program: r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000300), 0x0, 0x0) ioctl$TIOCSETD(r0, 0x5423, &(0x7f00000000c0)=0xf) r1 = fcntl$dupfd(r0, 0x0, r0) ioctl$TCFLSH(r1, 0x400455c8, 0x1) (async) ioctl$TIOCSETD(r1, 0x5412, &(0x7f0000000140)=0xffffffc0) (async) ioctl$TIOCSTI(r1, 0x5412, &(0x7f0000000040)) (async) ioctl$TIOCSTI(r1, 0x5412, &(0x7f0000000280)=0xc0) [ 85.381629][ T4708] Bluetooth: hci0: command tx timeout [ 85.427885][ T5370] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000021: 0000 [#1] SMP KASAN NOPTI [ 85.436913][ T5370] KASAN: null-ptr-deref in range [0x0000000000000108-0x000000000000010f] [ 85.442596][ T5370] CPU: 0 UID: 0 PID: 5370 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 85.446545][ T5370] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 85.451009][ T5370] RIP: 0010:bcsp_recv+0x13d/0x1740 [ 85.453218][ T5370] Code: 89 4c 24 40 48 89 54 24 28 48 c1 ea 03 48 89 54 24 68 48 89 5c 24 20 48 c1 eb 03 48 89 5c 24 60 4c 89 7c 24 38 48 8b 44 24 58 <42> 80 3c 30 00 74 08 4c 89 ff e8 84 eb b8 f9 49 8b 1f 31 ff 48 89 [ 85.461183][ T5370] RSP: 0018:ffffc9000d457c00 EFLAGS: 00010206 [ 85.463872][ T5370] RAX: 0000000000000021 RBX: 0000000000000030 RCX: 000000000000002f [ 85.467418][ T5370] RDX: 000000000000002f RSI: 0000000000000001 RDI: 0000000000000000 [ 85.470836][ T5370] RBP: ffffc9000d457d60 R08: ffff88803ff5e01f R09: 1ffff11007febc03 [ 85.474406][ T5370] R10: dffffc0000000000 R11: ffffffff886bbb20 R12: 0000000000000001 [ 85.477810][ T5370] R13: ffffc9000d457e00 R14: dffffc0000000000 R15: 0000000000000108 [ 85.481317][ T5370] FS: 00007f89b77736c0(0000) GS:ffff88808d210000(0000) knlGS:0000000000000000 [ 85.485176][ T5370] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 85.488077][ T5370] CR2: 00007f89b7772fc8 CR3: 0000000042b7c000 CR4: 0000000000352ef0 [ 85.491458][ T5370] Call Trace: [ 85.492864][ T5370] [ 85.494218][ T5370] ? __pfx_bcsp_recv+0x10/0x10 [ 85.496384][ T5370] ? rcu_read_lock_any_held+0xb3/0x120 [ 85.498847][ T5370] ? __pfx_rcu_read_lock_any_held+0x10/0x10 [ 85.501456][ T5370] ? tty_audit_push+0x7c/0x250 [ 85.503639][ T5370] hci_uart_tty_receive+0x194/0x220 [ 85.505910][ T5370] ? __pfx_hci_uart_tty_receive+0x10/0x10 [ 85.508258][ T5370] tiocsti+0x239/0x2c0 [ 85.510040][ T5370] ? __pfx_tiocsti+0x10/0x10 [ 85.512091][ T5370] ? __fget_files+0x2a/0x420 [ 85.514096][ T5370] ? __fget_files+0x3a0/0x420 [ 85.516134][ T5370] ? __fget_files+0x2a/0x420 [ 85.518089][ T5370] tty_ioctl+0x626/0xde0 [ 85.519787][ T5370] ? __pfx_tty_ioctl+0x10/0x10 [ 85.521948][ T5370] __se_sys_ioctl+0xf9/0x170 [ 85.523992][ T5370] do_syscall_64+0xfa/0x3b0 [ 85.526177][ T5370] ? lockdep_hardirqs_on+0x9c/0x150 [ 85.528393][ T5370] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.530813][ T5370] ? clear_bhb_loop+0x60/0xb0 [ 85.532835][ T5370] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.535469][ T5370] RIP: 0033:0x7f89b698ebe9 [ 85.537405][ T5370] 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 [ 85.545366][ T5370] RSP: 002b:00007f89b7773038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 85.548932][ T5370] RAX: ffffffffffffffda RBX: 00007f89b6bb6180 RCX: 00007f89b698ebe9 [ 85.552189][ T5370] RDX: 0000200000000280 RSI: 0000000000005412 RDI: 0000000000000004 [ 85.555608][ T5370] RBP: 00007f89b6a11e19 R08: 0000000000000000 R09: 0000000000000000 [ 85.558966][ T5370] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 85.562456][ T5370] R13: 00007f89b6bb6218 R14: 00007f89b6bb6180 R15: 00007ffdbe17e948 [ 85.565799][ T5370] [ 85.567157][ T5370] Modules linked in: [ 85.569104][ T5370] ---[ end trace 0000000000000000 ]--- [ 85.590118][ T5370] RIP: 0010:bcsp_recv+0x13d/0x1740 [ 85.592369][ T5370] Code: 89 4c 24 40 48 89 54 24 28 48 c1 ea 03 48 89 54 24 68 48 89 5c 24 20 48 c1 eb 03 48 89 5c 24 60 4c 89 7c 24 38 48 8b 44 24 58 <42> 80 3c 30 00 74 08 4c 89 ff e8 84 eb b8 f9 49 8b 1f 31 ff 48 89 [ 85.601647][ T5370] RSP: 0018:ffffc9000d457c00 EFLAGS: 00010206 [ 85.604269][ T5370] RAX: 0000000000000021 RBX: 0000000000000030 RCX: 000000000000002f [ 85.608641][ T5370] RDX: 000000000000002f RSI: 0000000000000001 RDI: 0000000000000000 [ 85.612127][ T5370] RBP: ffffc9000d457d60 R08: ffff88803ff5e01f R09: 1ffff11007febc03 [ 85.615557][ T5370] R10: dffffc0000000000 R11: ffffffff886bbb20 R12: 0000000000000001 [ 85.619589][ T5370] R13: ffffc9000d457e00 R14: dffffc0000000000 R15: 0000000000000108 [ 85.623043][ T5370] FS: 00007f89b77736c0(0000) GS:ffff88808d210000(0000) knlGS:0000000000000000 [ 85.626928][ T5370] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 85.630468][ T5370] CR2: 0000560aa6948a60 CR3: 0000000042b7c000 CR4: 0000000000352ef0 [ 85.633604][ T5370] Kernel panic - not syncing: Fatal exception [ 85.636701][ T5370] Kernel Offset: disabled [ 85.638549][ T5370] Rebooting in 86400 seconds..