hci_ldisc.c:627 tiocsti+0x23c/0x2c0 drivers/tty/tty_io.c:2299 tty_ioctl+0x626/0xde0 drivers/tty/tty_io.c:2716 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:906 [inline] __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:892 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa00698e969 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa00780f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fa006bb6080 RCX: 00007fa00698e969 RDX: 0000200000000140 RSI: 0000000000005412 RDI: 0000000000000004 RBP: 00007fa006a10ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007fa006bb6080 R15: 00007ffc14342ee8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:h5_recv+0x146/0x8d0 drivers/bluetooth/hci_h5.c:572 Code: 18 48 c1 ea 03 48 89 54 24 28 48 89 d8 48 c1 e8 03 48 89 44 24 50 44 89 64 24 14 48 b8 00 00 00 00 00 fc ff df 48 8b 4c 24 30 <80> 3c 01 00 74 08 4c 89 ef e8 fc 13 d0 f9 4d 8b 65 00 31 ff 4c 89 RSP: 0018:ffffc9000d45fc40 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 00000000000002e8 RCX: 000000000000005f RDX: 000000000000005e RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc9000d45fd60 R08: ffff888045cfe01f R09: 1ffff11008b9fc03 R10: dffffc0000000000 R11: ffffffff8851d5f0 R12: 0000000000000001 R13: 00000000000002f8 R14: ffff888045cfe010 R15: ffffc9000d45fe00 FS: 00007fa00780f6c0(0000) GS:ffff88808d6c7000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa0077edfc8 CR3: 0000000042e07000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 48 c1 ea 03 shr $0x3,%rdx 4: 48 89 54 24 28 mov %rdx,0x28(%rsp) 9: 48 89 d8 mov %rbx,%rax c: 48 c1 e8 03 shr $0x3,%rax 10: 48 89 44 24 50 mov %rax,0x50(%rsp) 15: 44 89 64 24 14 mov %r12d,0x14(%rsp) 1a: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 21: fc ff df 24: 48 8b 4c 24 30 mov 0x30(%rsp),%rcx * 29: 80 3c 01 00 cmpb $0x0,(%rcx,%rax,1) <-- trapping instruction 2d: 74 08 je 0x37 2f: 4c 89 ef mov %r13,%rdi 32: e8 fc 13 d0 f9 call 0xf9d01433 37: 4d 8b 65 00 mov 0x0(%r13),%r12 3b: 31 ff xor %edi,%edi 3d: 4c rex.WR 3e: 89 .byte 0x89